Converted String.prototype.split with string to C++.

src/string.js

 // Copyright 2006-2009 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 539 matching lines @@
 
 
 // ECMA-262 section 15.5.4.14
 function StringSplit(separator, limit) {
   var subject = TO_STRING_INLINE(this);
   limit = (IS_UNDEFINED(limit)) ? 0xffffffff : TO_UINT32(limit);
   if (limit === 0) return [];
 
   // ECMA-262 says that if separator is undefined, the result should
   // be an array of size 1 containing the entire string.  SpiderMonkey
-  // and KJS have this behaviour only when no separator is given.  If
+  // and KJS have this behavior only when no separator is given.  If

[Erik Corry, 2010/03/15 12:57:48]

!@*%$

   // undefined is explicitly given, they convert it to a string and
   // use that.  We do as SpiderMonkey and KJS.
   if (%_ArgumentsLength() === 0) {
     return [subject];
   }
 
   var length = subject.length;
   if (!IS_REGEXP(separator)) {
     separator = TO_STRING_INLINE(separator);
     var separator_length = separator.length;
 
     // If the separator string is empty then return the elements in the subject.
     if (separator_length === 0) return %StringToArray(subject);
 
-    var result = [];
-    var start_index = 0;
-    var index;
-    while (true) {
-      if (start_index + separator_length > length ||
-          (index = %StringIndexOf(subject, separator, start_index)) === -1) {
-        result.push(SubString(subject, start_index, length));
-        break;
-      }
-      if (result.push(SubString(subject, start_index, index)) === limit) break;
-      start_index = index + separator_length;
-    }
+    var result = %StringSplit(subject, separator, limit);
 
     return result;
   }
 
   %_Log('regexp', 'regexp-split,%0S,%1r', [subject, separator]);
 
   if (length === 0) {
     if (splitMatch(separator, subject, 0, 0) != null) return [];
     return [subject];
   }
@@ skipping 353 matching lines @@
     "small", StringSmall,
     "strike", StringStrike,
     "sub", StringSub,
     "sup", StringSup,
     "toJSON", StringToJSON
   ));
 }
 
 
 SetupString();