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construct/include/ircd/conf.h
2017-08-23 15:12:16 -06:00

93 lines
2 KiB
C++

/*
* Copyright (C) 2016 Charybdis Development Team
* Copyright (C) 2016 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#define HAVE_IRCD_CONF_H
namespace ircd {
extern struct conf conf;
} // namespace ircd
struct ircd::conf
{
struct init;
struct item_base;
template<class T> struct item;
std::map<std::string, item_base> items;
};
struct ircd::conf::item_base
{
std::string buf;
};
template<class T>
struct ircd::conf::item
:item_base
{
operator const T &() const
{
assert(buf.size() == sizeof(T));
return reinterpret_cast<T *>(buf.data());
};
operator T &()
{
assert(buf.size() == sizeof(T));
return reinterpret_cast<T *>(buf.data());
};
item(T t)
:item_base{[&t]
{
std::string ret{sizeof(T), char{}};
*reinterpret_cast<T *>(ret.data()) = std::move(t);
}()}
{}
};
namespace ircd {
template<> struct conf::item<std::string>;
}
template<>
struct ircd::conf::item<std::string>
:item_base
{
operator const std::string &() const
{
return buf;
};
operator std::string &()
{
return buf;
};
item(std::string string)
:item_base{std::move(string)}
{}
};