Cosmetic: Add macros for NaN, undefined and Infinity to native js code.

src/messages.js

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 778 matching lines @@
 var CallSiteStrictModeKey = %CreateSymbol("strict mode");
 
 function CallSite(receiver, fun, pos, strict_mode) {
   this[CallSiteReceiverKey] = receiver;
   this[CallSiteFunctionKey] = fun;
   this[CallSitePositionKey] = pos;
   this[CallSiteStrictModeKey] = strict_mode;
 }
 
 function CallSiteGetThis() {
-  return this[CallSiteStrictModeKey] ? void 0 : this[CallSiteReceiverKey];
+  return this[CallSiteStrictModeKey] ? UNDEFINED : this[CallSiteReceiverKey];
 }
 
 function CallSiteGetTypeName() {
   return GetTypeName(this[CallSiteReceiverKey], false);
 }
 
 function CallSiteIsToplevel() {
   if (this[CallSiteReceiverKey] == null) {
     return true;
   }
   return IS_GLOBAL(this[CallSiteReceiverKey]);
 }
 
 function CallSiteIsEval() {
   var script = %FunctionGetScript(this[CallSiteFunctionKey]);
   return script && script.compilation_type == COMPILATION_TYPE_EVAL;
 }
 
 function CallSiteGetEvalOrigin() {
   var script = %FunctionGetScript(this[CallSiteFunctionKey]);
   return FormatEvalOrigin(script);
 }
 
 function CallSiteGetScriptNameOrSourceURL() {
   var script = %FunctionGetScript(this[CallSiteFunctionKey]);
   return script ? script.nameOrSourceURL() : null;
 }
 
 function CallSiteGetFunction() {
-  return this[CallSiteStrictModeKey] ? void 0 : this[CallSiteFunctionKey];
+  return this[CallSiteStrictModeKey] ? UNDEFINED : this[CallSiteFunctionKey];
 }
 
 function CallSiteGetFunctionName() {
   // See if the function knows its own name
   var name = this[CallSiteFunctionKey].name;
   if (name) {
     return name;
   }
   name = %FunctionGetInferredName(this[CallSiteFunctionKey]);
   if (name) {
@@ skipping 245 matching lines @@
 
 // Flag to prevent recursive call of Error.prepareStackTrace.
 var formatting_custom_stack_trace = false;
 
 
 function FormatStackTrace(obj, error_string, frames) {
   if (IS_FUNCTION($Error.prepareStackTrace) && !formatting_custom_stack_trace) {
     var array = [];
     %MoveArrayContents(frames, array);
     formatting_custom_stack_trace = true;
-    var stack_trace = void 0;
+    var stack_trace = UNDEFINED;
     try {
       stack_trace = $Error.prepareStackTrace(obj, array);
     } catch (e) {
       throw e;  // The custom formatting function threw.  Rethrow.
     } finally {
       formatting_custom_stack_trace = false;
     }
     return stack_trace;
   }
 
@@ skipping 47 matching lines @@
   // The holder of this getter ('obj') may not be the receiver ('this').
   // When this getter is called the first time, we use the context values to
   // format a stack trace string and turn this accessor pair into a data
   // property (on the holder).
   var getter = function() {
     // Stack is still a raw array awaiting to be formatted.
     var result = FormatStackTrace(obj, error_string, GetStackFrames(stack));
     // Turn this accessor into a data property.
     %DefineOrRedefineDataProperty(obj, 'stack', result, NONE);
     // Release context values.
-    stack = error_string = void 0;
+    stack = error_string = UNDEFINED;
     return result;
   };
 
   // Set the 'stack' property on the receiver.  If the receiver is the same as
   // holder of this setter, the accessor pair is turned into a data property.
   var setter = function(v) {
     // Set data property on the receiver (not necessarily holder).
     %DefineOrRedefineDataProperty(this, 'stack', v, NONE);
     if (this === obj) {
       // Release context values if holder is the same as the receiver.
-      stack = error_string = void 0;
+      stack = error_string = UNDEFINED;
     }
   };
 
   %DefineOrRedefineAccessorProperty(obj, 'stack', getter, setter, DONT_ENUM);
 }
 
 
 function SetUpError() {
   // Define special error type constructors.
 
@@ skipping 21 matching lines @@
       %FunctionSetPrototype(f, new $Error());
     }
     %FunctionSetInstanceClassName(f, 'Error');
     %SetProperty(f.prototype, 'constructor', f, DONT_ENUM);
     %SetProperty(f.prototype, "name", name, DONT_ENUM);
     %SetCode(f, function(m) {
       if (%_IsConstructCall()) {
         // Define all the expected properties directly on the error
         // object. This avoids going through getters and setters defined
         // on prototype objects.
-        %IgnoreAttributesAndSetProperty(this, 'stack', void 0, DONT_ENUM);
+        %IgnoreAttributesAndSetProperty(this, 'stack', UNDEFINED, DONT_ENUM);
         if (!IS_UNDEFINED(m)) {
           %IgnoreAttributesAndSetProperty(
             this, 'message', ToString(m), DONT_ENUM);
         }
         captureStackTrace(this, f);
       } else {
         return new f(m);
       }
     });
     %SetNativeFlag(f);
@@ skipping 17 matching lines @@
 // Global list of error objects visited during ErrorToString. This is
 // used to detect cycles in error toString formatting.
 var visited_errors = new InternalArray();
 var cyclic_error_marker = new $Object();
 
 function GetPropertyWithoutInvokingMonkeyGetters(error, name) {
   // Climb the prototype chain until we find the holder.
   while (error && !%HasLocalProperty(error, name)) {
     error = %GetPrototype(error);
   }
-  if (error === null) return void 0;
+  if (IS_NULL(error)) return UNDEFINED;
   if (!IS_OBJECT(error)) return error[name];
   // If the property is an accessor on one of the predefined errors that can be
   // generated statically by the compiler, don't touch it. This is to address
   // http://code.google.com/p/chromium/issues/detail?id=69187
   var desc = %GetOwnProperty(error, name);
   if (desc && desc[IS_ACCESSOR_INDEX]) {
     var isName = name === "name";
     if (error === $ReferenceError.prototype)
-      return isName ? "ReferenceError" : void 0;
+      return isName ? "ReferenceError" : UNDEFINED;
     if (error === $SyntaxError.prototype)
-      return isName ? "SyntaxError" : void 0;
+      return isName ? "SyntaxError" : UNDEFINED;
     if (error === $TypeError.prototype)
-      return isName ? "TypeError" : void 0;
+      return isName ? "TypeError" : UNDEFINED;
   }
   // Otherwise, read normally.
   return error[name];
 }
 
 function ErrorToStringDetectCycle(error) {
   if (!%PushIfAbsent(visited_errors, error)) throw cyclic_error_marker;
   try {
     var name = GetPropertyWithoutInvokingMonkeyGetters(error, "name");
     name = IS_UNDEFINED(name) ? "Error" : TO_STRING_INLINE(name);
@@ skipping 63 matching lines @@
     %GetAndClearOverflowedStackTrace(this);
   };
 
   %DefineOrRedefineAccessorProperty(
       boilerplate, 'stack', getter, setter, DONT_ENUM);
 
   return boilerplate;
 }
 
 var kStackOverflowBoilerplate = SetUpStackOverflowBoilerplate();