| rsc | b2cfc4e | 2003-09-30 17:47:41 +0000 | [diff] [blame] | 1 | #include "lib9.h" |
| 2 | #include "regexp9.h" |
| 3 | #include "regcomp.h" |
| 4 | |
| 5 | |
| 6 | /* |
| 7 | * save a new match in mp |
| 8 | */ |
| 9 | extern void |
| 10 | _renewmatch(Resub *mp, int ms, Resublist *sp) |
| 11 | { |
| 12 | int i; |
| 13 | |
| 14 | if(mp==0 || ms<=0) |
| 15 | return; |
| 16 | if(mp[0].s.sp==0 || sp->m[0].s.sp<mp[0].s.sp || |
| 17 | (sp->m[0].s.sp==mp[0].s.sp && sp->m[0].e.ep>mp[0].e.ep)){ |
| 18 | for(i=0; i<ms && i<NSUBEXP; i++) |
| 19 | mp[i] = sp->m[i]; |
| 20 | for(; i<ms; i++) |
| 21 | mp[i].s.sp = mp[i].e.ep = 0; |
| 22 | } |
| 23 | } |
| 24 | |
| 25 | /* |
| 26 | * Note optimization in _renewthread: |
| 27 | * *lp must be pending when _renewthread called; if *l has been looked |
| 28 | * at already, the optimization is a bug. |
| 29 | */ |
| 30 | extern Relist* |
| 31 | _renewthread(Relist *lp, /* _relist to add to */ |
| 32 | Reinst *ip, /* instruction to add */ |
| rsc | 6239009 | 2004-03-05 05:13:56 +0000 | [diff] [blame] | 33 | int ms, |
| rsc | b2cfc4e | 2003-09-30 17:47:41 +0000 | [diff] [blame] | 34 | Resublist *sep) /* pointers to subexpressions */ |
| 35 | { |
| 36 | Relist *p; |
| 37 | |
| 38 | for(p=lp; p->inst; p++){ |
| 39 | if(p->inst == ip){ |
| rsc | 6239009 | 2004-03-05 05:13:56 +0000 | [diff] [blame] | 40 | if(sep->m[0].s.sp < p->se.m[0].s.sp){ |
| 41 | if(ms > 1) |
| 42 | p->se = *sep; |
| 43 | else |
| 44 | p->se.m[0] = sep->m[0]; |
| 45 | } |
| rsc | b2cfc4e | 2003-09-30 17:47:41 +0000 | [diff] [blame] | 46 | return 0; |
| 47 | } |
| 48 | } |
| 49 | p->inst = ip; |
| rsc | 6239009 | 2004-03-05 05:13:56 +0000 | [diff] [blame] | 50 | if(ms > 1) |
| 51 | p->se = *sep; |
| 52 | else |
| 53 | p->se.m[0] = sep->m[0]; |
| rsc | b2cfc4e | 2003-09-30 17:47:41 +0000 | [diff] [blame] | 54 | (++p)->inst = 0; |
| 55 | return p; |
| 56 | } |
| 57 | |
| 58 | /* |
| 59 | * same as renewthread, but called with |
| 60 | * initial empty start pointer. |
| 61 | */ |
| 62 | extern Relist* |
| 63 | _renewemptythread(Relist *lp, /* _relist to add to */ |
| 64 | Reinst *ip, /* instruction to add */ |
| rsc | 6239009 | 2004-03-05 05:13:56 +0000 | [diff] [blame] | 65 | int ms, |
| rsc | b2cfc4e | 2003-09-30 17:47:41 +0000 | [diff] [blame] | 66 | char *sp) /* pointers to subexpressions */ |
| 67 | { |
| 68 | Relist *p; |
| 69 | |
| 70 | for(p=lp; p->inst; p++){ |
| 71 | if(p->inst == ip){ |
| 72 | if(sp < p->se.m[0].s.sp) { |
| rsc | 6239009 | 2004-03-05 05:13:56 +0000 | [diff] [blame] | 73 | if(ms > 1) |
| 74 | memset(&p->se, 0, sizeof(p->se)); |
| rsc | b2cfc4e | 2003-09-30 17:47:41 +0000 | [diff] [blame] | 75 | p->se.m[0].s.sp = sp; |
| 76 | } |
| 77 | return 0; |
| 78 | } |
| 79 | } |
| 80 | p->inst = ip; |
| rsc | 6239009 | 2004-03-05 05:13:56 +0000 | [diff] [blame] | 81 | if(ms > 1) |
| 82 | memset(&p->se, 0, sizeof(p->se)); |
| rsc | b2cfc4e | 2003-09-30 17:47:41 +0000 | [diff] [blame] | 83 | p->se.m[0].s.sp = sp; |
| 84 | (++p)->inst = 0; |
| 85 | return p; |
| 86 | } |
| 87 | |
| rsc | 6239009 | 2004-03-05 05:13:56 +0000 | [diff] [blame] | 88 | extern Relist* |
| 89 | _rrenewemptythread(Relist *lp, /* _relist to add to */ |
| 90 | Reinst *ip, /* instruction to add */ |
| 91 | int ms, |
| 92 | Rune *rsp) /* pointers to subexpressions */ |
| 93 | { |
| 94 | Relist *p; |
| 95 | |
| 96 | for(p=lp; p->inst; p++){ |
| 97 | if(p->inst == ip){ |
| 98 | if(rsp < p->se.m[0].s.rsp) { |
| 99 | if(ms > 1) |
| 100 | memset(&p->se, 0, sizeof(p->se)); |
| 101 | p->se.m[0].s.rsp = rsp; |
| 102 | } |
| 103 | return 0; |
| 104 | } |
| 105 | } |
| 106 | p->inst = ip; |
| 107 | if(ms > 1) |
| 108 | memset(&p->se, 0, sizeof(p->se)); |
| 109 | p->se.m[0].s.rsp = rsp; |
| 110 | (++p)->inst = 0; |
| 111 | return p; |
| 112 | } |
