Move dart2js from sdk/lib/_internal/compiler to pkg/compiler

sdk/lib/_internal/compiler/implementation/mirrors/dart2js_instance_mirrors.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;
-
-abstract class ObjectMirrorMixin implements ObjectMirror {
-  InstanceMirror getField(Symbol fieldName) {
-    throw new UnsupportedError('ObjectMirror.getField unsupported.');
-  }
-
-  InstanceMirror setField(Symbol fieldName, Object value) {
-    throw new UnsupportedError('ObjectMirror.setField unsupported.');
-  }
-
-  InstanceMirror invoke(Symbol memberName,
-                        List positionalArguments,
-                        [Map<Symbol, dynamic> namedArguments]) {
-    throw new UnsupportedError('ObjectMirror.invoke unsupported.');
-  }
-}
-
-abstract class InstanceMirrorMixin implements InstanceMirror {
-  bool get hasReflectee => false;
-
-  get reflectee {
-    throw new UnsupportedError('InstanceMirror.reflectee unsupported.');
-  }
-
-  delegate(Invocation invocation) {
-    throw new UnsupportedError('InstanceMirror.delegate unsupported');
-  }
-}
-
-InstanceMirror _convertConstantToInstanceMirror(
-    Dart2JsMirrorSystem mirrorSystem,
-    ConstantExpression constant,
-    ConstantValue value) {
-
-  if (value.isBool) {
-    return new Dart2JsBoolConstantMirror(mirrorSystem, constant, value);
-  } else if (value.isNum) {
-    return new Dart2JsNumConstantMirror(mirrorSystem, constant, value);
-  } else if (value.isString) {
-    return new Dart2JsStringConstantMirror(mirrorSystem, constant, value);
-  } else if (value.isList) {
-    return new Dart2JsListConstantMirror(mirrorSystem, constant, value);
-  } else if (value.isMap) {
-    return new Dart2JsMapConstantMirror(mirrorSystem, constant, value);
-  } else if (value.isType) {
-    return new Dart2JsTypeConstantMirror(mirrorSystem, constant, value);
-  } else if (value.isFunction) {
-    return new Dart2JsConstantMirror(mirrorSystem, constant, value);
-  } else if (value.isNull) {
-    return new Dart2JsNullConstantMirror(mirrorSystem, constant, value);
-  } else if (value.isConstructedObject) {
-    return new Dart2JsConstructedConstantMirror(mirrorSystem, constant, value);
-  }
-  mirrorSystem.compiler.internalError(NO_LOCATION_SPANNABLE,
-      "Unexpected constant value $value");
-  return null;
-}
-
-
-////////////////////////////////////////////////////////////////////////////////
-// Mirrors on constant values used for metadata.
-////////////////////////////////////////////////////////////////////////////////
-
-class Dart2JsConstantMirror extends Object
-    with ObjectMirrorMixin, InstanceMirrorMixin {
-  final Dart2JsMirrorSystem mirrorSystem;
-  final ConstantExpression _constant;
-  final ConstantValue _value;
-
-  Dart2JsConstantMirror(this.mirrorSystem, this._constant, this._value);
-
-  String toString() {
-    if (_constant != null) {
-      return _constant.getText();
-    } else {
-      return _value.unparse();
-    }
-  }
-
-  ClassMirror get type {
-    return mirrorSystem._getTypeDeclarationMirror(
-        _value.computeType(mirrorSystem.compiler).element);
-  }
-
-  int get hashCode => 13 * _constant.hashCode;
-
-  bool operator ==(var other) {
-    if (other is! Dart2JsConstantMirror) return false;
-    return _value == other._value;
-  }
-}
-
-class Dart2JsNullConstantMirror extends Dart2JsConstantMirror {
-  Dart2JsNullConstantMirror(Dart2JsMirrorSystem mirrorSystem,
-                            ConstantExpression constant,
-                            NullConstantValue value)
-      : super(mirrorSystem, constant, value);
-
-  NullConstantValue get _value => super._value;
-
-  bool get hasReflectee => true;
-
-  get reflectee => null;
-}
-
-class Dart2JsBoolConstantMirror extends Dart2JsConstantMirror {
-  Dart2JsBoolConstantMirror(Dart2JsMirrorSystem mirrorSystem,
-                            ConstantExpression constant,
-                            BoolConstantValue value)
-      : super(mirrorSystem, constant, value);
-
-  Dart2JsBoolConstantMirror.fromBool(Dart2JsMirrorSystem mirrorSystem,
-                                     bool value)
-      : super(mirrorSystem, null,
-              value ? new TrueConstantValue() : new FalseConstantValue());
-
-  BoolConstantValue get _value => super._value;
-
-  bool get hasReflectee => true;
-
-  get reflectee => _value is TrueConstantValue;
-}
-
-class Dart2JsStringConstantMirror extends Dart2JsConstantMirror {
-  Dart2JsStringConstantMirror(Dart2JsMirrorSystem mirrorSystem,
-                              ConstantExpression constant,
-                              StringConstantValue value)
-      : super(mirrorSystem, constant, value);
-
-  Dart2JsStringConstantMirror.fromString(Dart2JsMirrorSystem mirrorSystem,
-                                         String text)
-      : super(mirrorSystem, null,
-              new StringConstantValue(new DartString.literal(text)));
-
-  StringConstantValue get _value => super._value;
-
-  bool get hasReflectee => true;
-
-  get reflectee => _value.primitiveValue.slowToString();
-}
-
-class Dart2JsNumConstantMirror extends Dart2JsConstantMirror {
