b0498564b2
These overloaded macros allow passing either a const or a non-const endp, and will call the appropriate function. This kind of const overloading has prior art in C23's string functions, such as memchr(3). Martin suggested using an artificial function pointer in _Generic(3); it allows switching on various types at the same time. Also add a comment referring to liba2i's PDF manual for documentation. Link: <https://www.open-std.org/jtc1/sc22/wg14/www/docs/n3096.pdf#subsubsection.7.26.5.2> Link: <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114731> Link: <http://www.alejandro-colomar.es/share/dist/liba2i/git/HEAD/liba2i-HEAD.pdf> Co-developed-by: Martin Uecker <muecker@gwdg.de> Signed-off-by: Alejandro Colomar <alx@kernel.org>
387 lines
14 KiB
C
387 lines
14 KiB
C
// SPDX-FileCopyrightText: 2023-2024, Alejandro Colomar <alx@kernel.org>
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// SPDX-License-Identifier: BSD-3-Clause
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#ifndef SHADOW_INCLUDE_LIB_ATOI_A2I_H_
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#define SHADOW_INCLUDE_LIB_ATOI_A2I_H_
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#include <config.h>
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#include <errno.h>
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#include "atoi/strtoi.h"
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#include "atoi/strtou_noneg.h"
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#include "attr.h"
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/*
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* See the manual of these macros in liba2i's documentation:
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* <http://www.alejandro-colomar.es/share/dist/liba2i/git/HEAD/liba2i-HEAD.pdf>
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*/
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#define a2i(TYPE, n, s, ...) \
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( \
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_Generic((void (*)(TYPE, typeof(s))) 0, \
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void (*)(short, const char *): a2sh_c, \
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void (*)(short, const void *): a2sh_c, \
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void (*)(short, char *): a2sh_nc, \
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void (*)(short, void *): a2sh_nc, \
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void (*)(int, const char *): a2si_c, \
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void (*)(int, const void *): a2si_c, \
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void (*)(int, char *): a2si_nc, \
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void (*)(int, void *): a2si_nc, \
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void (*)(long, const char *): a2sl_c, \
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void (*)(long, const void *): a2sl_c, \
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void (*)(long, char *): a2sl_nc, \
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void (*)(long, void *): a2sl_nc, \
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void (*)(long long, const char *): a2sll_c, \
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void (*)(long long, const void *): a2sll_c, \
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void (*)(long long, char *): a2sll_nc, \
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void (*)(long long, void *): a2sll_nc, \
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void (*)(unsigned short, const char *): a2uh_c, \
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void (*)(unsigned short, const void *): a2uh_c, \
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void (*)(unsigned short, char *): a2uh_nc, \
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void (*)(unsigned short, void *): a2uh_nc, \
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void (*)(unsigned int, const char *): a2ui_c, \
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void (*)(unsigned int, const void *): a2ui_c, \
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void (*)(unsigned int, char *): a2ui_nc, \
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void (*)(unsigned int, void *): a2ui_nc, \
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void (*)(unsigned long, const char *): a2ul_c, \
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void (*)(unsigned long, const void *): a2ul_c, \
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void (*)(unsigned long, char *): a2ul_nc, \
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void (*)(unsigned long, void *): a2ul_nc, \
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void (*)(unsigned long long, const char *): a2ull_c, \
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void (*)(unsigned long long, const void *): a2ull_c, \
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void (*)(unsigned long long, char *): a2ull_nc, \
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void (*)(unsigned long long, void *): a2ull_nc \
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)(n, s, __VA_ARGS__) \
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)
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#define a2sh(n, s, ...) \
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( \
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_Generic(s, \
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const char *: a2sh_c, \
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const void *: a2sh_c, \
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char *: a2sh_nc, \
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void *: a2sh_nc \
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)(n, s, __VA_ARGS__) \
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)
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#define a2si(n, s, ...) \
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( \
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_Generic(s, \
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const char *: a2si_c, \
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const void *: a2si_c, \
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char *: a2si_nc, \
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void *: a2si_nc \
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)(n, s, __VA_ARGS__) \
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)
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#define a2sl(n, s, ...) \
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( \
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_Generic(s, \
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const char *: a2sl_c, \
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const void *: a2sl_c, \
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char *: a2sl_nc, \
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void *: a2sl_nc \
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)(n, s, __VA_ARGS__) \
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)
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#define a2sll(n, s, ...) \
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( \
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_Generic(s, \
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const char *: a2sll_c, \
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const void *: a2sll_c, \
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char *: a2sll_nc, \
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void *: a2sll_nc \
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)(n, s, __VA_ARGS__) \
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)
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#define a2uh(n, s, ...) \
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( \
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_Generic(s, \
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const char *: a2uh_c, \
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const void *: a2uh_c, \
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char *: a2uh_nc, \
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void *: a2uh_nc \
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)(n, s, __VA_ARGS__) \
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)
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#define a2ui(n, s, ...) \
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( \
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_Generic(s, \
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const char *: a2ui_c, \
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const void *: a2ui_c, \
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char *: a2ui_nc, \
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void *: a2ui_nc \
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)(n, s, __VA_ARGS__) \
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)
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#define a2ul(n, s, ...) \
