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

Issue 693183006: Revert "Move dart2js from sdk/lib/_internal/compiler to pkg/compiler" (Closed) Base URL: https://dart.googlecode.com/svn/branches/bleeding_edge/dart
Patch Set: Created 6 years, 1 month ago
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Index: pkg/compiler/lib/src/mirrors/mirrors_util.dart
diff --git a/pkg/compiler/lib/src/mirrors/mirrors_util.dart b/pkg/compiler/lib/src/mirrors/mirrors_util.dart
deleted file mode 100644
index d1d4f5f26449b2764ab6da0959c3310e409d9098..0000000000000000000000000000000000000000
--- a/pkg/compiler/lib/src/mirrors/mirrors_util.dart
+++ /dev/null
@@ -1,429 +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 mirrors_util;
-
-import 'dart:collection' show Queue, IterableBase;
-
-import 'source_mirrors.dart';
-
-//------------------------------------------------------------------------------
-// Utility functions for using the Mirror API
-//------------------------------------------------------------------------------
-
-String nameOf(DeclarationMirror mirror) =>
- MirrorSystem.getName(mirror.simpleName);
-
-String qualifiedNameOf(DeclarationMirror mirror) =>
- MirrorSystem.getName(mirror.qualifiedName);
-
-// TODO(johnniwinther): Handle private names.
-Symbol symbolOf(String name, [LibraryMirror library]) => new Symbol(name);
-
-/**
- * Return the display name for [mirror].
- *
- * The display name is the normal representation of the entity name. In most
- * cases the display name is the simple name, but for a setter 'foo=' the
- * display name is simply 'foo' and for the unary minus operator the display
- * name is 'operator -'. For 'dart:' libraries the display name is the URI and
- * not the library name, for instance 'dart:core' instead of 'dart.core'.
- *
- * The display name is not unique.
- */
-String displayName(DeclarationMirror mirror) {
- if (mirror is LibraryMirror) {
- LibraryMirror library = mirror;
- if (library.uri.scheme == 'dart') {
- return library.uri.toString();
- }
- } else if (mirror is MethodMirror) {
- String simpleName = nameOf(mirror);
- if (mirror.isSetter) {
- // Remove trailing '='.
- return simpleName.substring(0, simpleName.length-1);
- } else if (mirror.isOperator) {
- return 'operator ${operatorName(mirror)}';
- } else if (mirror.isConstructor) {
- String className = displayName(mirror.owner);
- if (simpleName == '') {
- return className;
- } else {
- return '$className.$simpleName';
- }
- }
- }
- return MirrorSystem.getName(mirror.simpleName);
-}
-
-/**
- * Returns the operator name if [methodMirror] is an operator method,
- * for instance [:'<':] for [:operator <:] and [:'-':] for the unary minus
- * operator. Return [:null:] if [methodMirror] is not an operator method.
- */
-String operatorName(MethodMirror methodMirror) {
- if (methodMirror.isOperator) {
- if (methodMirror.simpleName == const Symbol('unary-')) {
- return '-';
- } else {
- return nameOf(methodMirror);
- }
- }
- return null;
-}
-
-/**
- * Returns an iterable over the type declarations directly inheriting from
- * the declaration of [type] within [mirrors].
- */
-Iterable<ClassMirror> computeSubdeclarations(MirrorSystem mirrors,
- ClassMirror type) {
- type = type.originalDeclaration;
- var subtypes = <ClassMirror>[];
- mirrors.libraries.forEach((_, library) {
- library.declarations.values
- .where((mirror) => mirror is ClassMirror)
- .forEach((ClassMirror otherType) {
- var superClass = otherType.superclass;
- if (superClass != null) {
- superClass = superClass.originalDeclaration;
- if (superClass == type) {
- subtypes.add(otherType);
- }
- }
- final superInterfaces = otherType.superinterfaces;
- for (ClassMirror superInterface in superInterfaces) {
- superInterface = superInterface.originalDeclaration;
- if (superInterface == type) {
- subtypes.add(otherType);
- }
- }
- });
- });
- return subtypes;
-}
-
-class HierarchyIterable extends IterableBase<ClassMirror> {
- final bool includeType;
- final ClassMirror type;
-
- HierarchyIterable(this.type, {bool includeType})
- : this.includeType = includeType;
-
- Iterator<ClassMirror> get iterator =>
- new HierarchyIterator(type, includeType: includeType);
-}
-
-/**
- * [HierarchyIterator] iterates through the class hierarchy of the provided
- * type.
- *
- * First the superclass relation is traversed, skipping [Object], next the
- * superinterface relation and finally is [Object] visited. The supertypes are
- * visited in breadth first order and a superinterface is visited more than once
- * if implemented through multiple supertypes.
