/* * Copyright © 2008-2011 Kristian Høgsberg * Copyright © 2011 Intel Corporation * Copyright © 2013-2015 Red Hat, Inc. * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice (including the next * paragraph) shall be included in all copies or substantial portions of the * Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER * DEALINGS IN THE SOFTWARE. */ #pragma once #include "config.h" #ifndef HAVE_C23_AUTO #define auto __auto_type #endif #define ARRAY_LENGTH(a) (sizeof (a) / sizeof (a)[0]) /** * Iterate through the array _arr, assigning the variable elem to each * element. elem only exists within the loop. */ #define ARRAY_FOR_EACH(_arr, _elem) \ for (__typeof__((_arr)[0]) *_elem = _arr; \ _elem < (_arr) + ARRAY_LENGTH(_arr); \ _elem++) #define min(a, b) (((a) < (b)) ? (a) : (b)) #define max(a, b) (((a) > (b)) ? (a) : (b)) #define clamp(v, lo, hi) min((hi), max((lo), (v))) #define ANSI_BOLD "\x1B[0;1m" #define ANSI_RED "\x1B[0;31m" #define ANSI_GREEN "\x1B[0;32m" #define ANSI_YELLOW "\x1B[0;33m" #define ANSI_BLUE "\x1B[0;34m" #define ANSI_MAGENTA "\x1B[0;35m" #define ANSI_CYAN "\x1B[0;36m" #define ANSI_WHITE "\x1B[0;37m" #define ANSI_BRIGHT_RED "\x1B[0;91m" #define ANSI_BRIGHT_GREEN "\x1B[0;92m" #define ANSI_BRIGHT_YELLOW "\x1B[0;93m" #define ANSI_BRIGHT_BLUE "\x1B[0;94m" #define ANSI_BRIGHT_MAGENTA "\x1B[0;95m" #define ANSI_BRIGHT_CYAN "\x1B[0;96m" #define ANSI_BRIGHT_WHITE "\x1B[0;97m" #define ANSI_BOLD_RED "\x1B[0;1;31m" #define ANSI_BOLD_GREEN "\x1B[0;1;32m" #define ANSI_BOLD_YELLOW "\x1B[0;1;33m" #define ANSI_BOLD_BLUE "\x1B[0;1;34m" #define ANSI_BOLD_MAGENTA "\x1B[0;1;35m" #define ANSI_BOLD_CYAN "\x1B[0;1;36m" #define ANSI_BOLD_WHITE "\x1B[0;1;37m" #define ANSI_BOLD_BRIGHT_RED "\x1B[0;1;91m" #define ANSI_BOLD_BRIGHT_GREEN "\x1B[0;1;92m" #define ANSI_BOLD_BRIGHT_YELLOW "\x1B[0;1;93m" #define ANSI_BOLD_BRIGHT_BLUE "\x1B[0;1;94m" #define ANSI_BOLD_BRIGHT_MAGENTA "\x1B[0;1;95m" #define ANSI_BOLD_BRIGHT_CYAN "\x1B[0;1;96m" #define ANSI_BOLD_BRIGHT_WHITE "\x1B[0;1;97m" #define ANSI_NORMAL "\x1B[0m" #define ANSI_BG_RED "\x1B[0;41m" #define ANSI_BG_GREEN "\x1B[0;42m" #define ANSI_BG_YELLOW "\x1B[0;43m" #define ANSI_BG_BLUE "\x1B[0;44m" #define ANSI_BG_MAGENTA "\x1B[0;45m" #define ANSI_BG_CYAN "\x1B[0;46m" #define ANSI_BG_WHITE "\x1B[0;47m" #define ANSI_BG_BRIGHT_RED "\x1B[0;101m" #define ANSI_BG_BRIGHT_GREEN "\x1B[0;102m" #define ANSI_BG_BRIGHT_YELLOW "\x1B[0;103m" #define ANSI_BG_BRIGHT_BLUE "\x1B[0;104m" #define ANSI_BG_BRIGHT_MAGENTA "\x1B[0;105m" #define ANSI_BG_BRIGHT_CYAN "\x1B[0;106m" #define ANSI_BG_BRIGHT_WHITE "\x1B[0;107m" #define ANSI_UP "\x1B[%dA" #define ANSI_DOWN "\x1B[%dB" #define ANSI_RIGHT "\x1B[%dC" #define ANSI_LEFT "\x1B[%dD" #define ANSI_RGB(r, g, b) "\x1B[38;2;" #r ";" #g ";" #b "m" #define ANSI_RGB_BG(r, g, b) "\x1B[48;2;" #r ";" #g ";" #b "m" #define ANSI_CLEAR_LINE "\x1B[2K" #define ANSI_CLEAR_EOL "\x1B[0K" #define CASE_RETURN_STRING(a) case a: return #a /** * Concatenate two macro args into one, e.g.: * int CONCAT(foo_, __LINE__); * will produce: * int foo_123; */ #define CONCAT2(X, Y) X##Y #define CONCAT(X, Y) CONCAT2(X,Y) #define _unused_ __attribute__((unused)) #define _fallthrough_ __attribute__((fallthrough)) #define _nonnull_(...) __attribute__((nonnull(__VA_ARGS__))) /* Returns the number of macro arguments, this expands * _VARIABLE_MACRO_NARGS(a, b, c) to NTH_ARG(a, b, c, 15, 14, 13, .... 4, 3, 2, 1). * _VARIABLE_MACRO_NTH_ARG always returns the 16th argument which in our case is 3. * * If we want more than 16 values _VARIABLE_MACRO_COUNTDOWN and * _VARIABLE_MACRO_NTH_ARG both need to be updated. */ #define _VARIABLE_MACRO_NARGS(...) _VARIABLE_MACRO_NARGS1(__VA_ARGS__, _VARIABLE_MACRO_COUNTDOWN) #define _VARIABLE_MACRO_NARGS1(...) _VARIABLE_MACRO_NTH_ARG(__VA_ARGS__) /* Add to this if we need more than 16 args */ #define _VARIABLE_MACRO_COUNTDOWN \ 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0 /* Return the 16th argument passed in. See _VARIABLE_MACRO_NARGS above for usage. * Note this is 1-indexed. */ #define _VARIABLE_MACRO_NTH_ARG(_1, \ _2, \ _3, \ _4, \ _5, \ _6, \ _7, \ _8, \ _9, \ _10, \ _11, \ _12, \ _13, \ _14, \ _15, \ N, \ ...) N /* Defines a different expansion of macros depending on the * number of arguments, e.g. it turns * VARIABLE_MACRO(_ARG, a, b, c) into _ARG3(a, b, c) * * This can be used to have custom macros that expand to different things * depending on the number of arguments. This example converts a * single macro argument into value + stringify, two arguments into * first and second argument. * * #define _ARG1(_1) _1, #_1, * #define _ARG2(_1, _2) _1, _2, * * #define MYMACRO(...) _VARIABLE_MACRO(_ARG, __VA_ARGS__) * * static void foo(int value, char *name) { printf("%d: %s\n", value, name); } * * int main(void) { * foo(MYMACRO(0)); // prints "0: 0" * foo(MYMACRO(0, "zero")); // prints "0: zero" * return 0; * } * * The first argument to VARIABLE_MACRO defines the prefix of the * expander macros (here _ARG -> _ARG0, _ARG1, ...). These need to be defined * in the caller for the number of arguments accepted * (up to _VARIABLE_MACRO_COUNTDOWN args). */ #define _VARIABLE_MACRO(func, ...) CONCAT(func, _VARIABLE_MACRO_NARGS(__VA_ARGS__)) (__VA_ARGS__)