1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2021 Tobias Kortkamp <tobik@FreeBSD.org> 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 #pragma once 29 30 __noreturn void libias_panic(const char *, uint32_t, const char *, ...) __printflike(3, 4); 31 #define panic(...) libias_panic(__FILE__, __LINE__, __VA_ARGS__) 32 #define panic_if(x, ...) if (x) { panic(__VA_ARGS__); } 33 #define panic_unless(x, ...) unless (x) { panic(__VA_ARGS__); } 34 35 #define unless(x) if (!(x)) 36 37 #define CONCAT(a, b) __CONCAT_1(a, b) 38 #define __CONCAT_1(a, b) a##b 39 40 #define GENSYM(name) \ 41 CONCAT(__gensym_##name##_, __COUNTER__) 42 43 #define DECLARE_COMPARE(name) \ 44 int name(const void *, const void *, void *); 45 #define DEFINE_COMPARE(name, type, thistype) __DEFINE_COMPARE(name, type, thistype, GENSYM(name)) 46 #define __DEFINE_COMPARE(name, type, thistype, sym) \ 47 static inline int sym(type *, type *, thistype *); \ 48 int name(const void *ap, const void *bp, void *userdata) { \ 49 return sym(*(type**)ap, *(type**)bp, userdata); \ 50 } \ 51 inline int sym(type *a, type *b, thistype *this) 52 53 #define ITERATOR_FOREACH(...) __ITERATOR_FOREACH(GENSYM(iter_var), GENSYM(iter_state), __VA_ARGS__) 54 #define __ITERATOR_FOREACH(ITERVAR, ITERSTATEVAR, ITERTYPE, ITERPREFIX, COLL, A, B, KEYTYPE, KEYCAST, KEYVAR, KEYINIT, VALTYPE, VALCAST, VALVAR, VALINIT) \ 55 for (struct ITERTYPE##Iterator *ITERVAR __cleanup(ITERPREFIX##_iterator_cleanup) = ITERPREFIX##_iterator((COLL), A, B); ITERVAR != NULL; ITERPREFIX##_iterator_cleanup(&ITERVAR)) \ 56 for (size_t KEYVAR##_index = 0; ITERVAR != NULL; ITERPREFIX##_iterator_cleanup(&ITERVAR)) \ 57 for (KEYTYPE KEYVAR = KEYINIT; ITERVAR != NULL; ITERPREFIX##_iterator_cleanup(&ITERVAR)) \ 58 for (VALTYPE VALVAR = VALINIT; ITERVAR != NULL; ITERPREFIX##_iterator_cleanup(&ITERVAR)) \ 59 for (int ITERSTATEVAR = ITERPREFIX##_iterator_next(&ITERVAR, &KEYVAR##_index, (KEYCAST)&KEYVAR, (VALCAST)&VALVAR); ITERSTATEVAR; ITERSTATEVAR = ITERPREFIX##_iterator_next(&ITERVAR, &KEYVAR##_index, (KEYCAST)&KEYVAR, (VALCAST)&VALVAR)) 60