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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: 23 October 2003
* SUMMARY: Unescaped, unbalanced parens in a regexp should cause SyntaxError.
*
* The same would also be true for unescaped, unbalanced brackets or braces
* if we followed the ECMA-262 Ed. 3 spec on this. But it was decided for
* backward compatibility reasons to follow Perl 5, which permits
*
* 1. an unescaped, unbalanced right bracket ]
* 2. an unescaped, unbalanced left brace {
* 3. an unescaped, unbalanced right brace }
*
* If any of these should occur, Perl treats each as a literal
* character. Therefore we permit all three of these cases, even
* though not ECMA-compliant. Note Perl errors on an unescaped,
* unbalanced left bracket; so will we.
*
* See http://bugzilla.mozilla.org/show_bug.cgi?id=223273
*
*/
//-----------------------------------------------------------------------------
var UBound = 0;
var BUGNUMBER = 223273;
var summary = 'Unescaped, unbalanced parens in regexp should be a SyntaxError';
var TEST_PASSED = 'SyntaxError';
var TEST_FAILED = 'Generated an error, but NOT a SyntaxError!';
var TEST_FAILED_BADLY = 'Did not generate ANY error!!!';
var CHECK_PASSED = 'Should not generate an error';
var CHECK_FAILED = 'Generated an error!';
var status = '';
var statusitems = [];
var actual = '';
var actualvalues = [];
var expect= '';
var expectedvalues = [];
/*
* All the following contain unescaped, unbalanced parens and
* should generate SyntaxErrors. That's what we're testing for.
*
* To allow the test to compile and run, we have to hide the errors
* inside eval strings, and check they are caught at run-time.
*
* Inside such strings, remember to escape any escape character!
*/
status = inSection(1);
testThis(' /(/ ');
status = inSection(2);
testThis(' /)/ ');
status = inSection(3);
testThis(' /(abc\\)def(g/ ');
status = inSection(4);
testThis(' /\\(abc)def)g/ ');
/*
* These regexp patterns are correct and should not generate
* any errors. Note we use checkThis() instead of testThis().
*/
status = inSection(5);
checkThis(' /\\(/ ');
status = inSection(6);
checkThis(' /\\)/ ');
status = inSection(7);
checkThis(' /(abc)def\\(g/ ');
status = inSection(8);
checkThis(' /(abc\\)def)g/ ');
status = inSection(9);
checkThis(' /(abc(\\))def)g/ ');
status = inSection(10);
checkThis(' /(abc([x\\)yz]+)def)g/ ');
/*
* Unescaped, unbalanced left brackets should be a SyntaxError
*/
status = inSection(11);
testThis(' /[/ ');
status = inSection(12);
testThis(' /[abc\\]def[g/ ');
/*
* We permit unescaped, unbalanced right brackets, as does Perl.
* No error should result, even though this is not ECMA-compliant.
* Note we use checkThis() instead of testThis().
*/
status = inSection(13);
checkThis(' /]/ ');
status = inSection(14);
checkThis(' /\\[abc]def]g/ ');
/*
* These regexp patterns are correct and should not generate
* any errors. Note we use checkThis() instead of testThis().
*/
status = inSection(15);
checkThis(' /\\[/ ');
status = inSection(16);
checkThis(' /\\]/ ');
status = inSection(17);
checkThis(' /[abc]def\\[g/ ');
status = inSection(18);
checkThis(' /[abc\\]def]g/ ');
status = inSection(19);
checkThis(' /(abc[\\]]def)g/ ');
status = inSection(20);
checkThis(' /[abc(x\\]yz+)def]g/ ');
/*
* Run some tests for unbalanced braces. We again follow Perl, and
* thus permit unescaped unbalanced braces - both left and right,
* even though this is not ECMA-compliant.
*
* Note we use checkThis() instead of testThis().
*/
status = inSection(21);
checkThis(' /abc{def/ ');
status = inSection(22);
checkThis(' /abc}def/ ');
status = inSection(23);
checkThis(' /a{2}bc{def/ ');
status = inSection(24);
checkThis(' /a}b{3}c}def/ ');
/*
* These regexp patterns are correct and should not generate
* any errors. Note we use checkThis() instead of testThis().
*/
status = inSection(25);
checkThis(' /abc\\{def/ ');
status = inSection(26);
checkThis(' /abc\\}def/ ');
status = inSection(27);
checkThis(' /a{2}bc\\{def/ ');
status = inSection(28);
checkThis(' /a\\}b{3}c\\}def/ ');
//-----------------------------------------------------------------------------
test();
//-----------------------------------------------------------------------------
/*
* Invalid syntax should generate a SyntaxError
*/
function testThis(sInvalidSyntax)
{
expect = TEST_PASSED;
actual = TEST_FAILED_BADLY;
try
{
eval(sInvalidSyntax);
}
catch(e)
{
if (e instanceof SyntaxError)
actual = TEST_PASSED;
else
actual = TEST_FAILED;
}
statusitems[UBound] = status;
expectedvalues[UBound] = expect;
actualvalues[UBound] = actual;
UBound++;
}
/*
* Valid syntax shouldn't generate any errors
*/
function checkThis(sValidSyntax)
{
expect = CHECK_PASSED;
actual = CHECK_PASSED;
try
{
eval(sValidSyntax);
}
catch(e)
{
actual = CHECK_FAILED;
}
statusitems[UBound] = status;
expectedvalues[UBound] = expect;
actualvalues[UBound] = actual;
UBound++;
}
function test()
{
printBugNumber(BUGNUMBER);
printStatus(summary);
for (var i=0; i<UBound; i++)
{
reportCompare(expectedvalues[i], actualvalues[i], statusitems[i]);
}
}
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