136 lines
4.6 KiB
C
136 lines
4.6 KiB
C
/* Copyright (c) 2011,2012 Simon Schubert <2@0x2c.org>.
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* Modifications by Jacob Alexander 2014-2015 <haata@kiibohd.com>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#pragma once
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// ----- Compiler Includes -----
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#include <sys/param.h>
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// ----- Defines & Macros -----
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#define _CONCAT(x,y) _CONCAT1(x,y)
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#define _CONCAT1(x,y) x ## y
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#define _STR(a) #a
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typedef __CHAR16_TYPE__ char16_t;
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#define __packed __attribute__((__packed__))
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/* From FreeBSD: compile-time asserts */
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#define CTASSERT(x) _Static_assert(x, _STR(x))
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#define CTASSERT_SIZE_BYTE(t, s) CTASSERT(sizeof(t) == (s))
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#define CTASSERT_SIZE_BIT(t, s) CTASSERT(sizeof(t) * 8 == (s))
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#define UNION_STRUCT_START(size) \
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union { \
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_CONCAT(_CONCAT(uint, size), _t) raw; \
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struct { \
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/* just to swallow the following semicolon */ \
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struct _CONCAT(_CONCAT(__dummy_, __COUNTER__), _t) {}
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#define UNION_STRUCT_END \
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}; /* struct */ \
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}; /* union */
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/**
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* From <news:dqgm2f$ije$1@sunnews.cern.ch>,
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* <https://groups.google.com/forum/#!topic/comp.std.c/d-6Mj5Lko_s>
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*/
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#define __PP_NARG(...) \
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__PP_NARG_(__0, ## __VA_ARGS__, __PP_RSEQ_N())
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#define __PP_NARG_(...) \
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__PP_ARG_N(__VA_ARGS__)
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#define __PP_ARG_N( \
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_1, _2, _3, _4, _5, _6, _7, _8, _9,_10, \
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_11,_12,_13,_14,_15,_16,_17,_18,_19,_20, \
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_21,_22,_23,_24,_25,_26,_27,_28,_29,_30, \
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_31,_32,_33,_34,_35,_36,_37,_38,_39,_40, \
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_41,_42,_43,_44,_45,_46,_47,_48,_49,_50, \
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_51,_52,_53,_54,_55,_56,_57,_58,_59,_60, \
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_61,_62,_63,N,...) N
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#define __PP_RSEQ_N() \
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62,61,60, \
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59,58,57,56,55,54,53,52,51,50, \
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49,48,47,46,45,44,43,42,41,40, \
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39,38,37,36,35,34,33,32,31,30, \
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29,28,27,26,25,24,23,22,21,20, \
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19,18,17,16,15,14,13,12,11,10, \
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9,8,7,6,5,4,3,2,1,0
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/**
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* From <https://github.com/pfultz2/Cloak/wiki/C-Preprocessor-tricks,-tips,-and-idioms>
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*/
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#define __CAT(a, ...) __PRIMITIVE_CAT(a, __VA_ARGS__)
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#define __PRIMITIVE_CAT(a, ...) a ## __VA_ARGS__
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#define __IIF(c) __PRIMITIVE_CAT(__IIF_, c)
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#define __IIF_0(t, ...) __VA_ARGS__
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#define __IIF_1(t, ...) t
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#define __COMPL(b) __PRIMITIVE_CAT(__COMPL_, b)
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#define __COMPL_0 1
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#define __COMPL_1 0
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#define __CHECK_N(x, n, ...) n
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#define __CHECK(...) __CHECK_N(__VA_ARGS__, 0,)
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#define __PROBE(x) x, 1,
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#define __NOT(x) __CHECK(__PRIMITIVE_CAT(__NOT_, x))
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#define __NOT_0 __PROBE(~)
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#define __BOOL(x) __COMPL(__NOT(x))
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#define __IF(c) __IIF(__BOOL(c))
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#define __EAT(...)
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#define __EXPAND(...) __VA_ARGS__
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#define __WHEN(c) __IF(c)(__EXPAND, __EAT)
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#define __HEAD(h, ...) h
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#define __TAIL(h, ...) __VA_ARGS__
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#define __EVAL(...) __EVAL1(__EVAL1(__EVAL1(__VA_ARGS__)))
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#define __EVAL1(...) __EVAL2(__EVAL2(__EVAL2(__VA_ARGS__)))
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#define __EVAL2(...) __EVAL3(__EVAL3(__EVAL3(__VA_ARGS__)))
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#define __EVAL3(...) __EVAL4(__EVAL4(__EVAL4(__VA_ARGS__)))
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#define __EVAL4(...) __EVAL5(__EVAL5(__EVAL5(__VA_ARGS__)))
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#define __EVAL5(...) __EVAL6(__EVAL6(__EVAL6(__VA_ARGS__)))
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#define __EVAL6(...) __VA_ARGS__
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#define __EMPTY()
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#define __DEFER(id) id __EMPTY()
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#define __OBSTRUCT(...) __VA_ARGS__ __DEFER(__EMPTY)()
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#define __CAT_ARG(f, a) __OBSTRUCT(f) a
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#define __REPEAT(...) __EVAL(__REPEAT_(__VA_ARGS__))
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#define __REPEAT_INNER(...) __OBSTRUCT(__REPEAT_INDIRECT) () (__VA_ARGS__)
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#define __REPEAT_INDIRECT() __REPEAT_
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#define __REPEAT_(iter, itermacro, macro, a, ...) \
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__OBSTRUCT(macro)(iter, a) \
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__WHEN(__PP_NARG(__VA_ARGS__)) \
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( \
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__OBSTRUCT(__REPEAT_INDIRECT) () ( \
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itermacro(iter, a), itermacro, macro, __VA_ARGS__ \
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) \
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)
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