? (U8*)pos - off \
: NULL)
-#define HOP3(pos,off,lim) (PL_reg_match_utf8 ? reghop3((U8*)pos, off, (U8*)lim) : (U8*)(pos + off))
+#define HOP3(pos,off,lim) (PL_reg_match_utf8 ? reghop3((U8*)(pos), off, (U8*)(lim)) : (U8*)(pos + off))
#define HOP3c(pos,off,lim) ((char*)HOP3(pos,off,lim))
#define LOAD_UTF8_CHARCLASS(class,str) STMT_START { \
register SV *check;
char *strbeg;
char *t;
- const int do_utf8 = sv ? SvUTF8(sv) : 0; /* if no sv we have to assume bytes */
+ const bool do_utf8 = (sv && SvUTF8(sv)) ? 1 : 0; /* if no sv we have to assume bytes */
I32 ml_anch;
register char *other_last = NULL; /* other substr checked before this */
char *check_at = NULL; /* check substr found at this pos */
}
DEBUG_EXECUTE_r(
debug_start_match(prog, do_utf8, strpos, strend,
- "Guessing start of match for");
+ sv ? "Guessing start of match in sv for"
+ : "Guessing start of match in string for");
);
/* CHR_DIST() would be more correct here but it makes things slow. */
"String too short... [re_intuit_start]\n"));
goto fail;
}
+
strbeg = (sv && SvPOK(sv)) ? strend - SvCUR(sv) : strpos;
PL_regeol = strend;
if (do_utf8) {
to_byte_substr(prog);
check = prog->check_substr;
}
- if (check == &PL_sv_undef) {
+ if (check == &PL_sv_undef) {
DEBUG_EXECUTE_r(PerlIO_printf(Perl_debug_log,
- "Non-utf string cannot match utf check string\n"));
+ "Non-utf8 string cannot match utf8 check string\n"));
goto fail;
}
if (prog->reganch & ROPT_ANCH) { /* Match at beg-of-str or after \n */
I32 slen;
s = HOP3c(strpos, prog->check_offset_min, strend);
+
if (SvTAIL(check)) {
slen = SvCUR(check); /* >= 1 */
/* Match is anchored, but substr is not anchored wrt beg-of-str. */
s = strpos;
start_shift = prog->check_offset_min; /* okay to underestimate on CC */
- end_shift = prog->minlen - start_shift -
- CHR_SVLEN(check) + (SvTAIL(check) != 0);
+ end_shift = prog->check_end_shift;
+
if (!ml_anch) {
const I32 end = prog->check_offset_max + CHR_SVLEN(check)
- (SvTAIL(check) != 0);
else { /* Can match at random position */
ml_anch = 0;
s = strpos;
- start_shift = prog->check_offset_min; /* okay to underestimate on CC */
- /* Should be nonnegative! */
- end_shift = prog->minlen - start_shift -
- CHR_SVLEN(check) + (SvTAIL(check) != 0);
+ start_shift = prog->check_offset_min; /* okay to underestimate on CC */
+ end_shift = prog->check_end_shift;
+
+ /* end shift should be non negative here */
}
#ifdef DEBUGGING /* 7/99: reports of failure (with the older version) */
if (end_shift < 0)
- Perl_croak(aTHX_ "panic: end_shift");
+ Perl_croak(aTHX_ "panic: end_shift: %"IVdf" pattern:\n%s\n ",
+ end_shift,prog->precomp);
#endif
restart:
/* Find a possible match in the region s..strend by looking for
the "check" substring in the region corrected by start/end_shift. */
+
+ {
+ I32 srch_start_shift = start_shift;
+ I32 srch_end_shift = end_shift;
+ if (srch_start_shift < 0 && strbeg - s > srch_start_shift) {
+ srch_end_shift -= ((strbeg - s) - srch_start_shift);
+ srch_start_shift = strbeg - s;
+ }
+ DEBUG_OPTIMISE_r({
+ PerlIO_printf(Perl_debug_log, "Check offset min: %"IVdf" Start shift: %"IVdf" End shift %"IVdf" Real End Shift: %"IVdf"\n",
+ (IV)prog->check_offset_min,
+ (IV)srch_start_shift,
+ (IV)srch_end_shift,
+ (IV)prog->check_end_shift);
+ });
+
if (flags & REXEC_SCREAM) {
I32 p = -1; /* Internal iterator of scream. */
I32 * const pp = data ? data->scream_pos : &p;
&& (BmPREVIOUS(check) == SvCUR(check) - 1)
&& SvTAIL(check) ))
s = screaminstr(sv, check,
- start_shift + (s - strbeg), end_shift, pp, 0);
+ srch_start_shift + (s - strbeg), srch_end_shift, pp, 0);
else
goto fail_finish;
/* we may be pointing at the wrong string */
if (data)
*data->scream_olds = s;
}
- else if (prog->reganch & ROPT_CANY_SEEN)
- s = fbm_instr((U8*)(s + start_shift),
- (U8*)(strend - end_shift),
- check, multiline ? FBMrf_MULTILINE : 0);
