pjs/js/tests/ecma_3/RegExp/regress-119909.js

/* ***** BEGIN LICENSE BLOCK *****
 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
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 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (the "License"); you may not use this file except in compliance with
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 * The Original Code is JavaScript Engine testing utilities.
 *
 * The Initial Developer of the Original Code is
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 * Portions created by the Initial Developer are Copyright (C) 2001
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *   1010mozilla@Ostermiller.com, pschwartau@netscape.com
 *
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 * either the GNU General Public License Version 2 or later (the "GPL"), or
 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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 * ***** END LICENSE BLOCK *****
 *
 *
 * Date:    14 Jan 2002
 * SUMMARY: Shouldn't crash on regexps with many nested parentheses
 * See http://bugzilla.mozilla.org/show_bug.cgi?id=119909
 *
 */
//-----------------------------------------------------------------------------
var bug = 119909;
var summary = "Shouldn't crash on regexps with many nested parentheses";
var NO_BACKREFS = false;
var DO_BACKREFS = true;


//--------------------------------------------------
test();
//--------------------------------------------------


function test()
{
  enterFunc('test');
  printBugNumber(bug);
  printStatus(summary);

  testThis(500, NO_BACKREFS, 'hello', 'goodbye');
  testThis(500, DO_BACKREFS, 'hello', 'goodbye');

  exitFunc('test');
}


/*
 * Creates a regexp pattern like (((((((((hello)))))))))
 * and tests str.search(), str.match(), str.replace()
 */
function testThis(numParens, doBackRefs, strOriginal, strReplace)
{
  var openParen = doBackRefs? '(' : '(?:';
  var closeParen = ')';
  var pattern = '';
  
  for (var i=0; i<numParens; i++) {pattern += openParen;}
  pattern += strOriginal;
  for (i=0; i<numParens; i++) {pattern += closeParen;}
  var re = new RegExp(pattern);

  var res = strOriginal.search(re);
  res = strOriginal.match(re);
  res = strOriginal.replace(re, strReplace);
}