First end-to-end capability in analyzer2dart.

pkg/analyzer2dart/lib/src/element_converter.dart

+// Copyright (c) 2014, 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.
+
+/// Convertion of elements between the analyzer element model and the dart2js
+/// element model.
+
+library analyzer2dart.element_converter;
+
+import 'package:compiler/implementation/elements/elements.dart' as dart2js;
+import 'package:compiler/implementation/elements/modelx.dart' as modelx;
+import 'package:compiler/implementation/util/util.dart' as util;
+import 'package:compiler/implementation/dart_types.dart';
+import 'package:analyzer/src/generated/element.dart' as analyzer;
+
+class ElementConverter {
+  /// Map from analyzer elements to their equivalent dart2js elements.
+  Map<analyzer.Element, dart2js.Element> conversionMap =
+      <analyzer.Element, dart2js.Element>{};
+
+  /// Map from dart2js elements to their equivalent analyzer elements.
+  Map<dart2js.Element, analyzer.Element> inversionMap =
+      <dart2js.Element, analyzer.Element>{};
+
+  ElementConverterVisitor visitor;
+
+  ElementConverter() {
+    visitor = new ElementConverterVisitor(this);
+  }
+
+  dart2js.Element convertElement(analyzer.Element input) {
+    return conversionMap.putIfAbsent(input, () {
+      dart2js.Element output = convertElementInternal(input);
+      inversionMap[output] = input;
+      return output;
+    });
+  }
+
+  analyzer.Element invertElement(dart2js.Element input) {
+    return inversionMap[input];
+  }
+
+  dart2js.Element convertElementInternal(analyzer.Element input) {
+    dart2js.Element output = input.accept(visitor);
+    if (output != null) return output;
+    throw new UnsupportedError(
+        "Conversion of $input (${input.runtimeType}) is not supported.");
+  }
+}
+
+/// Visitor that converts analyzer elements to dart2js elements.
+class ElementConverterVisitor
+    extends analyzer.SimpleElementVisitor<dart2js.Element> {
+  final ElementConverter converter;
+
+  ElementConverterVisitor(this.converter);
+
+  @override
+  dart2js.LibraryElement visitLibraryElement(analyzer.LibraryElement input) {
+    return new LibraryElementY(converter, input);
+  }
+
+  @override
+  dart2js.FunctionElement visitFunctionElement(analyzer.FunctionElement input) {
+    return new TopLevelFunctionElementY(converter, input);
+  }
+}
+
+/// Base [dart2js.Element] implementation for converted analyzer elements.
+class ElementY extends dart2js.Element {
+  final ElementConverter converter;
+  final analyzer.Element element;
+
+  @override
+  String get name => element.name;
+
+  ElementY(this.converter, this.element);
+
+  @override
+  dart2js.LibraryElement get implementationLibrary => library;
+
+  @override
+  dart2js.Element get origin => this;
+
+  @override
+  dart2js.Element get patch => null;
+
+  @override
+  dart2js.Element get declaration => this;
+
+  @override
+  dart2js.Element get implementation => this;
+
+  @override
+  bool get isPatch => false;
+
+  @override
+  bool get isPatched => false;
+
+  @override
+  dart2js.LibraryElement get library {
+    return converter.convertElement(element.library);
+  }
+
+  unsupported(String method) {
+    throw new UnsupportedError(
+        "'$method' is unsupported on $this ($runtimeType)");
+  }
+
+
+  @override
+  bool get isFinal => unsupported('isFinal');
+
+  @override
+  bool get isStatic => unsupported('isStatic');
