/* we don't want to include this stuff if we are inside of
an external regex engine based on the core one - like re 'debug'*/
-#include "utf8.h"
+# include "utf8.h"
+
+typedef SSize_t regnode_offset;
struct regnode {
U8 flags;
struct regexp;
struct reg_substr_datum {
- SSize_t min_offset;
- SSize_t max_offset;
+ SSize_t min_offset; /* min pos (in chars) that substr must appear */
+ SSize_t max_offset /* max pos (in chars) that substr must appear */;
SV *substr; /* non-utf8 variant */
SV *utf8_substr; /* utf8 variant */
- SSize_t end_shift;
+ SSize_t end_shift; /* how many fixed chars must end the string */
};
struct reg_substr_data {
+ U8 check_ix; /* index into data[] of check substr */
struct reg_substr_datum data[3]; /* Actual array */
};
-#ifdef PERL_ANY_COW
-#define SV_SAVED_COPY SV *saved_copy; /* If non-NULL, SV which is COW from original */
-#else
-#define SV_SAVED_COPY
-#endif
+# ifdef PERL_ANY_COW
+# define SV_SAVED_COPY SV *saved_copy; /* If non-NULL, SV which is COW from original */
+# else
+# define SV_SAVED_COPY
+# endif
/* offsets within a string of a particular /(.)/ capture */
SSize_t start_tmp;
} regexp_paren_pair;
-#if defined(PERL_IN_REGCOMP_C) || defined(PERL_IN_UTF8_C)
-#define _invlist_union(a, b, output) _invlist_union_maybe_complement_2nd(a, b, FALSE, output)
-#define _invlist_intersection(a, b, output) _invlist_intersection_maybe_complement_2nd(a, b, FALSE, output)
+# if defined(PERL_IN_REGCOMP_C) || defined(PERL_IN_UTF8_C)
+# define _invlist_union(a, b, output) _invlist_union_maybe_complement_2nd(a, b, FALSE, output)
+# define _invlist_intersection(a, b, output) _invlist_intersection_maybe_complement_2nd(a, b, FALSE, output)
/* Subtracting b from a leaves in a everything that was there that isn't in b,
* that is the intersection of a with b's complement */
-#define _invlist_subtract(a, b, output) _invlist_intersection_maybe_complement_2nd(a, b, TRUE, output)
-#endif
+# define _invlist_subtract(a, b, output) _invlist_intersection_maybe_complement_2nd(a, b, TRUE, output)
+# endif
/* record the position of a (?{...}) within a pattern */
REGEXP *src_regex;
};
+/* array of reg_code_block's plus header info */
+
+struct reg_code_blocks {
+ int refcnt; /* we may be pointed to from a regex and from the savestack */
+ int count; /* how many code blocks */
+ struct reg_code_block *cb; /* array of reg_code_block's */
+};
+
/*
The regexp/REGEXP struct, see L<perlreapi> for further documentation
regexp's data array based on the data item's type.
*/
-#define _REGEXP_COMMON \
- /* what engine created this regexp? */ \
- const struct regexp_engine* engine; \
- REGEXP *mother_re; /* what re is this a lightweight copy of? */ \
- HV *paren_names; /* Optional hash of paren names */ \
- /* Information about the match that the perl core uses to */ \
- /* manage things */ \
- U32 extflags; /* Flags used both externally and internally */ \
- SSize_t minlen; /* mininum possible number of chars in string to match */\
- SSize_t minlenret; /* mininum possible number of chars in $& */ \
- STRLEN gofs; /* chars left of pos that we search from */ \
- /* substring data about strings that must appear in the */ \
- /* final match, used for optimisations */ \
- struct reg_substr_data *substrs; \
- U32 nparens; /* number of capture buffers */ \
- /* private engine specific data */ \
- U32 intflags; /* Engine Specific Internal flags */ \
- void *pprivate; /* Data private to the regex engine which */ \
- /* created this object. */ \
- /* Data about the last/current match. These are modified */ \
- /* during matching */ \
- U32 lastparen; /* last open paren matched */ \
- U32 lastcloseparen; /* last close paren matched */ \
- /* Array of offsets for (@-) and (@+) */ \
- regexp_paren_pair *offs; \
- /* saved or original string so \digit works forever. */ \
- char *subbeg; \
- SV_SAVED_COPY /* If non-NULL, SV which is COW from original */\
- SSize_t sublen; /* Length of string pointed by subbeg */ \
- SSize_t suboffset; /* byte offset of subbeg from logical start of str */ \
- SSize_t subcoffset; /* suboffset equiv, but in chars (for @-/@+) */ \
- /* Information about the match that isn't often used */ \
- /* offset from wrapped to the start of precomp */ \
- PERL_BITFIELD32 pre_prefix:4; \
- /* original flags used to compile the pattern, may differ */ \
- /* from extflags in various ways */ \
- PERL_BITFIELD32 compflags:9; \
- CV *qr_anoncv /* the anon sub wrapped round qr/(?{..})/ */
-
typedef struct regexp {
- _XPV_HEAD;
- _REGEXP_COMMON;
+ _XPV_HEAD;
+ const struct regexp_engine* engine; /* what engine created this regexp? */
+ REGEXP *mother_re; /* what re is this a lightweight copy of? */
+ HV *paren_names; /* Optional hash of paren names */
+
+ /*----------------------------------------------------------------------
+ * Information about the match that the perl core uses to manage things
+ */
+
+ U32 extflags; /* Flags used both externally and internally */
+ U32 nparens; /* number of capture buffers */
