[cfe] Avoid synthesized locations for reporting conflict errors

Part of https://github.com/dart-lang/sdk/issues/47453

Change-Id: I51277f2c548b4632b9b9870b522f19a9e8c77498
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/239680
Reviewed-by: Johnni Winther <johnniwinther@google.com>
Commit-Queue: Chloe Stefantsova <cstefantsova@google.com>

pkg/_fe_analyzer_shared/lib/src/messages/codes_generated.dart

@@ -5641,6 +5641,33 @@ Message _withArgumentsInputFileNotFound(Uri uri_) {
       arguments: {'uri': uri_});
 }
 
+// DO NOT EDIT. THIS FILE IS GENERATED. SEE TOP OF FILE.
+const Template<
+    Message Function(
+        String
+            name)> templateInstanceAndSynthesizedStaticConflict = const Template<
+        Message Function(String name)>(
+    problemMessageTemplate:
+        r"""This instance member conflicts with the synthesized static member called '#name'.""",
+    withArguments: _withArgumentsInstanceAndSynthesizedStaticConflict);
+
+// DO NOT EDIT. THIS FILE IS GENERATED. SEE TOP OF FILE.
+const Code<Message Function(String name)>
+    codeInstanceAndSynthesizedStaticConflict =
+    const Code<Message Function(String name)>(
+        "InstanceAndSynthesizedStaticConflict",
+        analyzerCodes: <String>["CONFLICTING_STATIC_AND_INSTANCE"]);
+
+// DO NOT EDIT. THIS FILE IS GENERATED. SEE TOP OF FILE.
+Message _withArgumentsInstanceAndSynthesizedStaticConflict(String name) {
+  if (name.isEmpty) throw 'No name provided';
+  name = demangleMixinApplicationName(name);
+  return new Message(codeInstanceAndSynthesizedStaticConflict,
+      problemMessage:
+          """This instance member conflicts with the synthesized static member called '${name}'.""",
+      arguments: {'name': name});
+}
+
 // DO NOT EDIT. THIS FILE IS GENERATED. SEE TOP OF FILE.
 const Template<Message Function(int count, int count2)>
     templateInstantiationTooFewArguments =

pkg/front_end/lib/src/fasta/kernel/hierarchy/members_node.dart

@@ -37,6 +37,7 @@ import '../../messages.dart'
         templateCantInferTypeDueToNoCombinedSignature,
         templateDuplicatedDeclaration,
         templateDuplicatedDeclarationCause,
+        templateInstanceAndSynthesizedStaticConflict,
         templateMissingImplementationCause,
         templateMissingImplementationNotAbstract;
 import '../../names.dart' show noSuchMethodName;
@@ -531,12 +532,23 @@ class ClassMembersNodeBuilder {
         staticMember = b;
         instanceMember = a;
       }
-      classBuilder.libraryBuilder.addProblem(messageStaticAndInstanceConflict,
-          staticMember.charOffset, name.length, staticMember.fileUri,
-          context: <LocatedMessage>[
-            messageStaticAndInstanceConflictCause.withLocation(
-                instanceMember.fileUri, instanceMember.charOffset, name.length)
-          ]);
+      if (!staticMember.isSynthesized) {
+        classBuilder.libraryBuilder.addProblem(messageStaticAndInstanceConflict,
+            staticMember.charOffset, name.length, staticMember.fileUri,
+            context: <LocatedMessage>[
+              messageStaticAndInstanceConflictCause.withLocation(
+                  instanceMember.fileUri,
+                  instanceMember.charOffset,
+                  name.length)
+            ]);
+      } else {
+        classBuilder.libraryBuilder.addProblem(
+            templateInstanceAndSynthesizedStaticConflict
+                .withArguments(staticMember.name.text),
+            instanceMember.charOffset,
+            name.length,
+            instanceMember.fileUri);
+      }
     } else {
       // This message can be reported twice (when merging localMembers with
       // classSetters, or localSetters with classMembers). By ensuring that

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

@@ -284,7 +284,8 @@ class SourceEnumBuilder extends SourceClassBuilder {
         staticFieldNameScheme,
         fieldReference: valuesFieldReference,
         fieldGetterReference: valuesGetterReference,
-        fieldSetterReference: valuesSetterReference);
+        fieldSetterReference: valuesSetterReference,
+        isSynthesized: true);
     members["values"] = valuesBuilder;
 
