X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=lib%2Fregex.h;h=27b22261380e3dc7b89ee0f10661b2b1fc8ac820;hb=1bb384c44db25aef8f8b455cef22af32d8401abc;hp=b1ae24906c464882cb1b4f0926347b52ad9504a5;hpb=8335a4d6c7b4448cd0bcb6d0bebf1d456bcfdb17;p=gnulib.git diff --git a/lib/regex.h b/lib/regex.h index b1ae24906..27b222613 100644 --- a/lib/regex.h +++ b/lib/regex.h @@ -1,6 +1,6 @@ /* Definitions for data structures and routines for the regular expression library. - Copyright (C) 1985,1989-93,1995-98,2000,2001,2002,2003,2005,2006 + Copyright (C) 1985, 1989-1993, 1995-1998, 2000-2003, 2005-2006, 2009-2011 Free Software Foundation, Inc. This file is part of the GNU C Library. @@ -37,12 +37,6 @@ extern "C" { # define __USE_GNU_REGEX 1 #endif -#ifdef __VMS -/* VMS doesn't have `size_t' in , even though POSIX says it - should be there. */ -# include -#endif - #ifdef _REGEX_LARGE_OFFSETS /* Use types and values that are wide enough to represent signed and @@ -119,10 +113,10 @@ typedef unsigned long int reg_syntax_t; /* If this bit is set, then ^ and $ are always anchors (outside bracket expressions, of course). If this bit is not set, then it depends: - ^ is an anchor if it is at the beginning of a regular - expression or after an open-group or an alternation operator; - $ is an anchor if it is at the end of a regular expression, or - before a close-group or an alternation operator. + ^ is an anchor if it is at the beginning of a regular + expression or after an open-group or an alternation operator; + $ is an anchor if it is at the end of a regular expression, or + before a close-group or an alternation operator. This bit could be (re)combined with RE_CONTEXT_INDEP_OPS, because POSIX draft 11.2 says that * etc. in leading positions is undefined. @@ -224,8 +218,8 @@ typedef unsigned long int reg_syntax_t; whether ^ should be special. */ # define RE_CARET_ANCHORS_HERE (RE_ICASE << 1) -/* If this bit is set, then \{ cannot be first in an bre or - immediately after an alternation or begin-group operator. */ +/* If this bit is set, then \{ cannot be first in a regex or + immediately after an alternation, open-group or \} operator. */ # define RE_CONTEXT_INVALID_DUP (RE_CARET_ANCHORS_HERE << 1) /* If this bit is set, then no_sub will be set to 1 during @@ -322,7 +316,14 @@ extern reg_syntax_t re_syntax_options; # ifdef RE_DUP_MAX # undef RE_DUP_MAX # endif -/* If sizeof(int) == 2, then ((1 << 15) - 1) overflows. */ + +/* RE_DUP_MAX is 2**15 - 1 because an earlier implementation stored + the counter as a 2-byte signed integer. This is no longer true, so + RE_DUP_MAX could be increased to (INT_MAX / 10 - 1), or to + ((SIZE_MAX - 2) / 10 - 1) if _REGEX_LARGE_OFFSETS is defined. + However, there would be a huge performance problem if someone + actually used a pattern like a\{214748363\}, so RE_DUP_MAX retains + its historical value. */ # define RE_DUP_MAX (0x7fff) #endif /* defined __USE_GNU_REGEX */ @@ -493,8 +494,8 @@ struct re_pattern_buffer #endif unsigned int _REG_RE_NAME (regs_allocated) : 2; - /* Set to zero when `regex_compile' compiles a pattern; set to one - by `re_compile_fastmap' if it updates the fastmap. */ + /* Set to zero when `re_compile_pattern' compiles a pattern; set to + one by `re_compile_fastmap' if it updates the fastmap. */ unsigned int _REG_RE_NAME (fastmap_accurate) : 1; /* If set, `re_match_2' does not return information about @@ -608,8 +609,8 @@ extern regoff_t re_match_2 (struct re_pattern_buffer *__buffer, register data. Unless this function is called, the first search or match using - PATTERN_BUFFER will allocate its own register data, without - freeing the old data. */ + BUFFER will allocate its own register data, without freeing the old + data. */ extern void re_set_registers (struct re_pattern_buffer *__buffer, struct re_registers *__regs, __re_size_t __num_regs, @@ -624,37 +625,45 @@ extern int re_exec (const char *); #endif /* GCC 2.95 and later have "__restrict"; C99 compilers have - "restrict", and "configure" may have defined "restrict". */ -#ifndef __restrict -# if ! (2 < __GNUC__ || (2 == __GNUC__ && 95 <= __GNUC_MINOR__)) -# if defined restrict || 199901L <= __STDC_VERSION__ -# define __restrict restrict -# else -# define __restrict -# endif + "restrict", and "configure" may have defined "restrict". + Other compilers use __restrict, __restrict__, and _Restrict, and + 'configure' might #define 'restrict' to those words, so pick a + different name. */ +#ifndef _Restrict_ +# if 199901L <= __STDC_VERSION__ +# define _Restrict_ restrict +# elif 2 < __GNUC__ || (2 == __GNUC__ && 95 <= __GNUC_MINOR__) +# define _Restrict_ __restrict +# else +# define _Restrict_ # endif #endif -/* gcc 3.1 and up support the [restrict] syntax, but g++ doesn't. */ -#ifndef __restrict_arr -# if (__GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 1)) && !defined __cplusplus -# define __restrict_arr __restrict +/* gcc 3.1 and up support the [restrict] syntax. Don't trust + sys/cdefs.h's definition of __restrict_arr, though, as it + mishandles gcc -ansi -pedantic. */ +#ifndef _Restrict_arr_ +# if ((199901L <= __STDC_VERSION__ \ + || ((3 < __GNUC__ || (3 == __GNUC__ && 1 <= __GNUC_MINOR__)) \ + && !__STRICT_ANSI__)) \ + && !defined __GNUG__) +# define _Restrict_arr_ _Restrict_ # else -# define __restrict_arr +# define _Restrict_arr_ # endif #endif /* POSIX compatibility. */ -extern int regcomp (regex_t *__restrict __preg, - const char *__restrict __pattern, +extern int regcomp (regex_t *_Restrict_ __preg, + const char *_Restrict_ __pattern, int __cflags); -extern int regexec (const regex_t *__restrict __preg, - const char *__restrict __string, size_t __nmatch, - regmatch_t __pmatch[__restrict_arr], +extern int regexec (const regex_t *_Restrict_ __preg, + const char *_Restrict_ __string, size_t __nmatch, + regmatch_t __pmatch[_Restrict_arr_], int __eflags); -extern size_t regerror (int __errcode, const regex_t *__restrict __preg, - char *__restrict __errbuf, size_t __errbuf_size); +extern size_t regerror (int __errcode, const regex_t *_Restrict_ __preg, + char *_Restrict_ __errbuf, size_t __errbuf_size); extern void regfree (regex_t *__preg);