mirror of
https://gitlab.freedesktop.org/libinput/libinput.git
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a102269364
Might as well get a bit of compiler help here. Part-of: <https://gitlab.freedesktop.org/libinput/libinput/-/merge_requests/1292>
182 lines
7 KiB
C
182 lines
7 KiB
C
/*
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* Copyright © 2008-2011 Kristian Høgsberg
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* Copyright © 2011 Intel Corporation
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* Copyright © 2013-2015 Red Hat, Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*/
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#pragma once
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#include "config.h"
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#ifndef HAVE_C23_AUTO
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#define auto __auto_type
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#endif
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#define ARRAY_LENGTH(a) (sizeof (a) / sizeof (a)[0])
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/**
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* Iterate through the array _arr, assigning the variable elem to each
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* element. elem only exists within the loop.
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*/
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#define ARRAY_FOR_EACH(_arr, _elem) \
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for (__typeof__((_arr)[0]) *_elem = _arr; \
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_elem < (_arr) + ARRAY_LENGTH(_arr); \
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_elem++)
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#define min(a, b) (((a) < (b)) ? (a) : (b))
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#define max(a, b) (((a) > (b)) ? (a) : (b))
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#define clamp(v, lo, hi) min((hi), max((lo), (v)))
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#define ANSI_BOLD "\x1B[0;1m"
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#define ANSI_RED "\x1B[0;31m"
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#define ANSI_GREEN "\x1B[0;32m"
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#define ANSI_YELLOW "\x1B[0;33m"
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#define ANSI_BLUE "\x1B[0;34m"
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#define ANSI_MAGENTA "\x1B[0;35m"
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#define ANSI_CYAN "\x1B[0;36m"
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#define ANSI_WHITE "\x1B[0;37m"
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#define ANSI_BRIGHT_RED "\x1B[0;91m"
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#define ANSI_BRIGHT_GREEN "\x1B[0;92m"
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#define ANSI_BRIGHT_YELLOW "\x1B[0;93m"
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#define ANSI_BRIGHT_BLUE "\x1B[0;94m"
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#define ANSI_BRIGHT_MAGENTA "\x1B[0;95m"
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#define ANSI_BRIGHT_CYAN "\x1B[0;96m"
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#define ANSI_BRIGHT_WHITE "\x1B[0;97m"
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#define ANSI_BOLD_RED "\x1B[0;1;31m"
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#define ANSI_BOLD_GREEN "\x1B[0;1;32m"
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#define ANSI_BOLD_YELLOW "\x1B[0;1;33m"
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#define ANSI_BOLD_BLUE "\x1B[0;1;34m"
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#define ANSI_BOLD_MAGENTA "\x1B[0;1;35m"
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#define ANSI_BOLD_CYAN "\x1B[0;1;36m"
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#define ANSI_BOLD_WHITE "\x1B[0;1;37m"
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#define ANSI_BOLD_BRIGHT_RED "\x1B[0;1;91m"
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#define ANSI_BOLD_BRIGHT_GREEN "\x1B[0;1;92m"
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#define ANSI_BOLD_BRIGHT_YELLOW "\x1B[0;1;93m"
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#define ANSI_BOLD_BRIGHT_BLUE "\x1B[0;1;94m"
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#define ANSI_BOLD_BRIGHT_MAGENTA "\x1B[0;1;95m"
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#define ANSI_BOLD_BRIGHT_CYAN "\x1B[0;1;96m"
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#define ANSI_BOLD_BRIGHT_WHITE "\x1B[0;1;97m"
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#define ANSI_NORMAL "\x1B[0m"
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#define ANSI_BG_RED "\x1B[0;41m"
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#define ANSI_BG_GREEN "\x1B[0;42m"
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#define ANSI_BG_YELLOW "\x1B[0;43m"
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#define ANSI_BG_BLUE "\x1B[0;44m"
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#define ANSI_BG_MAGENTA "\x1B[0;45m"
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#define ANSI_BG_CYAN "\x1B[0;46m"
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#define ANSI_BG_WHITE "\x1B[0;47m"
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#define ANSI_BG_BRIGHT_RED "\x1B[0;101m"
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#define ANSI_BG_BRIGHT_GREEN "\x1B[0;102m"
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#define ANSI_BG_BRIGHT_YELLOW "\x1B[0;103m"
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#define ANSI_BG_BRIGHT_BLUE "\x1B[0;104m"
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#define ANSI_BG_BRIGHT_MAGENTA "\x1B[0;105m"
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#define ANSI_BG_BRIGHT_CYAN "\x1B[0;106m"
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#define ANSI_BG_BRIGHT_WHITE "\x1B[0;107m"
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#define ANSI_UP "\x1B[%dA"
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#define ANSI_DOWN "\x1B[%dB"
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#define ANSI_RIGHT "\x1B[%dC"
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#define ANSI_LEFT "\x1B[%dD"
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#define ANSI_RGB(r, g, b) "\x1B[38;2;" #r ";" #g ";" #b "m"