     DeclaredSourceConstructorBuilder? synthesizedDefaultConstructorBuilder;

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

@@ -70,6 +70,8 @@ class SourceFieldBuilder extends SourceMemberBuilderImpl
   @override
   final bool isTopLevel;
 
+  final bool isSynthesized;
+
   SourceFieldBuilder(
       this.metadata,
       this.type,
@@ -88,7 +90,8 @@ class SourceFieldBuilder extends SourceMemberBuilderImpl
       Reference? lateIsSetSetterReference,
       Reference? lateGetterReference,
       Reference? lateSetterReference,
-      Token? constInitializerToken})
+      Token? constInitializerToken,
+      this.isSynthesized = false})
       : _constInitializerToken = constInitializerToken,
         super(libraryBuilder, charOffset) {
     bool isInstanceMember = fieldNameScheme.isInstanceMember;
@@ -757,6 +760,9 @@ class SourceFieldMember extends BuilderClassMember {
   @override
   bool get isProperty => true;
 
+  @override
+  bool get isSynthesized => memberBuilder.isSynthesized;
+
   @override
   bool isSameDeclaration(ClassMember other) {
     return other is SourceFieldMember && memberBuilder == other.memberBuilder;

pkg/front_end/messages.status

@@ -475,6 +475,7 @@ InitializerForStaticField/example: Fail
 InitializerOutsideConstructor/example: Fail
 InputFileNotFound/analyzerCode: Fail
 InputFileNotFound/example: Fail
+InstanceAndSynthesizedStaticConflict/example: Fail
 InstantiationNonGenericFunctionType/analyzerCode: Fail
 InstantiationTooFewArguments/analyzerCode: Fail
 InstantiationTooManyArguments/analyzerCode: Fail

pkg/front_end/messages.yaml

@@ -4597,6 +4597,10 @@ StaticAndInstanceConflictCause:
   problemMessage: "This is the instance member."
   severity: CONTEXT
 
+InstanceAndSynthesizedStaticConflict:
+  problemMessage: "This instance member conflicts with the synthesized static member called '#name'."
+  analyzerCode: CONFLICTING_STATIC_AND_INSTANCE
+
 FfiAbiSpecificIntegerInvalid:
   # Used by dart:ffi
   problemMessage: "Classes extending 'AbiSpecificInteger' must have exactly one const constructor, no other members, and no type arguments."

pkg/front_end/testcases/enhanced_enums/member_values_conflicts.dart

@@ -0,0 +1,12 @@
+// Copyright (c) 2022, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+enum E {
+  e1,
+  e2;
+
+  void set values(List<E> val) {} // Error.
+}
+
+main() {}

pkg/front_end/testcases/enhanced_enums/member_values_conflicts.dart.strong.expect

@@ -0,0 +1,40 @@
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/enhanced_enums/member_values_conflicts.dart:9:12: Error: This instance member conflicts with the synthesized static member called 'values'.
+//   void set values(List<E> val) {} // Error.
+//            ^^^^^^
+//
+import self as self;
+import "dart:core" as core;
+
+class E extends core::_Enum /*isEnum*/  {
+  static const field core::List<self::E> values = #C7;
+  static const field self::E e1 = #C3;
+  static const field self::E e2 = #C6;
+  const constructor •(core::int index, core::String name) → self::E
+    : super core::_Enum::•(index, name)
+    ;
+  method toString() → core::String
+    return "E.${this.{core::_Enum::_name}{core::String}}";
+  set values(core::List<self::E> val) → void {}
+}
+static method main() → dynamic {}
+
+constants  {
+  #C1 = 0
+  #C2 = "e1"
+  #C3 = self::E {index:#C1, _name:#C2}
+  #C4 = 1
+  #C5 = "e2"
+  #C6 = self::E {index:#C4, _name:#C5}
+  #C7 = <self::E>[#C3, #C6]
+}
+
+
+Constructor coverage from constants:
+org-dartlang-testcase:///member_values_conflicts.dart:
+- E. (from org-dartlang-testcase:///member_values_conflicts.dart:5:6)
+- _Enum. (from org-dartlang-sdk:///sdk/lib/core/enum.dart:103:9)
+- Object. (from org-dartlang-sdk:///sdk/lib/core/object.dart:25:9)

pkg/front_end/testcases/enhanced_enums/member_values_conflicts.dart.strong.transformed.expect

