[cfe] Add ParameterBuilder and FunctionTypeParameterBuilder

Adds ParameterBuilder as a common interfaces for FormalParameterBuilder
and the new class FunctionTypeParameterBuilder which is used for
parameters in FunctionTypeBuilder.

Change-Id: I5b7fb5a7d0b71547fe1b7a11261a5c783db99caa
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/239313
Reviewed-by: Jens Johansen <jensj@google.com>
Reviewed-by: Paul Berry <paulberry@google.com>
Commit-Queue: Johnni Winther <johnniwinther@google.com>

pkg/_fe_analyzer_shared/lib/src/parser/formal_parameter_kind.dart

@@ -4,21 +4,35 @@
 
 library _fe_analyzer_shared.parser.formal_parameter_kind;
 
-// TODO(johnniwinther): Update this to support required named arguments.
 enum FormalParameterKind {
-  mandatory,
+  requiredPositional,
+  requiredNamed,
   optionalNamed,
   optionalPositional,
 }
 
-bool isMandatoryFormalParameterKind(FormalParameterKind type) {
-  return FormalParameterKind.mandatory == type;
-}
+extension FormalParameterKindExtension on FormalParameterKind {
+  bool get isRequiredPositional {
+    return FormalParameterKind.requiredPositional == this;
+  }
 
-bool isOptionalNamedFormalParameterKind(FormalParameterKind type) {
-  return FormalParameterKind.optionalNamed == type;
-}
+  bool get isOptionalNamed {
+    return FormalParameterKind.optionalNamed == this;
+  }
 
-bool isOptionalPositionalFormalParameterKind(FormalParameterKind type) {
-  return FormalParameterKind.optionalPositional == type;
+  bool get isOptionalPositional {
+    return FormalParameterKind.optionalPositional == this;
+  }
+
+  bool get isRequiredNamed {
+    return FormalParameterKind.requiredNamed == this;
+  }
+
+  bool get isRequired => isRequiredPositional || isRequiredNamed;
+
+  bool get isOptional => isOptionalPositional || isOptionalNamed;
+
+  bool get isPositional => isRequiredPositional || isOptionalPositional;
+
+  bool get isNamed => isRequiredNamed || isOptionalNamed;
 }

pkg/_fe_analyzer_shared/lib/src/parser/parser_impl.dart

@@ -63,10 +63,7 @@ import 'declaration_kind.dart' show DeclarationKind;
 import 'directive_context.dart';
 
 import 'formal_parameter_kind.dart'
-    show
-        FormalParameterKind,
-        isMandatoryFormalParameterKind,
-        isOptionalPositionalFormalParameterKind;
+    show FormalParameterKind, FormalParameterKindExtension;
 
 import 'forwarding_listener.dart' show ForwardingListener, NullListener;
 
@@ -1398,7 +1395,8 @@ class Parser {
         token = ensureCloseParen(token, begin);
         break;
       }
-      token = parseFormalParameter(token, FormalParameterKind.mandatory, kind);
+      token = parseFormalParameter(
+          token, FormalParameterKind.requiredPositional, kind);
       next = token.next!;
       if (!optional(',', next)) {
         Token next = token.next!;
@@ -1525,6 +1523,7 @@ class Parser {
     if (isModifier(next)) {
       if (optional('required', next)) {
         if (parameterKind == FormalParameterKind.optionalNamed) {
+          parameterKind = FormalParameterKind.requiredNamed;
           requiredToken = token = next;
           next = token.next!;
         }
@@ -1742,11 +1741,10 @@ class Parser {
       // TODO(danrubel): Consider removing the last parameter from the
       // handleValuedFormalParameter event... it appears to be unused.
       listener.handleValuedFormalParameter(equal, next);
-      if (isMandatoryFormalParameterKind(parameterKind)) {
+      if (parameterKind.isRequiredPositional) {
         reportRecoverableError(
             equal, codes.messageRequiredParameterWithDefault);
-      } else if (isOptionalPositionalFormalParameterKind(parameterKind) &&
-          identical(':', value)) {
+      } else if (parameterKind.isOptionalPositional && identical(':', value)) {
         reportRecoverableError(
             equal, codes.messagePositionalParameterWithEquals);
       } else if (inFunctionType ||

pkg/analyzer/lib/src/fasta/ast_builder.dart

@@ -1621,8 +1621,7 @@ class AstBuilder extends StackListener {
       }
     }
 
-    ParameterKind analyzerKind =
-        _toAnalyzerParameterKind(kind, requiredKeyword);
+    ParameterKind analyzerKind = _toAnalyzerParameterKind(kind);
     FormalParameter parameter = node;
     if (analyzerKind != ParameterKind.REQUIRED) {
       parameter = ast.defaultFormalParameter(
@@ -4336,17 +4335,16 @@ class AstBuilder extends StackListener {
     );
   }
 
-  ParameterKind _toAnalyzerParameterKind(
-      FormalParameterKind type, Token? requiredKeyword) {
-    if (type == FormalParameterKind.optionalPositional) {
-      return ParameterKind.POSITIONAL;
-    } else if (type == FormalParameterKind.optionalNamed) {
-      if (requiredKeyword != null) {
+  ParameterKind _toAnalyzerParameterKind(FormalParameterKind type) {
+    switch (type) {
+      case FormalParameterKind.requiredPositional:
+        return ParameterKind.REQUIRED;
+      case FormalParameterKind.requiredNamed:
         return ParameterKind.NAMED_REQUIRED;
-      }
-      return ParameterKind.NAMED;
-    } else {
-      return ParameterKind.REQUIRED;
+      case FormalParameterKind.optionalNamed:
+        return ParameterKind.NAMED;
+      case FormalParameterKind.optionalPositional:
+        return ParameterKind.POSITIONAL;
     }
   }
 

pkg/front_end/lib/src/fasta/builder/formal_parameter_builder.dart

@@ -5,12 +5,7 @@
 library fasta.formal_parameter_builder;
 
 import 'package:_fe_analyzer_shared/src/parser/formal_parameter_kind.dart'
-    show
-        isMandatoryFormalParameterKind,
-        isOptionalNamedFormalParameterKind,
-        isOptionalPositionalFormalParameterKind;
-import 'package:_fe_analyzer_shared/src/parser/parser.dart'
-    show FormalParameterKind;
+    show FormalParameterKind, FormalParameterKindExtension;
 import 'package:_fe_analyzer_shared/src/scanner/scanner.dart' show Token;
 import 'package:kernel/ast.dart'
     show DartType, DynamicType, Expression, VariableDeclaration;
@@ -35,18 +30,42 @@ import 'named_type_builder.dart';
 import 'type_builder.dart';
 import 'variable_builder.dart';
 
+abstract class ParameterBuilder {
+  /// List of metadata builders for the metadata declared on this parameter.
+  List<MetadataBuilder>? get metadata;
+  TypeBuilder? get type;
+
+  /// The kind of this parameter, i.e. if it's required, positional optional,
+  /// or named optional.
+  FormalParameterKind get kind;
+
+  bool get isPositional;
+  bool get isRequiredPositional;
+  bool get isNamed;
+  bool get isRequiredNamed;
+
+  String? get name;
+
+  ParameterBuilder clone(
+      List<NamedTypeBuilder> newTypes,
+      SourceLibraryBuilder contextLibrary,
+      TypeParameterScopeBuilder contextDeclaration);
+}
+
 /// A builder for a formal parameter, i.e. a parameter on a method or
 /// constructor.
 class FormalParameterBuilder extends ModifierBuilderImpl
-    implements VariableBuilder {
+    implements VariableBuilder, ParameterBuilder {
   static const String noNameSentinel = 'no name sentinel';
 
   /// List of metadata builders for the metadata declared on this parameter.
+  @override
   final List<MetadataBuilder>? metadata;
 
   @override
   final int modifiers;
 
+  @override
   final TypeBuilder? type;
 
   @override
@@ -55,9 +74,8 @@ class FormalParameterBuilder extends ModifierBuilderImpl
   @override
   final Uri? fileUri;
 
-  /// The kind of this parameter, i.e. if it's required, positional optional,
-  /// or named optional.
-  FormalParameterKind kind = FormalParameterKind.mandatory;
+  @override
+  final FormalParameterKind kind;
 
   /// The variable declaration created for this formal parameter.
   @override
@@ -76,8 +94,8 @@ class FormalParameterBuilder extends ModifierBuilderImpl
 
   final bool isExtensionThis;
 
-  FormalParameterBuilder(this.metadata, this.modifiers, this.type, this.name,
-      LibraryBuilder? compilationUnit, int charOffset,
+  FormalParameterBuilder(this.metadata, this.kind, this.modifiers, this.type,
+      this.name, LibraryBuilder? compilationUnit, int charOffset,
       {Uri? fileUri, this.isExtensionThis: false})
       : this.fileUri = fileUri ?? compilationUnit?.fileUri,
         super(compilationUnit, charOffset);
@@ -85,21 +103,23 @@ class FormalParameterBuilder extends ModifierBuilderImpl
   @override
   String get debugName => "FormalParameterBuilder";
 
-  // TODO(johnniwinther): Cleanup `isRequired` semantics in face of required
-  // named parameters.
-  bool get isRequired => isMandatoryFormalParameterKind(kind);
+  @override
+  bool get isRequiredPositional => kind.isRequiredPositional;
 
-  // TODO(johnniwinther): Rename to `isRequired`.
-  bool get isNamedRequired => (modifiers & requiredMask) != 0;
+  // TODO(johnniwinther): This was previously named `isOptional` so we might
+  // have some uses that intended to use the now existing `isOptional` method.
+  bool get isOptionalPositional => !isRequiredPositional;
 
-  bool get isPositional {
-    return isOptionalPositionalFormalParameterKind(kind) ||
-        isMandatoryFormalParameterKind(kind);
-  }
+  @override
+  bool get isRequiredNamed => kind.isRequiredNamed;
 
-  bool get isNamed => isOptionalNamedFormalParameterKind(kind);
+  @override
+  bool get isPositional => kind.isPositional;
 
-  bool get isOptional => !isRequired;
+  @override
+  bool get isNamed => kind.isNamed;
+
+  bool get isOptional => kind.isOptional;
 
   @override
   bool get isLocal => true;
@@ -137,7 +157,7 @@ class FormalParameterBuilder extends ModifierBuilderImpl
           isConst: false,
           isInitializingFormal: isInitializingFormal,
           isCovariantByDeclaration: isCovariantByDeclaration,
-          isRequired: isNamedRequired,
+          isRequired: isRequiredNamed,
           hasDeclaredInitializer: hasDeclaredInitializer,
           isLowered: isExtensionThis)
         ..fileOffset = charOffset;
@@ -145,22 +165,15 @@ class FormalParameterBuilder extends ModifierBuilderImpl
     return variable!;
   }
 
-  FormalParameterBuilder clone(
+  @override
+  ParameterBuilder clone(
       List<NamedTypeBuilder> newTypes,
       SourceLibraryBuilder contextLibrary,
       TypeParameterScopeBuilder contextDeclaration) {
     // TODO(dmitryas):  It's not clear how [metadata] is used currently, and
     // how it should be cloned.  Consider cloning it instead of reusing it.
-    return new FormalParameterBuilder(
-        metadata,
-        modifiers,
-        type?.clone(newTypes, contextLibrary, contextDeclaration),
-        name,
-        parent as LibraryBuilder?,
-        charOffset,
-        fileUri: fileUri,
-        isExtensionThis: isExtensionThis)
-      ..kind = kind;
+    return new FunctionTypeParameterBuilder(metadata, kind,
+        type?.clone(newTypes, contextLibrary, contextDeclaration), name);
   }
 
   FormalParameterBuilder forFormalParameterInitializerScope() {
@@ -169,6 +182,7 @@ class FormalParameterBuilder extends ModifierBuilderImpl
     if (isInitializingFormal) {
       return new FormalParameterBuilder(
           metadata,
+          kind,
           modifiers | finalMask | initializingFormalMask,
           type,
           name,
@@ -181,6 +195,7 @@ class FormalParameterBuilder extends ModifierBuilderImpl
     } else if (isSuperInitializingFormal) {
       return new FormalParameterBuilder(
           metadata,
+          kind,
           modifiers | finalMask | superInitializingFormalMask,
           type,
           name,
@@ -249,3 +264,42 @@ class FormalParameterBuilder extends ModifierBuilderImpl
     initializerToken = null;
   }
 }
+
+class FunctionTypeParameterBuilder implements ParameterBuilder {
+  @override
+  final List<MetadataBuilder>? metadata;
+
+  @override
+  final FormalParameterKind kind;
+
+  @override
+  final TypeBuilder? type;
+
+  @override
+  final String? name;
+
+  FunctionTypeParameterBuilder(this.metadata, this.kind, this.type, this.name);
+
+  @override
+  ParameterBuilder clone(
+      List<NamedTypeBuilder> newTypes,
+      SourceLibraryBuilder contextLibrary,
+      TypeParameterScopeBuilder contextDeclaration) {
+    // TODO(dmitryas):  It's not clear how [metadata] is used currently, and
+    // how it should be cloned.  Consider cloning it instead of reusing it.
+    return new FunctionTypeParameterBuilder(metadata, kind,
+        type?.clone(newTypes, contextLibrary, contextDeclaration), name);
+  }
+
+  @override
+  bool get isNamed => kind.isNamed;
+
+  @override
+  bool get isRequiredNamed => kind.isRequiredNamed;
+
+  @override
+  bool get isPositional => kind.isPositional;
+
+  @override
+  bool get isRequiredPositional => kind.isRequiredPositional;
+}

pkg/front_end/lib/src/fasta/builder/function_type_builder.dart

@@ -27,7 +27,7 @@ import 'type_variable_builder.dart';
 class FunctionTypeBuilder extends TypeBuilder {
   final TypeBuilder? returnType;
   final List<TypeVariableBuilder>? typeVariables;
-  final List<FormalParameterBuilder>? formals;
+  final List<ParameterBuilder>? formals;
   @override
   final NullabilityBuilder nullabilityBuilder;
   @override
@@ -67,13 +67,13 @@ class FunctionTypeBuilder extends TypeBuilder {
     buffer.write("(");
     if (formals != null) {
       bool isFirst = true;
-      for (FormalParameterBuilder t in formals!) {
+      for (ParameterBuilder t in formals!) {
         if (!isFirst) {
           buffer.write(", ");
         } else {
           isFirst = false;
         }
-        buffer.write(t.fullNameForErrors);
+        buffer.write(t.name);
       }
     }
     buffer.write(") ->");
@@ -95,15 +95,15 @@ class FunctionTypeBuilder extends TypeBuilder {
     List<NamedType>? namedParameters;
     int requiredParameterCount = 0;
     if (formals != null) {
-      for (FormalParameterBuilder formal in formals!) {
+      for (ParameterBuilder formal in formals!) {
         DartType type = formal.type?.build(library) ?? const DynamicType();
         if (formal.isPositional) {
           positionalParameters.add(type);
-          if (formal.isRequired) requiredParameterCount++;
+          if (formal.isRequiredPositional) requiredParameterCount++;
         } else if (formal.isNamed) {
           namedParameters ??= <NamedType>[];
-          namedParameters.add(new NamedType(formal.name, type,
-              isRequired: formal.isNamedRequired));
+          namedParameters.add(new NamedType(formal.name!, type,
+              isRequired: formal.isRequiredNamed));
         }
       }
       if (namedParameters != null) {
@@ -149,11 +149,11 @@ class FunctionTypeBuilder extends TypeBuilder {
           typeVariables!, contextDeclaration,
           kind: TypeVariableKind.function);
     }
-    List<FormalParameterBuilder>? clonedFormals;
+    List<ParameterBuilder>? clonedFormals;
     if (formals != null) {
       clonedFormals =
-          new List<FormalParameterBuilder>.generate(formals!.length, (int i) {
-        FormalParameterBuilder formal = formals![i];
+          new List<ParameterBuilder>.generate(formals!.length, (int i) {
+        ParameterBuilder formal = formals![i];
         return formal.clone(newTypes, contextLibrary, contextDeclaration);
       }, growable: false);
     }

pkg/front_end/lib/src/fasta/kernel/body_builder.dart

@@ -1234,10 +1234,10 @@ class BodyBuilder extends StackListenerImpl
         FormalParameterBuilder parameter = formals.parameters![i];
         Expression? initializer = parameter.variable!.initializer;
         if (!parameter.isSuperInitializingFormal &&
-            (parameter.isOptional || initializer != null)) {
+            (parameter.isOptionalPositional || initializer != null)) {
           if (!parameter.initializerWasInferred) {
             parameter.initializerWasInferred = true;
-            if (parameter.isOptional) {
+            if (parameter.isOptionalPositional) {
               initializer ??= forest.createNullLiteral(
                   // TODO(ahe): Should store: originParameter.fileOffset
                   // https://github.com/dart-lang/sdk/issues/32289
@@ -1310,7 +1310,7 @@ class BodyBuilder extends StackListenerImpl
     if (builder.kind == ProcedureKind.Setter) {
       if (formals?.parameters == null ||
           formals!.parameters!.length != 1 ||
-          formals.parameters!.single.isOptional) {
+          formals.parameters!.single.isOptionalPositional) {
         int charOffset = formals?.charOffset ??
             body?.fileOffset ??
             builder.member.fileOffset;
@@ -1735,8 +1735,14 @@ class BodyBuilder extends StackListenerImpl
             : new List<FormalParameterBuilder>.generate(
                 parameters.positionalParameters.length, (int i) {
                 VariableDeclaration formal = parameters.positionalParameters[i];
-                return new FormalParameterBuilder(null, 0, null, formal.name!,
-                    libraryBuilder, formal.fileOffset,
+                return new FormalParameterBuilder(
+                    /* metadata = */ null,
+                    FormalParameterKind.requiredPositional,
+                    /* modifiers = */ 0,
+                    /* type = */ null,
+                    formal.name!,
+                    libraryBuilder,
+                    formal.fileOffset,
                     fileUri: uri)
                   ..variable = formal;
               }, growable: false);
@@ -4408,7 +4414,7 @@ class BodyBuilder extends StackListenerImpl
         return;
       }
     } else {
-      parameter = new FormalParameterBuilder(null, modifiers, type,
+      parameter = new FormalParameterBuilder(null, kind, modifiers, type,
           name?.name ?? '', libraryBuilder, offsetForToken(nameToken),
           fileUri: uri)
         ..hasDeclaredInitializer = (initializerStart != null);
@@ -4429,7 +4435,7 @@ class BodyBuilder extends StackListenerImpl
           variable.initializer = initializer..parent = variable;
         }
       }
-    } else if (kind != FormalParameterKind.mandatory) {
+    } else if (kind != FormalParameterKind.requiredPositional) {
       variable.initializer ??= forest.createNullLiteral(noLocation)
         ..parent = variable;
     }
@@ -4450,9 +4456,6 @@ class BodyBuilder extends StackListenerImpl
   void endOptionalFormalParameters(
       int count, Token beginToken, Token endToken) {
     debugEvent("OptionalFormalParameters");
-    FormalParameterKind kind = optional("{", beginToken)
-        ? FormalParameterKind.optionalNamed
-        : FormalParameterKind.optionalPositional;
     // When recovering from an empty list of optional arguments, count may be
     // 0. It might be simpler if the parser didn't call this method in that
     // case, however, then [beginOptionalFormalParameters] wouldn't always be
@@ -4463,9 +4466,6 @@ class BodyBuilder extends StackListenerImpl
     if (parameters == null) {
       push(new ParserRecovery(offsetForToken(beginToken)));
     } else {
-      for (FormalParameterBuilder parameter in parameters) {
-        parameter.kind = kind;
-      }
       push(parameters);
     }
   }
@@ -7272,8 +7272,7 @@ class BodyBuilder extends StackListenerImpl
       _validateTypeVariableUseInternal(builder.returnType,
           allowPotentiallyConstantType: allowPotentiallyConstantType);
       if (builder.formals != null) {
-        for (FormalParameterBuilder formalParameterBuilder
-            in builder.formals!) {
+        for (ParameterBuilder formalParameterBuilder in builder.formals!) {
           _validateTypeVariableUseInternal(formalParameterBuilder.type,
               allowPotentiallyConstantType: allowPotentiallyConstantType);
         }

pkg/front_end/lib/src/fasta/kernel/macro/macro.dart

@@ -544,7 +544,7 @@ class MacroApplications {
           namedParameters.add(new macro.ParameterDeclarationImpl(
             id: macro.RemoteInstance.uniqueId,
             identifier: identifier,
-            isRequired: formal.isNamedRequired,
+            isRequired: formal.isRequiredNamed,
             isNamed: true,
             type: type,
           ));
@@ -552,7 +552,7 @@ class MacroApplications {
           positionalParameters.add(new macro.ParameterDeclarationImpl(
             id: macro.RemoteInstance.uniqueId,
             identifier: identifier,
-            isRequired: formal.isRequired,
+            isRequired: formal.isRequiredPositional,
             isNamed: false,
             type: type,
           ));

pkg/front_end/lib/src/fasta/kernel/type_algorithms.dart

@@ -137,7 +137,7 @@ int computeTypeVariableBuilderVariance(TypeVariableBuilder variable,
       }
     }
     if (type.formals != null) {
-      for (FormalParameterBuilder formal in type.formals!) {
+      for (ParameterBuilder formal in type.formals!) {
         result = Variance.meet(
             result,
             Variance.combine(
@@ -281,9 +281,9 @@ TypeBuilder? substituteRange(
       variables = new List<TypeVariableBuilder>.filled(
           type.typeVariables!.length, dummyTypeVariableBuilder);
     }
-    List<FormalParameterBuilder>? formals;
+    List<ParameterBuilder>? formals;
     if (type.formals != null) {
-      formals = new List<FormalParameterBuilder>.filled(
+      formals = new List<ParameterBuilder>.filled(
           type.formals!.length, dummyFormalParameterBuilder);
     }
     TypeBuilder? returnType;
@@ -322,7 +322,7 @@ TypeBuilder? substituteRange(
     }
     if (type.formals != null) {
       for (int i = 0; i < formals!.length; i++) {
-        FormalParameterBuilder formal = type.formals![i];
+        ParameterBuilder formal = type.formals![i];
         TypeBuilder? parameterType = substituteRange(
             formal.type,
             functionTypeUpperSubstitution ?? upperSubstitution,
@@ -331,15 +331,8 @@ TypeBuilder? substituteRange(
             unboundTypeVariables,
             variance: Variance.combine(variance, Variance.contravariant));
         if (parameterType != formal.type) {
-          formals[i] = new FormalParameterBuilder(
-              formal.metadata,
-              formal.modifiers,
-              parameterType,
-              formal.name,
-              formal.parent as LibraryBuilder?,
-              formal.charOffset,
-              fileUri: formal.fileUri,
-              isExtensionThis: formal.isExtensionThis);
+          formals[i] = new FunctionTypeParameterBuilder(
+              formal.metadata, formal.kind, parameterType, formal.name);
           changed = true;
         } else {
           formals[i] = formal;
@@ -476,7 +469,7 @@ class TypeVariablesGraph implements Graph<int> {
           }
         }
         if (type.formals != null) {
-          for (FormalParameterBuilder parameter in type.formals!) {
+          for (ParameterBuilder parameter in type.formals!) {
             collectReferencesFrom(index, parameter.type);
           }
         }
@@ -530,7 +523,7 @@ List<NamedTypeBuilder> findVariableUsesInType(
       }
     }
     if (type.formals != null) {
-      for (FormalParameterBuilder formal in type.formals!) {
+      for (ParameterBuilder formal in type.formals!) {
         uses.addAll(findVariableUsesInType(variable, formal.type));
       }
     }
@@ -651,7 +644,7 @@ List<Object> findRawTypesWithInboundReferences(TypeBuilder? type) {
       }
     }
     if (type.formals != null) {
-      for (FormalParameterBuilder formal in type.formals!) {
+      for (ParameterBuilder formal in type.formals!) {
         typesAndDependencies
             .addAll(findRawTypesWithInboundReferences(formal.type));
       }
@@ -822,7 +815,7 @@ List<List<RawTypeCycleElement>> findRawTypePathsToDeclaration(
       }
     }
     if (start.formals != null) {
-      for (FormalParameterBuilder formal in start.formals!) {
+      for (ParameterBuilder formal in start.formals!) {
         paths.addAll(findRawTypePathsToDeclaration(formal.type, end, visited));
       }
     }
@@ -1030,7 +1023,7 @@ void findUnaliasedGenericFunctionTypes(TypeBuilder? type,
     }
     findUnaliasedGenericFunctionTypes(type.returnType, result: result);
     if (type.formals != null) {
-      for (FormalParameterBuilder formal in type.formals!) {
+      for (ParameterBuilder formal in type.formals!) {
         findUnaliasedGenericFunctionTypes(formal.type, result: result);
       }
     }
@@ -1059,7 +1052,7 @@ void findGenericFunctionTypes(TypeBuilder? type,
     }
     findGenericFunctionTypes(type.returnType, result: result);
     if (type.formals != null) {
-      for (FormalParameterBuilder formal in type.formals!) {
+      for (ParameterBuilder formal in type.formals!) {
         findGenericFunctionTypes(formal.type, result: result);
       }
     }

pkg/front_end/lib/src/fasta/kernel/type_builder_computer.dart

@@ -127,36 +127,27 @@ class TypeBuilderComputer implements DartTypeVisitor<TypeBuilder> {
     List<TypeVariableBuilder>? typeVariables = null;
     List<DartType> positionalParameters = node.positionalParameters;
     List<NamedType> namedParameters = node.namedParameters;
-    List<FormalParameterBuilder> formals =
-        new List<FormalParameterBuilder>.filled(
-            positionalParameters.length + namedParameters.length,
-            dummyFormalParameterBuilder);
+    List<ParameterBuilder> formals = new List<ParameterBuilder>.filled(
+        positionalParameters.length + namedParameters.length,
+        dummyFormalParameterBuilder);
     for (int i = 0; i < positionalParameters.length; i++) {
       TypeBuilder type = positionalParameters[i].accept(this);
-      FormalParameterKind kind = FormalParameterKind.mandatory;
+      FormalParameterKind kind = FormalParameterKind.requiredPositional;
       if (i >= node.requiredParameterCount) {
         kind = FormalParameterKind.optionalPositional;
       }
-      formals[i] = new FormalParameterBuilder(
-          /* metadata = */ null,
-          /* modifiers = */ 0,
-          type,
-          /* name = */ '',
-          /* compilationUnit = */ null,
-          /* charOffset = */ TreeNode.noOffset)
-        ..kind = kind;
+      formals[i] = new FunctionTypeParameterBuilder(
+          /* metadata = */ null, kind, type, /* name = */ null);
     }
     for (int i = 0; i < namedParameters.length; i++) {
       NamedType parameter = namedParameters[i];
       TypeBuilder type = parameter.type.accept(this);
-      formals[i + positionalParameters.length] = new FormalParameterBuilder(
-          /* metadata = */ null,
-          /* modifiers = */ 0,
-          type,
-          parameter.name,
-          /* compilationUnit = */ null,
-          /* charOffset = */ TreeNode.noOffset)
-        ..kind = FormalParameterKind.optionalNamed;
+      FormalParameterKind kind = parameter.isRequired
+          ? FormalParameterKind.requiredNamed
+          : FormalParameterKind.optionalNamed;
+      formals[i + positionalParameters.length] =
+          new FunctionTypeParameterBuilder(
+              /* metadata = */ null, kind, type, parameter.name);
     }
     return new FunctionTypeBuilder(
         returnType,

pkg/front_end/lib/src/fasta/kernel/utils.dart

@@ -6,6 +6,7 @@ import 'dart:io' show BytesBuilder, File, IOSink;
 
 import 'dart:typed_data' show Uint8List;
 
+import 'package:_fe_analyzer_shared/src/parser/formal_parameter_kind.dart';
 import 'package:_fe_analyzer_shared/src/scanner/scanner.dart' show Token;
 import 'package:_fe_analyzer_shared/src/scanner/token.dart'
     show SyntheticToken, TokenType;
@@ -231,7 +232,9 @@ final MetadataBuilder dummyMetadataBuilder = new MetadataBuilder(dummyToken);
 final TypeBuilder dummyTypeBuilder =
     new FixedTypeBuilder(dummyDartType, dummyUri, -1);
 final FormalParameterBuilder dummyFormalParameterBuilder =
-    new FormalParameterBuilder(null, 0, null, '', null, -1, fileUri: dummyUri);
+    new FormalParameterBuilder(
+        null, FormalParameterKind.requiredPositional, 0, null, '', null, -1,
+        fileUri: dummyUri);
 final TypeVariableBuilder dummyTypeVariableBuilder = new TypeVariableBuilder(
     TypeVariableBuilder.noNameSentinel, null, -1, null,
     kind: TypeVariableKind.function);

pkg/front_end/lib/src/fasta/source/diet_listener.dart

@@ -289,10 +289,10 @@ class DietListener extends StackListenerImpl {
     if (typedefBuilder is TypeAliasBuilder) {
       TypeBuilder? type = typedefBuilder.type;
       if (type is FunctionTypeBuilder) {
-        List<FormalParameterBuilder>? formals = type.formals;
+        List<ParameterBuilder>? formals = type.formals;
         if (formals != null) {
           for (int i = 0; i < formals.length; ++i) {
-            FormalParameterBuilder formal = formals[i];
+            ParameterBuilder formal = formals[i];
             List<MetadataBuilder>? metadata = formal.metadata;
             if (metadata != null && metadata.length > 0) {
               // [parseMetadata] is using [Parser.parseMetadataStar] under the

pkg/front_end/lib/src/fasta/source/outline_builder.dart

@@ -1797,7 +1797,7 @@ class OutlineBuilder extends StackListenerImpl {
       } else {
         if (formals != null) {
           for (FormalParameterBuilder formal in formals) {
-            if (!formal.isRequired) {
+            if (!formal.isRequiredPositional) {
               addProblem(messageOperatorWithOptionalFormals, formal.charOffset,
                   formal.name.length);
             }
@@ -1920,8 +1920,15 @@ class OutlineBuilder extends StackListenerImpl {
           libraryBuilder.unboundTypeVariables.addAll(unboundTypeVariables);
         }
         synthesizedFormals.add(new FormalParameterBuilder(
-            null, finalMask, thisType, extensionThisName, null, charOffset,
-            fileUri: uri, isExtensionThis: true));
+            /* metadata = */ null,
+            FormalParameterKind.requiredPositional,
+            finalMask,
+            thisType,
+            extensionThisName,
+            null,
+            charOffset,
+            fileUri: uri,
+            isExtensionThis: true));
         if (formals != null) {
           synthesizedFormals.addAll(formals);
         }
@@ -2284,6 +2291,7 @@ class OutlineBuilder extends StackListenerImpl {
     } else {
       push(libraryBuilder.addFormalParameter(
           metadata,
+          kind,
           modifiers,
           type,
           name == null ? FormalParameterBuilder.noNameSentinel : name as String,
@@ -2321,9 +2329,6 @@ class OutlineBuilder extends StackListenerImpl {
   void endOptionalFormalParameters(
       int count, Token beginToken, Token endToken) {
     debugEvent("OptionalFormalParameters");
-    FormalParameterKind kind = optional("{", beginToken)
-        ? FormalParameterKind.optionalNamed
-        : FormalParameterKind.optionalPositional;
     // When recovering from an empty list of optional arguments, count may be
     // 0. It might be simpler if the parser didn't call this method in that
     // case, however, then [beginOptionalFormalParameters] wouldn't always be
@@ -2334,9 +2339,6 @@ class OutlineBuilder extends StackListenerImpl {
     if (parameters == null) {
       push(new ParserRecovery(offsetForToken(beginToken)));
     } else {
-      for (FormalParameterBuilder parameter in parameters) {
-        parameter.kind = kind;
-      }
       push(parameters);
     }
   }

pkg/front_end/lib/src/fasta/source/source_constructor_builder.dart

@@ -428,7 +428,8 @@ class DeclaredSourceConstructorBuilder extends SourceFunctionBuilderImpl
                     superInitializingFormalIndex];
             correspondingSuperFormalType =
                 positionalSuperFormalType[superInitializingFormalIndex];
-            if (!hasImmediatelyDeclaredInitializer && !formal.isRequired) {
+            if (!hasImmediatelyDeclaredInitializer &&
+                !formal.isRequiredPositional) {
               (positionalSuperParameters ??= <int?>[]).add(formalIndex);
             } else {
               (positionalSuperParameters ??= <int?>[]).add(null);
@@ -441,7 +442,7 @@ class DeclaredSourceConstructorBuilder extends SourceFunctionBuilderImpl
             formal.hasDeclaredInitializer = hasImmediatelyDeclaredInitializer ||
                 namedSuperFormalHasInitializer[formal.name]!;
             correspondingSuperFormalType = namedSuperFormalType[formal.name];
-            if (!hasImmediatelyDeclaredInitializer && !formal.isNamedRequired) {
+            if (!hasImmediatelyDeclaredInitializer && !formal.isRequiredNamed) {
               (namedSuperParameters ??= <String>[]).add(formal.name);
             }
           } else {

pkg/front_end/lib/src/fasta/source/source_enum_builder.dart

@@ -4,6 +4,7 @@
 
 library fasta.enum_builder;
 
+import 'package:_fe_analyzer_shared/src/parser/formal_parameter_kind.dart';
 import 'package:_fe_analyzer_shared/src/scanner/token.dart';
 
 import 'package:kernel/ast.dart';
@@ -310,9 +311,21 @@ class SourceEnumBuilder extends SourceClassBuilder {
               /* typeParameters = */ null,
               <FormalParameterBuilder>[
                 new FormalParameterBuilder(
-                    null, 0, intType, "index", libraryBuilder, charOffset),
+                    null,
+                    FormalParameterKind.requiredPositional,
+                    0,
+                    intType,
+                    "index",
+                    libraryBuilder,
+                    charOffset),
                 new FormalParameterBuilder(
-                    null, 0, stringType, "name", libraryBuilder, charOffset)
+                    null,
+                    FormalParameterKind.requiredPositional,
+                    0,
+                    stringType,
+                    "name",
+                    libraryBuilder,
+                    charOffset)
               ],
               libraryBuilder,
               charOffset,
@@ -332,11 +345,23 @@ class SourceEnumBuilder extends SourceClassBuilder {
           member.formals!.insert(
               0,
               new FormalParameterBuilder(
-                  null, 0, stringType, "name", libraryBuilder, charOffset));
+                  /* metadata = */ null,
+                  FormalParameterKind.requiredPositional,
+                  /* modifiers = */ 0,
+                  stringType,
+                  "name",
+                  libraryBuilder,
+                  charOffset));
           member.formals!.insert(
               0,
               new FormalParameterBuilder(
-                  null, 0, intType, "index", libraryBuilder, charOffset));
+                  /* metadata = */ null,
+                  FormalParameterKind.requiredPositional,
+                  /* modifiers = */ 0,
+                  intType,
+                  "index",
+                  libraryBuilder,
+                  charOffset));
         }
       });
     }

pkg/front_end/lib/src/fasta/source/source_function_builder.dart

@@ -355,13 +355,13 @@ abstract class SourceFunctionBuilderImpl extends SourceMemberBuilderImpl
           function.positionalParameters.add(parameter);
         }
         parameter.parent = function;
-        if (formal.isRequired) {
+        if (formal.isRequiredPositional) {
           function.requiredParameterCount++;
         }
 
         if (libraryBuilder.isNonNullableByDefault) {
           // Required named parameters can't have default values.
-          if (formal.isNamedRequired && formal.initializerToken != null) {
+          if (formal.isRequiredNamed && formal.initializerToken != null) {
             libraryBuilder.addProblem(
                 templateRequiredNamedParameterHasDefaultValueError
                     .withArguments(formal.name),
@@ -374,7 +374,7 @@ abstract class SourceFunctionBuilderImpl extends SourceMemberBuilderImpl
     }
     if (!isExtensionInstanceMember &&
         isSetter &&
-        (formals?.length != 1 || formals![0].isOptional)) {
+        (formals?.length != 1 || formals![0].isOptionalPositional)) {
       // Replace illegal parameters by single dummy parameter.
       // Do this after building the parameters, since the diet listener
       // assumes that parameters are built, even if illegal in number.

