Improve macro code formatting.

Change-Id: I3c9f1ddaf6b5562a10b767c2f5d7297a5ed655e7
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/210421
Reviewed-by: Brian Wilkerson <brianwilkerson@google.com>
Commit-Queue: Konstantin Shcheglov <scheglov@google.com>

pkg/analysis_server/test/analysis/notification_navigation_test.dart

@@ -805,7 +805,6 @@ void f(A a) {
     );
 
     var generatedContent = generatedFile.readAsStringSync();
-    // TODO(scheglov) Improve macro to be more formatted.
     expect(generatedContent, r'''
 import 'macro_annotations.dart';
 
@@ -813,12 +812,12 @@ class A {
   @observable
   int _foo = 0;
 
-int get foo => _foo;
+  int get foo => _foo;
 
-set foo(int val) {
-  print('Setting foo to ${val}');
-  _foo = val;
-}
+  set foo(int val) {
+    print('Setting foo to ${val}');
+    _foo = val;
+  }
 }
 
 void f(A a) {

pkg/analyzer/lib/src/dart/analysis/driver.dart

@@ -80,7 +80,7 @@ import 'package:meta/meta.dart';
 /// TODO(scheglov) Clean up the list of implicitly analyzed files.
 class AnalysisDriver implements AnalysisDriverGeneric {
   /// The version of data format, should be incremented on every format change.
-  static const int DATA_VERSION = 169;
+  static const int DATA_VERSION = 170;
 
   /// The number of exception contexts allowed to write. Once this field is
   /// zero, we stop writing any new exception contexts in this process.

pkg/analyzer/lib/src/macro/builders/data_class.dart

@@ -52,8 +52,9 @@ class HashCodeMacro implements ClassDeclarationMacro {
         .join(' ^ ');
     builder.addToClass(
       Declaration('''
-@override
-int get hashCode => $expression;'''),
+  @override
+  int get hashCode => $expression;
+'''),
     );
   }
 }
@@ -73,8 +74,9 @@ class ToStringMacro implements ClassDeclarationMacro {
     }).join(', ');
     builder.addToClass(
       Declaration('''
-@override
-String toString() => '${classElement.name}($fieldsCode)';'''),
+  @override
+  String toString() => '${classElement.name}($fieldsCode)';
+'''),
     );
   }
 }

pkg/analyzer/lib/src/macro/builders/observable.dart

@@ -33,15 +33,16 @@ class ObservableMacro implements FieldDeclarationMacro {
       var publicName = name.substring(1);
 
       var getter = Declaration(
-        '$typeCode get $publicName => $name;',
+        '  $typeCode get $publicName => $name;',
       );
       builder.addToClass(getter);
 
       var setter = Declaration('''
-set $publicName($typeCode val) {
-  print('Setting $publicName to \${val}');
-  $name = val;
-}''');
+  set $publicName($typeCode val) {
+    print('Setting $publicName to \${val}');
+    $name = val;
+  }
+''');
       builder.addToClass(setter);
     }
   }

pkg/analyzer/lib/src/macro/impl/macro.dart

@@ -114,7 +114,7 @@ class MacroGeneratedContent {
       return a.data.id - b.data.id;
     });
 
-    const classMemberCodePrefix = '\n';
+    const classMemberCodePrefix = '\n  ';
     const classMemberCodeSuffix = '\n';
     // TODO(scheglov) make it required?
     var generatedContent = linkingUnit.input.sourceContent!;

pkg/analyzer/lib/src/summary2/informative_data.dart

@@ -669,7 +669,7 @@ class InformativeDataApplier {
   ) {
     var macroGenerationDataList = unitElement.macroGenerationDataList;
     if (macroGenerationDataList != null) {
-      const classMemberCodePrefix = '\n';
+      const classMemberCodePrefix = '\n  ';
       const classMemberCodeSuffix = '\n';
       var generatedContent = unitInfoData.content;
       var shift = 0;

pkg/analyzer/test/src/summary/resynthesize_common.dart

@@ -21282,11 +21282,11 @@ library
           final b @88
             type: int?
         constructors
-          @92
+          @94
             parameters
-              requiredName final this.a @109
+              requiredName final this.a @111
                 type: int
-              optionalNamed final this.b @117
+              optionalNamed final this.b @119
                 type: int?
         accessors
           synthetic get a @-1
@@ -21300,7 +21300,7 @@ class A {
   final int a;
   final int? b;
 
