1 /* 2 * substitution list 3 */ 4 #define NSUBEXP 32 5 typedef struct Resublist Resublist; 6 struct Resublist 7 { 8 Resub m[NSUBEXP]; 9 }; 10 11 /* 12 * Actions and Tokens (Reinst types) 13 * 14 * 02xx are operators, value == precedence 15 * 03xx are tokens, i.e. operands for operators 16 */ 17 #define RUNE 0177 18 #define OPERATOR 0200 /* Bitmask of all operators */ 19 #define START 0200 /* Start, used for marker on stack */ 20 #define RBRA 0201 /* Right bracket, ) */ 21 #define LBRA 0202 /* Left bracket, ( */ 22 #define OR 0203 /* Alternation, | */ 23 #define CAT 0204 /* Concatentation, implicit operator */ 24 #define STAR 0205 /* Closure, * */ 25 #define PLUS 0206 /* a+ == aa* */ 26 #define QUEST 0207 /* a? == a|nothing, i.e. 0 or 1 a's */ 27 #define ANY 0300 /* Any character except newline, . */ 28 #define ANYNL 0301 /* Any character including newline, . */ 29 #define NOP 0302 /* No operation, internal use only */ 30 #define BOL 0303 /* Beginning of line, ^ */ 31 #define EOL 0304 /* End of line, $ */ 32 #define CCLASS 0305 /* Character class, [] */ 33 #define NCCLASS 0306 /* Negated character class, [] */ 34 #define END 0377 /* Terminate: match found */ 35 36 /* 37 * regexec execution lists 38 */ 39 #define LISTSIZE 10 40 #define BIGLISTSIZE (25*LISTSIZE) 41 typedef struct Relist Relist; 42 struct Relist 43 { 44 Reinst* inst; /* Reinstruction of the thread */ 45 Resublist se; /* matched subexpressions in this thread */ 46 }; 47 typedef struct Reljunk Reljunk; 48 struct Reljunk 49 { 50 Relist* relist[2]; 51 Relist* reliste[2]; 52 int starttype; 53 Rune startchar; 54 char* starts; 55 char* eol; 56 Rune* rstarts; 57 Rune* reol; 58 }; 59 60 extern Relist* _renewthread(Relist*, Reinst*, int, Resublist*); 61 extern void _renewmatch(Resub*, int, Resublist*); 62 extern Relist* _renewemptythread(Relist*, Reinst*, int, char*); 63 extern Relist* _rrenewemptythread(Relist*, Reinst*, int, Rune*); 64