pkg/front_end/lib/src/fasta/source/source_library_builder.dart

@@ -7,6 +7,7 @@ library fasta.source_library_builder;
 import 'dart:collection';
 import 'dart:convert' show jsonEncode;
 
+import 'package:_fe_analyzer_shared/src/parser/formal_parameter_kind.dart';
 import 'package:_fe_analyzer_shared/src/scanner/token.dart' show Token;
 import 'package:_fe_analyzer_shared/src/util/resolve_relative_uri.dart'
     show resolveRelativeUri;
@@ -2264,7 +2265,7 @@ class SourceLibraryBuilder extends LibraryBuilderImpl {
           }
         } else if (type is FunctionTypeBuilder) {
           if (type.formals != null) {
-            for (FormalParameterBuilder formal in type.formals!) {
+            for (ParameterBuilder formal in type.formals!) {
               if (usesTypeVariables(formal.type)) {
                 return true;
               }
@@ -3014,6 +3015,7 @@ class SourceLibraryBuilder extends LibraryBuilderImpl {
 
   FormalParameterBuilder addFormalParameter(
       List<MetadataBuilder>? metadata,
+      FormalParameterKind kind,
       int modifiers,
       TypeBuilder? type,
       String name,
@@ -3030,7 +3032,7 @@ class SourceLibraryBuilder extends LibraryBuilderImpl {
       modifiers |= superInitializingFormalMask;
     }
     FormalParameterBuilder formal = new FormalParameterBuilder(
-        metadata, modifiers, type, name, this, charOffset,
+        metadata, kind, modifiers, type, name, this, charOffset,
         fileUri: fileUri)
       ..initializerToken = initializerToken
       ..hasDeclaredInitializer = (initializerToken != null);
@@ -4176,8 +4178,9 @@ class SourceLibraryBuilder extends LibraryBuilderImpl {
     if (!isNonNullableByDefault) return;
 
     for (FormalParameterBuilder formal in formals) {
-      bool isOptionalPositional = formal.isOptional && formal.isPositional;
-      bool isOptionalNamed = !formal.isNamedRequired && formal.isNamed;
+      bool isOptionalPositional =
+          formal.isOptionalPositional && formal.isPositional;
+      bool isOptionalNamed = !formal.isRequiredNamed && formal.isNamed;
       bool isOptional = isOptionalPositional || isOptionalNamed;
       if (isOptional &&
           formal.variable!.type.isPotentiallyNonNullable &&
@@ -5455,7 +5458,7 @@ void _sortTypeVariablesTopologicallyFromRoot(TypeBuilder root,
     }
     if (root.formals != null && root.formals!.isNotEmpty) {
       internalDependents = <TypeBuilder>[];
-      for (FormalParameterBuilder formal in root.formals!) {
+      for (ParameterBuilder formal in root.formals!) {
         internalDependents.add(formal.type!);
       }
     }

pkg/front_end/parser_testcases/augmentation/member_declarations.dart.expect

@@ -85,7 +85,7 @@ beginCompilationUnit(class)
                 handleNoType(()
                 handleIdentifier(value, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, value, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, value, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -107,7 +107,7 @@ beginCompilationUnit(class)
                 handleNoType(()
                 handleIdentifier(value, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, value, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, value, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -260,7 +260,7 @@ beginCompilationUnit(class)
                 handleNoType(()
                 handleIdentifier(value, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, value, null, null, FormalParameterKind.mandatory, MemberKind.StaticMethod)
+              endFormalParameter(null, null, null, value, null, null, FormalParameterKind.requiredPositional, MemberKind.StaticMethod)
             endFormalParameters(1, (, ), MemberKind.StaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -282,7 +282,7 @@ beginCompilationUnit(class)
                 handleNoType(()
                 handleIdentifier(value, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, value, null, null, FormalParameterKind.mandatory, MemberKind.StaticMethod)
+              endFormalParameter(null, null, null, value, null, null, FormalParameterKind.requiredPositional, MemberKind.StaticMethod)
             endFormalParameters(1, (, ), MemberKind.StaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -448,7 +448,7 @@ beginCompilationUnit(class)
                 handleNoType(()
                 handleIdentifier(value, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, value, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, value, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -470,7 +470,7 @@ beginCompilationUnit(class)
                 handleNoType(()
                 handleIdentifier(value, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, value, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, value, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -623,7 +623,7 @@ beginCompilationUnit(class)
                 handleNoType(()
                 handleIdentifier(value, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, value, null, null, FormalParameterKind.mandatory, MemberKind.StaticMethod)
+              endFormalParameter(null, null, null, value, null, null, FormalParameterKind.requiredPositional, MemberKind.StaticMethod)
             endFormalParameters(1, (, ), MemberKind.StaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -645,7 +645,7 @@ beginCompilationUnit(class)
                 handleNoType(()
                 handleIdentifier(value, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, value, null, null, FormalParameterKind.mandatory, MemberKind.StaticMethod)
+              endFormalParameter(null, null, null, value, null, null, FormalParameterKind.requiredPositional, MemberKind.StaticMethod)
             endFormalParameters(1, (, ), MemberKind.StaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)

pkg/front_end/parser_testcases/augmentation/member_declarations.dart.intertwined.expect

@@ -177,7 +177,7 @@ parseUnit(class)
                   parseFormalParameters(setter, MemberKind.NonStaticMethod)
                     parseFormalParametersRest((, MemberKind.NonStaticMethod)
                       listener: beginFormalParameters((, MemberKind.NonStaticMethod)
-                      parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                      parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(()
                           listener: beginMetadataStar(value)
                           listener: endMetadataStar(0)
@@ -186,7 +186,7 @@ parseUnit(class)
                         ensureIdentifier((, formalParameterDeclaration)
                           listener: handleIdentifier(value, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue())
-                        listener: endFormalParameter(null, null, null, value, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, value, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                       listener: endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
                 parseInitializersOpt())
                   listener: handleNoInitializers()
@@ -218,7 +218,7 @@ parseUnit(class)
                   parseFormalParameters(setter, MemberKind.NonStaticMethod)
                     parseFormalParametersRest((, MemberKind.NonStaticMethod)
                       listener: beginFormalParameters((, MemberKind.NonStaticMethod)
-                      parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                      parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(()
                           listener: beginMetadataStar(value)
                           listener: endMetadataStar(0)
@@ -227,7 +227,7 @@ parseUnit(class)
                         ensureIdentifier((, formalParameterDeclaration)
                           listener: handleIdentifier(value, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue())
-                        listener: endFormalParameter(null, null, null, value, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, value, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                       listener: endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
                 parseInitializersOpt())
                   listener: handleNoInitializers()
@@ -513,7 +513,7 @@ parseUnit(class)
                   parseFormalParameters(setter, MemberKind.StaticMethod)
                     parseFormalParametersRest((, MemberKind.StaticMethod)
                       listener: beginFormalParameters((, MemberKind.StaticMethod)
-                      parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.StaticMethod)
+                      parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.StaticMethod)
                         parseMetadataStar(()
                           listener: beginMetadataStar(value)
                           listener: endMetadataStar(0)
@@ -522,7 +522,7 @@ parseUnit(class)
                         ensureIdentifier((, formalParameterDeclaration)
                           listener: handleIdentifier(value, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue())
-                        listener: endFormalParameter(null, null, null, value, null, null, FormalParameterKind.mandatory, MemberKind.StaticMethod)
+                        listener: endFormalParameter(null, null, null, value, null, null, FormalParameterKind.requiredPositional, MemberKind.StaticMethod)
                       listener: endFormalParameters(1, (, ), MemberKind.StaticMethod)
                 parseInitializersOpt())
                   listener: handleNoInitializers()
@@ -553,7 +553,7 @@ parseUnit(class)
                   parseFormalParameters(setter, MemberKind.StaticMethod)
                     parseFormalParametersRest((, MemberKind.StaticMethod)
                       listener: beginFormalParameters((, MemberKind.StaticMethod)
-                      parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.StaticMethod)
+                      parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.StaticMethod)
                         parseMetadataStar(()
                           listener: beginMetadataStar(value)
                           listener: endMetadataStar(0)
@@ -562,7 +562,7 @@ parseUnit(class)
                         ensureIdentifier((, formalParameterDeclaration)
                           listener: handleIdentifier(value, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue())
-                        listener: endFormalParameter(null, null, null, value, null, null, FormalParameterKind.mandatory, MemberKind.StaticMethod)
+                        listener: endFormalParameter(null, null, null, value, null, null, FormalParameterKind.requiredPositional, MemberKind.StaticMethod)
                       listener: endFormalParameters(1, (, ), MemberKind.StaticMethod)
                 parseInitializersOpt())
                   listener: handleNoInitializers()
@@ -874,7 +874,7 @@ parseUnit(class)
                 parseFormalParameters(setter, MemberKind.NonStaticMethod)
                   parseFormalParametersRest((, MemberKind.NonStaticMethod)
                     listener: beginFormalParameters((, MemberKind.NonStaticMethod)
-                    parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                    parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                       parseMetadataStar(()
                         listener: beginMetadataStar(value)
                         listener: endMetadataStar(0)
@@ -883,7 +883,7 @@ parseUnit(class)
                       ensureIdentifier((, formalParameterDeclaration)
                         listener: handleIdentifier(value, formalParameterDeclaration)
                       listener: handleFormalParameterWithoutValue())
-                      listener: endFormalParameter(null, null, null, value, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                      listener: endFormalParameter(null, null, null, value, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                     listener: endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
               parseInitializersOpt())
                 listener: handleNoInitializers()
@@ -915,7 +915,7 @@ parseUnit(class)
                 parseFormalParameters(setter, MemberKind.NonStaticMethod)
                   parseFormalParametersRest((, MemberKind.NonStaticMethod)
                     listener: beginFormalParameters((, MemberKind.NonStaticMethod)
-                    parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                    parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                       parseMetadataStar(()
                         listener: beginMetadataStar(value)
                         listener: endMetadataStar(0)
@@ -924,7 +924,7 @@ parseUnit(class)
                       ensureIdentifier((, formalParameterDeclaration)
                         listener: handleIdentifier(value, formalParameterDeclaration)
                       listener: handleFormalParameterWithoutValue())
-                      listener: endFormalParameter(null, null, null, value, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                      listener: endFormalParameter(null, null, null, value, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                     listener: endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
               parseInitializersOpt())
                 listener: handleNoInitializers()
@@ -1210,7 +1210,7 @@ parseUnit(class)
                 parseFormalParameters(setter, MemberKind.StaticMethod)
                   parseFormalParametersRest((, MemberKind.StaticMethod)
                     listener: beginFormalParameters((, MemberKind.StaticMethod)
-                    parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.StaticMethod)
+                    parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.StaticMethod)
                       parseMetadataStar(()
                         listener: beginMetadataStar(value)
                         listener: endMetadataStar(0)
@@ -1219,7 +1219,7 @@ parseUnit(class)
                       ensureIdentifier((, formalParameterDeclaration)
                         listener: handleIdentifier(value, formalParameterDeclaration)
                       listener: handleFormalParameterWithoutValue())
-                      listener: endFormalParameter(null, null, null, value, null, null, FormalParameterKind.mandatory, MemberKind.StaticMethod)
+                      listener: endFormalParameter(null, null, null, value, null, null, FormalParameterKind.requiredPositional, MemberKind.StaticMethod)
                     listener: endFormalParameters(1, (, ), MemberKind.StaticMethod)
               parseInitializersOpt())
                 listener: handleNoInitializers()
@@ -1250,7 +1250,7 @@ parseUnit(class)
                 parseFormalParameters(setter, MemberKind.StaticMethod)
                   parseFormalParametersRest((, MemberKind.StaticMethod)
                     listener: beginFormalParameters((, MemberKind.StaticMethod)
-                    parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.StaticMethod)
+                    parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.StaticMethod)
                       parseMetadataStar(()
                         listener: beginMetadataStar(value)
                         listener: endMetadataStar(0)
@@ -1259,7 +1259,7 @@ parseUnit(class)
                       ensureIdentifier((, formalParameterDeclaration)
                         listener: handleIdentifier(value, formalParameterDeclaration)
                       listener: handleFormalParameterWithoutValue())
-                      listener: endFormalParameter(null, null, null, value, null, null, FormalParameterKind.mandatory, MemberKind.StaticMethod)
+                      listener: endFormalParameter(null, null, null, value, null, null, FormalParameterKind.requiredPositional, MemberKind.StaticMethod)
                     listener: endFormalParameters(1, (, ), MemberKind.StaticMethod)
               parseInitializersOpt())
                 listener: handleNoInitializers()

pkg/front_end/parser_testcases/augmentation/member_errors.dart.expect

@@ -456,7 +456,7 @@ beginCompilationUnit(class)
                 handleNoType(()
                 handleIdentifier(value, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, value, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, value, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -479,7 +479,7 @@ beginCompilationUnit(class)
                 handleNoType(()
                 handleIdentifier(value, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, value, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, value, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -501,7 +501,7 @@ beginCompilationUnit(class)
                 handleNoType(()
                 handleIdentifier(value, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, value, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, value, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -523,7 +523,7 @@ beginCompilationUnit(class)
                 handleNoType(()
                 handleIdentifier(value, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, value, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, value, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -546,7 +546,7 @@ beginCompilationUnit(class)
                 handleNoType(()
                 handleIdentifier(value, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, value, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, value, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -568,7 +568,7 @@ beginCompilationUnit(class)
                 handleNoType(()
                 handleIdentifier(value, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, value, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, value, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -940,7 +940,7 @@ beginCompilationUnit(class)
                 handleNoType(()
                 handleIdentifier(value, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, value, null, null, FormalParameterKind.mandatory, MemberKind.StaticMethod)
+              endFormalParameter(null, null, null, value, null, null, FormalParameterKind.requiredPositional, MemberKind.StaticMethod)
             endFormalParameters(1, (, ), MemberKind.StaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -963,7 +963,7 @@ beginCompilationUnit(class)
                 handleNoType(()
                 handleIdentifier(value, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, value, null, null, FormalParameterKind.mandatory, MemberKind.StaticMethod)
+              endFormalParameter(null, null, null, value, null, null, FormalParameterKind.requiredPositional, MemberKind.StaticMethod)
             endFormalParameters(1, (, ), MemberKind.StaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -986,7 +986,7 @@ beginCompilationUnit(class)
                 handleNoType(()
                 handleIdentifier(value, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, value, null, null, FormalParameterKind.mandatory, MemberKind.StaticMethod)
+              endFormalParameter(null, null, null, value, null, null, FormalParameterKind.requiredPositional, MemberKind.StaticMethod)
             endFormalParameters(1, (, ), MemberKind.StaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -1009,7 +1009,7 @@ beginCompilationUnit(class)
                 handleNoType(()
                 handleIdentifier(value, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, value, null, null, FormalParameterKind.mandatory, MemberKind.StaticMethod)
+              endFormalParameter(null, null, null, value, null, null, FormalParameterKind.requiredPositional, MemberKind.StaticMethod)
             endFormalParameters(1, (, ), MemberKind.StaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)

pkg/front_end/parser_testcases/augmentation/member_errors.dart.intertwined.expect

@@ -429,7 +429,7 @@ parseUnit(class)
                   parseFormalParameters(setter, MemberKind.NonStaticMethod)
                     parseFormalParametersRest((, MemberKind.NonStaticMethod)
                       listener: beginFormalParameters((, MemberKind.NonStaticMethod)
-                      parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                      parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(()
                           listener: beginMetadataStar(value)
                           listener: endMetadataStar(0)
@@ -438,7 +438,7 @@ parseUnit(class)
                         ensureIdentifier((, formalParameterDeclaration)
                           listener: handleIdentifier(value, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue())
-                        listener: endFormalParameter(null, null, null, value, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, value, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                       listener: endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
                 parseInitializersOpt())
                   listener: handleNoInitializers()
@@ -472,7 +472,7 @@ parseUnit(class)
                   parseFormalParameters(setter, MemberKind.NonStaticMethod)
                     parseFormalParametersRest((, MemberKind.NonStaticMethod)
                       listener: beginFormalParameters((, MemberKind.NonStaticMethod)
-                      parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                      parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(()
                           listener: beginMetadataStar(value)
                           listener: endMetadataStar(0)
@@ -481,7 +481,7 @@ parseUnit(class)
                         ensureIdentifier((, formalParameterDeclaration)
                           listener: handleIdentifier(value, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue())
-                        listener: endFormalParameter(null, null, null, value, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, value, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                       listener: endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
                 parseInitializersOpt())
                   listener: handleNoInitializers()
@@ -513,7 +513,7 @@ parseUnit(class)
                   parseFormalParameters(setter, MemberKind.NonStaticMethod)
                     parseFormalParametersRest((, MemberKind.NonStaticMethod)
                       listener: beginFormalParameters((, MemberKind.NonStaticMethod)
-                      parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                      parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(()
                           listener: beginMetadataStar(value)
                           listener: endMetadataStar(0)
@@ -522,7 +522,7 @@ parseUnit(class)
                         ensureIdentifier((, formalParameterDeclaration)
                           listener: handleIdentifier(value, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue())
-                        listener: endFormalParameter(null, null, null, value, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, value, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                       listener: endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
                 parseInitializersOpt())
                   listener: handleNoInitializers()
@@ -554,7 +554,7 @@ parseUnit(class)
                   parseFormalParameters(setter, MemberKind.NonStaticMethod)
                     parseFormalParametersRest((, MemberKind.NonStaticMethod)
                       listener: beginFormalParameters((, MemberKind.NonStaticMethod)
-                      parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                      parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(()
                           listener: beginMetadataStar(value)
                           listener: endMetadataStar(0)
@@ -563,7 +563,7 @@ parseUnit(class)
                         ensureIdentifier((, formalParameterDeclaration)
                           listener: handleIdentifier(value, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue())
-                        listener: endFormalParameter(null, null, null, value, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, value, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                       listener: endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
                 parseInitializersOpt())
                   listener: handleNoInitializers()
@@ -597,7 +597,7 @@ parseUnit(class)
                   parseFormalParameters(setter, MemberKind.NonStaticMethod)
                     parseFormalParametersRest((, MemberKind.NonStaticMethod)
                       listener: beginFormalParameters((, MemberKind.NonStaticMethod)
-                      parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                      parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(()
                           listener: beginMetadataStar(value)
                           listener: endMetadataStar(0)
@@ -606,7 +606,7 @@ parseUnit(class)
                         ensureIdentifier((, formalParameterDeclaration)
                           listener: handleIdentifier(value, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue())
-                        listener: endFormalParameter(null, null, null, value, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, value, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                       listener: endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
                 parseInitializersOpt())
                   listener: handleNoInitializers()
@@ -638,7 +638,7 @@ parseUnit(class)
                   parseFormalParameters(setter, MemberKind.NonStaticMethod)
                     parseFormalParametersRest((, MemberKind.NonStaticMethod)
                       listener: beginFormalParameters((, MemberKind.NonStaticMethod)
-                      parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                      parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(()
                           listener: beginMetadataStar(value)
                           listener: endMetadataStar(0)
@@ -647,7 +647,7 @@ parseUnit(class)
                         ensureIdentifier((, formalParameterDeclaration)
                           listener: handleIdentifier(value, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue())
-                        listener: endFormalParameter(null, null, null, value, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, value, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                       listener: endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
                 parseInitializersOpt())
                   listener: handleNoInitializers()
@@ -1332,7 +1332,7 @@ parseUnit(class)
                   parseFormalParameters(setter, MemberKind.StaticMethod)
                     parseFormalParametersRest((, MemberKind.StaticMethod)
                       listener: beginFormalParameters((, MemberKind.StaticMethod)
-                      parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.StaticMethod)
+                      parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.StaticMethod)
                         parseMetadataStar(()
                           listener: beginMetadataStar(value)
                           listener: endMetadataStar(0)
@@ -1341,7 +1341,7 @@ parseUnit(class)
                         ensureIdentifier((, formalParameterDeclaration)
                           listener: handleIdentifier(value, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue())
-                        listener: endFormalParameter(null, null, null, value, null, null, FormalParameterKind.mandatory, MemberKind.StaticMethod)
+                        listener: endFormalParameter(null, null, null, value, null, null, FormalParameterKind.requiredPositional, MemberKind.StaticMethod)
                       listener: endFormalParameters(1, (, ), MemberKind.StaticMethod)
                 parseInitializersOpt())
                   listener: handleNoInitializers()
@@ -1374,7 +1374,7 @@ parseUnit(class)
                   parseFormalParameters(setter, MemberKind.StaticMethod)
                     parseFormalParametersRest((, MemberKind.StaticMethod)
                       listener: beginFormalParameters((, MemberKind.StaticMethod)
-                      parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.StaticMethod)
+                      parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.StaticMethod)
                         parseMetadataStar(()
                           listener: beginMetadataStar(value)
                           listener: endMetadataStar(0)
@@ -1383,7 +1383,7 @@ parseUnit(class)
                         ensureIdentifier((, formalParameterDeclaration)
                           listener: handleIdentifier(value, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue())
-                        listener: endFormalParameter(null, null, null, value, null, null, FormalParameterKind.mandatory, MemberKind.StaticMethod)
+                        listener: endFormalParameter(null, null, null, value, null, null, FormalParameterKind.requiredPositional, MemberKind.StaticMethod)
                       listener: endFormalParameters(1, (, ), MemberKind.StaticMethod)
                 parseInitializersOpt())
                   listener: handleNoInitializers()
@@ -1416,7 +1416,7 @@ parseUnit(class)
                   parseFormalParameters(setter, MemberKind.StaticMethod)
                     parseFormalParametersRest((, MemberKind.StaticMethod)
                       listener: beginFormalParameters((, MemberKind.StaticMethod)
-                      parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.StaticMethod)
+                      parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.StaticMethod)
                         parseMetadataStar(()
                           listener: beginMetadataStar(value)
                           listener: endMetadataStar(0)
@@ -1425,7 +1425,7 @@ parseUnit(class)
                         ensureIdentifier((, formalParameterDeclaration)
                           listener: handleIdentifier(value, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue())
-                        listener: endFormalParameter(null, null, null, value, null, null, FormalParameterKind.mandatory, MemberKind.StaticMethod)
+                        listener: endFormalParameter(null, null, null, value, null, null, FormalParameterKind.requiredPositional, MemberKind.StaticMethod)
                       listener: endFormalParameters(1, (, ), MemberKind.StaticMethod)
                 parseInitializersOpt())
                   listener: handleNoInitializers()
@@ -1458,7 +1458,7 @@ parseUnit(class)
                   parseFormalParameters(setter, MemberKind.StaticMethod)
                     parseFormalParametersRest((, MemberKind.StaticMethod)
                       listener: beginFormalParameters((, MemberKind.StaticMethod)
-                      parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.StaticMethod)
+                      parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.StaticMethod)
                         parseMetadataStar(()
                           listener: beginMetadataStar(value)
                           listener: endMetadataStar(0)
@@ -1467,7 +1467,7 @@ parseUnit(class)
                         ensureIdentifier((, formalParameterDeclaration)
                           listener: handleIdentifier(value, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue())
-                        listener: endFormalParameter(null, null, null, value, null, null, FormalParameterKind.mandatory, MemberKind.StaticMethod)
+                        listener: endFormalParameter(null, null, null, value, null, null, FormalParameterKind.requiredPositional, MemberKind.StaticMethod)
                       listener: endFormalParameters(1, (, ), MemberKind.StaticMethod)
                 parseInitializersOpt())
                   listener: handleNoInitializers()

pkg/front_end/parser_testcases/augmentation/top_level_declarations.dart.expect

@@ -69,7 +69,7 @@ beginCompilationUnit(augment)
           handleNoType(()
           handleIdentifier(value, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, value, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, value, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -90,7 +90,7 @@ beginCompilationUnit(augment)
           handleNoType(()
           handleIdentifier(value, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, value, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, value, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)

pkg/front_end/parser_testcases/augmentation/top_level_declarations.dart.intertwined.expect

@@ -139,7 +139,7 @@ parseUnit(augment)
           parseFormalParameters(setter, MemberKind.TopLevelMethod)
             parseFormalParametersRest((, MemberKind.TopLevelMethod)
               listener: beginFormalParameters((, MemberKind.TopLevelMethod)
-              parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+              parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
                 parseMetadataStar(()
                   listener: beginMetadataStar(value)
                   listener: endMetadataStar(0)
@@ -148,7 +148,7 @@ parseUnit(augment)
                 ensureIdentifier((, formalParameterDeclaration)
                   listener: handleIdentifier(value, formalParameterDeclaration)
                 listener: handleFormalParameterWithoutValue())
-                listener: endFormalParameter(null, null, null, value, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+                listener: endFormalParameter(null, null, null, value, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
               listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
         parseAsyncModifierOpt())
           listener: handleAsyncModifier(null, null)
@@ -176,7 +176,7 @@ parseUnit(augment)
           parseFormalParameters(setter, MemberKind.TopLevelMethod)
             parseFormalParametersRest((, MemberKind.TopLevelMethod)
               listener: beginFormalParameters((, MemberKind.TopLevelMethod)
-              parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+              parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
                 parseMetadataStar(()
                   listener: beginMetadataStar(value)
                   listener: endMetadataStar(0)
@@ -185,7 +185,7 @@ parseUnit(augment)
                 ensureIdentifier((, formalParameterDeclaration)
                   listener: handleIdentifier(value, formalParameterDeclaration)
                 listener: handleFormalParameterWithoutValue())
-                listener: endFormalParameter(null, null, null, value, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+                listener: endFormalParameter(null, null, null, value, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
               listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
         parseAsyncModifierOpt())
           listener: handleAsyncModifier(null, null)

pkg/front_end/parser_testcases/augmentation/top_level_errors.dart.expect

@@ -304,7 +304,7 @@ beginCompilationUnit(augment)
           handleNoType(()
           handleIdentifier(value, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, value, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, value, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -326,7 +326,7 @@ beginCompilationUnit(augment)
           handleNoType(()
           handleIdentifier(value, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, value, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, value, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       handleEmptyFunctionBody(;)
@@ -347,7 +347,7 @@ beginCompilationUnit(augment)
           handleNoType(()
           handleIdentifier(value, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, value, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, value, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       handleEmptyFunctionBody(;)
@@ -368,7 +368,7 @@ beginCompilationUnit(augment)
           handleNoType(()
           handleIdentifier(value, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, value, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, value, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -390,7 +390,7 @@ beginCompilationUnit(augment)
           handleNoType(()
           handleIdentifier(value, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, value, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, value, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       handleEmptyFunctionBody(;)
@@ -411,7 +411,7 @@ beginCompilationUnit(augment)
           handleNoType(()
           handleIdentifier(value, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, value, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, value, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       handleEmptyFunctionBody(;)

pkg/front_end/parser_testcases/augmentation/top_level_errors.dart.intertwined.expect

@@ -361,7 +361,7 @@ parseUnit(augment)
           parseFormalParameters(setter, MemberKind.TopLevelMethod)
             parseFormalParametersRest((, MemberKind.TopLevelMethod)
               listener: beginFormalParameters((, MemberKind.TopLevelMethod)
-              parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+              parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
                 parseMetadataStar(()
                   listener: beginMetadataStar(value)
                   listener: endMetadataStar(0)
@@ -370,7 +370,7 @@ parseUnit(augment)
                 ensureIdentifier((, formalParameterDeclaration)
                   listener: handleIdentifier(value, formalParameterDeclaration)
                 listener: handleFormalParameterWithoutValue())
-                listener: endFormalParameter(null, null, null, value, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+                listener: endFormalParameter(null, null, null, value, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
               listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
         parseAsyncModifierOpt())
           listener: handleAsyncModifier(null, null)
@@ -401,7 +401,7 @@ parseUnit(augment)
           parseFormalParameters(setter, MemberKind.TopLevelMethod)
             parseFormalParametersRest((, MemberKind.TopLevelMethod)
               listener: beginFormalParameters((, MemberKind.TopLevelMethod)
-              parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+              parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
                 parseMetadataStar(()
                   listener: beginMetadataStar(value)
                   listener: endMetadataStar(0)
@@ -410,7 +410,7 @@ parseUnit(augment)
                 ensureIdentifier((, formalParameterDeclaration)
                   listener: handleIdentifier(value, formalParameterDeclaration)
                 listener: handleFormalParameterWithoutValue())
-                listener: endFormalParameter(null, null, null, value, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+                listener: endFormalParameter(null, null, null, value, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
               listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
         parseAsyncModifierOpt())
           listener: handleAsyncModifier(null, null)
@@ -439,7 +439,7 @@ parseUnit(augment)
           parseFormalParameters(setter, MemberKind.TopLevelMethod)
             parseFormalParametersRest((, MemberKind.TopLevelMethod)
               listener: beginFormalParameters((, MemberKind.TopLevelMethod)
-              parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+              parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
                 parseMetadataStar(()
                   listener: beginMetadataStar(value)
                   listener: endMetadataStar(0)
@@ -448,7 +448,7 @@ parseUnit(augment)
                 ensureIdentifier((, formalParameterDeclaration)
                   listener: handleIdentifier(value, formalParameterDeclaration)
                 listener: handleFormalParameterWithoutValue())
-                listener: endFormalParameter(null, null, null, value, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+                listener: endFormalParameter(null, null, null, value, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
               listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
         parseAsyncModifierOpt())
           listener: handleAsyncModifier(null, null)
@@ -476,7 +476,7 @@ parseUnit(augment)
           parseFormalParameters(setter, MemberKind.TopLevelMethod)
             parseFormalParametersRest((, MemberKind.TopLevelMethod)
               listener: beginFormalParameters((, MemberKind.TopLevelMethod)
-              parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+              parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
                 parseMetadataStar(()
                   listener: beginMetadataStar(value)
                   listener: endMetadataStar(0)
@@ -485,7 +485,7 @@ parseUnit(augment)
                 ensureIdentifier((, formalParameterDeclaration)
                   listener: handleIdentifier(value, formalParameterDeclaration)
                 listener: handleFormalParameterWithoutValue())
-                listener: endFormalParameter(null, null, null, value, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+                listener: endFormalParameter(null, null, null, value, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
               listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
         parseAsyncModifierOpt())
           listener: handleAsyncModifier(null, null)
@@ -515,7 +515,7 @@ parseUnit(augment)
           parseFormalParameters(setter, MemberKind.TopLevelMethod)
             parseFormalParametersRest((, MemberKind.TopLevelMethod)
               listener: beginFormalParameters((, MemberKind.TopLevelMethod)
-              parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+              parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
                 parseMetadataStar(()
                   listener: beginMetadataStar(value)
                   listener: endMetadataStar(0)
@@ -524,7 +524,7 @@ parseUnit(augment)
                 ensureIdentifier((, formalParameterDeclaration)
                   listener: handleIdentifier(value, formalParameterDeclaration)
                 listener: handleFormalParameterWithoutValue())
-                listener: endFormalParameter(null, null, null, value, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+                listener: endFormalParameter(null, null, null, value, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
               listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
         parseAsyncModifierOpt())
           listener: handleAsyncModifier(null, null)
@@ -552,7 +552,7 @@ parseUnit(augment)
           parseFormalParameters(setter, MemberKind.TopLevelMethod)
             parseFormalParametersRest((, MemberKind.TopLevelMethod)
               listener: beginFormalParameters((, MemberKind.TopLevelMethod)
-              parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+              parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
                 parseMetadataStar(()
                   listener: beginMetadataStar(value)
                   listener: endMetadataStar(0)
@@ -561,7 +561,7 @@ parseUnit(augment)
                 ensureIdentifier((, formalParameterDeclaration)
                   listener: handleIdentifier(value, formalParameterDeclaration)
                 listener: handleFormalParameterWithoutValue())
-                listener: endFormalParameter(null, null, null, value, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+                listener: endFormalParameter(null, null, null, value, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
               listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
         parseAsyncModifierOpt())
           listener: handleAsyncModifier(null, null)

pkg/front_end/parser_testcases/enhanced_enums/entries_with_type_arguments.dart.expect

@@ -110,7 +110,7 @@ beginCompilationUnit(enum)
               handleType(int, null)
               handleIdentifier(value, formalParameterDeclaration)
               handleFormalParameterWithoutValue())
-            endFormalParameter(null, null, null, value, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+            endFormalParameter(null, null, null, value, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
           endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
           handleNoInitializers()
           handleAsyncModifier(null, null)

pkg/front_end/parser_testcases/enhanced_enums/entries_with_type_arguments.dart.intertwined.expect

@@ -165,7 +165,7 @@ parseUnit(enum)
               parseFormalParameters(named, MemberKind.NonStaticMethod)
                 parseFormalParametersRest((, MemberKind.NonStaticMethod)
                   listener: beginFormalParameters((, MemberKind.NonStaticMethod)
-                  parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                  parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                     parseMetadataStar(()
                       listener: beginMetadataStar(int)
                       listener: endMetadataStar(0)
@@ -176,7 +176,7 @@ parseUnit(enum)
                     ensureIdentifier(int, formalParameterDeclaration)
                       listener: handleIdentifier(value, formalParameterDeclaration)
                     listener: handleFormalParameterWithoutValue())
-                    listener: endFormalParameter(null, null, null, value, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                    listener: endFormalParameter(null, null, null, value, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                   listener: endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             parseInitializersOpt())
               listener: handleNoInitializers()

pkg/front_end/parser_testcases/error_recovery/extension_member_contributor_test_completion.dart.expect

