Delete support for source mirrors

pkg/compiler/lib/src/mirrors/dart2js_library_mirror.dart

-// Copyright (c) 2013, 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.
-
-part of dart2js.mirrors;
-
-class Dart2JsLibraryMirror extends Dart2JsElementMirror
-    with ObjectMirrorMixin, ContainerMixin
-    implements LibrarySourceMirror {
-  List<LibraryDependencySourceMirror> _libraryDependencies;
-
-  Dart2JsLibraryMirror(Dart2JsMirrorSystem system, LibraryElement library)
-      : super(system, library);
-
-  Function operator [](Symbol name) {
-    throw new UnsupportedError('LibraryMirror.operator [] unsupported.');
-  }
-
-  // TODO(johnniwinther): Avoid the need for [LibraryElementX].
-  LibraryElementX get _element => super._element;
-
-  Uri get uri => _element.canonicalUri;
-
-  DeclarationMirror get owner => null;
-
-  bool get isPrivate => false;
-
-  LibraryMirror library() => this;
-
-  /**
-   * Returns the library name (for libraries with a library tag) or the script
-   * file name (for scripts without a library tag). The latter case is used to
-   * provide a 'library name' for scripts, to use for instance in dartdoc.
-   */
-  String get _simpleNameString => _element.libraryOrScriptName;
-
-  Symbol get qualifiedName => simpleName;
-
-  void _forEachElement(f(Element element)) => _element.forEachLocalMember(f);
-
-  Iterable<Dart2JsDeclarationMirror> _getDeclarationMirrors(Element element) {
-    if (element.isClass || element.isTypedef) {
-      return [mirrorSystem._getTypeDeclarationMirror(element)];
-    } else {
-      return super._getDeclarationMirrors(element);
-    }
-  }
-
-  Map<Symbol, MethodMirror> get topLevelMembers => null;
-
-  /**
-   * Computes the first token of this library using the first library tag as
-   * indicator.
-   */
-  Token getBeginToken() {
-    if (_element.libraryTag != null) {
-      return _element.libraryTag.getBeginToken();
-    } else if (!_element.tags.isEmpty) {
-      return _element.tags.first.getBeginToken();
-    }
-    return null;
-  }
-
-  /**
-   * Computes the first token of this library using the last library tag as
-   * indicator.
-   */
-  Token getEndToken() {
-    if (!_element.tags.isEmpty) {
-      return _element.tags.last.getEndToken();
-    }
-    return null;
-  }
-
-  void _ensureLibraryDependenciesAnalyzed() {
-    if (_libraryDependencies == null) {
-      // TODO(johnniwinther): Support order of declarations on [LibraryElement].
-      Map<LibraryDependency, Dart2JsLibraryDependencyMirror> mirrorMap =
-          <LibraryDependency, Dart2JsLibraryDependencyMirror>{};
-
-      void addLibraryDependency(LibraryDependency libraryDependency,
-          LibraryElement targetLibraryElement) {
-        assert(targetLibraryElement != null);
-        LibraryMirror targetLibrary =
-            mirrorSystem._getLibrary(targetLibraryElement);
-        mirrorMap[libraryDependency] = new Dart2JsLibraryDependencyMirror(
-            libraryDependency, this, targetLibrary);
-      }
-      for (ImportElement import in _element.imports) {
-        addLibraryDependency(import.node, import.importedLibrary);
-      }
-      for (ExportElement export in _element.exports) {
-        addLibraryDependency(export.node, export.exportedLibrary);
-      }
-
-      _libraryDependencies = <LibraryDependencySourceMirror>[];
-
-      for (LibraryTag node in _element.tags) {
-        LibraryDependency libraryDependency = node.asLibraryDependency();
-        if (libraryDependency != null) {
-          Dart2JsLibraryDependencyMirror mirror = mirrorMap[libraryDependency];
-          assert(mirror != null);
-          _libraryDependencies.add(mirror);
-        }
-      }
-    }
-  }
-
-  List<LibraryDependencyMirror> get libraryDependencies {
-    _ensureLibraryDependenciesAnalyzed();
