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/* regexp.h
*
* Copyright (C) 1993, 1994, 1996, 1997, 1999, 2000, 2001, 2003,
* 2005, 2006, 2007, 2008 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.
*
*/
/*
* Definitions etc. for regexp(3) routines.
*
* Caveat: this is V8 regexp(3) [actually, a reimplementation thereof],
* not the System V one.
*/
#ifndef PLUGGABLE_RE_EXTENSION
/* 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'*/
struct regnode {
U8 flags;
U8 type;
U16 next_off;
};
typedef struct regnode regnode;
struct reg_substr_data;
struct reg_data;
struct reg_substr_datum {
I32 min_offset;
I32 max_offset;
SV *substr; /* non-utf8 variant */
SV *utf8_substr; /* utf8 variant */
};
struct reg_substr_data {
struct reg_substr_datum data[3]; /* Actual array */
};
typedef struct regexp {
I32 *startp;
I32 *endp;
regnode *regstclass;
struct reg_substr_data *substrs;
char *precomp; /* pre-compilation regular expression */
struct reg_data *data; /* Additional data. */
char *subbeg; /* saved or original string
so \digit works forever. */
U32 *offsets; /* offset annotations 20001228 MJD */
I32 sublen; /* Length of string pointed by subbeg */
I32 refcnt;
I32 minlen; /* mininum possible length of $& */
I32 prelen; /* length of precomp */
U32 nparens; /* number of parentheses */
U32 lastparen; /* last paren matched */
U32 lastcloseparen; /* last paren matched */
U32 reganch; /* Internal use only +
Tainted information used by regexec? */
regnode program[1]; /* Unwarranted chumminess with compiler. */
} regexp;
#define ROPT_ANCH (ROPT_ANCH_BOL|ROPT_ANCH_MBOL|ROPT_ANCH_GPOS|ROPT_ANCH_SBOL)
#define ROPT_ANCH_SINGLE (ROPT_ANCH_SBOL|ROPT_ANCH_GPOS)
#define ROPT_ANCH_BOL 0x00000001
#define ROPT_ANCH_MBOL 0x00000002
#define ROPT_ANCH_SBOL 0x00000004
#define ROPT_ANCH_GPOS 0x00000008
#define ROPT_SKIP 0x00000010
#define ROPT_IMPLICIT 0x00000020 /* Converted .* to ^.* */
#define ROPT_NOSCAN 0x00000040 /* Check-string always at start. */
#define ROPT_GPOS_SEEN 0x00000080
#define ROPT_CHECK_ALL 0x00000100
#define ROPT_LOOKBEHIND_SEEN 0x00000200
#define ROPT_EVAL_SEEN 0x00000400
#define ROPT_CANY_SEEN 0x00000800
#define ROPT_SANY_SEEN ROPT_CANY_SEEN /* src bckwrd cmpt */
/* used for high speed searches */
/* 0xf800 of reganch is used by PMf_COMPILETIME */
/* regexp_engine structure. This is the dispatch table for regexes.
* Any regex engine implementation must be able to build one of these.
*/
#define ROPT_UTF8 0x00010000
#define ROPT_NAUGHTY 0x00020000 /* how exponential is this pattern? */
#define ROPT_COPY_DONE 0x00040000 /* subbeg is a copy of the string */
#define ROPT_TAINTED_SEEN 0x00080000
#define ROPT_MATCH_UTF8 0x10000000 /* subbeg is utf-8 */
#define RE_USE_INTUIT_NOML 0x00100000 /* Best to intuit before matching */
#define RE_USE_INTUIT_ML 0x00200000
#define REINT_AUTORITATIVE_NOML 0x00400000 /* Can trust a positive answer */
#define REINT_AUTORITATIVE_ML 0x00800000
#define REINT_ONCE_NOML 0x01000000 /* Intuit can succed once only. */
#define REINT_ONCE_ML 0x02000000
#define RE_INTUIT_ONECHAR 0x04000000
#define RE_INTUIT_TAIL 0x08000000
#define RE_USE_INTUIT (RE_USE_INTUIT_NOML|RE_USE_INTUIT_ML)
#define REINT_AUTORITATIVE (REINT_AUTORITATIVE_NOML|REINT_AUTORITATIVE_ML)
#define REINT_ONCE (REINT_ONCE_NOML|REINT_ONCE_ML)
#define RX_MATCH_TAINTED(prog) ((prog)->reganch & ROPT_TAINTED_SEEN)
#define RX_MATCH_TAINTED_on(prog) ((prog)->reganch |= ROPT_TAINTED_SEEN)
#define RX_MATCH_TAINTED_off(prog) ((prog)->reganch &= ~ROPT_TAINTED_SEEN)
#define RX_MATCH_TAINTED_set(prog, t) ((t) \
? RX_MATCH_TAINTED_on(prog) \
: RX_MATCH_TAINTED_off(prog))
#define RX_MATCH_COPIED(prog) ((prog)->reganch & ROPT_COPY_DONE)
#define RX_MATCH_COPIED_on(prog) ((prog)->reganch |= ROPT_COPY_DONE)
