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construct/include/ircd/json/tuple/property.h
2019-03-06 15:02:43 -08:00

77 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_PROPERTY_H
namespace ircd::json
{
template<const char *const &name,
class value_type>
struct property;
}
/// The property template specifies a key/value member of a json::tuple
///
///
template<const char *const &name,
class T>
struct ircd::json::property
{
using key_type = const char *const &;
using value_type = T;
static constexpr auto &key
{
name
};
T value;
constexpr operator const T &() const;
constexpr operator T &();
property() = default;
constexpr property(T&& value);
constexpr property &operator=(T&& value);
};
template<const char *const &name,
class T>
constexpr
ircd::json::property<name, T>::property(T&& value)
:value{std::forward<T>(value)}
{}
template<const char *const &name,
class T>
constexpr ircd::json::property<name, T> &
ircd::json::property<name, T>::operator=(T&& value)
{
this->value = std::forward<T>(value);
return *this;
}
template<const char *const &name,
class T>
constexpr ircd::json::property<name, T>::operator
T &()
{
return value;
}
template<const char *const &name,
class T>
constexpr ircd::json::property<name, T>::operator
const T &()
const
{
return value;
}