/* regexp.h * * Copyright (C) 1993, 1994, 1996, 1997, 1999, 2000, 2001, 2003, * 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. */ struct regnode { U8 flags; U8 type; U16 next_off; }; typedef struct regnode regnode; struct reg_substr_data; struct reg_data; 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 0x00001 #define ROPT_ANCH_MBOL 0x00002 #define ROPT_ANCH_SBOL 0x00004 #define ROPT_ANCH_GPOS 0x00008 #define ROPT_SKIP 0x00010 #define ROPT_IMPLICIT 0x00020 /* Converted .* to ^.* */ #define ROPT_NOSCAN 0x00040 /* Check-string always at start. */ #define ROPT_GPOS_SEEN 0x00080 #define ROPT_CHECK_ALL 0x00100 #define ROPT_LOOKBEHIND_SEEN 0x00200 #define ROPT_EVAL_SEEN 0x00400 #define ROPT_CANY_SEEN 0x00800 #define ROPT_SANY_SEEN ROPT_CANY_SEEN /* src bckwrd cmpt */ /* 0xf800 of reganch is used by PMf_COMPILETIME */ #define ROPT_UTF8 0x10000 #define ROPT_NAUGHTY 0x20000 /* how exponential is this pattern? */ #define ROPT_COPY_DONE 0x40000 /* subbeg is a copy of the string */ #define ROPT_TAINTED_SEEN 0x80000 #define ROPT_MATCH_UTF8 0x10000000 /* subbeg is utf-8 */ #define RE_USE_INTUIT_NOML 0x0100000 /* Best to intuit before matching */ #define RE_USE_INTUIT_ML 0x0200000 #define REINT_AUTORITATIVE_NOML 0x0400000 /* Can trust a positive answer */ #define REINT_AUTORITATIVE_ML 0x0800000 #define REINT_ONCE_NOML 0x1000000 /* Intuit can succed once only. */ #define REINT_ONCE_ML 0x2000000 #define RE_INTUIT_ONECHAR 0x4000000 #define RE_INTUIT_TAIL 0x8000000 #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)) #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: */