Find diagnostic locations for use in new compiler API.

dart/frog/leg/elements/elements.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.
 
 #library('elements');
 
 #import('../tree/tree.dart');
 #import('../scanner/scannerlib.dart');
 #import('../leg.dart');  // TODO(karlklose): we only need type.
 #import('../util/util.dart');
@@ skipping 580 matching lines @@
   }
 
   Token position() => constructor.position();
 }
 
 class SynthesizedConstructorElement extends FunctionElement {
   SynthesizedConstructorElement(Element enclosing)
     : super(enclosing.name, ElementKind.GENERATIVE_CONSTRUCTOR,
             null, enclosing);
 
-  FunctionType computeType(Compiler compiler) {
-    if (type != null) return type;
-    Type returnType = compiler.types.voidType;
-    type = new FunctionType(returnType, const EmptyLink<Type>(), this);
-    return type;
-  }
-
-  Node parseNode(DiagnosticListener listener) {
-    if (cachedNode != null) return cachedNode;
-    cachedNode = new FunctionExpression(
-        new Identifier(enclosingElement.position()),
-        new NodeList.empty(),
-        new Block(new NodeList.empty()),
-        null, null, null, null);
-    return cachedNode;
-  }
-
-  Token position() => null;
+  Token position() => enclosing.position();
 }
 
 class ClassElement extends ContainerElement {
   Type type;
   Type supertype;
   Type defaultClass;
   Link<Element> members = const EmptyLink<Element>();
   Map<SourceString, Element> localMembers;
   Map<SourceString, Element> constructors;
   Link<Type> interfaces = const EmptyLink<Type>();
   bool isResolved = false;
   bool isBeingResolved = false;
   // backendMembers are members that have been added by the backend to simplify
   // compilation. They don't have any user-side counter-part.
   Link<Element> backendMembers = const EmptyLink<Element>();
-  SynthesizedConstructorElement synthesizedConstructor;
 
   Link<Type> allSupertypes;
 
   ClassElement(SourceString name, CompilationUnitElement enclosing)
     : localMembers = new Map<SourceString, Element>(),
       constructors = new Map<SourceString, Element>(),
       super(name, ElementKind.CLASS, enclosing);
 
   void addMember(Element element, DiagnosticListener listener) {
     members = members.prepend(element);
@@ skipping 50 matching lines @@
     } else {
       normalizedName = className;
     }
     Element result = constructors[normalizedName];
     if (result === null && noMatch !== null) {
       result = noMatch(lookupLocalMember(constructorName));
     }
     return result;
   }
 
-  bool canHaveDefaultConstructor() => constructors.length == 0;
-
-  SynthesizedConstructorElement getSynthesizedConstructor() {
-    // TODO(ahe): Get rid of this method. Add the
-    // SynthesizedConstructorElement to [constructors] if empty when
-    // [resolve] is called.
-    if (synthesizedConstructor === null && canHaveDefaultConstructor()) {
-      synthesizedConstructor = new SynthesizedConstructorElement(this);
-    }
-    return synthesizedConstructor;
-  }
-
   /**
    * Returns the super class, if any.
    *
    * The returned element may not be resolved yet.
    */
   ClassElement get superclass() {
     assert(isResolved);
     return supertype === null ? null : supertype.element;
   }
 
@@ skipping 143 matching lines @@
 
   LabelElement addLabel(Identifier label, String labelName) {
     LabelElement result = new LabelElement(label, labelName, this,
                                            enclosingElement);
     labels = labels.prepend(result);
     return result;
   }
 
   Node parseNode(DiagnosticListener l) => statement;
 }