+
+  @override
+  bool isForeign(_) => unsupported('isForeign');
+
+  @override
+  bool get impliesType => unsupported('impliesType');
+
+  @override
+  bool get isOperator => unsupported('impliesType');
+
+  @override
+  get position => unsupported('position');
+
+  @override
+  computeType(_) => unsupported('computeType');
+
+  @override
+  get enclosingElement => unsupported('enclosingElement');
+
+  @override
+  accept(_) => unsupported('accept');
+
+  @override
+  void addMetadata(_) => unsupported('addMetadata');
+
+  @override
+  get analyzableElement => unsupported('analyzableElement');
+
+  @override
+  asFunctionElement() => unsupported('asFunctionElement');
+
+  @override
+  buildScope() => unsupported('buildScope');
+
+  @override
+  get compilationUnit => unsupported('compilationUnit');
+
+  @override
+  get contextClass => unsupported('contextClass');
+
+  @override
+  void diagnose(context, listener) => unsupported('diagnose');
+
+  @override
+  get enclosingClass => unsupported('enclosingClass');
+
+  @override
+  get enclosingClassOrCompilationUnit {
+    return unsupported('enclosingClassOrCompilationUnit');
+  }
+
+  @override
+  String get fixedBackendName => unsupported('fixedBackendName');
+
+  @override
+  bool get hasFixedBackendName => unsupported('hasFixedBackendName');
+
+  @override
+  bool get isAbstract => unsupported('isAbstract');
+
+  @override
+  bool get isAssignable => unsupported('isAssignable');
+
+  @override
+  bool get isClassMember => unsupported('isClassMember');
+
+  @override
+  bool get isClosure => unsupported('isClosure');
+
+  @override
+  bool get isConst => unsupported('isConst');
+
+  @override
+  bool get isDeclaration => unsupported('isDeclaration');
+
+  @override
+  bool get isDeferredLoaderGetter => unsupported('isDeferredLoaderGetter');
+
+  @override
+  bool get isFactoryConstructor => unsupported('isFactoryConstructor');
+
+  @override
+  bool get isForwardingConstructor => unsupported('isForwardingConstructor');
+
+  @override
+  bool get isImplementation => unsupported('isImplementation');
+
+  @override
+  bool get isInjected => unsupported('isInjected');
+
+  @override
+  bool get isInstanceMember => unsupported('isInstanceMember');
+
+  @override
+  bool get isMixinApplication => unsupported('isMixinApplication');
+
+  @override
+  bool get isNative => unsupported('isNative');
+
+  @override
+  bool get isSynthesized => unsupported('isSynthesized');
+
+  @override
+  bool get isTopLevel => unsupported('isTopLevel');
+
+  @override
+  get kind => unsupported('kind');
+
+  @override
+  get metadata => unsupported('metadata');
+
+  @override
+  get outermostEnclosingMemberOrTopLevel {
+    return unsupported('outermostEnclosingMemberOrTopLevel');
+  }
+
+  @override
+  void setFixedBackendName(String name) => unsupported('setFixedBackendName');
+
+  @override
+  void setNative(String name) => unsupported('setNative');
+}
+
+class LibraryElementY extends ElementY implements dart2js.LibraryElement {
+  analyzer.LibraryElement get element => super.element;
+
+  @override
+  dart2js.ElementKind get kind => dart2js.ElementKind.LIBRARY;
+
+  // TODO(johnniwinther): Ensure the correct semantics of this.
+  @override
+  bool get isInternalLibrary => isPlatformLibrary && element.isPrivate;
+
+  // TODO(johnniwinther): Ensure the correct semantics of this.