+ SSize_t minlen; /* minimum possible number of chars in string to match */
+ SSize_t minlenret; /* mininum possible number of chars in $& */
+ STRLEN gofs; /* chars left of pos that we search from */
+ /* substring data about strings that must appear in
+ * the final match, used for optimisations */
+ struct reg_substr_data *substrs;
+
+ /* private engine specific data */
+
+ void *pprivate; /* Data private to the regex engine which
+ * created this object. */
+ U32 intflags; /* Engine Specific Internal flags */
+
+ /*----------------------------------------------------------------------
+ * Data about the last/current match. These are modified during matching
+ */
+
+ U32 lastparen; /* highest close paren matched ($+) */
+ regexp_paren_pair *offs; /* Array of offsets for (@-) and (@+) */
+ char **recurse_locinput; /* used to detect infinite recursion, XXX: move to internal */
+ U32 lastcloseparen; /* last close paren matched ($^N) */
+
+ /*---------------------------------------------------------------------- */
+
+ /* offset from wrapped to the start of precomp */
+ PERL_BITFIELD32 pre_prefix:4;
+
+ /* original flags used to compile the pattern, may differ from
+ * extflags in various ways */
+ PERL_BITFIELD32 compflags:9;
+
+ /*---------------------------------------------------------------------- */
+
+ char *subbeg; /* saved or original string so \digit works forever. */
+ SV_SAVED_COPY /* If non-NULL, SV which is COW from original */
+ SSize_t sublen; /* Length of string pointed by subbeg */
+ SSize_t suboffset; /* byte offset of subbeg from logical start of str */
+ SSize_t subcoffset; /* suboffset equiv, but in chars (for @-/@+) */
+ SSize_t maxlen; /* minimum possible number of chars in string to match */
+
+ /*---------------------------------------------------------------------- */
+
+
+ CV *qr_anoncv; /* the anon sub wrapped round qr/(?{..})/ */
} regexp;
-#define RXp_PAREN_NAMES(rx) ((rx)->paren_names)
+
+# define RXp_PAREN_NAMES(rx) ((rx)->paren_names)
/* used for high speed searches */
typedef struct re_scream_pos_data_s
const U32 flags,
re_scream_pos_data *data);
SV* (*checkstr) (pTHX_ REGEXP * const rx);
- void (*free) (pTHX_ REGEXP * const rx);
+ void (*rxfree) (pTHX_ REGEXP * const rx);
void (*numbered_buff_FETCH) (pTHX_ REGEXP * const rx, const I32 paren,
SV * const sv);
void (*numbered_buff_STORE) (pTHX_ REGEXP * const rx, const I32 paren,
SV* (*named_buff_iter) (pTHX_ REGEXP * const rx, const SV * const lastkey,
const U32 flags);
SV* (*qr_package)(pTHX_ REGEXP * const rx);
-#ifdef USE_ITHREADS
+# ifdef USE_ITHREADS
void* (*dupe) (pTHX_ REGEXP * const rx, CLONE_PARAMS *param);
-#endif
+# endif
REGEXP* (*op_comp) (pTHX_ SV ** const patternp, int pat_count,
OP *expr, const struct regexp_engine* eng,
- REGEXP *VOL old_re,
+ REGEXP *old_re,
bool *is_bare_re, U32 orig_rx_flags, U32 pm_flags);
} regexp_engine;
paren name. >= 1 is reserved for actual numbered captures, i.e. $1,
$2 etc.
*/
-#define RX_BUFF_IDX_CARET_PREMATCH -5 /* ${^PREMATCH} */
-#define RX_BUFF_IDX_CARET_POSTMATCH -4 /* ${^POSTMATCH} */
-#define RX_BUFF_IDX_CARET_FULLMATCH -3 /* ${^MATCH} */
-#define RX_BUFF_IDX_PREMATCH -2 /* $` */
-#define RX_BUFF_IDX_POSTMATCH -1 /* $' */
-#define RX_BUFF_IDX_FULLMATCH 0 /* $& */
+# define RX_BUFF_IDX_CARET_PREMATCH -5 /* ${^PREMATCH} */
+# define RX_BUFF_IDX_CARET_POSTMATCH -4 /* ${^POSTMATCH} */
+# define RX_BUFF_IDX_CARET_FULLMATCH -3 /* ${^MATCH} */
+# define RX_BUFF_IDX_PREMATCH -2 /* $` */
+# define RX_BUFF_IDX_POSTMATCH -1 /* $' */
+# define RX_BUFF_IDX_FULLMATCH 0 /* $& */
/*
Flags that are passed to the named_buff and named_buff_iter
*/
/* The Tie::Hash::NamedCapture operation this is part of, if any */
-#define RXapif_FETCH 0x0001
-#define RXapif_STORE 0x0002
-#define RXapif_DELETE 0x0004
-#define RXapif_CLEAR 0x0008
-#define RXapif_EXISTS 0x0010
-#define RXapif_SCALAR 0x0020
-#define RXapif_FIRSTKEY 0x0040
-#define RXapif_NEXTKEY 0x0080
+# define RXapif_FETCH 0x0001
+# define RXapif_STORE 0x0002
+# define RXapif_DELETE 0x0004
+# define RXapif_CLEAR 0x0008
+# define RXapif_EXISTS 0x0010
+# define RXapif_SCALAR 0x0020
+# define RXapif_FIRSTKEY 0x0040
+# define RXapif_NEXTKEY 0x0080
/* Whether %+ or %- is being operated on */
-#define RXapif_ONE 0x0100 /* %+ */
-#define RXapif_ALL 0x0200 /* %- */
+# define RXapif_ONE 0x0100 /* %+ */
+# define RXapif_ALL 0x0200 /* %- */
/* Whether this is being called from a re:: function */
-#define RXapif_REGNAME 0x0400
-#define RXapif_REGNAMES 0x0800
-#define RXapif_REGNAMES_COUNT 0x1000
+# define RXapif_REGNAME 0x0400
+# define RXapif_REGNAMES 0x0800
+# define RXapif_REGNAMES_COUNT 0x1000
/*
-=head1 REGEXP Functions
-
=for apidoc Am|REGEXP *|SvRX|SV *sv
-Convenience macro to get the REGEXP from a SV. This is approximately
+Convenience macro to get the REGEXP from a SV. This is approximately
equivalent to the following snippet:
if (SvMAGICAL(sv))
if (SvTYPE(sv) == SVt_REGEXP)
return (REGEXP*) sv;
-NULL will be returned if a REGEXP* is not found.
+C<NULL> will be returned if a REGEXP* is not found.
