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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: 31 July 2002
* SUMMARY: Testing regexps containing octal escape sequences
* This is an elaboration of mozilla/js/tests/ecma_2/RegExp/octal-003.js
*
* See http://bugzilla.mozilla.org/show_bug.cgi?id=141078
* for a reference on octal escape sequences in regexps.
*
* NOTE:
* We will use the identities '\011' === '\u0009' === '\x09' === '\t'
*
* The first is an octal escape sequence (\(0-3)OO; O an octal digit).
* See ECMA-262 Edition 2, Section 7.7.4 "String Literals". These were
* dropped in Edition 3 but we support them for backward compatibility.
*
* The second is a Unicode escape sequence (\uHHHH; H a hex digit).
* Since octal 11 = hex 9, the two escapes define the same character.
*
* The third is a hex escape sequence (\xHH; H a hex digit).
* Since hex 09 = hex 0009, this defines the same character.
*
* The fourth is the familiar escape sequence for a horizontal tab,
* defined in the ECMA spec as having Unicode value \u0009.
*/
//-----------------------------------------------------------------------------
var i = 0;
var BUGNUMBER = 141078;
var summary = 'Testing regexps containing octal escape sequences';
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();
/*
* Test a string containing the null character '\0' followed by the string '11'
*
* 'a' + String.fromCharCode(0) + '11';
*
* Note we can't simply write 'a\011', because '\011' would be interpreted
* as the octal escape sequence for the tab character (see above).
*
* We should get no match from the regexp /.\011/, because it should be
* looking for the octal escape sequence \011, i.e. the tab character -
*
*/
status = inSection(1);
pattern = /.\011/;
string = 'a' + String.fromCharCode(0) + '11';
actualmatch = string.match(pattern);
expectedmatch = null;
addThis();
/*
* Try same thing with 'xx' in place of '11'.
*
* Should get a match now, because the octal escape sequence in the regexp
* has been reduced from \011 to \0, and '\0' is present in the string -
*/
status = inSection(2);
pattern = /.\0xx/;
string = 'a' + String.fromCharCode(0) + 'xx';
actualmatch = string.match(pattern);
expectedmatch = Array(string);
addThis();
/*
* Same thing; don't use |String.fromCharCode(0)| this time.
* There is no ambiguity in '\0xx': it is the null character
* followed by two x's, no other interpretation is possible.
*/
status = inSection(3);
pattern = /.\0xx/;
string = 'a\0xx';
actualmatch = string.match(pattern);
expectedmatch = Array(string);
addThis();
/*
* This one should produce a match. The two-character string
* 'a' + '\011' is duplicated in the pattern and test string:
*/
status = inSection(4);
pattern = /.\011/;
string = 'a\011';
actualmatch = string.match(pattern);
expectedmatch = Array(string);
addThis();
/*
* Same as above, only now, for the second character of the string,
* use the Unicode escape '\u0009' instead of the octal escape '\011'
*/
status = inSection(5);
pattern = /.\011/;
string = 'a\u0009';
actualmatch = string.match(pattern);
expectedmatch = Array(string);
addThis();
/*
* Same as above, only now for the second character of the string,
* use the hex escape '\x09' instead of the octal escape '\011'
*/
status = inSection(6);
pattern = /.\011/;
string = 'a\x09';
actualmatch = string.match(pattern);
expectedmatch = Array(string);
addThis();
/*
* Same as above, only now for the second character of the string,
* use the escape '\t' instead of the octal escape '\011'
*/
status = inSection(7);
pattern = /.\011/;
string = 'a\t';
actualmatch = string.match(pattern);
expectedmatch = Array(string);
addThis();
/*
* Return to the string from Section 1.
*
* Unlike Section 1, use the RegExp() function to create the
* regexp pattern: null character followed by the string '11'.
*
* Since this is exactly what the string is, we should get a match -
*/
status = inSection(8);
string = 'a' + String.fromCharCode(0) + '11';
pattern = RegExp(string);
actualmatch = string.match(pattern);
expectedmatch = Array(string);
addThis();
//-------------------------------------------------------------------------------------------------
test();
//-------------------------------------------------------------------------------------------------
function addThis()
{
statusmessages[i] = status;
patterns[i] = pattern;
strings[i] = string;
actualmatches[i] = actualmatch;
expectedmatches[i] = expectedmatch;
i++;
}
function test()
{
enterFunc ('test');
printBugNumber(BUGNUMBER);
printStatus (summary);
testRegExp(statusmessages, patterns, strings, actualmatches, expectedmatches);
exitFunc ('test');
}
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