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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: 19 June 2003
* SUMMARY: Testing regexp submatches with quantifiers
*
* See http://bugzilla.mozilla.org/show_bug.cgi?id=209919
*
*/
//-----------------------------------------------------------------------------
var i = 0;
var BUGNUMBER = 209919;
var summary = 'Testing regexp submatches with quantifiers';
var status = '';
var statusmessages = new Array();
var pattern = '';
var patterns = new Array();
var string = '';
var strings = new Array();
var actualmatch = '';
var actualmatches = new Array();
var expectedmatch = '';
var expectedmatches = new Array();
/*
* Waldemar: "ECMA-262 15.10.2.5, third algorithm, step 2.1 states that
* once the minimum repeat count (which is 0 for *, 1 for +, etc.) has
* been satisfied, an atom being repeated must not match the empty string."
*
* In this example, the minimum repeat count is 0, so the last thing the
* capturing parens is permitted to contain is the 'a'. It may NOT go on
* to capture the '' at the $ position of 'a', even though '' satifies
* the condition b*
*
*/
status = inSection(1);
string = 'a';
pattern = /(a|b*)*/;
actualmatch = string.match(pattern);
expectedmatch = Array(string, 'a');
addThis();
/*
* In this example, the minimum repeat count is 5, so the capturing parens
* captures the 'a', then goes on to capture the '' at the $ position of 'a'
* 4 times before it has to stop. Therefore the last thing it contains is ''.
*/
status = inSection(2);
string = 'a';
pattern = /(a|b*){5,}/;
actualmatch = string.match(pattern);
expectedmatch = Array(string, '');
addThis();
/*
* Reduction of the above examples to contain only the condition b*
* inside the capturing parens. This can be even harder to grasp!
*
* The global match is the '' at the ^ position of 'a', but the parens
* is NOT permitted to capture it since the minimum repeat count is 0!
*/
status = inSection(3);
string = 'a';
pattern = /(b*)*/;
actualmatch = string.match(pattern);
expectedmatch = Array('', undefined);
addThis();
/*
* Here we have used the + quantifier (repeat count 1) outside the parens.
* Therefore the parens must capture at least once before stopping, so it
* does capture the '' this time -
*/
status = inSection(4);
string = 'a';
pattern = /(b*)+/;
actualmatch = string.match(pattern);
expectedmatch = Array('', '');
addThis();
/*
* More complex examples -
*/
pattern = /^\-?(\d{1,}|\.{0,})*(\,\d{1,})?$/;
status = inSection(5);
string = '100.00';
actualmatch = string.match(pattern);
expectedmatch = Array(string, '00', undefined);
addThis();
status = inSection(6);
string = '100,00';
actualmatch = string.match(pattern);
expectedmatch = Array(string, '100', ',00');
addThis();
status = inSection(7);
string = '1.000,00';
actualmatch = string.match(pattern);
expectedmatch = Array(string, '000', ',00');
addThis();
//-----------------------------------------------------------------------------
test();
//-----------------------------------------------------------------------------
function addThis()
{
statusmessages[i] = status;
patterns[i] = pattern;
strings[i] = string;
actualmatches[i] = actualmatch;
expectedmatches[i] = expectedmatch;
i++;
}
function test()
{
printBugNumber(BUGNUMBER);
printStatus (summary);
testRegExp(statusmessages, patterns, strings, actualmatches, expectedmatches);
}
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