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analyzer/lib/src/services/lint.dart

-// Copyright (c) 2015, 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.
-
-library lint;
-
-import 'package:analyzer/src/generated/ast.dart';
-import 'package:analyzer/src/generated/engine.dart';
-import 'package:analyzer/src/generated/error.dart';
-import 'package:analyzer/src/generated/source.dart';
-import 'package:analyzer/src/generated/visitors.dart';
-
-/// Implementers contribute lint warnings via the provided error [reporter].
-abstract class Linter {
-  /// Used to report lint warnings.
-  /// NOTE: this is set by the framework before visit begins.
-  ErrorReporter reporter;
-
-  /// Return a visitor to be passed to compilation units to perform lint
-  /// analysis.
-  /// Lint errors are reported via this [Linter]'s error [reporter].
-  AstVisitor getVisitor();
-}
-
-/// Traverses a library's worth of dart code at a time to generate lint warnings
-/// over the set of sources.
-///
-/// See [LintCode].
-class LintGenerator {
-
-  /// A global container for contributed linters.
-  static final List<Linter> LINTERS = <Linter>[];
-
-  final Iterable<CompilationUnit> _compilationUnits;
-  final AnalysisErrorListener _errorListener;
-  final Iterable<Linter> _linters;
-
-  LintGenerator(this._compilationUnits, this._errorListener,
-      [Iterable<Linter> linters])
-      : _linters = linters != null ? linters : LINTERS;
-
-  void generate() {
-    PerformanceStatistics.lint.makeCurrentWhile(() {
-      _compilationUnits.forEach((cu) {
-        if (cu.element != null) {
-          _generate(cu, cu.element.source);
-        }
-      });
-    });
-  }
-
-  void _generate(CompilationUnit unit, Source source) {
-    ErrorReporter errorReporter = new ErrorReporter(_errorListener, source);
-    _linters.forEach((l) => l.reporter = errorReporter);
-    Iterable<AstVisitor> visitors = _linters.map((l) => l.getVisitor());
-    unit.accept(new DelegatingAstVisitor(visitors.where((v) => v != null)));
-  }
-}