@@ -51,7 +51,7 @@ beginCompilationUnit(extension)
                 handleType(int, null)
                 handleIdentifier(b, formalParameterDeclaration)
                 handleFormalParameterWithoutValue(,)
-              endFormalParameter(null, null, null, b, null, null, FormalParameterKind.mandatory, MemberKind.ExtensionNonStaticMethod)
+              endFormalParameter(null, null, null, b, null, null, FormalParameterKind.requiredPositional, MemberKind.ExtensionNonStaticMethod)
               beginMetadataStar(int)
               endMetadataStar(0)
               beginFormalParameter(int, MemberKind.ExtensionNonStaticMethod, null, null, null)
@@ -60,7 +60,7 @@ beginCompilationUnit(extension)
                 handleType(int, null)
                 handleIdentifier(c, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, c, null, null, FormalParameterKind.mandatory, MemberKind.ExtensionNonStaticMethod)
+              endFormalParameter(null, null, null, c, null, null, FormalParameterKind.requiredPositional, MemberKind.ExtensionNonStaticMethod)
             endFormalParameters(2, (, ), MemberKind.ExtensionNonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -100,7 +100,7 @@ beginCompilationUnit(extension)
                 handleType(int, null)
                 handleIdentifier(d, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, d, null, null, FormalParameterKind.mandatory, MemberKind.ExtensionNonStaticMethod)
+              endFormalParameter(null, null, null, d, null, null, FormalParameterKind.requiredPositional, MemberKind.ExtensionNonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.ExtensionNonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -131,7 +131,7 @@ beginCompilationUnit(extension)
           handleType(List, null)
           handleIdentifier(l, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, l, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, l, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -169,7 +169,7 @@ beginCompilationUnit(extension)
           handleType(List, null)
           handleIdentifier(l, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, l, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, l, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)

pkg/front_end/parser_testcases/error_recovery/extension_member_contributor_test_completion.dart.intertwined.expect

@@ -53,7 +53,7 @@ parseUnit(extension)
                 parseFormalParameters(a, MemberKind.ExtensionNonStaticMethod)
                   parseFormalParametersRest((, MemberKind.ExtensionNonStaticMethod)
                     listener: beginFormalParameters((, MemberKind.ExtensionNonStaticMethod)
-                    parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.ExtensionNonStaticMethod)
+                    parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.ExtensionNonStaticMethod)
                       parseMetadataStar(()
                         listener: beginMetadataStar(int)
                         listener: endMetadataStar(0)
@@ -64,8 +64,8 @@ parseUnit(extension)
                       ensureIdentifier(int, formalParameterDeclaration)
                         listener: handleIdentifier(b, formalParameterDeclaration)
                       listener: handleFormalParameterWithoutValue(,)
-                      listener: endFormalParameter(null, null, null, b, null, null, FormalParameterKind.mandatory, MemberKind.ExtensionNonStaticMethod)
-                    parseFormalParameter(,, FormalParameterKind.mandatory, MemberKind.ExtensionNonStaticMethod)
+                      listener: endFormalParameter(null, null, null, b, null, null, FormalParameterKind.requiredPositional, MemberKind.ExtensionNonStaticMethod)
+                    parseFormalParameter(,, FormalParameterKind.requiredPositional, MemberKind.ExtensionNonStaticMethod)
                       parseMetadataStar(,)
                         listener: beginMetadataStar(int)
                         listener: endMetadataStar(0)
@@ -76,7 +76,7 @@ parseUnit(extension)
                       ensureIdentifier(int, formalParameterDeclaration)
                         listener: handleIdentifier(c, formalParameterDeclaration)
                       listener: handleFormalParameterWithoutValue())
-                      listener: endFormalParameter(null, null, null, c, null, null, FormalParameterKind.mandatory, MemberKind.ExtensionNonStaticMethod)
+                      listener: endFormalParameter(null, null, null, c, null, null, FormalParameterKind.requiredPositional, MemberKind.ExtensionNonStaticMethod)
                     listener: endFormalParameters(2, (, ), MemberKind.ExtensionNonStaticMethod)
               parseInitializersOpt())
                 listener: handleNoInitializers()
@@ -144,7 +144,7 @@ parseUnit(extension)
                 parseFormalParameters(c, MemberKind.ExtensionNonStaticMethod)
                   parseFormalParametersRest((, MemberKind.ExtensionNonStaticMethod)
                     listener: beginFormalParameters((, MemberKind.ExtensionNonStaticMethod)
-                    parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.ExtensionNonStaticMethod)
+                    parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.ExtensionNonStaticMethod)
                       parseMetadataStar(()
                         listener: beginMetadataStar(int)
                         listener: endMetadataStar(0)
@@ -155,7 +155,7 @@ parseUnit(extension)
                       ensureIdentifier(int, formalParameterDeclaration)
                         listener: handleIdentifier(d, formalParameterDeclaration)
                       listener: handleFormalParameterWithoutValue())
-                      listener: endFormalParameter(null, null, null, d, null, null, FormalParameterKind.mandatory, MemberKind.ExtensionNonStaticMethod)
+                      listener: endFormalParameter(null, null, null, d, null, null, FormalParameterKind.requiredPositional, MemberKind.ExtensionNonStaticMethod)
                     listener: endFormalParameters(1, (, ), MemberKind.ExtensionNonStaticMethod)
               parseInitializersOpt())
                 listener: handleNoInitializers()
@@ -191,7 +191,7 @@ parseUnit(extension)
           parseFormalParameters(f, MemberKind.TopLevelMethod)
             parseFormalParametersRest((, MemberKind.TopLevelMethod)
               listener: beginFormalParameters((, MemberKind.TopLevelMethod)
-              parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+              parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
                 parseMetadataStar(()
                   listener: beginMetadataStar(List)
                   listener: endMetadataStar(0)
@@ -206,7 +206,7 @@ parseUnit(extension)
                 ensureIdentifier(>, formalParameterDeclaration)
                   listener: handleIdentifier(l, formalParameterDeclaration)
                 listener: handleFormalParameterWithoutValue())
-                listener: endFormalParameter(null, null, null, l, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+                listener: endFormalParameter(null, null, null, l, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
               listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
         parseAsyncModifierOpt())
           listener: handleAsyncModifier(null, null)
@@ -269,7 +269,7 @@ parseUnit(extension)
           parseFormalParameters(g, MemberKind.TopLevelMethod)
             parseFormalParametersRest((, MemberKind.TopLevelMethod)
               listener: beginFormalParameters((, MemberKind.TopLevelMethod)
-              parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+              parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
                 parseMetadataStar(()
                   listener: beginMetadataStar(List)
                   listener: endMetadataStar(0)
@@ -284,7 +284,7 @@ parseUnit(extension)
                 ensureIdentifier(>, formalParameterDeclaration)
                   listener: handleIdentifier(l, formalParameterDeclaration)
                 listener: handleFormalParameterWithoutValue())
-                listener: endFormalParameter(null, null, null, l, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+                listener: endFormalParameter(null, null, null, l, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
               listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
         parseAsyncModifierOpt())
           listener: handleAsyncModifier(null, null)

pkg/front_end/parser_testcases/error_recovery/issue_22314.dart.expect

@@ -57,7 +57,7 @@ beginCompilationUnit(const)
                 handleNoType(()
                 handleIdentifier(message, fieldInitializer)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(this, null, ., message, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(this, null, ., message, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)

pkg/front_end/parser_testcases/error_recovery/issue_22314.dart.intertwined.expect

@@ -82,7 +82,7 @@ parseUnit(const)
                   parseFormalParameters(Annotation, MemberKind.NonStaticMethod)
                     parseFormalParametersRest((, MemberKind.NonStaticMethod)
                       listener: beginFormalParameters((, MemberKind.NonStaticMethod)
-                      parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                      parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(()
                           listener: beginMetadataStar(this)
                           listener: endMetadataStar(0)
@@ -91,7 +91,7 @@ parseUnit(const)
                         ensureIdentifier(., fieldInitializer)
                           listener: handleIdentifier(message, fieldInitializer)
                         listener: handleFormalParameterWithoutValue())
-                        listener: endFormalParameter(this, null, ., message, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(this, null, ., message, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                       listener: endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
                 parseInitializersOpt())
                   listener: handleNoInitializers()

pkg/front_end/parser_testcases/error_recovery/issue_26073.dart.expect

@@ -53,7 +53,7 @@ beginCompilationUnit(typedef)
             handleType(int, null)
             handleIdentifier(x, formalParameterDeclaration)
             handleFormalParameterWithoutValue())
-          endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.GeneralizedFunctionType)
+          endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.GeneralizedFunctionType)
         endFormalParameters(1, (, ), MemberKind.GeneralizedFunctionType)
       endFunctionType(Function, null)
     endTypedef(typedef, =, ;)
@@ -76,7 +76,7 @@ beginCompilationUnit(typedef)
             handleType(int, null)
             handleIdentifier(x, formalParameterDeclaration)
             handleFormalParameterWithoutValue())
-          endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.GeneralizedFunctionType)
+          endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.GeneralizedFunctionType)
         endFormalParameters(1, (, ), MemberKind.GeneralizedFunctionType)
       endFunctionType(Function, null)
     endTypedef(typedef, =, ;)
@@ -102,7 +102,7 @@ beginCompilationUnit(typedef)
             handleType(int, null)
             handleIdentifier(x, formalParameterDeclaration)
             handleFormalParameterWithoutValue())
-          endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.GeneralizedFunctionType)
+          endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.GeneralizedFunctionType)
         endFormalParameters(1, (, ), MemberKind.GeneralizedFunctionType)
       endFunctionType(Function, null)
     endTypedef(typedef, =, ;)
@@ -126,7 +126,7 @@ beginCompilationUnit(typedef)
             handleType(int, null)
             handleIdentifier(x, formalParameterDeclaration)
             handleFormalParameterWithoutValue())
-          endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.GeneralizedFunctionType)
+          endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.GeneralizedFunctionType)
         endFormalParameters(1, (, ), MemberKind.GeneralizedFunctionType)
       endFunctionType(Function, null)
     endTypedef(typedef, =, ;)
@@ -156,7 +156,7 @@ beginCompilationUnit(typedef)
             handleType(int, null)
             handleIdentifier(x, formalParameterDeclaration)
             handleFormalParameterWithoutValue())
-          endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.GeneralizedFunctionType)
+          endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.GeneralizedFunctionType)
         endFormalParameters(1, (, ), MemberKind.GeneralizedFunctionType)
       endFunctionType(Function, null)
     endTypedef(typedef, =, ;)
@@ -188,7 +188,7 @@ beginCompilationUnit(typedef)
             handleType(int, null)
             handleIdentifier(x, formalParameterDeclaration)
             handleFormalParameterWithoutValue())
-          endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.GeneralizedFunctionType)
+          endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.GeneralizedFunctionType)
         endFormalParameters(1, (, ), MemberKind.GeneralizedFunctionType)
       endFunctionType(Function, null)
     endTypedef(typedef, =, ;)
@@ -230,7 +230,7 @@ beginCompilationUnit(typedef)
             handleType(int, null)
             handleIdentifier(x, formalParameterDeclaration)
             handleFormalParameterWithoutValue())
-          endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.GeneralizedFunctionType)
+          endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.GeneralizedFunctionType)
         endFormalParameters(1, (, ), MemberKind.GeneralizedFunctionType)
       endFunctionType(Function, null)
     endTypedef(typedef, =, ;)
@@ -286,7 +286,7 @@ beginCompilationUnit(typedef)
             handleType(int, null)
             handleIdentifier(x, formalParameterDeclaration)
             handleFormalParameterWithoutValue())
-          endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.GeneralizedFunctionType)
+          endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.GeneralizedFunctionType)
         endFormalParameters(1, (, ), MemberKind.GeneralizedFunctionType)
       endFunctionType(Function, null)
     endTypedef(typedef, =, ;)

pkg/front_end/parser_testcases/error_recovery/issue_26073.dart.intertwined.expect

@@ -22,7 +22,7 @@ parseUnit(typedef)
         parseFormalParametersRequiredOpt(Function, MemberKind.GeneralizedFunctionType)
           parseFormalParametersRest((, MemberKind.GeneralizedFunctionType)
             listener: beginFormalParameters((, MemberKind.GeneralizedFunctionType)
-            parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.GeneralizedFunctionType)
+            parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.GeneralizedFunctionType)
               parseMetadataStar(()
                 listener: beginMetadataStar(int)
                 listener: endMetadataStar(0)
@@ -33,7 +33,7 @@ parseUnit(typedef)
               ensureIdentifier(int, formalParameterDeclaration)
                 listener: handleIdentifier(x, formalParameterDeclaration)
               listener: handleFormalParameterWithoutValue())
-              listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.GeneralizedFunctionType)
+              listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.GeneralizedFunctionType)
             listener: endFormalParameters(1, (, ), MemberKind.GeneralizedFunctionType)
         listener: endFunctionType(Function, null)
         ensureSemicolon())
@@ -56,7 +56,7 @@ parseUnit(typedef)
         parseFormalParametersRequiredOpt(Function, MemberKind.GeneralizedFunctionType)
           parseFormalParametersRest((, MemberKind.GeneralizedFunctionType)
             listener: beginFormalParameters((, MemberKind.GeneralizedFunctionType)
-            parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.GeneralizedFunctionType)
+            parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.GeneralizedFunctionType)
               parseMetadataStar(()
                 listener: beginMetadataStar(int)
                 listener: endMetadataStar(0)
@@ -67,7 +67,7 @@ parseUnit(typedef)
               ensureIdentifier(int, formalParameterDeclaration)
                 listener: handleIdentifier(x, formalParameterDeclaration)
               listener: handleFormalParameterWithoutValue())
-              listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.GeneralizedFunctionType)
+              listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.GeneralizedFunctionType)
             listener: endFormalParameters(1, (, ), MemberKind.GeneralizedFunctionType)
         listener: endFunctionType(Function, null)
         ensureSemicolon())
@@ -96,7 +96,7 @@ parseUnit(typedef)
         parseFormalParametersRequiredOpt(Function, MemberKind.GeneralizedFunctionType)
           parseFormalParametersRest((, MemberKind.GeneralizedFunctionType)
             listener: beginFormalParameters((, MemberKind.GeneralizedFunctionType)
-            parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.GeneralizedFunctionType)
+            parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.GeneralizedFunctionType)
               parseMetadataStar(()
                 listener: beginMetadataStar(int)
                 listener: endMetadataStar(0)
@@ -107,7 +107,7 @@ parseUnit(typedef)
               ensureIdentifier(int, formalParameterDeclaration)
                 listener: handleIdentifier(x, formalParameterDeclaration)
               listener: handleFormalParameterWithoutValue())
-              listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.GeneralizedFunctionType)
+              listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.GeneralizedFunctionType)
             listener: endFormalParameters(1, (, ), MemberKind.GeneralizedFunctionType)
         listener: endFunctionType(Function, null)
         ensureSemicolon())
@@ -133,7 +133,7 @@ parseUnit(typedef)
         parseFormalParametersRequiredOpt(Function, MemberKind.GeneralizedFunctionType)
           parseFormalParametersRest((, MemberKind.GeneralizedFunctionType)
             listener: beginFormalParameters((, MemberKind.GeneralizedFunctionType)
-            parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.GeneralizedFunctionType)
+            parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.GeneralizedFunctionType)
               parseMetadataStar(()
                 listener: beginMetadataStar(int)
                 listener: endMetadataStar(0)
@@ -144,7 +144,7 @@ parseUnit(typedef)
               ensureIdentifier(int, formalParameterDeclaration)
                 listener: handleIdentifier(x, formalParameterDeclaration)
               listener: handleFormalParameterWithoutValue())
-              listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.GeneralizedFunctionType)
+              listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.GeneralizedFunctionType)
             listener: endFormalParameters(1, (, ), MemberKind.GeneralizedFunctionType)
         listener: endFunctionType(Function, null)
         ensureSemicolon())
@@ -177,7 +177,7 @@ parseUnit(typedef)
         parseFormalParametersRequiredOpt(Function, MemberKind.GeneralizedFunctionType)
           parseFormalParametersRest((, MemberKind.GeneralizedFunctionType)
             listener: beginFormalParameters((, MemberKind.GeneralizedFunctionType)
-            parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.GeneralizedFunctionType)
+            parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.GeneralizedFunctionType)
               parseMetadataStar(()
                 listener: beginMetadataStar(int)
                 listener: endMetadataStar(0)
@@ -188,7 +188,7 @@ parseUnit(typedef)
               ensureIdentifier(int, formalParameterDeclaration)
                 listener: handleIdentifier(x, formalParameterDeclaration)
               listener: handleFormalParameterWithoutValue())
-              listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.GeneralizedFunctionType)
+              listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.GeneralizedFunctionType)
             listener: endFormalParameters(1, (, ), MemberKind.GeneralizedFunctionType)
         listener: endFunctionType(Function, null)
         ensureSemicolon())
@@ -222,7 +222,7 @@ parseUnit(typedef)
         parseFormalParametersRequiredOpt(>, MemberKind.GeneralizedFunctionType)
           parseFormalParametersRest((, MemberKind.GeneralizedFunctionType)
             listener: beginFormalParameters((, MemberKind.GeneralizedFunctionType)
-            parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.GeneralizedFunctionType)
+            parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.GeneralizedFunctionType)
               parseMetadataStar(()
                 listener: beginMetadataStar(int)
                 listener: endMetadataStar(0)
@@ -233,7 +233,7 @@ parseUnit(typedef)
               ensureIdentifier(int, formalParameterDeclaration)
                 listener: handleIdentifier(x, formalParameterDeclaration)
               listener: handleFormalParameterWithoutValue())
-              listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.GeneralizedFunctionType)
+              listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.GeneralizedFunctionType)
             listener: endFormalParameters(1, (, ), MemberKind.GeneralizedFunctionType)
         listener: endFunctionType(Function, null)
         ensureSemicolon())
@@ -278,7 +278,7 @@ parseUnit(typedef)
         parseFormalParametersRequiredOpt(Function, MemberKind.GeneralizedFunctionType)
           parseFormalParametersRest((, MemberKind.GeneralizedFunctionType)
             listener: beginFormalParameters((, MemberKind.GeneralizedFunctionType)
-            parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.GeneralizedFunctionType)
+            parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.GeneralizedFunctionType)
               parseMetadataStar(()
                 listener: beginMetadataStar(int)
                 listener: endMetadataStar(0)
@@ -289,7 +289,7 @@ parseUnit(typedef)
               ensureIdentifier(int, formalParameterDeclaration)
                 listener: handleIdentifier(x, formalParameterDeclaration)
               listener: handleFormalParameterWithoutValue())
-              listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.GeneralizedFunctionType)
+              listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.GeneralizedFunctionType)
             listener: endFormalParameters(1, (, ), MemberKind.GeneralizedFunctionType)
         listener: endFunctionType(Function, null)
         ensureSemicolon())
@@ -357,7 +357,7 @@ parseUnit(typedef)
         parseFormalParametersRequiredOpt(>, MemberKind.GeneralizedFunctionType)
           parseFormalParametersRest((, MemberKind.GeneralizedFunctionType)
             listener: beginFormalParameters((, MemberKind.GeneralizedFunctionType)
-            parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.GeneralizedFunctionType)
+            parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.GeneralizedFunctionType)
               parseMetadataStar(()
                 listener: beginMetadataStar(int)
                 listener: endMetadataStar(0)
@@ -368,7 +368,7 @@ parseUnit(typedef)
               ensureIdentifier(int, formalParameterDeclaration)
                 listener: handleIdentifier(x, formalParameterDeclaration)
               listener: handleFormalParameterWithoutValue())
-              listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.GeneralizedFunctionType)
+              listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.GeneralizedFunctionType)
             listener: endFormalParameters(1, (, ), MemberKind.GeneralizedFunctionType)
         listener: endFunctionType(Function, null)
         ensureSemicolon())

pkg/front_end/parser_testcases/error_recovery/issue_26810.dart.expect

@@ -387,7 +387,7 @@ beginCompilationUnit(abstract)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue(,)
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
               beginMetadataStar(int)
               endMetadataStar(0)
               beginFormalParameter(int, MemberKind.NonStaticMethod, null, null, null)
@@ -396,7 +396,7 @@ beginCompilationUnit(abstract)
                 handleType(int, null)
                 handleIdentifier(y, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, y, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, y, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(2, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -432,7 +432,7 @@ beginCompilationUnit(abstract)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue(,)
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
               beginMetadataStar(int)
               endMetadataStar(0)
               beginFormalParameter(int, MemberKind.NonStaticMethod, null, null, null)
@@ -441,7 +441,7 @@ beginCompilationUnit(abstract)
                 handleType(int, null)
                 handleIdentifier(y, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, y, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, y, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(2, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -476,7 +476,7 @@ beginCompilationUnit(abstract)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue(,)
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
               beginMetadataStar(int)
               endMetadataStar(0)
               beginFormalParameter(int, MemberKind.NonStaticMethod, null, null, null)
@@ -485,7 +485,7 @@ beginCompilationUnit(abstract)
                 handleType(int, null)
                 handleIdentifier(y, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, y, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, y, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(2, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -524,7 +524,7 @@ beginCompilationUnit(abstract)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue(,)
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
               beginMetadataStar(int)
               endMetadataStar(0)
               beginFormalParameter(int, MemberKind.NonStaticMethod, null, null, null)
@@ -533,7 +533,7 @@ beginCompilationUnit(abstract)
                 handleType(int, null)
                 handleIdentifier(y, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, y, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, y, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(2, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -571,7 +571,7 @@ beginCompilationUnit(abstract)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue(,)
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
               beginMetadataStar(int)
               endMetadataStar(0)
               beginFormalParameter(int, MemberKind.NonStaticMethod, null, null, null)
@@ -580,7 +580,7 @@ beginCompilationUnit(abstract)
                 handleType(int, null)
                 handleIdentifier(y, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, y, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, y, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(2, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -635,7 +635,7 @@ beginCompilationUnit(abstract)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue(,)
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
               beginMetadataStar(int)
               endMetadataStar(0)
               beginFormalParameter(int, MemberKind.NonStaticMethod, null, null, null)
@@ -644,7 +644,7 @@ beginCompilationUnit(abstract)
                 handleType(int, null)
                 handleIdentifier(y, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, y, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, y, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(2, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -698,7 +698,7 @@ beginCompilationUnit(abstract)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue(,)
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
               beginMetadataStar(int)
               endMetadataStar(0)
               beginFormalParameter(int, MemberKind.NonStaticMethod, null, null, null)
@@ -707,7 +707,7 @@ beginCompilationUnit(abstract)
                 handleType(int, null)
                 handleIdentifier(y, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, y, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, y, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(2, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -749,7 +749,7 @@ beginCompilationUnit(abstract)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue(,)
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
               beginMetadataStar(int)
               endMetadataStar(0)
               beginFormalParameter(int, MemberKind.NonStaticMethod, null, null, null)
@@ -758,7 +758,7 @@ beginCompilationUnit(abstract)
                 handleType(int, null)
                 handleIdentifier(y, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, y, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, y, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(2, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -799,7 +799,7 @@ beginCompilationUnit(abstract)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue(,)
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
               beginMetadataStar(int)
               endMetadataStar(0)
               beginFormalParameter(int, MemberKind.NonStaticMethod, null, null, null)
@@ -808,7 +808,7 @@ beginCompilationUnit(abstract)
                 handleType(int, null)
                 handleIdentifier(y, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, y, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, y, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(2, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -853,7 +853,7 @@ beginCompilationUnit(abstract)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue(,)
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
               beginMetadataStar(int)
               endMetadataStar(0)
               beginFormalParameter(int, MemberKind.NonStaticMethod, null, null, null)
@@ -862,7 +862,7 @@ beginCompilationUnit(abstract)
                 handleType(int, null)
                 handleIdentifier(y, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, y, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, y, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(2, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -904,7 +904,7 @@ beginCompilationUnit(abstract)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue(,)
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
               beginMetadataStar(int)
               endMetadataStar(0)
               beginFormalParameter(int, MemberKind.NonStaticMethod, null, null, null)
@@ -913,7 +913,7 @@ beginCompilationUnit(abstract)
                 handleType(int, null)
                 handleIdentifier(y, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, y, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, y, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(2, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -991,7 +991,7 @@ beginCompilationUnit(abstract)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue(,)
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
               beginMetadataStar(int)
               endMetadataStar(0)
               beginFormalParameter(int, MemberKind.NonStaticMethod, null, null, null)
@@ -1000,7 +1000,7 @@ beginCompilationUnit(abstract)
                 handleType(int, null)
                 handleIdentifier(y, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, y, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, y, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(2, (, ), MemberKind.NonStaticMethod)
             beginInitializers(:)
               beginInitializer(foo)
@@ -1082,7 +1082,7 @@ beginCompilationUnit(abstract)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue(,)
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
               beginMetadataStar(int)
               endMetadataStar(0)
               beginFormalParameter(int, MemberKind.NonStaticMethod, null, null, null)
@@ -1091,7 +1091,7 @@ beginCompilationUnit(abstract)
                 handleType(int, null)
                 handleIdentifier(y, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, y, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, y, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(2, (, ), MemberKind.NonStaticMethod)
             beginInitializers(:)
               beginInitializer(foo)
@@ -1170,7 +1170,7 @@ beginCompilationUnit(abstract)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue(,)
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
               beginMetadataStar(int)
               endMetadataStar(0)
               beginFormalParameter(int, MemberKind.NonStaticMethod, null, null, null)
@@ -1179,7 +1179,7 @@ beginCompilationUnit(abstract)
                 handleType(int, null)
                 handleIdentifier(y, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, y, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, y, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(2, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)

pkg/front_end/parser_testcases/error_recovery/issue_26810.dart.intertwined.expect

@@ -779,7 +779,7 @@ parseUnit(abstract)
                   parseFormalParameters(i, MemberKind.NonStaticMethod)
                     parseFormalParametersRest((, MemberKind.NonStaticMethod)
                       listener: beginFormalParameters((, MemberKind.NonStaticMethod)
-                      parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                      parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(()
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -790,8 +790,8 @@ parseUnit(abstract)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(x, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue(,)
-                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
-                      parseFormalParameter(,, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
+                      parseFormalParameter(,, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(,)
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -802,7 +802,7 @@ parseUnit(abstract)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(y, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue())
-                        listener: endFormalParameter(null, null, null, y, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, y, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                       listener: endFormalParameters(2, (, ), MemberKind.NonStaticMethod)
                 parseInitializersOpt())
                   listener: handleNoInitializers()
@@ -876,7 +876,7 @@ parseUnit(abstract)
                   parseFormalParameters(j, MemberKind.NonStaticMethod)
                     parseFormalParametersRest((, MemberKind.NonStaticMethod)
                       listener: beginFormalParameters((, MemberKind.NonStaticMethod)
-                      parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                      parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(()
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -887,8 +887,8 @@ parseUnit(abstract)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(x, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue(,)
-                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
-                      parseFormalParameter(,, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
+                      parseFormalParameter(,, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(,)
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -899,7 +899,7 @@ parseUnit(abstract)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(y, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue())
-                        listener: endFormalParameter(null, null, null, y, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, y, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                       listener: endFormalParameters(2, (, ), MemberKind.NonStaticMethod)
                 parseInitializersOpt())
                   listener: handleNoInitializers()
@@ -961,7 +961,7 @@ parseUnit(abstract)
                   parseFormalParameters(k, MemberKind.NonStaticMethod)
                     parseFormalParametersRest((, MemberKind.NonStaticMethod)
                       listener: beginFormalParameters((, MemberKind.NonStaticMethod)
-                      parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                      parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(()
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -972,8 +972,8 @@ parseUnit(abstract)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(x, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue(,)
-                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
-                      parseFormalParameter(,, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
+                      parseFormalParameter(,, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(,)
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -984,7 +984,7 @@ parseUnit(abstract)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(y, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue())
-                        listener: endFormalParameter(null, null, null, y, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, y, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                       listener: endFormalParameters(2, (, ), MemberKind.NonStaticMethod)
                 parseInitializersOpt())
                   listener: handleNoInitializers()
@@ -1065,7 +1065,7 @@ parseUnit(abstract)
                   parseFormalParameters(l, MemberKind.NonStaticMethod)
                     parseFormalParametersRest((, MemberKind.NonStaticMethod)
                       listener: beginFormalParameters((, MemberKind.NonStaticMethod)
-                      parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                      parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(()
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -1076,8 +1076,8 @@ parseUnit(abstract)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(x, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue(,)
-                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
-                      parseFormalParameter(,, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
+                      parseFormalParameter(,, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(,)
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -1088,7 +1088,7 @@ parseUnit(abstract)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(y, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue())
-                        listener: endFormalParameter(null, null, null, y, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, y, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                       listener: endFormalParameters(2, (, ), MemberKind.NonStaticMethod)
                 parseInitializersOpt())
                   listener: handleNoInitializers()
@@ -1157,7 +1157,7 @@ parseUnit(abstract)
                   parseFormalParameters(m, MemberKind.NonStaticMethod)
                     parseFormalParametersRest((, MemberKind.NonStaticMethod)
                       listener: beginFormalParameters((, MemberKind.NonStaticMethod)
-                      parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                      parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(()
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -1168,8 +1168,8 @@ parseUnit(abstract)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(x, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue(,)
-                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
-                      parseFormalParameter(,, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
+                      parseFormalParameter(,, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(,)
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -1180,7 +1180,7 @@ parseUnit(abstract)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(y, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue())
-                        listener: endFormalParameter(null, null, null, y, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, y, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                       listener: endFormalParameters(2, (, ), MemberKind.NonStaticMethod)
                 parseInitializersOpt())
                   listener: handleNoInitializers()
@@ -1296,7 +1296,7 @@ parseUnit(abstract)
                   parseFormalParameters(n, MemberKind.NonStaticMethod)
                     parseFormalParametersRest((, MemberKind.NonStaticMethod)
                       listener: beginFormalParameters((, MemberKind.NonStaticMethod)
-                      parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                      parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(()
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -1307,8 +1307,8 @@ parseUnit(abstract)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(x, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue(,)
-                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
-                      parseFormalParameter(,, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
+                      parseFormalParameter(,, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(,)
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -1319,7 +1319,7 @@ parseUnit(abstract)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(y, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue())
-                        listener: endFormalParameter(null, null, null, y, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, y, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                       listener: endFormalParameters(2, (, ), MemberKind.NonStaticMethod)
                 parseInitializersOpt())
                   listener: handleNoInitializers()
@@ -1423,7 +1423,7 @@ parseUnit(abstract)
                   parseFormalParameters(o, MemberKind.NonStaticMethod)
                     parseFormalParametersRest((, MemberKind.NonStaticMethod)
                       listener: beginFormalParameters((, MemberKind.NonStaticMethod)
-                      parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                      parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(()
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -1434,8 +1434,8 @@ parseUnit(abstract)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(x, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue(,)
-                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
-                      parseFormalParameter(,, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
+                      parseFormalParameter(,, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(,)
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -1446,7 +1446,7 @@ parseUnit(abstract)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(y, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue())
-                        listener: endFormalParameter(null, null, null, y, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, y, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                       listener: endFormalParameters(2, (, ), MemberKind.NonStaticMethod)
                 parseInitializersOpt())
                   listener: handleNoInitializers()
@@ -1539,7 +1539,7 @@ parseUnit(abstract)
                   parseFormalParameters(p, MemberKind.NonStaticMethod)
                     parseFormalParametersRest((, MemberKind.NonStaticMethod)
                       listener: beginFormalParameters((, MemberKind.NonStaticMethod)
-                      parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                      parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(()
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -1550,8 +1550,8 @@ parseUnit(abstract)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(x, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue(,)
-                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
-                      parseFormalParameter(,, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
+                      parseFormalParameter(,, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(,)
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -1562,7 +1562,7 @@ parseUnit(abstract)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(y, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue())
-                        listener: endFormalParameter(null, null, null, y, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, y, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                       listener: endFormalParameters(2, (, ), MemberKind.NonStaticMethod)
                 parseInitializersOpt())
                   listener: handleNoInitializers()
@@ -1638,7 +1638,7 @@ parseUnit(abstract)
                   parseFormalParameters(q, MemberKind.NonStaticMethod)
                     parseFormalParametersRest((, MemberKind.NonStaticMethod)
                       listener: beginFormalParameters((, MemberKind.NonStaticMethod)
-                      parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                      parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(()
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -1649,8 +1649,8 @@ parseUnit(abstract)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(x, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue(,)
-                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
-                      parseFormalParameter(,, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
+                      parseFormalParameter(,, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(,)
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -1661,7 +1661,7 @@ parseUnit(abstract)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(y, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue())
-                        listener: endFormalParameter(null, null, null, y, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, y, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                       listener: endFormalParameters(2, (, ), MemberKind.NonStaticMethod)
                 parseInitializersOpt())
                   listener: handleNoInitializers()
@@ -1761,7 +1761,7 @@ parseUnit(abstract)
                   parseFormalParameters(r, MemberKind.NonStaticMethod)
                     parseFormalParametersRest((, MemberKind.NonStaticMethod)
                       listener: beginFormalParameters((, MemberKind.NonStaticMethod)
-                      parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                      parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(()
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -1772,8 +1772,8 @@ parseUnit(abstract)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(x, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue(,)
-                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
-                      parseFormalParameter(,, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
+                      parseFormalParameter(,, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(,)
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -1784,7 +1784,7 @@ parseUnit(abstract)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(y, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue())
-                        listener: endFormalParameter(null, null, null, y, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, y, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                       listener: endFormalParameters(2, (, ), MemberKind.NonStaticMethod)
                 parseInitializersOpt())
                   listener: handleNoInitializers()
@@ -1866,7 +1866,7 @@ parseUnit(abstract)
                   parseFormalParameters(s, MemberKind.NonStaticMethod)
                     parseFormalParametersRest((, MemberKind.NonStaticMethod)
                       listener: beginFormalParameters((, MemberKind.NonStaticMethod)
-                      parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                      parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(()
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -1877,8 +1877,8 @@ parseUnit(abstract)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(x, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue(,)
-                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
-                      parseFormalParameter(,, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
+                      parseFormalParameter(,, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(,)
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -1889,7 +1889,7 @@ parseUnit(abstract)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(y, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue())
-                        listener: endFormalParameter(null, null, null, y, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, y, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                       listener: endFormalParameters(2, (, ), MemberKind.NonStaticMethod)
                 parseInitializersOpt())
                   listener: handleNoInitializers()
@@ -2104,7 +2104,7 @@ parseUnit(abstract)
                   parseFormalParameters(Key, MemberKind.NonStaticMethod)
                     parseFormalParametersRest((, MemberKind.NonStaticMethod)
                       listener: beginFormalParameters((, MemberKind.NonStaticMethod)
-                      parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                      parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(()
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -2115,8 +2115,8 @@ parseUnit(abstract)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(x, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue(,)
-                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
-                      parseFormalParameter(,, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
+                      parseFormalParameter(,, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(,)
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -2127,7 +2127,7 @@ parseUnit(abstract)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(y, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue())
-                        listener: endFormalParameter(null, null, null, y, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, y, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                       listener: endFormalParameters(2, (, ), MemberKind.NonStaticMethod)
                 parseInitializersOpt())
                   parseInitializers(:)
@@ -2349,7 +2349,7 @@ parseUnit(abstract)
                   parseFormalParameters(Key, MemberKind.NonStaticMethod)
                     parseFormalParametersRest((, MemberKind.NonStaticMethod)
                       listener: beginFormalParameters((, MemberKind.NonStaticMethod)
-                      parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                      parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(()
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -2360,8 +2360,8 @@ parseUnit(abstract)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(x, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue(,)
-                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
-                      parseFormalParameter(,, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
+                      parseFormalParameter(,, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(,)
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -2372,7 +2372,7 @@ parseUnit(abstract)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(y, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue())
-                        listener: endFormalParameter(null, null, null, y, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, y, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                       listener: endFormalParameters(2, (, ), MemberKind.NonStaticMethod)
                 parseInitializersOpt())
                   parseInitializers(:)
@@ -2558,7 +2558,7 @@ parseUnit(abstract)
                   parseFormalParameters(not_currently_working, MemberKind.NonStaticMethod)
                     parseFormalParametersRest((, MemberKind.NonStaticMethod)
                       listener: beginFormalParameters((, MemberKind.NonStaticMethod)
-                      parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                      parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(()
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -2569,8 +2569,8 @@ parseUnit(abstract)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(x, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue(,)
-                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
-                      parseFormalParameter(,, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
+                      parseFormalParameter(,, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(,)
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -2581,7 +2581,7 @@ parseUnit(abstract)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(y, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue())
-                        listener: endFormalParameter(null, null, null, y, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, y, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                       listener: endFormalParameters(2, (, ), MemberKind.NonStaticMethod)
                 parseInitializersOpt())
                   listener: handleNoInitializers()