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( \
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_Generic(s, \
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const char *: a2ul_c, \
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const void *: a2ul_c, \
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char *: a2ul_nc, \
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void *: a2ul_nc \
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)(n, s, __VA_ARGS__) \
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)
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#define a2ull(n, s, ...) \
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( \
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_Generic(s, \
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const char *: a2ull_c, \
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const void *: a2ull_c, \
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char *: a2ull_nc, \
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void *: a2ull_nc \
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)(n, s, __VA_ARGS__) \
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)
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ATTR_STRING(2) ATTR_ACCESS(write_only, 1) ATTR_ACCESS(write_only, 3)
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inline int a2sh_c(short *restrict n, const char *s,
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const char **restrict endp, int base, short min, short max);
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ATTR_STRING(2) ATTR_ACCESS(write_only, 1) ATTR_ACCESS(write_only, 3)
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inline int a2si_c(int *restrict n, const char *s,
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const char **restrict endp, int base, int min, int max);
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ATTR_STRING(2) ATTR_ACCESS(write_only, 1) ATTR_ACCESS(write_only, 3)
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inline int a2sl_c(long *restrict n, const char *s,
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const char **restrict endp, int base, long min, long max);
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ATTR_STRING(2) ATTR_ACCESS(write_only, 1) ATTR_ACCESS(write_only, 3)
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inline int a2sll_c(long long *restrict n, const char *s,
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const char **restrict endp, int base, long long min, long long max);
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ATTR_STRING(2) ATTR_ACCESS(write_only, 1) ATTR_ACCESS(write_only, 3)
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inline int a2uh_c(unsigned short *restrict n, const char *s,
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const char **restrict endp, int base, unsigned short min,
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unsigned short max);
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ATTR_STRING(2) ATTR_ACCESS(write_only, 1) ATTR_ACCESS(write_only, 3)
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inline int a2ui_c(unsigned int *restrict n, const char *s,
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const char **restrict endp, int base, unsigned int min, unsigned int max);
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ATTR_STRING(2) ATTR_ACCESS(write_only, 1) ATTR_ACCESS(write_only, 3)
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inline int a2ul_c(unsigned long *restrict n, const char *s,
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const char **restrict endp, int base, unsigned long min, unsigned long max);
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ATTR_STRING(2) ATTR_ACCESS(write_only, 1) ATTR_ACCESS(write_only, 3)
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inline int a2ull_c(unsigned long long *restrict n, const char *s,
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const char **restrict endp, int base, unsigned long long min,
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unsigned long long max);
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ATTR_STRING(2) ATTR_ACCESS(write_only, 1) ATTR_ACCESS(write_only, 3)
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inline int a2sh_nc(short *restrict n, char *s,
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char **restrict endp, int base, short min, short max);
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ATTR_STRING(2) ATTR_ACCESS(write_only, 1) ATTR_ACCESS(write_only, 3)
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inline int a2si_nc(int *restrict n, char *s,
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char **restrict endp, int base, int min, int max);
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ATTR_STRING(2) ATTR_ACCESS(write_only, 1) ATTR_ACCESS(write_only, 3)
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inline int a2sl_nc(long *restrict n, char *s,
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char **restrict endp, int base, long min, long max);
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ATTR_STRING(2) ATTR_ACCESS(write_only, 1) ATTR_ACCESS(write_only, 3)
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inline int a2sll_nc(long long *restrict n, char *s,
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char **restrict endp, int base, long long min, long long max);
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ATTR_STRING(2) ATTR_ACCESS(write_only, 1) ATTR_ACCESS(write_only, 3)
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inline int a2uh_nc(unsigned short *restrict n, char *s,
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char **restrict endp, int base, unsigned short min, unsigned short max);
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ATTR_STRING(2) ATTR_ACCESS(write_only, 1) ATTR_ACCESS(write_only, 3)
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inline int a2ui_nc(unsigned int *restrict n, char *s,
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char **restrict endp, int base, unsigned int min, unsigned int max);
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ATTR_STRING(2) ATTR_ACCESS(write_only, 1) ATTR_ACCESS(write_only, 3)
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inline int a2ul_nc(unsigned long *restrict n, char *s,
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char **restrict endp, int base, unsigned long min, unsigned long max);
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ATTR_STRING(2) ATTR_ACCESS(write_only, 1) ATTR_ACCESS(write_only, 3)
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inline int a2ull_nc(unsigned long long *restrict n, char *s,
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char **restrict endp, int base, unsigned long long min,
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unsigned long long max);
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inline int
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a2sh_c(short *restrict n, const char *s,
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const char **restrict endp, int base, short min, short max)
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{
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return a2sh(n, (char *) s, (char **) endp, base, min, max);
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}
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inline int
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a2si_c(int *restrict n, const char *s,
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const char **restrict endp, int base, int min, int max)
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{
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return a2si(n, (char *) s, (char **) endp, base, min, max);
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}
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inline int
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a2sl_c(long *restrict n, const char *s,
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const char **restrict endp, int base, long min, long max)
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{
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return a2sl(n, (char *) s, (char **) endp, base, min, max);
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}
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inline int
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a2sll_c(long long *restrict n, const char *s,
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const char **restrict endp, int base, long long min, long long max)
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{
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return a2sll(n, (char *) s, (char **) endp, base, min, max);
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}
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inline int
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a2uh_c(unsigned short *restrict n, const char *s,
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const char **restrict endp, int base, unsigned short min,