+  @override
+  bool get isPlatformLibrary => element.isInSdk;
+
+  @override
+  bool get isDartCore => element.isDartCore;
+
+  LibraryElementY(ElementConverter converter, analyzer.LibraryElement element)
+      : super(converter, element);
+
+  @override
+  void addCompilationUnit(_) => unsupported('addCompilationUnit');
+
+  @override
+  void addImport(element, import, listener) => unsupported('addImport');
+
+  @override
+  void addMember(element, listener) => unsupported('addMember');
+
+  @override
+  void addTag(tag, listener) => unsupported('addTag');
+
+  @override
+  void addToScope(element, listener) => unsupported('addToScope');
+
+  @override
+  void set canUseNative(bool value) => unsupported('canUseNative');
+
+  @override
+  bool get canUseNative => unsupported('canUseNative');
+
+  @override
+  Uri get canonicalUri => unsupported('canonicalUri');
+
+  @override
+  int compareTo(other) => unsupported('compareTo');
+
+  @override
+  get compilationUnits => unsupported('compilationUnits');
+
+  @override
+  get entryCompilationUnit => unsupported('entryCompilationUnit');
+
+  @override
+  get exports => unsupported('exports');
+
+  @override
+  bool get exportsHandled => unsupported('exportsHandled');
+
+  @override
+  find(String elementName) => unsupported('find');
+
+  @override
+  findExported(String elementName) => unsupported('findExported');
+
+  @override
+  findLocal(String elementName) => unsupported('findLocal');
+
+  @override
+  void forEachExport(_) => unsupported('forEachExport');
+
+  @override
+  void forEachLocalMember(_) => unsupported('forEachLocalMember');
+
+  @override
+  getImportsFor(element) => unsupported('getImportsFor');
+
+  @override
+  getLibraryFromTag(tag) => unsupported('getLibraryFromTag');
+
+  @override
+  String getLibraryName() => unsupported('getLibraryName');
+
+  @override
+  String getLibraryOrScriptName() => unsupported('getLibraryOrScriptName');
+
+  @override
+  getNonPrivateElementsInScope() => unsupported('getNonPrivateElementsInScope');
+
+  @override
+  bool hasLibraryName() => unsupported('hasLibraryName');
+
+  @override
+  bool get hasTreeElements => unsupported('hasTreeElements');
+
+  @override
+  bool get isPackageLibrary => unsupported('isPackageLibrary');
+
+  @override
+  get libraryTag => unsupported('libraryTag');
+
+  @override
+  void set libraryTag(value) => unsupported('libraryTag');
+
+  @override
+  localLookup(elementName) => unsupported('localLookup');
+
+  @override
+  void recordResolvedTag(tag, library) => unsupported('recordResolvedTag');
+
+  @override
+  void setExports(exportedElements) => unsupported('setExports');
+
+  @override
+  get tags => unsupported('tags');
+
+  @override
+  get treeElements => unsupported('treeElements');
+}
+
+class TopLevelFunctionElementY extends ElementY
+    implements dart2js.FunctionElement {
+  analyzer.FunctionElement get element => super.element;
+
+  final dart2js.FunctionSignature functionSignature =
+      new modelx.FunctionSignatureX(
+          const util.Link<dart2js.Element>(),
+          const util.Link<dart2js.Element>(),
+          0, 0, false, const <dart2js.Element>[],
+          new FunctionType.synthesized());
+
+
+  // TODO(johnniwinther): Ensure the correct semantics of this.
+  @override
+  bool get isFactoryConstructor => false;
+
+  @override
+  bool get isStatic {
+    // Semantic difference: Analyzer considers top-level and static class
+    // members to be static, dart2js only considers static class members to be
+    // static.
+    return false;
+  }
+
+  // TODO(johnniwinther): Ensure the correct semantics of this.
+  @override
+  bool get isAbstract => false;
+
+  @override
+  dart2js.ElementKind get kind => dart2js.ElementKind.FUNCTION;
+
+  @override
+  bool get isClassMember => false;
+
+  @override
+  bool get isInstanceMember => false;
+
+  @override
+  bool get isTopLevel => true;
+
+  TopLevelFunctionElementY(ElementConverter converter,
+                           analyzer.FunctionElement element)
+      : super(converter, element);
+
+  @override
+  get abstractField => unsupported('abstractField');
+
+  @override
+  computeSignature(_) => unsupported('computeSignature');
+
+  @override
+  bool get hasNode => unsupported('hasNode');
+
+  @override
+  bool get hasResolvedAst => unsupported('hasResolvedAst');
+
+  @override
+  bool get hasTreeElements => unsupported('hasTreeElements');
+
+  @override
+  get memberContext => unsupported('memberContext');
+
+  @override
+  get node => unsupported('node');
+
+  @override
+  get resolvedAst => unsupported('resolvedAst');
+
+  @override
+  get treeElements => unsupported('treeElements');
+
+  @override
+  FunctionType get type => functionSignature.type;
+}