pkg/front_end/parser_testcases/error_recovery/issue_26810_and.dart.expect

@@ -387,7 +387,7 @@ beginCompilationUnit(abstract)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue(,)
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
               beginMetadataStar(int)
               endMetadataStar(0)
               beginFormalParameter(int, MemberKind.NonStaticMethod, null, null, null)
@@ -396,7 +396,7 @@ beginCompilationUnit(abstract)
                 handleType(int, null)
                 handleIdentifier(y, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, y, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, y, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(2, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -432,7 +432,7 @@ beginCompilationUnit(abstract)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue(,)
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
               beginMetadataStar(int)
               endMetadataStar(0)
               beginFormalParameter(int, MemberKind.NonStaticMethod, null, null, null)
@@ -441,7 +441,7 @@ beginCompilationUnit(abstract)
                 handleType(int, null)
                 handleIdentifier(y, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, y, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, y, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(2, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -476,7 +476,7 @@ beginCompilationUnit(abstract)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue(,)
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
               beginMetadataStar(int)
               endMetadataStar(0)
               beginFormalParameter(int, MemberKind.NonStaticMethod, null, null, null)
@@ -485,7 +485,7 @@ beginCompilationUnit(abstract)
                 handleType(int, null)
                 handleIdentifier(y, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, y, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, y, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(2, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -524,7 +524,7 @@ beginCompilationUnit(abstract)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue(,)
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
               beginMetadataStar(int)
               endMetadataStar(0)
               beginFormalParameter(int, MemberKind.NonStaticMethod, null, null, null)
@@ -533,7 +533,7 @@ beginCompilationUnit(abstract)
                 handleType(int, null)
                 handleIdentifier(y, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, y, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, y, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(2, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -571,7 +571,7 @@ beginCompilationUnit(abstract)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue(,)
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
               beginMetadataStar(int)
               endMetadataStar(0)
               beginFormalParameter(int, MemberKind.NonStaticMethod, null, null, null)
@@ -580,7 +580,7 @@ beginCompilationUnit(abstract)
                 handleType(int, null)
                 handleIdentifier(y, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, y, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, y, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(2, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -635,7 +635,7 @@ beginCompilationUnit(abstract)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue(,)
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
               beginMetadataStar(int)
               endMetadataStar(0)
               beginFormalParameter(int, MemberKind.NonStaticMethod, null, null, null)
@@ -644,7 +644,7 @@ beginCompilationUnit(abstract)
                 handleType(int, null)
                 handleIdentifier(y, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, y, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, y, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(2, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -698,7 +698,7 @@ beginCompilationUnit(abstract)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue(,)
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
               beginMetadataStar(int)
               endMetadataStar(0)
               beginFormalParameter(int, MemberKind.NonStaticMethod, null, null, null)
@@ -707,7 +707,7 @@ beginCompilationUnit(abstract)
                 handleType(int, null)
                 handleIdentifier(y, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, y, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, y, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(2, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -749,7 +749,7 @@ beginCompilationUnit(abstract)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue(,)
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
               beginMetadataStar(int)
               endMetadataStar(0)
               beginFormalParameter(int, MemberKind.NonStaticMethod, null, null, null)
@@ -758,7 +758,7 @@ beginCompilationUnit(abstract)
                 handleType(int, null)
                 handleIdentifier(y, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, y, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, y, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(2, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -799,7 +799,7 @@ beginCompilationUnit(abstract)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue(,)
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
               beginMetadataStar(int)
               endMetadataStar(0)
               beginFormalParameter(int, MemberKind.NonStaticMethod, null, null, null)
@@ -808,7 +808,7 @@ beginCompilationUnit(abstract)
                 handleType(int, null)
                 handleIdentifier(y, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, y, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, y, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(2, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -853,7 +853,7 @@ beginCompilationUnit(abstract)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue(,)
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
               beginMetadataStar(int)
               endMetadataStar(0)
               beginFormalParameter(int, MemberKind.NonStaticMethod, null, null, null)
@@ -862,7 +862,7 @@ beginCompilationUnit(abstract)
                 handleType(int, null)
                 handleIdentifier(y, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, y, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, y, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(2, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -904,7 +904,7 @@ beginCompilationUnit(abstract)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue(,)
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
               beginMetadataStar(int)
               endMetadataStar(0)
               beginFormalParameter(int, MemberKind.NonStaticMethod, null, null, null)
@@ -913,7 +913,7 @@ beginCompilationUnit(abstract)
                 handleType(int, null)
                 handleIdentifier(y, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, y, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, y, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(2, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -991,7 +991,7 @@ beginCompilationUnit(abstract)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue(,)
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
               beginMetadataStar(int)
               endMetadataStar(0)
               beginFormalParameter(int, MemberKind.NonStaticMethod, null, null, null)
@@ -1000,7 +1000,7 @@ beginCompilationUnit(abstract)
                 handleType(int, null)
                 handleIdentifier(y, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, y, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, y, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(2, (, ), MemberKind.NonStaticMethod)
             beginInitializers(:)
               beginInitializer(foo)
@@ -1082,7 +1082,7 @@ beginCompilationUnit(abstract)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue(,)
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
               beginMetadataStar(int)
               endMetadataStar(0)
               beginFormalParameter(int, MemberKind.NonStaticMethod, null, null, null)
@@ -1091,7 +1091,7 @@ beginCompilationUnit(abstract)
                 handleType(int, null)
                 handleIdentifier(y, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, y, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, y, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(2, (, ), MemberKind.NonStaticMethod)
             beginInitializers(:)
               beginInitializer(foo)
@@ -1170,7 +1170,7 @@ beginCompilationUnit(abstract)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue(,)
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
               beginMetadataStar(int)
               endMetadataStar(0)
               beginFormalParameter(int, MemberKind.NonStaticMethod, null, null, null)
@@ -1179,7 +1179,7 @@ beginCompilationUnit(abstract)
                 handleType(int, null)
                 handleIdentifier(y, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, y, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, y, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(2, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)

pkg/front_end/parser_testcases/error_recovery/issue_26810_and.dart.intertwined.expect

@@ -781,7 +781,7 @@ parseUnit(abstract)
                   parseFormalParameters(i, MemberKind.NonStaticMethod)
                     parseFormalParametersRest((, MemberKind.NonStaticMethod)
                       listener: beginFormalParameters((, MemberKind.NonStaticMethod)
-                      parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                      parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(()
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -792,8 +792,8 @@ parseUnit(abstract)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(x, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue(,)
-                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
-                      parseFormalParameter(,, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
+                      parseFormalParameter(,, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(,)
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -804,7 +804,7 @@ parseUnit(abstract)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(y, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue())
-                        listener: endFormalParameter(null, null, null, y, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, y, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                       listener: endFormalParameters(2, (, ), MemberKind.NonStaticMethod)
                 parseInitializersOpt())
                   listener: handleNoInitializers()
@@ -878,7 +878,7 @@ parseUnit(abstract)
                   parseFormalParameters(j, MemberKind.NonStaticMethod)
                     parseFormalParametersRest((, MemberKind.NonStaticMethod)
                       listener: beginFormalParameters((, MemberKind.NonStaticMethod)
-                      parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                      parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(()
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -889,8 +889,8 @@ parseUnit(abstract)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(x, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue(,)
-                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
-                      parseFormalParameter(,, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
+                      parseFormalParameter(,, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(,)
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -901,7 +901,7 @@ parseUnit(abstract)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(y, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue())
-                        listener: endFormalParameter(null, null, null, y, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, y, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                       listener: endFormalParameters(2, (, ), MemberKind.NonStaticMethod)
                 parseInitializersOpt())
                   listener: handleNoInitializers()
@@ -963,7 +963,7 @@ parseUnit(abstract)
                   parseFormalParameters(k, MemberKind.NonStaticMethod)
                     parseFormalParametersRest((, MemberKind.NonStaticMethod)
                       listener: beginFormalParameters((, MemberKind.NonStaticMethod)
-                      parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                      parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(()
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -974,8 +974,8 @@ parseUnit(abstract)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(x, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue(,)
-                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
-                      parseFormalParameter(,, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
+                      parseFormalParameter(,, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(,)
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -986,7 +986,7 @@ parseUnit(abstract)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(y, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue())
-                        listener: endFormalParameter(null, null, null, y, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, y, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                       listener: endFormalParameters(2, (, ), MemberKind.NonStaticMethod)
                 parseInitializersOpt())
                   listener: handleNoInitializers()
@@ -1067,7 +1067,7 @@ parseUnit(abstract)
                   parseFormalParameters(l, MemberKind.NonStaticMethod)
                     parseFormalParametersRest((, MemberKind.NonStaticMethod)
                       listener: beginFormalParameters((, MemberKind.NonStaticMethod)
-                      parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                      parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(()
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -1078,8 +1078,8 @@ parseUnit(abstract)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(x, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue(,)
-                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
-                      parseFormalParameter(,, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
+                      parseFormalParameter(,, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(,)
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -1090,7 +1090,7 @@ parseUnit(abstract)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(y, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue())
-                        listener: endFormalParameter(null, null, null, y, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, y, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                       listener: endFormalParameters(2, (, ), MemberKind.NonStaticMethod)
                 parseInitializersOpt())
                   listener: handleNoInitializers()
@@ -1159,7 +1159,7 @@ parseUnit(abstract)
                   parseFormalParameters(m, MemberKind.NonStaticMethod)
                     parseFormalParametersRest((, MemberKind.NonStaticMethod)
                       listener: beginFormalParameters((, MemberKind.NonStaticMethod)
-                      parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                      parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(()
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -1170,8 +1170,8 @@ parseUnit(abstract)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(x, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue(,)
-                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
-                      parseFormalParameter(,, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
+                      parseFormalParameter(,, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(,)
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -1182,7 +1182,7 @@ parseUnit(abstract)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(y, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue())
-                        listener: endFormalParameter(null, null, null, y, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, y, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                       listener: endFormalParameters(2, (, ), MemberKind.NonStaticMethod)
                 parseInitializersOpt())
                   listener: handleNoInitializers()
@@ -1298,7 +1298,7 @@ parseUnit(abstract)
                   parseFormalParameters(n, MemberKind.NonStaticMethod)
                     parseFormalParametersRest((, MemberKind.NonStaticMethod)
                       listener: beginFormalParameters((, MemberKind.NonStaticMethod)
-                      parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                      parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(()
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -1309,8 +1309,8 @@ parseUnit(abstract)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(x, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue(,)
-                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
-                      parseFormalParameter(,, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
+                      parseFormalParameter(,, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(,)
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -1321,7 +1321,7 @@ parseUnit(abstract)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(y, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue())
-                        listener: endFormalParameter(null, null, null, y, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, y, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                       listener: endFormalParameters(2, (, ), MemberKind.NonStaticMethod)
                 parseInitializersOpt())
                   listener: handleNoInitializers()
@@ -1425,7 +1425,7 @@ parseUnit(abstract)
                   parseFormalParameters(o, MemberKind.NonStaticMethod)
                     parseFormalParametersRest((, MemberKind.NonStaticMethod)
                       listener: beginFormalParameters((, MemberKind.NonStaticMethod)
-                      parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                      parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(()
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -1436,8 +1436,8 @@ parseUnit(abstract)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(x, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue(,)
-                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
-                      parseFormalParameter(,, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
+                      parseFormalParameter(,, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(,)
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -1448,7 +1448,7 @@ parseUnit(abstract)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(y, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue())
-                        listener: endFormalParameter(null, null, null, y, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, y, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                       listener: endFormalParameters(2, (, ), MemberKind.NonStaticMethod)
                 parseInitializersOpt())
                   listener: handleNoInitializers()
@@ -1542,7 +1542,7 @@ parseUnit(abstract)
                   parseFormalParameters(p, MemberKind.NonStaticMethod)
                     parseFormalParametersRest((, MemberKind.NonStaticMethod)
                       listener: beginFormalParameters((, MemberKind.NonStaticMethod)
-                      parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                      parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(()
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -1553,8 +1553,8 @@ parseUnit(abstract)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(x, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue(,)
-                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
-                      parseFormalParameter(,, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
+                      parseFormalParameter(,, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(,)
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -1565,7 +1565,7 @@ parseUnit(abstract)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(y, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue())
-                        listener: endFormalParameter(null, null, null, y, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, y, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                       listener: endFormalParameters(2, (, ), MemberKind.NonStaticMethod)
                 parseInitializersOpt())
                   listener: handleNoInitializers()
@@ -1641,7 +1641,7 @@ parseUnit(abstract)
                   parseFormalParameters(q, MemberKind.NonStaticMethod)
                     parseFormalParametersRest((, MemberKind.NonStaticMethod)
                       listener: beginFormalParameters((, MemberKind.NonStaticMethod)
-                      parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                      parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(()
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -1652,8 +1652,8 @@ parseUnit(abstract)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(x, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue(,)
-                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
-                      parseFormalParameter(,, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
+                      parseFormalParameter(,, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(,)
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -1664,7 +1664,7 @@ parseUnit(abstract)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(y, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue())
-                        listener: endFormalParameter(null, null, null, y, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, y, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                       listener: endFormalParameters(2, (, ), MemberKind.NonStaticMethod)
                 parseInitializersOpt())
                   listener: handleNoInitializers()
@@ -1765,7 +1765,7 @@ parseUnit(abstract)
                   parseFormalParameters(r, MemberKind.NonStaticMethod)
                     parseFormalParametersRest((, MemberKind.NonStaticMethod)
                       listener: beginFormalParameters((, MemberKind.NonStaticMethod)
-                      parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                      parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(()
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -1776,8 +1776,8 @@ parseUnit(abstract)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(x, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue(,)
-                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
-                      parseFormalParameter(,, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
+                      parseFormalParameter(,, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(,)
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -1788,7 +1788,7 @@ parseUnit(abstract)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(y, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue())
-                        listener: endFormalParameter(null, null, null, y, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, y, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                       listener: endFormalParameters(2, (, ), MemberKind.NonStaticMethod)
                 parseInitializersOpt())
                   listener: handleNoInitializers()
@@ -1870,7 +1870,7 @@ parseUnit(abstract)
                   parseFormalParameters(s, MemberKind.NonStaticMethod)
                     parseFormalParametersRest((, MemberKind.NonStaticMethod)
                       listener: beginFormalParameters((, MemberKind.NonStaticMethod)
-                      parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                      parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(()
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -1881,8 +1881,8 @@ parseUnit(abstract)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(x, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue(,)
-                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
-                      parseFormalParameter(,, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
+                      parseFormalParameter(,, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(,)
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -1893,7 +1893,7 @@ parseUnit(abstract)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(y, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue())
-                        listener: endFormalParameter(null, null, null, y, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, y, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                       listener: endFormalParameters(2, (, ), MemberKind.NonStaticMethod)
                 parseInitializersOpt())
                   listener: handleNoInitializers()
@@ -2108,7 +2108,7 @@ parseUnit(abstract)
                   parseFormalParameters(Key, MemberKind.NonStaticMethod)
                     parseFormalParametersRest((, MemberKind.NonStaticMethod)
                       listener: beginFormalParameters((, MemberKind.NonStaticMethod)
-                      parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                      parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(()
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -2119,8 +2119,8 @@ parseUnit(abstract)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(x, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue(,)
-                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
-                      parseFormalParameter(,, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
+                      parseFormalParameter(,, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(,)
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -2131,7 +2131,7 @@ parseUnit(abstract)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(y, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue())
-                        listener: endFormalParameter(null, null, null, y, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, y, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                       listener: endFormalParameters(2, (, ), MemberKind.NonStaticMethod)
                 parseInitializersOpt())
                   parseInitializers(:)
@@ -2353,7 +2353,7 @@ parseUnit(abstract)
                   parseFormalParameters(Key, MemberKind.NonStaticMethod)
                     parseFormalParametersRest((, MemberKind.NonStaticMethod)
                       listener: beginFormalParameters((, MemberKind.NonStaticMethod)
-                      parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                      parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(()
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -2364,8 +2364,8 @@ parseUnit(abstract)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(x, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue(,)
-                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
-                      parseFormalParameter(,, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
+                      parseFormalParameter(,, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(,)
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -2376,7 +2376,7 @@ parseUnit(abstract)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(y, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue())
-                        listener: endFormalParameter(null, null, null, y, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, y, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                       listener: endFormalParameters(2, (, ), MemberKind.NonStaticMethod)
                 parseInitializersOpt())
                   parseInitializers(:)
@@ -2562,7 +2562,7 @@ parseUnit(abstract)
                   parseFormalParameters(not_currently_working, MemberKind.NonStaticMethod)
                     parseFormalParametersRest((, MemberKind.NonStaticMethod)
                       listener: beginFormalParameters((, MemberKind.NonStaticMethod)
-                      parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                      parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(()
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -2573,8 +2573,8 @@ parseUnit(abstract)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(x, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue(,)
-                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
-                      parseFormalParameter(,, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
+                      parseFormalParameter(,, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(,)
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -2585,7 +2585,7 @@ parseUnit(abstract)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(y, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue())
-                        listener: endFormalParameter(null, null, null, y, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, y, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                       listener: endFormalParameters(2, (, ), MemberKind.NonStaticMethod)
                 parseInitializersOpt())
                   listener: handleNoInitializers()

pkg/front_end/parser_testcases/error_recovery/issue_26810_or.dart.expect

@@ -387,7 +387,7 @@ beginCompilationUnit(abstract)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue(,)
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
               beginMetadataStar(int)
               endMetadataStar(0)
               beginFormalParameter(int, MemberKind.NonStaticMethod, null, null, null)
@@ -396,7 +396,7 @@ beginCompilationUnit(abstract)
                 handleType(int, null)
                 handleIdentifier(y, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, y, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, y, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(2, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -432,7 +432,7 @@ beginCompilationUnit(abstract)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue(,)
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
               beginMetadataStar(int)
               endMetadataStar(0)
               beginFormalParameter(int, MemberKind.NonStaticMethod, null, null, null)
@@ -441,7 +441,7 @@ beginCompilationUnit(abstract)
                 handleType(int, null)
                 handleIdentifier(y, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, y, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, y, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(2, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -476,7 +476,7 @@ beginCompilationUnit(abstract)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue(,)
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
               beginMetadataStar(int)
               endMetadataStar(0)
               beginFormalParameter(int, MemberKind.NonStaticMethod, null, null, null)
@@ -485,7 +485,7 @@ beginCompilationUnit(abstract)
                 handleType(int, null)
                 handleIdentifier(y, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, y, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, y, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(2, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -524,7 +524,7 @@ beginCompilationUnit(abstract)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue(,)
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
               beginMetadataStar(int)
               endMetadataStar(0)
               beginFormalParameter(int, MemberKind.NonStaticMethod, null, null, null)
@@ -533,7 +533,7 @@ beginCompilationUnit(abstract)
                 handleType(int, null)
                 handleIdentifier(y, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, y, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, y, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(2, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -571,7 +571,7 @@ beginCompilationUnit(abstract)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue(,)
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
               beginMetadataStar(int)
               endMetadataStar(0)
               beginFormalParameter(int, MemberKind.NonStaticMethod, null, null, null)
@@ -580,7 +580,7 @@ beginCompilationUnit(abstract)
                 handleType(int, null)
                 handleIdentifier(y, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, y, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, y, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(2, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -635,7 +635,7 @@ beginCompilationUnit(abstract)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue(,)
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
               beginMetadataStar(int)
               endMetadataStar(0)
               beginFormalParameter(int, MemberKind.NonStaticMethod, null, null, null)
@@ -644,7 +644,7 @@ beginCompilationUnit(abstract)
                 handleType(int, null)
                 handleIdentifier(y, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, y, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, y, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(2, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -698,7 +698,7 @@ beginCompilationUnit(abstract)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue(,)
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
               beginMetadataStar(int)
               endMetadataStar(0)
               beginFormalParameter(int, MemberKind.NonStaticMethod, null, null, null)
@@ -707,7 +707,7 @@ beginCompilationUnit(abstract)
                 handleType(int, null)
                 handleIdentifier(y, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, y, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, y, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(2, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -749,7 +749,7 @@ beginCompilationUnit(abstract)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue(,)
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
               beginMetadataStar(int)
               endMetadataStar(0)
               beginFormalParameter(int, MemberKind.NonStaticMethod, null, null, null)
@@ -758,7 +758,7 @@ beginCompilationUnit(abstract)
                 handleType(int, null)
                 handleIdentifier(y, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, y, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, y, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(2, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -799,7 +799,7 @@ beginCompilationUnit(abstract)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue(,)
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
               beginMetadataStar(int)
               endMetadataStar(0)
               beginFormalParameter(int, MemberKind.NonStaticMethod, null, null, null)
@@ -808,7 +808,7 @@ beginCompilationUnit(abstract)
                 handleType(int, null)
                 handleIdentifier(y, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, y, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, y, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(2, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -853,7 +853,7 @@ beginCompilationUnit(abstract)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue(,)
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
               beginMetadataStar(int)
               endMetadataStar(0)
               beginFormalParameter(int, MemberKind.NonStaticMethod, null, null, null)
@@ -862,7 +862,7 @@ beginCompilationUnit(abstract)
                 handleType(int, null)
                 handleIdentifier(y, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, y, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, y, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(2, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -904,7 +904,7 @@ beginCompilationUnit(abstract)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue(,)
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
               beginMetadataStar(int)
               endMetadataStar(0)
               beginFormalParameter(int, MemberKind.NonStaticMethod, null, null, null)
@@ -913,7 +913,7 @@ beginCompilationUnit(abstract)
                 handleType(int, null)
                 handleIdentifier(y, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, y, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, y, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(2, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -991,7 +991,7 @@ beginCompilationUnit(abstract)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue(,)
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
               beginMetadataStar(int)
               endMetadataStar(0)
               beginFormalParameter(int, MemberKind.NonStaticMethod, null, null, null)
@@ -1000,7 +1000,7 @@ beginCompilationUnit(abstract)
                 handleType(int, null)
                 handleIdentifier(y, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, y, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, y, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(2, (, ), MemberKind.NonStaticMethod)
             beginInitializers(:)
               beginInitializer(foo)
@@ -1082,7 +1082,7 @@ beginCompilationUnit(abstract)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue(,)
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
               beginMetadataStar(int)
               endMetadataStar(0)
               beginFormalParameter(int, MemberKind.NonStaticMethod, null, null, null)
@@ -1091,7 +1091,7 @@ beginCompilationUnit(abstract)
                 handleType(int, null)
                 handleIdentifier(y, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, y, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, y, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(2, (, ), MemberKind.NonStaticMethod)
             beginInitializers(:)
               beginInitializer(foo)
@@ -1170,7 +1170,7 @@ beginCompilationUnit(abstract)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue(,)
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
               beginMetadataStar(int)
               endMetadataStar(0)
               beginFormalParameter(int, MemberKind.NonStaticMethod, null, null, null)
@@ -1179,7 +1179,7 @@ beginCompilationUnit(abstract)
                 handleType(int, null)
                 handleIdentifier(y, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, y, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, y, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(2, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)

pkg/front_end/parser_testcases/error_recovery/issue_26810_or.dart.intertwined.expect

@@ -781,7 +781,7 @@ parseUnit(abstract)
                   parseFormalParameters(i, MemberKind.NonStaticMethod)
                     parseFormalParametersRest((, MemberKind.NonStaticMethod)
                       listener: beginFormalParameters((, MemberKind.NonStaticMethod)
-                      parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                      parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(()
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -792,8 +792,8 @@ parseUnit(abstract)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(x, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue(,)
-                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
-                      parseFormalParameter(,, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
+                      parseFormalParameter(,, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(,)
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -804,7 +804,7 @@ parseUnit(abstract)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(y, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue())
-                        listener: endFormalParameter(null, null, null, y, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, y, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                       listener: endFormalParameters(2, (, ), MemberKind.NonStaticMethod)
                 parseInitializersOpt())
                   listener: handleNoInitializers()
@@ -878,7 +878,7 @@ parseUnit(abstract)
                   parseFormalParameters(j, MemberKind.NonStaticMethod)
                     parseFormalParametersRest((, MemberKind.NonStaticMethod)
                       listener: beginFormalParameters((, MemberKind.NonStaticMethod)
-                      parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                      parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(()
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -889,8 +889,8 @@ parseUnit(abstract)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(x, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue(,)
-                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
-                      parseFormalParameter(,, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
+                      parseFormalParameter(,, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(,)
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -901,7 +901,7 @@ parseUnit(abstract)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(y, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue())
-                        listener: endFormalParameter(null, null, null, y, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, y, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                       listener: endFormalParameters(2, (, ), MemberKind.NonStaticMethod)
                 parseInitializersOpt())
                   listener: handleNoInitializers()
@@ -963,7 +963,7 @@ parseUnit(abstract)
                   parseFormalParameters(k, MemberKind.NonStaticMethod)
                     parseFormalParametersRest((, MemberKind.NonStaticMethod)
                       listener: beginFormalParameters((, MemberKind.NonStaticMethod)
-                      parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                      parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(()
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -974,8 +974,8 @@ parseUnit(abstract)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(x, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue(,)
-                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
-                      parseFormalParameter(,, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
+                      parseFormalParameter(,, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(,)
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -986,7 +986,7 @@ parseUnit(abstract)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(y, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue())
-                        listener: endFormalParameter(null, null, null, y, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, y, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                       listener: endFormalParameters(2, (, ), MemberKind.NonStaticMethod)
                 parseInitializersOpt())
                   listener: handleNoInitializers()
@@ -1067,7 +1067,7 @@ parseUnit(abstract)
                   parseFormalParameters(l, MemberKind.NonStaticMethod)
                     parseFormalParametersRest((, MemberKind.NonStaticMethod)
                       listener: beginFormalParameters((, MemberKind.NonStaticMethod)
-                      parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                      parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(()
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -1078,8 +1078,8 @@ parseUnit(abstract)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(x, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue(,)
-                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
-                      parseFormalParameter(,, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
+                      parseFormalParameter(,, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(,)
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -1090,7 +1090,7 @@ parseUnit(abstract)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(y, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue())
-                        listener: endFormalParameter(null, null, null, y, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, y, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                       listener: endFormalParameters(2, (, ), MemberKind.NonStaticMethod)
                 parseInitializersOpt())
                   listener: handleNoInitializers()
@@ -1159,7 +1159,7 @@ parseUnit(abstract)
                   parseFormalParameters(m, MemberKind.NonStaticMethod)
                     parseFormalParametersRest((, MemberKind.NonStaticMethod)
                       listener: beginFormalParameters((, MemberKind.NonStaticMethod)
-                      parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                      parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(()
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -1170,8 +1170,8 @@ parseUnit(abstract)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(x, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue(,)
-                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
-                      parseFormalParameter(,, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
+                      parseFormalParameter(,, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(,)
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -1182,7 +1182,7 @@ parseUnit(abstract)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(y, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue())
-                        listener: endFormalParameter(null, null, null, y, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, y, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                       listener: endFormalParameters(2, (, ), MemberKind.NonStaticMethod)
                 parseInitializersOpt())
                   listener: handleNoInitializers()
@@ -1298,7 +1298,7 @@ parseUnit(abstract)
                   parseFormalParameters(n, MemberKind.NonStaticMethod)
                     parseFormalParametersRest((, MemberKind.NonStaticMethod)
                       listener: beginFormalParameters((, MemberKind.NonStaticMethod)
-                      parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                      parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(()
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -1309,8 +1309,8 @@ parseUnit(abstract)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(x, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue(,)
-                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
-                      parseFormalParameter(,, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
+                      parseFormalParameter(,, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(,)
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -1321,7 +1321,7 @@ parseUnit(abstract)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(y, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue())
-                        listener: endFormalParameter(null, null, null, y, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, y, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                       listener: endFormalParameters(2, (, ), MemberKind.NonStaticMethod)
                 parseInitializersOpt())
                   listener: handleNoInitializers()
@@ -1425,7 +1425,7 @@ parseUnit(abstract)
                   parseFormalParameters(o, MemberKind.NonStaticMethod)
                     parseFormalParametersRest((, MemberKind.NonStaticMethod)
                       listener: beginFormalParameters((, MemberKind.NonStaticMethod)
-                      parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                      parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(()
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -1436,8 +1436,8 @@ parseUnit(abstract)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(x, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue(,)
-                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
-                      parseFormalParameter(,, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
+                      parseFormalParameter(,, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(,)
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -1448,7 +1448,7 @@ parseUnit(abstract)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(y, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue())
-                        listener: endFormalParameter(null, null, null, y, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, y, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                       listener: endFormalParameters(2, (, ), MemberKind.NonStaticMethod)
                 parseInitializersOpt())
                   listener: handleNoInitializers()
@@ -1542,7 +1542,7 @@ parseUnit(abstract)
                   parseFormalParameters(p, MemberKind.NonStaticMethod)
                     parseFormalParametersRest((, MemberKind.NonStaticMethod)
                       listener: beginFormalParameters((, MemberKind.NonStaticMethod)
-                      parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                      parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(()
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -1553,8 +1553,8 @@ parseUnit(abstract)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(x, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue(,)
-                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
-                      parseFormalParameter(,, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
+                      parseFormalParameter(,, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(,)
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -1565,7 +1565,7 @@ parseUnit(abstract)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(y, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue())
-                        listener: endFormalParameter(null, null, null, y, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, y, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                       listener: endFormalParameters(2, (, ), MemberKind.NonStaticMethod)
                 parseInitializersOpt())
                   listener: handleNoInitializers()
@@ -1641,7 +1641,7 @@ parseUnit(abstract)
                   parseFormalParameters(q, MemberKind.NonStaticMethod)
                     parseFormalParametersRest((, MemberKind.NonStaticMethod)
                       listener: beginFormalParameters((, MemberKind.NonStaticMethod)
-                      parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                      parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(()
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -1652,8 +1652,8 @@ parseUnit(abstract)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(x, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue(,)
-                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
-                      parseFormalParameter(,, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
+                      parseFormalParameter(,, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(,)
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -1664,7 +1664,7 @@ parseUnit(abstract)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(y, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue())
-                        listener: endFormalParameter(null, null, null, y, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, y, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                       listener: endFormalParameters(2, (, ), MemberKind.NonStaticMethod)
                 parseInitializersOpt())
                   listener: handleNoInitializers()
@@ -1765,7 +1765,7 @@ parseUnit(abstract)
                   parseFormalParameters(r, MemberKind.NonStaticMethod)
                     parseFormalParametersRest((, MemberKind.NonStaticMethod)
                       listener: beginFormalParameters((, MemberKind.NonStaticMethod)
-                      parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                      parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(()
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -1776,8 +1776,8 @@ parseUnit(abstract)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(x, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue(,)
-                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
-                      parseFormalParameter(,, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
+                      parseFormalParameter(,, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(,)
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -1788,7 +1788,7 @@ parseUnit(abstract)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(y, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue())
-                        listener: endFormalParameter(null, null, null, y, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, y, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                       listener: endFormalParameters(2, (, ), MemberKind.NonStaticMethod)
                 parseInitializersOpt())
                   listener: handleNoInitializers()
@@ -1870,7 +1870,7 @@ parseUnit(abstract)
                   parseFormalParameters(s, MemberKind.NonStaticMethod)
                     parseFormalParametersRest((, MemberKind.NonStaticMethod)
                       listener: beginFormalParameters((, MemberKind.NonStaticMethod)
-                      parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                      parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(()
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -1881,8 +1881,8 @@ parseUnit(abstract)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(x, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue(,)
-                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
-                      parseFormalParameter(,, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
+                      parseFormalParameter(,, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(,)
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -1893,7 +1893,7 @@ parseUnit(abstract)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(y, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue())
-                        listener: endFormalParameter(null, null, null, y, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, y, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                       listener: endFormalParameters(2, (, ), MemberKind.NonStaticMethod)
                 parseInitializersOpt())
                   listener: handleNoInitializers()
@@ -2108,7 +2108,7 @@ parseUnit(abstract)
                   parseFormalParameters(Key, MemberKind.NonStaticMethod)
                     parseFormalParametersRest((, MemberKind.NonStaticMethod)
                       listener: beginFormalParameters((, MemberKind.NonStaticMethod)
-                      parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                      parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(()
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -2119,8 +2119,8 @@ parseUnit(abstract)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(x, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue(,)
-                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
-                      parseFormalParameter(,, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
+                      parseFormalParameter(,, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(,)
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -2131,7 +2131,7 @@ parseUnit(abstract)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(y, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue())
-                        listener: endFormalParameter(null, null, null, y, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, y, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                       listener: endFormalParameters(2, (, ), MemberKind.NonStaticMethod)
                 parseInitializersOpt())
                   parseInitializers(:)
@@ -2353,7 +2353,7 @@ parseUnit(abstract)
                   parseFormalParameters(Key, MemberKind.NonStaticMethod)
                     parseFormalParametersRest((, MemberKind.NonStaticMethod)
                       listener: beginFormalParameters((, MemberKind.NonStaticMethod)
-                      parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                      parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(()
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -2364,8 +2364,8 @@ parseUnit(abstract)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(x, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue(,)
-                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
-                      parseFormalParameter(,, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
+                      parseFormalParameter(,, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(,)
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -2376,7 +2376,7 @@ parseUnit(abstract)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(y, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue())
-                        listener: endFormalParameter(null, null, null, y, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, y, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                       listener: endFormalParameters(2, (, ), MemberKind.NonStaticMethod)
                 parseInitializersOpt())
                   parseInitializers(:)
@@ -2562,7 +2562,7 @@ parseUnit(abstract)
                   parseFormalParameters(not_currently_working, MemberKind.NonStaticMethod)
                     parseFormalParametersRest((, MemberKind.NonStaticMethod)
                       listener: beginFormalParameters((, MemberKind.NonStaticMethod)
-                      parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                      parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(()
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -2573,8 +2573,8 @@ parseUnit(abstract)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(x, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue(,)
-                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
-                      parseFormalParameter(,, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
+                      parseFormalParameter(,, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(,)
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -2585,7 +2585,7 @@ parseUnit(abstract)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(y, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue())
-                        listener: endFormalParameter(null, null, null, y, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, y, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                       listener: endFormalParameters(2, (, ), MemberKind.NonStaticMethod)
                 parseInitializersOpt())
                   listener: handleNoInitializers()

pkg/front_end/parser_testcases/error_recovery/issue_42267.dart.expect

@@ -57,7 +57,7 @@ beginCompilationUnit(void)
                 handleNoType(()
                 handleIdentifier(builder, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, builder, null, null, FormalParameterKind.mandatory, MemberKind.Local)
+              endFormalParameter(null, null, null, builder, null, null, FormalParameterKind.requiredPositional, MemberKind.Local)
             endFormalParameters(1, (, ), MemberKind.Local)
             handleAsyncModifier(null, null)
             handleIdentifier(builder, expression)
@@ -111,7 +111,7 @@ beginCompilationUnit(void)
                 handleNoType(()
                 handleIdentifier(builder, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, builder, null, null, FormalParameterKind.mandatory, MemberKind.Local)
+              endFormalParameter(null, null, null, builder, null, null, FormalParameterKind.requiredPositional, MemberKind.Local)
             endFormalParameters(1, (, ), MemberKind.Local)
             handleAsyncModifier(null, null)
             handleIdentifier(builder, expression)
@@ -166,7 +166,7 @@ beginCompilationUnit(void)
                 handleNoType(()
                 handleIdentifier(builder, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, builder, null, null, FormalParameterKind.mandatory, MemberKind.Local)
+              endFormalParameter(null, null, null, builder, null, null, FormalParameterKind.requiredPositional, MemberKind.Local)
             endFormalParameters(1, (, ), MemberKind.Local)
             handleAsyncModifier(null, null)
             handleIdentifier(builder, expression)

pkg/front_end/parser_testcases/error_recovery/issue_42267.dart.intertwined.expect

