| /* 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 */ |