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Unified Diff: pkg/compiler/lib/src/mirrors/dart2js_mirrors.dart

Issue 1799283002: Delete support for source mirrors (Closed) Base URL: git@github.com:dart-lang/sdk.git@master
Patch Set: new attempt Created 4 years, 7 months ago
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Index: pkg/compiler/lib/src/mirrors/dart2js_mirrors.dart
diff --git a/pkg/compiler/lib/src/mirrors/dart2js_mirrors.dart b/pkg/compiler/lib/src/mirrors/dart2js_mirrors.dart
deleted file mode 100644
index 406502a2746f4d6e38b9c847bb525420b41b23ca..0000000000000000000000000000000000000000
--- a/pkg/compiler/lib/src/mirrors/dart2js_mirrors.dart
+++ /dev/null
@@ -1,480 +0,0 @@
-// Copyright (c) 2012, 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 dart2js.mirrors;
-
-import 'dart:collection' show UnmodifiableListView, UnmodifiableMapView;
-
-import '../common.dart';
-import '../compiler.dart' show Compiler;
-import '../constants/expressions.dart';
-import '../constants/values.dart';
-import '../dart_types.dart';
-import '../elements/elements.dart';
-import '../elements/modelx.dart' show LibraryElementX;
-import '../resolution/scope.dart' show Scope;
-import '../script.dart';
-import '../tokens/token.dart';
-import '../tokens/token_constants.dart' as Tokens;
-import '../tree/tree.dart';
-import '../util/characters.dart' show $CR, $LF;
-import '../util/util.dart' show Link;
-import 'mirrors_util.dart';
-import 'source_mirrors.dart';
-
-part 'dart2js_instance_mirrors.dart';
-part 'dart2js_library_mirror.dart';
-part 'dart2js_member_mirrors.dart';
-part 'dart2js_type_mirrors.dart';
-
-//------------------------------------------------------------------------------
-// Utility types and functions for the dart2js mirror system
-//------------------------------------------------------------------------------
-
-bool _includeLibrary(Dart2JsLibraryMirror mirror) {
- return const bool.fromEnvironment("list_all_libraries") ||
- !mirror._element.isInternalLibrary;
-}
-
-bool _isPrivate(String name) {
- return name.startsWith('_');
-}
-
-List<ParameterMirror> _parametersFromFunctionSignature(
- Dart2JsDeclarationMirror owner, FunctionSignature signature) {
- var parameters = <ParameterMirror>[];
- signature.requiredParameters.forEach((FormalElement parameter) {
- parameters.add(new Dart2JsParameterMirror(owner, parameter,
- isOptional: false, isNamed: false));
- });
- bool isNamed = signature.optionalParametersAreNamed;
- signature.optionalParameters.forEach((FormalElement parameter) {
- parameters.add(new Dart2JsParameterMirror(owner, parameter,
- isOptional: true, isNamed: isNamed));
- });
- return parameters;
-}
-
-MethodMirror _convertElementMethodToMethodMirror(
- Dart2JsDeclarationMirror library, Element element) {
- if (element is FunctionElement) {
- return new Dart2JsMethodMirror(library, element);
- } else {
- return null;
- }
-}
-
-//------------------------------------------------------------------------------
-// Dart2Js specific extensions of mirror interfaces
-//------------------------------------------------------------------------------
-
-abstract class Dart2JsMirror implements Mirror {
- Dart2JsMirrorSystem get mirrorSystem;
-}
-
-abstract class Dart2JsDeclarationMirror extends Dart2JsMirror
- implements DeclarationSourceMirror {
- bool get isTopLevel => owner != null && owner is LibraryMirror;
-
- bool get isPrivate => _isPrivate(_simpleNameString);
-
- String get _simpleNameString;
-
- String get _qualifiedNameString {
- var parent = owner;
- if (parent is Dart2JsDeclarationMirror) {
- return '${parent._qualifiedNameString}.${_simpleNameString}';
- }
- assert(parent == null);
- return _simpleNameString;
- }
-
- Symbol get simpleName => symbolOf(_simpleNameString, getLibrary(this));
-
- Symbol get qualifiedName => symbolOf(_qualifiedNameString, getLibrary(this));
-
- DeclarationMirror lookupInScope(String name) => null;
-
- bool get isNameSynthetic => false;
-
- /// Returns the type mirror for [type] in the context of this declaration.
