mirror of
https://github.com/matrix-construct/construct
synced 2024-10-31 02:48:58 +01:00
126 lines
3.3 KiB
C++
126 lines
3.3 KiB
C++
/*
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* charybdis: 21st Century IRC++d
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* util.h: Miscellaneous utilities
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*
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* Copyright (C) 2016 Charybdis Development Team
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* Copyright (C) 2016 Jason Volk <jason@zemos.net>
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice is present in all copies.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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#pragma once
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#define HAVE_IRCD_UTIL_H
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#ifdef __cplusplus
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namespace ircd {
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inline namespace util {
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#define IRCD_EXPCAT(a, b) a ## b
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#define IRCD_CONCAT(a, b) IRCD_EXPCAT(a, b)
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#define IRCD_UNIQUE(a) IRCD_CONCAT(a, __COUNTER__)
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#define IRCD_OVERLOAD(NAME) \
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struct NAME##_t {}; \
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static constexpr NAME##_t NAME {};
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#define IRCD_STRONG_TYPEDEF(TYPE, NAME) \
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struct NAME \
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{ \
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TYPE val; \
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\
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operator const TYPE &() const { return val; } \
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operator TYPE &() { return val; } \
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};
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// ex: using foo_t = IRCD_STRONG_T(int)
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#define IRCD_STRONG_T(TYPE) \
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IRCD_STRONG_TYPEDEF(TYPE, IRCD_UNIQUE(strong_t))
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template<class T>
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using custom_ptr = std::unique_ptr<T, std::function<void (T *)>>;
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struct scope
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{
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const std::function<void ()> func;
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template<class F>
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scope(F &&func)
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:func(std::forward<F>(func))
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{
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}
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~scope()
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{
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func();
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}
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};
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// For conforming enums include a _NUM_ as the last element,
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// then num_of<my_enum>() works
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template<class Enum>
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constexpr
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typename std::underlying_type<Enum>::type
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num_of()
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{
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return static_cast<typename std::underlying_type<Enum>::type>(Enum::_NUM_);
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}
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struct case_insensitive_less
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:std::binary_function<std::string, std::string, bool>
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{
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bool operator() (const std::string &lhs, const std::string &rhs) const
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{
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return rb_strcasecmp(lhs.c_str(), rhs.c_str()) < 0;
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}
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};
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#ifdef HAVE_IRCD_MATCH_H
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struct case_mapped_less
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:std::binary_function<std::string, std::string, bool>
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{
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bool operator() (const std::string &lhs, const std::string &rhs) const
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{
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return irccmp(lhs.c_str(), rhs.c_str()) < 0;
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}
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};
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#endif
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#ifdef BOOST_LEXICAL_CAST_INCLUDED
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template<class T = std::string,
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class... Args>
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auto lex_cast(Args&&... args)
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{
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return boost::lexical_cast<T>(std::forward<Args>(args)...);
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}
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#endif
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} // namespace util
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} // namespace ircd
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#endif // __cplusplus
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