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construct/include/ircd/m/error.h
2017-09-08 03:47:50 -07:00

124 lines
4.1 KiB
C++

/*
* charybdis: 21st Century IRC++d
*
* 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_M_ERROR_H
namespace ircd::m
{
struct error;
}
struct ircd::m::error
:http::error
{
template<class... args> error(const http::code &, const string_view &errcode, const char *const &fmt, args&&...);
template<class... args> error(const string_view &errcode, const char *const &fmt, args&&...);
error(const http::code &, const json::object &object = {});
error(const http::code &, const json::index &idx);
error(const http::code &);
error(std::string = {});
IRCD_OVERLOAD(child)
template<class... args> error(child_t, args&&... a)
:error{std::forward<args>(a)...}
{}
};
#define IRCD_M_EXCEPTION(_parent_, _name_, _httpcode_) \
struct _name_ \
: _parent_ \
{ \
template<class... args> _name_(args&&... a) \
: _parent_ \
{ \
child, _httpcode_, "M_"#_name_, std::forward<args>(a)... \
}{} \
\
template<class... args> _name_(child_t, args&&... a) \
: _parent_ \
{ \
child, std::forward<args>(a)... \
}{} \
};
namespace ircd::m
{
IRCD_M_EXCEPTION(error, UNKNOWN, http::INTERNAL_SERVER_ERROR);
IRCD_M_EXCEPTION(error, NOT_FOUND, http::NOT_FOUND);
IRCD_M_EXCEPTION(error, BAD_JSON, http::BAD_REQUEST);
}
inline
ircd::m::error::error(std::string c)
:http::error{http::INTERNAL_SERVER_ERROR, std::move(c)}
{}
inline
ircd::m::error::error(const http::code &c)
:http::error{c}
{}
inline
ircd::m::error::error(const http::code &c,
const json::index &index)
:http::error{c, std::string{index}}
{}
inline
ircd::m::error::error(const http::code &c,
const json::object &object)
:http::error{c, std::string{object}}
{}
template<class... args>
ircd::m::error::error(const string_view &errcode,
const char *const &fmt,
args&&... a)
:error
{
http::BAD_REQUEST, errcode, fmt, std::forward<args>(a)...
}{}
template<class... args>
ircd::m::error::error(const http::code &status,
const string_view &errcode,
const char *const &fmt,
args&&... a)
:http::error
{
status, [&]() -> std::string
{
char estr[256]; const auto estr_len
{
fmt::snprintf{estr, sizeof(estr), fmt, std::forward<args>(a)...}
};
return json::index
{
{ "errcode", errcode },
{ "error", string_view(estr, estr_len) }
};
}()
}{}