Extract InterceptorData from JavaScriptBackend.

pkg/compiler/lib/src/js_emitter/full_emitter/interceptor_emitter.dart

 // Copyright (c) 2013, 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.js_emitter.full_emitter.interceptor_emitter;
 
 import 'package:js_runtime/shared/embedded_names.dart' as embeddedNames;
 import '../../elements/entities.dart';
 import '../../js/js.dart' as jsAst;
 import '../../js/js.dart' show js;
 import '../../world.dart' show ClosedWorld;
 import '../js_emitter.dart' hide Emitter, EmitterFactory;
 import '../model.dart';
 import 'emitter.dart';
 
 class InterceptorEmitter extends CodeEmitterHelper {
   final ClosedWorld closedWorld;
   final Set<jsAst.Name> interceptorInvocationNames = new Set<jsAst.Name>();
 
   InterceptorEmitter(this.closedWorld);
 
   void recordMangledNameOfMemberMethod(MemberEntity member, jsAst.Name name) {
-    if (backend.isInterceptedMethod(member)) {
+    if (backend.interceptorData.isInterceptedMethod(member)) {
       interceptorInvocationNames.add(name);
     }
   }
 
   jsAst.Expression buildGetInterceptorMethod(
       jsAst.Name key, Set<ClassEntity> classes) {
     InterceptorStubGenerator stubGenerator =
         new InterceptorStubGenerator(compiler, namer, backend, closedWorld);
     jsAst.Expression function =
         stubGenerator.generateGetInterceptorMethod(classes);
 
     return function;
   }
 
   /**
    * Emit all versions of the [:getInterceptor:] method.
    */
   jsAst.Statement buildGetInterceptorMethods() {
     List<jsAst.Statement> parts = <jsAst.Statement>[];
 
     parts.add(js.comment('getInterceptor methods'));
 
     Map<jsAst.Name, Set<ClassEntity>> specializedGetInterceptors =
-        backend.specializedGetInterceptors;
+        backend.interceptorData.specializedGetInterceptors;
     List<jsAst.Name> names = specializedGetInterceptors.keys.toList()..sort();
     for (jsAst.Name name in names) {
       Set<ClassEntity> classes = specializedGetInterceptors[name];
       parts.add(js.statement('#.# = #', [
         namer.globalObjectForLibrary(backend.helpers.interceptorsLibrary),
         name,
         buildGetInterceptorMethod(name, classes)
       ]));
     }
 
     return new jsAst.Block(parts);
   }
 
   jsAst.Statement buildOneShotInterceptors() {
     List<jsAst.Statement> parts = <jsAst.Statement>[];
-    Iterable<jsAst.Name> names = backend.oneShotInterceptors.keys.toList()
-      ..sort();
+    Iterable<jsAst.Name> names =
+        backend.interceptorData.oneShotInterceptors.keys.toList()..sort();
 
     InterceptorStubGenerator stubGenerator =
         new InterceptorStubGenerator(compiler, namer, backend, closedWorld);
     String globalObject =
         namer.globalObjectForLibrary(backend.helpers.interceptorsLibrary);
     for (jsAst.Name name in names) {
       jsAst.Expression function =
           stubGenerator.generateOneShotInterceptor(name);
       parts.add(js.statement('${globalObject}.# = #', [name, function]));
     }
@@ skipping 30 matching lines @@
    */
   jsAst.Statement buildTypeToInterceptorMap(Program program) {
     jsAst.Expression array = program.typeToInterceptorMap;
     if (array == null) return js.comment("Empty type-to-interceptor map.");
 
     jsAst.Expression typeToInterceptorMap = emitter
         .generateEmbeddedGlobalAccess(embeddedNames.TYPE_TO_INTERCEPTOR_MAP);
     return js.statement('# = #', [typeToInterceptorMap, array]);
   }
 }