pedroediaz/lexvm
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

readme: add neatvi ref, pike: misc style fixes

Browse Source
This commit is contained in:
Kyryl Melekhin
2021-08-14 13:43:32 +00:00
parent 81f0ff252d
commit 158a03c4be
2 changed files with 16 additions and 13 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
README
View File

@@ -43,6 +43,9 @@ or class is a space we want to match not assert at. But the code for it was too
dirty and I scrapped it. Syntax for word assertions are like posix C library, not
the pcre "\b" which can be used both in front or back of the word, because there is
no distinction, it makes the implementation potentially even uglier.
* Assert flags like REG_ICASE,REG_NOTEOL,REG_NOTBOL and lookahead inside
negated bracket are implemented here (also shows use case in real world project):
https://github.com/kyx0r/neatvi/blob/pikevm/regex.c
NOTES
=====

26
pike.c
View File

@@ -472,7 +472,7 @@ goto next##nn; \
pc += 2 + pc[1]; \
goto rec##nn; \
case SPLIT: \
if(plist[pc - insts] == gen) \
if (plist[pc - insts] == gen) \
deccheck(nn) \
plist[pc - insts] = gen; \
sub->ref++; \
@@ -480,7 +480,7 @@ goto next##nn; \
pcs[i] = pc + pc[-1]; \
fastrec(nn, list, listidx) \
case RSPLIT: \
if(plist[pc - insts] == gen) \
if (plist[pc - insts] == gen) \
deccheck(nn) \
plist[pc - insts] = gen; \
sub->ref++; \
@@ -490,10 +490,10 @@ goto next##nn; \
fastrec(nn, list, listidx) \
case SAVE: \
if (sub->ref > 1) { \
sub->ref--; \
newsub() \
for (j = 0; j < nsubp; j++) \
s1->sub[j] = sub->sub[j]; \
sub->ref--; \
sub = s1; \
sub->ref = 1; \
} \
@@ -537,15 +537,15 @@ int re_pikevm(rcode *prog, const char *s, const char **subp, int nsubp)
rthread *clist = _clist, *nlist = _nlist, *tmp;
gen = prog->gen;
goto jmp_start;
for(;; sp = _sp) {
for (;; sp = _sp) {
gen++; uc_len(i, sp) uc_code(c, sp)
_sp = sp+i;
for(i = 0; i < clistidx; i++) {
for (i = 0; i < clistidx; i++) {
npc = clist[i].pc;
nsub = clist[i].sub;
switch(*npc++) {
case CHAR:
if(c != *npc++)
if (c != *npc++)
break;
case ANY:
addthread:
@@ -584,8 +584,8 @@ int re_pikevm(rcode *prog, const char *s, const char **subp, int nsubp)
} else if (!clistidx)
break;
}
if(matched) {
for(i = 0; i < nsubp; i++)
if (matched) {
for (i = 0; i < nsubp; i++)
subp[i] = matched->sub[i];
_return(1)
}
@@ -620,17 +620,17 @@ int main(int argc, char *argv[])
printf("Done in %f seconds\n", elapsed_time);
if (!sz)
{ printf("-nomatch-\n"); continue; }
for(int k=sub_els; k>0; k--)
if(sub[k-1])
for (int k=sub_els; k>0; k--)
if (sub[k-1])
break;
for(int l=0; l<sub_els; l+=2) {
for (int l=0; l<sub_els; l+=2) {
printf("(");
if(sub[l] == NULL)
if (sub[l] == NULL)
printf("?");
else
printf("%d", (int)(sub[l] - argv[i]));
printf(",");
if(sub[l+1] == NULL)
if (sub[l+1] == NULL)
printf("?");
else
printf("%d", (int)(sub[l+1] - argv[i]));