- TypeMirror _getTypeMirror(DartType type) {
- return mirrorSystem._convertTypeToTypeMirror(type);
- }
-
- /// Returns a list of the declaration mirrorSystem for [element].
- Iterable<Dart2JsMemberMirror> _getDeclarationMirrors(Element element) {
- if (element.isSynthesized) {
- return const <Dart2JsMemberMirror>[];
- } else if (element is VariableElement) {
- return <Dart2JsMemberMirror>[new Dart2JsFieldMirror(this, element)];
- } else if (element is FunctionElement) {
- return <Dart2JsMemberMirror>[new Dart2JsMethodMirror(this, element)];
- } else if (element is AbstractFieldElement) {
- var members = <Dart2JsMemberMirror>[];
- AbstractFieldElement field = element;
- if (field.getter != null) {
- members.add(new Dart2JsMethodMirror(this, field.getter));
- }
- if (field.setter != null) {
- members.add(new Dart2JsMethodMirror(this, field.setter));
- }
- return members;
- }
- mirrorSystem.compiler.reporter.internalError(
- element, "Unexpected member type $element ${element.kind}.");
- return null;
- }
-}
-
-abstract class Dart2JsElementMirror extends Dart2JsDeclarationMirror {
- final Dart2JsMirrorSystem mirrorSystem;
- final Element _element;
- List<InstanceMirror> _metadata;
-
- Dart2JsElementMirror(this.mirrorSystem, this._element) {
- assert(mirrorSystem != null);
- assert(_element != null);
- }
-
- String get _simpleNameString => _element.name;
-
- /**
- * Computes the first token for this declaration using the begin token of the
- * element node or element position as indicator.
- */
- Token getBeginToken() {
- Element element = _element;
- if (element is AstElement) {
- Node node = element.node;
- if (node != null) {
- return node.getBeginToken();
- }
- }
- return element.position;
- }
-
- /**
- * Computes the last token for this declaration using the end token of the
- * element node or element position as indicator.
- */
- Token getEndToken() {
- Element element = _element;
- if (element is AstElement) {
- Node node = element.node;
- if (node != null) {
- return node.getEndToken();
- }
- }
- return element.position;
- }
-
- /**
- * Returns the first token for the source of this declaration, including
- * metadata annotations.
- */
- Token getFirstToken() {
- if (!_element.metadata.isEmpty) {
- for (MetadataAnnotation metadata in _element.metadata) {
- if (metadata.beginToken != null) {
- return metadata.beginToken;
- }
- }
- }
- return getBeginToken();
- }
-
- Script getScript() => _element.compilationUnit.script;
-
- SourceLocation get location {
- Token beginToken = getFirstToken();
- Script script = getScript();
- SourceSpan span;
- if (beginToken == null) {
- span = new SourceSpan(script.resourceUri, 0, 0);
- } else {
- Token endToken = getEndToken();
- span =
- new SourceSpan.fromTokens(script.resourceUri, beginToken, endToken);
- }
- return new Dart2JsSourceLocation(script, span);
- }
-
- String toString() => _element.toString();
-
- void _appendCommentTokens(Token commentToken) {
- while (commentToken != null && commentToken.kind == Tokens.COMMENT_TOKEN) {
- _metadata.add(
- new Dart2JsCommentInstanceMirror(mirrorSystem, commentToken.value));
- commentToken = commentToken.next;
- }
- }
-
- List<InstanceMirror> get metadata {
- if (_metadata == null) {
- _metadata = <InstanceMirror>[];
- for (MetadataAnnotation metadata in _element.metadata) {
- _appendCommentTokens(
- mirrorSystem.compiler.commentMap[metadata.beginToken]);
- metadata.ensureResolved(mirrorSystem.compiler.resolution);
- _metadata.add(_convertConstantToInstanceMirror(
- mirrorSystem,
- metadata.constant,
- mirrorSystem.compiler.constants
- .getConstantValue(metadata.constant)));
- }
- _appendCommentTokens(mirrorSystem.compiler.commentMap[getBeginToken()]);
- }
- // TODO(johnniwinther): Return an unmodifiable list instead.
- return new List<InstanceMirror>.from(_metadata);
- }
-
- DeclarationMirror lookupInScope(String name) {
- // TODO(11653): Support lookup of constructors.
- Scope scope = _element.buildScope();
- Element result;
- int index = name.indexOf('.');
- if (index != -1) {
- // Lookup [: prefix.id :].
