* "One Ring to rule them all, One Ring to find them..."
*/
+/* This file contains functions for executing a regular expression. See
+ * also regcomp.c which funnily enough, contains functions for compiling
+ * a regular expression.
+ *
+ * This file is also copied at build time to ext/re/re_exec.c, where
+ * it's built with -DPERL_EXT_RE_BUILD -DPERL_EXT_RE_DEBUG -DPERL_EXT.
+ * This causes the main functions to be compiled under new names and with
+ * debugging support added, which makes "use re 'debug'" work.
+
+ */
+
/* NOTE: this is derived from Henry Spencer's regexp code, and should not
* confused with the original package (see point 3 below). Thanks, Henry!
*/
*
**** Alterations to Henry's code are...
****
- **** Copyright (c) 1991-2001, Larry Wall
+ **** Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
+ **** 2000, 2001, 2002, 2003, 2004, 2005, by Larry Wall and others
****
**** You may distribute under the terms of either the GNU General Public
**** License or the Artistic License, as specified in the README file.
#define RF_evaled 4 /* Did an EVAL with setting? */
#define RF_utf8 8 /* String contains multibyte chars? */
-#define UTF (PL_reg_flags & RF_utf8)
+#define UTF ((PL_reg_flags & RF_utf8) != 0)
#define RS_init 1 /* eval environment created */
#define RS_set 2 /* replsv value is set */
#define STATIC static
#endif
+#define REGINCLASS(p,c) (ANYOF_FLAGS(p) ? reginclass(p,c,0,0) : ANYOF_BITMAP_TEST(p,*(c)))
+
/*
* Forwards.
*/
-#define CHR_SVLEN(sv) (UTF ? sv_len_utf8(sv) : SvCUR(sv))
+#define CHR_SVLEN(sv) (do_utf8 ? sv_len_utf8(sv) : SvCUR(sv))
#define CHR_DIST(a,b) (PL_reg_match_utf8 ? utf8_distance(a,b) : a - b)
#define reghop_c(pos,off) ((char*)reghop((U8*)pos, off))
#define HOP3c(pos,off,lim) ((char*)HOP3(pos,off,lim))
#define HOPMAYBE3c(pos,off,lim) ((char*)HOPMAYBE3(pos,off,lim))
-#define LOAD_UTF8_CHARCLASS(a,b) STMT_START { if (!CAT2(PL_utf8_,a)) (void)CAT2(is_utf8_, a)((U8*)b); } STMT_END
+#define LOAD_UTF8_CHARCLASS(a,b) STMT_START { if (!CAT2(PL_utf8_,a)) { ENTER; save_re_context(); (void)CAT2(is_utf8_, a)((const U8*)b); LEAVE; } } STMT_END
/* for use after a quantifier and before an EXACT-like node -- japhy */
#define JUMPABLE(rn) ( \
PL_regkind[(U8)OP(rn)] == EXACT || PL_regkind[(U8)OP(rn)] == REF \
)
+/*
+ Search for mandatory following text node; for lookahead, the text must
+ follow but for lookbehind (rn->flags != 0) we skip to the next step.
+*/
#define FIND_NEXT_IMPT(rn) STMT_START { \
while (JUMPABLE(rn)) \
- if (OP(rn) == SUSPEND || OP(rn) == IFMATCH || \
- PL_regkind[(U8)OP(rn)] == CURLY) \
+ if (OP(rn) == SUSPEND || PL_regkind[(U8)OP(rn)] == CURLY) \
rn = NEXTOPER(NEXTOPER(rn)); \
else if (OP(rn) == PLUS) \
rn = NEXTOPER(rn); \
+ else if (OP(rn) == IFMATCH) \
+ rn = (rn->flags == 0) ? NEXTOPER(NEXTOPER(rn)) : rn + ARG(rn); \
else rn += NEXT_OFF(rn); \
} STMT_END
Perl_croak(aTHX_ "panic: paren_elems_to_push < 0");
#define REGCP_OTHER_ELEMS 6
- SSCHECK(paren_elems_to_push + REGCP_OTHER_ELEMS);
+ SSGROW(paren_elems_to_push + REGCP_OTHER_ELEMS);
for (p = PL_regsize; p > parenfloor; p--) {
/* REGCP_PARENS_ELEMS are pushed per pairs of parentheses. */
SSPUSHINT(PL_regendp[p]);
}
/* These are needed since we do not localize EVAL nodes: */
-# define REGCP_SET(cp) DEBUG_r(PerlIO_printf(Perl_debug_log, \
+# define REGCP_SET(cp) DEBUG_EXECUTE_r(PerlIO_printf(Perl_debug_log, \
" Setting an EVAL scope, savestack=%"IVdf"\n", \
