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///////////////////////////////////////////////////////////////////////////////
// test_cycles.hpp
//
// Copyright 2008 Eric Niebler. Distributed under the Boost
// Software License, Version 1.0. (See accompanying file
// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
// defining this causes regex_impl objects to be counted, allowing us to detect
// leaks portably.
#define BOOST_XPRESSIVE_DEBUG_CYCLE_TEST
#include <iostream>
#include <boost/test/unit_test.hpp>
#include <boost/xpressive/xpressive.hpp>
#if defined(_MSC_VER) && defined(_DEBUG)
# define _CRTDBG_MAP_ALLOC
# include <crtdbg.h>
#endif
using namespace boost::unit_test;
using namespace boost::xpressive;
///////////////////////////////////////////////////////////////////////////////
// test_main
// regexes referred to by other regexes are kept alive via reference counting.
// but cycles are handled naturally. the following works as expected and doesn't leak.
void test_main()
{
{
sregex v;
{
sregex a,b,c;
a = 'a' >> !by_ref(b);
//std::cout << a << std::endl;
//std::cout << b << std::endl;
//std::cout << c << std::endl;
// just for giggles
c = a;
c = epsilon >> 'a';
b = epsilon >> by_ref(c);
//std::cout << a << std::endl;
//std::cout << b << std::endl;
//std::cout << c << std::endl;
c = epsilon >> by_ref(a);
//std::cout << a << std::endl;
//std::cout << b << std::endl;
//std::cout << c << std::endl;
v = a;
}
std::string const s("aaa");
smatch m;
if(!regex_match(s, m, v))
{
BOOST_ERROR("cycle test 1 failed");
}
}
if(0 != detail::regex_impl<std::string::const_iterator>::instances)
{
BOOST_ERROR("leaks detected (cycle test 1)");
detail::regex_impl<std::string::const_iterator>::instances = 0;
}
{
sregex v;
{
sregex a,b,c;
b = epsilon >> by_ref(c);
a = 'a' >> !by_ref(b);
c = epsilon >> by_ref(a);
//std::cout << a << std::endl;
//std::cout << b << std::endl;
//std::cout << c << std::endl;
v = a;
}
std::string const s("aaa");
smatch m;
if(!regex_match(s, m, v))
{
BOOST_ERROR("cycle test 2 failed");
}
}
if(0 != detail::regex_impl<std::string::const_iterator>::instances)
{
BOOST_ERROR("leaks detected (cycle test 2)");
detail::regex_impl<std::string::const_iterator>::instances = 0;
}
{
sregex v;
{
sregex a,b,c;
b = epsilon >> by_ref(c);
c = epsilon >> by_ref(a);
a = 'a' >> !by_ref(b);
//std::cout << a << std::endl;
//std::cout << b << std::endl;
//std::cout << c << std::endl;
v = a;
}
std::string const s("aaa");
smatch m;
if(!regex_match(s, m, v))
{
BOOST_ERROR("cycle test 3 failed");
}
}
if(0 != detail::regex_impl<std::string::const_iterator>::instances)
{
BOOST_ERROR("leaks detected (cycle test 3)");
detail::regex_impl<std::string::const_iterator>::instances = 0;
}
{
sregex v;
{
sregex a,b,c;
c = epsilon >> by_ref(a);
b = epsilon >> by_ref(c);
a = 'a' >> !by_ref(b);
//std::cout << a << std::endl;
//std::cout << b << std::endl;
//std::cout << c << std::endl;
v = a;
}
std::string const s("aaa");
smatch m;
if(!regex_match(s, m, v))
{
BOOST_ERROR("cycle test 4 failed");
}
}
if(0 != detail::regex_impl<std::string::const_iterator>::instances)
{
BOOST_ERROR("leaks detected (cycle test 4)");
detail::regex_impl<std::string::const_iterator>::instances = 0;
}
{
sregex v;
{
sregex a,b,c;
a = 'a' >> !by_ref(b);
b = epsilon >> by_ref(c);
c = epsilon >> by_ref(a);
sregex d,e;
d = epsilon >> by_ref(e);
e = epsilon >> "aa";
c = d;
//std::cout << a << std::endl;
//std::cout << b << std::endl;
//std::cout << c << std::endl;
//std::cout << e << std::endl;
e = 'a' >> by_ref(c);
//std::cout << "-new loop!\n";
//std::cout << a << std::endl;
//std::cout << b << std::endl;
//std::cout << c << std::endl;
//std::cout << e << std::endl;
v = a;
//std::cout << v << std::endl;
}
std::string const s("aaa");
smatch m;
if(regex_match(s, m, v)) // OK, this shouldn't match
{
BOOST_ERROR("cycle test 5 failed");
}
}
if(0 != detail::regex_impl<std::string::const_iterator>::instances)
{
BOOST_ERROR("leaks detected (cycle test 5)");
detail::regex_impl<std::string::const_iterator>::instances = 0;
}
}
///////////////////////////////////////////////////////////////////////////////
// init_unit_test_suite
//
test_suite* init_unit_test_suite( int argc, char* argv[] )
{
test_suite *test = BOOST_TEST_SUITE("test_cycles");
test->add(BOOST_TEST_CASE(&test_main));
return test;
}
///////////////////////////////////////////////////////////////////////////////
// Debug stuff
//
namespace
{
const struct debug_init
{
debug_init()
{
#ifdef _MSC_VER
// Send warnings, errors and asserts to STDERR
_CrtSetReportMode(_CRT_WARN, _CRTDBG_MODE_FILE | _CRTDBG_MODE_DEBUG);
_CrtSetReportFile(_CRT_WARN, _CRTDBG_FILE_STDERR);
_CrtSetReportMode(_CRT_ERROR, _CRTDBG_MODE_FILE | _CRTDBG_MODE_DEBUG);
_CrtSetReportFile(_CRT_ERROR, _CRTDBG_FILE_STDERR);
_CrtSetReportMode(_CRT_ASSERT, _CRTDBG_MODE_FILE | _CRTDBG_MODE_DEBUG);
_CrtSetReportFile(_CRT_ASSERT, _CRTDBG_FILE_STDERR);
// Check for leaks at program termination
_CrtSetDbgFlag(_CRTDBG_LEAK_CHECK_DF | _CrtSetDbgFlag(_CRTDBG_REPORT_FLAG));
//_CrtSetBreakAlloc(221);
#endif
}
} dbg;
}
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