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construct/include/ircd/json/strung.h
2020-08-05 02:18:56 -07:00

67 lines
1.6 KiB
C++

// Matrix Construct
//
// Copyright (C) Matrix Construct Developers, Authors & Contributors
// Copyright (C) 2016-2018 Jason Volk <jason@zemos.net>
//
// Permission to use, copy, modify, and/or distribute this software for any
// purpose with or without fee is hereby granted, provided that the above
// copyright notice and this permission notice is present in all copies. The
// full license for this software is available in the LICENSE file.
#pragma once
#define HAVE_IRCD_JSON_STRUNG_H
namespace ircd::json
{
struct strung;
}
/// Interface around an allocated std::string of JSON. This is not a
/// json::string type; it is a full JSON which will stringify the
/// constructor arguments into the std::string's buffer as a convenience
/// to reduce boilerplate when the user has no interest in buffering the
/// stringify() calls another way.
///
struct ircd::json::strung
:std::string
{
explicit operator json::object() const;
explicit operator json::array() const;
strung() = default;
template<class... T> strung(T&&... t);
strung(strung &&s) noexcept;
strung(const strung &s);
strung &operator=(strung &&) = default;
strung &operator=(const strung &) = default;
};
inline
ircd::json::strung::strung(strung &&s)
noexcept
:std::string{std::move(s)}
{}
inline
ircd::json::strung::strung(const strung &s)
:std::string{s}
{}
template<class... T>
inline
ircd::json::strung::strung(T&&... t)
:std::string
{
util::string(serialized(std::forward<T>(t)...), [&t...]
(const mutable_buffer &out)
{
const auto sv
{
stringify(mutable_buffer{out}, std::forward<T>(t)...)
};
debug_valid_output(sv, ircd::size(out));
return sv;
})
}
{}