Split World usage into open, inference, and closed world.

tests/compiler/dart2js/compiler_helper.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 compiler_helper;
 
 import 'dart:async';
 import "package:expect/expect.dart";
 
 import 'package:compiler/src/elements/elements.dart'
@@ skipping 62 matching lines @@
         trustJSInteropTypeAnnotations: trustJSInteropTypeAnnotations,
         outputProvider: outputCollector);
     await compiler.init();
     compiler.parseScript(code);
     lego.Element element = compiler.mainApp.find(entry);
     if (element == null) return null;
     compiler.phase = Compiler.PHASE_RESOLVING;
     compiler.backend.enqueueHelpers(compiler.enqueuer.resolution,
                                     compiler.globalDependencies);
     compiler.processQueue(compiler.enqueuer.resolution, element);
-    compiler.world.populate();
+    compiler.openWorld.populate();
     compiler.backend.onResolutionComplete();
     ResolutionWorkItem resolutionWork = new ResolutionWorkItem(element);
     resolutionWork.run(compiler, compiler.enqueuer.resolution);
     CodegenWorkItem work = new CodegenWorkItem(compiler, element);
     compiler.phase = Compiler.PHASE_COMPILING;
     work.run(compiler, compiler.enqueuer.codegen);
     js.JavaScriptBackend backend = compiler.backend;
     String generated = backend.getGeneratedCode(element);
     if (check != null) {
       check(generated);
@@ skipping 114 matching lines @@
   var element = compiler.mainApp.find(sourceName);
   if (element == null) {
     element = compiler.backend.helpers.interceptorsLibrary.find(sourceName);
   }
   if (element == null) {
     element = compiler.commonElements.coreLibrary.find(sourceName);
   }
   Expect.isNotNull(element, 'Could not locate $name');
   switch (how) {
     case 'exact':
-      return new types.TypeMask.exact(element, compiler.world);
+      return new types.TypeMask.exact(element, compiler.closedWorld);
     case 'nonNullExact':
-      return new types.TypeMask.nonNullExact(element, compiler.world);
+      return new types.TypeMask.nonNullExact(element, compiler.closedWorld);
     case 'subclass':
-      return new types.TypeMask.subclass(element, compiler.world);
+      return new types.TypeMask.subclass(element, compiler.closedWorld);
     case 'nonNullSubclass':
-      return new types.TypeMask.nonNullSubclass(element, compiler.world);
+      return new types.TypeMask.nonNullSubclass(element, compiler.closedWorld);
     case 'subtype':
-      return new types.TypeMask.subtype(element, compiler.world);
+      return new types.TypeMask.subtype(element, compiler.closedWorld);
     case 'nonNullSubtype':
-      return new types.TypeMask.nonNullSubtype(element, compiler.world);
+      return new types.TypeMask.nonNullSubtype(element, compiler.closedWorld);
   }
   Expect.fail('Unknown TypeMask constructor $how');
   return null;
 }
 
 String anyIdentifier = "[a-zA-Z][a-zA-Z0-9]*";
 
 String getIntTypeCheck(String variable) {
   return "\\($variable ?!== ?\\($variable ?\\| ?0\\)|"
          "\\($variable ?>>> ?0 ?!== ?$variable";
@@ skipping 48 matching lines @@
     regexp = regexp.replaceAll(xRe, '(?:$anyIdentifier)');
     final spaceRe = new RegExp('\\s+');
     regexp = regexp.replaceAll(spaceRe, '(?:\\s*)');
     if (shouldMatch) {
       Expect.isTrue(new RegExp(regexp).hasMatch(generated));
     } else {
       Expect.isFalse(new RegExp(regexp).hasMatch(generated));
     }
   });
 }