Rename ReceiverMask and ReceiverMaskSet and update comments.

pkg/compiler/lib/src/js_emitter/class_stub_generator.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.
 
 part of dart2js.js_emitter;
 
 class ClassStubGenerator {
   final Namer namer;
   final Compiler compiler;
   final JavaScriptBackend backend;
@@ skipping 30 matching lines @@
     return js('function(#, v) { return #.# = v; }',
         [args, receiver, fieldName]);
   }
 
   /**
    * Documentation wanted -- johnniwinther
    *
    * Invariant: [member] must be a declaration element.
    */
   Map<jsAst.Name, jsAst.Expression> generateCallStubsForGetter(
-      Element member, Map<Selector, ReceiverMaskSet> selectors) {
+      Element member, Map<Selector, SelectorConstraints> selectors) {
     assert(invariant(member, member.isDeclaration));
 
     // If the method is intercepted, the stub gets the
     // receiver explicitely and we need to pass it to the getter call.
     bool isInterceptedMethod = backend.isInterceptedMethod(member);
     bool isInterceptorClass =
         backend.isInterceptorClass(member.enclosingClass);
 
     const String receiverArgumentName = r'$receiver';
 
@@ skipping 55 matching lines @@
   Map<jsAst.Name, Selector> computeSelectorsForNsmHandlers() {
 
     Map<jsAst.Name, Selector> jsNames = <jsAst.Name, Selector>{};
 
     // Do not generate no such method handlers if there is no class.
     if (compiler.codegenWorld.directlyInstantiatedClasses.isEmpty) {
       return jsNames;
     }
 
     void addNoSuchMethodHandlers(String ignore,
-                                 Map<Selector, ReceiverMaskSet> selectors) {
+                                 Map<Selector, SelectorConstraints> selectors) {
       for (Selector selector in selectors.keys) {
-        ReceiverMaskSet maskSet = selectors[selector];
+        SelectorConstraints maskSet = selectors[selector];
         if (maskSet.needsNoSuchMethodHandling(selector, compiler.world)) {
           jsAst.Name jsName = namer.invocationMirrorInternalName(selector);
           jsNames[jsName] = selector;
         }
       }
     }
 
     compiler.codegenWorld.forEachInvokedName(addNoSuchMethodHandlers);
     compiler.codegenWorld.forEachInvokedGetter(addNoSuchMethodHandlers);
     compiler.codegenWorld.forEachInvokedSetter(addNoSuchMethodHandlers);
@@ skipping 135 matching lines @@
           ? function() {
               if (cache === void 0) cache = #tearOff(
                   this, funcs, reflectionInfo, true, [], name).prototype;
               return cache;
             }
           : tearOffGetter(funcs, reflectionInfo, name, isIntercepted);
     }''',  {'tearOff': tearOffAccessExpression});
 
   return <jsAst.Statement>[tearOffGetter, tearOff];
 }