=for apidoc Am|bool|SvRXOK|SV* sv
=cut
*/
-#define SvRX(sv) (Perl_get_re_arg(aTHX_ sv))
-#define SvRXOK(sv) (Perl_get_re_arg(aTHX_ sv) ? TRUE : FALSE)
+# define SvRX(sv) (Perl_get_re_arg(aTHX_ sv))
+# define SvRXOK(sv) cBOOL(Perl_get_re_arg(aTHX_ sv))
/* Flags stored in regexp->extflags
*
*/
-#include "op_reg_common.h"
-
-#define RXf_PMf_STD_PMMOD (RXf_PMf_MULTILINE|RXf_PMf_SINGLELINE|RXf_PMf_FOLD|RXf_PMf_EXTENDED)
-
-#define CASE_STD_PMMOD_FLAGS_PARSE_SET(pmfl) \
- case IGNORE_PAT_MOD: *(pmfl) |= RXf_PMf_FOLD; break; \
- case MULTILINE_PAT_MOD: *(pmfl) |= RXf_PMf_MULTILINE; break; \
- case SINGLE_PAT_MOD: *(pmfl) |= RXf_PMf_SINGLELINE; break; \
- case XTENDED_PAT_MOD: *(pmfl) |= RXf_PMf_EXTENDED; break
+# include "op_reg_common.h"
+
+# define RXf_PMf_STD_PMMOD (RXf_PMf_MULTILINE|RXf_PMf_SINGLELINE|RXf_PMf_FOLD|RXf_PMf_EXTENDED|RXf_PMf_EXTENDED_MORE|RXf_PMf_NOCAPTURE)
+
+# define CASE_STD_PMMOD_FLAGS_PARSE_SET(pmfl, x_count) \
+ case IGNORE_PAT_MOD: *(pmfl) |= RXf_PMf_FOLD; break; \
+ case MULTILINE_PAT_MOD: *(pmfl) |= RXf_PMf_MULTILINE; break; \
+ case SINGLE_PAT_MOD: *(pmfl) |= RXf_PMf_SINGLELINE; break; \
+ case XTENDED_PAT_MOD: if (x_count == 0) { \
+ *(pmfl) |= RXf_PMf_EXTENDED; \
+ *(pmfl) &= ~RXf_PMf_EXTENDED_MORE; \
+ } \
+ else { \
+ *(pmfl) |= RXf_PMf_EXTENDED \
+ |RXf_PMf_EXTENDED_MORE; \
+ } \
+ (x_count)++; break; \
+ case NOCAPTURE_PAT_MOD: *(pmfl) |= RXf_PMf_NOCAPTURE; break;
/* Note, includes charset ones, assumes 0 is the default for them */
-#define STD_PMMOD_FLAGS_CLEAR(pmfl) \
- *(pmfl) &= ~(RXf_PMf_FOLD|RXf_PMf_MULTILINE|RXf_PMf_SINGLELINE|RXf_PMf_EXTENDED|RXf_PMf_CHARSET)
+# define STD_PMMOD_FLAGS_CLEAR(pmfl) \
+ *(pmfl) &= ~(RXf_PMf_FOLD|RXf_PMf_MULTILINE|RXf_PMf_SINGLELINE|RXf_PMf_EXTENDED|RXf_PMf_EXTENDED_MORE|RXf_PMf_CHARSET|RXf_PMf_NOCAPTURE)
/* chars and strings used as regex pattern modifiers
* Singular is a 'c'har, plural is a "string"
* for compatibility reasons with Regexp::Common which highjacked (?k:...)
* for its own uses. So 'k' is out as well.
*/
-#define DEFAULT_PAT_MOD '^' /* Short for all the default modifiers */
-#define EXEC_PAT_MOD 'e'
-#define KEEPCOPY_PAT_MOD 'p'
-#define ONCE_PAT_MOD 'o'
-#define GLOBAL_PAT_MOD 'g'
-#define CONTINUE_PAT_MOD 'c'
-#define MULTILINE_PAT_MOD 'm'
-#define SINGLE_PAT_MOD 's'
-#define IGNORE_PAT_MOD 'i'
-#define XTENDED_PAT_MOD 'x'
-#define NONDESTRUCT_PAT_MOD 'r'
-#define LOCALE_PAT_MOD 'l'
-#define UNICODE_PAT_MOD 'u'
-#define DEPENDS_PAT_MOD 'd'
-#define ASCII_RESTRICT_PAT_MOD 'a'
-
-#define ONCE_PAT_MODS "o"
-#define KEEPCOPY_PAT_MODS "p"
-#define EXEC_PAT_MODS "e"
-#define LOOP_PAT_MODS "gc"
-#define NONDESTRUCT_PAT_MODS "r"
-#define LOCALE_PAT_MODS "l"
-#define UNICODE_PAT_MODS "u"
-#define DEPENDS_PAT_MODS "d"
-#define ASCII_RESTRICT_PAT_MODS "a"
-#define ASCII_MORE_RESTRICT_PAT_MODS "aa"
+# define DEFAULT_PAT_MOD '^' /* Short for all the default modifiers */
+# define EXEC_PAT_MOD 'e'
+# define KEEPCOPY_PAT_MOD 'p'
+# define NOCAPTURE_PAT_MOD 'n'
+# define ONCE_PAT_MOD 'o'
+# define GLOBAL_PAT_MOD 'g'
+# define CONTINUE_PAT_MOD 'c'
+# define MULTILINE_PAT_MOD 'm'
+# define SINGLE_PAT_MOD 's'
+# define IGNORE_PAT_MOD 'i'
+# define XTENDED_PAT_MOD 'x'
+# define NONDESTRUCT_PAT_MOD 'r'
+# define LOCALE_PAT_MOD 'l'
+# define UNICODE_PAT_MOD 'u'
+# define DEPENDS_PAT_MOD 'd'
+# define ASCII_RESTRICT_PAT_MOD 'a'
+
+# define ONCE_PAT_MODS "o"
+# define KEEPCOPY_PAT_MODS "p"
+# define NOCAPTURE_PAT_MODS "n"
+# define EXEC_PAT_MODS "e"
+# define LOOP_PAT_MODS "gc"
+# define NONDESTRUCT_PAT_MODS "r"
+# define LOCALE_PAT_MODS "l"
+# define UNICODE_PAT_MODS "u"
+# define DEPENDS_PAT_MODS "d"
+# define ASCII_RESTRICT_PAT_MODS "a"
+# define ASCII_MORE_RESTRICT_PAT_MODS "aa"
/* This string is expected by regcomp.c to be ordered so that the first
* character is the flag in bit RXf_PMf_STD_PMMOD_SHIFT of extflags; the next
* character is bit +1, etc. */
-#define STD_PAT_MODS "msix"
+# define STD_PAT_MODS "msixxn"