- String prefix = name.substring(0, index);
- String id = name.substring(index + 1);
- result = scope.lookup(prefix);
- if (result != null && result.isPrefix) {
- PrefixElement prefix = result;
- result = prefix.lookupLocalMember(id);
- } else {
- result = null;
- }
- } else {
- // Lookup [: id :].
- result = scope.lookup(name);
- }
- if (result == null || result.isPrefix) return null;
- return _convertElementToDeclarationMirror(mirrorSystem, result);
- }
-
- bool operator ==(var other) {
- if (identical(this, other)) return true;
- if (other == null) return false;
- if (other is! Dart2JsElementMirror) return false;
- return _element == other._element && owner == other.owner;
- }
-
- int get hashCode {
- return 13 * _element.hashCode + 17 * owner.hashCode;
- }
-}
-
-//------------------------------------------------------------------------------
-// Mirror system implementation.
-//------------------------------------------------------------------------------
-
-class Dart2JsMirrorSystem extends MirrorSystem {
- final Compiler compiler;
- Map<LibraryElement, Dart2JsLibraryMirror> _libraryMap;
- UnmodifiableMapView<Uri, LibraryMirror> _filteredLibraries;
-
- Dart2JsMirrorSystem(this.compiler);
-
- IsolateMirror get isolate => null;
-
- void _ensureLibraries() {
- if (_filteredLibraries == null) {
- var filteredLibs = new Map<Uri, LibraryMirror>();
- _libraryMap = new Map<LibraryElement, Dart2JsLibraryMirror>();
- compiler.libraryLoader.libraries.forEach((LibraryElement v) {
- var mirror = new Dart2JsLibraryMirror(mirrorSystem, v);
- if (_includeLibrary(mirror)) {
- filteredLibs[mirror.uri] = mirror;
- }
- _libraryMap[v] = mirror;
- });
-
- _filteredLibraries =
- new UnmodifiableMapView<Uri, LibraryMirror>(filteredLibs);
- }
- }
-
- Map<Uri, LibraryMirror> get libraries {
- _ensureLibraries();
- return _filteredLibraries;
- }
-
- Dart2JsLibraryMirror _getLibrary(LibraryElement element) =>
- _libraryMap[element];
-
- Dart2JsMirrorSystem get mirrorSystem => this;
-
- TypeMirror get dynamicType => _convertTypeToTypeMirror(const DynamicType());
-
- TypeMirror get voidType => _convertTypeToTypeMirror(const VoidType());
-
- TypeMirror _convertTypeToTypeMirror(DartType type) {
- assert(type != null);
- if (type.treatAsDynamic) {
- return new Dart2JsDynamicMirror(this, type);
- } else if (type is InterfaceType) {
- if (type.typeArguments.isEmpty) {
- return _getTypeDeclarationMirror(type.element);
- } else {
- return new Dart2JsInterfaceTypeMirror(this, type);
- }
- } else if (type is TypeVariableType) {
- return new Dart2JsTypeVariableMirror(this, type);
- } else if (type is FunctionType) {
- return new Dart2JsFunctionTypeMirror(this, type);
- } else if (type is VoidType) {
- return new Dart2JsVoidMirror(this, type);
- } else if (type is TypedefType) {
- if (type.typeArguments.isEmpty) {
- return _getTypeDeclarationMirror(type.element);
- } else {
- return new Dart2JsTypedefMirror(this, type);
- }
- }
- compiler.reporter.internalError(
- type.element, "Unexpected type $type of kind ${type.kind}.");
- return null;
- }
-
- DeclarationMirror _getTypeDeclarationMirror(TypeDeclarationElement element) {
- if (element.isClass) {
- return new Dart2JsClassDeclarationMirror(this, element.thisType);
- } else if (element.isTypedef) {
- return new Dart2JsTypedefDeclarationMirror(this, element.thisType);
- }
- compiler.reporter.internalError(element, "Unexpected element $element.");
- return null;
- }
-}
-
-abstract class ContainerMixin {
- UnmodifiableMapView<Symbol, DeclarationMirror> _declarations;
-
- void _ensureDeclarations() {
- if (_declarations == null) {
- var declarations = <Symbol, DeclarationMirror>{};
- _forEachElement((Element element) {
- for (DeclarationMirror mirror in _getDeclarationMirrors(element)) {
- assert(
- invariant(_element, !declarations.containsKey(mirror.simpleName),
- message: "Declaration name '${nameOf(mirror)}' "
- "is not unique in $_element."));
- declarations[mirror.simpleName] = mirror;
- }
- });
- _declarations =
- new UnmodifiableMapView<Symbol, DeclarationMirror>(declarations);
- }
- }
-
- Element get _element;
-
- void _forEachElement(f(Element element));
-
- Iterable<Dart2JsMemberMirror> _getDeclarationMirrors(Element element);
-
- Map<Symbol, DeclarationMirror> get declarations {
- _ensureDeclarations();
- return _declarations;
- }
-}
-
-/**
- * Converts [element] into its corresponding [DeclarationMirror], if any.