@@ -106,7 +106,7 @@ parseUnit(void)
                                                 parseFormalParametersRequiredOpt((, MemberKind.Local)
                                                   parseFormalParametersRest((, MemberKind.Local)
                                                     listener: beginFormalParameters((, MemberKind.Local)
-                                                    parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.Local)
+                                                    parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.Local)
                                                       parseMetadataStar(()
                                                         listener: beginMetadataStar(builder)
                                                         listener: endMetadataStar(0)
@@ -115,7 +115,7 @@ parseUnit(void)
                                                       ensureIdentifier((, formalParameterDeclaration)
                                                         listener: handleIdentifier(builder, formalParameterDeclaration)
                                                       listener: handleFormalParameterWithoutValue())
-                                                      listener: endFormalParameter(null, null, null, builder, null, null, FormalParameterKind.mandatory, MemberKind.Local)
+                                                      listener: endFormalParameter(null, null, null, builder, null, null, FormalParameterKind.requiredPositional, MemberKind.Local)
                                                     listener: endFormalParameters(1, (, ), MemberKind.Local)
                                                 parseAsyncOptBody(), true, false)
                                                   parseAsyncModifierOpt())
@@ -257,7 +257,7 @@ parseUnit(void)
                                                 parseFormalParametersRequiredOpt((, MemberKind.Local)
                                                   parseFormalParametersRest((, MemberKind.Local)
                                                     listener: beginFormalParameters((, MemberKind.Local)
-                                                    parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.Local)
+                                                    parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.Local)
                                                       parseMetadataStar(()
                                                         listener: beginMetadataStar(builder)
                                                         listener: endMetadataStar(0)
@@ -266,7 +266,7 @@ parseUnit(void)
                                                       ensureIdentifier((, formalParameterDeclaration)
                                                         listener: handleIdentifier(builder, formalParameterDeclaration)
                                                       listener: handleFormalParameterWithoutValue())
-                                                      listener: endFormalParameter(null, null, null, builder, null, null, FormalParameterKind.mandatory, MemberKind.Local)
+                                                      listener: endFormalParameter(null, null, null, builder, null, null, FormalParameterKind.requiredPositional, MemberKind.Local)
                                                     listener: endFormalParameters(1, (, ), MemberKind.Local)
                                                 parseAsyncOptBody(), true, false)
                                                   parseAsyncModifierOpt())
@@ -410,7 +410,7 @@ parseUnit(void)
                                                 parseFormalParametersRequiredOpt((, MemberKind.Local)
                                                   parseFormalParametersRest((, MemberKind.Local)
                                                     listener: beginFormalParameters((, MemberKind.Local)
-                                                    parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.Local)
+                                                    parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.Local)
                                                       parseMetadataStar(()
                                                         listener: beginMetadataStar(builder)
                                                         listener: endMetadataStar(0)
@@ -419,7 +419,7 @@ parseUnit(void)
                                                       ensureIdentifier((, formalParameterDeclaration)
                                                         listener: handleIdentifier(builder, formalParameterDeclaration)
                                                       listener: handleFormalParameterWithoutValue())
-                                                      listener: endFormalParameter(null, null, null, builder, null, null, FormalParameterKind.mandatory, MemberKind.Local)
+                                                      listener: endFormalParameter(null, null, null, builder, null, null, FormalParameterKind.requiredPositional, MemberKind.Local)
                                                     listener: endFormalParameters(1, (, ), MemberKind.Local)
                                                 parseAsyncOptBody(), true, false)
                                                   parseAsyncModifierOpt())

pkg/front_end/parser_testcases/error_recovery/issue_44785.crash_dart.expect

@@ -33,7 +33,7 @@ beginCompilationUnit(foo)
           handleType(int, null)
           handleIdentifier(a, formalParameterDeclaration)
           handleFormalParameterWithoutValue(,)
-        endFormalParameter(null, null, null, a, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, a, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
         beginMetadataStar(int)
         endMetadataStar(0)
         beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
@@ -42,7 +42,7 @@ beginCompilationUnit(foo)
           handleType(int, null)
           handleIdentifier(b, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, b, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, b, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(2, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -93,7 +93,7 @@ beginCompilationUnit(foo)
           handleType(int, null)
           handleIdentifier(a, formalParameterDeclaration)
           handleFormalParameterWithoutValue(,)
-        endFormalParameter(null, null, null, a, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, a, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
         beginMetadataStar(int)
         endMetadataStar(0)
         beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
@@ -102,7 +102,7 @@ beginCompilationUnit(foo)
           handleType(int, null)
           handleIdentifier(b, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, b, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, b, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(2, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)

pkg/front_end/parser_testcases/error_recovery/issue_44785.crash_dart.intertwined.expect

@@ -20,7 +20,7 @@ parseUnit(foo)
           parseFormalParameters(foo, MemberKind.TopLevelMethod)
             parseFormalParametersRest((, MemberKind.TopLevelMethod)
               listener: beginFormalParameters((, MemberKind.TopLevelMethod)
-              parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+              parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
                 parseMetadataStar(()
                   listener: beginMetadataStar(int)
                   listener: endMetadataStar(0)
@@ -31,8 +31,8 @@ parseUnit(foo)
                 ensureIdentifier(int, formalParameterDeclaration)
                   listener: handleIdentifier(a, formalParameterDeclaration)
                 listener: handleFormalParameterWithoutValue(,)
-                listener: endFormalParameter(null, null, null, a, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
-              parseFormalParameter(,, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+                listener: endFormalParameter(null, null, null, a, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
+              parseFormalParameter(,, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
                 parseMetadataStar(,)
                   listener: beginMetadataStar(int)
                   listener: endMetadataStar(0)
@@ -43,7 +43,7 @@ parseUnit(foo)
                 ensureIdentifier(int, formalParameterDeclaration)
                   listener: handleIdentifier(b, formalParameterDeclaration)
                 listener: handleFormalParameterWithoutValue())
-                listener: endFormalParameter(null, null, null, b, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+                listener: endFormalParameter(null, null, null, b, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
               listener: endFormalParameters(2, (, ), MemberKind.TopLevelMethod)
         parseAsyncModifierOpt())
           listener: handleAsyncModifier(null, null)
@@ -175,7 +175,7 @@ parseUnit(foo)
           parseFormalParameters(bar, MemberKind.TopLevelMethod)
             parseFormalParametersRest((, MemberKind.TopLevelMethod)
               listener: beginFormalParameters((, MemberKind.TopLevelMethod)
-              parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+              parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
                 parseMetadataStar(()
                   listener: beginMetadataStar(int)
                   listener: endMetadataStar(0)
@@ -186,8 +186,8 @@ parseUnit(foo)
                 ensureIdentifier(int, formalParameterDeclaration)
                   listener: handleIdentifier(a, formalParameterDeclaration)
                 listener: handleFormalParameterWithoutValue(,)
-                listener: endFormalParameter(null, null, null, a, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
-              parseFormalParameter(,, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+                listener: endFormalParameter(null, null, null, a, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
+              parseFormalParameter(,, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
                 parseMetadataStar(,)
                   listener: beginMetadataStar(int)
                   listener: endMetadataStar(0)
@@ -198,7 +198,7 @@ parseUnit(foo)
                 ensureIdentifier(int, formalParameterDeclaration)
                   listener: handleIdentifier(b, formalParameterDeclaration)
                 listener: handleFormalParameterWithoutValue())
-                listener: endFormalParameter(null, null, null, b, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+                listener: endFormalParameter(null, null, null, b, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
               listener: endFormalParameters(2, (, ), MemberKind.TopLevelMethod)
         parseAsyncModifierOpt())
           listener: handleAsyncModifier(null, null)

pkg/front_end/parser_testcases/error_recovery/issue_44785_prime_1.crash_dart.expect

@@ -41,7 +41,7 @@ beginCompilationUnit(foo)
           handleType(int, null)
           handleIdentifier(a, formalParameterDeclaration)
           handleFormalParameterWithoutValue(,)
-        endFormalParameter(null, null, null, a, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, a, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
         beginMetadataStar(int)
         endMetadataStar(0)
         beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
@@ -50,7 +50,7 @@ beginCompilationUnit(foo)
           handleType(int, null)
           handleIdentifier(b, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, b, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, b, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(2, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -100,7 +100,7 @@ beginCompilationUnit(foo)
           handleType(int, null)
           handleIdentifier(a, formalParameterDeclaration)
           handleFormalParameterWithoutValue(,)
-        endFormalParameter(null, null, null, a, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, a, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
         beginMetadataStar(int)
         endMetadataStar(0)
         beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
@@ -109,7 +109,7 @@ beginCompilationUnit(foo)
           handleType(int, null)
           handleIdentifier(b, formalParameterDeclaration)
           handleFormalParameterWithoutValue(,)
-        endFormalParameter(null, null, null, b, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, b, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
         beginMetadataStar(int)
         endMetadataStar(0)
         beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
@@ -118,7 +118,7 @@ beginCompilationUnit(foo)
           handleType(int, null)
           handleIdentifier(c, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, c, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, c, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(3, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -178,7 +178,7 @@ beginCompilationUnit(foo)
           handleType(int, null)
           handleIdentifier(a, formalParameterDeclaration)
           handleFormalParameterWithoutValue(,)
-        endFormalParameter(null, null, null, a, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, a, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
         beginMetadataStar(int)
         endMetadataStar(0)
         beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
@@ -187,7 +187,7 @@ beginCompilationUnit(foo)
           handleType(int, null)
           handleIdentifier(b, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, b, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, b, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(2, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -237,7 +237,7 @@ beginCompilationUnit(foo)
           handleType(int, null)
           handleIdentifier(a, formalParameterDeclaration)
           handleFormalParameterWithoutValue(,)
-        endFormalParameter(null, null, null, a, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, a, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
         beginMetadataStar(int)
         endMetadataStar(0)
         beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
@@ -246,7 +246,7 @@ beginCompilationUnit(foo)
           handleType(int, null)
           handleIdentifier(b, formalParameterDeclaration)
           handleFormalParameterWithoutValue(,)
-        endFormalParameter(null, null, null, b, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, b, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
         beginMetadataStar(int)
         endMetadataStar(0)
         beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
@@ -255,7 +255,7 @@ beginCompilationUnit(foo)
           handleType(int, null)
           handleIdentifier(c, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, c, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, c, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(3, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)

pkg/front_end/parser_testcases/error_recovery/issue_44785_prime_1.crash_dart.intertwined.expect

@@ -20,7 +20,7 @@ parseUnit(foo)
           parseFormalParameters(foo, MemberKind.TopLevelMethod)
             parseFormalParametersRest((, MemberKind.TopLevelMethod)
               listener: beginFormalParameters((, MemberKind.TopLevelMethod)
-              parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+              parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
                 parseMetadataStar(()
                   listener: beginMetadataStar(int)
                   listener: endMetadataStar(0)
@@ -31,8 +31,8 @@ parseUnit(foo)
                 ensureIdentifier(int, formalParameterDeclaration)
                   listener: handleIdentifier(a, formalParameterDeclaration)
                 listener: handleFormalParameterWithoutValue(,)
-                listener: endFormalParameter(null, null, null, a, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
-              parseFormalParameter(,, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+                listener: endFormalParameter(null, null, null, a, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
+              parseFormalParameter(,, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
                 parseMetadataStar(,)
                   listener: beginMetadataStar(int)
                   listener: endMetadataStar(0)
@@ -43,7 +43,7 @@ parseUnit(foo)
                 ensureIdentifier(int, formalParameterDeclaration)
                   listener: handleIdentifier(b, formalParameterDeclaration)
                 listener: handleFormalParameterWithoutValue())
-                listener: endFormalParameter(null, null, null, b, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+                listener: endFormalParameter(null, null, null, b, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
               listener: endFormalParameters(2, (, ), MemberKind.TopLevelMethod)
         parseAsyncModifierOpt())
           listener: handleAsyncModifier(null, null)
@@ -172,7 +172,7 @@ parseUnit(foo)
           parseFormalParameters(foo2, MemberKind.TopLevelMethod)
             parseFormalParametersRest((, MemberKind.TopLevelMethod)
               listener: beginFormalParameters((, MemberKind.TopLevelMethod)
-              parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+              parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
                 parseMetadataStar(()
                   listener: beginMetadataStar(int)
                   listener: endMetadataStar(0)
@@ -183,8 +183,8 @@ parseUnit(foo)
                 ensureIdentifier(int, formalParameterDeclaration)
                   listener: handleIdentifier(a, formalParameterDeclaration)
                 listener: handleFormalParameterWithoutValue(,)
-                listener: endFormalParameter(null, null, null, a, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
-              parseFormalParameter(,, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+                listener: endFormalParameter(null, null, null, a, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
+              parseFormalParameter(,, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
                 parseMetadataStar(,)
                   listener: beginMetadataStar(int)
                   listener: endMetadataStar(0)
@@ -195,8 +195,8 @@ parseUnit(foo)
                 ensureIdentifier(int, formalParameterDeclaration)
                   listener: handleIdentifier(b, formalParameterDeclaration)
                 listener: handleFormalParameterWithoutValue(,)
-                listener: endFormalParameter(null, null, null, b, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
-              parseFormalParameter(,, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+                listener: endFormalParameter(null, null, null, b, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
+              parseFormalParameter(,, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
                 parseMetadataStar(,)
                   listener: beginMetadataStar(int)
                   listener: endMetadataStar(0)
@@ -207,7 +207,7 @@ parseUnit(foo)
                 ensureIdentifier(int, formalParameterDeclaration)
                   listener: handleIdentifier(c, formalParameterDeclaration)
                 listener: handleFormalParameterWithoutValue())
-                listener: endFormalParameter(null, null, null, c, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+                listener: endFormalParameter(null, null, null, c, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
               listener: endFormalParameters(3, (, ), MemberKind.TopLevelMethod)
         parseAsyncModifierOpt())
           listener: handleAsyncModifier(null, null)
@@ -384,7 +384,7 @@ parseUnit(foo)
           parseFormalParameters(bar, MemberKind.TopLevelMethod)
             parseFormalParametersRest((, MemberKind.TopLevelMethod)
               listener: beginFormalParameters((, MemberKind.TopLevelMethod)
-              parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+              parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
                 parseMetadataStar(()
                   listener: beginMetadataStar(int)
                   listener: endMetadataStar(0)
@@ -395,8 +395,8 @@ parseUnit(foo)
                 ensureIdentifier(int, formalParameterDeclaration)
                   listener: handleIdentifier(a, formalParameterDeclaration)
                 listener: handleFormalParameterWithoutValue(,)
-                listener: endFormalParameter(null, null, null, a, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
-              parseFormalParameter(,, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+                listener: endFormalParameter(null, null, null, a, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
+              parseFormalParameter(,, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
                 parseMetadataStar(,)
                   listener: beginMetadataStar(int)
                   listener: endMetadataStar(0)
@@ -407,7 +407,7 @@ parseUnit(foo)
                 ensureIdentifier(int, formalParameterDeclaration)
                   listener: handleIdentifier(b, formalParameterDeclaration)
                 listener: handleFormalParameterWithoutValue())
-                listener: endFormalParameter(null, null, null, b, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+                listener: endFormalParameter(null, null, null, b, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
               listener: endFormalParameters(2, (, ), MemberKind.TopLevelMethod)
         parseAsyncModifierOpt())
           listener: handleAsyncModifier(null, null)
@@ -536,7 +536,7 @@ parseUnit(foo)
           parseFormalParameters(bar2, MemberKind.TopLevelMethod)
             parseFormalParametersRest((, MemberKind.TopLevelMethod)
               listener: beginFormalParameters((, MemberKind.TopLevelMethod)
-              parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+              parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
                 parseMetadataStar(()
                   listener: beginMetadataStar(int)
                   listener: endMetadataStar(0)
@@ -547,8 +547,8 @@ parseUnit(foo)
                 ensureIdentifier(int, formalParameterDeclaration)
                   listener: handleIdentifier(a, formalParameterDeclaration)
                 listener: handleFormalParameterWithoutValue(,)
-                listener: endFormalParameter(null, null, null, a, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
-              parseFormalParameter(,, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+                listener: endFormalParameter(null, null, null, a, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
+              parseFormalParameter(,, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
                 parseMetadataStar(,)
                   listener: beginMetadataStar(int)
                   listener: endMetadataStar(0)
@@ -559,8 +559,8 @@ parseUnit(foo)
                 ensureIdentifier(int, formalParameterDeclaration)
                   listener: handleIdentifier(b, formalParameterDeclaration)
                 listener: handleFormalParameterWithoutValue(,)
-                listener: endFormalParameter(null, null, null, b, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
-              parseFormalParameter(,, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+                listener: endFormalParameter(null, null, null, b, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
+              parseFormalParameter(,, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
                 parseMetadataStar(,)
                   listener: beginMetadataStar(int)
                   listener: endMetadataStar(0)
@@ -571,7 +571,7 @@ parseUnit(foo)
                 ensureIdentifier(int, formalParameterDeclaration)
                   listener: handleIdentifier(c, formalParameterDeclaration)
                 listener: handleFormalParameterWithoutValue())
-                listener: endFormalParameter(null, null, null, c, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+                listener: endFormalParameter(null, null, null, c, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
               listener: endFormalParameters(3, (, ), MemberKind.TopLevelMethod)
         parseAsyncModifierOpt())
           listener: handleAsyncModifier(null, null)

pkg/front_end/parser_testcases/error_recovery/issue_44785_prime_2.crash_dart.expect

@@ -15,7 +15,7 @@ beginCompilationUnit(foo)
           handleType(int, null)
           handleIdentifier(a, formalParameterDeclaration)
           handleFormalParameterWithoutValue(,)
-        endFormalParameter(null, null, null, a, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, a, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
         beginMetadataStar(int)
         endMetadataStar(0)
         beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
@@ -24,7 +24,7 @@ beginCompilationUnit(foo)
           handleType(int, null)
           handleIdentifier(b, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, b, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, b, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(2, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -73,7 +73,7 @@ beginCompilationUnit(foo)
           handleType(int, null)
           handleIdentifier(a, formalParameterDeclaration)
           handleFormalParameterWithoutValue(,)
-        endFormalParameter(null, null, null, a, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, a, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
         beginMetadataStar(int)
         endMetadataStar(0)
         beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
@@ -82,7 +82,7 @@ beginCompilationUnit(foo)
           handleType(int, null)
           handleIdentifier(b, formalParameterDeclaration)
           handleFormalParameterWithoutValue(,)
-        endFormalParameter(null, null, null, b, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, b, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
         beginMetadataStar(int)
         endMetadataStar(0)
         beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
@@ -91,7 +91,7 @@ beginCompilationUnit(foo)
           handleType(int, null)
           handleIdentifier(c, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, c, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, c, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(3, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -149,7 +149,7 @@ beginCompilationUnit(foo)
           handleType(int, null)
           handleIdentifier(a, formalParameterDeclaration)
           handleFormalParameterWithoutValue(,)
-        endFormalParameter(null, null, null, a, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, a, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
         beginMetadataStar(int)
         endMetadataStar(0)
         beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
@@ -158,7 +158,7 @@ beginCompilationUnit(foo)
           handleType(int, null)
           handleIdentifier(b, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, b, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, b, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(2, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -207,7 +207,7 @@ beginCompilationUnit(foo)
           handleType(int, null)
           handleIdentifier(a, formalParameterDeclaration)
           handleFormalParameterWithoutValue(,)
-        endFormalParameter(null, null, null, a, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, a, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
         beginMetadataStar(int)
         endMetadataStar(0)
         beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
@@ -216,7 +216,7 @@ beginCompilationUnit(foo)
           handleType(int, null)
           handleIdentifier(b, formalParameterDeclaration)
           handleFormalParameterWithoutValue(,)
-        endFormalParameter(null, null, null, b, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, b, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
         beginMetadataStar(int)
         endMetadataStar(0)
         beginFormalParameter(int, MemberKind.TopLevelMethod, null, null, null)
@@ -225,7 +225,7 @@ beginCompilationUnit(foo)
           handleType(int, null)
           handleIdentifier(c, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, c, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, c, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(3, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)

pkg/front_end/parser_testcases/error_recovery/issue_44785_prime_2.crash_dart.intertwined.expect

@@ -20,7 +20,7 @@ parseUnit(foo)
           parseFormalParameters(foo, MemberKind.TopLevelMethod)
             parseFormalParametersRest((, MemberKind.TopLevelMethod)
               listener: beginFormalParameters((, MemberKind.TopLevelMethod)
-              parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+              parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
                 parseMetadataStar(()
                   listener: beginMetadataStar(int)
                   listener: endMetadataStar(0)
@@ -31,8 +31,8 @@ parseUnit(foo)
                 ensureIdentifier(int, formalParameterDeclaration)
                   listener: handleIdentifier(a, formalParameterDeclaration)
                 listener: handleFormalParameterWithoutValue(,)
-                listener: endFormalParameter(null, null, null, a, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
-              parseFormalParameter(,, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+                listener: endFormalParameter(null, null, null, a, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
+              parseFormalParameter(,, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
                 parseMetadataStar(,)
                   listener: beginMetadataStar(int)
                   listener: endMetadataStar(0)
@@ -43,7 +43,7 @@ parseUnit(foo)
                 ensureIdentifier(int, formalParameterDeclaration)
                   listener: handleIdentifier(b, formalParameterDeclaration)
                 listener: handleFormalParameterWithoutValue())
-                listener: endFormalParameter(null, null, null, b, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+                listener: endFormalParameter(null, null, null, b, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
               listener: endFormalParameters(2, (, ), MemberKind.TopLevelMethod)
         parseAsyncModifierOpt())
           listener: handleAsyncModifier(null, null)
@@ -146,7 +146,7 @@ parseUnit(foo)
           parseFormalParameters(foo2, MemberKind.TopLevelMethod)
             parseFormalParametersRest((, MemberKind.TopLevelMethod)
               listener: beginFormalParameters((, MemberKind.TopLevelMethod)
-              parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+              parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
                 parseMetadataStar(()
                   listener: beginMetadataStar(int)
                   listener: endMetadataStar(0)
@@ -157,8 +157,8 @@ parseUnit(foo)
                 ensureIdentifier(int, formalParameterDeclaration)
                   listener: handleIdentifier(a, formalParameterDeclaration)
                 listener: handleFormalParameterWithoutValue(,)
-                listener: endFormalParameter(null, null, null, a, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
-              parseFormalParameter(,, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+                listener: endFormalParameter(null, null, null, a, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
+              parseFormalParameter(,, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
                 parseMetadataStar(,)
                   listener: beginMetadataStar(int)
                   listener: endMetadataStar(0)
@@ -169,8 +169,8 @@ parseUnit(foo)
                 ensureIdentifier(int, formalParameterDeclaration)
                   listener: handleIdentifier(b, formalParameterDeclaration)
                 listener: handleFormalParameterWithoutValue(,)
-                listener: endFormalParameter(null, null, null, b, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
-              parseFormalParameter(,, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+                listener: endFormalParameter(null, null, null, b, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
+              parseFormalParameter(,, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
                 parseMetadataStar(,)
                   listener: beginMetadataStar(int)
                   listener: endMetadataStar(0)
@@ -181,7 +181,7 @@ parseUnit(foo)
                 ensureIdentifier(int, formalParameterDeclaration)
                   listener: handleIdentifier(c, formalParameterDeclaration)
                 listener: handleFormalParameterWithoutValue())
-                listener: endFormalParameter(null, null, null, c, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+                listener: endFormalParameter(null, null, null, c, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
               listener: endFormalParameters(3, (, ), MemberKind.TopLevelMethod)
         parseAsyncModifierOpt())
           listener: handleAsyncModifier(null, null)
@@ -305,7 +305,7 @@ parseUnit(foo)
           parseFormalParameters(bar, MemberKind.TopLevelMethod)
             parseFormalParametersRest((, MemberKind.TopLevelMethod)
               listener: beginFormalParameters((, MemberKind.TopLevelMethod)
-              parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+              parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
                 parseMetadataStar(()
                   listener: beginMetadataStar(int)
                   listener: endMetadataStar(0)
@@ -316,8 +316,8 @@ parseUnit(foo)
                 ensureIdentifier(int, formalParameterDeclaration)
                   listener: handleIdentifier(a, formalParameterDeclaration)
                 listener: handleFormalParameterWithoutValue(,)
-                listener: endFormalParameter(null, null, null, a, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
-              parseFormalParameter(,, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+                listener: endFormalParameter(null, null, null, a, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
+              parseFormalParameter(,, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
                 parseMetadataStar(,)
                   listener: beginMetadataStar(int)
                   listener: endMetadataStar(0)
@@ -328,7 +328,7 @@ parseUnit(foo)
                 ensureIdentifier(int, formalParameterDeclaration)
                   listener: handleIdentifier(b, formalParameterDeclaration)
                 listener: handleFormalParameterWithoutValue())
-                listener: endFormalParameter(null, null, null, b, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+                listener: endFormalParameter(null, null, null, b, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
               listener: endFormalParameters(2, (, ), MemberKind.TopLevelMethod)
         parseAsyncModifierOpt())
           listener: handleAsyncModifier(null, null)
@@ -431,7 +431,7 @@ parseUnit(foo)
           parseFormalParameters(bar2, MemberKind.TopLevelMethod)
             parseFormalParametersRest((, MemberKind.TopLevelMethod)
               listener: beginFormalParameters((, MemberKind.TopLevelMethod)
-              parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+              parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
                 parseMetadataStar(()
                   listener: beginMetadataStar(int)
                   listener: endMetadataStar(0)
@@ -442,8 +442,8 @@ parseUnit(foo)
                 ensureIdentifier(int, formalParameterDeclaration)
                   listener: handleIdentifier(a, formalParameterDeclaration)
                 listener: handleFormalParameterWithoutValue(,)
-                listener: endFormalParameter(null, null, null, a, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
-              parseFormalParameter(,, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+                listener: endFormalParameter(null, null, null, a, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
+              parseFormalParameter(,, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
                 parseMetadataStar(,)
                   listener: beginMetadataStar(int)
                   listener: endMetadataStar(0)
@@ -454,8 +454,8 @@ parseUnit(foo)
                 ensureIdentifier(int, formalParameterDeclaration)
                   listener: handleIdentifier(b, formalParameterDeclaration)
                 listener: handleFormalParameterWithoutValue(,)
-                listener: endFormalParameter(null, null, null, b, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
-              parseFormalParameter(,, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+                listener: endFormalParameter(null, null, null, b, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
+              parseFormalParameter(,, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
                 parseMetadataStar(,)
                   listener: beginMetadataStar(int)
                   listener: endMetadataStar(0)
@@ -466,7 +466,7 @@ parseUnit(foo)
                 ensureIdentifier(int, formalParameterDeclaration)
                   listener: handleIdentifier(c, formalParameterDeclaration)
                 listener: handleFormalParameterWithoutValue())
-                listener: endFormalParameter(null, null, null, c, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+                listener: endFormalParameter(null, null, null, c, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
               listener: endFormalParameters(3, (, ), MemberKind.TopLevelMethod)
         parseAsyncModifierOpt())
           listener: handleAsyncModifier(null, null)

pkg/front_end/parser_testcases/error_recovery/issue_45327_prime_1.crash_dart.expect

@@ -45,7 +45,7 @@ beginCompilationUnit(class)
                 handleType(Object, ?)
                 handleIdentifier(key, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, key, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, key, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)

pkg/front_end/parser_testcases/error_recovery/issue_45327_prime_1.crash_dart.intertwined.expect

@@ -52,7 +52,7 @@ parseUnit(UnmatchedToken(())
                   parseFormalParameters(foo, MemberKind.NonStaticMethod)
                     parseFormalParametersRest((, MemberKind.NonStaticMethod)
                       listener: beginFormalParameters((, MemberKind.NonStaticMethod)
-                      parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                      parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(()
                           listener: beginMetadataStar(Object)
                           listener: endMetadataStar(0)
@@ -63,7 +63,7 @@ parseUnit(UnmatchedToken(())
                         ensureIdentifier(?, formalParameterDeclaration)
                           listener: handleIdentifier(key, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue())
-                        listener: endFormalParameter(null, null, null, key, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, key, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                       listener: endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
                 parseInitializersOpt())
                   listener: handleNoInitializers()

pkg/front_end/parser_testcases/error_recovery/issue_46505_prime_6.crash_dart.expect

@@ -47,7 +47,7 @@ beginCompilationUnit(class)
                 handleType(T, null)
                 handleIdentifier(foo, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, foo, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, foo, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -86,7 +86,7 @@ beginCompilationUnit(class)
                 handleType(T, null)
                 handleIdentifier(foo, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, foo, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, foo, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -118,7 +118,7 @@ beginCompilationUnit(class)
                 handleType(T, null)
                 handleIdentifier(foo, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, foo, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, foo, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)

pkg/front_end/parser_testcases/error_recovery/issue_46505_prime_6.crash_dart.intertwined.expect

@@ -60,7 +60,7 @@ parseUnit(class)
                   parseFormalParameters(>, MemberKind.NonStaticMethod)
                     parseFormalParametersRest((, MemberKind.NonStaticMethod)
                       listener: beginFormalParameters((, MemberKind.NonStaticMethod)
-                      parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                      parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(()
                           listener: beginMetadataStar(T)
                           listener: endMetadataStar(0)
@@ -71,7 +71,7 @@ parseUnit(class)
                         ensureIdentifier(T, formalParameterDeclaration)
                           listener: handleIdentifier(foo, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue())
-                        listener: endFormalParameter(null, null, null, foo, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, foo, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                       listener: endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
                 parseInitializersOpt())
                   listener: handleNoInitializers()
@@ -124,7 +124,7 @@ parseUnit(class)
                   parseFormalParameters(>, MemberKind.NonStaticMethod)
                     parseFormalParametersRest((, MemberKind.NonStaticMethod)
                       listener: beginFormalParameters((, MemberKind.NonStaticMethod)
-                      parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                      parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(()
                           listener: beginMetadataStar(T)
                           listener: endMetadataStar(0)
@@ -135,7 +135,7 @@ parseUnit(class)
                         ensureIdentifier(T, formalParameterDeclaration)
                           listener: handleIdentifier(foo, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue())
-                        listener: endFormalParameter(null, null, null, foo, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, foo, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                       listener: endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
                 parseInitializersOpt())
                   listener: handleNoInitializers()
@@ -176,7 +176,7 @@ parseUnit(class)
                   parseFormalParameters(>, MemberKind.NonStaticMethod)
                     parseFormalParametersRest((, MemberKind.NonStaticMethod)
                       listener: beginFormalParameters((, MemberKind.NonStaticMethod)
-                      parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                      parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(()
                           listener: beginMetadataStar(T)
                           listener: endMetadataStar(0)
@@ -187,7 +187,7 @@ parseUnit(class)
                         ensureIdentifier(T, formalParameterDeclaration)
                           listener: handleIdentifier(foo, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue())
-                        listener: endFormalParameter(null, null, null, foo, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, foo, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                       listener: endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
                 parseInitializersOpt())
                   listener: handleNoInitializers()

pkg/front_end/parser_testcases/error_recovery/issue_46736.dart.expect

@@ -22,7 +22,7 @@ beginCompilationUnit(void)
           handleRecoverableError(Message[ExpectedIdentifierButGotKeyword, 'default' can't be used as an identifier because it's a keyword., Try renaming this to be an identifier that isn't a keyword., {lexeme: default}], default, default)
           handleIdentifier(default, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, default, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, default, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)

pkg/front_end/parser_testcases/error_recovery/issue_46736.dart.intertwined.expect

@@ -19,7 +19,7 @@ parseUnit(void)
           parseFormalParameters(test, MemberKind.TopLevelMethod)
             parseFormalParametersRest((, MemberKind.TopLevelMethod)
               listener: beginFormalParameters((, MemberKind.TopLevelMethod)
-              parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+              parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
                 parseMetadataStar(()
                   listener: beginMetadataStar(String)
                   listener: endMetadataStar(0)
@@ -32,7 +32,7 @@ parseUnit(void)
                     listener: handleRecoverableError(Message[ExpectedIdentifierButGotKeyword, 'default' can't be used as an identifier because it's a keyword., Try renaming this to be an identifier that isn't a keyword., {lexeme: default}], default, default)
                   listener: handleIdentifier(default, formalParameterDeclaration)
                 listener: handleFormalParameterWithoutValue())
-                listener: endFormalParameter(null, null, null, default, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+                listener: endFormalParameter(null, null, null, default, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
               listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
         parseAsyncModifierOpt())
           listener: handleAsyncModifier(null, null)

pkg/front_end/parser_testcases/error_recovery/issue_46736_prime.dart.expect

@@ -15,7 +15,7 @@ beginCompilationUnit(void)
           handleType(String, null)
           handleIdentifier(defaultX, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, defaultX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, defaultX, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)

pkg/front_end/parser_testcases/error_recovery/issue_46736_prime.dart.intertwined.expect