-A({required this.a, this.b});
+  A({required this.a, this.b});
 }
 ''');
   }
@@ -21335,7 +21335,7 @@ library
             returnType: int
           synthetic get b @-1
             returnType: int
-          get hashCode @102
+          get hashCode @106
             metadata
               Annotation
                 atSign: @ @0
@@ -21352,8 +21352,8 @@ class A {
   final int a;
   final int b;
 
-@override
-int get hashCode => a.hashCode ^ b.hashCode;
+  @override
+  int get hashCode => a.hashCode ^ b.hashCode;
 }
 ''');
   }
@@ -21410,15 +21410,15 @@ library
         accessors
           synthetic get b @-1
             returnType: int
-          get hashCode @126
+          get hashCode @130
             metadata
               Annotation
-                atSign: @ @108
+                atSign: @ @110
                 element: dart:core::@getter::override
                 name: SimpleIdentifier
                   staticElement: dart:core::@getter::override
                   staticType: null
-                  token: override @109
+                  token: override @111
             returnType: int
     macroGeneratedContent
 import 'macro_annotations.dart';
@@ -21431,8 +21431,8 @@ class A {
 class B extends A {
   final int b;
 
-@override
-int get hashCode => b.hashCode ^ a.hashCode;
+  @override
+  int get hashCode => b.hashCode ^ a.hashCode;
 }
 ''');
   }
@@ -21479,11 +21479,11 @@ library
               requiredPositional __f @-1
                 type: int
             returnType: void
-          get f @80
+          get f @82
             returnType: int
-          set f @94
+          set f @98
             parameters
-              requiredPositional val @100
+              requiredPositional val @104
                 type: int
             returnType: void
     macroGeneratedContent
@@ -21492,12 +21492,12 @@ class A {
   @observable
   int _f = 0;
 
-int get f => _f;
+  int get f => _f;
 
-set f(int val) {
-  print('Setting f to ${val}');
-  _f = val;
-}
+  set f(int val) {
+    print('Setting f to ${val}');
+    _f = val;
+  }
 }
 ''');
   }
@@ -21547,11 +21547,11 @@ library
               requiredPositional __f @-1
                 type: T
             returnType: void
-          get f @75
+          get f @77
             returnType: T
-          set f @89
+          set f @93
             parameters
-              requiredPositional val @93
+              requiredPositional val @97
                 type: T
             returnType: void
     macroGeneratedContent
@@ -21560,12 +21560,12 @@ class A<T> {
   @observable
   T _f;
 
-T get f => _f;
+  T get f => _f;
 
-set f(T val) {
-  print('Setting f to ${val}');
-  _f = val;
-}
+  set f(T val) {
+    print('Setting f to ${val}');
+    _f = val;
+  }
 }
 ''');
   }
@@ -21611,15 +21611,15 @@ library
           synthetic get b @-1
             returnType: int
         methods
-          toString @101
+          toString @105
             metadata
               Annotation
-                atSign: @ @84
+                atSign: @ @86
                 element: dart:core::@getter::override
                 name: SimpleIdentifier
                   staticElement: dart:core::@getter::override
                   staticType: null
-                  token: override @85
+                  token: override @87
             returnType: String
     macroGeneratedContent
 import 'macro_annotations.dart';
@@ -21628,8 +21628,8 @@ class A {
   final int a;
   final int b;
 
-@override
-String toString() => 'A(a: $a, b: $b)';
+  @override
+  String toString() => 'A(a: $a, b: $b)';
 }
 ''');
   }