-#define CHARSET_PAT_MODS ASCII_RESTRICT_PAT_MODS DEPENDS_PAT_MODS LOCALE_PAT_MODS UNICODE_PAT_MODS
+# define CHARSET_PAT_MODS ASCII_RESTRICT_PAT_MODS DEPENDS_PAT_MODS LOCALE_PAT_MODS UNICODE_PAT_MODS
/* This string is expected by XS_re_regexp_pattern() in universal.c to be ordered
* so that the first character is the flag in bit RXf_PMf_STD_PMMOD_SHIFT of
* extflags; the next character is in bit +1, etc. */
-#define INT_PAT_MODS STD_PAT_MODS KEEPCOPY_PAT_MODS
+# define INT_PAT_MODS STD_PAT_MODS KEEPCOPY_PAT_MODS
-#define EXT_PAT_MODS ONCE_PAT_MODS KEEPCOPY_PAT_MODS
-#define QR_PAT_MODS STD_PAT_MODS EXT_PAT_MODS CHARSET_PAT_MODS
-#define M_PAT_MODS QR_PAT_MODS LOOP_PAT_MODS
-#define S_PAT_MODS M_PAT_MODS EXEC_PAT_MODS NONDESTRUCT_PAT_MODS
+# define EXT_PAT_MODS ONCE_PAT_MODS KEEPCOPY_PAT_MODS NOCAPTURE_PAT_MODS
+# define QR_PAT_MODS STD_PAT_MODS EXT_PAT_MODS CHARSET_PAT_MODS
+# define M_PAT_MODS QR_PAT_MODS LOOP_PAT_MODS
+# define S_PAT_MODS M_PAT_MODS EXEC_PAT_MODS NONDESTRUCT_PAT_MODS
/*
* NOTE: if you modify any RXf flags you should run regen.pl or
*
*/
-/* Leave some space, so future bit allocations can go either in the shared or
- * unshared area without affecting binary compatibility */
-#define RXf_BASE_SHIFT (_RXf_PMf_SHIFT_NEXT)
-
/*
- Set in Perl_pmruntime if op_flags & OPf_SPECIAL, i.e. split. Will
- be used by regex engines to check whether they should set
- RXf_SKIPWHITE
+ Set in Perl_pmruntime for a split. Will be used by regex engines to
+ check whether they should set RXf_SKIPWHITE
*/
-#define RXf_SPLIT (1<<(RXf_BASE_SHIFT-1))
-#if RXf_SPLIT != RXf_PMf_SPLIT
-# error "RXf_SPLIT does not match RXf_PMf_SPLIT"
-#endif
-
-/* Manually decorate this function with gcc-style attributes just to
- * avoid having to restructure the header files and their called order,
- * as proto.h would have to be included before this file, and isn't */
-
-PERL_STATIC_INLINE const char *
-get_regex_charset_name(const U32 flags, STRLEN* const lenp)
- __attribute__warn_unused_result__;
-
-#define MAX_CHARSET_NAME_LENGTH 2
+# define RXf_SPLIT RXf_PMf_SPLIT
+
+/* Currently the regex flags occupy a single 32-bit word. Not all bits are
+ * currently used. The lower bits are shared with their corresponding PMf flag
+ * bits, up to but not including _RXf_PMf_SHIFT_NEXT. The unused bits
+ * immediately follow; finally the used RXf-only (unshared) bits, so that the
+ * highest bit in the word is used. This gathers all the unused bits as a pool
+ * in the middle, like so: 11111111111111110000001111111111
+ * where the '1's represent used bits, and the '0's unused. This design allows
+ * us to allocate off one end of the pool if we need to add a shared bit, and
+ * off the other end if we need a non-shared bit, without disturbing the other
+ * bits. This maximizes the likelihood of being able to change things without
+ * breaking binary compatibility.
+ *
+ * To add shared bits, do so in op_reg_common.h. This should change
+ * _RXf_PMf_SHIFT_NEXT so that things won't compile. Then come to regexp.h and
+ * op.h and adjust the constant adders in the definitions of RXf_BASE_SHIFT and
+ * Pmf_BASE_SHIFT down by the number of shared bits you added. That's it.
+ * Things should be binary compatible. But if either of these gets to having
+ * to subtract rather than add, leave at 0 and instead adjust all the entries
+ * that are in terms of it. But if the first one of those is already
+ * RXf_BASE_SHIFT+0, there are no bits left, and a redesign is in order.
+ *
+ * To remove unshared bits, just delete its entry. If you're where breaking
+ * binary compatibility is ok to do, you might want to adjust things to move
+ * the newly opened space so that it gets absorbed into the common pool.
+ *
+ * To add unshared bits, first use up any gaps in the middle. Otherwise,
+ * allocate off the low end until you get to RXf_BASE_SHIFT+0. If that isn't
+ * enough, move RXf_BASE_SHIFT down (if possible) and add the new bit at the
+ * other end instead; this preserves binary compatibility.
