Mirror reflection library - Lagoon run-time layer 0.5.13

lagoon/example/factories/tetrahedrons_script.cpp

This example shows how to use a factory created by the factory generator with a script parsing plugin to generically construct instances of classes with non default constructors, from input strings.

Copyright 2006-2011 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)

//
// We want to use Lagoon's polymorphic factories
#define LAGOON_MT_WITH_MAKE_FACTORY 1
//
// We don't need to traverse through namespace members.
// Using this CT switch can greatly improve compile times
// and the resulting executable size if namespace member
// traversal is not needed
#define LAGOON_NO_NAMESPACE_MEMBERS 1

#include <mirror/mirror_base.hpp>
#include <mirror/pre_registered/basic.hpp>
#include <mirror/pre_registered/class/std/list.hpp>
#include <lagoon/lagoon.hpp>
#include <lagoon/utils/script_factory.hpp>
#include <iostream>

#include "./tetrahedron.hpp"

int main(void)
{
    try
    {
        using namespace lagoon;
        c_str_script_factory_builder builder;
        c_str_script_factory_input in;
        auto data = in.data();
        //
        typedef std::list<test::tetrahedron> tetrahedron_list;
        auto meta_tl = reflected_class<tetrahedron_list>();
        auto tl_factory = meta_tl->make_factory(
            builder,
            raw_ptr(&data)
        );
        //
        const char input[] = "{ \
            {{{1,0,0},{0,1,0},{}},{0,0,6}}, \
            {{{2,0,0},{0,2,0},{0.0}},{0,0,3}}, \
            {{0,0,0},{2,0,0},{0,2,0},{0,0,3}}, \
            {{{1,0,0},{0,2,0},{0,0,0}},{0,0,3}}, \
            {{3,0,0},{0,4,0},{0,0,0},{0,0,1}} \
        }";
        in.set(input, input+sizeof(input));
        // use the factory to create a list of tetrahedrons
        raw_ptr ptl = tl_factory->new_();
        tetrahedron_list& tl = *raw_cast<tetrahedron_list*>(ptl);
        for(auto i = tl.begin(), e = tl.end(); i != e; ++i)
        {
            std::cout << "the volume is " << i->volume() << " " << std::flush;
            std::cout << "the area of the base is " << i->base.area() << std::endl;
        }
        meta_tl->delete_(ptl);
    }
    catch(std::exception const& error)
    {
        std::cerr << "Error: " << error.what() << std::endl;
    }
    //
    return 0;
}

/* Example of output:
the volume is 1 the area of the base is 0.5
the volume is 2 the area of the base is 2
the volume is 2 the area of the base is 2
the volume is 1 the area of the base is 1
the volume is 2 the area of the base is 6
 */

Copyright © 2006-2011 Matus Chochlik, University of Zilina, Zilina, Slovakia.
<matus.chochlik -at- fri.uniza.sk>
<chochlik -at -gmail.com>
Documentation generated on Fri Dec 16 2011 by Doxygen (version 1.7.3).
Important note: Although the 'boostified' version of Mirror uses the Boost C++ libraries Coding Guidelines and is implemented inside of the boost namespace, it IS NOT an officially reviewed and accepted Boost library. Mirror is being developed with the intention to be submitted for review for inclusion to the Boost C++ libraries.