Mirror reflection library 0.5.13

mirror/example/factories/person_mijson.cpp

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

Copyright 2006-2010 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 <mirror/stream.hpp>
#include <mirror/utils/mijson_factory.hpp>
#include <iostream>
#include <stdexcept>

#include "./person.hpp"

int main(void)
{
    try
    {
        using namespace mirror;
        MIRROR_USING_NAMESPACE(test);
        //
        const char json[] =
            "["
            "   {"
            "       'first_name': '\\u0414\\u043C\\u0438\\u0301\\u0442\\u0440\\u0438\\u0439', "
            "       'middle_name': '\\u0418\\u0432\\u0430\\u0301\\u043D\\u043E\\u0432\\u0438\\u0446', "
            "       'family_name': '\\u041C\\u0435\\u043D\\u0414\\u0435\\u043B\\u0435\\u0301\\u0435\\u0432', "
            "       'birth_date': '1834-02-08', "
            "       'sex': 'male', "
            "       'weight': 75, "
            "       'height': 175"
            "   },"
            "   {"
            "       'first_name': 'Albert',"
            "       'family_name': 'Einstein',"
            "       'birth_date': '1879-03-14',"
            "       'sex': 'male', "
            "       'weight': 70,"
            "       'height': 170"
            "   },"
            "   {"
            "       'first_name': 'Marie',"
            "       'family_name': 'Sk\\u0142odowska-Curie',"
            "       'birth_date': '1867-11-07',"
            "       'sex': 'female', "
            "       'weight': 52,"
            "       'height': 165"
            "   }"
            "]";
        //
        mijson_factory_input in;
        mijson_factory_maker::factory<test::person>::type f = in.data();
        //
        mijson_fragment<const char*> fragment(
            json,
            json + sizeof(json) - 1
        );
        auto    i = fragment.elements().begin(),
            e = fragment.elements().end();
        int n = 0;
        while(i != e)
        {
            in.set(*i);
            // make a person from the data
            test::person pers(f());
            std::cout <<
                // and write it to std output
                stream::to_json::from(
                    pers,
                    [&n](std::ostream& out)
                    { out << "person_" << n; }
                ) << std::endl;
            test::person p(f());
            ++i;
            ++n;
        }
    }
    catch(const std::exception& error)
    {
        std::cerr << "Error: " << error.what() << std::endl;
    }
    //
    return 0;
}

/* Example of output
 |  "person_0": {
 |      "first_name": "Дми́трий",
 |      "middle_name": "Ива́новиц",
 |      "family_name": "МенДеле́ев",
 |      "birth_date": {
 |          "tm_sec": 0,
 |          "tm_min": 0,
 |          "tm_hour": 0,
 |          "tm_mday": 8,
 |          "tm_mon": 1,
 |          "tm_year": -66,
 |          "tm_wday": 0,
 |          "tm_yday": 0,
 |          "tm_isdst": -1
 |      },
 |      "sex": "male",
 |      "weight": 75,
 |      "height": 175
 |  }
 |  "person_1": {
 |      "first_name": "Albert",
 |      "middle_name": "",
 |      "family_name": "Einstein",
 |      "birth_date": {
 |          "tm_sec": 0,
 |          "tm_min": 0,
 |          "tm_hour": 0,
 |          "tm_mday": 14,
 |          "tm_mon": 2,
 |          "tm_year": -21,
 |          "tm_wday": 0,
 |          "tm_yday": 0,
 |          "tm_isdst": -1
 |      },
 |      "sex": "male",
 |      "weight": 70,
 |      "height": 170
 |  }
 |  "person_2": {
 |      "first_name": "Marie",
 |      "middle_name": "",
 |      "family_name": "Skłodowska-Curie",
 |      "birth_date": {
 |          "tm_sec": 0,
 |          "tm_min": 0,
 |          "tm_hour": 0,
 |          "tm_mday": 7,
 |          "tm_mon": 10,
 |          "tm_year": -33,
 |          "tm_wday": 0,
 |          "tm_yday": 0,
 |          "tm_isdst": -1
 |      },
 |      "sex": "female",
 |      "weight": 52,
 |      "height": 165
 |  }
 */

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.