- else
- s = fbm_instr(HOP3(s, start_shift, strend),
- HOP3(strend, -end_shift, strbeg),
+ else {
+ U8* start_point;
+ U8* end_point;
+ if (prog->reganch & ROPT_CANY_SEEN) {
+ start_point= (U8*)(s + srch_start_shift);
+ end_point= (U8*)(strend - srch_end_shift);
+ } else {
+ start_point= HOP3(s, srch_start_shift, srch_start_shift < 0 ? strbeg : strend);
+ end_point= HOP3(strend, -srch_end_shift, strbeg);
+ }
+ DEBUG_OPTIMISE_r({
+ PerlIO_printf(Perl_debug_log, "fbm_instr len=%d str=<%.*s>\n",
+ (int)(end_point - start_point),
+ (int)(end_point - start_point),
+ start_point);
+ });
+
+ s = fbm_instr( start_point, end_point,
check, multiline ? FBMrf_MULTILINE : 0);
-
+ }
+ }
/* Update the count-of-usability, remove useless subpatterns,
unshift s. */
if (!s)
goto fail_finish;
-
- check_at = s;
-
/* Finish the diagnostic message */
DEBUG_EXECUTE_r(PerlIO_printf(Perl_debug_log, "%ld...\n", (long)(s - i_strpos)) );
+ /* XXX dmq: first branch is for positive lookbehind...
+ Our check string is offset from the beginning of the pattern.
+ So we need to do any stclass tests offset forward from that
+ point. I think. :-(
+ */
+
+
+
+ check_at=s;
+
+
/* Got a candidate. Check MBOL anchoring, and the *other* substr.
Start with the other substr.
XXXX no SCREAM optimization yet - and a very coarse implementation
Probably it is right to do no SCREAM here...
*/
- if (do_utf8 ? (prog->float_utf8 && prog->anchored_utf8) : (prog->float_substr && prog->anchored_substr)) {
+ if (do_utf8 ? (prog->float_utf8 && prog->anchored_utf8)
+ : (prog->float_substr && prog->anchored_substr))
+ {
/* Take into account the "other" substring. */
/* XXXX May be hopelessly wrong for UTF... */
if (!other_last)
last2 = last1 = HOP3c(strend, -prog->minlen, strbeg);
if (last < last1)
last1 = last;
- /* XXXX It is not documented what units *_offsets are in. Assume bytes. */
+ /* XXXX It is not documented what units *_offsets are in.
+ We assume bytes, but this is clearly wrong.
+ Meaning this code needs to be carefully reviewed for errors.
+ dmq.
+ */
+
/* On end-of-str: see comment below. */
must = do_utf8 ? prog->anchored_utf8 : prog->anchored_substr;
if (must == &PL_sv_undef) {
s = (char*)NULL;
- DEBUG_EXECUTE_r(must = prog->anchored_utf8); /* for debug */
+ DEBUG_r(must = prog->anchored_utf8); /* for debug */
}
else
s = fbm_instr(
and end-of-str is not later than strend we are OK. */
if (must == &PL_sv_undef) {
s = (char*)NULL;
- DEBUG_EXECUTE_r(must = prog->float_utf8); /* for debug message */
+ DEBUG_r(must = prog->float_utf8); /* for debug message */
}
else
s = fbm_instr((unsigned char*)s,
}
}
- t = s - prog->check_offset_max;
+
+ t= (char*)HOP3( s, -prog->check_offset_max, (prog->check_offset_max<0) ? strend : strpos);
+
+ DEBUG_OPTIMISE_r(
+ PerlIO_printf(Perl_debug_log,
+ "Check offset min:%"IVdf" max:%"IVdf" S:%"IVdf" t:%"IVdf" D:%"IVdf" end:%"IVdf"\n",
+ (IV)prog->check_offset_min,
+ (IV)prog->check_offset_max,
+ (IV)(s-strpos),
+ (IV)(t-strpos),
+ (IV)(t-s),
+ (IV)(strend-strpos)
+ )
+ );
+
if (s - strpos > prog->check_offset_max /* signed-corrected t > strpos */
&& (!do_utf8
- || ((t = (char*)reghopmaybe3((U8*)s, -prog->check_offset_max, (U8*)strpos))
- && t > strpos))) {
+ || ((t = (char*)reghopmaybe3((U8*)s, -prog->check_offset_max, (U8*) ((prog->check_offset_max<0) ? strend : strpos)))
+ && t > strpos)))
+ {
/* Fixed substring is found far enough so that the match
cannot start at strpos. */
try_at_offset:
/* Last resort... */
/* XXXX BmUSEFUL already changed, maybe multiple change is meaningful... */
+ /* trie stclasses are too expensive to use here, we are better off to
+ leave it to regmatch itself */
if (prog->regstclass && PL_regkind[OP(prog->regstclass)]!=TRIE) {
/* minlen == 0 is possible if regstclass is \b or \B,
and the fixed substr is ''$.
