ObjectsTuple.h

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#pragma once
 
#include <alib/tuple>
#include <alib/string>
 
#include <core/xmlApi.hpp>
 
namespace core {
 
template < typename ... Ts >
struct xmlApi < ext::tuple < Ts ... > > {
    static ext::tuple < Ts ... > parse ( ext::deque < sax::Token >::iterator & input );
    static bool first ( const ext::deque < sax::Token >::const_iterator & input );
    static std::string xmlTagName ( );
    static void compose ( ext::deque < sax::Token > & output, const ext::tuple < Ts ... > & data );
private:
 
    template < size_t ... I >
    static void tupleComposeHelper ( ext::deque < sax::Token > & out, const ext::tuple < Ts ... > & container, std::index_sequence < I ... > );
};
 
template < typename ... Ts >
ext::tuple < Ts ... > xmlApi < ext::tuple < Ts ... > >::parse ( ext::deque < sax::Token >::iterator & input ) {
    sax::FromXMLParserHelper::popToken ( input, sax::Token::TokenType::START_ELEMENT, xmlTagName() );
 
    ext::tuple < Ts ... > res { core::xmlApi < Ts >::parse ( input ) ... }; // NOTE buggy in gcc < 4.9.1
 
    sax::FromXMLParserHelper::popToken ( input, sax::Token::TokenType::END_ELEMENT, xmlTagName() );
 
    return res;
}
 
template < typename ... Ts >
bool xmlApi < ext::tuple < Ts ... > >::first ( const ext::deque < sax::Token >::const_iterator & input ) {
    return sax::FromXMLParserHelper::isToken ( input, sax::Token::TokenType::START_ELEMENT, xmlTagName() );
}
 
template < typename ... Ts >
std::string xmlApi < ext::tuple < Ts ... > >::xmlTagName ( ) {
    return "Tuple";
}
 
template < typename ... Ts >
void xmlApi < ext::tuple < Ts ... > >::compose ( ext::deque < sax::Token > & output, const ext::tuple < Ts ... > & input ) {
    output.emplace_back ( xmlTagName(), sax::Token::TokenType::START_ELEMENT );
 
    tupleComposeHelper ( output, input, std::make_index_sequence < ext::tuple_size < ext::tuple < Ts ... > >::value > { } );
 
    output.emplace_back ( xmlTagName(), sax::Token::TokenType::END_ELEMENT );
}
 
template < typename ... Ts >
template < size_t ... I >
void xmlApi < ext::tuple < Ts ... > >::tupleComposeHelper ( ext::deque < sax::Token > & out, const ext::tuple < Ts ... > & container, std::index_sequence < I ... > ) {
    ( core::xmlApi < Ts >::compose ( out, std::get < I > ( container ) ), ... );
}
 
} /* namespace core */