json.hpp

//
// Copyright (c) 2022 Klemens Morgenstern (klemens.morgenstern@gmx.net)
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
 
#ifndef BOOST_SQLITE_JSON_HPP
#define BOOST_SQLITE_JSON_HPP
 
#include <boost/sqlite/detail/config.hpp>
#include <boost/sqlite/field.hpp>
#include <boost/sqlite/value.hpp>
#include <boost/json/fwd.hpp>
#include <boost/json/storage_ptr.hpp>
 
BOOST_SQLITE_BEGIN_NAMESPACE
 
struct resultset;
struct field;
struct value;
 
constexpr int json_subtype = static_cast<int>('J');
 
BOOST_SQLITE_DECL void tag_invoke(const struct set_result_tag &, sqlite3_context * ctx, const json::value & value);
 
inline bool is_json(const value & v) { return v.type() == value_type::text && v.subtype() == json_subtype; }
inline bool is_json(const field & f) { return f.type() == value_type::text && f.get_value().subtype() == json_subtype; }
 
BOOST_SQLITE_DECL json::value as_json(const value & v, json::storage_ptr ptr = {});
BOOST_SQLITE_DECL json::value as_json(const field & f, json::storage_ptr ptr = {});
 
BOOST_SQLITE_DECL void tag_invoke( const json::value_from_tag &, json::value& val, const value & f);
BOOST_SQLITE_DECL void tag_invoke( const json::value_from_tag &, json::value& val, const field & f);
BOOST_SQLITE_DECL void tag_invoke( const json::value_from_tag &, json::value& val, resultset && rs);
 
BOOST_SQLITE_END_NAMESPACE
 
 
#endif //BOOST_SQLITE_JSON_HPP