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#ifndef RFL_JSON_WRITE_HPP_
#define RFL_JSON_WRITE_HPP_
#include <stdexcept>
#if __has_include(<yyjson.h>)
#include <yyjson.h>
#else
#include "../thirdparty/yyjson.h"
#endif
#include <ostream>
#include <sstream>
#include <string>
#include "../Processors.hpp"
#include "../parsing/Parent.hpp"
#include "Parser.hpp"
namespace rfl {
namespace json {
/// Convenient alias for the YYJSON pretty flag
inline constexpr yyjson_write_flag pretty = YYJSON_WRITE_PRETTY;
/// Returns a JSON string.
template <class... Ps>
std::string write(const auto& _obj, const yyjson_write_flag _flag = 0) {
using T = std::remove_cvref_t<decltype(_obj)>;
using ParentType = parsing::Parent<Writer>;
auto w = Writer(yyjson_mut_doc_new(NULL));
Parser<T, Processors<Ps...>>::write(w, _obj, typename ParentType::Root{});
yyjson_write_err err;
const char* json_c_str =
yyjson_mut_write_opts(w.doc_, _flag, NULL, NULL, &err);
if (!json_c_str) {
throw std::runtime_error("An error occured while writing to JSON: " +
std::string(err.msg));
}
const auto json_str = std::string(json_c_str);
free((void*)json_c_str);
yyjson_mut_doc_free(w.doc_);
return json_str;
}
/// Writes a JSON into an ostream.
template <class... Ps>
std::ostream& write(const auto& _obj, std::ostream& _stream,
const yyjson_write_flag _flag = 0) {
using T = std::remove_cvref_t<decltype(_obj)>;
using ParentType = parsing::Parent<Writer>;
auto w = Writer(yyjson_mut_doc_new(NULL));
Parser<T, Processors<Ps...>>::write(w, _obj, typename ParentType::Root{});
yyjson_write_err err;
const char* json_c_str =
yyjson_mut_write_opts(w.doc_, _flag, NULL, NULL, &err);
if (!json_c_str) {
throw std::runtime_error("An error occured while writing to JSON: " +
std::string(err.msg));
}
_stream << json_c_str;
free((void*)json_c_str);
yyjson_mut_doc_free(w.doc_);
return _stream;
}
} // namespace json
} // namespace rfl
#endif
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