[perl5.git] / regexp.h

/*    regexp.h
 */

/*
 * Definitions etc. for regexp(3) routines.
 *
 * Caveat:  this is V8 regexp(3) [actually, a reimplementation thereof],
 * not the System V one.
 */


typedef struct regexp {
	char **startp;
	char **endp;
	SV *regstart;		/* Internal use only. */
	char *regstclass;
	SV *regmust;		/* Internal use only. */
	I32 regback;		/* Can regmust locate first try? */
	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? */
	char reganch;		/* Internal use only. */
	char do_folding;	/* do case-insensitive match? */
	char program[1];	/* Unwarranted chumminess with compiler. */
} regexp;

#define ROPT_ANCH 1
#define ROPT_SKIP 2
#define ROPT_IMPLICIT 4
Commit	Line	Data
a0d0e21e LW	1	/* regexp.h
	2	*/
	3
378cc40b LW	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
378cc40b	11
378cc40b	12	typedef struct regexp {
fe14fcc3 LW	13	char **startp;
fe14fcc3 LW	14	char **endp;
79072805	15	SV regstart; / Internal use only. */
378cc40b	16	char *regstclass;
79072805 LW	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 */
a0d0e21e LW	21	U32 nparens; /* number of parentheses */
a0d0e21e LW	22	U32 lastparen; /* last paren matched */
378cc40b LW	23	char precomp; / pre-compilation regular expression */
378cc40b LW	24	char subbase; / saved string so \digit works forever */
9ef589d8	25	char subbeg; / same, but not responsible for allocation */
00bf170e	26	char subend; / end of subbase */
a0d0e21e	27	U16 naughty; /* how exponential is this pattern? */
378cc40b LW	28	char reganch; /* Internal use only. */
378cc40b LW	29	char do_folding; /* do case-insensitive match? */
378cc40b LW	30	char program[1]; /* Unwarranted chumminess with compiler. */
	31	} regexp;
	32
9ef589d8 LW	33	#define ROPT_ANCH 1
9ef589d8 LW	34	#define ROPT_SKIP 2
55204971	35	#define ROPT_IMPLICIT 4