#define RX_MATCH_COPIED_off(prog) ((prog)->reganch &= ~ROPT_COPY_DONE)
#define RX_MATCH_COPIED_set(prog,t) ((t) \
? RX_MATCH_COPIED_on(prog) \
: RX_MATCH_COPIED_off(prog))
#endif /* PLUGGABLE_RE_EXTENSION */
/* Stuff that needs to be included in the plugable extension goes below here */
#define RE_DEBUG_BIT 0x20000000
#define RX_DEBUG(prog) ((prog)->reganch & RE_DEBUG_BIT)
#define RX_DEBUG_on(prog) ((prog)->reganch |= RE_DEBUG_BIT)
#define RX_MATCH_UTF8(prog) ((prog)->reganch & ROPT_MATCH_UTF8)
#define RX_MATCH_UTF8_on(prog) ((prog)->reganch |= ROPT_MATCH_UTF8)
#define RX_MATCH_UTF8_off(prog) ((prog)->reganch &= ~ROPT_MATCH_UTF8)
#define RX_MATCH_UTF8_set(prog, t) ((t) \
? (RX_MATCH_UTF8_on(prog), (PL_reg_match_utf8 = 1)) \
: (RX_MATCH_UTF8_off(prog), (PL_reg_match_utf8 = 0)))
#define REXEC_COPY_STR 0x01 /* Need to copy the string. */
#define REXEC_CHECKED 0x02 /* check_substr already checked. */
#define REXEC_SCREAM 0x04 /* use scream table. */
#define REXEC_IGNOREPOS 0x08 /* \G matches at start. */
#define REXEC_NOT_FIRST 0x10 /* This is another iteration of //g. */
#define REXEC_ML 0x20 /* $* was set. */
#define ReREFCNT_inc(re) ((void)(re && re->refcnt++), re)
#define ReREFCNT_dec(re) CALLREGFREE(aTHX_ re)
#define FBMcf_TAIL_DOLLAR 1
#define FBMcf_TAIL_DOLLARM 2
#define FBMcf_TAIL_Z 4
#define FBMcf_TAIL_z 8
#define FBMcf_TAIL (FBMcf_TAIL_DOLLAR|FBMcf_TAIL_DOLLARM|FBMcf_TAIL_Z|FBMcf_TAIL_z)
#define FBMrf_MULTILINE 1
struct re_scream_pos_data_s;
struct re_save_state {
U32 re_state_reg_flags; /* from regexec.c */
char *re_state_bostr;
char *re_state_reginput; /* String-input pointer. */
char *re_state_regbol; /* Beginning of input, for ^ check. */
char *re_state_regeol; /* End of input, for $ check. */
I32 *re_state_regstartp; /* Pointer to startp array. */
I32 *re_state_regendp; /* Ditto for endp. */
U32 *re_state_reglastparen; /* Similarly for lastparen. */
U32 *re_state_reglastcloseparen; /* Similarly for lastcloseparen. */
char *re_state_regtill; /* How far we are required to go. */
char **re_state_reg_start_tmp; /* from regexec.c */
U32 re_state_reg_start_tmpl; /* from regexec.c */
I32 re_state_reg_eval_set; /* from regexec.c */
I32 re_state_regnarrate; /* from regexec.c */
int re_state_regindent; /* from regexec.c */
struct re_cc_state *re_state_reg_call_cc; /* from regexec.c */
regexp *re_state_reg_re; /* from regexec.c */
char *re_state_reg_ganch; /* from regexec.c */
SV *re_state_reg_sv; /* from regexec.c */
bool re_state_reg_match_utf8; /* from regexec.c */
MAGIC *re_state_reg_magic; /* from regexec.c */
I32 re_state_reg_oldpos; /* from regexec.c */
PMOP *re_state_reg_oldcurpm; /* from regexec.c */
PMOP *re_state_reg_curpm; /* from regexec.c */
char *re_state_reg_oldsaved; /* old saved substr during match */
STRLEN re_state_reg_oldsavedlen; /* old length of saved substr during match */
I32 re_state_reg_maxiter; /* max wait until caching pos */
I32 re_state_reg_leftiter; /* wait until caching pos */
char *re_state_reg_poscache; /* cache of pos of WHILEM */
STRLEN re_state_reg_poscache_size; /* size of pos cache of WHILEM */
I32 re_state_regsize; /* from regexec.c */
char *re_state_reg_starttry; /* from regexec.c */
struct reg_data *re_state_regdata; /* from regexec.c renamed was data */
regnode *re_state_regprogram; /* from regexec.c */
struct curcur *re_state_regcc; /* from regexec.c */
char *re_state_regprecomp; /* uncompiled string. */
I32 re_state_regnpar; /* () count. */
};
#define SAVESTACK_ALLOC_FOR_RE_SAVE_STATE \
(1 + ((sizeof(struct re_save_state) - 1) / sizeof(*PL_savestack)))
/*
* Local variables:
* c-indentation-style: bsd
* c-basic-offset: 4
* indent-tabs-mode: t
* End:
*
* ex: set ts=8 sts=4 sw=4 noet:
*/