Add ClassEntity.library, MemberEntity.library and FunctionEntity.isExternal

pkg/compiler/lib/src/kernel/elements.dart

 // Copyright (c) 2017, 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.
 
 /// Entity model for elements derived from Kernel IR.
 
 import '../elements/elements.dart';
 import '../elements/entities.dart';
 
 class KLibrary implements LibraryEntity {
   /// Library index used for fast lookup in [KernelWorldBuilder].
   final int libraryIndex;
   final String name;
 
   KLibrary(this.libraryIndex, this.name);
 
   String toString() => 'library($name)';
 }
 
 class KClass implements ClassEntity {
+  final KLibrary library;
+
   /// Class index used for fast lookup in [KernelWorldBuilder].
   final int classIndex;
   final String name;
 
-  KClass(this.classIndex, this.name);
+  KClass(this.library, this.classIndex, this.name);
 
   @override
   bool get isClosure => false;
 
   String toString() => 'class($name)';
 }
 
 abstract class KMember implements MemberEntity {
+  final KLibrary library;
   final KClass enclosingClass;
   final Name _name;
   final bool _isStatic;
 
-  KMember(this.enclosingClass, this._name, {bool isStatic: false})
+  KMember(this.library, this.enclosingClass, this._name, {bool isStatic: false})
       : _isStatic = isStatic;
 
   String get name => _name.text;
 
   @override
   bool get isAssignable => false;
 
   @override
   bool get isSetter => false;
 
@@ skipping 18 matching lines @@
   @override
   bool get isTopLevel => enclosingClass == null;
 
   String get _kind;
 
   String toString() =>
       '$_kind(${enclosingClass != null ? '${enclosingClass.name}.' : ''}$name)';
 }
 
 abstract class KFunction extends KMember implements FunctionEntity {
-  KFunction(KClass enclosingClass, Name name, {bool isStatic: false})
-      : super(enclosingClass, name, isStatic: isStatic);
+  final bool isExternal;
+
+  KFunction(KLibrary library, KClass enclosingClass, Name name,
+      {bool isStatic: false, this.isExternal: false})
+      : super(library, enclosingClass, name, isStatic: isStatic);
 }
 
 abstract class KConstructor extends KFunction implements ConstructorEntity {
   /// Constructor index used for fast lookup in [KernelWorldBuilder].
   final int constructorIndex;
 
-  KConstructor(this.constructorIndex, KClass enclosingClass, Name name)
-      : super(enclosingClass, name);
+  KConstructor(this.constructorIndex, KClass enclosingClass, Name name,
+      {bool isExternal})
+      : super(enclosingClass.library, enclosingClass, name,
+            isExternal: isExternal);
 
   @override
   bool get isConstructor => true;
 
   @override
   bool get isInstanceMember => false;
 
   @override
   bool get isStatic => false;
 
   @override
   bool get isTopLevel => false;
 
   String get _kind => 'constructor';
 }
 
 class KGenerativeConstructor extends KConstructor {
-  KGenerativeConstructor(int constructorIndex, KClass enclosingClass, Name name)
-      : super(constructorIndex, enclosingClass, name);
+  KGenerativeConstructor(int constructorIndex, KClass enclosingClass, Name name,
+      {bool isExternal})
+      : super(constructorIndex, enclosingClass, name, isExternal: isExternal);
 
   @override
   bool get isFactoryConstructor => false;
 
   @override
   bool get isGenerativeConstructor => true;
 }
 
 class KFactoryConstructor extends KConstructor {
-  KFactoryConstructor(int constructorIndex, KClass enclosingClass, Name name)
-      : super(constructorIndex, enclosingClass, name);
+  KFactoryConstructor(int constructorIndex, KClass enclosingClass, Name name,
+      {bool isExternal})
+      : super(constructorIndex, enclosingClass, name, isExternal: isExternal);
 
   @override
   bool get isFactoryConstructor => true;
 
   @override
   bool get isGenerativeConstructor => false;
 }
 
 class KMethod extends KFunction {
-  KMethod(KClass enclosingClass, Name name, {bool isStatic})
-      : super(enclosingClass, name, isStatic: isStatic);
+  KMethod(KLibrary library, KClass enclosingClass, Name name,
+      {bool isStatic, bool isExternal})
+      : super(library, enclosingClass, name,
+            isStatic: isStatic, isExternal: isExternal);
 
   @override
   bool get isFunction => true;
 
   String get _kind => 'method';
 }
 
 class KGetter extends KFunction {
-  KGetter(KClass enclosingClass, Name name, {bool isStatic})
-      : super(enclosingClass, name, isStatic: isStatic);
+  KGetter(KLibrary library, KClass enclosingClass, Name name,
+      {bool isStatic, bool isExternal})
+      : super(library, enclosingClass, name,
+            isStatic: isStatic, isExternal: isExternal);
 
   @override
   bool get isGetter => true;
 
   String get _kind => 'getter';
 }
 
 class KSetter extends KFunction {
-  KSetter(KClass enclosingClass, Name name, {bool isStatic})
-      : super(enclosingClass, name, isStatic: isStatic);
+  KSetter(KLibrary library, KClass enclosingClass, Name name,
+      {bool isStatic, bool isExternal})
+      : super(library, enclosingClass, name,
+            isStatic: isStatic, isExternal: isExternal);
 
   @override
   bool get isAssignable => true;
 
   @override
   bool get isSetter => true;
 
   String get _kind => 'setter';
 }
 
 class KField extends KMember implements FieldEntity {
   /// Field index used for fast lookup in [KernelWorldBuilder].
   final int fieldIndex;
   final bool isAssignable;
 
-  KField(this.fieldIndex, KClass enclosingClass, Name name,
+  KField(this.fieldIndex, KLibrary library, KClass enclosingClass, Name name,
       {bool isStatic, this.isAssignable})
-      : super(enclosingClass, name, isStatic: isStatic);
+      : super(library, enclosingClass, name, isStatic: isStatic);
 
   @override
   bool get isField => true;
 
   String get _kind => 'field';
 }
 
 class KTypeVariable implements TypeVariableEntity {
   final Entity typeDeclaration;
   final String name;
   final int index;
 
   KTypeVariable(this.typeDeclaration, this.name, this.index);
 
   String toString() => 'type_variable(${typeDeclaration.name}.$name)';
 }
 
 class KLocalFunction implements Local {
   final String name;
   final MemberEntity memberContext;
   final Entity executableContext;
 
   KLocalFunction(this.name, this.memberContext, this.executableContext);
 
   String toString() =>
       'local_function(${memberContext.name}.${name ?? '<anonymous>'})';
 }