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- /* regexp.h
- */
-
- /*
- * 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_data {
- U32 count;
- U8 *what;
- void* data[1];
- };
-
- struct reg_substr_datum {
- I32 min_offset;
- I32 max_offset;
- SV *substr;
- };
-
- struct reg_substr_data {
- struct reg_substr_datum data[3]; /* Actual array */
- };
-
- typedef struct regexp {
- I32 refcnt;
- char **startp;
- char **endp;
- regnode *regstclass;
- I32 minlen; /* mininum possible length of $& */
- I32 prelen; /* length of precomp */
- U32 nparens; /* number of parentheses */
- U32 lastparen; /* last paren matched */
- char *precomp; /* pre-compilation regular expression */
- char *subbase; /* saved string so \digit works forever */
- char *subbeg; /* same, but not responsible for allocation */
- char *subend; /* end of subbase */
- U16 naughty; /* how exponential is this pattern? */
- U16 reganch; /* Internal use only +
- Tainted information used by regexec? */
- #if 0
- SV *anchored_substr; /* Substring at fixed position wrt start. */
- I32 anchored_offset; /* Position of it. */
- SV *float_substr; /* Substring at variable position wrt start. */
- I32 float_min_offset; /* Minimal position of it. */
- I32 float_max_offset; /* Maximal position of it. */
- SV *check_substr; /* Substring to check before matching. */
- I32 check_offset_min; /* Offset of the above. */
- I32 check_offset_max; /* Offset of the above. */
- #else
- struct reg_substr_data *substrs;
- #endif
- struct reg_data *data; /* Additional data. */
- regnode program[1]; /* Unwarranted chumminess with compiler. */
- } regexp;
-
- #define anchored_substr substrs->data[0].substr
- #define anchored_offset substrs->data[0].min_offset
- #define float_substr substrs->data[1].substr
- #define float_min_offset substrs->data[1].min_offset
- #define float_max_offset substrs->data[1].max_offset
- #define check_substr substrs->data[2].substr
- #define check_offset_min substrs->data[2].min_offset
- #define check_offset_max substrs->data[2].max_offset
-
- #define ROPT_ANCH (ROPT_ANCH_BOL|ROPT_ANCH_MBOL|ROPT_ANCH_GPOS)
- #define ROPT_ANCH_SINGLE (ROPT_ANCH_BOL|ROPT_ANCH_GPOS)
- #define ROPT_ANCH_BOL 1
- #define ROPT_ANCH_MBOL 2
- #define ROPT_ANCH_GPOS 4
- #define ROPT_SKIP 8
- #define ROPT_IMPLICIT 0x10 /* Converted .* to ^.* */
- #define ROPT_NOSCAN 0x20 /* Check-string always at start. */
- #define ROPT_GPOS_SEEN 0x40
- #define ROPT_CHECK_ALL 0x80
- #define ROPT_LOOKBEHIND_SEEN 0x100
- #define ROPT_EVAL_SEEN 0x200
- #define ROPT_TAINTED_SEEN 0x400
- /* 0xf800 of reganch is used by PMf_COMPILETIME */
-
- #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 REXEC_COPY_STR 1 /* Need to copy the string. */
- #define REXEC_CHECKED 2 /* check_substr already checked. */
-
- #define ReREFCNT_inc(re) ((re && re->refcnt++), re)
- #define ReREFCNT_dec(re) pregfree(re)
-