diff options
Diffstat (limited to 'gl/lib/regex_internal.h')
| -rw-r--r-- | gl/lib/regex_internal.h | 106 |
1 files changed, 45 insertions, 61 deletions
diff --git a/gl/lib/regex_internal.h b/gl/lib/regex_internal.h index f6ebfb00..57a455b1 100644 --- a/gl/lib/regex_internal.h +++ b/gl/lib/regex_internal.h @@ -1,19 +1,19 @@ /* Extended regular expression matching and search library. - Copyright (C) 2002-2020 Free Software Foundation, Inc. + Copyright (C) 2002-2022 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>. The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU General Public + modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either - version 3 of the License, or (at your option) any later version. + version 2.1 of the License, or (at your option) any later version. The GNU C Library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - General Public License for more details. + Lesser General Public License for more details. - You should have received a copy of the GNU General Public + You should have received a copy of the GNU Lesser General Public License along with the GNU C Library; if not, see <https://www.gnu.org/licenses/>. */ @@ -32,6 +32,10 @@ #include <stdbool.h> #include <stdint.h> +#ifndef _LIBC +# include <dynarray.h> +#endif + #include <intprops.h> #include <verify.h> @@ -49,14 +53,14 @@ # define lock_fini(lock) ((void) 0) # define lock_lock(lock) __libc_lock_lock (lock) # define lock_unlock(lock) __libc_lock_unlock (lock) -#elif defined GNULIB_LOCK && !defined USE_UNLOCKED_IO +#elif defined GNULIB_LOCK && !defined GNULIB_REGEX_SINGLE_THREAD # include "glthread/lock.h" # define lock_define(name) gl_lock_define (, name) # define lock_init(lock) glthread_lock_init (&(lock)) # define lock_fini(lock) glthread_lock_destroy (&(lock)) # define lock_lock(lock) glthread_lock_lock (&(lock)) # define lock_unlock(lock) glthread_lock_unlock (&(lock)) -#elif defined GNULIB_PTHREAD && !defined USE_UNLOCKED_IO +#elif defined GNULIB_PTHREAD && !defined GNULIB_REGEX_SINGLE_THREAD # include <pthread.h> # define lock_define(name) pthread_mutex_t name; # define lock_init(lock) pthread_mutex_init (&(lock), 0) @@ -77,6 +81,14 @@ # define isblank(ch) ((ch) == ' ' || (ch) == '\t') #endif +/* regex code assumes isascii has its usual numeric meaning, + even if the portable character set uses EBCDIC encoding, + and even if wint_t is wider than int. */ +#ifndef _LIBC +# undef isascii +# define isascii(c) (((c) & ~0x7f) == 0) +#endif + #ifdef _LIBC # ifndef _RE_DEFINE_LOCALE_FUNCTIONS # define _RE_DEFINE_LOCALE_FUNCTIONS 1 @@ -104,10 +116,6 @@ # define gettext_noop(String) String #endif -#if (defined MB_CUR_MAX && HAVE_WCTYPE_H && HAVE_ISWCTYPE) || _LIBC -# define RE_ENABLE_I18N -#endif - /* Number of ASCII characters. */ #define ASCII_CHARS 0x80 @@ -138,6 +146,11 @@ # define __regfree regfree #endif /* not _LIBC */ +/* Types related to integers. Unless protected by #ifdef _LIBC, the + regex code should avoid exact-width types like int32_t and uint64_t + as some non-GCC platforms lack them, an issue when this code is + used in Gnulib. */ + #ifndef SSIZE_MAX # define SSIZE_MAX ((ssize_t) (SIZE_MAX / 2)) #endif @@ -234,10 +247,8 @@ typedef enum SIMPLE_BRACKET = 3, OP_BACK_REF = 4, OP_PERIOD = 5, -#ifdef RE_ENABLE_I18N COMPLEX_BRACKET = 6, OP_UTF8_PERIOD = 7, -#endif /* RE_ENABLE_I18N */ /* We define EPSILON_BIT as a macro so that OP_OPEN_SUBEXP is used when the debugger shows values of this enum type. */ @@ -275,30 +286,29 @@ typedef enum } re_token_type_t; -#ifdef RE_ENABLE_I18N typedef struct { /* Multibyte characters. */ wchar_t *mbchars; +#ifdef _LIBC /* Collating symbols. */ -# ifdef _LIBC int32_t *coll_syms; -# endif +#endif +#ifdef _LIBC /* Equivalence classes. */ -# ifdef _LIBC int32_t *equiv_classes; -# endif +#endif /* Range