77 lines
1.9 KiB
C++
77 lines
1.9 KiB
C++
///////////////////////////////////////////////////////////////////////////////
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// test_assert_with_placeholder.hpp
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//
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// Copyright 2008 Eric Niebler. Distributed under the Boost
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// Software License, Version 1.0. (See accompanying file
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// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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#include <boost/xpressive/xpressive.hpp>
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#include <boost/xpressive/regex_actions.hpp>
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#include <boost/test/unit_test.hpp>
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using namespace boost::xpressive;
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placeholder<int> const _cnt = {{}};
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struct count_a_impl
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{
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typedef void result_type;
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void operator()(int &cnt) const
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{
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++cnt;
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}
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};
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boost::xpressive::function<count_a_impl>::type const count_a = {{}};
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struct check_a_impl
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{
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typedef bool result_type;
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bool operator()(int &cnt, int val) const
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{
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if(cnt < val)
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{
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++cnt;
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return true;
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}
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return false;
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}
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};
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boost::xpressive::function<check_a_impl>::type const check_a = {{}};
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void test_assert_with_placeholder()
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{
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int cnt = 0;
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std::string a_str("a_aaaaa___a_aa_aaa_");
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const sregex expr1(*(as_xpr('a')[count_a(_cnt)] | '_'));
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const sregex expr2(*(as_xpr('a')[check(check_a(_cnt, 5))] | '_'));
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sregex_iterator iter1(a_str.begin(), a_str.end(), expr1,
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let(_cnt = cnt));
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BOOST_CHECK_EQUAL(iter1->str(0), a_str);
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BOOST_CHECK_EQUAL(cnt, 12);
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cnt = 0;
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sregex_iterator iter2(a_str.begin(), a_str.end(), expr2,
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let(_cnt = cnt));
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BOOST_CHECK_EQUAL(iter2->str(0), std::string("a_aaaa"));
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BOOST_CHECK_EQUAL(cnt, 5);
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}
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using namespace boost::unit_test;
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///////////////////////////////////////////////////////////////////////////////
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// init_unit_test_suite
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//
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test_suite* init_unit_test_suite( int argc, char* argv[] )
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{
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test_suite *test = BOOST_TEST_SUITE("test that custom assertions can use argument placeholders");
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test->add(BOOST_TEST_CASE(&test_assert_with_placeholder));
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return test;
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}
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