const int cl_l = (PL_regkind[OP(prog->regstclass)] == EXACT
? CHR_DIST(str+STR_LEN(prog->regstclass), str)
: 1);
- const char * endpos = (prog->anchored_substr || prog->anchored_utf8 || ml_anch)
- ? HOP3c(s, (prog->minlen ? cl_l : 0), strend)
- : (prog->float_substr || prog->float_utf8
- ? HOP3c(HOP3c(check_at, -start_shift, strbeg),
- cl_l, strend)
- : strend);
- /*if (OP(prog->regstclass) == TRIE)
- endpos++;*/
+ char * endpos;
+ if (prog->anchored_substr || prog->anchored_utf8 || ml_anch)
+ endpos= HOP3c(s, (prog->minlen ? cl_l : 0), strend);
+ else if (prog->float_substr || prog->float_utf8)
+ endpos= HOP3c(HOP3c(check_at, -start_shift, strbeg), cl_l, strend);
+ else
+ endpos= strend;
+
+ DEBUG_EXECUTE_r(PerlIO_printf(Perl_debug_log, "start_shift: %"IVdf" check_at: %d s: %d endpos: %d\n",
+ start_shift,check_at-strbeg,s-strbeg,endpos-strbeg));
+
t = s;
s = find_byclass(prog, prog->regstclass, s, endpos, NULL);
if (!s) {
!isDIGIT_LC_utf8((U8*)s),
!isDIGIT_LC(*s)
);
- case TRIEC:
- case TRIE:
+ case AHOCORASICKC:
+ case AHOCORASICK:
{
const enum { trie_plain, trie_utf8, trie_utf8_fold }
trie_type = do_utf8 ?
SvPOK_on(sv_points);
sv_2mortal(sv_points);
points=(U8**)SvPV_nolen(sv_points );
- if ( trie_type != trie_utf8_fold && (trie->bitmap || OP(c)==TRIEC) ) {
+ if ( trie_type != trie_utf8_fold
+ && (trie->bitmap || OP(c)==AHOCORASICKC) )
+ {
if (trie->bitmap)
bitmap=(U8*)trie->bitmap;
else
int failed=0;
U32 word = aho->states[ state ].wordnum;
- if( state==1 && bitmap ) {
- DEBUG_TRIE_EXECUTE_r(
- if ( uc <= (U8*)last_start && !BITMAP_TEST(bitmap,*uc) ) {
- dump_exec_pos( (char *)uc, c, strend, real_start,
- (char*)uc, do_utf8 );
- PerlIO_printf( Perl_debug_log,
- " Scanning for legal start char...\n");
+ if( state==1 ) {
+ if ( bitmap ) {
+ DEBUG_TRIE_EXECUTE_r(
+ if ( uc <= (U8*)last_start && !BITMAP_TEST(bitmap,*uc) ) {
+ dump_exec_pos( (char *)uc, c, strend, real_start,
+ (char *)uc, do_utf8 );
+ PerlIO_printf( Perl_debug_log,
+ " Scanning for legal start char...\n");
+ }
+ );
+ while ( uc <= (U8*)last_start && !BITMAP_TEST(bitmap,*uc) ) {
+ uc++;
}
- );
- while ( uc <= (U8*)last_start && !BITMAP_TEST(bitmap,*uc) ) {
- uc++;
+ s= (char *)uc;
}
- s= (char *)uc;
if (uc >(U8*)last_start) break;
}
reginfo.prog = prog;
RX_MATCH_UTF8_set(prog, do_utf8);
+ DEBUG_EXECUTE_r(
+ debug_start_match(prog, do_utf8, startpos, strend,
+ "Matching");
+ );
minlen = prog->minlen;
- if (strend - startpos < minlen) {
+
+ if (strend - startpos < (minlen+(prog->check_offset_min<0?prog->check_offset_min:0))) {
DEBUG_EXECUTE_r(PerlIO_printf(Perl_debug_log,
"String too short [regexec_flags]...\n"));
goto phooey;
}
+
/* Check validity of program. */
if (UCHARAT(prog->program) != REG_MAGIC) {
Perl_croak(aTHX_ "corrupted regexp program");
