boost_1_45_0/libs/xpressive/test/misc2.cpp

///////////////////////////////////////////////////////////////////////////////
// misc2.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)

#include <map>
#include <string>
#include <boost/xpressive/xpressive.hpp>
#include <boost/xpressive/regex_actions.hpp>
#include <boost/test/unit_test.hpp>

namespace xpr = boost::xpressive;
using namespace xpr;

///////////////////////////////////////////////////////////////////////////////
//
void test_complement()
{
    sregex rx1 = ~_n >> ~(set='a') >> ~(set='a','b') >> ~set['a'] >> ~_ln
        >> ~before('a') >> ~after('a') >> ~alpha >> ~range('a','b') >> ~_b >> ~as_xpr('a');

#ifndef BOOST_XPRESSIVE_NO_WREGEX
    wsregex rx2 = ~_n >> ~(set=L'a') >> ~(set=L'a',L'b') >> ~set[L'a'] >> ~_ln
        >> ~before(L'a') >> ~after(L'a') >> ~alpha >> ~range(L'a',L'b') >> ~_b >> ~as_xpr(L'a');
#endif
}

///////////////////////////////////////////////////////////////////////////////
//
void test_static_actions_in_dynamic_keep()
{
    std::string result;
    std::string str("foo");

    sregex_compiler compiler;
    compiler["rx0"] = (s1="foo")[ xpr::ref(result) = s1 ];
    sregex rx = compiler.compile("(?>(?$rx0))");

    bool ok = regex_match(str, rx);
    BOOST_CHECK(ok);
    BOOST_CHECK_EQUAL(result, "foo");
}

///////////////////////////////////////////////////////////////////////////////
//
void test_static_actions_in_static_keep()
{
    std::string result;
    std::string str("foo");

    sregex rx0 = (s1="foo")[ xpr::ref(result) = s1 ];
    sregex rx = keep(rx0);

    bool ok = regex_match(str, rx);
    BOOST_CHECK(ok);
    BOOST_CHECK_EQUAL(result, "foo");
}

///////////////////////////////////////////////////////////////////////////////
//
void test_replace_with_lambda()
{
    std::map<std::string, std::string> replacements;
    replacements["X"] = "this";
    replacements["Y"] = "that";

    std::string input("\"$(X)\" has the value \"$(Y)\""), output;
    std::string expected("\"this\" has the value \"that\"");
    sregex rx = "$(" >> (s1= +~as_xpr(')')) >> ')';

    output = regex_replace(input, rx, xpr::ref(replacements)[s1]);
    BOOST_CHECK_EQUAL(output, expected);
}

using namespace boost::unit_test;
///////////////////////////////////////////////////////////////////////////////
// init_unit_test_suite
//
test_suite* init_unit_test_suite( int argc, char* argv[] )
{
    test_suite *test = BOOST_TEST_SUITE("miscelaneous tests");

    test->add(BOOST_TEST_CASE(&test_complement));
    test->add(BOOST_TEST_CASE(&test_static_actions_in_dynamic_keep));
    test->add(BOOST_TEST_CASE(&test_static_actions_in_static_keep));
    test->add(BOOST_TEST_CASE(&test_replace_with_lambda));

    return test;
}