Duckstation/dep/rapidyaml/include/c4/yml/std/map.hpp
2024-02-04 16:14:05 +10:00

46 lines
1 KiB
C++

#ifndef _C4_YML_STD_MAP_HPP_
#define _C4_YML_STD_MAP_HPP_
/** @file map.hpp write/read std::map to/from a YAML tree. */
#include "c4/yml/node.hpp"
#include <map>
namespace c4 {
namespace yml {
// std::map requires child nodes in the data
// tree hierarchy (a MAP node in ryml parlance).
// So it should be serialized via write()/read().
template<class K, class V, class Less, class Alloc>
void write(c4::yml::NodeRef *n, std::map<K, V, Less, Alloc> const& m)
{
*n |= c4::yml::MAP;
for(auto const& C4_RESTRICT p : m)
{
auto ch = n->append_child();
ch << c4::yml::key(p.first);
ch << p.second;
}
}
template<class K, class V, class Less, class Alloc>
bool read(c4::yml::ConstNodeRef const& n, std::map<K, V, Less, Alloc> * m)
{
K k{};
V v{};
for(auto const& C4_RESTRICT ch : n)
{
ch >> c4::yml::key(k);
ch >> v;
m->emplace(std::make_pair(std::move(k), std::move(v)));
}
return true;
}
} // namespace yml
} // namespace c4
#endif // _C4_YML_STD_MAP_HPP_