Optimize boolean asserts

frog/world.dart

 // Copyright (c) 2011, 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.
 
 /** The one true [World]. */
 World world;
 
 /**
  * Should be called exactly once to setup singleton world.
  * Can use world.reset() to reinitialize.
@@ skipping 82 matching lines @@
   DefinedType objectType;
   DefinedType numType;
   DefinedType intType;
   DefinedType doubleType;
   DefinedType boolType;
   DefinedType stringType;
   DefinedType listType;
   DefinedType mapType;
   DefinedType functionType;
 
+  NonNullableType nonNullBool;
+
   World(this.files)
     : libraries = {}, _todo = [], _members = {}, _topNames = {},
       // TODO(jmesserly): these two types don't actually back our Date and
       // RegExp yet, so we need to add them manually.
       reader = new LibraryReader() {
   }
 
   void reset() {
     // TODO(jimhug): Use a smaller hammer in the future.
     libraries = {}; _todo = []; _members = {}; _topNames = {};
@@ skipping 14 matching lines @@
 
     objectType = _addToCoreLib('Object', true);
     numType = _addToCoreLib('num', false);
     intType = _addToCoreLib('int', false);
     doubleType = _addToCoreLib('double', false);
     boolType = _addToCoreLib('bool', false);
     stringType = _addToCoreLib('String', false);
     listType = _addToCoreLib('List', false);
     mapType = _addToCoreLib('Map', false);
     functionType = _addToCoreLib('Function', false);
+
+    nonNullBool = new NonNullableType(boolType);
   }
 
   _addMember(Member member) {
     // Private members are only visible in their own library.
     assert(!member.isPrivate);
     if (member.isStatic) {
       if (member.declaringType.isTop) {
         _addTopName(member);
       }
       return;
@@ skipping 287 matching lines @@
 
   withTiming(String name, f()) {
     final sw = new StopWatch();
     sw.start();
     var result = f();
     sw.stop();
     info('$name in ${sw.elapsedInMs()}msec');
     return result;
   }
 }