Extract CallStructure from Selector.

pkg/compiler/lib/src/dart_backend/backend_ast_emitter.dart

 // Copyright (c) 2014, 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 backend_ast_emitter;
 
 import '../tree_ir/tree_ir_nodes.dart' as tree;
 import 'backend_ast_nodes.dart';
 import '../constants/expressions.dart';
 import '../constants/values.dart';
@@ skipping 1143 matching lines @@
                                    visit(exp.values[i], context)));
     List<TypeAnnotation> typeArguments = exp.type.treatAsRaw
         ? null
         : exp.type.typeArguments.map(TypeGenerator.createType).toList();
     return new LiteralMap(entries, isConst: true, typeArguments: typeArguments);
   }
 
   @override
   Expression visitConstructed(ConstructedConstantExpression exp,
                               BuilderContext<Statement> context) {
-    int positionalArgumentCount = exp.selector.positionalArgumentCount;
+    int positionalArgumentCount = exp.callStructure.positionalArgumentCount;
     List<Argument> args = new List<Argument>.generate(
         positionalArgumentCount,
         (i) => visit(exp.arguments[i], context));
-    for (int i = 0; i < exp.selector.namedArgumentCount; ++i) {
-      args.add(new NamedArgument(exp.selector.namedArguments[i],
+    for (int i = 0; i < exp.callStructure.namedArgumentCount; ++i) {
+      args.add(new NamedArgument(exp.callStructure.namedArguments[i],
           visit(exp.arguments[positionalArgumentCount + i], context)));
     }
 
     FunctionElement constructor = exp.target;
     String name = constructor.name.isEmpty ? null : constructor.name;
     return new CallNew(TypeGenerator.createType(exp.type),
                        args,
                        constructorName: name,
                        isConst: true)
                ..constructor = constructor
@@ skipping 134 matching lines @@
       : super(name, ElementKind.VARIABLE, enclosingElement, variables, null);
 
   ExecutableElement get executableContext => enclosingElement;
 
   ExecutableElement get memberContext => executableContext.memberContext;
 
   bool get isLocal => true;
 
   LibraryElement get implementationLibrary => enclosingElement.library;
 }