- */
-class HierarchyIterator implements Iterator<ClassMirror> {
- final Queue<ClassMirror> queue = new Queue<ClassMirror>();
- ClassMirror object;
- ClassMirror _current;
-
- HierarchyIterator(ClassMirror type, {bool includeType}) {
- if (includeType) {
- queue.add(type);
- } else {
- push(type);
- }
- }
-
- ClassMirror push(ClassMirror type) {
- if (type.superclass != null) {
- if (isObject(type.superclass)) {
- object = type.superclass;
- } else {
- queue.addFirst(type.superclass);
- }
- }
- queue.addAll(type.superinterfaces);
- return type;
- }
-
- ClassMirror get current => _current;
-
- bool moveNext() {
- _current = null;
- if (queue.isEmpty) {
- if (object == null) return false;
- _current = object;
- object = null;
- return true;
- } else {
- _current = push(queue.removeFirst());
- return true;
- }
- }
-}
-
-LibraryMirror getLibrary(DeclarationMirror declaration) {
- while (declaration != null && declaration is! LibraryMirror) {
- declaration = declaration.owner;
- }
- return declaration;
-}
-
-Iterable<DeclarationMirror> membersOf(
- Map<Symbol, DeclarationMirror> declarations) {
- return declarations.values.where(
- (mirror) => mirror is MethodMirror || mirror is VariableMirror);
-}
-
-Iterable<TypeMirror> classesOf(
- Map<Symbol, DeclarationMirror> declarations) {
- return new _TypeOfIterable<ClassMirror>(declarations.values);
-}
-
-Iterable<TypeMirror> typesOf(
- Map<Symbol, DeclarationMirror> declarations) {
- return new _TypeOfIterable<TypeMirror>(declarations.values);
-}
-
-Iterable<MethodMirror> methodsOf(
- Map<Symbol, DeclarationMirror> declarations) {
- return anyMethodOf(declarations).where((mirror) => mirror.isRegularMethod);
-}
-
-Iterable<MethodMirror> constructorsOf(
- Map<Symbol, DeclarationMirror> declarations) {
- return anyMethodOf(declarations).where((mirror) => mirror.isConstructor);
-}
-
-Iterable<MethodMirror> settersOf(
- Map<Symbol, DeclarationMirror> declarations) {
- return anyMethodOf(declarations).where((mirror) => mirror.isSetter);
-}
-
-Iterable<MethodMirror> gettersOf(
- Map<Symbol, DeclarationMirror> declarations) {
- return anyMethodOf(declarations).where((mirror) => mirror.isGetter);
-}
-
-Iterable<MethodMirror> anyMethodOf(
- Map<Symbol, DeclarationMirror> declarations) {
- return new _TypeOfIterable<MethodMirror>(declarations.values);
-}
-
-Iterable<VariableMirror> variablesOf(
- Map<Symbol, DeclarationMirror> declarations) {
- return new _TypeOfIterable<VariableMirror>(declarations.values);
-}
-
-class _TypeOfIterable<T> extends IterableBase<T> {
- final Iterable _source;
-
- _TypeOfIterable(this._source);
-
- Iterator<T> get iterator => new _TypeOfIterator<T>(_source.iterator);
-}
-
-class _TypeOfIterator<T> implements Iterator<T> {
- final Iterator _source;
-
- T get current => _source.current;
-
- _TypeOfIterator(this._source);
-
- bool moveNext() {
- while(_source.moveNext()) {
- if (_source.current is T) {
- return true;
- }
- }
- return false;
- }
-}
-
-bool isObject(TypeMirror mirror) =>
- mirror is ClassMirror && mirror.superclass == null;
-
-/// Returns `true` if [cls] is declared in a private dart library.
-bool isFromPrivateDartLibrary(ClassMirror cls) {
- if (isMixinApplication(cls)) cls = cls.mixin;
- var uri = getLibrary(cls).uri;
- return uri.scheme == 'dart' && uri.path.startsWith('_');
-}
-
-/// Returns `true` if [mirror] reflects a mixin application.
-bool isMixinApplication(Mirror mirror) {
- return mirror is ClassMirror && mirror.mixin != mirror;
-}
-
-/**
- * Returns the superclass of [cls] skipping unnamed mixin applications.
- *
- * For instance, for all of the following definitions this method returns [:B:].
- *
- * class A extends B {}
- * class A extends B with C1, C2 {}
- * class A extends B implements D1, D2 {}
- * class A extends B with C1, C2 implements D1, D2 {}
- * class A = B with C1, C2;
- * abstract class A = B with C1, C2 implements D1, D2;
- */
-ClassSourceMirror getSuperclass(ClassSourceMirror cls) {
- ClassSourceMirror superclass = cls.superclass;
- while (isMixinApplication(superclass) && superclass.isNameSynthetic) {
- superclass = superclass.superclass;
- }
- return superclass;
-}
-
-/**
- * Returns the mixins directly applied to [cls].
- *
- * For instance, for all of the following definitions this method returns
- * [:C1, C2:].
