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construct/include/ircd/json/tuple/property.h

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// 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;
operator const T &() const;
operator T &();
property(T&& value)
:value{value}
{}
property() = default;
};
template<const char *const &name,
class T>
ircd::json::property<name, T>::operator
T &()
{
return value;
}
template<const char *const &name,
class T>
ircd::json::property<name, T>::operator
const T &()
const
{
return value;
}