Hide RegExp and String initialization in a closure.

src/v8natives.js

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // This file relies on the fact that the following declarations have been made
 // in runtime.js:
 // var $Object = global.Object;
 // var $Boolean = global.Boolean;
 // var $Number = global.Number;
 // var $Function = global.Function;
@@ skipping 1825 matching lines @@
   var n = arguments.length;
   var p = '';
   if (n > 1) {
     p = ToString(arguments[0]);
     for (var i = 1; i < n - 1; i++) {
       p += ',' + ToString(arguments[i]);
     }
     // If the formal parameters string include ) - an illegal
     // character - it may make the combined function expression
     // compile. We avoid this problem by checking for this early on.
-    if (%_CallFunction(p, ')', StringIndexOfJS) != -1) {
+    if (%_CallFunction(p, ')', $stringIndexOf) != -1) {
       throw MakeSyntaxError('paren_in_arg_string', []);
     }
     // If the formal parameters include an unbalanced block comment, the
     // function must be rejected. Since JavaScript does not allow nested
     // comments we can include a trailing block comment to catch this.
     p += '\n\x2f**\x2f';
   }
   var body = (n > 0) ? ToString(arguments[n - 1]) : '';
   var head = '(' + function_token + '(' + p + ') {\n';
   var src = head + body + '\n})';
@@ skipping 37 matching lines @@
   }
   if (!IS_SPEC_FUNCTION(method)) {
     throw MakeTypeError('not_iterable', [obj]);
   }
   var iterator = %_CallFunction(obj, method);
   if (!IS_SPEC_OBJECT(iterator)) {
     throw MakeTypeError('not_an_iterator', [iterator]);
   }
   return iterator;
 }