Move main and isolate handling to enqueuer listeners.

pkg/compiler/lib/src/compiler.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.
 
 library dart2js.compiler_base;
 
 import 'dart:async' show EventSink, Future;
 
 import '../compiler_new.dart' as api;
 import 'closure.dart' as closureMapping show ClosureTask;
@@ skipping 602 matching lines @@
             for (Uri libraryUri in librariesToAnalyzeWhenRun) {
               enqueuer.resolution.applyImpact(computeImpactForLibrary(
                   libraryLoader.lookupLibrary(libraryUri)));
             }
           }
         }
         if (deferredLoadTask.isProgramSplit) {
           enqueuer.resolution
               .applyImpact(backend.computeDeferredLoadingImpact());
         }
-        // Elements required by enqueueHelpers are global dependencies
-        // that are not pulled in by a particular element.
-        enqueuer.resolution.applyImpact(backend.computeHelpersImpact());
         resolveLibraryMetadata();
         reporter.log('Resolving...');
+        MethodElement mainMethod;
         if (mainFunction != null && !mainFunction.isMalformed) {
           mainFunction.computeType(resolution);
+          mainMethod = mainFunction;
         }
 
-        processQueue(enqueuer.resolution, mainFunction,
+        processQueue(enqueuer.resolution, mainMethod, libraryLoader.libraries,
             onProgress: showResolutionProgress);
         enqueuer.resolution.logSummary(reporter.log);
 
         _reporter.reportSuppressedMessagesSummary();
 
         if (compilationFailed) {
           if (!options.generateCodeWithCompileTimeErrors) return;
           if (!backend
               .enableCodegenWithErrorsIfSupported(NO_LOCATION_SPANNABLE)) {
             return;
@@ skipping 37 matching lines @@
         reporter.log('Compiling...');
         phase = PHASE_COMPILING;
 
         codegenWorldBuilder.open(closedWorld);
         enqueuer.codegen.applyImpact(backend.onCodegenStart(closedWorld));
         if (compileAll) {
           libraryLoader.libraries.forEach((LibraryElement library) {
             enqueuer.codegen.applyImpact(computeImpactForLibrary(library));
           });
         }
-        processQueue(enqueuer.codegen, mainFunction,
+        processQueue(enqueuer.codegen, mainMethod, libraryLoader.libraries,
             onProgress: showCodegenProgress);
         enqueuer.codegen.logSummary(reporter.log);
 
         int programSize = backend.assembleProgram(closedWorld);
 
         if (options.dumpInfo) {
           dumpInfoTask.reportSize(programSize);
           dumpInfoTask.dumpInfo(closedWorld);
         }
 
@@ skipping 100 matching lines @@
             () => selfTask.measureSubtask("world.applyImpact", () {
                   enqueuer.applyImpact(
                       selfTask.measureSubtask("work.run", () => work.run()),
                       impactSource: work.element);
                 }));
       });
     });
   }
 
   void processQueue(Enqueuer enqueuer, MethodElement mainMethod,
+      Iterable<LibraryEntity> libraries,
       {void onProgress()}) {
     selfTask.measureSubtask("Compiler.processQueue", () {
-      enqueuer.open(impactStrategy);
-      enqueuer.applyImpact(enqueuer.nativeEnqueuer
-          .processNativeClasses(libraryLoader.libraries));
-      if (mainMethod != null && !mainMethod.isMalformed) {
-        enqueuer.applyImpact(backend.computeMainImpact(mainMethod,
-            forResolution: enqueuer.isResolutionQueue));
-      }
+      enqueuer.open(impactStrategy, mainMethod, libraries);
       if (options.verbose) {
         progress.reset();
       }
       emptyQueue(enqueuer, onProgress: onProgress);
       enqueuer.queueIsClosed = true;
       enqueuer.close();
       // Notify the impact strategy impacts are no longer needed for this
       // enqueuer.
       impactStrategy.onImpactUsed(enqueuer.impactUse);
       backend.onQueueClosed();
@@ skipping 1091 matching lines @@
 /// An element environment base on a [Compiler].
 class _CompilerElementEnvironment implements ElementEnvironment {
   final Compiler _compiler;
 
   _CompilerElementEnvironment(this._compiler);
 
   LibraryProvider get _libraryProvider => _compiler.libraryLoader;
   Resolution get _resolution => _compiler.resolution;
 
   @override
+  LibraryEntity get mainLibrary => _compiler.mainApp;
+
+  @override
+  FunctionEntity get mainFunction => _compiler.mainFunction;
+
+  @override
   ResolutionInterfaceType getThisType(ClassElement cls) {
     cls.ensureResolved(_resolution);
     return cls.thisType;
   }
 
   @override
   ResolutionInterfaceType getRawType(ClassElement cls) {
     cls.ensureResolved(_resolution);
     return cls.rawType;
   }
@@ skipping 93 matching lines @@
     if (library != null && library.isSynthesized) {
       return null;
     }
     if (library == null && required) {
       throw new SpannableAssertionFailure(
           library, "The library '${uri}' was not found.");
     }
     return library;
   }
 }