- *
- * class A extends B with C1, C2 {}
- * class A extends B with C1, C2 implements D1, D2 {}
- * class A = B with C1, C2;
- * abstract class A = B with C1, C2 implements D1, D2;
- */
-Iterable<ClassSourceMirror> getAppliedMixins(ClassSourceMirror cls) {
- List<ClassSourceMirror> mixins = <ClassSourceMirror>[];
- ClassSourceMirror superclass = cls.superclass;
- while (isMixinApplication(superclass) && superclass.isNameSynthetic) {
- mixins.add(superclass.mixin);
- superclass = superclass.superclass;
- }
- if (mixins.length > 1) {
- mixins = new List<ClassSourceMirror>.from(mixins.reversed);
- }
- if (isMixinApplication(cls)) {
- mixins.add(cls.mixin);
- }
- return mixins;
-}
-
-/**
- * Returns the superinterfaces directly and explicitly implemented by [cls].
- *
- * For instance, for all of the following definitions this method returns
- * [:D1, D2:].
- *
- * class A extends B implements D1, D2 {}
- * class A extends B with C1, C2 implements D1, D2 {}
- * abstract class A = B with C1, C2 implements D1, D2;
- */
-Iterable<ClassMirror> getExplicitInterfaces(ClassMirror cls) {
- if (isMixinApplication(cls)) {
- bool first = true;
- ClassMirror mixin = cls.mixin;
- bool filter(ClassMirror superinterface) {
- if (first && superinterface == mixin) {
- first = false;
- return false;
- }
- return true;
- }
- return cls.superinterfaces.where(filter);
- }
- return cls.superinterfaces;
-}
-
-final RegExp _singleLineCommentStart = new RegExp(r'^///? ?(.*)');
-final RegExp _multiLineCommentStartEnd =
- new RegExp(r'^/\*\*? ?([\s\S]*)\*/$', multiLine: true);
-final RegExp _multiLineCommentLineStart = new RegExp(r'^[ \t]*\* ?(.*)');
-
-/**
- * Pulls the raw text out of a comment (i.e. removes the comment
- * characters).
- */
-String stripComment(String comment) {
- Match match = _singleLineCommentStart.firstMatch(comment);
- if (match != null) {
- return match[1];
- }
- match = _multiLineCommentStartEnd.firstMatch(comment);
- if (match != null) {
- comment = match[1];
- var sb = new StringBuffer();
- List<String> lines = comment.split('\n');
- for (int index = 0 ; index < lines.length ; index++) {
- String line = lines[index];
- if (index == 0) {
- sb.write(line); // Add the first line unprocessed.
- continue;
- }
- sb.write('\n');
- match = _multiLineCommentLineStart.firstMatch(line);
- if (match != null) {
- sb.write(match[1]);
- } else if (index < lines.length-1 || !line.trim().isEmpty) {
- // Do not add the last line if it only contains white space.
- // This interprets cases like
- // /*
- // * Foo
- // */
- // as "\nFoo\n" and not as "\nFoo\n ".
- sb.write(line);
- }
- }
- return sb.toString();
- }
- throw new ArgumentError('Invalid comment $comment');
-}
-
-/**
- * Looks up [name] in the scope [declaration].
- *
- * If [name] is of the form 'a.b.c', 'a' is looked up in the scope of
- * [declaration] and if unresolved 'a.b' is looked in the scope of
- * [declaration]. Each identifier of the remaining suffix, 'c' or 'b.c', is
- * then looked up in the local scope of the previous result.
- *
- * For instance, assumming that [:Iterable:] is imported into the scope of
- * [declaration] via the prefix 'col', 'col.Iterable.E' finds the type
- * variable of [:Iterable:] and 'col.Iterable.contains.element' finds the
- * [:element:] parameter of the [:contains:] method on [:Iterable:].
- */
-DeclarationMirror lookupQualifiedInScope(DeclarationSourceMirror declaration,
- String name) {
- // TODO(11653): Support lookup of constructors using the [:new Foo:]
- // syntax.
- int offset = 1;
- List<String> parts = name.split('.');
- DeclarationMirror result = declaration.lookupInScope(parts[0]);
- if (result == null && parts.length > 1) {
- // Try lookup of `prefix.id`.
- result = declaration.lookupInScope('${parts[0]}.${parts[1]}');
- offset = 2;
- }
- if (result == null) return null;
- LibraryMirror library = getLibrary(result);
- while (result != null && offset < parts.length) {
- result = _lookupLocal(result, symbolOf(parts[offset++], library));
- }
- return result;
-}
-
-DeclarationMirror _lookupLocal(Mirror mirror, Symbol id) {
- DeclarationMirror result;
- if (mirror is LibraryMirror) {
- // Try member lookup.
- result = mirror.declarations[id];
- } else if (mirror is ClassMirror) {
- // Try member lookup.
- result = mirror.declarations[id];
- if (result != null) return result;
- // Try type variables.
- result = mirror.typeVariables.firstWhere(
- (TypeVariableMirror v) => v.simpleName == id, orElse: () => null);
- } else if (mirror is MethodMirror) {
- result = mirror.parameters.firstWhere(
- (ParameterMirror p) => p.simpleName == id, orElse: () => null);
- }
- return result;
-
-}
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