}
}
- DEBUG_EXECUTE_r(
- debug_start_match(prog, do_utf8, startpos, strend,
- "Matching");
- );
+
/* Simplest case: anchored match need be tried only once. */
/* [unless only anchor is BOL and multiline is set] */
back_max = prog->float_max_offset;
back_min = prog->float_min_offset;
}
+
+
if (must == &PL_sv_undef)
/* could not downgrade utf8 check substring, so must fail */
goto phooey;
- last = HOP3c(strend, /* Cannot start after this */
- -(I32)(CHR_SVLEN(must)
- - (SvTAIL(must) != 0) + back_min), strbeg);
-
+ if (back_min<0) {
+ last = strend;
+ } else {
+ last = HOP3c(strend, /* Cannot start after this */
+ -(I32)(CHR_SVLEN(must)
+ - (SvTAIL(must) != 0) + back_min), strbeg);
+ }
if (s > PL_bostr)
last1 = HOPc(s, -1);
else
strend = HOPc(strend, -dontbother);
while ( (s <= last) &&
((flags & REXEC_SCREAM)
- ? (s = screaminstr(sv, must, HOP3c(s, back_min, strend) - strbeg,
+ ? (s = screaminstr(sv, must, HOP3c(s, back_min, (back_min<0 ? strbeg : strend)) - strbeg,
end_shift, &scream_pos, 0))
- : (s = fbm_instr((unsigned char*)HOP3(s, back_min, strend),
+ : (s = fbm_instr((unsigned char*)HOP3(s, back_min, (back_min<0 ? strbeg : strend)),
(unsigned char*)strend, must,
multiline ? FBMrf_MULTILINE : 0))) ) {
/* we may be pointing at the wrong string */
PL_colors[4], blurb, PL_colors[5], s0, s1);
if (do_utf8||utf8_pat)
- PerlIO_printf(Perl_debug_log, "UTF-8 %s...\n",
- !do_utf8 ? "pattern" : !utf8_pat ? "string" :
- "pattern and string"
+ PerlIO_printf(Perl_debug_log, "UTF-8 %s%s%s...\n",
+ utf8_pat ? "pattern" : "",
+ utf8_pat && do_utf8 ? " and " : "",
+ do_utf8 ? "string" : ""
);
}
}
const int is_uni = (do_utf8 && OP(scan) != CANY) ? 1 : 0;
RE_PV_COLOR_DECL(s0,len0,is_uni,PERL_DEBUG_PAD(0),
- (locinput - pref_len),pref0_len, pref0_len, 4, 5);
+ (locinput - pref_len),pref0_len, 60, 4, 5);
RE_PV_COLOR_DECL(s1,len1,is_uni,PERL_DEBUG_PAD(1),
(locinput - pref_len + pref0_len),
- pref_len - pref0_len, pref_len - pref0_len, 2, 3);
+ pref_len - pref0_len, 60, 2, 3);
RE_PV_COLOR_DECL(s2,len2,is_uni,PERL_DEBUG_PAD(2),
- locinput, loc_regeol - locinput, l, 0, 1);
+ locinput, loc_regeol - locinput, 10, 0, 1);
+ const STRLEN tlen=len0+len1+len2;
PerlIO_printf(Perl_debug_log,
"%4"IVdf" <%.*s%.*s%s%.*s>%*s|",
(IV)(locinput - loc_bostr),
len1, s1,
(docolor ? "" : "> <"),
len2, s2,
- 15 - l - pref_len + 1,
+ tlen > 19 ? 0 : 19 - tlen,
"");
}
}
DEBUG_EXECUTE_r( {
SV * const prop = sv_newmortal();
+ regnode *rnext=regnext(scan);
DUMP_EXEC_POS( locinput, scan, do_utf8 );
regprop(rex, prop, scan);
"%3"IVdf":%*s%s(%"IVdf")\n",
(IV)(scan - rex->program), PL_regindent*2, "",
SvPVX_const(prop),
- PL_regkind[OP(scan)] == END ? 0 : (IV)(regnext(scan) - rex->program));
+ (PL_regkind[OP(scan)] == END || !rnext) ?
