boost_1_45_0/libs/spirit/test/karma/pattern2.cpp

//  Copyright (c) 2001-2010 Hartmut Kaiser
//
//  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_operator.hpp>
#include <boost/spirit/include/karma_char.hpp>
#include <boost/spirit/include/karma_auxiliary.hpp>
#include <boost/spirit/include/karma_string.hpp>
#include <boost/spirit/include/karma_numeric.hpp>
#include <boost/spirit/include/karma_nonterminal.hpp>
#include <boost/spirit/include/karma_action.hpp>
#include <boost/spirit/include/phoenix_core.hpp>
#include <boost/spirit/include/phoenix_operator.hpp>
#include <boost/spirit/include/phoenix_statement.hpp>
#include <boost/spirit/include/phoenix_fusion.hpp>

#include "test.hpp"

using namespace spirit_test;

///////////////////////////////////////////////////////////////////////////////
int main()
{
    using namespace boost;
    using namespace boost::spirit;
    using namespace boost::spirit::ascii;

    typedef spirit_test::output_iterator<char>::type outiter_type;

    // basic tests
    {
        karma::rule<outiter_type> start;

        start = char_[_1 = 'a'] << int_[_1 = 10] << double_[_1 = 12.4];
        BOOST_TEST(test("a1012.4", start));

        start = (char_ << int_ << double_)[_1 = 'a', _2 = 10, _3 = 12.4];
        BOOST_TEST(test("a1012.4", start));

        karma::rule<outiter_type> a, b, c;
        a = char_[_1 = 'a'];
        b = int_[_1 = 10];
        c = double_[_1 = 12.4];

        start = a << b << c;
        BOOST_TEST(test("a1012.4", start));
    }

    // basic tests with delimiter
    {
        karma::rule<outiter_type, space_type> start;

        start = char_[_1 = 'a'] << int_[_1 = 10] << double_[_1 = 12.4];
        BOOST_TEST(test_delimited("a 10 12.4 ", start, space));

        start = (char_ << int_ << double_)[_1 = 'a', _2 = 10, _3 = 12.4];
        BOOST_TEST(test_delimited("a 10 12.4 ", start, space));

        karma::rule<outiter_type, space_type> a, b, c;
        a = char_[_1 = 'a'];
        b = int_[_1 = 10];
        c = double_[_1 = 12.4];

        start = a << b << c;
        BOOST_TEST(test_delimited("a 10 12.4 ", start, space));
    }

    // basic tests involving a direct parameter
    {
        typedef variant<char, int, double> var_type;

        karma::rule<outiter_type, var_type()> start;

        start = (char_ | int_ | double_)[_1 = _r0];

        var_type v ('a');
        BOOST_TEST(test("a", start, v));
        v = 10;
        BOOST_TEST(test("10", start, v));
        v = 12.4;
        BOOST_TEST(test("12.4", start, v));
    }

    {
        typedef variant<char, int, double> var_type;

        karma::rule<outiter_type, space_type, var_type()> start;

        start = (char_ | int_ | double_)[_1 = _r0];

        var_type v ('a');
        BOOST_TEST(test_delimited("a ", start, v, space));
        v = 10;
        BOOST_TEST(test_delimited("10 ", start, v, space));
        v = 12.4;
        BOOST_TEST(test_delimited("12.4 ", start, v, space));
    }

    // test handling of single element fusion sequences
    {
        using boost::fusion::vector;
        karma::rule<outiter_type, vector<int>()> r = int_;

        vector<int> v(1);
        BOOST_TEST(test("1", r, v));
    }

    {
        using boost::fusion::vector;
        karma::rule<outiter_type, space_type, vector<int>()> r = int_;

        vector<int> v(1);
        BOOST_TEST(test_delimited("1 ", r, v, space));
    }

    return boost::report_errors();
}