@@ -0,0 +1,40 @@
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/enhanced_enums/member_values_conflicts.dart:9:12: Error: This instance member conflicts with the synthesized static member called 'values'.
+//   void set values(List<E> val) {} // Error.
+//            ^^^^^^
+//
+import self as self;
+import "dart:core" as core;
+
+class E extends core::_Enum /*isEnum*/  {
+  static const field core::List<self::E> values = #C7;
+  static const field self::E e1 = #C3;
+  static const field self::E e2 = #C6;
+  const constructor •(core::int index, core::String name) → self::E
+    : super core::_Enum::•(index, name)
+    ;
+  method toString() → core::String
+    return "E.${this.{core::_Enum::_name}{core::String}}";
+  set values(core::List<self::E> val) → void {}
+}
+static method main() → dynamic {}
+
+constants  {
+  #C1 = 0
+  #C2 = "e1"
+  #C3 = self::E {index:#C1, _name:#C2}
+  #C4 = 1
+  #C5 = "e2"
+  #C6 = self::E {index:#C4, _name:#C5}
+  #C7 = <self::E>[#C3, #C6]
+}
+
+
+Constructor coverage from constants:
+org-dartlang-testcase:///member_values_conflicts.dart:
+- E. (from org-dartlang-testcase:///member_values_conflicts.dart:5:6)
+- _Enum. (from org-dartlang-sdk:///sdk/lib/core/enum.dart:103:9)
+- Object. (from org-dartlang-sdk:///sdk/lib/core/object.dart:25:9)

pkg/front_end/testcases/enhanced_enums/member_values_conflicts.dart.textual_outline.expect

@@ -0,0 +1,8 @@
+enum E {
+  e1,
+  e2;
+
+  void set values(List<E> val) {}
+}
+
+main() {}

pkg/front_end/testcases/enhanced_enums/member_values_conflicts.dart.textual_outline_modelled.expect

@@ -0,0 +1,8 @@
+enum E {
+  e1,
+  e2;
+
+  void set values(List<E> val) {}
+}
+
+main() {}

pkg/front_end/testcases/enhanced_enums/member_values_conflicts.dart.weak.expect

@@ -0,0 +1,40 @@
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/enhanced_enums/member_values_conflicts.dart:9:12: Error: This instance member conflicts with the synthesized static member called 'values'.
+//   void set values(List<E> val) {} // Error.
+//            ^^^^^^
+//
+import self as self;
+import "dart:core" as core;
+
+class E extends core::_Enum /*isEnum*/  {
+  static const field core::List<self::E> values = #C7;
+  static const field self::E e1 = #C3;
+  static const field self::E e2 = #C6;
+  const constructor •(core::int index, core::String name) → self::E
+    : super core::_Enum::•(index, name)
+    ;
+  method toString() → core::String
+    return "E.${this.{core::_Enum::_name}{core::String}}";
+  set values(core::List<self::E> val) → void {}
+}
+static method main() → dynamic {}
+
+constants  {
+  #C1 = 0
+  #C2 = "e1"
+  #C3 = self::E {index:#C1, _name:#C2}
+  #C4 = 1
+  #C5 = "e2"
+  #C6 = self::E {index:#C4, _name:#C5}
+  #C7 = <self::E*>[#C3, #C6]
+}
+
+
+Constructor coverage from constants:
+org-dartlang-testcase:///member_values_conflicts.dart:
+- E. (from org-dartlang-testcase:///member_values_conflicts.dart:5:6)
+- _Enum. (from org-dartlang-sdk:///sdk/lib/core/enum.dart:103:9)
+- Object. (from org-dartlang-sdk:///sdk/lib/core/object.dart:25:9)

pkg/front_end/testcases/enhanced_enums/member_values_conflicts.dart.weak.modular.expect