+ 0 : (IV)(rnext - rex->program));
});
next = scan + NEXT_OFF(scan);
}
/* run the pattern returned from (??{...}) */
- DEBUG_EXECUTE_r(
- debug_start_match(re, do_utf8, locinput, PL_regeol,
- "Matching embedded");
- );
-
ST.cp = regcppush(0); /* Save *all* the positions. */
REGCP_SET(ST.lastcp);
*PL_reglastparen = 0;
rex = re;
ST.B = next;
+ DEBUG_EXECUTE_r(
+ debug_start_match(re, do_utf8, locinput, PL_regeol,
+ "Matching embedded");
+ );
/* now continue from first node in postoned RE */
PUSH_YES_STATE_GOTO(EVAL_A, re->program + 1);
/* NOTREACHED */
/* continue at the node following the (??{...}) */
scan = ST.B;
continue;
-
case EVAL_A_fail: /* unsuccessfully ran inner rex (??{rex}) */
/* Restore state to the outer re then re-throw the failure */
if (ST.toggleutf)
if (yes_state) {
/* we have successfully completed a subexpression, but we must now
* pop to the state marked by yes_state and continue from there */
-
assert(st != yes_state);
while (yes_state < SLAB_FIRST(PL_regmatch_slab)
|| yes_state > SLAB_LAST(PL_regmatch_slab))
PL_regmatch_state = st;
switch (st->resume_state) {
+ case EVAL_A:
case IFMATCH_A:
case CURLYM_A:
- case EVAL_A:
state_num = st->resume_state;
goto reenter_switch;
c = utf8n_to_uvchr(p, UTF8_MAXBYTES, &len,
(UTF8_ALLOW_DEFAULT & UTF8_ALLOW_ANYUV) | UTF8_CHECK_ONLY);
/* see [perl #37836] for UTF8_ALLOW_ANYUV */
- if (len == (STRLEN)-1) {
- int i;
- PerlIO_printf(Perl_debug_log, "utf8: ");
- for (i = 0; i < 4; i++)
- PerlIO_printf(Perl_debug_log, "\\x%02x", p[i]);
- PerlIO_printf(Perl_debug_log, "\n");
- Perl_warner(aTHX_ packWARN(WARN_REGEXP), "Malformed UTF-8 character");
- /* Perl_croak(aTHX_ "Malformed UTF-8 character (fatal)"); */
- }
+ if (len == (STRLEN)-1)
+ Perl_croak(aTHX_ "Malformed UTF-8 character (fatal)");
}
plen = lenp ? *lenp : UNISKIP(NATIVE_TO_UNI(c));
}
}
else {
- while (off++) {
- if (s > lim) {
- s--;
- if (UTF8_IS_CONTINUED(*s)) {
- while (s > (U8*)lim && UTF8_IS_CONTINUATION(*s))
- s--;
- }
- /* XXX could check well-formedness here */
+ while (off++ && s > lim) {
+ s--;
+ if (UTF8_IS_CONTINUED(*s)) {
+ while (s > lim && UTF8_IS_CONTINUATION(*s))
+ s--;
}
+ /* XXX could check well-formedness here */
}
}
return s;
}
STATIC U8 *
+S_reghop4(U8 *s, I32 off, const U8* llim, const U8* rlim)
+{
+ dVAR;
+ if (off >= 0) {
+ while (off-- && s < rlim) {
+ /* XXX could check well-formedness here */
+ s += UTF8SKIP(s);
+ }
+ }
+ else {
+ while (off++ && s > llim) {
+ s--;
+ if (UTF8_IS_CONTINUED(*s)) {
+ while (s > llim && UTF8_IS_CONTINUATION(*s))
+ s--;
+ }
+ /* XXX could check well-formedness here */
+ }
+ }
+ return s;
+}
+
+
+STATIC U8 *
S_reghopmaybe3(U8* s, I32 off, const U8* lim)
{
dVAR;
return NULL;
}
else {
- while (off++) {
- if (s > lim) {
- s--;
- if (UTF8_IS_CONTINUED(*s)) {
- while (s > (U8*)lim && UTF8_IS_CONTINUATION(*s))
- s--;
- }
- /* XXX could check well-formedness here */
+ while (off++ && s > lim) {
+ s--;
+ if (UTF8_IS_CONTINUED(*s)) {
+ while (s > lim && UTF8_IS_CONTINUATION(*s))
+ s--;
}
- else
- break;
+ /* XXX could check well-formedness here */
}
if (off <= 0)
return NULL;
projects / p5sagit/p5-mst-13.2.git / blobdiff