expressions. */ -# ifdef _LIBC +#ifdef _LIBC uint32_t *range_starts; uint32_t *range_ends; -# else /* not _LIBC */ +#else wchar_t *range_starts; wchar_t *range_ends; -# endif /* not _LIBC */ +#endif /* Character classes. */ wctype_t *char_classes; @@ -321,7 +331,6 @@ typedef struct /* # of character classes. */ Idx nchar_classes; } re_charset_t; -#endif /* RE_ENABLE_I18N */ typedef struct { @@ -329,13 +338,11 @@ typedef struct { unsigned char c; /* for CHARACTER */ re_bitset_ptr_t sbcset; /* for SIMPLE_BRACKET */ -#ifdef RE_ENABLE_I18N re_charset_t *mbcset; /* for COMPLEX_BRACKET */ -#endif /* RE_ENABLE_I18N */ Idx idx; /* for BACK_REF */ re_context_type ctx_type; /* for ANCHOR */ } opr; -#if __GNUC__ >= 2 && !defined __STRICT_ANSI__ +#if (__GNUC__ >= 2 || defined __clang__) && !defined __STRICT_ANSI__ re_token_type_t type : 8; #else re_token_type_t type; @@ -343,12 +350,10 @@ typedef struct unsigned int constraint : 10; /* context constraint */ unsigned int duplicated : 1; unsigned int opt_subexp : 1; -#ifdef RE_ENABLE_I18N unsigned int accept_mb : 1; /* These 2 bits can be moved into the union if needed (e.g. if running out of bits; move opr.c to opr.c.c and move the flags to opr.c.flags). */ unsigned int mb_partial : 1; -#endif unsigned int word_char : 1; } re_token_t; @@ -363,12 +368,10 @@ struct re_string_t REG_ICASE, upper cases of the string are stored, otherwise MBS points the same address that RAW_MBS points. */ unsigned char *mbs; -#ifdef RE_ENABLE_I18N /* Store the wide character string which is corresponding to MBS. */ wint_t *wcs; Idx *offsets; mbstate_t cur_state; -#endif /* Index in RAW_MBS. Each character mbs[i] corresponds to raw_mbs[raw_mbs_idx + i]. */ Idx raw_mbs_idx; @@ -436,25 +439,6 @@ typedef struct re_dfa_t re_dfa_t; #define re_string_skip_bytes(pstr,idx) ((pstr)->cur_idx += (idx)) #define re_string_set_index(pstr,idx) ((pstr)->cur_idx = (idx)) -#if defined _LIBC || HAVE_ALLOCA -# include <alloca.h> -#endif - -#ifndef _LIBC -# if HAVE_ALLOCA -/* The OS usually guarantees only one guard page at the bottom of the stack, - and a page size can be as small as 4096 bytes. So we cannot safely - allocate anything larger than 4096 bytes. Also care for the possibility - of a few compiler-allocated temporary stack slots. */ -# define __libc_use_alloca(n) ((n) < 4032) -# else -/* alloca is implemented with malloc, so just use malloc. */ -# define __libc_use_alloca(n) 0 -# undef alloca -# define alloca(n) malloc (n) -# endif -#endif - #ifdef _LIBC # define MALLOC_0_IS_NONNULL 1 #elif !defined MALLOC_0_IS_NONNULL @@ -786,7 +770,6 @@ bitset_mask (bitset_t dest, const bitset_t src) dest[bitset_i] &= src[bitset_i]; } -#ifdef RE_ENABLE_I18N /* Functions for re_string. */ static int __attribute__ ((pure, unused)) @@ -810,15 +793,15 @@ re_string_wchar_at (const re_string_t *pstr, Idx idx) return (wint_t) pstr->wcs[idx]; } -# ifdef _LIBC -# include <locale/weight.h> -# endif +#ifdef _LIBC +# include <locale/weight.h> +#endif static int __attribute__ ((pure, unused)) re_string_elem_size_at (const re_string_t *pstr, Idx idx) { -# ifdef _LIBC +#ifdef _LIBC const unsigned char *p, *extra; const int32_t *table, *indirect; uint_fast32_t nrules = _NL_CURRENT_WORD (LC_COLLATE, _NL_COLLATE_NRULES); @@ -834,18 +817,19 @@ re_string_elem_size_at (const re_string_t *pstr, Idx idx) findidx (table, indirect, extra, &p, pstr->len - idx); return p - pstr->mbs - idx; } - else -# endif /* _LIBC */ - return 1; +#endif /* _LIBC */ + + return 1; } -#endif /* RE_ENABLE_I18N */ -#ifndef FALLTHROUGH -# if __GNUC__ < 7 -# define FALLTHROUGH ((void) 0) -# else +#ifdef _LIBC +# if __GNUC__ >= 7 # define FALLTHROUGH __attribute__ ((__fallthrough__)) +# else +# define FALLTHROUGH ((void) 0) # endif +#else +# include "attribute.h" #endif #endif /* _REGEX_INTERNAL_H */ |