@@ -19,7 +19,7 @@ parseUnit(void)
           parseFormalParameters(test, MemberKind.TopLevelMethod)
             parseFormalParametersRest((, MemberKind.TopLevelMethod)
               listener: beginFormalParameters((, MemberKind.TopLevelMethod)
-              parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+              parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
                 parseMetadataStar(()
                   listener: beginMetadataStar(String)
                   listener: endMetadataStar(0)
@@ -30,7 +30,7 @@ parseUnit(void)
                 ensureIdentifier(String, formalParameterDeclaration)
                   listener: handleIdentifier(defaultX, formalParameterDeclaration)
                 listener: handleFormalParameterWithoutValue())
-                listener: endFormalParameter(null, null, null, defaultX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+                listener: endFormalParameter(null, null, null, defaultX, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
               listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
         parseAsyncModifierOpt())
           listener: handleAsyncModifier(null, null)

pkg/front_end/parser_testcases/error_recovery/issue_48288.dart.expect

@@ -21,7 +21,7 @@ beginCompilationUnit(void)
           handleType(int, null)
           handleIdentifier(x, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)

pkg/front_end/parser_testcases/error_recovery/issue_48288.dart.intertwined.expect

@@ -19,7 +19,7 @@ parseUnit(void)
           parseFormalParameters(f, MemberKind.TopLevelMethod)
             parseFormalParametersRest((, MemberKind.TopLevelMethod)
               listener: beginFormalParameters((, MemberKind.TopLevelMethod)
-              parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+              parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
                 parseMetadataStar(()
                   listener: beginMetadataStar(int)
                   listener: endMetadataStar(0)
@@ -30,7 +30,7 @@ parseUnit(void)
                 ensureIdentifier(int, formalParameterDeclaration)
                   listener: handleIdentifier(x, formalParameterDeclaration)
                 listener: handleFormalParameterWithoutValue())
-                listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+                listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
               listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
         parseAsyncModifierOpt())
           listener: handleAsyncModifier(null, null)

pkg/front_end/parser_testcases/error_recovery/issue_48288_prime.dart.expect

@@ -15,7 +15,7 @@ beginCompilationUnit(void)
           handleType(int, null)
           handleIdentifier(x, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)

pkg/front_end/parser_testcases/error_recovery/issue_48288_prime.dart.intertwined.expect

@@ -19,7 +19,7 @@ parseUnit(void)
           parseFormalParameters(f, MemberKind.TopLevelMethod)
             parseFormalParametersRest((, MemberKind.TopLevelMethod)
               listener: beginFormalParameters((, MemberKind.TopLevelMethod)
-              parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+              parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
                 parseMetadataStar(()
                   listener: beginMetadataStar(int)
                   listener: endMetadataStar(0)
@@ -30,7 +30,7 @@ parseUnit(void)
                 ensureIdentifier(int, formalParameterDeclaration)
                   listener: handleIdentifier(x, formalParameterDeclaration)
                 listener: handleFormalParameterWithoutValue())
-                listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+                listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
               listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
         parseAsyncModifierOpt())
           listener: handleAsyncModifier(null, null)

pkg/front_end/parser_testcases/error_recovery/issue_48371_prime3.dart.expect

@@ -55,7 +55,7 @@ beginCompilationUnit(enum)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)

pkg/front_end/parser_testcases/error_recovery/issue_48371_prime3.dart.intertwined.expect

@@ -79,7 +79,7 @@ parseUnit(enum)
                   parseFormalParameters(foo, MemberKind.NonStaticMethod)
                     parseFormalParametersRest((, MemberKind.NonStaticMethod)
                       listener: beginFormalParameters((, MemberKind.NonStaticMethod)
-                      parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                      parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(()
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -90,7 +90,7 @@ parseUnit(enum)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(x, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue())
-                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                       listener: endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
                 parseInitializersOpt())
                   listener: handleNoInitializers()

pkg/front_end/parser_testcases/error_recovery/issue_48411.dart.expect

@@ -53,7 +53,7 @@ beginCompilationUnit(class)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -78,7 +78,7 @@ beginCompilationUnit(class)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -118,7 +118,7 @@ beginCompilationUnit(class)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             beginInitializers(:)
               beginInitializer(assert)
@@ -182,7 +182,7 @@ beginCompilationUnit(class)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             beginInitializers(:)
               beginInitializer(assert)
@@ -248,7 +248,7 @@ beginCompilationUnit(class)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             beginInitializers(:)
               beginInitializer(assert)
@@ -299,7 +299,7 @@ beginCompilationUnit(class)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -350,7 +350,7 @@ beginCompilationUnit(class)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             beginInitializers(:)
               beginInitializer(assert)
@@ -414,7 +414,7 @@ beginCompilationUnit(class)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             beginInitializers(:)
               beginInitializer(assert)
@@ -492,7 +492,7 @@ beginCompilationUnit(class)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             beginInitializers(:)
               beginInitializer(assert)

pkg/front_end/parser_testcases/error_recovery/issue_48411.dart.intertwined.expect

@@ -44,7 +44,7 @@ parseUnit(class)
                   parseFormalParameters(A, MemberKind.NonStaticMethod)
                     parseFormalParametersRest((, MemberKind.NonStaticMethod)
                       listener: beginFormalParameters((, MemberKind.NonStaticMethod)
-                      parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                      parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(()
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -55,7 +55,7 @@ parseUnit(class)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(x, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue())
-                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                       listener: endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
                 parseInitializersOpt())
                   listener: handleNoInitializers()
@@ -90,7 +90,7 @@ parseUnit(class)
                   parseFormalParameters(y, MemberKind.NonStaticMethod)
                     parseFormalParametersRest((, MemberKind.NonStaticMethod)
                       listener: beginFormalParameters((, MemberKind.NonStaticMethod)
-                      parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                      parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(()
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -101,7 +101,7 @@ parseUnit(class)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(x, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue())
-                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                       listener: endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
                 parseInitializersOpt())
                   listener: handleNoInitializers()
@@ -162,7 +162,7 @@ parseUnit(class)
                   parseFormalParameters(B, MemberKind.NonStaticMethod)
                     parseFormalParametersRest((, MemberKind.NonStaticMethod)
                       listener: beginFormalParameters((, MemberKind.NonStaticMethod)
-                      parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                      parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(()
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -173,7 +173,7 @@ parseUnit(class)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(x, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue())
-                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                       listener: endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
                 parseInitializersOpt())
                   parseInitializers(:)
@@ -295,7 +295,7 @@ parseUnit(class)
                   parseFormalParameters(B2, MemberKind.NonStaticMethod)
                     parseFormalParametersRest((, MemberKind.NonStaticMethod)
                       listener: beginFormalParameters((, MemberKind.NonStaticMethod)
-                      parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                      parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(()
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -306,7 +306,7 @@ parseUnit(class)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(x, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue())
-                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                       listener: endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
                 parseInitializersOpt())
                   parseInitializers(:)
@@ -436,7 +436,7 @@ parseUnit(class)
                   parseFormalParameters(B3, MemberKind.NonStaticMethod)
                     parseFormalParametersRest((, MemberKind.NonStaticMethod)
                       listener: beginFormalParameters((, MemberKind.NonStaticMethod)
-                      parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                      parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(()
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -447,7 +447,7 @@ parseUnit(class)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(x, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue())
-                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                       listener: endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
                 parseInitializersOpt())
                   parseInitializers(:)
@@ -550,7 +550,7 @@ parseUnit(class)
                   parseFormalParameters(y, MemberKind.NonStaticMethod)
                     parseFormalParametersRest((, MemberKind.NonStaticMethod)
                       listener: beginFormalParameters((, MemberKind.NonStaticMethod)
-                      parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                      parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(()
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -561,7 +561,7 @@ parseUnit(class)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(x, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue())
-                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                       listener: endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
                 parseInitializersOpt())
                   listener: handleNoInitializers()
@@ -639,7 +639,7 @@ parseUnit(class)
                   parseFormalParameters(C, MemberKind.NonStaticMethod)
                     parseFormalParametersRest((, MemberKind.NonStaticMethod)
                       listener: beginFormalParameters((, MemberKind.NonStaticMethod)
-                      parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                      parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(()
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -650,7 +650,7 @@ parseUnit(class)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(x, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue())
-                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                       listener: endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
                 parseInitializersOpt())
                   parseInitializers(:)
@@ -772,7 +772,7 @@ parseUnit(class)
                   parseFormalParameters(D, MemberKind.NonStaticMethod)
                     parseFormalParametersRest((, MemberKind.NonStaticMethod)
                       listener: beginFormalParameters((, MemberKind.NonStaticMethod)
-                      parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                      parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(()
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -783,7 +783,7 @@ parseUnit(class)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(x, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue())
-                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                       listener: endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
                 parseInitializersOpt())
                   parseInitializers(:)
@@ -925,7 +925,7 @@ parseUnit(class)
                   parseFormalParameters(E, MemberKind.NonStaticMethod)
                     parseFormalParametersRest((, MemberKind.NonStaticMethod)
                       listener: beginFormalParameters((, MemberKind.NonStaticMethod)
-                      parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                      parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(()
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -936,7 +936,7 @@ parseUnit(class)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(x, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue())
-                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                       listener: endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
                 parseInitializersOpt())
                   parseInitializers(:)

pkg/front_end/parser_testcases/error_recovery/issue_48411_prime.dart.expect

@@ -27,7 +27,7 @@ beginCompilationUnit(class)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -52,7 +52,7 @@ beginCompilationUnit(class)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -92,7 +92,7 @@ beginCompilationUnit(class)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             beginInitializers(:)
               beginInitializer(assert)
@@ -155,7 +155,7 @@ beginCompilationUnit(class)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             beginInitializers(:)
               beginInitializer(assert)
@@ -220,7 +220,7 @@ beginCompilationUnit(class)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             beginInitializers(:)
               beginInitializer(assert)
@@ -270,7 +270,7 @@ beginCompilationUnit(class)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -321,7 +321,7 @@ beginCompilationUnit(class)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             beginInitializers(:)
               beginInitializer(assert)
@@ -384,7 +384,7 @@ beginCompilationUnit(class)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             beginInitializers(:)
               beginInitializer(assert)
@@ -461,7 +461,7 @@ beginCompilationUnit(class)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             beginInitializers(:)
               beginInitializer(assert)

pkg/front_end/parser_testcases/error_recovery/issue_48411_prime.dart.intertwined.expect

@@ -44,7 +44,7 @@ parseUnit(class)
                   parseFormalParameters(A, MemberKind.NonStaticMethod)
                     parseFormalParametersRest((, MemberKind.NonStaticMethod)
                       listener: beginFormalParameters((, MemberKind.NonStaticMethod)
-                      parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                      parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(()
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -55,7 +55,7 @@ parseUnit(class)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(x, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue())
-                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                       listener: endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
                 parseInitializersOpt())
                   listener: handleNoInitializers()
@@ -90,7 +90,7 @@ parseUnit(class)
                   parseFormalParameters(y, MemberKind.NonStaticMethod)
                     parseFormalParametersRest((, MemberKind.NonStaticMethod)
                       listener: beginFormalParameters((, MemberKind.NonStaticMethod)
-                      parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                      parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(()
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -101,7 +101,7 @@ parseUnit(class)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(x, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue())
-                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                       listener: endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
                 parseInitializersOpt())
                   listener: handleNoInitializers()
@@ -162,7 +162,7 @@ parseUnit(class)
                   parseFormalParameters(B, MemberKind.NonStaticMethod)
                     parseFormalParametersRest((, MemberKind.NonStaticMethod)
                       listener: beginFormalParameters((, MemberKind.NonStaticMethod)
-                      parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                      parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(()
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -173,7 +173,7 @@ parseUnit(class)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(x, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue())
-                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                       listener: endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
                 parseInitializersOpt())
                   parseInitializers(:)
@@ -292,7 +292,7 @@ parseUnit(class)
                   parseFormalParameters(B2, MemberKind.NonStaticMethod)
                     parseFormalParametersRest((, MemberKind.NonStaticMethod)
                       listener: beginFormalParameters((, MemberKind.NonStaticMethod)
-                      parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                      parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(()
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -303,7 +303,7 @@ parseUnit(class)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(x, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue())
-                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                       listener: endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
                 parseInitializersOpt())
                   parseInitializers(:)
@@ -430,7 +430,7 @@ parseUnit(class)
                   parseFormalParameters(B3, MemberKind.NonStaticMethod)
                     parseFormalParametersRest((, MemberKind.NonStaticMethod)
                       listener: beginFormalParameters((, MemberKind.NonStaticMethod)
-                      parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                      parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(()
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -441,7 +441,7 @@ parseUnit(class)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(x, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue())
-                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                       listener: endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
                 parseInitializersOpt())
                   parseInitializers(:)
@@ -541,7 +541,7 @@ parseUnit(class)
                   parseFormalParameters(y, MemberKind.NonStaticMethod)
                     parseFormalParametersRest((, MemberKind.NonStaticMethod)
                       listener: beginFormalParameters((, MemberKind.NonStaticMethod)
-                      parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                      parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(()
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -552,7 +552,7 @@ parseUnit(class)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(x, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue())
-                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                       listener: endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
                 parseInitializersOpt())
                   listener: handleNoInitializers()
@@ -630,7 +630,7 @@ parseUnit(class)
                   parseFormalParameters(C, MemberKind.NonStaticMethod)
                     parseFormalParametersRest((, MemberKind.NonStaticMethod)
                       listener: beginFormalParameters((, MemberKind.NonStaticMethod)
-                      parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                      parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(()
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -641,7 +641,7 @@ parseUnit(class)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(x, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue())
-                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                       listener: endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
                 parseInitializersOpt())
                   parseInitializers(:)
@@ -760,7 +760,7 @@ parseUnit(class)
                   parseFormalParameters(D, MemberKind.NonStaticMethod)
                     parseFormalParametersRest((, MemberKind.NonStaticMethod)
                       listener: beginFormalParameters((, MemberKind.NonStaticMethod)
-                      parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                      parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(()
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -771,7 +771,7 @@ parseUnit(class)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(x, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue())
-                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                       listener: endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
                 parseInitializersOpt())
                   parseInitializers(:)
@@ -910,7 +910,7 @@ parseUnit(class)
                   parseFormalParameters(E, MemberKind.NonStaticMethod)
                     parseFormalParametersRest((, MemberKind.NonStaticMethod)
                       listener: beginFormalParameters((, MemberKind.NonStaticMethod)
-                      parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                      parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(()
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -921,7 +921,7 @@ parseUnit(class)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(x, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue())
-                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                       listener: endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
                 parseInitializersOpt())
                   parseInitializers(:)

pkg/front_end/parser_testcases/error_recovery/keyword_named_class_methods.dart.expect

@@ -511,7 +511,7 @@ beginCompilationUnit(class)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -569,7 +569,7 @@ beginCompilationUnit(class)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -628,7 +628,7 @@ beginCompilationUnit(class)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -684,7 +684,7 @@ beginCompilationUnit(class)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -742,7 +742,7 @@ beginCompilationUnit(class)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -801,7 +801,7 @@ beginCompilationUnit(class)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -866,7 +866,7 @@ beginCompilationUnit(class)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -926,7 +926,7 @@ beginCompilationUnit(class)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -986,7 +986,7 @@ beginCompilationUnit(class)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -1046,7 +1046,7 @@ beginCompilationUnit(class)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -1110,7 +1110,7 @@ beginCompilationUnit(class)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -1174,7 +1174,7 @@ beginCompilationUnit(class)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -1233,7 +1233,7 @@ beginCompilationUnit(class)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -1292,7 +1292,7 @@ beginCompilationUnit(class)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -1351,7 +1351,7 @@ beginCompilationUnit(class)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -1425,7 +1425,7 @@ beginCompilationUnit(class)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -1484,7 +1484,7 @@ beginCompilationUnit(class)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -1554,7 +1554,7 @@ beginCompilationUnit(class)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -1613,7 +1613,7 @@ beginCompilationUnit(class)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -1672,7 +1672,7 @@ beginCompilationUnit(class)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -1731,7 +1731,7 @@ beginCompilationUnit(class)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -1789,7 +1789,7 @@ beginCompilationUnit(class)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -1847,7 +1847,7 @@ beginCompilationUnit(class)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -1906,7 +1906,7 @@ beginCompilationUnit(class)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -1965,7 +1965,7 @@ beginCompilationUnit(class)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -2052,7 +2052,7 @@ beginCompilationUnit(class)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -2112,7 +2112,7 @@ beginCompilationUnit(class)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -2191,7 +2191,7 @@ beginCompilationUnit(class)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -2249,7 +2249,7 @@ beginCompilationUnit(class)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -2307,7 +2307,7 @@ beginCompilationUnit(class)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -2366,7 +2366,7 @@ beginCompilationUnit(class)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -2436,7 +2436,7 @@ beginCompilationUnit(class)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -2494,7 +2494,7 @@ beginCompilationUnit(class)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -2553,7 +2553,7 @@ beginCompilationUnit(class)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -2612,7 +2612,7 @@ beginCompilationUnit(class)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -2670,7 +2670,7 @@ beginCompilationUnit(class)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -2729,7 +2729,7 @@ beginCompilationUnit(class)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -2797,7 +2797,7 @@ beginCompilationUnit(class)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -2855,7 +2855,7 @@ beginCompilationUnit(class)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -2913,7 +2913,7 @@ beginCompilationUnit(class)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -2971,7 +2971,7 @@ beginCompilationUnit(class)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -3030,7 +3030,7 @@ beginCompilationUnit(class)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -3094,7 +3094,7 @@ beginCompilationUnit(class)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -3152,7 +3152,7 @@ beginCompilationUnit(class)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -3210,7 +3210,7 @@ beginCompilationUnit(class)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -3268,7 +3268,7 @@ beginCompilationUnit(class)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -3326,7 +3326,7 @@ beginCompilationUnit(class)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -3384,7 +3384,7 @@ beginCompilationUnit(class)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -3442,7 +3442,7 @@ beginCompilationUnit(class)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -3500,7 +3500,7 @@ beginCompilationUnit(class)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -3559,7 +3559,7 @@ beginCompilationUnit(class)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -3619,7 +3619,7 @@ beginCompilationUnit(class)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -3674,7 +3674,7 @@ beginCompilationUnit(class)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -3732,7 +3732,7 @@ beginCompilationUnit(class)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -3790,7 +3790,7 @@ beginCompilationUnit(class)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -3848,7 +3848,7 @@ beginCompilationUnit(class)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -3918,7 +3918,7 @@ beginCompilationUnit(class)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -3977,7 +3977,7 @@ beginCompilationUnit(class)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -4048,7 +4048,7 @@ beginCompilationUnit(class)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -4118,7 +4118,7 @@ beginCompilationUnit(class)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -4177,7 +4177,7 @@ beginCompilationUnit(class)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -4233,7 +4233,7 @@ beginCompilationUnit(class)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -4292,7 +4292,7 @@ beginCompilationUnit(class)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -4359,7 +4359,7 @@ beginCompilationUnit(class)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -4418,7 +4418,7 @@ beginCompilationUnit(class)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -4505,7 +4505,7 @@ beginCompilationUnit(class)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -4592,7 +4592,7 @@ beginCompilationUnit(class)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -4663,7 +4663,7 @@ beginCompilationUnit(class)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -4722,7 +4722,7 @@ beginCompilationUnit(class)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)

pkg/front_end/parser_testcases/error_recovery/keyword_named_formal_parameter.dart.expect

@@ -809,7 +809,7 @@ beginCompilationUnit(void)
           handleType(int, null)
           handleIdentifier(abstract, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, abstract, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, abstract, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -966,7 +966,7 @@ beginCompilationUnit(void)
           handleType(int, null)
           handleIdentifier(as, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, as, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, as, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -1124,7 +1124,7 @@ beginCompilationUnit(void)
           handleRecoverableError(Message[ExpectedIdentifierButGotKeyword, 'assert' can't be used as an identifier because it's a keyword., Try renaming this to be an identifier that isn't a keyword., {lexeme: assert}], assert, assert)
           handleIdentifier(assert, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, assert, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, assert, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -1286,7 +1286,7 @@ beginCompilationUnit(void)
           handleType(int, null)
           handleIdentifier(async, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, async, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, async, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -1443,7 +1443,7 @@ beginCompilationUnit(void)
           handleType(int, null)
           handleIdentifier(await, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, await, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, await, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -1601,7 +1601,7 @@ beginCompilationUnit(void)
           handleRecoverableError(Message[ExpectedIdentifierButGotKeyword, 'break' can't be used as an identifier because it's a keyword., Try renaming this to be an identifier that isn't a keyword., {lexeme: break}], break, break)
           handleIdentifier(break, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, break, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, break, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -1764,7 +1764,7 @@ beginCompilationUnit(void)
           handleRecoverableError(Message[ExpectedIdentifierButGotKeyword, 'case' can't be used as an identifier because it's a keyword., Try renaming this to be an identifier that isn't a keyword., {lexeme: case}], case, case)
           handleIdentifier(case, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, case, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, case, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -1927,7 +1927,7 @@ beginCompilationUnit(void)
           handleRecoverableError(Message[ExpectedIdentifierButGotKeyword, 'catch' can't be used as an identifier because it's a keyword., Try renaming this to be an identifier that isn't a keyword., {lexeme: catch}], catch, catch)
           handleIdentifier(catch, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, catch, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, catch, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -2090,7 +2090,7 @@ beginCompilationUnit(void)
           handleRecoverableError(Message[ExpectedIdentifierButGotKeyword, 'class' can't be used as an identifier because it's a keyword., Try renaming this to be an identifier that isn't a keyword., {lexeme: class}], class, class)
           handleIdentifier(class, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, class, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, class, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -2253,7 +2253,7 @@ beginCompilationUnit(void)
           handleRecoverableError(Message[ExpectedIdentifierButGotKeyword, 'const' can't be used as an identifier because it's a keyword., Try renaming this to be an identifier that isn't a keyword., {lexeme: const}], const, const)
           handleIdentifier(const, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, const, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, const, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -2416,7 +2416,7 @@ beginCompilationUnit(void)
           handleRecoverableError(Message[ExpectedIdentifierButGotKeyword, 'continue' can't be used as an identifier because it's a keyword., Try renaming this to be an identifier that isn't a keyword., {lexeme: continue}], continue, continue)
           handleIdentifier(continue, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, continue, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, continue, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -2578,7 +2578,7 @@ beginCompilationUnit(void)
           handleType(int, null)
           handleIdentifier(covariant, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, covariant, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, covariant, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -2736,7 +2736,7 @@ beginCompilationUnit(void)
           handleRecoverableError(Message[ExpectedIdentifierButGotKeyword, 'default' can't be used as an identifier because it's a keyword., Try renaming this to be an identifier that isn't a keyword., {lexeme: default}], default, default)
           handleIdentifier(default, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, default, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, default, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -2898,7 +2898,7 @@ beginCompilationUnit(void)
           handleType(int, null)
           handleIdentifier(deferred, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, deferred, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, deferred, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -3056,7 +3056,7 @@ beginCompilationUnit(void)
           handleRecoverableError(Message[ExpectedIdentifierButGotKeyword, 'do' can't be used as an identifier because it's a keyword., Try renaming this to be an identifier that isn't a keyword., {lexeme: do}], do, do)
           handleIdentifier(do, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, do, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, do, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -3218,7 +3218,7 @@ beginCompilationUnit(void)
           handleType(int, null)
           handleIdentifier(dynamic, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, dynamic, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, dynamic, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -3376,7 +3376,7 @@ beginCompilationUnit(void)
           handleRecoverableError(Message[ExpectedIdentifierButGotKeyword, 'else' can't be used as an identifier because it's a keyword., Try renaming this to be an identifier that isn't a keyword., {lexeme: else}], else, else)
           handleIdentifier(else, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, else, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, else, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -3539,7 +3539,7 @@ beginCompilationUnit(void)
           handleRecoverableError(Message[ExpectedIdentifierButGotKeyword, 'enum' can't be used as an identifier because it's a keyword., Try renaming this to be an identifier that isn't a keyword., {lexeme: enum}], enum, enum)
           handleIdentifier(enum, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, enum, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, enum, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -3701,7 +3701,7 @@ beginCompilationUnit(void)
           handleType(int, null)
           handleIdentifier(export, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, export, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, export, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -3859,7 +3859,7 @@ beginCompilationUnit(void)
           handleRecoverableError(Message[ExpectedIdentifierButGotKeyword, 'extends' can't be used as an identifier because it's a keyword., Try renaming this to be an identifier that isn't a keyword., {lexeme: extends}], extends, extends)
           handleIdentifier(extends, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, extends, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, extends, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -4021,7 +4021,7 @@ beginCompilationUnit(void)
           handleType(int, null)
           handleIdentifier(extension, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, extension, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, extension, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -4178,7 +4178,7 @@ beginCompilationUnit(void)
           handleType(int, null)
           handleIdentifier(external, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, external, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, external, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -4335,7 +4335,7 @@ beginCompilationUnit(void)
           handleType(int, null)
           handleIdentifier(factory, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, factory, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, factory, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -4493,7 +4493,7 @@ beginCompilationUnit(void)
           handleRecoverableError(Message[ExpectedIdentifierButGotKeyword, 'false' can't be used as an identifier because it's a keyword., Try renaming this to be an identifier that isn't a keyword., {lexeme: false}], false, false)
           handleIdentifier(false, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, false, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, false, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -4656,7 +4656,7 @@ beginCompilationUnit(void)
           handleRecoverableError(Message[ExpectedIdentifierButGotKeyword, 'final' can't be used as an identifier because it's a keyword., Try renaming this to be an identifier that isn't a keyword., {lexeme: final}], final, final)
           handleIdentifier(final, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, final, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, final, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -4819,7 +4819,7 @@ beginCompilationUnit(void)
           handleRecoverableError(Message[ExpectedIdentifierButGotKeyword, 'finally' can't be used as an identifier because it's a keyword., Try renaming this to be an identifier that isn't a keyword., {lexeme: finally}], finally, finally)
           handleIdentifier(finally, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, finally, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, finally, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -4982,7 +4982,7 @@ beginCompilationUnit(void)
           handleRecoverableError(Message[ExpectedIdentifierButGotKeyword, 'for' can't be used as an identifier because it's a keyword., Try renaming this to be an identifier that isn't a keyword., {lexeme: for}], for, for)
           handleIdentifier(for, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, for, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, for, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -5144,7 +5144,7 @@ beginCompilationUnit(void)
           handleType(int, null)
           handleIdentifier(Function, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, Function, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, Function, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -5301,7 +5301,7 @@ beginCompilationUnit(void)
           handleType(int, null)
           handleIdentifier(get, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, get, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, get, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -5458,7 +5458,7 @@ beginCompilationUnit(void)
           handleType(int, null)
           handleIdentifier(hide, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, hide, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, hide, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -5616,7 +5616,7 @@ beginCompilationUnit(void)
           handleRecoverableError(Message[ExpectedIdentifierButGotKeyword, 'if' can't be used as an identifier because it's a keyword., Try renaming this to be an identifier that isn't a keyword., {lexeme: if}], if, if)
           handleIdentifier(if, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, if, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, if, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -5778,7 +5778,7 @@ beginCompilationUnit(void)
           handleType(int, null)
           handleIdentifier(implements, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, implements, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, implements, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -5935,7 +5935,7 @@ beginCompilationUnit(void)
           handleType(int, null)
           handleIdentifier(import, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, import, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, import, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -6093,7 +6093,7 @@ beginCompilationUnit(void)
           handleRecoverableError(Message[ExpectedIdentifierButGotKeyword, 'in' can't be used as an identifier because it's a keyword., Try renaming this to be an identifier that isn't a keyword., {lexeme: in}], in, in)
           handleIdentifier(in, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, in, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, in, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -6255,7 +6255,7 @@ beginCompilationUnit(void)
           handleType(int, null)
           handleIdentifier(inout, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, inout, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, inout, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -6412,7 +6412,7 @@ beginCompilationUnit(void)
           handleType(int, null)
           handleIdentifier(interface, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, interface, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, interface, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -6570,7 +6570,7 @@ beginCompilationUnit(void)
           handleRecoverableError(Message[ExpectedIdentifierButGotKeyword, 'is' can't be used as an identifier because it's a keyword., Try renaming this to be an identifier that isn't a keyword., {lexeme: is}], is, is)
           handleIdentifier(is, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, is, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, is, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -6732,7 +6732,7 @@ beginCompilationUnit(void)
           handleType(int, null)
           handleIdentifier(late, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, late, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, late, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -6889,7 +6889,7 @@ beginCompilationUnit(void)
           handleType(int, null)
           handleIdentifier(library, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, library, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, library, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -7046,7 +7046,7 @@ beginCompilationUnit(void)
           handleType(int, null)
           handleIdentifier(mixin, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, mixin, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, mixin, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -7203,7 +7203,7 @@ beginCompilationUnit(void)
           handleType(int, null)
           handleIdentifier(native, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, native, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, native, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -7361,7 +7361,7 @@ beginCompilationUnit(void)
           handleRecoverableError(Message[ExpectedIdentifierButGotKeyword, 'new' can't be used as an identifier because it's a keyword., Try renaming this to be an identifier that isn't a keyword., {lexeme: new}], new, new)
           handleIdentifier(new, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, new, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, new, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -7524,7 +7524,7 @@ beginCompilationUnit(void)
           handleRecoverableError(Message[ExpectedIdentifierButGotKeyword, 'null' can't be used as an identifier because it's a keyword., Try renaming this to be an identifier that isn't a keyword., {lexeme: null}], null, null)
           handleIdentifier(null, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, null, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, null, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -7686,7 +7686,7 @@ beginCompilationUnit(void)
           handleType(int, null)
           handleIdentifier(of, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, of, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, of, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -7843,7 +7843,7 @@ beginCompilationUnit(void)
           handleType(int, null)
           handleIdentifier(on, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, on, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, on, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -8000,7 +8000,7 @@ beginCompilationUnit(void)
           handleType(int, null)
           handleIdentifier(operator, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, operator, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, operator, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -8157,7 +8157,7 @@ beginCompilationUnit(void)
           handleType(int, null)
           handleIdentifier(out, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, out, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, out, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -8314,7 +8314,7 @@ beginCompilationUnit(void)
           handleType(int, null)
           handleIdentifier(part, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, part, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, part, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -8471,7 +8471,7 @@ beginCompilationUnit(void)
           handleType(int, null)
           handleIdentifier(patch, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, patch, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, patch, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -8628,7 +8628,7 @@ beginCompilationUnit(void)
           handleType(int, null)
           handleIdentifier(required, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, required, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, required, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -8786,7 +8786,7 @@ beginCompilationUnit(void)
           handleRecoverableError(Message[ExpectedIdentifierButGotKeyword, 'rethrow' can't be used as an identifier because it's a keyword., Try renaming this to be an identifier that isn't a keyword., {lexeme: rethrow}], rethrow, rethrow)
           handleIdentifier(rethrow, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, rethrow, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, rethrow, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -8949,7 +8949,7 @@ beginCompilationUnit(void)
           handleRecoverableError(Message[ExpectedIdentifierButGotKeyword, 'return' can't be used as an identifier because it's a keyword., Try renaming this to be an identifier that isn't a keyword., {lexeme: return}], return, return)
           handleIdentifier(return, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, return, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, return, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -9111,7 +9111,7 @@ beginCompilationUnit(void)
           handleType(int, null)
           handleIdentifier(set, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, set, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, set, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -9268,7 +9268,7 @@ beginCompilationUnit(void)
           handleType(int, null)
           handleIdentifier(show, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, show, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, show, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -9425,7 +9425,7 @@ beginCompilationUnit(void)
           handleType(int, null)
           handleIdentifier(source, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, source, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, source, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -9582,7 +9582,7 @@ beginCompilationUnit(void)
           handleType(int, null)
           handleIdentifier(static, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, static, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, static, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -9740,7 +9740,7 @@ beginCompilationUnit(void)
           handleRecoverableError(Message[ExpectedIdentifierButGotKeyword, 'super' can't be used as an identifier because it's a keyword., Try renaming this to be an identifier that isn't a keyword., {lexeme: super}], super, super)
           handleIdentifier(super, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, super, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, super, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -9903,7 +9903,7 @@ beginCompilationUnit(void)
           handleRecoverableError(Message[ExpectedIdentifierButGotKeyword, 'switch' can't be used as an identifier because it's a keyword., Try renaming this to be an identifier that isn't a keyword., {lexeme: switch}], switch, switch)
           handleIdentifier(switch, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, switch, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, switch, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -10065,7 +10065,7 @@ beginCompilationUnit(void)
           handleType(int, null)
           handleIdentifier(sync, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, sync, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, sync, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -10223,7 +10223,7 @@ beginCompilationUnit(void)
           handleRecoverableError(Message[ExpectedIdentifierButGotKeyword, 'this' can't be used as an identifier because it's a keyword., Try renaming this to be an identifier that isn't a keyword., {lexeme: this}], this, this)
           handleIdentifier(this, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, this, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, this, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -10386,7 +10386,7 @@ beginCompilationUnit(void)
           handleRecoverableError(Message[ExpectedIdentifierButGotKeyword, 'throw' can't be used as an identifier because it's a keyword., Try renaming this to be an identifier that isn't a keyword., {lexeme: throw}], throw, throw)
           handleIdentifier(throw, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, throw, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, throw, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -10549,7 +10549,7 @@ beginCompilationUnit(void)
           handleRecoverableError(Message[ExpectedIdentifierButGotKeyword, 'true' can't be used as an identifier because it's a keyword., Try renaming this to be an identifier that isn't a keyword., {lexeme: true}], true, true)
           handleIdentifier(true, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, true, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, true, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -10712,7 +10712,7 @@ beginCompilationUnit(void)
           handleRecoverableError(Message[ExpectedIdentifierButGotKeyword, 'try' can't be used as an identifier because it's a keyword., Try renaming this to be an identifier that isn't a keyword., {lexeme: try}], try, try)
           handleIdentifier(try, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, try, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, try, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -10874,7 +10874,7 @@ beginCompilationUnit(void)
           handleType(int, null)
           handleIdentifier(typedef, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, typedef, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, typedef, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -11032,7 +11032,7 @@ beginCompilationUnit(void)
           handleRecoverableError(Message[ExpectedIdentifierButGotKeyword, 'var' can't be used as an identifier because it's a keyword., Try renaming this to be an identifier that isn't a keyword., {lexeme: var}], var, var)
           handleIdentifier(var, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, var, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, var, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -11195,7 +11195,7 @@ beginCompilationUnit(void)
           handleRecoverableError(Message[ExpectedIdentifierButGotKeyword, 'void' can't be used as an identifier because it's a keyword., Try renaming this to be an identifier that isn't a keyword., {lexeme: void}], void, void)
           handleIdentifier(void, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, void, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, void, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -11358,7 +11358,7 @@ beginCompilationUnit(void)
           handleRecoverableError(Message[ExpectedIdentifierButGotKeyword, 'while' can't be used as an identifier because it's a keyword., Try renaming this to be an identifier that isn't a keyword., {lexeme: while}], while, while)
           handleIdentifier(while, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, while, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, while, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -11521,7 +11521,7 @@ beginCompilationUnit(void)
           handleRecoverableError(Message[ExpectedIdentifierButGotKeyword, 'with' can't be used as an identifier because it's a keyword., Try renaming this to be an identifier that isn't a keyword., {lexeme: with}], with, with)
           handleIdentifier(with, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, with, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, with, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -11683,7 +11683,7 @@ beginCompilationUnit(void)
           handleType(int, null)
           handleIdentifier(yield, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, yield, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, yield, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)

pkg/front_end/parser_testcases/error_recovery/keyword_named_formal_parameter_prime.dart.expect

