Migrate to analyzer Element2 APIs (#763)

Author: davidmorgan

analysis_options.yaml

@@ -5,9 +5,6 @@ analyzer:
     strict-casts: true
     strict-inference: true
     strict-raw-types: true
-  errors:
-    # analyzer deprecations
-    deprecated_member_use: ignore
 
 linter:
   rules:

example/lib/src/member_count_library_generator.dart

@@ -13,7 +13,7 @@ class MemberCountLibraryGenerator extends Generator {
     final topLevelVarCount = topLevelNumVariables(library).length;
 
     return '''
-// Source library: ${library.element.source.uri}
+// Source library: ${library.element.uri}
 const topLevelNumVarCount = $topLevelVarCount;
 ''';
   }

example/lib/src/multiplier_generator.dart

@@ -2,7 +2,7 @@
 // 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.
 
-import 'package:analyzer/dart/element/element.dart';
+import 'package:analyzer/dart/element/element2.dart';
 import 'package:build/build.dart';
 import 'package:source_gen/source_gen.dart';
 
@@ -11,12 +11,12 @@ import '../annotations.dart';
 class MultiplierGenerator extends GeneratorForAnnotation<Multiplier> {
   @override
   String generateForAnnotatedElement(
-    Element element,
+    Element2 element,
     ConstantReader annotation,
     BuildStep buildStep,
   ) {
     final numValue = annotation.read('value').literalValue as num;
 
-    return 'num ${element.name}Multiplied() => ${element.name} * $numValue;';
+    return 'num ${element.name3}Multiplied() => ${element.name3} * $numValue;';
   }
 }

example/lib/src/property_product_generator.dart

@@ -12,7 +12,7 @@ class PropertyProductGenerator extends Generator {
   String generate(LibraryReader library, BuildStep buildStep) {
     final productNames = topLevelNumVariables(
       library,
-    ).map((element) => element.name).join(' * ');
+    ).map((element) => element.name3).join(' * ');
 
     return '''
 num allProduct() => $productNames;

example/lib/src/property_sum_generator.dart

@@ -12,7 +12,7 @@ class PropertySumGenerator extends Generator {
   String generate(LibraryReader library, BuildStep buildStep) {
     final sumNames = topLevelNumVariables(
       library,
-    ).map((element) => element.name).join(' + ');
+    ).map((element) => element.name3).join(' + ');
 
     return '''
 num allSum() => $sumNames;

example/lib/src/utils.dart

@@ -2,13 +2,13 @@
 // 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.
 
-import 'package:analyzer/dart/element/element.dart';
+import 'package:analyzer/dart/element/element2.dart';
 import 'package:source_gen/source_gen.dart';
 
-/// Returns all [TopLevelVariableElement] members in [reader]'s library that
+/// Returns all [TopLevelVariableElement2] members in [reader]'s library that
 /// have a type of [num].
-Iterable<TopLevelVariableElement> topLevelNumVariables(LibraryReader reader) =>
-    reader.allElements.whereType<TopLevelVariableElement>().where(
+Iterable<TopLevelVariableElement2> topLevelNumVariables(LibraryReader reader) =>
+    reader.allElements.whereType<TopLevelVariableElement2>().where(
       (element) =>
           element.type.isDartCoreNum ||
           element.type.isDartCoreInt ||

example/pubspec.yaml

@@ -7,7 +7,7 @@ environment:
 
 dependencies:
   analyzer: '>=6.9.0 <8.0.0'
-  build: ^2.0.0
+  build: ^3.0.0-dev
   source_gen: any
 
 dev_dependencies:

source_gen/CHANGELOG.md

@@ -1,5 +1,9 @@
-## 2.0.1-wip
+## 3.0.0-dev
 
+- **Breaking Change**: use the new `element2` APIs in `analyzer`. Builders that
+  do resolution need to switch to the new API, see
+  https://github.com/dart-lang/sdk/blob/main/pkg/analyzer/doc/element_model_migration_guide.md.
+  For questions please use https://github.com/dart-lang/build/discussions.
 - Require Dart 3.7.0
 
 ## 2.0.0

source_gen/lib/src/builder.dart

@@ -5,7 +5,7 @@
 import 'dart:convert';
 
 import 'package:analyzer/dart/ast/ast.dart';
-import 'package:analyzer/dart/element/element.dart';
+import 'package:analyzer/dart/element/element2.dart';
 import 'package:build/build.dart';
 import 'package:dart_style/dart_style.dart';
 import 'package:pub_semver/pub_semver.dart';
@@ -109,7 +109,7 @@ class _Builder extends Builder {
   }
 
   Future<void> _generateForLibrary(
-    LibraryElement library,
+    LibraryElement2 library,
     BuildStep buildStep,
   ) async {
     final generatedOutputs =
@@ -355,7 +355,7 @@ class LibraryBuilder extends _Builder {
 }
 
 Stream<GeneratedOutput> _generate(
-  LibraryElement library,
+  LibraryElement2 library,
   List<Generator> generators,
   BuildStep buildStep,
 ) async* {
@@ -426,7 +426,7 @@ const partIdRegExpLiteral = r'[A-Za-z_\d-]+';
 
 final _partIdRegExp = RegExp('^$partIdRegExpLiteral\$');
 
-String languageOverrideForLibrary(LibraryElement library) {
+String languageOverrideForLibrary(LibraryElement2 library) {
   final override = library.languageVersion.override;
   return override == null
       ? ''

source_gen/lib/src/constants/reader.dart

@@ -3,7 +3,7 @@
 // BSD-style license that can be found in the LICENSE file.
 
 import 'package:analyzer/dart/constant/value.dart';
-import 'package:analyzer/dart/element/element.dart';
+import 'package:analyzer/dart/element/element2.dart';
 import 'package:analyzer/dart/element/type.dart';
 
 import '../type_checker.dart';
@@ -268,7 +268,7 @@ class _DartObjectConstant extends ConstantReader {
   ConstantReader read(String field) {
     final reader = peek(field);
     if (reader == null) {
-      assertHasField(objectValue.type!.element as InterfaceElement, field);
+      assertHasField(objectValue.type!.element3 as InterfaceElement2, field);
       return const _NullConstant();
     }
     return reader;