-  Dart2JsNumConstantMirror(Dart2JsMirrorSystem mirrorSystem,
-                           ConstantExpression constant,
-                           NumConstantValue value)
-      : super(mirrorSystem, constant, value);
-
-  NumConstantValue get _value => super._value;
-
-  bool get hasReflectee => true;
-
-  get reflectee => _value.primitiveValue;
-}
-
-class Dart2JsListConstantMirror extends Dart2JsConstantMirror
-    implements ListInstanceMirror {
-  Dart2JsListConstantMirror(Dart2JsMirrorSystem mirrorSystem,
-                            ConstantExpression constant,
-                            ListConstantValue value)
-      : super(mirrorSystem, constant, value);
-
-  ListConstantValue get _value => super._value;
-
-  int get length => _value.length;
-
-  InstanceMirror getElement(int index) {
-    if (index < 0) throw new RangeError('Negative index');
-    if (index >= _value.length) throw new RangeError('Index out of bounds');
-    return _convertConstantToInstanceMirror(
-        mirrorSystem, null, _value.entries[index]);
-  }
-}
-
-class Dart2JsMapConstantMirror extends Dart2JsConstantMirror
-    implements MapInstanceMirror {
-  List<String> _listCache;
-
-  Dart2JsMapConstantMirror(Dart2JsMirrorSystem mirrorSystem,
-                           ConstantExpression constant,
-                           MapConstantValue value)
-      : super(mirrorSystem, constant, value);
-
-  MapConstantValue get _value => super._value;
-
-  List<String> get _list {
-    if (_listCache == null) {
-      _listCache = new List<String>(_value.length);
-      int index = 0;
-      for (StringConstantValue keyConstant in _value.keys) {
-        _listCache[index] = keyConstant.primitiveValue.slowToString();
-        index++;
-      }
-      _listCache = new UnmodifiableListView<String>(_listCache);
-    }
-    return _listCache;
-  }
-
-  int get length => _value.length;
-
-  Iterable<String> get keys {
-    return _list;
-  }
-
-  InstanceMirror getValue(String key) {
-    int index = _list.indexOf(key);
-    if (index == -1) return null;
-    return _convertConstantToInstanceMirror(
-        mirrorSystem, null, _value.values[index]);
-  }
-}
-
-class Dart2JsTypeConstantMirror extends Dart2JsConstantMirror
-    implements TypeInstanceMirror {
-
-  Dart2JsTypeConstantMirror(Dart2JsMirrorSystem mirrorSystem,
-                            ConstantExpression constant,
-                            TypeConstantValue value)
-      : super(mirrorSystem, constant, value);
-
-  TypeConstantValue get _value => super._value;
-
-  TypeMirror get representedType =>
-      mirrorSystem._convertTypeToTypeMirror(_value.representedType);
-}
-
-class Dart2JsConstructedConstantMirror extends Dart2JsConstantMirror {
-  Map<String,ConstantValue> _fieldMapCache;
-
-  Dart2JsConstructedConstantMirror(Dart2JsMirrorSystem mirrorSystem,
-                                   ConstantExpression constant,
-                                   ConstructedConstantValue value)
-      : super(mirrorSystem, constant, value);
-
-  ConstructedConstantValue get _value => super._value;
-
-  Map<String,ConstantValue> get _fieldMap {
-    if (_fieldMapCache == null) {
-      _fieldMapCache = new Map<String,ConstantValue>();
-      if (identical(_value.type.element.kind, ElementKind.CLASS)) {
-        var index = 0;
-        ClassElement element = _value.type.element;
-        element.forEachInstanceField((_, Element field) {
-          String fieldName = field.name;
-          _fieldMapCache.putIfAbsent(fieldName, () => _value.fields[index]);
-          index++;
-        }, includeSuperAndInjectedMembers: true);
-      }
-    }
-    return _fieldMapCache;
-  }
-
-  InstanceMirror getField(Symbol fieldName) {
-    String name = MirrorSystem.getName(fieldName);
-    ConstantValue fieldConstant = _fieldMap[name];
-    if (fieldConstant != null) {
-      return _convertConstantToInstanceMirror(
-          mirrorSystem, null, fieldConstant);
-    }
-    return super.getField(fieldName);
-  }
-}
-
-class Dart2JsCommentInstanceMirror extends Object
-  with ObjectMirrorMixin, InstanceMirrorMixin
-  implements CommentInstanceMirror {
-  final Dart2JsMirrorSystem mirrorSystem;
-  final String text;
-  String _trimmedText;
-
-  Dart2JsCommentInstanceMirror(this.mirrorSystem, this.text);
-
-  ClassMirror get type {
-    return mirrorSystem._getTypeDeclarationMirror(
-        mirrorSystem.compiler.documentClass);
-  }
-
-  bool get isDocComment => text.startsWith('/**') || text.startsWith('///');
-
-  String get trimmedText {
-    if (_trimmedText == null) {
-      _trimmedText = stripComment(text);
-    }
-    return _trimmedText;
-  }
-
-  InstanceMirror getField(Symbol fieldName) {
-    if (fieldName == #isDocComment) {
-      return new Dart2JsBoolConstantMirror.fromBool(mirrorSystem, isDocComment);
-    } else if (fieldName == #text) {
-      return new Dart2JsStringConstantMirror.fromString(mirrorSystem, text);
-    } else if (fieldName == #trimmedText) {
-      return new Dart2JsStringConstantMirror.fromString(mirrorSystem,
-                                                        trimmedText);
-    }
-    return super.getField(fieldName);
-  }
-}