109 lines
3.7 KiB
C
109 lines
3.7 KiB
C
/* regexp.h
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*/
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/*
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* Definitions etc. for regexp(3) routines.
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*
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* Caveat: this is V8 regexp(3) [actually, a reimplementation thereof],
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* not the System V one.
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*/
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struct regnode {
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U8 flags;
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U8 type;
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U16 next_off;
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};
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typedef struct regnode regnode;
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struct reg_substr_data;
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typedef struct regexp {
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I32 *startp;
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I32 *endp;
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regnode *regstclass;
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struct reg_substr_data *substrs;
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char *precomp; /* pre-compilation regular expression */
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struct reg_data *data; /* Additional data. */
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char *subbeg; /* saved or original string
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so \digit works forever. */
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I32 sublen; /* Length of string pointed by subbeg */
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I32 refcnt;
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I32 minlen; /* mininum possible length of $& */
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I32 prelen; /* length of precomp */
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U32 nparens; /* number of parentheses */
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U32 lastparen; /* last paren matched */
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U32 reganch; /* Internal use only +
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Tainted information used by regexec? */
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regnode program[1]; /* Unwarranted chumminess with compiler. */
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} regexp;
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#define ROPT_ANCH (ROPT_ANCH_BOL|ROPT_ANCH_MBOL|ROPT_ANCH_GPOS|ROPT_ANCH_SBOL)
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#define ROPT_ANCH_SINGLE (ROPT_ANCH_SBOL|ROPT_ANCH_GPOS)
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#define ROPT_ANCH_BOL 0x00001
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#define ROPT_ANCH_MBOL 0x00002
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#define ROPT_ANCH_SBOL 0x00004
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#define ROPT_ANCH_GPOS 0x00008
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#define ROPT_SKIP 0x00010
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#define ROPT_IMPLICIT 0x00020 /* Converted .* to ^.* */
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#define ROPT_NOSCAN 0x00040 /* Check-string always at start. */
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#define ROPT_GPOS_SEEN 0x00080
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#define ROPT_CHECK_ALL 0x00100
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#define ROPT_LOOKBEHIND_SEEN 0x00200
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#define ROPT_EVAL_SEEN 0x00400
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/* 0xf800 of reganch is used by PMf_COMPILETIME */
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#define ROPT_UTF8 0x10000
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#define ROPT_NAUGHTY 0x20000 /* how exponential is this pattern? */
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#define ROPT_COPY_DONE 0x40000 /* subbeg is a copy of the string */
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#define ROPT_TAINTED_SEEN 0x80000
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#define RE_USE_INTUIT_NOML 0x0100000 /* Best to intuit before matching */
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#define RE_USE_INTUIT_ML 0x0200000
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#define REINT_AUTORITATIVE_NOML 0x0400000 /* Can trust a positive answer */
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#define REINT_AUTORITATIVE_ML 0x0800000
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#define REINT_ONCE_NOML 0x1000000 /* Intuit can succed once only. */
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#define REINT_ONCE_ML 0x2000000
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#define RE_INTUIT_ONECHAR 0x4000000
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#define RE_INTUIT_TAIL 0x8000000
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#define RE_USE_INTUIT (RE_USE_INTUIT_NOML|RE_USE_INTUIT_ML)
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#define REINT_AUTORITATIVE (REINT_AUTORITATIVE_NOML|REINT_AUTORITATIVE_ML)
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#define REINT_ONCE (REINT_ONCE_NOML|REINT_ONCE_ML)
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#define RX_MATCH_TAINTED(prog) ((prog)->reganch & ROPT_TAINTED_SEEN)
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#define RX_MATCH_TAINTED_on(prog) ((prog)->reganch |= ROPT_TAINTED_SEEN)
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#define RX_MATCH_TAINTED_off(prog) ((prog)->reganch &= ~ROPT_TAINTED_SEEN)
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#define RX_MATCH_TAINTED_set(prog, t) ((t) \
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? RX_MATCH_TAINTED_on(prog) \
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: RX_MATCH_TAINTED_off(prog))
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#define RX_MATCH_COPIED(prog) ((prog)->reganch & ROPT_COPY_DONE)
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#define RX_MATCH_COPIED_on(prog) ((prog)->reganch |= ROPT_COPY_DONE)
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#define RX_MATCH_COPIED_off(prog) ((prog)->reganch &= ~ROPT_COPY_DONE)
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#define RX_MATCH_COPIED_set(prog,t) ((t) \
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? RX_MATCH_COPIED_on(prog) \
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: RX_MATCH_COPIED_off(prog))
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#define REXEC_COPY_STR 0x01 /* Need to copy the string. */
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#define REXEC_CHECKED 0x02 /* check_substr already checked. */
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#define REXEC_SCREAM 0x04 /* use scream table. */
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#define REXEC_IGNOREPOS 0x08 /* \G matches at start. */
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#define REXEC_NOT_FIRST 0x10 /* This is another iteration of //g. */
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#define REXEC_ML 0x20 /* $* was set. */
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#define ReREFCNT_inc(re) ((void)(re && re->refcnt++), re)
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#define ReREFCNT_dec(re) CALLREGFREE(aTHX_ re)
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#define FBMcf_TAIL_DOLLAR 1
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#define FBMcf_TAIL_DOLLARM 2
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#define FBMcf_TAIL_Z 4
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#define FBMcf_TAIL_z 8
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#define FBMcf_TAIL (FBMcf_TAIL_DOLLAR|FBMcf_TAIL_DOLLARM|FBMcf_TAIL_Z|FBMcf_TAIL_z)
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#define FBMrf_MULTILINE 1
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struct re_scream_pos_data_s;
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