@@ -0,0 +1,40 @@
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/enhanced_enums/member_values_conflicts.dart:9:12: Error: This instance member conflicts with the synthesized static member called 'values'.
+//   void set values(List<E> val) {} // Error.
+//            ^^^^^^
+//
+import self as self;
+import "dart:core" as core;
+
+class E extends core::_Enum /*isEnum*/  {
+  static const field core::List<self::E> values = #C7;
+  static const field self::E e1 = #C3;
+  static const field self::E e2 = #C6;
+  const constructor •(core::int index, core::String name) → self::E
+    : super core::_Enum::•(index, name)
+    ;
+  method toString() → core::String
+    return "E.${this.{core::_Enum::_name}{core::String}}";
+  set values(core::List<self::E> val) → void {}
+}
+static method main() → dynamic {}
+
+constants  {
+  #C1 = 0
+  #C2 = "e1"
+  #C3 = self::E {index:#C1, _name:#C2}
+  #C4 = 1
+  #C5 = "e2"
+  #C6 = self::E {index:#C4, _name:#C5}
+  #C7 = <self::E*>[#C3, #C6]
+}
+
+
+Constructor coverage from constants:
+org-dartlang-testcase:///member_values_conflicts.dart:
+- E. (from org-dartlang-testcase:///member_values_conflicts.dart:5:6)
+- _Enum. (from org-dartlang-sdk:///sdk/lib/core/enum.dart:103:9)
+- Object. (from org-dartlang-sdk:///sdk/lib/core/object.dart:25:9)

pkg/front_end/testcases/enhanced_enums/member_values_conflicts.dart.weak.outline.expect

@@ -0,0 +1,32 @@
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/enhanced_enums/member_values_conflicts.dart:9:12: Error: This instance member conflicts with the synthesized static member called 'values'.
+//   void set values(List<E> val) {} // Error.
+//            ^^^^^^
+//
+import self as self;
+import "dart:core" as core;
+
+class E extends core::_Enum /*isEnum*/  {
+  static const field core::List<self::E> values = const <self::E>[self::E::e1, self::E::e2];
+  static const field self::E e1 = const self::E::•(0, "e1");
+  static const field self::E e2 = const self::E::•(1, "e2");
+  const constructor •(core::int index, core::String name) → self::E
+    : super core::_Enum::•(index, name)
+    ;
+  method toString() → core::String
+    return "E.${this.{core::_Enum::_name}{core::String}}";
+  set values(core::List<self::E> val) → void
+    ;
+}
+static method main() → dynamic
+  ;
+
+
+Extra constant evaluation status:
+Evaluated: ListLiteral @ org-dartlang-testcase:///member_values_conflicts.dart:5:6 -> ListConstant(const <E*>[const E{_Enum.index: 0, _Enum._name: "e1"}, const E{_Enum.index: 1, _Enum._name: "e2"}])
+Evaluated: ConstructorInvocation @ org-dartlang-testcase:///member_values_conflicts.dart:6:3 -> InstanceConstant(const E{_Enum.index: 0, _Enum._name: "e1"})
+Evaluated: ConstructorInvocation @ org-dartlang-testcase:///member_values_conflicts.dart:7:3 -> InstanceConstant(const E{_Enum.index: 1, _Enum._name: "e2"})
+Extra constant evaluation: evaluated: 8, effectively constant: 3

pkg/front_end/testcases/enhanced_enums/member_values_conflicts.dart.weak.transformed.expect

@@ -0,0 +1,40 @@
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/enhanced_enums/member_values_conflicts.dart:9:12: Error: This instance member conflicts with the synthesized static member called 'values'.
+//   void set values(List<E> val) {} // Error.
+//            ^^^^^^
+//
+import self as self;
+import "dart:core" as core;
+
+class E extends core::_Enum /*isEnum*/  {
+  static const field core::List<self::E> values = #C7;
+  static const field self::E e1 = #C3;
+  static const field self::E e2 = #C6;
+  const constructor •(core::int index, core::String name) → self::E
+    : super core::_Enum::•(index, name)
+    ;
+  method toString() → core::String
+    return "E.${this.{core::_Enum::_name}{core::String}}";
+  set values(core::List<self::E> val) → void {}
+}
+static method main() → dynamic {}
+
+constants  {
+  #C1 = 0
+  #C2 = "e1"
+  #C3 = self::E {index:#C1, _name:#C2}
+  #C4 = 1
+  #C5 = "e2"
+  #C6 = self::E {index:#C4, _name:#C5}
+  #C7 = <self::E*>[#C3, #C6]
+}
+
+
+Constructor coverage from constants:
+org-dartlang-testcase:///member_values_conflicts.dart:
+- E. (from org-dartlang-testcase:///member_values_conflicts.dart:5:6)
+- _Enum. (from org-dartlang-sdk:///sdk/lib/core/enum.dart:103:9)
+- Object. (from org-dartlang-sdk:///sdk/lib/core/object.dart:25:9)