+ *
+ * For the regexp bits, PL_reg_extflags_name[] in regnodes.h has a comment
+ * giving which bits are used/unused */
-PERL_STATIC_INLINE const char *
-get_regex_charset_name(const U32 flags, STRLEN* const lenp)
-{
- /* Returns a string that corresponds to the name of the regex character set
- * given by 'flags', and *lenp is set the length of that string, which
- * cannot exceed MAX_CHARSET_NAME_LENGTH characters */
-
- *lenp = 1;
- switch (get_regex_charset(flags)) {
- case REGEX_DEPENDS_CHARSET: return DEPENDS_PAT_MODS;
- case REGEX_LOCALE_CHARSET: return LOCALE_PAT_MODS;
- case REGEX_UNICODE_CHARSET: return UNICODE_PAT_MODS;
- case REGEX_ASCII_RESTRICTED_CHARSET: return ASCII_RESTRICT_PAT_MODS;
- case REGEX_ASCII_MORE_RESTRICTED_CHARSET:
- *lenp = 2;
- return ASCII_MORE_RESTRICT_PAT_MODS;
- default:
- return "?"; /* Unknown */
- }
-}
-
-/* Anchor and GPOS related stuff */
-#define RXf_ANCH_BOL (1<<(RXf_BASE_SHIFT+0))
-#define RXf_ANCH_MBOL (1<<(RXf_BASE_SHIFT+1))
-#define RXf_ANCH_SBOL (1<<(RXf_BASE_SHIFT+2))
-#define RXf_ANCH_GPOS (1<<(RXf_BASE_SHIFT+3))
-#define RXf_GPOS_SEEN (1<<(RXf_BASE_SHIFT+4))
-#define RXf_GPOS_FLOAT (1<<(RXf_BASE_SHIFT+5))
-/* two bits here */
-#define RXf_ANCH (RXf_ANCH_BOL|RXf_ANCH_MBOL|RXf_ANCH_GPOS|RXf_ANCH_SBOL)
-#define RXf_GPOS_CHECK (RXf_GPOS_SEEN|RXf_ANCH_GPOS)
-#define RXf_ANCH_SINGLE (RXf_ANCH_SBOL|RXf_ANCH_GPOS)
+# define RXf_BASE_SHIFT (_RXf_PMf_SHIFT_NEXT + 2)
/* What we have seen */
-#define RXf_NO_INPLACE_SUBST (1<<(RXf_BASE_SHIFT+6))
-#define RXf_EVAL_SEEN (1<<(RXf_BASE_SHIFT+7))
-#define RXf_CANY_SEEN (1<<(RXf_BASE_SHIFT+8))
+# define RXf_NO_INPLACE_SUBST (1U<<(RXf_BASE_SHIFT+2))
+# define RXf_EVAL_SEEN (1U<<(RXf_BASE_SHIFT+3))
/* Special */
-#define RXf_NOSCAN (1<<(RXf_BASE_SHIFT+9))
-#define RXf_CHECK_ALL (1<<(RXf_BASE_SHIFT+10))
+# define RXf_UNBOUNDED_QUANTIFIER_SEEN (1U<<(RXf_BASE_SHIFT+4))
+# define RXf_CHECK_ALL (1U<<(RXf_BASE_SHIFT+5))
/* UTF8 related */
-#define RXf_MATCH_UTF8 (1<<(RXf_BASE_SHIFT+11)) /* $1 etc are utf8 */
+# define RXf_MATCH_UTF8 (1U<<(RXf_BASE_SHIFT+6)) /* $1 etc are utf8 */
/* Intuit related */
-#define RXf_USE_INTUIT_NOML (1<<(RXf_BASE_SHIFT+12))
-#define RXf_USE_INTUIT_ML (1<<(RXf_BASE_SHIFT+13))
-#define RXf_INTUIT_TAIL (1<<(RXf_BASE_SHIFT+14))
-#define RXf_USE_INTUIT (RXf_USE_INTUIT_NOML|RXf_USE_INTUIT_ML)
+# define RXf_USE_INTUIT_NOML (1U<<(RXf_BASE_SHIFT+7))
+# define RXf_USE_INTUIT_ML (1U<<(RXf_BASE_SHIFT+8))
+# define RXf_INTUIT_TAIL (1U<<(RXf_BASE_SHIFT+9))
+# define RXf_USE_INTUIT (RXf_USE_INTUIT_NOML|RXf_USE_INTUIT_ML)
+
+/* Do we have some sort of anchor? */
+# define RXf_IS_ANCHORED (1U<<(RXf_BASE_SHIFT+10))
/* Copy and tainted info */
-#define RXf_COPY_DONE (1<<(RXf_BASE_SHIFT+16))
+# define RXf_COPY_DONE (1U<<(RXf_BASE_SHIFT+11))
-/* during execution: pattern temporarily tainted by executing locale ops;
- * post-execution: $1 et al are tainted */
-#define RXf_TAINTED_SEEN (1<<(RXf_BASE_SHIFT+17))
+/* post-execution: $1 et al are tainted */
+# define RXf_TAINTED_SEEN (1U<<(RXf_BASE_SHIFT+12))
/* this pattern was tainted during compilation */
-#define RXf_TAINTED (1<<(RXf_BASE_SHIFT+18))
+# define RXf_TAINTED (1U<<(RXf_BASE_SHIFT+13))
/* Flags indicating special patterns */
-#define RXf_START_ONLY (1<<(RXf_BASE_SHIFT+19)) /* Pattern is /^/ */
-#define RXf_SKIPWHITE (1<<(RXf_BASE_SHIFT+20)) /* Pattern is for a split " " */
-#define RXf_WHITE (1<<(RXf_BASE_SHIFT+21)) /* Pattern is /\s+/ */
-#define RXf_NULL (1U<<(RXf_BASE_SHIFT+22)) /* Pattern is // */
-#if RXf_BASE_SHIFT+22 > 31
-# error Too many RXf_PMf bits used. See regnodes.h for any spare in middle
-#endif
+# define RXf_START_ONLY (1U<<(RXf_BASE_SHIFT+14)) /* Pattern is /^/ */
+# define RXf_SKIPWHITE (1U<<(RXf_BASE_SHIFT+15)) /* Pattern is for a */
+ /* split " " */
+# define RXf_WHITE (1U<<(RXf_BASE_SHIFT+16)) /* Pattern is /\s+/ */
+# define RXf_NULL (1U<<(RXf_BASE_SHIFT+17)) /* Pattern is // */
+
+/* See comments at the beginning of these defines about adding bits. The
+ * highest bit position should be used, so that if RXf_BASE_SHIFT gets
