Change assert implementation to not depend on a top-level function called 'assert'.

lib/compiler/implementation/ssa/codegen.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.
 
 class SsaCodeGeneratorTask extends CompilerTask {
 
   final JavaScriptBackend backend;
 
   SsaCodeGeneratorTask(JavaScriptBackend backend)
       : this.backend = backend,
@@ skipping 1696 matching lines @@
     for (int i = 0; i < inputs.length; i++) {
       use(inputs[i]);
       arguments.add(pop());
     }
     // TODO(floitsch): jsClassReference is an Access. We shouldn't treat it
     // as if it was a string.
     push(new js.New(new js.VariableUse(jsClassReference), arguments), node);
   }
 
   void generateConstant(Constant constant) {
-    Namer namer = backend.namer;
-    if (!constant.isObject()) {
+    ConstantHandler handler = compiler.constantHandler;
+    String name = handler.getNameForConstant(constant);
+    if (name === null) {
+      assert(!constant.isObject());
       if (constant.isBool()) {
         push(new js.LiteralBool((constant as BoolConstant).value));
       } else if (constant.isNum()) {
         // TODO(floitsch): get rid of the code buffer.
         CodeBuffer buffer = new CodeBuffer();
-        backend.emitter.writeConstantToBuffer(constant, buffer);
+        handler.writeConstant(buffer, constant);
         push(new js.LiteralNumber(buffer.toString()));
       } else if (constant.isNull()) {
         push(new js.LiteralNull());
       } else if (constant.isString()) {
         // TODO(floitsch): get rid of the code buffer.
         CodeBuffer buffer = new CodeBuffer();
-        backend.emitter.writeConstantToBuffer(constant, buffer);
+        handler.writeConstant(buffer, constant);
         push(new js.LiteralString(buffer.toString()));
       } else if (constant.isFunction()) {
         FunctionConstant function = constant;
         world.registerStaticUse(function.element);
-        push(new js.VariableUse(namer.isolateAccess(function.element)));
+        push(new js.VariableUse(
+            backend.namer.isolateAccess(function.element)));
       } else if (constant.isSentinel()) {
         // TODO(floitsch): get rid of the code buffer.
         CodeBuffer buffer = new CodeBuffer();
-        backend.emitter.writeConstantToBuffer(constant, buffer);
+        handler.writeConstant(buffer, constant);
         push(new js.VariableUse(buffer.toString()));
       } else {
         compiler.internalError(
             "The compiler does not know how generate code for "
             "constant $constant");
       }
     } else {
-      String name = namer.constantName(constant);
       js.VariableUse currentIsolateUse =
           new js.VariableUse(backend.namer.CURRENT_ISOLATE);
       push(new js.PropertyAccess.field(currentIsolateUse, name));
     }
   }
 
   visitConstant(HConstant node) {
     assert(isGenerateAtUseSite(node));
     generateConstant(node.constant);
   }
@@ skipping 1174 matching lines @@
   if (leftType.canBeNull() && rightType.canBeNull()) {
     if (left.isConstantNull() || right.isConstantNull() ||
         (leftType.isPrimitive() && leftType == rightType)) {
       return '==';
     }
     return null;
   } else {
     return '===';
   }
 }