Refactor Parsing to remove compiler dependency

pkg/compiler/lib/src/native/enqueue.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.
 
 import 'dart:collection' show Queue;
 
 import '../common.dart';
 import '../common/backend_api.dart' show ForeignResolver;
 import '../common/registry.dart' show Registry;
 import '../common/resolution.dart' show Resolution;
@@ skipping 448 matching lines @@
       backend.nativeData.setNativeMemberName(element, name);
     }
   }
 
   bool isIdentifier(String s) => _identifier.hasMatch(s);
 
   bool isNativeMethod(FunctionElementX element) {
     if (!backend.canLibraryUseNative(element.library)) return false;
     // Native method?
     return reporter.withCurrentElement(element, () {
-      Node node = element.parseNode(resolution.parsing);
+      Node node = element.parseNode(resolution.parsingContext);
       if (node is! FunctionExpression) return false;
       FunctionExpression functionExpression = node;
       node = functionExpression.body;
       Token token = node.getBeginToken();
       if (identical(token.stringValue, 'native')) return true;
       return false;
     });
   }
 
   void registerNativeBehavior(NativeBehavior nativeBehavior, cause) {
@@ skipping 128 matching lines @@
    * Handles JS-calls, which can be an instantiation point for types.
    *
    * For example, the following code instantiates and returns native classes
    * that are `_DOMWindowImpl` or a subtype.
    *
    *     JS('_DOMWindowImpl', 'window')
    *
    */
   void registerJsCall(Send node, ForeignResolver resolver) {
     NativeBehavior behavior = NativeBehavior.ofJsCall(
-        node, reporter, compiler.parsing, compiler.coreTypes, resolver);
+        node, reporter, compiler.parsingContext, compiler.coreTypes, resolver);
     registerNativeBehavior(behavior, node);
     nativeBehaviors[node] = behavior;
   }
 
   /**
    * Handles JS-embedded global calls, which can be an instantiation point for
    * types.
    *
    * For example, the following code instantiates and returns a String class
    *
    *     JS_EMBEDDED_GLOBAL('String', 'foo')
    *
    */
   void registerJsEmbeddedGlobalCall(Send node, ForeignResolver resolver) {
     NativeBehavior behavior = NativeBehavior.ofJsEmbeddedGlobalCall(
-        node, reporter, compiler.parsing, compiler.coreTypes, resolver);
+        node, reporter, compiler.parsingContext, compiler.coreTypes, resolver);
     registerNativeBehavior(behavior, node);
     nativeBehaviors[node] = behavior;
   }
 
   /**
    * Handles JS-compiler builtin calls, which can be an instantiation point for
    * types.
    *
    * For example, the following code instantiates and returns a String class
    *
    *     JS_BUILTIN('String', 'int2string', 0)
    *
    */
   void registerJsBuiltinCall(Send node, ForeignResolver resolver) {
     NativeBehavior behavior = NativeBehavior.ofJsBuiltinCall(
-        node, reporter, compiler.parsing, compiler.coreTypes, resolver);
+        node, reporter, compiler.parsingContext, compiler.coreTypes, resolver);
     registerNativeBehavior(behavior, node);
     nativeBehaviors[node] = behavior;
   }
 }
 
 class NativeCodegenEnqueuer extends NativeEnqueuerBase {
   final CodeEmitterTask emitter;
 
   final Set<ClassElement> doneAddSubtypes = new Set<ClassElement>();
 
@@ skipping 47 matching lines @@
     List<Element> directSubtypes =
         emitter.directSubtypes.putIfAbsent(superclass, () => <ClassElement>[]);
     directSubtypes.add(cls);
   }
 
   void logSummary(log(message)) {
     log('Compiled ${registeredClasses.length} native classes, '
         '${unusedClasses.length} native classes omitted.');
   }
 }