+ * increased, the #error below will be triggered so that you will be reminded
+ * to adjust things at the other end to keep the bit positions unchanged */
+# if RXf_BASE_SHIFT+17 > 31
+# error Too many RXf_PMf bits used. See comments at beginning of these for what to do
+# endif
/*
* NOTE: if you modify any RXf flags you should run regen.pl or
*
*/
-#if NO_TAINT_SUPPORT
-# define RX_ISTAINTED(prog) 0
-# define RX_TAINT_on(prog) NOOP
-# define RXp_MATCH_TAINTED(prog) 0
-# define RX_MATCH_TAINTED(prog) 0
-# define RXp_MATCH_TAINTED_on(prog) NOOP
-# define RX_MATCH_TAINTED_on(prog) NOOP
-# define RX_MATCH_TAINTED_off(prog) NOOP
-#else
-# define RX_ISTAINTED(prog) (RX_EXTFLAGS(prog) & RXf_TAINTED)
-# define RX_TAINT_on(prog) (RX_EXTFLAGS(prog) |= RXf_TAINTED)
-# define RXp_MATCH_TAINTED(prog) (RXp_EXTFLAGS(prog) & RXf_TAINTED_SEEN)
-# define RX_MATCH_TAINTED(prog) (RX_EXTFLAGS(prog) & RXf_TAINTED_SEEN)
-# define RXp_MATCH_TAINTED_on(prog) (RXp_EXTFLAGS(prog) |= RXf_TAINTED_SEEN)
-# define RX_MATCH_TAINTED_on(prog) (RX_EXTFLAGS(prog) |= RXf_TAINTED_SEEN)
-# define RX_MATCH_TAINTED_off(prog) (RX_EXTFLAGS(prog) &= ~RXf_TAINTED_SEEN)
-#endif
-
-#define RX_HAS_CUTGROUP(prog) ((prog)->intflags & PREGf_CUTGROUP_SEEN)
-#define RX_MATCH_TAINTED_set(prog, t) ((t) \
- ? RX_MATCH_TAINTED_on(prog) \
- : RX_MATCH_TAINTED_off(prog))
-
-#define RXp_MATCH_COPIED(prog) (RXp_EXTFLAGS(prog) & RXf_COPY_DONE)
-#define RX_MATCH_COPIED(prog) (RX_EXTFLAGS(prog) & RXf_COPY_DONE)
-#define RXp_MATCH_COPIED_on(prog) (RXp_EXTFLAGS(prog) |= RXf_COPY_DONE)
-#define RX_MATCH_COPIED_on(prog) (RX_EXTFLAGS(prog) |= RXf_COPY_DONE)
-#define RXp_MATCH_COPIED_off(prog) (RXp_EXTFLAGS(prog) &= ~RXf_COPY_DONE)
-#define RX_MATCH_COPIED_off(prog) (RX_EXTFLAGS(prog) &= ~RXf_COPY_DONE)
-#define RX_MATCH_COPIED_set(prog,t) ((t) \
- ? RX_MATCH_COPIED_on(prog) \
- : RX_MATCH_COPIED_off(prog))
-
-#define RXp_EXTFLAGS(rx) ((rx)->extflags)
-#define RXp_COMPFLAGS(rx) ((rx)->compflags)
+# ifdef NO_TAINT_SUPPORT
+# define RX_ISTAINTED(rx_sv) 0
+# define RXp_ISTAINTED(prog) 0
+# define RX_TAINT_on(rx_sv) NOOP
+# define RXp_MATCH_TAINTED(prog) 0
+# define RX_MATCH_TAINTED(rx_sv) 0
+# define RXp_MATCH_TAINTED_on(prog) NOOP
+# define RX_MATCH_TAINTED_on(rx_sv) NOOP
+# define RXp_MATCH_TAINTED_off(prog) NOOP
+# define RX_MATCH_TAINTED_off(rx_sv) NOOP
+# else
+# define RX_ISTAINTED(rx_sv) (RX_EXTFLAGS(rx_sv) & RXf_TAINTED)
+# define RXp_ISTAINTED(prog) (RXp_EXTFLAGS(prog) & RXf_TAINTED)
+# define RX_TAINT_on(rx_sv) (RX_EXTFLAGS(rx_sv) |= RXf_TAINTED)
+# define RXp_MATCH_TAINTED(prog) (RXp_EXTFLAGS(prog) & RXf_TAINTED_SEEN)
+# define RX_MATCH_TAINTED(rx_sv) (RX_EXTFLAGS(rx_sv) & RXf_TAINTED_SEEN)
+# define RXp_MATCH_TAINTED_on(prog) (RXp_EXTFLAGS(prog) |= RXf_TAINTED_SEEN)
+# define RX_MATCH_TAINTED_on(rx_sv) (RX_EXTFLAGS(rx_sv) |= RXf_TAINTED_SEEN)
+# define RXp_MATCH_TAINTED_off(prog) (RXp_EXTFLAGS(prog) &= ~RXf_TAINTED_SEEN)
+# define RX_MATCH_TAINTED_off(rx_sv) (RX_EXTFLAGS(rx_sv) &= ~RXf_TAINTED_SEEN)
+# endif
+
+# define RXp_HAS_CUTGROUP(prog) ((prog)->intflags & PREGf_CUTGROUP_SEEN)
+
+# define RX_MATCH_TAINTED_set(rx_sv, t) ((t) \
+ ? RX_MATCH_TAINTED_on(rx_sv) \
+ : RX_MATCH_TAINTED_off(rx_sv))
+
+# define RXp_MATCH_COPIED(prog) (RXp_EXTFLAGS(prog) & RXf_COPY_DONE)
+# define RX_MATCH_COPIED(rx_sv) (RX_EXTFLAGS(rx_sv) & RXf_COPY_DONE)
+# define RXp_MATCH_COPIED_on(prog) (RXp_EXTFLAGS(prog) |= RXf_COPY_DONE)
+# define RX_MATCH_COPIED_on(rx_sv) (RX_EXTFLAGS(rx_sv) |= RXf_COPY_DONE)
+# define RXp_MATCH_COPIED_off(prog) (RXp_EXTFLAGS(prog) &= ~RXf_COPY_DONE)
+# define RX_MATCH_COPIED_off(rx_sv) (RX_EXTFLAGS(rx_sv) &= ~RXf_COPY_DONE)
+# define RX_MATCH_COPIED_set(rx_sv,t) ((t) \
+ ? RX_MATCH_COPIED_on(rx_sv) \
+ : RX_MATCH_COPIED_off(rx_sv))
+
+# define RXp_EXTFLAGS(rx) ((rx)->extflags)
+# define RXp_COMPFLAGS(rx) ((rx)->compflags)
/* For source compatibility. We used to store these explicitly. */
-#define RX_PRECOMP(prog) (RX_WRAPPED(prog) + ReANY(prog)->pre_prefix)
-#define RX_PRECOMP_const(prog) (RX_WRAPPED_const(prog) + ReANY(prog)->pre_prefix)
+# define RX_PRECOMP(rx_sv) (RX_WRAPPED(rx_sv) \
+ + ReANY(rx_sv)->pre_prefix)
