Generate AST nodes for field initializers.

dart/frog/leg/scanner/class_element_parser.dart

 // Copyright (c) 2011, 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.
 
 class ClassElementParser extends PartialParser {
   ClassElementParser(Listener listener) : super(listener);
 
   Token parseClassBody(Token token) => fullParseClassBody(token);
 }
 
@@ skipping 30 matching lines @@
   bool isConstructor(Identifier name) {
     return enclosingElement !== null &&
            enclosingElement.kind == ElementKind.CLASS &&
            enclosingElement.name == name.source;
   }
 
   void endMethod(Token beginToken, Token endToken) {
     super.endMethod(beginToken, endToken);
     FunctionExpression method = popNode();
     pushNode(null);
-    Identifier name = method.name; // TODO(ahe): Named constructors.
+    Expression qualified = method.name;
+    Identifier name = qualified.asIdentifier();
+    if (name === null) {
+      canceler.cancel('qualified names are not implemented', node: qualified);
+    }
     ElementKind kind = isConstructor(name) ?
                        ElementKind.GENERATIVE_CONSTRUCTOR :
                        ElementKind.FUNCTION;
     Element memberElement =
         new PartialFunctionElement(name.source, beginToken, endToken,
                                    kind, method.modifiers, enclosingElement);
     enclosingElement.addMember(memberElement);
   }
 
   void endFactoryMethod(Token factoryKeyword, Token periodBeforeName,
@@ skipping 11 matching lines @@
         new PartialFunctionElement(name.source, factoryKeyword, endToken, kind,
                                    method.modifiers, enclosingElement);
     enclosingElement.addMember(memberElement);
   }
 
   void endFields(int count, Token beginToken, Token endToken) {
     super.endFields(count, beginToken, endToken);
     VariableDefinitions variableDefinitions = popNode();
     Modifiers modifiers = variableDefinitions.modifiers;
     pushNode(null);
-    void buildFieldElement(SourceString name, Node node, Element fields) {
+    void buildFieldElement(SourceString name, Element fields) {
       Element element = new VariableElement(
-          name, node, fields, ElementKind.FIELD, enclosingElement);
+          name, fields, ElementKind.FIELD, enclosingElement);
       enclosingElement.addMember(element);
     }
     buildFieldElements(modifiers, variableDefinitions.definitions,
                        buildFieldElement, beginToken, endToken);
   }
 
   void endInitializer(Token assignmentOperator) {
-    // TODO(floitsch): Remove this cancel.
-    canceler.cancel("field initializers are not implemented",
-                    token: assignmentOperator);
     pushNode(null); // Super expects an expression, but
                     // ClassElementParser just skips expressions.
     super.endInitializer(assignmentOperator);
   }
 
   void endInitializers(int count, Token beginToken, Token endToken) {
     pushNode(null);
   }
 }