(IV)PL_savestack_ix)); cp = PL_savestack_ix
-# define REGCP_UNWIND(cp) DEBUG_r(cp != PL_savestack_ix ? \
+# define REGCP_UNWIND(cp) DEBUG_EXECUTE_r(cp != PL_savestack_ix ? \
PerlIO_printf(Perl_debug_log, \
" Clearing an EVAL scope, savestack=%"IVdf"..%"IVdf"\n", \
(IV)(cp), (IV)PL_savestack_ix) : 0); regcpblow(cp)
char *input;
I32 tmps;
+ GET_RE_DEBUG_FLAGS_DECL;
+
/* Pop REGCP_OTHER_ELEMS before the parentheses loop starts. */
i = SSPOPINT;
assert(i == SAVEt_REGCONTEXT); /* Check that the magic cookie is there. */
tmps = SSPOPINT;
if (paren <= *PL_reglastparen)
PL_regendp[paren] = tmps;
- DEBUG_r(
+ DEBUG_EXECUTE_r(
PerlIO_printf(Perl_debug_log,
" restoring \\%"UVuf" to %"IVdf"(%"IVdf")..%"IVdf"%s\n",
(UV)paren, (IV)PL_regstartp[paren],
(paren > *PL_reglastparen ? "(no)" : ""));
);
}
- DEBUG_r(
- if (*PL_reglastparen + 1 <= PL_regnpar) {
+ DEBUG_EXECUTE_r(
+ if ((I32)(*PL_reglastparen + 1) <= PL_regnpar) {
PerlIO_printf(Perl_debug_log,
" restoring \\%"IVdf"..\\%"IVdf" to undef\n",
(IV)(*PL_reglastparen + 1), (IV)PL_regnpar);
* building DynaLoader will fail:
* "Error: '*' not in typemap in DynaLoader.xs, line 164"
* --jhi */
- for (paren = *PL_reglastparen + 1; paren <= PL_regnpar; paren++) {
- if (paren > PL_regsize)
+ for (paren = *PL_reglastparen + 1; (I32)paren <= PL_regnpar; paren++) {
+ if ((I32)paren > PL_regsize)
PL_regstartp[paren] = -1;
PL_regendp[paren] = -1;
}
register SV *check;
char *strbeg;
char *t;
+ int do_utf8 = sv ? SvUTF8(sv) : 0; /* if no sv we have to assume bytes */
I32 ml_anch;
register char *other_last = Nullch; /* other substr checked before this */
char *check_at = Nullch; /* check substr found at this pos */
+ I32 multiline = prog->reganch & PMf_MULTILINE;
#ifdef DEBUGGING
char *i_strpos = strpos;
SV *dsv = PERL_DEBUG_PAD_ZERO(0);
#endif
+ GET_RE_DEBUG_FLAGS_DECL;
+
+ RX_MATCH_UTF8_set(prog,do_utf8);
+
if (prog->reganch & ROPT_UTF8) {
- DEBUG_r(PerlIO_printf(Perl_debug_log,
+ DEBUG_EXECUTE_r(PerlIO_printf(Perl_debug_log,
"UTF-8 regex...\n"));
PL_reg_flags |= RF_utf8;
}
- DEBUG_r({
+ DEBUG_EXECUTE_r({
char *s = PL_reg_match_utf8 ?
sv_uni_display(dsv, sv, 60, UNI_DISPLAY_REGEX) :
strpos;
if (!PL_colorset)
reginitcolors();
if (PL_reg_match_utf8)
- DEBUG_r(PerlIO_printf(Perl_debug_log,
+ DEBUG_EXECUTE_r(PerlIO_printf(Perl_debug_log,
"UTF-8 target...\n"));
PerlIO_printf(Perl_debug_log,
"%sGuessing start of match, REx%s `%s%.60s%s%s' against `%s%.*s%s%s'...\n",
);
});
- if (prog->minlen > CHR_DIST((U8*)strend, (U8*)strpos)) {
- DEBUG_r(PerlIO_printf(Perl_debug_log,
+ /* CHR_DIST() would be more correct here but it makes things slow. */
+ if (prog->minlen > strend - strpos) {
+ DEBUG_EXECUTE_r(PerlIO_printf(Perl_debug_log,
"String too short... [re_intuit_start]\n"));
goto fail;
}
strbeg = (sv && SvPOK(sv)) ? strend - SvCUR(sv) : strpos;
PL_regeol = strend;
- check = prog->check_substr;
+ if (do_utf8) {
+ if (!prog->check_utf8 && prog->check_substr)
+ to_utf8_substr(prog);
+ check = prog->check_utf8;
+ } else {
+ if (!prog->check_substr && prog->check_utf8)
+ to_byte_substr(prog);
+ check = prog->check_substr;
+ }
+ if (check == &PL_sv_undef) {
+ DEBUG_EXECUTE_r(PerlIO_printf(Perl_debug_log,
+ "Non-utf string cannot match utf check string\n"));
+ goto fail;
+ }
if (prog->reganch & ROPT_ANCH) { /* Match at beg-of-str or after \n */
ml_anch = !( (prog->reganch & ROPT_ANCH_SINGLE)