+# define RX_PRECOMP_const(rx_sv) (RX_WRAPPED_const(rx_sv) \
+ + ReANY(rx_sv)->pre_prefix)
/* FIXME? Are we hardcoding too much here and constraining plugin extension
writers? Specifically, the value 1 assumes that the wrapped version always
has exactly one character at the end, a ')'. Will that always be true? */
-#define RX_PRELEN(prog) (RX_WRAPLEN(prog) - ReANY(prog)->pre_prefix - 1)
-#define RX_WRAPPED(prog) ReANY(prog)->xpv_len_u.xpvlenu_pv
-#define RX_WRAPPED_const(prog) ((const char *)RX_WRAPPED(prog))
-#define RX_WRAPLEN(prog) SvCUR(prog)
-#define RX_CHECK_SUBSTR(prog) (ReANY(prog)->check_substr)
-#define RX_REFCNT(prog) SvREFCNT(prog)
-#define RX_EXTFLAGS(prog) RXp_EXTFLAGS(ReANY(prog))
-#define RX_COMPFLAGS(prog) RXp_COMPFLAGS(ReANY(prog))
-#define RX_ENGINE(prog) (ReANY(prog)->engine)
-#define RX_SUBBEG(prog) (ReANY(prog)->subbeg)
-#define RX_SUBOFFSET(prog) (ReANY(prog)->suboffset)
-#define RX_SUBCOFFSET(prog) (ReANY(prog)->subcoffset)
-#define RX_OFFS(prog) (ReANY(prog)->offs)
-#define RX_NPARENS(prog) (ReANY(prog)->nparens)
-#define RX_SUBLEN(prog) (ReANY(prog)->sublen)
-#define RX_MINLEN(prog) (ReANY(prog)->minlen)
-#define RX_MINLENRET(prog) (ReANY(prog)->minlenret)
-#define RX_GOFS(prog) (ReANY(prog)->gofs)
-#define RX_LASTPAREN(prog) (ReANY(prog)->lastparen)
-#define RX_LASTCLOSEPAREN(prog) (ReANY(prog)->lastcloseparen)
-#define RX_SAVED_COPY(prog) (ReANY(prog)->saved_copy)
+# define RX_PRELEN(rx_sv) (RX_WRAPLEN(rx_sv) \
+ - ReANY(rx_sv)->pre_prefix - 1)
+
+# define RX_WRAPPED(rx_sv) SvPVX(rx_sv)
+# define RX_WRAPPED_const(rx_sv) SvPVX_const(rx_sv)
+# define RX_WRAPLEN(rx_sv) SvCUR(rx_sv)
+# define RX_CHECK_SUBSTR(rx_sv) (ReANY(rx_sv)->check_substr)
+# define RX_REFCNT(rx_sv) SvREFCNT(rx_sv)
+# define RX_EXTFLAGS(rx_sv) RXp_EXTFLAGS(ReANY(rx_sv))
+# define RX_COMPFLAGS(rx_sv) RXp_COMPFLAGS(ReANY(rx_sv))
+# define RXp_ENGINE(prog) ((prog)->engine)
+# define RX_ENGINE(rx_sv) (RXp_ENGINE(ReANY(rx_sv)))
+# define RXp_SUBBEG(prog) (prog->subbeg)
+# define RX_SUBBEG(rx_sv) (RXp_SUBBEG(ReANY(rx_sv)))
+# define RXp_SUBOFFSET(prog) (prog->suboffset)
+# define RX_SUBOFFSET(rx_sv) (RXp_SUBOFFSET(ReANY(rx_sv)))
+# define RX_SUBCOFFSET(rx_sv) (ReANY(rx_sv)->subcoffset)
+# define RXp_OFFS(prog) (prog->offs)
+# define RX_OFFS(rx_sv) (RXp_OFFS(ReANY(rx_sv)))
+# define RXp_NPARENS(prog) (prog->nparens)
+# define RX_NPARENS(rx_sv) (RXp_NPARENS(ReANY(rx_sv)))
+# define RX_SUBLEN(rx_sv) (ReANY(rx_sv)->sublen)
+# define RXp_MINLEN(prog) (prog->minlen)
+# define RX_MINLEN(rx_sv) (RXp_MINLEN(ReANY(rx_sv)))
+# define RXp_MINLENRET(prog) (prog->minlenret)
+# define RX_MINLENRET(rx_sv) (RXp_MINLENRET(ReANY(rx_sv)))
+# define RXp_GOFS(prog) (prog->gofs)
+# define RX_GOFS(rx_sv) (RXp_GOFS(ReANY(rx_sv)))
+# define RX_LASTPAREN(rx_sv) (ReANY(rx_sv)->lastparen)
+# define RX_LASTCLOSEPAREN(rx_sv) (ReANY(rx_sv)->lastcloseparen)
+# define RXp_SAVED_COPY(prog) (prog->saved_copy)
+# define RX_SAVED_COPY(rx_sv) (RXp_SAVED_COPY(ReANY(rx_sv)))
/* last match was zero-length */
-#define RX_ZERO_LEN(prog) \
- (RX_OFFS(prog)[0].start + (SSize_t)RX_GOFS(prog) \
- == RX_OFFS(prog)[0].end)
+# define RXp_ZERO_LEN(prog) \
+ (RXp_OFFS(prog)[0].start + (SSize_t)RXp_GOFS(prog) \
+ == RXp_OFFS(prog)[0].end)
+# define RX_ZERO_LEN(rx_sv) (RXp_ZERO_LEN(ReANY(rx_sv)))
#endif /* PLUGGABLE_RE_EXTENSION */
/* Stuff that needs to be included in the pluggable extension goes below here */
#ifdef PERL_ANY_COW
-#define RX_MATCH_COPY_FREE(rx) \
- STMT_START {if (RX_SAVED_COPY(rx)) { \
- SV_CHECK_THINKFIRST_COW_DROP(RX_SAVED_COPY(rx)); \
+# define RXp_MATCH_COPY_FREE(prog) \
+ STMT_START {if (RXp_SAVED_COPY(prog)) { \
+ SV_CHECK_THINKFIRST_COW_DROP(RXp_SAVED_COPY(prog)); \
} \
- if (RX_MATCH_COPIED(rx)) { \
- Safefree(RX_SUBBEG(rx)); \
- RX_MATCH_COPIED_off(rx); \
+ if (RXp_MATCH_COPIED(prog)) { \
+ Safefree(RXp_SUBBEG(prog)); \
+ RXp_MATCH_COPIED_off(prog); \
}} STMT_END
#else
-#define RX_MATCH_COPY_FREE(rx) \
- STMT_START {if (RX_MATCH_COPIED(rx)) { \
- Safefree(RX_SUBBEG(rx)); \
- RX_MATCH_COPIED_off(rx); \
+# define RXp_MATCH_COPY_FREE(prog) \
