Files
sdk/pkg/scrape/example/class_reuse.dart
T
Robert Nystrom 891a8a1aa3 Add new "scrape" package.
The README explains, it but, in short, this is a little library I
harvested from the scripts I wrote during ui-as-code. It makes it easier
to write scripts to gather bits of statistical data from Dart syntax.

Change-Id: Ia33797f582c4d4f9f966b7f6dc7b58ca2414601e
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/166788
Commit-Queue: Bob Nystrom <rnystrom@google.com>
Reviewed-by: Phil Quitslund <pquitslund@google.com>
Auto-Submit: Bob Nystrom <rnystrom@google.com>
2020-10-19 22:24:28 +00:00

47 lines
1.4 KiB
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('Declarations')
..addHistogram('Uses')
..addHistogram('Superclass names')
..addHistogram('Superinterface names')
..addHistogram('Mixin names')
..addVisitor(() => ClassReuseVisitor())
..runCommandLine(arguments);
}
class ClassReuseVisitor extends ScrapeVisitor {
@override
void visitClassDeclaration(ClassDeclaration node) {
if (node.isAbstract) {
record('Declarations', 'abstract class');
} else {
record('Declarations', 'class');
}
if (node.extendsClause != null) {
record('Uses', 'extend');
record('Superclass names', node.extendsClause.superclass.toString());
}
if (node.withClause != null) {
for (var mixin in node.withClause.mixinTypes) {
record('Uses', 'mixin');
record('Mixin names', mixin.toString());
}
}
if (node.implementsClause != null) {
for (var type in node.implementsClause.interfaces) {
record('Uses', 'implement');
record('Superinterface names', type.toString());
}
}
}
}