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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 */