зеркало из https://github.com/mozilla/pjs.git
141 строка
4.7 KiB
JavaScript
141 строка
4.7 KiB
JavaScript
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* pschwartau@netscape.com
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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/*
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* Date: 23 October 2001
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*
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* SUMMARY: Testing regexps with the global flag set.
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* NOT every substring fitting the given pattern will be matched.
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* The parent string is CONSUMED as successive matches are found.
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*
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* From the ECMA-262 Final spec:
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*
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* 15.10.6.2 RegExp.prototype.exec(string)
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* Performs a regular expression match of string against the regular
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* expression and returns an Array object containing the results of
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* the match, or null if the string did not match.
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*
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* The string ToString(string) is searched for an occurrence of the
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* regular expression pattern as follows:
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*
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* 1. Let S be the value of ToString(string).
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* 2. Let length be the length of S.
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* 3. Let lastIndex be the value of the lastIndex property.
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* 4. Let i be the value of ToInteger(lastIndex).
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* 5. If the global property is false, let i = 0.
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* 6. If i < 0 or i > length then set lastIndex to 0 and return null.
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* 7. Call [[Match]], giving it the arguments S and i.
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* If [[Match]] returned failure, go to step 8;
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* otherwise let r be its State result and go to step 10.
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* 8. Let i = i+1.
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* 9. Go to step 6.
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* 10. Let e be r's endIndex value.
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* 11. If the global property is true, set lastIndex to e.
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*
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* etc.
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*
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*
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* So when the global flag is set, |lastIndex| is incremented every time
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* there is a match; not from i to i+1, but from i to "endIndex" e:
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*
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* e = (index of last input character matched so far by the pattern) + 1
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*
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* Thus in the example below, the first endIndex e occurs after the
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* first match 'a b'. The next match will begin AFTER this, and so
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* will NOT be 'b c', but rather 'c d'. Similarly, 'd e' won't be matched.
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*/
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//-----------------------------------------------------------------------------
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var gTestfile = '15.10.6.2-1.js';
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var i = 0;
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var BUGNUMBER = '(none)';
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var summary = 'Testing regexps with the global flag set';
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var status = '';
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var statusmessages = new Array();
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var pattern = '';
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var patterns = new Array();
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var string = '';
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var strings = new Array();
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var actualmatch = '';
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var actualmatches = new Array();
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var expectedmatch = '';
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var expectedmatches = new Array();
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status = inSection(1);
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string = 'a b c d e';
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pattern = /\w\s\w/g;
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actualmatch = string.match(pattern);
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expectedmatch = ['a b','c d']; // see above explanation -
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addThis();
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status = inSection(2);
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string = '12345678';
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pattern = /\d\d\d/g;
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actualmatch = string.match(pattern);
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expectedmatch = ['123','456'];
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addThis();
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//-----------------------------------------------------------------------------
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test();
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//-----------------------------------------------------------------------------
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function addThis()
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{
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statusmessages[i] = status;
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patterns[i] = pattern;
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strings[i] = string;
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actualmatches[i] = actualmatch;
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expectedmatches[i] = expectedmatch;
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i++;
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}
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function test()
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{
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enterFunc ('test');
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printBugNumber(BUGNUMBER);
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printStatus (summary);
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testRegExp(statusmessages, patterns, strings, actualmatches, expectedmatches);
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exitFunc ('test');
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}
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