126 lines
4.6 KiB
C++
126 lines
4.6 KiB
C++
/*************************************************************************/
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/* defs.hpp */
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/*************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* https://godotengine.org */
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/*************************************************************************/
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/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur. */
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/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md). */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/*************************************************************************/
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#ifndef DEFS_H
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#define DEFS_H
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#include <cstddef>
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#include <cstdint>
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#if !defined(GDN_EXPORT)
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#if defined(_WIN32)
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#define GDN_EXPORT __declspec(dllexport)
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#elif defined(__GNUC__)
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#define GDN_EXPORT __attribute__((visibility("default")))
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#else
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#define GDN_EXPORT
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#endif
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#endif
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// Turn argument to string constant:
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// https://gcc.gnu.org/onlinedocs/cpp/Stringizing.html#Stringizing
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#ifndef _STR
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#define _STR(m_x) #m_x
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#define _MKSTR(m_x) _STR(m_x)
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#endif
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// Should always inline no matter what.
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#ifndef _ALWAYS_INLINE_
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#if defined(__GNUC__)
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#define _ALWAYS_INLINE_ __attribute__((always_inline)) inline
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#elif defined(_MSC_VER)
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#define _ALWAYS_INLINE_ __forceinline
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#else
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#define _ALWAYS_INLINE_ inline
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#endif
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#endif
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// Should always inline, except in debug builds because it makes debugging harder.
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#ifndef _FORCE_INLINE_
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#ifdef DISABLE_FORCED_INLINE
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#define _FORCE_INLINE_ inline
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#else
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#define _FORCE_INLINE_ _ALWAYS_INLINE_
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#endif
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#endif
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// Windows badly defines a lot of stuff we'll never use. Undefine it.
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#ifdef _WIN32
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#undef min // override standard definition
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#undef max // override standard definition
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#undef ERROR // override (really stupid) wingdi.h standard definition
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#undef DELETE // override (another really stupid) winnt.h standard definition
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#undef MessageBox // override winuser.h standard definition
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#undef MIN // override standard definition
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#undef MAX // override standard definition
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#undef CLAMP // override standard definition
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#undef Error
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#undef OK
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#undef CONNECT_DEFERRED // override from Windows SDK, clashes with Object enum
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#endif
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#if defined(__GNUC__)
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#define likely(x) __builtin_expect(!!(x), 1)
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#define unlikely(x) __builtin_expect(!!(x), 0)
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#else
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#define likely(x) x
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#define unlikely(x) x
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#endif
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#ifdef REAL_T_IS_DOUBLE
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typedef double real_t;
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#else
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typedef float real_t;
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#endif
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// Generic swap template.
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#ifndef SWAP
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#define SWAP(m_x, m_y) __swap_tmpl((m_x), (m_y))
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template <class T>
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inline void __swap_tmpl(T &x, T &y) {
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T aux = x;
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x = y;
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y = aux;
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}
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#endif // SWAP
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// Home-made index sequence trick, so it can be used everywhere without the costly include of std::tuple.
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// https://stackoverflow.com/questions/15014096/c-index-of-type-during-variadic-template-expansion
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template <size_t... Is>
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struct IndexSequence {};
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template <size_t N, size_t... Is>
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struct BuildIndexSequence : BuildIndexSequence<N - 1, N - 1, Is...> {};
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template <size_t... Is>
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struct BuildIndexSequence<0, Is...> : IndexSequence<Is...> {};
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#endif // ! DEFS_H
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