mirror/example/meta_prog_12.cpp

This example shows the usage of the meta-programming utilities and the intrinsic meta-functions for various meta-objects

Copyright 2008-2011 Matus Chochlik. 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 <mirror/mirror.hpp>
#include <mirror/ct_string.hpp>
#include <iostream>

struct name_printer
{
    template <typename MetaNamedObject>
    void operator()(MetaNamedObject mo) const
    {
        std::cout << mo.base_name() << std::endl;
    }
};

int main(void)
{
    using namespace mirror;
    std::cout << "Types having 'int' in their name:" << std::endl;
    mp::for_each<
        mp::only_if<
            mp::only_if<
                members<
                    MIRRORED_GLOBAL_SCOPE()
                >,
                mp::is_a<
                    mp::arg<1>,
                    meta_type_tag
                >
            >,
            cts::contains<
                static_name<
                    mp::arg<1>
                >,
                cts::string<'i','n','t'>
            >
        >
    >(name_printer());
    std::cout << std::endl;
    //
    std::cout << "Types having 'long' in their name:" << std::endl;
    mp::for_each<
        mp::only_if<
            members<
                MIRRORED_GLOBAL_SCOPE()
            >,
            mp::and_<
                mp::is_a<
                    mp::arg<1>,
                    meta_type_tag
                >,
                cts::contains<
                    static_name<
                        mp::arg<1>
                    >,
                    cts::string<'l','o','n','g'>
                >
            >
        >
    >(name_printer());
    //
    return 0;
}

/* Example of output:
 |
 | Types having 'int' in their name:
 | short int
 | int
 | long int
 | unsigned short int
 | unsigned int
 | unsigned long int
 |
 | Types having 'long' in their name:
 | long int
 | unsigned long int
 | long double
*/