@@ -15,7 +15,7 @@ beginCompilationUnit(void)
           handleType(int, null)
           handleIdentifier(abstractX, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, abstractX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, abstractX, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -172,7 +172,7 @@ beginCompilationUnit(void)
           handleType(int, null)
           handleIdentifier(asX, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, asX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, asX, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -329,7 +329,7 @@ beginCompilationUnit(void)
           handleType(int, null)
           handleIdentifier(assertX, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, assertX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, assertX, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -486,7 +486,7 @@ beginCompilationUnit(void)
           handleType(int, null)
           handleIdentifier(asyncX, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, asyncX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, asyncX, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -643,7 +643,7 @@ beginCompilationUnit(void)
           handleType(int, null)
           handleIdentifier(awaitX, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, awaitX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, awaitX, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -800,7 +800,7 @@ beginCompilationUnit(void)
           handleType(int, null)
           handleIdentifier(breakX, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, breakX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, breakX, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -957,7 +957,7 @@ beginCompilationUnit(void)
           handleType(int, null)
           handleIdentifier(caseX, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, caseX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, caseX, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -1114,7 +1114,7 @@ beginCompilationUnit(void)
           handleType(int, null)
           handleIdentifier(catchX, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, catchX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, catchX, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -1271,7 +1271,7 @@ beginCompilationUnit(void)
           handleType(int, null)
           handleIdentifier(classX, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, classX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, classX, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -1428,7 +1428,7 @@ beginCompilationUnit(void)
           handleType(int, null)
           handleIdentifier(constX, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, constX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, constX, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -1585,7 +1585,7 @@ beginCompilationUnit(void)
           handleType(int, null)
           handleIdentifier(continueX, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, continueX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, continueX, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -1742,7 +1742,7 @@ beginCompilationUnit(void)
           handleType(int, null)
           handleIdentifier(covariantX, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, covariantX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, covariantX, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -1899,7 +1899,7 @@ beginCompilationUnit(void)
           handleType(int, null)
           handleIdentifier(defaultX, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, defaultX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, defaultX, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -2056,7 +2056,7 @@ beginCompilationUnit(void)
           handleType(int, null)
           handleIdentifier(deferredX, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, deferredX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, deferredX, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -2213,7 +2213,7 @@ beginCompilationUnit(void)
           handleType(int, null)
           handleIdentifier(doX, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, doX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, doX, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -2370,7 +2370,7 @@ beginCompilationUnit(void)
           handleType(int, null)
           handleIdentifier(dynamicX, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, dynamicX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, dynamicX, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -2527,7 +2527,7 @@ beginCompilationUnit(void)
           handleType(int, null)
           handleIdentifier(elseX, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, elseX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, elseX, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -2684,7 +2684,7 @@ beginCompilationUnit(void)
           handleType(int, null)
           handleIdentifier(enumX, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, enumX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, enumX, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -2841,7 +2841,7 @@ beginCompilationUnit(void)
           handleType(int, null)
           handleIdentifier(exportX, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, exportX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, exportX, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -2998,7 +2998,7 @@ beginCompilationUnit(void)
           handleType(int, null)
           handleIdentifier(extendsX, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, extendsX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, extendsX, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -3155,7 +3155,7 @@ beginCompilationUnit(void)
           handleType(int, null)
           handleIdentifier(extensionX, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, extensionX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, extensionX, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -3312,7 +3312,7 @@ beginCompilationUnit(void)
           handleType(int, null)
           handleIdentifier(externalX, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, externalX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, externalX, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -3469,7 +3469,7 @@ beginCompilationUnit(void)
           handleType(int, null)
           handleIdentifier(factoryX, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, factoryX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, factoryX, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -3626,7 +3626,7 @@ beginCompilationUnit(void)
           handleType(int, null)
           handleIdentifier(falseX, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, falseX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, falseX, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -3783,7 +3783,7 @@ beginCompilationUnit(void)
           handleType(int, null)
           handleIdentifier(finalX, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, finalX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, finalX, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -3940,7 +3940,7 @@ beginCompilationUnit(void)
           handleType(int, null)
           handleIdentifier(finallyX, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, finallyX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, finallyX, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -4097,7 +4097,7 @@ beginCompilationUnit(void)
           handleType(int, null)
           handleIdentifier(forX, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, forX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, forX, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -4254,7 +4254,7 @@ beginCompilationUnit(void)
           handleType(int, null)
           handleIdentifier(FunctionX, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, FunctionX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, FunctionX, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -4411,7 +4411,7 @@ beginCompilationUnit(void)
           handleType(int, null)
           handleIdentifier(getX, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, getX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, getX, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -4568,7 +4568,7 @@ beginCompilationUnit(void)
           handleType(int, null)
           handleIdentifier(hideX, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, hideX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, hideX, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -4725,7 +4725,7 @@ beginCompilationUnit(void)
           handleType(int, null)
           handleIdentifier(ifX, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, ifX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, ifX, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -4882,7 +4882,7 @@ beginCompilationUnit(void)
           handleType(int, null)
           handleIdentifier(implementsX, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, implementsX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, implementsX, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -5039,7 +5039,7 @@ beginCompilationUnit(void)
           handleType(int, null)
           handleIdentifier(importX, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, importX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, importX, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -5196,7 +5196,7 @@ beginCompilationUnit(void)
           handleType(int, null)
           handleIdentifier(inX, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, inX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, inX, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -5353,7 +5353,7 @@ beginCompilationUnit(void)
           handleType(int, null)
           handleIdentifier(inoutX, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, inoutX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, inoutX, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -5510,7 +5510,7 @@ beginCompilationUnit(void)
           handleType(int, null)
           handleIdentifier(interfaceX, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, interfaceX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, interfaceX, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -5667,7 +5667,7 @@ beginCompilationUnit(void)
           handleType(int, null)
           handleIdentifier(isX, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, isX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, isX, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -5824,7 +5824,7 @@ beginCompilationUnit(void)
           handleType(int, null)
           handleIdentifier(lateX, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, lateX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, lateX, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -5981,7 +5981,7 @@ beginCompilationUnit(void)
           handleType(int, null)
           handleIdentifier(libraryX, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, libraryX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, libraryX, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -6138,7 +6138,7 @@ beginCompilationUnit(void)
           handleType(int, null)
           handleIdentifier(mixinX, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, mixinX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, mixinX, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -6295,7 +6295,7 @@ beginCompilationUnit(void)
           handleType(int, null)
           handleIdentifier(nativeX, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, nativeX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, nativeX, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -6452,7 +6452,7 @@ beginCompilationUnit(void)
           handleType(int, null)
           handleIdentifier(newX, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, newX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, newX, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -6609,7 +6609,7 @@ beginCompilationUnit(void)
           handleType(int, null)
           handleIdentifier(nullX, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, nullX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, nullX, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -6766,7 +6766,7 @@ beginCompilationUnit(void)
           handleType(int, null)
           handleIdentifier(ofX, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, ofX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, ofX, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -6923,7 +6923,7 @@ beginCompilationUnit(void)
           handleType(int, null)
           handleIdentifier(onX, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, onX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, onX, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -7080,7 +7080,7 @@ beginCompilationUnit(void)
           handleType(int, null)
           handleIdentifier(operatorX, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, operatorX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, operatorX, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -7237,7 +7237,7 @@ beginCompilationUnit(void)
           handleType(int, null)
           handleIdentifier(outX, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, outX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, outX, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -7394,7 +7394,7 @@ beginCompilationUnit(void)
           handleType(int, null)
           handleIdentifier(partX, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, partX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, partX, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -7551,7 +7551,7 @@ beginCompilationUnit(void)
           handleType(int, null)
           handleIdentifier(patchX, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, patchX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, patchX, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -7708,7 +7708,7 @@ beginCompilationUnit(void)
           handleType(int, null)
           handleIdentifier(requiredX, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, requiredX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, requiredX, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -7865,7 +7865,7 @@ beginCompilationUnit(void)
           handleType(int, null)
           handleIdentifier(rethrowX, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, rethrowX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, rethrowX, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -8022,7 +8022,7 @@ beginCompilationUnit(void)
           handleType(int, null)
           handleIdentifier(returnX, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, returnX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, returnX, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -8179,7 +8179,7 @@ beginCompilationUnit(void)
           handleType(int, null)
           handleIdentifier(setX, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, setX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, setX, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -8336,7 +8336,7 @@ beginCompilationUnit(void)
           handleType(int, null)
           handleIdentifier(showX, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, showX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, showX, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -8493,7 +8493,7 @@ beginCompilationUnit(void)
           handleType(int, null)
           handleIdentifier(sourceX, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, sourceX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, sourceX, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -8650,7 +8650,7 @@ beginCompilationUnit(void)
           handleType(int, null)
           handleIdentifier(staticX, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, staticX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, staticX, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -8807,7 +8807,7 @@ beginCompilationUnit(void)
           handleType(int, null)
           handleIdentifier(superX, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, superX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, superX, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -8964,7 +8964,7 @@ beginCompilationUnit(void)
           handleType(int, null)
           handleIdentifier(switchX, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, switchX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, switchX, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -9121,7 +9121,7 @@ beginCompilationUnit(void)
           handleType(int, null)
           handleIdentifier(syncX, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, syncX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, syncX, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -9278,7 +9278,7 @@ beginCompilationUnit(void)
           handleType(int, null)
           handleIdentifier(thisX, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, thisX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, thisX, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -9435,7 +9435,7 @@ beginCompilationUnit(void)
           handleType(int, null)
           handleIdentifier(throwX, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, throwX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, throwX, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -9592,7 +9592,7 @@ beginCompilationUnit(void)
           handleType(int, null)
           handleIdentifier(trueX, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, trueX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, trueX, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -9749,7 +9749,7 @@ beginCompilationUnit(void)
           handleType(int, null)
           handleIdentifier(tryX, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, tryX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, tryX, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -9906,7 +9906,7 @@ beginCompilationUnit(void)
           handleType(int, null)
           handleIdentifier(typedefX, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, typedefX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, typedefX, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -10063,7 +10063,7 @@ beginCompilationUnit(void)
           handleType(int, null)
           handleIdentifier(varX, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, varX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, varX, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -10220,7 +10220,7 @@ beginCompilationUnit(void)
           handleType(int, null)
           handleIdentifier(voidX, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, voidX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, voidX, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -10377,7 +10377,7 @@ beginCompilationUnit(void)
           handleType(int, null)
           handleIdentifier(whileX, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, whileX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, whileX, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -10534,7 +10534,7 @@ beginCompilationUnit(void)
           handleType(int, null)
           handleIdentifier(withX, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, withX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, withX, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -10691,7 +10691,7 @@ beginCompilationUnit(void)
           handleType(int, null)
           handleIdentifier(yieldX, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, yieldX, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, yieldX, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)

pkg/front_end/parser_testcases/error_recovery/keyword_named_formal_parameter_start_of_next_top_level.dart.expect

@@ -23,7 +23,7 @@ beginCompilationUnit(f)
           handleNoType(()
           handleIdentifier(x, formalParameterDeclaration)
           handleFormalParameterWithoutValue(class)
-        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       handleRecoverableError(Message[ExpectedFunctionBody, Expected a function body, but got 'class'., null, {lexeme: class}], class, class)

pkg/front_end/parser_testcases/error_recovery/keyword_named_formal_parameter_start_of_next_top_level.dart.intertwined.expect

@@ -20,7 +20,7 @@ parseUnit(UnmatchedToken(())
           parseFormalParameters(f, MemberKind.TopLevelMethod)
             parseFormalParametersRest((, MemberKind.TopLevelMethod)
               listener: beginFormalParameters((, MemberKind.TopLevelMethod)
-              parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+              parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
                 parseMetadataStar(()
                   listener: beginMetadataStar(x)
                   listener: endMetadataStar(0)
@@ -29,7 +29,7 @@ parseUnit(UnmatchedToken(())
                 ensureIdentifier((, formalParameterDeclaration)
                   listener: handleIdentifier(x, formalParameterDeclaration)
                 listener: handleFormalParameterWithoutValue(class)
-                listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+                listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
               rewriter()
               listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
         parseAsyncModifierOpt())

pkg/front_end/parser_testcases/error_recovery/keyword_named_top_level_methods.dart.expect

@@ -483,7 +483,7 @@ beginCompilationUnit(int)
           handleType(int, null)
           handleIdentifier(x, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -540,7 +540,7 @@ beginCompilationUnit(int)
           handleType(int, null)
           handleIdentifier(x, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -598,7 +598,7 @@ beginCompilationUnit(int)
           handleType(int, null)
           handleIdentifier(x, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -653,7 +653,7 @@ beginCompilationUnit(int)
           handleType(int, null)
           handleIdentifier(x, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -710,7 +710,7 @@ beginCompilationUnit(int)
           handleType(int, null)
           handleIdentifier(x, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -768,7 +768,7 @@ beginCompilationUnit(int)
           handleType(int, null)
           handleIdentifier(x, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -832,7 +832,7 @@ beginCompilationUnit(int)
           handleType(int, null)
           handleIdentifier(x, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -891,7 +891,7 @@ beginCompilationUnit(int)
           handleType(int, null)
           handleIdentifier(x, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -950,7 +950,7 @@ beginCompilationUnit(int)
           handleType(int, null)
           handleIdentifier(x, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -1009,7 +1009,7 @@ beginCompilationUnit(int)
           handleType(int, null)
           handleIdentifier(x, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -1072,7 +1072,7 @@ beginCompilationUnit(int)
           handleType(int, null)
           handleIdentifier(x, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -1135,7 +1135,7 @@ beginCompilationUnit(int)
           handleType(int, null)
           handleIdentifier(x, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -1193,7 +1193,7 @@ beginCompilationUnit(int)
           handleType(int, null)
           handleIdentifier(x, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -1251,7 +1251,7 @@ beginCompilationUnit(int)
           handleType(int, null)
           handleIdentifier(x, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -1309,7 +1309,7 @@ beginCompilationUnit(int)
           handleType(int, null)
           handleIdentifier(x, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -1382,7 +1382,7 @@ beginCompilationUnit(int)
           handleType(int, null)
           handleIdentifier(x, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -1440,7 +1440,7 @@ beginCompilationUnit(int)
           handleType(int, null)
           handleIdentifier(x, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -1509,7 +1509,7 @@ beginCompilationUnit(int)
           handleType(int, null)
           handleIdentifier(x, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -1567,7 +1567,7 @@ beginCompilationUnit(int)
           handleType(int, null)
           handleIdentifier(x, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -1625,7 +1625,7 @@ beginCompilationUnit(int)
           handleType(int, null)
           handleIdentifier(x, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -1683,7 +1683,7 @@ beginCompilationUnit(int)
           handleType(int, null)
           handleIdentifier(x, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -1740,7 +1740,7 @@ beginCompilationUnit(int)
           handleType(int, null)
           handleIdentifier(x, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -1797,7 +1797,7 @@ beginCompilationUnit(int)
           handleType(int, null)
           handleIdentifier(x, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -1855,7 +1855,7 @@ beginCompilationUnit(int)
           handleType(int, null)
           handleIdentifier(x, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -1913,7 +1913,7 @@ beginCompilationUnit(int)
           handleType(int, null)
           handleIdentifier(x, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -1999,7 +1999,7 @@ beginCompilationUnit(int)
           handleType(int, null)
           handleIdentifier(x, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -2058,7 +2058,7 @@ beginCompilationUnit(int)
           handleType(int, null)
           handleIdentifier(x, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -2136,7 +2136,7 @@ beginCompilationUnit(int)
           handleType(int, null)
           handleIdentifier(x, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -2193,7 +2193,7 @@ beginCompilationUnit(int)
           handleType(int, null)
           handleIdentifier(x, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -2250,7 +2250,7 @@ beginCompilationUnit(int)
           handleType(int, null)
           handleIdentifier(x, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -2308,7 +2308,7 @@ beginCompilationUnit(int)
           handleType(int, null)
           handleIdentifier(x, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -2377,7 +2377,7 @@ beginCompilationUnit(int)
           handleType(int, null)
           handleIdentifier(x, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -2434,7 +2434,7 @@ beginCompilationUnit(int)
           handleType(int, null)
           handleIdentifier(x, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -2492,7 +2492,7 @@ beginCompilationUnit(int)
           handleType(int, null)
           handleIdentifier(x, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -2550,7 +2550,7 @@ beginCompilationUnit(int)
           handleType(int, null)
           handleIdentifier(x, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -2607,7 +2607,7 @@ beginCompilationUnit(int)
           handleType(int, null)
           handleIdentifier(x, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -2665,7 +2665,7 @@ beginCompilationUnit(int)
           handleType(int, null)
           handleIdentifier(x, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -2732,7 +2732,7 @@ beginCompilationUnit(int)
           handleType(int, null)
           handleIdentifier(x, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -2789,7 +2789,7 @@ beginCompilationUnit(int)
           handleType(int, null)
           handleIdentifier(x, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -2846,7 +2846,7 @@ beginCompilationUnit(int)
           handleType(int, null)
           handleIdentifier(x, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -2903,7 +2903,7 @@ beginCompilationUnit(int)
           handleType(int, null)
           handleIdentifier(x, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -2961,7 +2961,7 @@ beginCompilationUnit(int)
           handleType(int, null)
           handleIdentifier(x, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -3024,7 +3024,7 @@ beginCompilationUnit(int)
           handleType(int, null)
           handleIdentifier(x, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -3081,7 +3081,7 @@ beginCompilationUnit(int)
           handleType(int, null)
           handleIdentifier(x, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -3138,7 +3138,7 @@ beginCompilationUnit(int)
           handleType(int, null)
           handleIdentifier(x, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -3195,7 +3195,7 @@ beginCompilationUnit(int)
           handleType(int, null)
           handleIdentifier(x, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -3252,7 +3252,7 @@ beginCompilationUnit(int)
           handleType(int, null)
           handleIdentifier(x, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -3309,7 +3309,7 @@ beginCompilationUnit(int)
           handleType(int, null)
           handleIdentifier(x, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -3366,7 +3366,7 @@ beginCompilationUnit(int)
           handleType(int, null)
           handleIdentifier(x, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -3423,7 +3423,7 @@ beginCompilationUnit(int)
           handleType(int, null)
           handleIdentifier(x, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -3481,7 +3481,7 @@ beginCompilationUnit(int)
           handleType(int, null)
           handleIdentifier(x, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -3540,7 +3540,7 @@ beginCompilationUnit(int)
           handleType(int, null)
           handleIdentifier(x, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -3594,7 +3594,7 @@ beginCompilationUnit(int)
           handleType(int, null)
           handleIdentifier(x, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -3651,7 +3651,7 @@ beginCompilationUnit(int)
           handleType(int, null)
           handleIdentifier(x, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -3708,7 +3708,7 @@ beginCompilationUnit(int)
           handleType(int, null)
           handleIdentifier(x, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -3765,7 +3765,7 @@ beginCompilationUnit(int)
           handleType(int, null)
           handleIdentifier(x, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -3823,7 +3823,7 @@ beginCompilationUnit(int)
           handleType(int, null)
           handleIdentifier(x, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -3881,7 +3881,7 @@ beginCompilationUnit(int)
           handleType(int, null)
           handleIdentifier(x, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -3951,7 +3951,7 @@ beginCompilationUnit(int)
           handleType(int, null)
           handleIdentifier(x, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -4009,7 +4009,7 @@ beginCompilationUnit(int)
           handleType(int, null)
           handleIdentifier(x, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -4067,7 +4067,7 @@ beginCompilationUnit(int)
           handleType(int, null)
           handleIdentifier(x, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -4122,7 +4122,7 @@ beginCompilationUnit(int)
           handleType(int, null)
           handleIdentifier(x, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -4180,7 +4180,7 @@ beginCompilationUnit(int)
           handleType(int, null)
           handleIdentifier(x, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -4246,7 +4246,7 @@ beginCompilationUnit(int)
           handleType(int, null)
           handleIdentifier(x, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -4304,7 +4304,7 @@ beginCompilationUnit(int)
           handleType(int, null)
           handleIdentifier(x, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -4390,7 +4390,7 @@ beginCompilationUnit(int)
           handleType(int, null)
           handleIdentifier(x, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -4476,7 +4476,7 @@ beginCompilationUnit(int)
           handleType(int, null)
           handleIdentifier(x, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -4546,7 +4546,7 @@ beginCompilationUnit(int)
           handleType(int, null)
           handleIdentifier(x, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -4604,7 +4604,7 @@ beginCompilationUnit(int)
           handleType(int, null)
           handleIdentifier(x, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)

pkg/front_end/parser_testcases/error_recovery/method_called_with.dart.expect

@@ -103,7 +103,7 @@ beginCompilationUnit(class)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)

pkg/front_end/parser_testcases/error_recovery/method_called_with.dart.intertwined.expect

@@ -159,7 +159,7 @@ parseUnit(class)
                   parseFormalParameters(with, MemberKind.NonStaticMethod)
                     parseFormalParametersRest((, MemberKind.NonStaticMethod)
                       listener: beginFormalParameters((, MemberKind.NonStaticMethod)
-                      parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                      parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(()
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -170,7 +170,7 @@ parseUnit(class)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(x, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue())
-                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                       listener: endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
                 parseInitializersOpt())
                   listener: handleNoInitializers()

pkg/front_end/parser_testcases/error_recovery/method_called_with_prime.dart.expect

@@ -73,7 +73,7 @@ beginCompilationUnit(class)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)

pkg/front_end/parser_testcases/error_recovery/method_called_with_prime.dart.intertwined.expect

@@ -143,7 +143,7 @@ parseUnit(class)
                   parseFormalParameters(With, MemberKind.NonStaticMethod)
                     parseFormalParametersRest((, MemberKind.NonStaticMethod)
                       listener: beginFormalParameters((, MemberKind.NonStaticMethod)
-                      parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                      parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(()
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -154,7 +154,7 @@ parseUnit(class)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(x, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue())
-                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                       listener: endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
                 parseInitializersOpt())
                   listener: handleNoInitializers()

pkg/front_end/parser_testcases/error_recovery/utf_16_le_content.crash_dart.intertwined.expect

@@ -124,7 +124,7 @@ parseUnit(EncodingErrorToken())
           parseFormalParameters(t, MemberKind.TopLevelMethod)
             parseFormalParametersRest((, MemberKind.TopLevelMethod)
               listener: beginFormalParameters((, MemberKind.TopLevelMethod)
-              parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+              parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
                 parseMetadataStar(()
                   listener: beginMetadataStar(c)
                   listener: endMetadataStar(0)
@@ -133,7 +133,7 @@ parseUnit(EncodingErrorToken())
                 ensureIdentifier((, formalParameterDeclaration)
                   listener: handleIdentifier(c, formalParameterDeclaration)
                 listener: handleFormalParameterWithoutValue())
-                listener: endFormalParameter(null, null, null, c, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+                listener: endFormalParameter(null, null, null, c, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
               listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
         parseAsyncModifierOpt())
           listener: handleAsyncModifier(null, null)

pkg/front_end/parser_testcases/extension_named_type.dart.expect

@@ -58,7 +58,7 @@ beginCompilationUnit(class)
           handleType(A, null)
           handleIdentifier(a, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, a, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, a, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       handleIdentifier(type, expression)

pkg/front_end/parser_testcases/extension_named_type.dart.intertwined.expect

@@ -98,7 +98,7 @@ parseUnit(class)
           parseFormalParameters(test, MemberKind.TopLevelMethod)
             parseFormalParametersRest((, MemberKind.TopLevelMethod)
               listener: beginFormalParameters((, MemberKind.TopLevelMethod)
-              parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+              parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
                 parseMetadataStar(()
                   listener: beginMetadataStar(A)
                   listener: endMetadataStar(0)
@@ -109,7 +109,7 @@ parseUnit(class)
                 ensureIdentifier(A, formalParameterDeclaration)
                   listener: handleIdentifier(a, formalParameterDeclaration)
                 listener: handleFormalParameterWithoutValue())
-                listener: endFormalParameter(null, null, null, a, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+                listener: endFormalParameter(null, null, null, a, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
               listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
         parseAsyncModifierOpt())
           listener: handleAsyncModifier(null, null)

pkg/front_end/parser_testcases/extensions/covariant.dart.expect

@@ -64,7 +64,7 @@ beginCompilationUnit(class)
                 handleType(A, null)
                 handleIdentifier(child, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, child, null, null, FormalParameterKind.mandatory, MemberKind.ExtensionNonStaticMethod)
+              endFormalParameter(null, null, null, child, null, null, FormalParameterKind.requiredPositional, MemberKind.ExtensionNonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.ExtensionNonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)

pkg/front_end/parser_testcases/extensions/covariant.dart.intertwined.expect

@@ -93,7 +93,7 @@ parseUnit(class)
                 parseFormalParameters(addChild, MemberKind.ExtensionNonStaticMethod)
                   parseFormalParametersRest((, MemberKind.ExtensionNonStaticMethod)
                     listener: beginFormalParameters((, MemberKind.ExtensionNonStaticMethod)
-                    parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.ExtensionNonStaticMethod)
+                    parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.ExtensionNonStaticMethod)
                       parseMetadataStar(()
                         listener: beginMetadataStar(covariant)
                         listener: endMetadataStar(0)
@@ -106,7 +106,7 @@ parseUnit(class)
                       ensureIdentifier(A, formalParameterDeclaration)
                         listener: handleIdentifier(child, formalParameterDeclaration)
                       listener: handleFormalParameterWithoutValue())
-                      listener: endFormalParameter(null, null, null, child, null, null, FormalParameterKind.mandatory, MemberKind.ExtensionNonStaticMethod)
+                      listener: endFormalParameter(null, null, null, child, null, null, FormalParameterKind.requiredPositional, MemberKind.ExtensionNonStaticMethod)
                     listener: endFormalParameters(1, (, ), MemberKind.ExtensionNonStaticMethod)
               parseInitializersOpt())
                 listener: handleNoInitializers()

pkg/front_end/parser_testcases/extensions/not_covariant.dart.expect

@@ -57,7 +57,7 @@ beginCompilationUnit(class)
                 handleType(A, null)
                 handleIdentifier(child, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, child, null, null, FormalParameterKind.mandatory, MemberKind.ExtensionNonStaticMethod)
+              endFormalParameter(null, null, null, child, null, null, FormalParameterKind.requiredPositional, MemberKind.ExtensionNonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.ExtensionNonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)

pkg/front_end/parser_testcases/extensions/not_covariant.dart.intertwined.expect

@@ -93,7 +93,7 @@ parseUnit(class)
                 parseFormalParameters(addChild, MemberKind.ExtensionNonStaticMethod)
                   parseFormalParametersRest((, MemberKind.ExtensionNonStaticMethod)
                     listener: beginFormalParameters((, MemberKind.ExtensionNonStaticMethod)
-                    parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.ExtensionNonStaticMethod)
+                    parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.ExtensionNonStaticMethod)
                       parseMetadataStar(()
                         listener: beginMetadataStar(A)
                         listener: endMetadataStar(0)
@@ -104,7 +104,7 @@ parseUnit(class)
                       ensureIdentifier(A, formalParameterDeclaration)
                         listener: handleIdentifier(child, formalParameterDeclaration)
                       listener: handleFormalParameterWithoutValue())
-                      listener: endFormalParameter(null, null, null, child, null, null, FormalParameterKind.mandatory, MemberKind.ExtensionNonStaticMethod)
+                      listener: endFormalParameter(null, null, null, child, null, null, FormalParameterKind.requiredPositional, MemberKind.ExtensionNonStaticMethod)
                     listener: endFormalParameters(1, (, ), MemberKind.ExtensionNonStaticMethod)
               parseInitializersOpt())
                 listener: handleNoInitializers()

pkg/front_end/parser_testcases/extensions/static.dart.expect

@@ -57,7 +57,7 @@ beginCompilationUnit(class)
                 handleType(A, null)
                 handleIdentifier(child, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, child, null, null, FormalParameterKind.mandatory, MemberKind.ExtensionStaticMethod)
+              endFormalParameter(null, null, null, child, null, null, FormalParameterKind.requiredPositional, MemberKind.ExtensionStaticMethod)
             endFormalParameters(1, (, ), MemberKind.ExtensionStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)

pkg/front_end/parser_testcases/extensions/static.dart.intertwined.expect

@@ -93,7 +93,7 @@ parseUnit(class)
                 parseFormalParameters(addChild, MemberKind.ExtensionStaticMethod)
                   parseFormalParametersRest((, MemberKind.ExtensionStaticMethod)
                     listener: beginFormalParameters((, MemberKind.ExtensionStaticMethod)
-                    parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.ExtensionStaticMethod)
+                    parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.ExtensionStaticMethod)
                       parseMetadataStar(()
                         listener: beginMetadataStar(A)
                         listener: endMetadataStar(0)
@@ -104,7 +104,7 @@ parseUnit(class)
                       ensureIdentifier(A, formalParameterDeclaration)
                         listener: handleIdentifier(child, formalParameterDeclaration)
                       listener: handleFormalParameterWithoutValue())
-                      listener: endFormalParameter(null, null, null, child, null, null, FormalParameterKind.mandatory, MemberKind.ExtensionStaticMethod)
+                      listener: endFormalParameter(null, null, null, child, null, null, FormalParameterKind.requiredPositional, MemberKind.ExtensionStaticMethod)
                     listener: endFormalParameters(1, (, ), MemberKind.ExtensionStaticMethod)
               parseInitializersOpt())
                 listener: handleNoInitializers()

pkg/front_end/parser_testcases/extensions/static_covariant.dart.expect

@@ -64,7 +64,7 @@ beginCompilationUnit(class)
                 handleType(A, null)
                 handleIdentifier(child, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, child, null, null, FormalParameterKind.mandatory, MemberKind.ExtensionStaticMethod)
+              endFormalParameter(null, null, null, child, null, null, FormalParameterKind.requiredPositional, MemberKind.ExtensionStaticMethod)
             endFormalParameters(1, (, ), MemberKind.ExtensionStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)

pkg/front_end/parser_testcases/extensions/static_covariant.dart.intertwined.expect

@@ -93,7 +93,7 @@ parseUnit(class)
                 parseFormalParameters(addChild, MemberKind.ExtensionStaticMethod)
                   parseFormalParametersRest((, MemberKind.ExtensionStaticMethod)
                     listener: beginFormalParameters((, MemberKind.ExtensionStaticMethod)
-                    parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.ExtensionStaticMethod)
+                    parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.ExtensionStaticMethod)
                       parseMetadataStar(()
                         listener: beginMetadataStar(covariant)
                         listener: endMetadataStar(0)
@@ -106,7 +106,7 @@ parseUnit(class)
                       ensureIdentifier(A, formalParameterDeclaration)
                         listener: handleIdentifier(child, formalParameterDeclaration)
                       listener: handleFormalParameterWithoutValue())
-                      listener: endFormalParameter(null, null, null, child, null, null, FormalParameterKind.mandatory, MemberKind.ExtensionStaticMethod)
+                      listener: endFormalParameter(null, null, null, child, null, null, FormalParameterKind.requiredPositional, MemberKind.ExtensionStaticMethod)
                     listener: endFormalParameters(1, (, ), MemberKind.ExtensionStaticMethod)
               parseInitializersOpt())
                 listener: handleNoInitializers()

pkg/front_end/parser_testcases/general/built_in_identifier_class_methods.dart.expect

@@ -29,7 +29,7 @@ beginCompilationUnit(class)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -84,7 +84,7 @@ beginCompilationUnit(class)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -139,7 +139,7 @@ beginCompilationUnit(class)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -194,7 +194,7 @@ beginCompilationUnit(class)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -249,7 +249,7 @@ beginCompilationUnit(class)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -304,7 +304,7 @@ beginCompilationUnit(class)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -359,7 +359,7 @@ beginCompilationUnit(class)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -414,7 +414,7 @@ beginCompilationUnit(class)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -469,7 +469,7 @@ beginCompilationUnit(class)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -524,7 +524,7 @@ beginCompilationUnit(class)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -579,7 +579,7 @@ beginCompilationUnit(class)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -634,7 +634,7 @@ beginCompilationUnit(class)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -689,7 +689,7 @@ beginCompilationUnit(class)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -744,7 +744,7 @@ beginCompilationUnit(class)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -799,7 +799,7 @@ beginCompilationUnit(class)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -854,7 +854,7 @@ beginCompilationUnit(class)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -909,7 +909,7 @@ beginCompilationUnit(class)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -964,7 +964,7 @@ beginCompilationUnit(class)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -1019,7 +1019,7 @@ beginCompilationUnit(class)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)
@@ -1074,7 +1074,7 @@ beginCompilationUnit(class)
                 handleType(int, null)
                 handleIdentifier(x, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+              endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
             endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
             handleNoInitializers()
             handleAsyncModifier(null, null)

pkg/front_end/parser_testcases/general/built_in_identifier_class_methods.dart.intertwined.expect