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unsigned short max)
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{
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return a2uh(n, (char *) s, (char **) endp, base, min, max);
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}
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inline int
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a2ui_c(unsigned int *restrict n, const char *s,
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const char **restrict endp, int base, unsigned int min, unsigned int max)
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{
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return a2ui(n, (char *) s, (char **) endp, base, min, max);
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}
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inline int
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a2ul_c(unsigned long *restrict n, const char *s,
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const char **restrict endp, int base, unsigned long min, unsigned long max)
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{
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return a2ul(n, (char *) s, (char **) endp, base, min, max);
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}
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inline int
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a2ull_c(unsigned long long *restrict n, const char *s,
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const char **restrict endp, int base, unsigned long long min,
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unsigned long long max)
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{
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return a2ull(n, (char *) s, (char **) endp, base, min, max);
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}
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inline int
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a2sh_nc(short *restrict n, char *s,
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char **restrict endp, int base, short min, short max)
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{
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int status;
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*n = strtoi_(s, endp, base, min, max, &status);
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if (status != 0) {
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errno = status;
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return -1;
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}
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return 0;
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}
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inline int
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a2si_nc(int *restrict n, char *s,
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char **restrict endp, int base, int min, int max)
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{
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int status;
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*n = strtoi_(s, endp, base, min, max, &status);
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if (status != 0) {
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errno = status;
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return -1;
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}
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return 0;
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}
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inline int
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a2sl_nc(long *restrict n, char *s,
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char **restrict endp, int base, long min, long max)
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{
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int status;
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*n = strtoi_(s, endp, base, min, max, &status);
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if (status != 0) {
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errno = status;
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return -1;
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}
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return 0;
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}
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inline int
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a2sll_nc(long long *restrict n, char *s,
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char **restrict endp, int base, long long min, long long max)
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{
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int status;
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*n = strtoi_(s, endp, base, min, max, &status);
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if (status != 0) {
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errno = status;
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return -1;
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}
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return 0;
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}
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inline int
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a2uh_nc(unsigned short *restrict n, char *s,
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char **restrict endp, int base, unsigned short min,
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unsigned short max)
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{
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int status;
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*n = strtou_noneg(s, endp, base, min, max, &status);
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if (status != 0) {
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errno = status;
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return -1;
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}
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return 0;
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}
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inline int
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a2ui_nc(unsigned int *restrict n, char *s,
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char **restrict endp, int base, unsigned int min, unsigned int max)
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{
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int status;
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*n = strtou_noneg(s, endp, base, min, max, &status);
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if (status != 0) {
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errno = status;
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return -1;
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}
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return 0;
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}
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inline int
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a2ul_nc(unsigned long *restrict n, char *s,
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char **restrict endp, int base, unsigned long min, unsigned long max)
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{
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int status;
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*n = strtou_noneg(s, endp, base, min, max, &status);
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if (status != 0) {
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errno = status;
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return -1;
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}
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return 0;
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}
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inline int
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a2ull_nc(unsigned long long *restrict n, char *s,
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char **restrict endp, int base, unsigned long long min,
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unsigned long long max)
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{
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int status;
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*n = strtou_noneg(s, endp, base, min, max, &status);
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if (status != 0) {
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errno = status;
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return -1;
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}
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return 0;
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}
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#endif // include guard
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