boost_1_45_0/libs/spirit/test/karma/actions.cpp

/*=============================================================================
    Copyright (c) 2001-2010 Hartmut Kaiser
    Copyright (c) 2001-2010 Joel de Guzman

    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 <boost/config/warning_disable.hpp>
#include <boost/detail/lightweight_test.hpp>

#include <boost/spirit/include/karma_char.hpp>
#include <boost/spirit/include/karma_numeric.hpp>
#include <boost/spirit/include/karma_action.hpp>
#include <boost/spirit/include/karma_generate.hpp>
#include <boost/spirit/include/karma_operator.hpp>
#include <boost/bind.hpp>
#include <boost/lambda/lambda.hpp>

#include <sstream>
#include "test.hpp"

using namespace spirit_test;
using boost::spirit::unused_type;

void read1(int& i)
{
    i = 42;
}

void read2(int& i, unused_type)
{
    i = 42;
}

void read3(int& i, unused_type, bool&)
{
    i = 42;
}

void read3_fail(int& i, unused_type, bool& pass)
{
    i = 42;
    pass = false;
}

struct read_action
{
    void operator()(int& i, unused_type, unused_type) const
    {
        i = 42;
    }
};

///////////////////////////////////////////////////////////////////////////////
int main()
{
    using boost::spirit::karma::int_;
    {
        BOOST_TEST(test("42", int_[&read1]));
        BOOST_TEST(test_delimited("42 ", int_[&read1], ' '));
        BOOST_TEST(test("42", int_[&read2]));
        BOOST_TEST(test_delimited("42 ", int_[&read2], ' '));
        BOOST_TEST(test("42", int_[&read3]));
        BOOST_TEST(test_delimited("42 ", int_[&read3], ' '));
        BOOST_TEST(!test("42", int_[&read3_fail]));
        BOOST_TEST(!test_delimited("42 ", int_[&read3_fail], ' '));
    }

    {
        BOOST_TEST(test("42", int_[read_action()]));
        BOOST_TEST(test_delimited("42 ", int_[read_action()], ' '));
    }

    {
        BOOST_TEST(test("42", int_[boost::bind(&read1, _1)]));
        BOOST_TEST(test_delimited("42 ", int_[boost::bind(&read1, _1)], ' '));
        BOOST_TEST(test("42", int_[boost::bind(&read2, _1, _2)]));
        BOOST_TEST(test_delimited("42 ", int_[boost::bind(&read2, _1, _2)], ' '));
        BOOST_TEST(test("42", int_[boost::bind(&read3, _1, _2, _3)]));
        BOOST_TEST(test_delimited("42 ", int_[boost::bind(&read3, _1, _2, _3)], ' '));
    }

    {
        namespace lambda = boost::lambda;
        {
            std::stringstream strm("42");
            BOOST_TEST(test("42", int_[strm >> lambda::_1]));
        }
        {
            std::stringstream strm("42");
            BOOST_TEST(test_delimited("42 ", int_[strm >> lambda::_1], ' '));
        }
    }

    {
        BOOST_TEST(test("{42}", '{' << int_[&read1] << '}'));
        BOOST_TEST(test_delimited("{ 42 } ", '{' << int_[&read1] << '}', ' '));
        BOOST_TEST(test("{42}", '{' << int_[&read2] << '}'));
        BOOST_TEST(test_delimited("{ 42 } ", '{' << int_[&read2] << '}', ' '));
        BOOST_TEST(test("{42}", '{' << int_[&read3] << '}'));
        BOOST_TEST(test_delimited("{ 42 } ", '{' << int_[&read3] << '}', ' '));
    }

    {
        BOOST_TEST(test("{42}", '{' << int_[read_action()] << '}'));
        BOOST_TEST(test_delimited("{ 42 } ", '{' << int_[read_action()] << '}', ' '));
    }

    {
        BOOST_TEST(test("{42}", '{' << int_[boost::bind(&read1, _1)] << '}'));
        BOOST_TEST(test_delimited("{ 42 } ", 
            '{' << int_[boost::bind(&read1, _1)] << '}', ' '));
        BOOST_TEST(test("{42}", '{' << int_[boost::bind(&read2, _1, _2)] << '}'));
        BOOST_TEST(test_delimited("{ 42 } ", 
            '{' << int_[boost::bind(&read2, _1, _2)] << '}', ' '));
        BOOST_TEST(test("{42}", '{' << int_[boost::bind(&read3, _1, _2, _3)] << '}'));
        BOOST_TEST(test_delimited("{ 42 } ", 
            '{' << int_[boost::bind(&read3, _1, _2, _3)] << '}', ' '));
    }

    {
        namespace lambda = boost::lambda;
        {
            std::stringstream strm("42");
            BOOST_TEST(test("{42}", '{' << int_[strm >> lambda::_1] << '}'));
        }
        {
            std::stringstream strm("42");
            BOOST_TEST(test_delimited("{ 42 } ", 
                '{' << int_[strm >> lambda::_1] << '}', ' '));
        }
    }

    return boost::report_errors();
}