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construct/include/ircd/supported.h
2016-08-25 03:01:45 -07:00

108 lines
3.5 KiB
C++

/*
* charybdis: A slightly useful ircd.
* supported.h: isupport (005) numeric
*
* Entirely rewritten, August 2006 by Jilles Tjoelker
* Copyright (C) 2006 Jilles Tjoelker
* Copyright (C) 2016 Charybdis Development Team
* Copyright (C) 2016 Jason Volk <jason@zemos.net>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* 1.Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2.Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3.The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* 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_SUPPORTED_H
#ifdef __cplusplus
namespace ircd {
namespace supported {
using client::client;
// Additional types can be supported here eventually
enum class type
{
BOOLEAN, // boolean value (always true if key exists in map)
INTEGER, // integer is copied here as the value
STRING, // string is copied here as the value
FUNC_BOOLEAN, // function returns a boolean value
FUNC_STREAM, // function argument is an output stream
};
struct value
{
enum type type; union
{
int64_t integer;
std::string string;
std::function<bool ()> func_boolean;
std::function<void (ostream &)> func_stream;
};
ostream &operator()(const std::string &key, ostream &buf) const;
value();
value(const int64_t &);
value(const std::string &);
value(const std::function<bool ()> &);
value(const std::function<void (ostream &)> &);
~value() noexcept;
};
extern std::map<std::string, value> map;
template<class value_t> void add(const std::string &key, value_t&& v);
void add(const std::string &key);
bool del(const std::string &key);
void show(client &);
void init();
} // namespace supported
} // namespace ircd
inline
void ircd::supported::add(const std::string &key)
{
//TODO: XXX
//value can't be reassigned unless there's an explicit move constructor
//elaborating the entire unrestricted union etc etc for another time.
map.erase(key);
map.emplace(std::piecewise_construct,
std::make_tuple(key),
std::make_tuple());
}
template<class value_t>
void ircd::supported::add(const std::string &key,
value_t&& v)
{
map.erase(key);
map.emplace(std::piecewise_construct,
std::make_tuple(key),
std::make_tuple(std::forward<value_t>(v)));
}
#endif // __cplusplus