+ STMT_START {if (RXp_MATCH_COPIED(prog)) { \
+ Safefree(RXp_SUBBEG(prog)); \
+ RXp_MATCH_COPIED_off(prog); \
}} STMT_END
#endif
-
-#define RXp_MATCH_UTF8(prog) (RXp_EXTFLAGS(prog) & RXf_MATCH_UTF8)
-#define RX_MATCH_UTF8(prog) (RX_EXTFLAGS(prog) & RXf_MATCH_UTF8)
-#define RX_MATCH_UTF8_on(prog) (RX_EXTFLAGS(prog) |= RXf_MATCH_UTF8)
-#define RX_MATCH_UTF8_off(prog) (RX_EXTFLAGS(prog) &= ~RXf_MATCH_UTF8)
-#define RX_MATCH_UTF8_set(prog, t) ((t) \
- ? RX_MATCH_UTF8_on(prog) \
- : RX_MATCH_UTF8_off(prog))
+#define RX_MATCH_COPY_FREE(rx_sv) RXp_MATCH_COPY_FREE(ReANY(rx_sv))
+
+#define RXp_MATCH_UTF8(prog) (RXp_EXTFLAGS(prog) & RXf_MATCH_UTF8)
+#define RX_MATCH_UTF8(rx_sv) (RX_EXTFLAGS(rx_sv) & RXf_MATCH_UTF8)
+#define RXp_MATCH_UTF8_on(prog) (RXp_EXTFLAGS(prog) |= RXf_MATCH_UTF8)
+#define RX_MATCH_UTF8_on(rx_sv) (RXp_MATCH_UTF8_on(ReANY(rx_sv)))
+#define RXp_MATCH_UTF8_off(prog) (RXp_EXTFLAGS(prog) &= ~RXf_MATCH_UTF8)
+#define RX_MATCH_UTF8_off(rx_sv) (RXp_MATCH_UTF8_off(ReANY(rx_sv))
+#define RXp_MATCH_UTF8_set(prog, t) ((t) \
+ ? RXp_MATCH_UTF8_on(prog) \
+ : RXp_MATCH_UTF8_off(prog))
+#define RX_MATCH_UTF8_set(rx_sv, t) (RXp_MATCH_UTF8_set(ReANY(rx_sv), t))
/* Whether the pattern stored at RX_WRAPPED is in UTF-8 */
-#define RX_UTF8(prog) SvUTF8(prog)
+#define RX_UTF8(rx_sv) SvUTF8(rx_sv)
/* bits in flags arg of Perl_regexec_flags() */
the start pos (so s/.\G// would fail
on second iteration */
-#if defined(__GNUC__) && !defined(PERL_GCC_BRACE_GROUPS_FORBIDDEN)
+#if defined(PERL_USE_GCC_BRACE_GROUPS)
# define ReREFCNT_inc(re) \
({ \
/* This is here to generate a casting warning if incorrect. */ \
# define ReREFCNT_dec(re) SvREFCNT_dec(re)
# define ReREFCNT_inc(re) ((REGEXP *) SvREFCNT_inc(re))
#endif
-#define ReANY(re) S_ReANY((const REGEXP *)(re))
+#define ReANY(re) Perl_ReANY((const REGEXP *)(re))
/* FIXME for plugins. */
STRLEN sublen; /* saved sublen field from rex */
STRLEN suboffset; /* saved suboffset field from rex */
STRLEN subcoffset; /* saved subcoffset field from rex */
+ SV *sv; /* $_ during (?{}) */
MAGIC *pos_magic; /* pos() magic attached to $_ */
SSize_t pos; /* the original value of pos() in pos_magic */
U8 pos_flags; /* flags to be restored; currently only MGf_BYTES*/
/* structures for holding and saving the state maintained by regmatch() */
#ifndef MAX_RECURSE_EVAL_NOCHANGE_DEPTH
-#define MAX_RECURSE_EVAL_NOCHANGE_DEPTH 1000
+# define MAX_RECURSE_EVAL_NOCHANGE_DEPTH 10
#endif
typedef I32 CHECKPOINT;
typedef struct regmatch_state {
int resume_state; /* where to jump to on return */
char *locinput; /* where to backtrack in string on failure */
+ char *loceol;
+ U8 *sr0; /* position of start of script run, or NULL */
union {
struct {
/* this first element must match u.yes */
struct regmatch_state *prev_yes_state;
- struct regmatch_state *prev_eval;
struct regmatch_state *prev_curlyx;
+ struct regmatch_state *prev_eval;
REGEXP *prev_rex;
CHECKPOINT cp; /* remember current savestack indexes */
CHECKPOINT lastcp;
- U32 close_paren; /* which close bracket is our end */
+ U32 close_paren; /* which close bracket is our end (+1) */
regnode *B; /* the node following us */
+ char *prev_recurse_locinput;
} eval;
struct {
struct regmatch_state *prev_yes_state;
I32 wanted;
I32 logical; /* saved copy of 'logical' var */
+ U8 count; /* number of beginning positions */
+ char *start;
+ char *end;
regnode *me; /* the IFMATCH/SUSPEND/UNLESSM node */
} ifmatch; /* and SUSPEND/UNLESSM */
} keeper;
/* quantifiers - these members are used for storing state for
- for the regops used to implement quantifiers */
+ the regops used to implement quantifiers */
struct {
/* this first element must match u.yes */
struct regmatch_state *prev_yes_state;
} u;
} regmatch_state;
+
+
/* how many regmatch_state structs to allocate as a single slab.
* We do it in 4K blocks for efficiency. The "3" is 2 for the next/prev
* pointers, plus 1 for any mythical malloc overhead. */
/*
- * Local variables:
- * c-indentation-style: bsd
- * c-basic-offset: 4
- * indent-tabs-mode: nil
- * End:
- *
* ex: set ts=8 sts=4 sw=4 et:
*/
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