X-Git-Url: https://perl5.git.perl.org/perl5.git/blobdiff_plain/00bf170e31343ccc4fac7a63f6a3acf5e76c3616..c333cfe784a03678e3e071720a240ed3993ae09b:/regexp.h diff --git a/regexp.h b/regexp.h index 39620da..f5d2424 100644 --- a/regexp.h +++ b/regexp.h @@ -1,3 +1,13 @@ +/* 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. * @@ -5,35 +15,135 @@ * not the System V one. */ -/* $Header: regexp.h,v 3.0.1.1 90/08/09 05:12:55 lwall Locked $ - * - * $Log: regexp.h,v $ - * Revision 3.0.1.1 90/08/09 05:12:55 lwall - * patch19: $' broke on embedded nulls - * - * Revision 3.0 89/10/18 15:22:46 lwall - * 3.0 baseline - * - */ -#define NSUBEXP 10 +struct regnode { + U8 flags; + U8 type; + U16 next_off; +}; + +typedef struct regnode regnode; + +struct reg_substr_data; + +struct reg_data; typedef struct regexp { - char *startp[NSUBEXP]; - char *endp[NSUBEXP]; - STR *regstart; /* Internal use only. */ - char *regstclass; - STR *regmust; /* Internal use only. */ - int regback; /* Can regmust locate first try? */ + I32 *startp; + I32 *endp; + regnode *regstclass; + struct reg_substr_data *substrs; char *precomp; /* pre-compilation regular expression */ - char *subbase; /* saved string so \digit works forever */ - char *subend; /* end of subbase */ - char reganch; /* Internal use only. */ - char do_folding; /* do case-insensitive match? */ - char lastparen; /* last paren matched */ - char nparens; /* number of parentheses */ - char program[1]; /* Unwarranted chumminess with compiler. */ + struct reg_data *data; /* Additional data. */ + char *subbeg; /* saved or original string + so \digit works forever. */ +#ifdef PERL_COPY_ON_WRITE + SV *saved_copy; /* If non-NULL, SV which is COW from original */ +#endif + 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; -regexp *regcomp(); -int regexec(); +#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)) + +#ifdef PERL_COPY_ON_WRITE +#define RX_MATCH_COPY_FREE(rx) \ + STMT_START {if (rx->saved_copy) { \ + SV_CHECK_THINKFIRST_COW_DROP(rx->saved_copy); \ + } \ + if (RX_MATCH_COPIED(rx)) { \ + Safefree(rx->subbeg); \ + RX_MATCH_COPIED_off(rx); \ + }} STMT_END +#else +#define RX_MATCH_COPY_FREE(rx) \ + STMT_START {if (RX_MATCH_COPIED(rx)) { \ + Safefree(rx->subbeg); \ + RX_MATCH_COPIED_off(rx); \ + }} STMT_END +#endif + +#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;