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

sdk/lib/_internal/compiler/implementation/resolution/member_impl.dart

-// 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.
-
-part of resolution.compute_members;
-
-class DeclaredMember implements Member {
-  final Name name;
-  final Element element;
-  final InterfaceType declarer;
-  final DartType type;
-  final FunctionType functionType;
-
-  DeclaredMember(this.name, this.element,
-                 this.declarer,
-                 this.type, this.functionType);
-
-  bool get isStatic => !element.isInstanceMember;
-
-  bool get isGetter => element.isGetter || (!isSetter && element.isField);
-
-  bool get isSetter => name.isSetter;
-
-  bool get isMethod => element.isFunction;
-
-  bool get isDeclaredByField => element.isField;
-
-  bool get isAbstract => false;
-
-  Member get implementation => this;
-
-  /// Returns this member as inherited from [instance].
-  ///
-  /// For instance:
-  ///   class A<T> { T m() {} }
-  ///   class B<S> extends A<S> {}
-  ///   class C<U> extends B<U> {}
-  /// The member `T m()` is declared in `A<T>` and inherited from `A<S>` into
-  /// `B` as `S m()`, and further from `B<U>` into `C` as `U m()`.
-  DeclaredMember inheritFrom(InterfaceType instance) {
-    // If the member is declared in a non-generic class its type cannot change
-    // as a result of inheritance.
-    if (!declarer.isGeneric) return this;
-    assert(declarer.element == instance.element);
-    return _newInheritedMember(instance);
-  }
-
-  InheritedMember _newInheritedMember(InterfaceType instance) {
-    return new InheritedMember(this, instance);
-  }
-
-  Iterable<Member> get declarations => <Member>[this];
-
-  int get hashCode => element.hashCode + 13 * isSetter.hashCode;
-
-  bool operator ==(other) {
-    if (other is! Member) return false;
-    return element == other.element &&
-           isSetter == other.isSetter;
-  }
-
-  String toString() {
-    StringBuffer sb = new StringBuffer();
-    printOn(sb, type);
-    return sb.toString();
-  }
-
-  void printOn(StringBuffer sb, DartType type) {
-    if (isStatic) {
-      sb.write('static ');
-    }
-    if (isAbstract) {
-      sb.write('abstract ');
-    }
-    if (isGetter) {
-      sb.write(type);
-      sb.write(' get ');
-      sb.write(name);
-    } else if (isSetter) {
-      sb.write('void set ');
-      sb.write(name.getter);
-      sb.write('(');
-      sb.write(type);
-      sb.write(' _)');
-    } else {
-      sb.write(type.getStringAsDeclared('$name'));
-    }
-  }
-}
-
-class DeclaredAbstractMember extends DeclaredMember {
-  final DeclaredMember implementation;
-
-  DeclaredAbstractMember(Name name, Element element,
-                         InterfaceType declarer,
-                         DartType type, FunctionType functionType,
-                         this.implementation)
-      : super(name, element, declarer, type, functionType);
-
-  bool get isAbstract => true;
-
-  InheritedMember _newInheritedMember(InterfaceType instance) {
-    return new InheritedAbstractMember(this, instance,
-        implementation != null ? implementation.inheritFrom(instance) : null);
-  }
-}
-
-class InheritedMember implements DeclaredMember {
-  final DeclaredMember declaration;
-  final InterfaceType instance;
-
-  InheritedMember(DeclaredMember this.declaration,
-                  InterfaceType this.instance) {
-    assert(instance.isGeneric);
-    assert(!declaration.isStatic);
-  }
-
-  Element get element => declaration.element;
-
-  Name get name => declaration.name;
-
-  InterfaceType get declarer => instance;
-
-  bool get isStatic => false;
-
-  bool get isSetter => declaration.isSetter;
-
-  bool get isGetter => declaration.isGetter;
-
-  bool get isMethod => declaration.isMethod;
-
-  bool get isDeclaredByField => declaration.isDeclaredByField;
-
-  bool get isAbstract => false;
-
-  Member get implementation => this;
-
-  DartType get type => declaration.type.substByContext(instance);
-
-  FunctionType get functionType {
-    return declaration.functionType.substByContext(instance);
-  }
-
-  DeclaredMember inheritFrom(InterfaceType newInstance) {
-    assert(() {
-      // Assert that if [instance] contains type variables, then these are
-      // defined in the declaration of [newInstance] and will therefore be
-      // substituted into the context of [newInstance] in the created member.
-      ClassElement contextClass = Types.getClassContext(instance);
-      return contextClass == null || contextClass == newInstance.element;
-    });
-    return _newInheritedMember(newInstance);
-  }
-
-  InheritedMember _newInheritedMember(InterfaceType newInstance) {
-    return new InheritedMember(declaration,
-                               instance.substByContext(newInstance));
-  }
-
-  Iterable<Member> get declarations => <Member>[this];
-
-  int get hashCode => declaration.hashCode + 17 * instance.hashCode;
-
-  bool operator ==(other) {
-    if (other is! InheritedMember) return false;
-    return declaration == other.declaration &&
-           instance == other.instance;
-  }
-
-  void printOn(StringBuffer sb, DartType type) {
-    declaration.printOn(sb, type);
-    sb.write(' inherited from $instance');
-  }
-
-  String toString() {
-    StringBuffer sb = new StringBuffer();
-    printOn(sb, instance);
-    return sb.toString();
-  }
-}
-
-class InheritedAbstractMember extends InheritedMember {
-  final DeclaredMember implementation;
-
-  InheritedAbstractMember(DeclaredMember declaration,
-                          InterfaceType instance,
-                          this.implementation)
-      : super(declaration, instance);
-
-  bool get isAbstract => true;
-
-  InheritedMember _newInheritedMember(InterfaceType newInstance) {
-    return new InheritedAbstractMember(
-        declaration,
-        instance.substByContext(newInstance),
-        implementation != null
-            ? implementation.inheritFrom(newInstance) : null);
-  }
-}
-
-
-abstract class AbstractSyntheticMember implements MemberSignature {
-  final Setlet<Member> inheritedMembers;
-
-  AbstractSyntheticMember(this.inheritedMembers);
-
-  Member get member => inheritedMembers.first;
-
-  Iterable<Member> get declarations => inheritedMembers;
-
-  Name get name => member.name;
-}
-
-
-class SyntheticMember extends AbstractSyntheticMember {
-  final DartType type;
-  final FunctionType functionType;
-
-  SyntheticMember(Setlet<Member> inheritedMembers,
-                  this.type,
-                  this.functionType)
-      : super(inheritedMembers);
-
-  bool get isSetter => member.isSetter;
-
-  bool get isGetter => member.isGetter;
-
-  bool get isMethod => member.isMethod;
-
-  bool get isErroneous => false;
-
-  String toString() => '${type.getStringAsDeclared('$name')} synthesized '
-                       'from ${inheritedMembers}';
-}
-
-class ErroneousMember extends AbstractSyntheticMember {
-  ErroneousMember(Setlet<Member> inheritedMembers) : super(inheritedMembers);
-
-  DartType get type => functionType;
-
-  FunctionType get functionType {
-    throw new UnsupportedError('Erroneous members have no type.');
-  }
-
-  bool get isSetter => false;
-
-  bool get isGetter => false;
-
-  bool get isMethod => false;
-
-  bool get isErroneous => true;
-
-  String toString() => "erroneous member '$name' synthesized "
-                       "from ${inheritedMembers}";
-}
-