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

src/messages.js

Index: src/messages.js
diff --git a/src/messages.js b/src/messages.js
index 2debbf865400af7e4f429d7065e0faa256878835..0a301228d748cfe2260b7b00d97df8bd3df9d74d 100644
--- a/src/messages.js
+++ b/src/messages.js
@@ -796,7 +796,7 @@ function CallSite(receiver, fun, pos, strict_mode) {
 }
 
 function CallSiteGetThis() {
-  return this[CallSiteStrictModeKey] ? void 0 : this[CallSiteReceiverKey];
+  return this[CallSiteStrictModeKey] ? UNDEFINED : this[CallSiteReceiverKey];
 }
 
 function CallSiteGetTypeName() {
@@ -826,7 +826,7 @@ function CallSiteGetScriptNameOrSourceURL() {
 }
 
 function CallSiteGetFunction() {
-  return this[CallSiteStrictModeKey] ? void 0 : this[CallSiteFunctionKey];
+  return this[CallSiteStrictModeKey] ? UNDEFINED : this[CallSiteFunctionKey];
 }
 
 function CallSiteGetFunctionName() {
@@ -1092,7 +1092,7 @@ function FormatStackTrace(obj, error_string, frames) {
     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) {
@@ -1160,7 +1160,7 @@ function captureStackTrace(obj, cons_opt) {
     // 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;
   };
 
@@ -1171,7 +1171,7 @@ function captureStackTrace(obj, cons_opt) {
     %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;
     }
   };
 
@@ -1213,7 +1213,7 @@ function SetUpError() {
         // 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);
@@ -1251,7 +1251,7 @@ function GetPropertyWithoutInvokingMonkeyGetters(error, name) {
   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
@@ -1260,11 +1260,11 @@ function GetPropertyWithoutInvokingMonkeyGetters(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];