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sdk/pkg/scrape/example/generic_classes.dart
T
Konstantin Shcheglov 0349520b98 DeCo. Migrate everything to new AST.
No more flag, always parse into the new AST, always visit new AST nodes,
always return them as child entities, parent-child structure reflects
the new AST.

So, use `namePart` and `body` where possible. Deprecate previous
properties.

This is still de jure a breaking change, because `parent` of deprecated
properties changes. De facto this required very few changes in google3.

Once this CL lands, I will publish `analyzer 10.0.0`, migrate everything
to new properties, delete deprecated properties, and publish `analyzer
11.0.0`.

Maybe deprecate `NamedCompilationUnitMember.name` and migrate to
subclass specific `name` or `namePart` properties before publishing
`analyzer 10.0.0`. This part is not breaking per se.

* Deprecations in `ClassDeclaration`:
  * Properties `leftBracket`, `members`, `rightBracket` are deprecated, use `body` instead.
  * Properties `name`, `typeParameters` are deprecated, use `namePart` instead.
* Deprecations in `EnumDeclaration`:
  * Properties `leftBracket`, `constants`, `members`, `rightBracket` are deprecated, use `body` instead.
  * Properties `name`, `typeParameters` are deprecated, use `namePart` instead.
* Deprecations in `ExtensionDeclaration`:
  * Properties `leftBracket`, `members`, `rightBracket` are deprecated, use `body` instead.
* Deprecations in `ExtensionTypeDeclaration`:
  * Properties `leftBracket`, `constants`, `members`, `rightBracket` are deprecated, use `body` instead.
  * Properties `constKeyword`, `name`, `representation`, `typeParameters` are deprecated,
    use `primaryConstructor` instead.
* **Breaking Change:** While the deprecated members mentioned  above still exist in the AST,
  their parent nodes have changed. This means that code  relying on specific parent-child
  relationships for these nodes might break.

Bug: https://github.com/dart-lang/sdk/issues/61701
Change-Id: Ic48104da8b029c9b454bbd2336574b7823025565
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/461841
Reviewed-by: Johnni Winther <johnniwinther@google.com>
Reviewed-by: Samuel Rawlins <srawlins@google.com>
Reviewed-by: Paul Berry <paulberry@google.com>
Commit-Queue: Konstantin Shcheglov <scheglov@google.com>
2025-11-17 08:57:36 -08:00

26 lines
815 B
Dart

// Copyright (c) 2020, 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.
import 'package:analyzer/dart/ast/ast.dart';
import 'package:scrape/scrape.dart';
void main(List<String> arguments) {
Scrape()
..addHistogram('Classes', order: SortOrder.numeric)
..addVisitor(GenericClassVisitor.new)
..runCommandLine(arguments);
}
class GenericClassVisitor extends ScrapeVisitor {
@override
void visitClassDeclaration(ClassDeclaration node) {
if (node.namePart.typeParameters == null) {
record('Classes', 0);
} else {
record('Classes', node.namePart.typeParameters!.typeParameters.length);
}
super.visitClassDeclaration(node);
}
}