regress-119909.js - mozsearch

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/* -*- indent-tabs-mode: nil; js-indent-level: 2 -*- */

/* This Source Code Form is subject to the terms of the Mozilla Public

 * License, v. 2.0. If a copy of the MPL was not distributed with this

 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

/*

 * 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 BUGNUMBER = 119909;

var summary = "Shouldn't crash on regexps with many nested parentheses";

var NO_BACKREFS = false;

var DO_BACKREFS = true;

//--------------------------------------------------

test();

//--------------------------------------------------

function test()

  printBugNumber(BUGNUMBER);

  printStatus(summary);

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

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

  reportCompare('No Crash', 'No Crash', '');

/*

 * 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);