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regex.h: Support embedded zeros in sub_match comparisons (DR 2217) 

2014-11-13  Daniel Kruegler  <daniel.kruegler@gmail.com>

	* include/bits/regex.h: Support embedded zeros in sub_match
	comparisons (DR 2217)
	* testsuite/28_regex/sub_match/embedded_zeros_cmp.cc:
	Add test cases for embedded zeros

From-SVN: r217535
This commit is contained in:
Daniel Kruegler 2014-11-14 04:23:06 +00:00 committed by Tim Shen
parent b16abbcb85
commit b82e9b016f
3 changed files with 78 additions and 4 deletions
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7
libstdc++-v3/ChangeLog
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@ -1,3 +1,10 @@
2014-11-13 Daniel Kruegler <daniel.kruegler@gmail.com>
* include/bits/regex.h: Support embedded zeros in sub_match
comparisons (DR 2217)
* testsuite/28_regex/sub_match/embedded_zeros_cmp.cc:
Add test cases for embedded zeros
2014-11-13 Tim Shen <timshen@google.com>
PR libstdc++/63775

20
libstdc++-v3/include/bits/regex.h
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@ -1006,7 +1006,10 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
inline bool
operator==(const __sub_match_string<_Bi_iter, _Ch_traits, _Ch_alloc>& __lhs,
const sub_match<_Bi_iter>& __rhs)
{ return __rhs.compare(__lhs.c_str()) == 0; }
{
typedef typename sub_match<_Bi_iter>::string_type string_type;
return __rhs.compare(string_type(__lhs.data(), __lhs.size())) == 0;
}
/**
* @brief Tests the inequivalence of a string and a regular expression
@ -1031,7 +1034,10 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
inline bool
operator<(const __sub_match_string<_Bi_iter, _Ch_traits, _Ch_alloc>& __lhs,
const sub_match<_Bi_iter>& __rhs)
{ return __rhs.compare(__lhs.c_str()) > 0; }
{
typedef typename sub_match<_Bi_iter>::string_type string_type;
return __rhs.compare(string_type(__lhs.data(), __lhs.size())) > 0;
}
/**
* @brief Tests the ordering of a string and a regular expression submatch.
@ -1080,7 +1086,10 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
inline bool
operator==(const sub_match<_Bi_iter>& __lhs,
const __sub_match_string<_Bi_iter, _Ch_traits, _Ch_alloc>& __rhs)
{ return __lhs.compare(__rhs.c_str()) == 0; }
{
typedef typename sub_match<_Bi_iter>::string_type string_type;
return __lhs.compare(string_type(__rhs.data(), __rhs.size())) == 0;
}
/**
* @brief Tests the inequivalence of a regular expression submatch and a
@ -1105,7 +1114,10 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
inline bool
operator<(const sub_match<_Bi_iter>& __lhs,
const __sub_match_string<_Bi_iter, _Ch_traits, _Ch_alloc>& __rhs)
{ return __lhs.compare(__rhs.c_str()) < 0; }
{
typedef typename sub_match<_Bi_iter>::string_type string_type;
return __lhs.compare(string_type(__rhs.data(), __rhs.size())) < 0;
}
/**
* @brief Tests the ordering of a regular expression submatch and a string.

55
libstdc++-v3/testsuite/28_regex/sub_match/embedded_zeros_cmp.cc Normal file
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@ -0,0 +1,55 @@
// { dg-options "-std=gnu++11" }
//
// 2014-11-13 Daniel Kruegler <daniel.kruegler@gmail.com>
//
// Copyright (C) 2014 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 3, or (at your option)
// any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License along
// with this library; see the file COPYING3. If not see
// <http://www.gnu.org/licenses/>.
// 28.9.2 [re.submatch.op] sub_match members, [DR 2217]
#include <regex>
#include <string>
#include <testsuite_hooks.h>
int main()
{
bool test __attribute__((unused)) = true;
typedef char value_type;
typedef std::basic_string<value_type> string_type;
typedef std::sub_match<value_type*> sub_match_type;
const string_type test_data1("abc\0d", 4);
value_type test_data2[] = {'a', 'b', 'c'};
const string_type test_data3("abc");
sub_match_type sm;
sm.first = std::begin(test_data2);
sm.second = std::end(test_data2);
sm.matched = true;
VERIFY( test_data1 != sm );
VERIFY( sm != test_data1 );
VERIFY( sm < test_data1 );
VERIFY( !(test_data1 < sm) );
VERIFY( test_data1 > sm );
VERIFY( test_data3 == sm );
VERIFY( sm == test_data3 );
VERIFY( !(sm < test_data3) );
VERIFY( !(test_data3 < sm) );
}