Migrate TypeParameter and Warnings element model (#3983)

Author: srawlins

lib/src/generator/templates.runtime_renderers.dart

@@ -20353,7 +20353,7 @@ class _Renderer_Package extends RendererBase<Package> {
   }
 }
 
-String renderIndex(PackageTemplateData context, Template template) {
+String renderError(PackageTemplateData context, Template template) {
   var buffer = StringBuffer();
   _render_PackageTemplateData(context, template.ast, template, buffer);
   return buffer.toString();
@@ -20716,7 +20716,7 @@ String renderSearchPage(PackageTemplateData context, Template template) {
   return buffer.toString();
 }
 
-String renderError(PackageTemplateData context, Template template) {
+String renderIndex(PackageTemplateData context, Template template) {
   var buffer = StringBuffer();
   _render_PackageTemplateData(context, template.ast, template, buffer);
   return buffer.toString();
@@ -24609,6 +24609,34 @@ class _Renderer_TypeParameter extends RendererBase<TypeParameter> {
                   );
                 },
               ),
+              'element2': Property(
+                getValue: (CT_ c) => c.element2,
+                renderVariable:
+                    (CT_ c, Property<CT_> self, List<String> remainingNames) =>
+                        self.renderSimpleVariable(
+                          c,
+                          remainingNames,
+                          'TypeParameterElement2',
+                        ),
+
+                isNullValue: (CT_ c) => false,
+
+                renderValue: (
+                  CT_ c,
+                  RendererBase<CT_> r,
+                  List<MustachioNode> ast,
+                  StringSink sink,
+                ) {
+                  renderSimple(
+                    c.element2,
+                    ast,
+                    r.template,
+                    sink,
+                    parent: r,
+                    getters: _invisibleGetters['TypeParameterElement2']!,
+                  );
+                },
+              ),
               'enclosingElement': Property(
                 getValue: (CT_ c) => c.enclosingElement,
                 renderVariable: (
@@ -27051,6 +27079,14 @@ const _invisibleGetters = {
     'name',
     'runtimeType',
   },
+  'TypeParameterElement2': {
+    'baseElement',
+    'bound',
+    'firstFragment',
+    'fragments',
+    'hashCode',
+    'runtimeType',
+  },
   'int': {
     'bitLength',
     'hashCode',

lib/src/model/model_element.dart

@@ -352,7 +352,8 @@ abstract class ModelElement
           enclosingContainer: enclosingContainer,
           originalMember: originalMember,
         ),
-      TypeParameterElement() => TypeParameter(e, library, packageGraph),
+      TypeParameterElement() =>
+        TypeParameter(e.asElement2, library, packageGraph),
       _ => throw UnimplementedError('Unknown type ${e.runtimeType}'),
     };
   }

lib/src/model/type_parameter.dart

@@ -2,23 +2,29 @@
 // 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.
 
-// ignore_for_file: analyzer_use_new_elements
-
 import 'package:analyzer/dart/element/element.dart';
+import 'package:analyzer/dart/element/element2.dart';
+// ignore: implementation_imports
+import 'package:analyzer/src/dart/element/element.dart';
 import 'package:dartdoc/src/element_type.dart';
 import 'package:dartdoc/src/model/comment_referable.dart';
 import 'package:dartdoc/src/model/kind.dart';
 import 'package:dartdoc/src/model/model.dart';
 
 class TypeParameter extends ModelElement with HasNoPage {
   @override
-  final TypeParameterElement element;
+  // ignore: analyzer_use_new_elements
+  TypeParameterElement get element =>
+      (element2 as TypeParameterElementImpl2).firstFragment;
+
+  @override
+  final TypeParameterElement2 element2;
 
-  TypeParameter(this.element, super.library, super.packageGraph);
+  TypeParameter(this.element2, super.library, super.packageGraph);
 
   @override
   ModelElement get enclosingElement =>
-      getModelFor(element.enclosingElement3!, library);
+      getModelFor2(element2.enclosingElement2!, library);
 
   /// [TypeParameter]s don't have documentation pages, and don't link to the
   /// element on which they are declared.
@@ -31,27 +37,22 @@ class TypeParameter extends ModelElement with HasNoPage {
   Kind get kind => Kind.typeParameter;
 
   ElementType? get boundType {
-    var bound = element.bound;
+    var bound = element2.bound;
     return bound == null ? null : getTypeFor(bound, library);
   }
 
   @override
   bool get hasParameters => false;
 
   @override
-  String get name => element.bound != null
-      ? '${element.name} extends ${boundType!.nameWithGenerics}'
-      : element.name;
-
-  String? _linkedName;
+  String get name => element2.bound != null
+      ? '${element2.name3} extends ${boundType!.nameWithGenerics}'
+      : element2.name3!;
 
   @override
-  String get linkedName {
-    _linkedName ??= element.bound != null
-        ? '${element.name} extends ${boundType!.linkedName}'
-        : element.name;
-    return _linkedName!;
-  }
+  String get linkedName => element2.bound != null
+      ? '${element2.name3} extends ${boundType!.linkedName}'
+      : element2.name3!;
 
   @override
   late final Map<String, CommentReferable> referenceChildren = () {
@@ -64,7 +65,7 @@ class TypeParameter extends ModelElement with HasNoPage {
   Iterable<CommentReferable> get referenceParents => [enclosingElement];
 
   @override
-  String get referenceName => element.name;
+  String get referenceName => element2.name3!;
 }
 
 /// A mixin for [ModelElement]s which have type parameters.

lib/src/warnings.dart

@@ -2,8 +2,6 @@
 // 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.
 
-// ignore_for_file: analyzer_use_new_elements
-
 import 'dart:io';
 import 'dart:math' as math;
 
@@ -98,6 +96,7 @@ List<DartdocOption<Object?>> createPackageWarningOptions(
 /// Something that package warnings can be reported on. Optionally associated
 /// with an analyzer [element].
 mixin Warnable implements CommentReferable, Documentable, Locatable {
+  // ignore: analyzer_use_new_elements
   Element? get element;
 
   Element2? get element2;