ref: 985b2457cda207c2c65edeb647aedbb6e92dac46
dir: /sys/src/ape/lib/regexp/regcomp.h/
/*
* substitution list
*/
typedef struct Resublist Resublist;
struct Resublist
{
Resub m[32];
};
/* max subexpressions per program */
Resublist ReSuBlIsT;
#define NSUBEXP (sizeof(ReSuBlIsT.m)/sizeof(Resub))
/* max character classes per program */
Reprog RePrOg;
#define NCLASS (sizeof(RePrOg.class)/sizeof(Reclass))
/* max rune ranges per character class */
#define NCCRUNE (sizeof(Reclass)/sizeof(wchar_t))
/*
* Actions and Tokens (Reinst types)
*
* 02xx are operators, value == precedence
* 03xx are tokens, i.e. operands for operators
*/
#define RUNE 0177
#define OPERATOR 0200 /* Bitmask of all operators */
#define START 0200 /* Start, used for marker on stack */
#define RBRA 0201 /* Right bracket, ) */
#define LBRA 0202 /* Left bracket, ( */
#define OR 0203 /* Alternation, | */
#define CAT 0204 /* Concatentation, implicit operator */
#define STAR 0205 /* Closure, * */
#define PLUS 0206 /* a+ == aa* */
#define QUEST 0207 /* a? == a|nothing, i.e. 0 or 1 a's */
#define ANY 0300 /* Any character except newline, . */
#define ANYNL 0301 /* Any character including newline, . */
#define NOP 0302 /* No operation, internal use only */
#define BOL 0303 /* Beginning of line, ^ */
#define EOL 0304 /* End of line, $ */
#define CCLASS 0305 /* Character class, [] */
#define NCCLASS 0306 /* Negated character class, [] */
#define END 0377 /* Terminate: match found */
/*
* regexec execution lists
*/
#define LISTINCREMENT 8
typedef struct Relist Relist;
struct Relist
{
Reinst *inst; /* Reinstruction of the thread */
Resublist se; /* matched subexpressions in this thread */
};
extern Relist* _relist[2];
extern Relist* _reliste[2];
extern int _relistsize;
extern Relist* _renewthread(Relist*, Reinst*, Resublist*);
extern void _renewmatch(Resub*, int, Resublist*);