1 /* regexp.h 2 */ 3 4 /* 5 * Definitions etc. for regexp(3) routines. 6 * 7 * Caveat: this is V8 regexp(3) [actually, a reimplementation thereof], 8 * not the System V one. 9 */ 10 11 12 typedef struct regexp { 13 char **startp; 14 char **endp; 15 SV *regstart; /* Internal use only. */ 16 char *regstclass; 17 SV *regmust; /* Internal use only. */ 18 I32 regback; /* Can regmust locate first try? */ 19 I32 minlen; /* mininum possible length of $& */ 20 I32 prelen; /* length of precomp */ 21 U32 nparens; /* number of parentheses */ 22 U32 lastparen; /* last paren matched */ 23 char *precomp; /* pre-compilation regular expression */ 24 char *subbase; /* saved string so \digit works forever */ 25 char *subbeg; /* same, but not responsible for allocation */ 26 char *subend; /* end of subbase */ 27 U16 naughty; /* how exponential is this pattern? */ 28 char reganch; /* Internal use only. */ 29 char exec_tainted; /* Tainted information used by regexec? */ 30 char program[1]; /* Unwarranted chumminess with compiler. */ 31 } regexp; 32 33 #define ROPT_ANCH 3 34 #define ROPT_ANCH_BOL 1 35 #define ROPT_ANCH_GPOS 2 36 #define ROPT_SKIP 4 37 #define ROPT_IMPLICIT 8 38