lagoon/example/for_each_09.cpp

This example shows the usage of the namespace reflection functions and range for-each utility with lambda functions and the extract and chain_mo adapters

Copyright 2008-2010 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 <lagoon/lagoon.hpp>
#include <lagoon/range/extract.hpp>
#include <lagoon/range/chain.hpp>
#include <lagoon/range/for_each.hpp>
#include <iostream>
#include "classes.hpp"

int main(void)
{
    using namespace lagoon;
    typedef shared<meta_named_scoped_object> shared_mnso;
    typedef shared<meta_type> shared_mt;
    //
    // reflect the global scope
    auto meta_gs = reflected_global_scope();
    // and then get the std, boost and the test namespaces
    auto meta_std = meta_gs->namespace_("std");
    auto meta_boost = meta_gs->namespace_("boost");
    auto meta_test = meta_gs->namespace_("test");
    // from each of these three namespaces extract only the member
    // types, then chain the resulting ranges into a single range
    // and for each of its elements use the lambda function
    // to print its base name
    for_each(
        chain_mo<meta_type>(
            extract<meta_type>(meta_std->members()),
            extract<meta_type>(meta_boost->members()),
            extract<meta_type>(meta_test->members())
        ),
        [](const shared<meta_type>& metatype)
        {
            std::cout << metatype->base_name() << std::endl;
        }
    );
    return 0;
}

/* Example of output:
string
wstring
tm
A
B
C
D
E
F
G
H
*/