- *
- * If [element] is an [AbstractFieldElement] the mirror for its getter is
- * returned or, if not present, the mirror for its setter.
- */
-DeclarationMirror _convertElementToDeclarationMirror(
- Dart2JsMirrorSystem system, Element element) {
- if (element.isTypeVariable) {
- TypeVariableElement typeVariable = element;
- return new Dart2JsTypeVariableMirror(system, typeVariable.type);
- }
-
- Dart2JsLibraryMirror library = system._libraryMap[element.library];
- if (element.isLibrary) return library;
- if (element.isTypedef) {
- TypedefElement typedefElement = element;
- return new Dart2JsTypedefMirror.fromLibrary(
- library, typedefElement.thisType);
- }
-
- Dart2JsDeclarationMirror container = library;
- if (element.enclosingClass != null) {
- container = system._getTypeDeclarationMirror(element.enclosingClass);
- }
- if (element.isClass) return container;
- if (element.isParameter) {
- Dart2JsMethodMirror method = _convertElementMethodToMethodMirror(
- container, element.outermostEnclosingMemberOrTopLevel);
- // TODO(johnniwinther): Find the right info for [isOptional] and [isNamed].
- return new Dart2JsParameterMirror(method, element,
- isOptional: false, isNamed: false);
- }
- Iterable<DeclarationMirror> members =
- container._getDeclarationMirrors(element);
- if (members.isEmpty) return null;
- return members.first;
-}
-
-/**
- * Experimental API for accessing compilation units defined in a
- * library.
- */
-// TODO(ahe): Superclasses? Is this really a mirror?
-class Dart2JsCompilationUnitMirror extends Dart2JsMirror with ContainerMixin {
- final Dart2JsLibraryMirror _library;
- final CompilationUnitElement _element;
-
- Dart2JsCompilationUnitMirror(this._element, this._library);
-
- Dart2JsMirrorSystem get mirrorSystem => _library.mirrorSystem;
-
- // TODO(johnniwinther): make sure that these are returned in declaration
- // order.
- void _forEachElement(f(Element element)) => _element.forEachLocalMember(f);
-
- Iterable<DeclarationMirror> _getDeclarationMirrors(Element element) =>
- _library._getDeclarationMirrors(element);
-
- Uri get uri => _element.script.resourceUri;
-}
-
-/**
- * Transitional class that allows access to features that have not yet
- * made it to the mirror API.
- *
- * All API in this class is experimental.
- */
-class BackDoor {
- /// Return the compilation units comprising [library].
- static List<Mirror> compilationUnitsOf(Dart2JsLibraryMirror library) {
- return library._element.compilationUnits
- .mapToList((cu) => new Dart2JsCompilationUnitMirror(cu, library));
- }
-
- static Iterable<ConstantExpression> metadataSyntaxOf(
- Dart2JsElementMirror declaration) {
- return declaration._element.metadata.map((metadata) => metadata.constant);
- }
-
- static ConstantExpression initializerSyntaxOf(Dart2JsFieldMirror variable) {
- Compiler compiler = variable.mirrorSystem.compiler;
- return variable._variable.constant;
- }
-
- static ConstantExpression defaultValueSyntaxOf(
- Dart2JsParameterMirror parameter) {
- if (!parameter.hasDefaultValue) return null;
- ParameterElement parameterElement = parameter._element;
- Compiler compiler = parameter.mirrorSystem.compiler;
- return parameterElement.constant;
- }
-
- static Mirror getMirrorFromElement(Dart2JsMirror mirror, Element element) {
- return _convertElementToDeclarationMirror(mirror.mirrorSystem, element);
- }
-}
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