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/* op_reg_common.h
*
* Definitions common to by op.h and regexp.h
*
* Copyright (C) 2010, 2011 by Larry Wall and others
*
* You may distribute under the terms of either the GNU General Public
* License or the Artistic License, as specified in the README file.
*
*/
/* These defines are used in both op.h and regexp.h The definitions use the
* shift form so that ext/B/defsubs_h.PL will pick them up.
*
* Data structures used in the two headers have common fields, and in fact one
* is copied onto the other. This makes it easy to keep them in sync */
/* This tells where the first of these bits is. Setting it to 0 saved cycles
* and memory. I (khw) think the code will work if changed back, but haven't
* tested it */
/* Make sure to update ext/re/re.pm when changing this! */
#ifndef RXf_PMf_STD_PMMOD_SHIFT /* Only expand #include of this file once */
#define RXf_PMf_STD_PMMOD_SHIFT 0
/* The bits need to be ordered so that the msix are contiguous starting at bit
* RXf_PMf_STD_PMMOD_SHIFT, followed by the p. See STD_PAT_MODS and
* INT_PAT_MODS in regexp.h for the reason contiguity is needed */
/* Make sure to update lib/re.pm when changing these! */
#define RXf_PMf_MULTILINE (1 << (RXf_PMf_STD_PMMOD_SHIFT+0)) /* /m */
#define RXf_PMf_SINGLELINE (1 << (RXf_PMf_STD_PMMOD_SHIFT+1)) /* /s */
#define RXf_PMf_FOLD (1 << (RXf_PMf_STD_PMMOD_SHIFT+2)) /* /i */
#define RXf_PMf_EXTENDED (1 << (RXf_PMf_STD_PMMOD_SHIFT+3)) /* /x */
#define RXf_PMf_KEEPCOPY (1 << (RXf_PMf_STD_PMMOD_SHIFT+4)) /* /p */
/* The character set for the regex is stored in a field of more than one bit
* using an enum, for reasons of compactness and to ensure that the options are
* mutually exclusive */
/* Make sure to update ext/re/re.pm when changing this! */
typedef enum {
REGEX_DEPENDS_CHARSET = 0,
REGEX_LOCALE_CHARSET,
REGEX_UNICODE_CHARSET,
REGEX_ASCII_RESTRICTED_CHARSET,
REGEX_ASCII_MORE_RESTRICTED_CHARSET
} regex_charset;
#define _RXf_PMf_CHARSET_SHIFT ((RXf_PMf_STD_PMMOD_SHIFT)+5)
#define RXf_PMf_CHARSET (7 << (_RXf_PMf_CHARSET_SHIFT)) /* 3 bits */
/* Manually decorate these functions here with gcc-style attributes just to
* avoid making the regex_charset typedef global, which it would need to be for
* proto.h to understand it */
PERL_STATIC_INLINE void
set_regex_charset(U32 * const flags, const regex_charset cs)
__attribute__nonnull__(1);
PERL_STATIC_INLINE void
set_regex_charset(U32 * const flags, const regex_charset cs)
{
/* Sets the character set portion of 'flags' to 'cs', which is a member of
* the above enum */
*flags &= ~RXf_PMf_CHARSET;
*flags |= (cs << _RXf_PMf_CHARSET_SHIFT);
}
PERL_STATIC_INLINE regex_charset
get_regex_charset(const U32 flags)
__attribute__warn_unused_result__;
PERL_STATIC_INLINE regex_charset
get_regex_charset(const U32 flags)
{
/* Returns the enum corresponding to the character set in 'flags' */
return (regex_charset) ((flags & RXf_PMf_CHARSET) >> _RXf_PMf_CHARSET_SHIFT);
}
/* Next available bit after the above. Name begins with '_' so won't be
* exported by B */
#define _RXf_PMf_SHIFT_NEXT (RXf_PMf_STD_PMMOD_SHIFT+8)
/* Mask of the above bits. These need to be transferred from op_pmflags to
* re->extflags during compilation */
#define RXf_PMf_COMPILETIME (RXf_PMf_MULTILINE|RXf_PMf_SINGLELINE|RXf_PMf_CHARSET|RXf_PMf_FOLD|RXf_PMf_EXTENDED|RXf_PMf_KEEPCOPY)
/* These copies need to be numerical or defsubs_h.PL won't know about them. */
#define PMf_MULTILINE 1<<0
#define PMf_SINGLELINE 1<<1
#define PMf_FOLD 1<<2
#define PMf_EXTENDED 1<<3
#define PMf_KEEPCOPY 1<<4
#if PMf_MULTILINE != RXf_PMf_MULTILINE || PMf_SINGLELINE != RXf_PMf_SINGLELINE || PMf_FOLD != RXf_PMf_FOLD || PMf_EXTENDED != RXf_PMf_EXTENDED || PMf_KEEPCOPY != RXf_PMf_KEEPCOPY
# error RXf_PMf defines are wrong
#endif
#define PMf_COMPILETIME RXf_PMf_COMPILETIME
/* Error check that haven't left something out of this. This isn't done
* directly in the #define because doing so confuses regcomp.pl.
* (2**n - 1) is n 1 bits, so the below gets the contiguous bits between the
* beginning and ending shifts */
#if RXf_PMf_COMPILETIME != (((1 << (_RXf_PMf_SHIFT_NEXT))-1) \
& (~((1 << RXf_PMf_STD_PMMOD_SHIFT)-1)))
# error RXf_PMf_COMPILETIME is invalid
#endif
#endif /* Include only once */