-    return _libraryDependencies;
-  }
-}
-
-class Dart2JsLibraryDependencyMirror implements LibraryDependencySourceMirror {
-  final LibraryDependency _node;
-  final Dart2JsLibraryMirror _sourceLibrary;
-  final Dart2JsLibraryMirror _targetLibrary;
-  List<CombinatorMirror> _combinators;
-
-  Dart2JsLibraryDependencyMirror(
-      this._node, this._sourceLibrary, this._targetLibrary);
-
-  SourceLocation get location {
-    return new Dart2JsSourceLocation(
-        _sourceLibrary._element.entryCompilationUnit.script,
-        _sourceLibrary.mirrorSystem.compiler.reporter.spanFromSpannable(_node));
-  }
-
-  List<CombinatorMirror> get combinators {
-    if (_combinators == null) {
-      _combinators = <CombinatorMirror>[];
-      if (_node.combinators != null) {
-        for (Combinator combinator in _node.combinators.nodes) {
-          List<String> identifiers = <String>[];
-          for (Identifier identifier in combinator.identifiers.nodes) {
-            identifiers.add(identifier.source);
-          }
-          _combinators.add(new Dart2JsCombinatorMirror(identifiers,
-              isShow: combinator.isShow));
-        }
-      }
-    }
-    return _combinators;
-  }
-
-  LibraryMirror get sourceLibrary => _sourceLibrary;
-
-  LibraryMirror get targetLibrary => _targetLibrary;
-
-  /*String*/ get prefix {
-    Import import = _node.asImport();
-    if (import != null && import.prefix != null) {
-      return import.prefix.source;
-    }
-    return null;
-  }
-
-  bool get isImport => _node.asImport() != null;
-
-  bool get isExport => _node.asExport() != null;
-
-  bool get isDeferred {
-    if (_node is Import) {
-      Import import = _node;
-      return import.isDeferred;
-    }
-    return false;
-  }
-
-  List<InstanceMirror> get metadata => const <InstanceMirror>[];
-
-  /*Future<LibraryMirror>*/ loadLibrary() {
-    throw new UnsupportedError(
-        'LibraryDependencyMirror.loadLibrary unsupported.');
-  }
-}
-
-class Dart2JsCombinatorMirror implements CombinatorSourceMirror {
-  final List/*<String>*/ identifiers;
-  final bool isShow;
-
-  Dart2JsCombinatorMirror(this.identifiers, {bool isShow: true})
-      : this.isShow = isShow;
-
-  bool get isHide => !isShow;
-}
-
-class Dart2JsSourceLocation implements SourceLocation {
-  final Script _script;
-  final SourceSpan _span;
-  int _line;
-  int _column;
-
-  Dart2JsSourceLocation(this._script, this._span);
-
-  int _computeLine() {
-    var sourceFile = _script.file;
-    if (sourceFile != null) {
-      return sourceFile.getLine(offset) + 1;
-    }
-    var index = 0;
-    var lineNumber = 0;
-    while (index <= offset && index < sourceText.length) {
-      index = sourceText.indexOf('\n', index) + 1;
-      if (index <= 0) break;
-      lineNumber++;
-    }
-    return lineNumber;
-  }
-
-  int get line {
-    if (_line == null) {
-      _line = _computeLine();
-    }
-    return _line;
-  }
-
-  int _computeColumn() {
-    if (length == 0) return 0;
-
-    var sourceFile = _script.file;
-    if (sourceFile != null) {
-      return sourceFile.getColumn(sourceFile.getLine(offset), offset) + 1;
-    }
-    int index = offset - 1;
-    var columnNumber = 0;
-    while (0 <= index && index < sourceText.length) {
-      columnNumber++;
-      var codeUnit = sourceText.codeUnitAt(index);
-      if (codeUnit == $CR || codeUnit == $LF) {
-        break;
-      }
-      index--;
-    }
-    return columnNumber;
-  }
-
-  int get column {
-    if (_column == null) {
-      _column = _computeColumn();
-    }
-    return _column;
-  }
-
-  int get offset => _span.begin;
-
-  int get length => _span.end - _span.begin;
-
-  String get text => _script.text.substring(_span.begin, _span.end);
-
-  Uri get sourceUri => _script.resourceUri;
-
-  String get sourceText => _script.text;
-}