Move namer into javascript backend.

lib/compiler/implementation/js_backend/emitter.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.
 
 /**
  * A function element that represents a closure call. The signature is copied
  * from the given element.
  */
 class ClosureInvocationElement extends FunctionElement {
   ClosureInvocationElement(SourceString name,
@@ skipping 28 matching lines @@
   CodeBuffer mainBuffer;
   /** Shorter access to [isolatePropertiesName]. Both here in the code, as
       well as in the generated code. */
   String isolateProperties;
   String classesCollector;
   final Map<int, String> boundClosureCache;
 
   final bool generateSourceMap;
   final SourceMapBuilder sourceMapBuilder;
 
-  CodeEmitterTask(Compiler compiler, [bool generateSourceMap = false])
-      : namer = compiler.namer,
-        boundClosureBuffer = new CodeBuffer(),
+  CodeEmitterTask(Compiler compiler, this.namer,
+                  [bool generateSourceMap = false])
+      : boundClosureBuffer = new CodeBuffer(),
         mainBuffer = new CodeBuffer(),
         boundClosureCache = new Map<int, String>(),
         generateSourceMap = generateSourceMap,
         sourceMapBuilder = new SourceMapBuilder(),
         super(compiler) {
     nativeEmitter = new NativeEmitter(this);
   }
 
   String get name => 'CodeEmitter';
 
@@ skipping 409 matching lines @@
     if (member.isFunction()
         || member.isGenerativeConstructorBody()
         || member.isGetter()
         || member.isSetter()) {
       if (member.modifiers !== null && member.modifiers.isAbstract()) return;
       CodeBuffer codeBuffer = compiler.codegenWorld.generatedCode[member];
       if (codeBuffer == null) return;
       defineInstanceMember(namer.getName(member), codeBuffer);
       codeBuffer = compiler.codegenWorld.generatedBailoutCode[member];
       if (codeBuffer !== null) {
-        defineInstanceMember(compiler.namer.getBailoutName(member), codeBuffer);
+        defineInstanceMember(namer.getBailoutName(member), codeBuffer);
       }
       FunctionElement function = member;
       FunctionSignature parameters = function.computeSignature(compiler);
       if (!parameters.optionalParameters.isEmpty()) {
         addParameterStubs(member, defineInstanceMember);
       }
     } else if (!member.isField()) {
       compiler.internalError('unexpected kind: "${member.kind}"',
                              element: member);
     }
     emitExtraAccessors(member, defineInstanceMember);
   }
 
   String generateCheckedSetter(Element member, String fieldName) {
     DartType type = member.computeType(compiler);
     if (type.element.isTypeVariable()
         || type.element == compiler.dynamicClass
         || type.element == compiler.objectClass) {
       // TODO(ngeoffray): Support type checks on type parameters.
       return null;
     } else {
       SourceString helper = compiler.backend.getCheckedModeHelper(type);
       Element helperElement = compiler.findHelper(helper);
-      String helperName = compiler.namer.isolateAccess(helperElement);
-      String additionalArgument = compiler.namer.operatorIs(type.element);
+      String helperName = namer.isolateAccess(helperElement);
+      String additionalArgument = namer.operatorIs(type.element);
       return " set\$$fieldName: function(v) { "
           "this.$fieldName = $helperName(v, '$additionalArgument'); }";
     }
   }
 
   List<String> emitClassFields(ClassElement classElement, CodeBuffer buffer) {
     // If the class is never instantiated we still need to set it up for
     // inheritance purposes, but we can simplify its JavaScript constructor.
     bool isInstantiated =
         compiler.codegenWorld.instantiatedClasses.contains(classElement);
@@ skipping 780 matching lines @@
         sourceName = token.slowToString();
       }
       int totalOffset = bufferOffset + offset;
       sourceMapBuilder.addMapping(
           sourceFile, token.charOffset, sourceName, totalOffset);
     });
   }
 }
 
 typedef void DefineMemberFunction(String invocationName, CodeBuffer definition);