@@ -45,7 +45,7 @@ parseUnit(class)
                   parseFormalParameters(abstract, MemberKind.NonStaticMethod)
                     parseFormalParametersRest((, MemberKind.NonStaticMethod)
                       listener: beginFormalParameters((, MemberKind.NonStaticMethod)
-                      parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                      parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(()
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -56,7 +56,7 @@ parseUnit(class)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(x, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue())
-                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                       listener: endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
                 parseInitializersOpt())
                   listener: handleNoInitializers()
@@ -182,7 +182,7 @@ parseUnit(class)
                   parseFormalParameters(as, MemberKind.NonStaticMethod)
                     parseFormalParametersRest((, MemberKind.NonStaticMethod)
                       listener: beginFormalParameters((, MemberKind.NonStaticMethod)
-                      parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                      parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(()
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -193,7 +193,7 @@ parseUnit(class)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(x, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue())
-                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                       listener: endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
                 parseInitializersOpt())
                   listener: handleNoInitializers()
@@ -319,7 +319,7 @@ parseUnit(class)
                   parseFormalParameters(covariant, MemberKind.NonStaticMethod)
                     parseFormalParametersRest((, MemberKind.NonStaticMethod)
                       listener: beginFormalParameters((, MemberKind.NonStaticMethod)
-                      parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                      parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(()
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -330,7 +330,7 @@ parseUnit(class)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(x, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue())
-                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                       listener: endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
                 parseInitializersOpt())
                   listener: handleNoInitializers()
@@ -456,7 +456,7 @@ parseUnit(class)
                   parseFormalParameters(deferred, MemberKind.NonStaticMethod)
                     parseFormalParametersRest((, MemberKind.NonStaticMethod)
                       listener: beginFormalParameters((, MemberKind.NonStaticMethod)
-                      parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                      parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(()
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -467,7 +467,7 @@ parseUnit(class)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(x, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue())
-                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                       listener: endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
                 parseInitializersOpt())
                   listener: handleNoInitializers()
@@ -593,7 +593,7 @@ parseUnit(class)
                   parseFormalParameters(dynamic, MemberKind.NonStaticMethod)
                     parseFormalParametersRest((, MemberKind.NonStaticMethod)
                       listener: beginFormalParameters((, MemberKind.NonStaticMethod)
-                      parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                      parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(()
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -604,7 +604,7 @@ parseUnit(class)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(x, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue())
-                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                       listener: endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
                 parseInitializersOpt())
                   listener: handleNoInitializers()
@@ -730,7 +730,7 @@ parseUnit(class)
                   parseFormalParameters(export, MemberKind.NonStaticMethod)
                     parseFormalParametersRest((, MemberKind.NonStaticMethod)
                       listener: beginFormalParameters((, MemberKind.NonStaticMethod)
-                      parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                      parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(()
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -741,7 +741,7 @@ parseUnit(class)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(x, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue())
-                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                       listener: endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
                 parseInitializersOpt())
                   listener: handleNoInitializers()
@@ -867,7 +867,7 @@ parseUnit(class)
                   parseFormalParameters(external, MemberKind.NonStaticMethod)
                     parseFormalParametersRest((, MemberKind.NonStaticMethod)
                       listener: beginFormalParameters((, MemberKind.NonStaticMethod)
-                      parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                      parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(()
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -878,7 +878,7 @@ parseUnit(class)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(x, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue())
-                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                       listener: endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
                 parseInitializersOpt())
                   listener: handleNoInitializers()
@@ -1004,7 +1004,7 @@ parseUnit(class)
                   parseFormalParameters(factory, MemberKind.NonStaticMethod)
                     parseFormalParametersRest((, MemberKind.NonStaticMethod)
                       listener: beginFormalParameters((, MemberKind.NonStaticMethod)
-                      parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                      parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(()
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -1015,7 +1015,7 @@ parseUnit(class)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(x, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue())
-                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                       listener: endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
                 parseInitializersOpt())
                   listener: handleNoInitializers()
@@ -1141,7 +1141,7 @@ parseUnit(class)
                   parseFormalParameters(Function, MemberKind.NonStaticMethod)
                     parseFormalParametersRest((, MemberKind.NonStaticMethod)
                       listener: beginFormalParameters((, MemberKind.NonStaticMethod)
-                      parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                      parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(()
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -1152,7 +1152,7 @@ parseUnit(class)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(x, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue())
-                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                       listener: endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
                 parseInitializersOpt())
                   listener: handleNoInitializers()
@@ -1279,7 +1279,7 @@ parseUnit(class)
                   parseFormalParameters(get, MemberKind.NonStaticMethod)
                     parseFormalParametersRest((, MemberKind.NonStaticMethod)
                       listener: beginFormalParameters((, MemberKind.NonStaticMethod)
-                      parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                      parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(()
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -1290,7 +1290,7 @@ parseUnit(class)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(x, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue())
-                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                       listener: endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
                 parseInitializersOpt())
                   listener: handleNoInitializers()
@@ -1416,7 +1416,7 @@ parseUnit(class)
                   parseFormalParameters(implements, MemberKind.NonStaticMethod)
                     parseFormalParametersRest((, MemberKind.NonStaticMethod)
                       listener: beginFormalParameters((, MemberKind.NonStaticMethod)
-                      parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                      parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(()
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -1427,7 +1427,7 @@ parseUnit(class)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(x, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue())
-                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                       listener: endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
                 parseInitializersOpt())
                   listener: handleNoInitializers()
@@ -1553,7 +1553,7 @@ parseUnit(class)
                   parseFormalParameters(import, MemberKind.NonStaticMethod)
                     parseFormalParametersRest((, MemberKind.NonStaticMethod)
                       listener: beginFormalParameters((, MemberKind.NonStaticMethod)
-                      parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                      parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(()
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -1564,7 +1564,7 @@ parseUnit(class)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(x, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue())
-                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                       listener: endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
                 parseInitializersOpt())
                   listener: handleNoInitializers()
@@ -1690,7 +1690,7 @@ parseUnit(class)
                   parseFormalParameters(interface, MemberKind.NonStaticMethod)
                     parseFormalParametersRest((, MemberKind.NonStaticMethod)
                       listener: beginFormalParameters((, MemberKind.NonStaticMethod)
-                      parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                      parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(()
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -1701,7 +1701,7 @@ parseUnit(class)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(x, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue())
-                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                       listener: endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
                 parseInitializersOpt())
                   listener: handleNoInitializers()
@@ -1827,7 +1827,7 @@ parseUnit(class)
                   parseFormalParameters(library, MemberKind.NonStaticMethod)
                     parseFormalParametersRest((, MemberKind.NonStaticMethod)
                       listener: beginFormalParameters((, MemberKind.NonStaticMethod)
-                      parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                      parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(()
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -1838,7 +1838,7 @@ parseUnit(class)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(x, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue())
-                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                       listener: endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
                 parseInitializersOpt())
                   listener: handleNoInitializers()
@@ -1966,7 +1966,7 @@ parseUnit(class)
                   parseFormalParameters(operator, MemberKind.NonStaticMethod)
                     parseFormalParametersRest((, MemberKind.NonStaticMethod)
                       listener: beginFormalParameters((, MemberKind.NonStaticMethod)
-                      parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                      parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(()
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -1977,7 +1977,7 @@ parseUnit(class)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(x, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue())
-                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                       listener: endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
                 parseInitializersOpt())
                   listener: handleNoInitializers()
@@ -2103,7 +2103,7 @@ parseUnit(class)
                   parseFormalParameters(mixin, MemberKind.NonStaticMethod)
                     parseFormalParametersRest((, MemberKind.NonStaticMethod)
                       listener: beginFormalParameters((, MemberKind.NonStaticMethod)
-                      parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                      parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(()
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -2114,7 +2114,7 @@ parseUnit(class)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(x, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue())
-                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                       listener: endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
                 parseInitializersOpt())
                   listener: handleNoInitializers()
@@ -2240,7 +2240,7 @@ parseUnit(class)
                   parseFormalParameters(part, MemberKind.NonStaticMethod)
                     parseFormalParametersRest((, MemberKind.NonStaticMethod)
                       listener: beginFormalParameters((, MemberKind.NonStaticMethod)
-                      parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                      parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(()
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -2251,7 +2251,7 @@ parseUnit(class)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(x, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue())
-                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                       listener: endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
                 parseInitializersOpt())
                   listener: handleNoInitializers()
@@ -2378,7 +2378,7 @@ parseUnit(class)
                   parseFormalParameters(set, MemberKind.NonStaticMethod)
                     parseFormalParametersRest((, MemberKind.NonStaticMethod)
                       listener: beginFormalParameters((, MemberKind.NonStaticMethod)
-                      parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                      parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(()
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -2389,7 +2389,7 @@ parseUnit(class)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(x, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue())
-                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                       listener: endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
                 parseInitializersOpt())
                   listener: handleNoInitializers()
@@ -2515,7 +2515,7 @@ parseUnit(class)
                   parseFormalParameters(static, MemberKind.NonStaticMethod)
                     parseFormalParametersRest((, MemberKind.NonStaticMethod)
                       listener: beginFormalParameters((, MemberKind.NonStaticMethod)
-                      parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                      parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(()
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -2526,7 +2526,7 @@ parseUnit(class)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(x, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue())
-                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                       listener: endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
                 parseInitializersOpt())
                   listener: handleNoInitializers()
@@ -2652,7 +2652,7 @@ parseUnit(class)
                   parseFormalParameters(typedef, MemberKind.NonStaticMethod)
                     parseFormalParametersRest((, MemberKind.NonStaticMethod)
                       listener: beginFormalParameters((, MemberKind.NonStaticMethod)
-                      parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                      parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                         parseMetadataStar(()
                           listener: beginMetadataStar(int)
                           listener: endMetadataStar(0)
@@ -2663,7 +2663,7 @@ parseUnit(class)
                         ensureIdentifier(int, formalParameterDeclaration)
                           listener: handleIdentifier(x, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue())
-                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.NonStaticMethod)
+                        listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.NonStaticMethod)
                       listener: endFormalParameters(1, (, ), MemberKind.NonStaticMethod)
                 parseInitializersOpt())
                   listener: handleNoInitializers()

pkg/front_end/parser_testcases/general/built_in_identifier_top_level_methods.dart.expect

@@ -17,7 +17,7 @@ beginCompilationUnit(int)
           handleType(int, null)
           handleIdentifier(x, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -71,7 +71,7 @@ beginCompilationUnit(int)
           handleType(int, null)
           handleIdentifier(x, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -125,7 +125,7 @@ beginCompilationUnit(int)
           handleType(int, null)
           handleIdentifier(x, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -179,7 +179,7 @@ beginCompilationUnit(int)
           handleType(int, null)
           handleIdentifier(x, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -233,7 +233,7 @@ beginCompilationUnit(int)
           handleType(int, null)
           handleIdentifier(x, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -287,7 +287,7 @@ beginCompilationUnit(int)
           handleType(int, null)
           handleIdentifier(x, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -341,7 +341,7 @@ beginCompilationUnit(int)
           handleType(int, null)
           handleIdentifier(x, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -395,7 +395,7 @@ beginCompilationUnit(int)
           handleType(int, null)
           handleIdentifier(x, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -449,7 +449,7 @@ beginCompilationUnit(int)
           handleType(int, null)
           handleIdentifier(x, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -503,7 +503,7 @@ beginCompilationUnit(int)
           handleType(int, null)
           handleIdentifier(x, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -557,7 +557,7 @@ beginCompilationUnit(int)
           handleType(int, null)
           handleIdentifier(x, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -611,7 +611,7 @@ beginCompilationUnit(int)
           handleType(int, null)
           handleIdentifier(x, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -665,7 +665,7 @@ beginCompilationUnit(int)
           handleType(int, null)
           handleIdentifier(x, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -719,7 +719,7 @@ beginCompilationUnit(int)
           handleType(int, null)
           handleIdentifier(x, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -773,7 +773,7 @@ beginCompilationUnit(int)
           handleType(int, null)
           handleIdentifier(x, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -827,7 +827,7 @@ beginCompilationUnit(int)
           handleType(int, null)
           handleIdentifier(x, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -881,7 +881,7 @@ beginCompilationUnit(int)
           handleType(int, null)
           handleIdentifier(x, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -935,7 +935,7 @@ beginCompilationUnit(int)
           handleType(int, null)
           handleIdentifier(x, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -989,7 +989,7 @@ beginCompilationUnit(int)
           handleType(int, null)
           handleIdentifier(x, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)
@@ -1043,7 +1043,7 @@ beginCompilationUnit(int)
           handleType(int, null)
           handleIdentifier(x, formalParameterDeclaration)
           handleFormalParameterWithoutValue())
-        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+        endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
       endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
       handleAsyncModifier(null, null)
       beginBlockFunctionBody({)

pkg/front_end/parser_testcases/general/built_in_identifier_top_level_methods.dart.intertwined.expect

@@ -21,7 +21,7 @@ parseUnit(int)
           parseFormalParameters(abstract, MemberKind.TopLevelMethod)
             parseFormalParametersRest((, MemberKind.TopLevelMethod)
               listener: beginFormalParameters((, MemberKind.TopLevelMethod)
-              parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+              parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
                 parseMetadataStar(()
                   listener: beginMetadataStar(int)
                   listener: endMetadataStar(0)
@@ -32,7 +32,7 @@ parseUnit(int)
                 ensureIdentifier(int, formalParameterDeclaration)
                   listener: handleIdentifier(x, formalParameterDeclaration)
                 listener: handleFormalParameterWithoutValue())
-                listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+                listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
               listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
         parseAsyncModifierOpt())
           listener: handleAsyncModifier(null, null)
@@ -154,7 +154,7 @@ parseUnit(int)
           parseFormalParameters(as, MemberKind.TopLevelMethod)
             parseFormalParametersRest((, MemberKind.TopLevelMethod)
               listener: beginFormalParameters((, MemberKind.TopLevelMethod)
-              parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+              parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
                 parseMetadataStar(()
                   listener: beginMetadataStar(int)
                   listener: endMetadataStar(0)
@@ -165,7 +165,7 @@ parseUnit(int)
                 ensureIdentifier(int, formalParameterDeclaration)
                   listener: handleIdentifier(x, formalParameterDeclaration)
                 listener: handleFormalParameterWithoutValue())
-                listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+                listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
               listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
         parseAsyncModifierOpt())
           listener: handleAsyncModifier(null, null)
@@ -287,7 +287,7 @@ parseUnit(int)
           parseFormalParameters(covariant, MemberKind.TopLevelMethod)
             parseFormalParametersRest((, MemberKind.TopLevelMethod)
               listener: beginFormalParameters((, MemberKind.TopLevelMethod)
-              parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+              parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
                 parseMetadataStar(()
                   listener: beginMetadataStar(int)
                   listener: endMetadataStar(0)
@@ -298,7 +298,7 @@ parseUnit(int)
                 ensureIdentifier(int, formalParameterDeclaration)
                   listener: handleIdentifier(x, formalParameterDeclaration)
                 listener: handleFormalParameterWithoutValue())
-                listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+                listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
               listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
         parseAsyncModifierOpt())
           listener: handleAsyncModifier(null, null)
@@ -420,7 +420,7 @@ parseUnit(int)
           parseFormalParameters(deferred, MemberKind.TopLevelMethod)
             parseFormalParametersRest((, MemberKind.TopLevelMethod)
               listener: beginFormalParameters((, MemberKind.TopLevelMethod)
-              parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+              parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
                 parseMetadataStar(()
                   listener: beginMetadataStar(int)
                   listener: endMetadataStar(0)
@@ -431,7 +431,7 @@ parseUnit(int)
                 ensureIdentifier(int, formalParameterDeclaration)
                   listener: handleIdentifier(x, formalParameterDeclaration)
                 listener: handleFormalParameterWithoutValue())
-                listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+                listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
               listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
         parseAsyncModifierOpt())
           listener: handleAsyncModifier(null, null)
@@ -553,7 +553,7 @@ parseUnit(int)
           parseFormalParameters(dynamic, MemberKind.TopLevelMethod)
             parseFormalParametersRest((, MemberKind.TopLevelMethod)
               listener: beginFormalParameters((, MemberKind.TopLevelMethod)
-              parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+              parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
                 parseMetadataStar(()
                   listener: beginMetadataStar(int)
                   listener: endMetadataStar(0)
@@ -564,7 +564,7 @@ parseUnit(int)
                 ensureIdentifier(int, formalParameterDeclaration)
                   listener: handleIdentifier(x, formalParameterDeclaration)
                 listener: handleFormalParameterWithoutValue())
-                listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+                listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
               listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
         parseAsyncModifierOpt())
           listener: handleAsyncModifier(null, null)
@@ -686,7 +686,7 @@ parseUnit(int)
           parseFormalParameters(export, MemberKind.TopLevelMethod)
             parseFormalParametersRest((, MemberKind.TopLevelMethod)
               listener: beginFormalParameters((, MemberKind.TopLevelMethod)
-              parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+              parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
                 parseMetadataStar(()
                   listener: beginMetadataStar(int)
                   listener: endMetadataStar(0)
@@ -697,7 +697,7 @@ parseUnit(int)
                 ensureIdentifier(int, formalParameterDeclaration)
                   listener: handleIdentifier(x, formalParameterDeclaration)
                 listener: handleFormalParameterWithoutValue())
-                listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+                listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
               listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
         parseAsyncModifierOpt())
           listener: handleAsyncModifier(null, null)
@@ -819,7 +819,7 @@ parseUnit(int)
           parseFormalParameters(external, MemberKind.TopLevelMethod)
             parseFormalParametersRest((, MemberKind.TopLevelMethod)
               listener: beginFormalParameters((, MemberKind.TopLevelMethod)
-              parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+              parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
                 parseMetadataStar(()
                   listener: beginMetadataStar(int)
                   listener: endMetadataStar(0)
@@ -830,7 +830,7 @@ parseUnit(int)
                 ensureIdentifier(int, formalParameterDeclaration)
                   listener: handleIdentifier(x, formalParameterDeclaration)
                 listener: handleFormalParameterWithoutValue())
-                listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+                listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
               listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
         parseAsyncModifierOpt())
           listener: handleAsyncModifier(null, null)
@@ -952,7 +952,7 @@ parseUnit(int)
           parseFormalParameters(factory, MemberKind.TopLevelMethod)
             parseFormalParametersRest((, MemberKind.TopLevelMethod)
               listener: beginFormalParameters((, MemberKind.TopLevelMethod)
-              parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+              parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
                 parseMetadataStar(()
                   listener: beginMetadataStar(int)
                   listener: endMetadataStar(0)
@@ -963,7 +963,7 @@ parseUnit(int)
                 ensureIdentifier(int, formalParameterDeclaration)
                   listener: handleIdentifier(x, formalParameterDeclaration)
                 listener: handleFormalParameterWithoutValue())
-                listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+                listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
               listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
         parseAsyncModifierOpt())
           listener: handleAsyncModifier(null, null)
@@ -1085,7 +1085,7 @@ parseUnit(int)
           parseFormalParameters(Function, MemberKind.TopLevelMethod)
             parseFormalParametersRest((, MemberKind.TopLevelMethod)
               listener: beginFormalParameters((, MemberKind.TopLevelMethod)
-              parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+              parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
                 parseMetadataStar(()
                   listener: beginMetadataStar(int)
                   listener: endMetadataStar(0)
@@ -1096,7 +1096,7 @@ parseUnit(int)
                 ensureIdentifier(int, formalParameterDeclaration)
                   listener: handleIdentifier(x, formalParameterDeclaration)
                 listener: handleFormalParameterWithoutValue())
-                listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+                listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
               listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
         parseAsyncModifierOpt())
           listener: handleAsyncModifier(null, null)
@@ -1218,7 +1218,7 @@ parseUnit(int)
           parseFormalParameters(get, MemberKind.TopLevelMethod)
             parseFormalParametersRest((, MemberKind.TopLevelMethod)
               listener: beginFormalParameters((, MemberKind.TopLevelMethod)
-              parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+              parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
                 parseMetadataStar(()
                   listener: beginMetadataStar(int)
                   listener: endMetadataStar(0)
@@ -1229,7 +1229,7 @@ parseUnit(int)
                 ensureIdentifier(int, formalParameterDeclaration)
                   listener: handleIdentifier(x, formalParameterDeclaration)
                 listener: handleFormalParameterWithoutValue())
-                listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+                listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
               listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
         parseAsyncModifierOpt())
           listener: handleAsyncModifier(null, null)
@@ -1351,7 +1351,7 @@ parseUnit(int)
           parseFormalParameters(implements, MemberKind.TopLevelMethod)
             parseFormalParametersRest((, MemberKind.TopLevelMethod)
               listener: beginFormalParameters((, MemberKind.TopLevelMethod)
-              parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+              parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
                 parseMetadataStar(()
                   listener: beginMetadataStar(int)
                   listener: endMetadataStar(0)
@@ -1362,7 +1362,7 @@ parseUnit(int)
                 ensureIdentifier(int, formalParameterDeclaration)
                   listener: handleIdentifier(x, formalParameterDeclaration)
                 listener: handleFormalParameterWithoutValue())
-                listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+                listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
               listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
         parseAsyncModifierOpt())
           listener: handleAsyncModifier(null, null)
@@ -1484,7 +1484,7 @@ parseUnit(int)
           parseFormalParameters(import, MemberKind.TopLevelMethod)
             parseFormalParametersRest((, MemberKind.TopLevelMethod)
               listener: beginFormalParameters((, MemberKind.TopLevelMethod)
-              parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+              parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
                 parseMetadataStar(()
                   listener: beginMetadataStar(int)
                   listener: endMetadataStar(0)
@@ -1495,7 +1495,7 @@ parseUnit(int)
                 ensureIdentifier(int, formalParameterDeclaration)
                   listener: handleIdentifier(x, formalParameterDeclaration)
                 listener: handleFormalParameterWithoutValue())
-                listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+                listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
               listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
         parseAsyncModifierOpt())
           listener: handleAsyncModifier(null, null)
@@ -1617,7 +1617,7 @@ parseUnit(int)
           parseFormalParameters(interface, MemberKind.TopLevelMethod)
             parseFormalParametersRest((, MemberKind.TopLevelMethod)
               listener: beginFormalParameters((, MemberKind.TopLevelMethod)
-              parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+              parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
                 parseMetadataStar(()
                   listener: beginMetadataStar(int)
                   listener: endMetadataStar(0)
@@ -1628,7 +1628,7 @@ parseUnit(int)
                 ensureIdentifier(int, formalParameterDeclaration)
                   listener: handleIdentifier(x, formalParameterDeclaration)
                 listener: handleFormalParameterWithoutValue())
-                listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+                listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
               listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
         parseAsyncModifierOpt())
           listener: handleAsyncModifier(null, null)
@@ -1750,7 +1750,7 @@ parseUnit(int)
           parseFormalParameters(library, MemberKind.TopLevelMethod)
             parseFormalParametersRest((, MemberKind.TopLevelMethod)
               listener: beginFormalParameters((, MemberKind.TopLevelMethod)
-              parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+              parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
                 parseMetadataStar(()
                   listener: beginMetadataStar(int)
                   listener: endMetadataStar(0)
@@ -1761,7 +1761,7 @@ parseUnit(int)
                 ensureIdentifier(int, formalParameterDeclaration)
                   listener: handleIdentifier(x, formalParameterDeclaration)
                 listener: handleFormalParameterWithoutValue())
-                listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+                listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
               listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
         parseAsyncModifierOpt())
           listener: handleAsyncModifier(null, null)
@@ -1883,7 +1883,7 @@ parseUnit(int)
           parseFormalParameters(operator, MemberKind.TopLevelMethod)
             parseFormalParametersRest((, MemberKind.TopLevelMethod)
               listener: beginFormalParameters((, MemberKind.TopLevelMethod)
-              parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+              parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
                 parseMetadataStar(()
                   listener: beginMetadataStar(int)
                   listener: endMetadataStar(0)
@@ -1894,7 +1894,7 @@ parseUnit(int)
                 ensureIdentifier(int, formalParameterDeclaration)
                   listener: handleIdentifier(x, formalParameterDeclaration)
                 listener: handleFormalParameterWithoutValue())
-                listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+                listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
               listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
         parseAsyncModifierOpt())
           listener: handleAsyncModifier(null, null)
@@ -2016,7 +2016,7 @@ parseUnit(int)
           parseFormalParameters(mixin, MemberKind.TopLevelMethod)
             parseFormalParametersRest((, MemberKind.TopLevelMethod)
               listener: beginFormalParameters((, MemberKind.TopLevelMethod)
-              parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+              parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
                 parseMetadataStar(()
                   listener: beginMetadataStar(int)
                   listener: endMetadataStar(0)
@@ -2027,7 +2027,7 @@ parseUnit(int)
                 ensureIdentifier(int, formalParameterDeclaration)
                   listener: handleIdentifier(x, formalParameterDeclaration)
                 listener: handleFormalParameterWithoutValue())
-                listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+                listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
               listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
         parseAsyncModifierOpt())
           listener: handleAsyncModifier(null, null)
@@ -2149,7 +2149,7 @@ parseUnit(int)
           parseFormalParameters(part, MemberKind.TopLevelMethod)
             parseFormalParametersRest((, MemberKind.TopLevelMethod)
               listener: beginFormalParameters((, MemberKind.TopLevelMethod)
-              parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+              parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
                 parseMetadataStar(()
                   listener: beginMetadataStar(int)
                   listener: endMetadataStar(0)
@@ -2160,7 +2160,7 @@ parseUnit(int)
                 ensureIdentifier(int, formalParameterDeclaration)
                   listener: handleIdentifier(x, formalParameterDeclaration)
                 listener: handleFormalParameterWithoutValue())
-                listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+                listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
               listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
         parseAsyncModifierOpt())
           listener: handleAsyncModifier(null, null)
@@ -2282,7 +2282,7 @@ parseUnit(int)
           parseFormalParameters(set, MemberKind.TopLevelMethod)
             parseFormalParametersRest((, MemberKind.TopLevelMethod)
               listener: beginFormalParameters((, MemberKind.TopLevelMethod)
-              parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+              parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
                 parseMetadataStar(()
                   listener: beginMetadataStar(int)
                   listener: endMetadataStar(0)
@@ -2293,7 +2293,7 @@ parseUnit(int)
                 ensureIdentifier(int, formalParameterDeclaration)
                   listener: handleIdentifier(x, formalParameterDeclaration)
                 listener: handleFormalParameterWithoutValue())
-                listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+                listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
               listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
         parseAsyncModifierOpt())
           listener: handleAsyncModifier(null, null)
@@ -2415,7 +2415,7 @@ parseUnit(int)
           parseFormalParameters(static, MemberKind.TopLevelMethod)
             parseFormalParametersRest((, MemberKind.TopLevelMethod)
               listener: beginFormalParameters((, MemberKind.TopLevelMethod)
-              parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+              parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
                 parseMetadataStar(()
                   listener: beginMetadataStar(int)
                   listener: endMetadataStar(0)
@@ -2426,7 +2426,7 @@ parseUnit(int)
                 ensureIdentifier(int, formalParameterDeclaration)
                   listener: handleIdentifier(x, formalParameterDeclaration)
                 listener: handleFormalParameterWithoutValue())
-                listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+                listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
               listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
         parseAsyncModifierOpt())
           listener: handleAsyncModifier(null, null)
@@ -2548,7 +2548,7 @@ parseUnit(int)
           parseFormalParameters(typedef, MemberKind.TopLevelMethod)
             parseFormalParametersRest((, MemberKind.TopLevelMethod)
               listener: beginFormalParameters((, MemberKind.TopLevelMethod)
-              parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+              parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
                 parseMetadataStar(()
                   listener: beginMetadataStar(int)
                   listener: endMetadataStar(0)
@@ -2559,7 +2559,7 @@ parseUnit(int)
                 ensureIdentifier(int, formalParameterDeclaration)
                   listener: handleIdentifier(x, formalParameterDeclaration)
                 listener: handleFormalParameterWithoutValue())
-                listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.mandatory, MemberKind.TopLevelMethod)
+                listener: endFormalParameter(null, null, null, x, null, null, FormalParameterKind.requiredPositional, MemberKind.TopLevelMethod)
               listener: endFormalParameters(1, (, ), MemberKind.TopLevelMethod)
         parseAsyncModifierOpt())
           listener: handleAsyncModifier(null, null)

pkg/front_end/parser_testcases/general/call_on_after_try_block.dart.expect

@@ -22,7 +22,7 @@ beginCompilationUnit(void)
                 handleNoType(()
                 handleIdentifier(e, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, e, null, null, FormalParameterKind.mandatory, MemberKind.Catch)
+              endFormalParameter(null, null, null, e, null, null, FormalParameterKind.requiredPositional, MemberKind.Catch)
             endFormalParameters(1, (, ), MemberKind.Catch)
           endCatchClause({)
           beginBlock({, BlockKind(catch clause))

pkg/front_end/parser_testcases/general/call_on_after_try_block.dart.intertwined.expect

@@ -44,7 +44,7 @@ parseUnit(void)
                 parseFormalParameters(catch, MemberKind.Catch)
                   parseFormalParametersRest((, MemberKind.Catch)
                     listener: beginFormalParameters((, MemberKind.Catch)
-                    parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.Catch)
+                    parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.Catch)
                       parseMetadataStar(()
                         listener: beginMetadataStar(e)
                         listener: endMetadataStar(0)
@@ -53,7 +53,7 @@ parseUnit(void)
                       ensureIdentifier((, formalParameterDeclaration)
                         listener: handleIdentifier(e, formalParameterDeclaration)
                       listener: handleFormalParameterWithoutValue())
-                      listener: endFormalParameter(null, null, null, e, null, null, FormalParameterKind.mandatory, MemberKind.Catch)
+                      listener: endFormalParameter(null, null, null, e, null, null, FormalParameterKind.requiredPositional, MemberKind.Catch)
                     listener: endFormalParameters(1, (, ), MemberKind.Catch)
                 listener: endCatchClause({)
                 parseBlock(), BlockKind(catch clause))

pkg/front_end/parser_testcases/general/call_on_after_try_block2.dart.expect

@@ -22,7 +22,7 @@ beginCompilationUnit(void)
                 handleNoType(()
                 handleIdentifier(e, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, e, null, null, FormalParameterKind.mandatory, MemberKind.Catch)
+              endFormalParameter(null, null, null, e, null, null, FormalParameterKind.requiredPositional, MemberKind.Catch)
             endFormalParameters(1, (, ), MemberKind.Catch)
           endCatchClause({)
           beginBlock({, BlockKind(catch clause))
@@ -54,7 +54,7 @@ beginCompilationUnit(void)
               handleNoType(()
               handleIdentifier(e, formalParameterDeclaration)
               handleFormalParameterWithoutValue())
-            endFormalParameter(null, null, null, e, null, null, FormalParameterKind.mandatory, MemberKind.Local)
+            endFormalParameter(null, null, null, e, null, null, FormalParameterKind.requiredPositional, MemberKind.Local)
           endFormalParameters(1, (, ), MemberKind.Local)
           handleNoInitializers()
           handleAsyncModifier(null, null)

pkg/front_end/parser_testcases/general/call_on_after_try_block2.dart.intertwined.expect

@@ -44,7 +44,7 @@ parseUnit(void)
                 parseFormalParameters(catch, MemberKind.Catch)
                   parseFormalParametersRest((, MemberKind.Catch)
                     listener: beginFormalParameters((, MemberKind.Catch)
-                    parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.Catch)
+                    parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.Catch)
                       parseMetadataStar(()
                         listener: beginMetadataStar(e)
                         listener: endMetadataStar(0)
@@ -53,7 +53,7 @@ parseUnit(void)
                       ensureIdentifier((, formalParameterDeclaration)
                         listener: handleIdentifier(e, formalParameterDeclaration)
                       listener: handleFormalParameterWithoutValue())
-                      listener: endFormalParameter(null, null, null, e, null, null, FormalParameterKind.mandatory, MemberKind.Catch)
+                      listener: endFormalParameter(null, null, null, e, null, null, FormalParameterKind.requiredPositional, MemberKind.Catch)
                     listener: endFormalParameters(1, (, ), MemberKind.Catch)
                 listener: endCatchClause({)
                 parseBlock(), BlockKind(catch clause))
@@ -104,7 +104,7 @@ parseUnit(void)
                     parseFormalParametersRequiredOpt(on, MemberKind.Local)
                       parseFormalParametersRest((, MemberKind.Local)
                         listener: beginFormalParameters((, MemberKind.Local)
-                        parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.Local)
+                        parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.Local)
                           parseMetadataStar(()
                             listener: beginMetadataStar(e)
                             listener: endMetadataStar(0)
@@ -113,7 +113,7 @@ parseUnit(void)
                           ensureIdentifier((, formalParameterDeclaration)
                             listener: handleIdentifier(e, formalParameterDeclaration)
                           listener: handleFormalParameterWithoutValue())
-                          listener: endFormalParameter(null, null, null, e, null, null, FormalParameterKind.mandatory, MemberKind.Local)
+                          listener: endFormalParameter(null, null, null, e, null, null, FormalParameterKind.requiredPositional, MemberKind.Local)
                         listener: endFormalParameters(1, (, ), MemberKind.Local)
                     parseInitializersOpt())
                       listener: handleNoInitializers()

pkg/front_end/parser_testcases/general/call_on_after_try_block2_prime.dart.expect

@@ -22,7 +22,7 @@ beginCompilationUnit(void)
                 handleNoType(()
                 handleIdentifier(e, formalParameterDeclaration)
                 handleFormalParameterWithoutValue())
-              endFormalParameter(null, null, null, e, null, null, FormalParameterKind.mandatory, MemberKind.Catch)
+              endFormalParameter(null, null, null, e, null, null, FormalParameterKind.requiredPositional, MemberKind.Catch)
             endFormalParameters(1, (, ), MemberKind.Catch)
           endCatchClause({)
           beginBlock({, BlockKind(catch clause))
@@ -54,7 +54,7 @@ beginCompilationUnit(void)
               handleNoType(()
               handleIdentifier(e, formalParameterDeclaration)
               handleFormalParameterWithoutValue())
-            endFormalParameter(null, null, null, e, null, null, FormalParameterKind.mandatory, MemberKind.Local)
+            endFormalParameter(null, null, null, e, null, null, FormalParameterKind.requiredPositional, MemberKind.Local)
           endFormalParameters(1, (, ), MemberKind.Local)
           handleNoInitializers()
           handleAsyncModifier(null, null)

pkg/front_end/parser_testcases/general/call_on_after_try_block2_prime.dart.intertwined.expect

@@ -44,7 +44,7 @@ parseUnit(void)
                 parseFormalParameters(catch, MemberKind.Catch)
                   parseFormalParametersRest((, MemberKind.Catch)
                     listener: beginFormalParameters((, MemberKind.Catch)
-                    parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.Catch)
+                    parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.Catch)
                       parseMetadataStar(()
                         listener: beginMetadataStar(e)
                         listener: endMetadataStar(0)
@@ -53,7 +53,7 @@ parseUnit(void)
                       ensureIdentifier((, formalParameterDeclaration)
                         listener: handleIdentifier(e, formalParameterDeclaration)
                       listener: handleFormalParameterWithoutValue())
-                      listener: endFormalParameter(null, null, null, e, null, null, FormalParameterKind.mandatory, MemberKind.Catch)
+                      listener: endFormalParameter(null, null, null, e, null, null, FormalParameterKind.requiredPositional, MemberKind.Catch)
                     listener: endFormalParameters(1, (, ), MemberKind.Catch)
                 listener: endCatchClause({)
                 parseBlock(), BlockKind(catch clause))
@@ -102,7 +102,7 @@ parseUnit(void)
                   parseFormalParametersRequiredOpt(onX, MemberKind.Local)
                     parseFormalParametersRest((, MemberKind.Local)
                       listener: beginFormalParameters((, MemberKind.Local)
-                      parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.Local)
+                      parseFormalParameter((, FormalParameterKind.requiredPositional, MemberKind.Local)
                         parseMetadataStar(()
                           listener: beginMetadataStar(e)
                           listener: endMetadataStar(0)
@@ -111,7 +111,7 @@ parseUnit(void)
                         ensureIdentifier((, formalParameterDeclaration)
                           listener: handleIdentifier(e, formalParameterDeclaration)
                         listener: handleFormalParameterWithoutValue())
-                        listener: endFormalParameter(null, null, null, e, null, null, FormalParameterKind.mandatory, MemberKind.Local)
+                        listener: endFormalParameter(null, null, null, e, null, null, FormalParameterKind.requiredPositional, MemberKind.Local)
                       listener: endFormalParameters(1, (, ), MemberKind.Local)
                   parseInitializersOpt())
                     listener: handleNoInitializers()