vector.hpp

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#ifndef _C4_YML_STD_VECTOR_HPP_
#define _C4_YML_STD_VECTOR_HPP_
 
#include "c4/yml/node.hpp"
#include <c4/std/vector.hpp>
#include <vector>
 
namespace c4 {
namespace yml {
 
// vector is a sequence-like type, and it requires child nodes
// in the data tree hierarchy (a SEQ node in ryml parlance).
// So it should be serialized via write()/read().
 
 
template<class V, class Alloc>
void write(c4::yml::NodeRef *n, std::vector<V, Alloc> const& vec)
{
    *n |= c4::yml::SEQ;
    for(V const& v : vec)
        n->append_child() << v;
}
 
/** read the node members, overwriting existing vector entries. */
template<class V, class Alloc>
bool read(c4::yml::ConstNodeRef const& n, std::vector<V, Alloc> *vec)
{
    C4_SUPPRESS_WARNING_GCC_WITH_PUSH("-Wuseless-cast")
    vec->resize(static_cast<size_t>(n.num_children()));
    C4_SUPPRESS_WARNING_GCC_POP
    size_t pos = 0;
    for(ConstNodeRef const child : n)
        child >> (*vec)[pos++];
    return true;
}
 
/** read the node members, overwriting existing vector entries.
 * specialization: std::vector<bool> uses std::vector<bool>::reference as
 * the return value of its operator[]. */
template<class Alloc>
bool read(c4::yml::ConstNodeRef const& n, std::vector<bool, Alloc> *vec)
{
    C4_SUPPRESS_WARNING_GCC_WITH_PUSH("-Wuseless-cast")
    vec->resize(static_cast<size_t>(n.num_children()));
    C4_SUPPRESS_WARNING_GCC_POP
    size_t pos = 0;
    bool tmp = {};
    for(ConstNodeRef const child : n)
    {
        child >> tmp;
        (*vec)[pos++] = tmp;
    }
    return true;
}
 
} // namespace yml
} // namespace c4
 
#endif // _C4_YML_STD_VECTOR_HPP_