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