mirror of
https://github.com/0intro/wmii
synced 2024-11-22 05:42:05 +03:00
72 lines
1.9 KiB
C
72 lines
1.9 KiB
C
/*
|
|
* substitution list
|
|
*/
|
|
|
|
#define NSUBEXP 32
|
|
typedef struct Resublist Resublist;
|
|
struct Resublist
|
|
{
|
|
Resub m[NSUBEXP];
|
|
};
|
|
|
|
/* max character classes per program */
|
|
extern Reprog RePrOg;
|
|
#define NCLASS (sizeof(RePrOg.class)/sizeof(Reclass))
|
|
|
|
/* max rune ranges per character class */
|
|
#define NCCRUNE (sizeof(Reclass)/sizeof(Rune))
|
|
|
|
/*
|
|
* 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 LISTSIZE 10
|
|
#define BIGLISTSIZE (10*LISTSIZE)
|
|
typedef struct Relist Relist;
|
|
struct Relist
|
|
{
|
|
Reinst* inst; /* Reinstruction of the thread */
|
|
Resublist se; /* matched subexpressions in this thread */
|
|
};
|
|
typedef struct Reljunk Reljunk;
|
|
struct Reljunk
|
|
{
|
|
Relist* relist[2];
|
|
Relist* reliste[2];
|
|
int starttype;
|
|
Rune startchar;
|
|
char* starts;
|
|
char* eol;
|
|
Rune* rstarts;
|
|
Rune* reol;
|
|
};
|
|
|
|
extern Relist* _renewthread(Relist*, Reinst*, int, Resublist*);
|
|
extern void _renewmatch(Resub*, int, Resublist*);
|
|
extern Relist* _renewemptythread(Relist*, Reinst*, int, char*);
|
|
extern Relist* _rrenewemptythread(Relist*, Reinst*, int, Rune*);
|