dart2js: Add support for static fields to new emitter.

sdk/lib/_internal/compiler/implementation/js_emitter/model.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 dart2js.new_js_emitter.model;
 
 import '../js/js.dart' as js show Expression;
 import '../constants/values.dart' show ConstantValue;
 
 class Program {
@@ skipping 17 matching lines @@
 /**
  * This class represents one output file.
  *
  * If no library is deferred, there is only one [Output] of type [MainOutput].
  */
 abstract class Output {
   bool get isMainOutput => mainOutput == this;
   MainOutput get mainOutput;
   final List<Library> libraries;
   final List<Constant> constants;
+  // TODO(floitsch): should we move static fields into libraries or classes?
+  final List<StaticField> staticNonFinalFields;
 
   /// Output file name without extension.
   final String outputFileName;
 
   Output(this.outputFileName,
          this.libraries,
+         this.staticNonFinalFields,
          this.constants);
 }
 
 /**
  * The main output file.
  *
  * This code emitted from this [Output] must be loaded first. It can then load
  * other [DeferredOutput]s.
  */
 class MainOutput extends Output {
   final js.Expression main;
   final List<Holder> holders;
 
   MainOutput(String outputFileName,
              this.main,
              List<Library> libraries,
+             List<StaticField> staticNonFinalFields,
              List<Constant> constants,
              this.holders)
-      : super(outputFileName, libraries, constants);
+      : super(outputFileName, libraries, staticNonFinalFields, constants);
 
   MainOutput get mainOutput => this;
 }
 
 /**
  * An output (file) for deferred code.
  */
 class DeferredOutput extends Output {
   final MainOutput mainOutput;
   final String name;
 
   List<Holder> get holders => mainOutput.holders;
 
   DeferredOutput(String outputFileName,
                  this.name,
                  this.mainOutput,
                  List<Library> libraries,
+                 List<StaticField> staticNonFinalFields,
                  List<Constant> constants)
-      : super(outputFileName, libraries, constants);
+      : super(outputFileName, libraries, staticNonFinalFields, constants);
 }
 
 class Constant {
   final String name;
   final Holder holder;
   final ConstantValue value;
 
   Constant(this.name, this.holder, this.value);
 }
 
 class Library {
   final String uri;
   final List<StaticMethod> statics;
   final List<Class> classes;
   Library(this.uri, this.statics, this.classes);
 }
 
+class StaticField {
+  final String name;
+  final Holder holder;

[floitsch, 2014/10/16 14:27:55]

The holder for static fields in the "isolate" object "$".
I'm not sure if we need to store it here all the time...

[kasperl, 2014/10/17 06:47:04]

Maybe add this as a comment in the code?

[floitsch, 2014/10/17 09:25:56]

Done.

+  final js.Expression code;
+  final bool isFinal;
+  final bool isLazy;
+
+  StaticField(this.name, this.holder, this.code,
+              this.isFinal, this.isLazy);
+}
+
 class Class {
   final String name;
   final Holder holder;
   Class superclass;
   final List<Method> methods;
   Class(this.name, this.holder, this.methods);
 
   void setSuperclass(Class superclass) {
     this.superclass = superclass;
   }
 
   String get superclassName
       => (superclass == null) ? "" : superclass.name;
   int get superclassHolderIndex
       => (superclass == null) ? 0 : superclass.holder.index;
 }
 
 class Method {
   final String name;
   final js.Expression code;
   Method(this.name, this.code);
 }
 
 class StaticMethod extends Method {
   final Holder holder;
   StaticMethod(String name, this.holder, js.Expression code)
       : super(name, code);
 }