Support factory methods.

frog/leg/ssa/builder.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 SsaBuilderTask extends CompilerTask {
   SsaBuilderTask(Compiler compiler) : super(compiler);
   String get name() => 'SSA builder';
 
   HGraph build(FunctionElement element, TreeElements elements) {
     return measure(() {
       FunctionExpression function = element.node;
       HInstruction.idCounter = 0;
       SsaBuilder builder = new SsaBuilder(compiler, elements);
       HGraph graph;
       switch (element.kind) {
-        case ElementKind.CONSTRUCTOR:
+        case ElementKind.GENERATIVE_CONSTRUCTOR:
           graph = compileConstructor(builder, function, element, elements);
           break;
-        case ElementKind.CONSTRUCTOR_BODY:
+        case ElementKind.GENERATIVE_CONSTRUCTOR_BODY:
           graph = compileConstructorBody(builder, function, element, elements);
           break;
         case ElementKind.FUNCTION:
           graph = compileMethod(builder, function, element, elements);
           break;
       }
       assert(graph.isValid());
       if (GENERATE_SSA_TRACE) {
         String name;
         if (element.enclosingElement !== null) {
           name = "${element.enclosingElement.name}.${element.name}";
-          if (element.kind == ElementKind.CONSTRUCTOR_BODY) {
+          if (element.kind == ElementKind.GENERATIVE_CONSTRUCTOR_BODY) {
             name = "$name (body)";
           }
         } else {
           name = "${element.name}";
         }
         new HTracer.singleton().traceCompilation(name);
         new HTracer.singleton().traceGraph('builder', graph);
       }
       return graph;
     });
@@ skipping 1048 matching lines @@
   }
 
   visitCatchBlock(CatchBlock node) {
     compiler.unimplemented('SsaBuilder.visitCatchBlock', node: node);
   }
 
   visitTypedef(Typedef node) {
     compiler.unimplemented('SsaBuilder.visitTypedef', node: node);
   }
 }