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#define ANSI_RGB_BG(r, g, b) "\x1B[48;2;" #r ";" #g ";" #b "m"
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#define ANSI_CLEAR_LINE "\x1B[2K"
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#define ANSI_CLEAR_EOL "\x1B[0K"
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#define CASE_RETURN_STRING(a) case a: return #a
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/**
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* Concatenate two macro args into one, e.g.:
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* int CONCAT(foo_, __LINE__);
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* will produce:
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* int foo_123;
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*/
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#define CONCAT2(X, Y) X##Y
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#define CONCAT(X, Y) CONCAT2(X,Y)
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#define _unused_ __attribute__((unused))
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#define _fallthrough_ __attribute__((fallthrough))
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#define _nonnull_(...) __attribute__((nonnull(__VA_ARGS__)))
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/* Returns the number of macro arguments, this expands
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* _VARIABLE_MACRO_NARGS(a, b, c) to NTH_ARG(a, b, c, 15, 14, 13, .... 4, 3, 2, 1).
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* _VARIABLE_MACRO_NTH_ARG always returns the 16th argument which in our case is 3.
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*
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* If we want more than 16 values _VARIABLE_MACRO_COUNTDOWN and
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* _VARIABLE_MACRO_NTH_ARG both need to be updated.
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*/
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#define _VARIABLE_MACRO_NARGS(...) _VARIABLE_MACRO_NARGS1(__VA_ARGS__, _VARIABLE_MACRO_COUNTDOWN)
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#define _VARIABLE_MACRO_NARGS1(...) _VARIABLE_MACRO_NTH_ARG(__VA_ARGS__)
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/* Add to this if we need more than 16 args */
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#define _VARIABLE_MACRO_COUNTDOWN \
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15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0
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/* Return the 16th argument passed in. See _VARIABLE_MACRO_NARGS above for usage.
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* Note this is 1-indexed.
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*/
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#define _VARIABLE_MACRO_NTH_ARG(_1, \
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_2, \
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_3, \
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_4, \
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_5, \
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_6, \
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_7, \
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_8, \
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_9, \
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_10, \
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_11, \
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_12, \
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_13, \
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_14, \
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_15, \
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N, \
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...) N
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/* Defines a different expansion of macros depending on the
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* number of arguments, e.g. it turns
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* VARIABLE_MACRO(_ARG, a, b, c) into _ARG3(a, b, c)
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*
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* This can be used to have custom macros that expand to different things
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* depending on the number of arguments. This example converts a
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* single macro argument into value + stringify, two arguments into
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* first and second argument.
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*
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* #define _ARG1(_1) _1, #_1,
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* #define _ARG2(_1, _2) _1, _2,
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*
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* #define MYMACRO(...) _VARIABLE_MACRO(_ARG, __VA_ARGS__)
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*
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* static void foo(int value, char *name) { printf("%d: %s\n", value, name); }
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*
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* int main(void) {
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* foo(MYMACRO(0)); // prints "0: 0"
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* foo(MYMACRO(0, "zero")); // prints "0: zero"
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* return 0;
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* }
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*
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* The first argument to VARIABLE_MACRO defines the prefix of the
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* expander macros (here _ARG -> _ARG0, _ARG1, ...). These need to be defined
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* in the caller for the number of arguments accepted
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* (up to _VARIABLE_MACRO_COUNTDOWN args).
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*/
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#define _VARIABLE_MACRO(func, ...) CONCAT(func, _VARIABLE_MACRO_NARGS(__VA_ARGS__)) (__VA_ARGS__)
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