|| ( (prog->reganch & ROPT_ANCH_BOL)
- && !PL_multiline ) ); /* Check after \n? */
+ && !multiline ) ); /* Check after \n? */
if (!ml_anch) {
if ( !(prog->reganch & (ROPT_ANCH_GPOS /* Checked by the caller */
/* SvCUR is not set on references: SvRV and SvPVX overlap */
&& sv && !SvROK(sv)
&& (strpos != strbeg)) {
- DEBUG_r(PerlIO_printf(Perl_debug_log, "Not at start...\n"));
+ DEBUG_EXECUTE_r(PerlIO_printf(Perl_debug_log, "Not at start...\n"));
goto fail;
}
if (prog->check_offset_min == prog->check_offset_max &&
if ( strend - s > slen || strend - s < slen - 1
|| (strend - s == slen && strend[-1] != '\n')) {
- DEBUG_r(PerlIO_printf(Perl_debug_log, "String too long...\n"));
+ DEBUG_EXECUTE_r(PerlIO_printf(Perl_debug_log, "String too long...\n"));
goto fail_finish;
}
/* Now should match s[0..slen-2] */
|| (slen > 1
&& memNE(SvPVX(check), s, slen)))) {
report_neq:
- DEBUG_r(PerlIO_printf(Perl_debug_log, "String not equal...\n"));
+ DEBUG_EXECUTE_r(PerlIO_printf(Perl_debug_log, "String not equal...\n"));
goto fail_finish;
}
}
start_shift + (s - strbeg), end_shift, pp, 0);
else
goto fail_finish;
+ /* we may be pointing at the wrong string */
+ if (s && RX_MATCH_COPIED(prog))
+ s = strbeg + (s - SvPVX(sv));
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, PL_multiline ? FBMrf_MULTILINE : 0);
+ check, multiline ? FBMrf_MULTILINE : 0);
else
s = fbm_instr(HOP3(s, start_shift, strend),
HOP3(strend, -end_shift, strbeg),
- check, PL_multiline ? FBMrf_MULTILINE : 0);
+ check, multiline ? FBMrf_MULTILINE : 0);
/* Update the count-of-usability, remove useless subpatterns,
unshift s. */
- DEBUG_r(PerlIO_printf(Perl_debug_log, "%s %s substr `%s%.*s%s'%s%s",
+ DEBUG_EXECUTE_r(PerlIO_printf(Perl_debug_log, "%s %s substr `%s%.*s%s'%s%s",
(s ? "Found" : "Did not find"),
- ((check == prog->anchored_substr) ? "anchored" : "floating"),
+ (check == (do_utf8 ? prog->anchored_utf8 : prog->anchored_substr) ? "anchored" : "floating"),
PL_colors[0],
(int)(SvCUR(check) - (SvTAIL(check)!=0)),
SvPVX(check),
check_at = s;
/* Finish the diagnostic message */
- DEBUG_r(PerlIO_printf(Perl_debug_log, "%ld...\n", (long)(s - i_strpos)) );
+ DEBUG_EXECUTE_r(PerlIO_printf(Perl_debug_log, "%ld...\n", (long)(s - i_strpos)) );
/* Got a candidate. Check MBOL anchoring, and the *other* substr.
Start with the other substr.
Probably it is right to do no SCREAM here...
*/
- if (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)
other_last = strpos;
- if (check == prog->float_substr) {
+ if (check == (do_utf8 ? prog->float_utf8 : prog->float_substr)) {
do_other_anchored:
{
char *last = HOP3c(s, -start_shift, strbeg), *last1, *last2;
char *s1 = s;
+ SV* must;
t = s - prog->check_offset_max;
if (s - strpos > prog->check_offset_max /* signed-corrected t > strpos */
- && (!(prog->reganch & ROPT_UTF8)
+ && (!do_utf8
|| ((t = reghopmaybe3_c(s, -(prog->check_offset_max), strpos))
&& t > strpos)))
/* EMPTY */;
last1 = last;
/* XXXX It is not documented what units *_offsets are in. Assume bytes. */
/* On end-of-str: see comment below. */
- s = fbm_instr((unsigned char*)t,
- HOP3(HOP3(last1, prog->anchored_offset, strend)
- + SvCUR(prog->anchored_substr),
- -(SvTAIL(prog->anchored_substr)!=0), strbeg),
- prog->anchored_substr,
- PL_multiline ? FBMrf_MULTILINE : 0);
- DEBUG_r(PerlIO_printf(Perl_debug_log,
+ 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 */
+ }
+ else
+ s = fbm_instr(
+ (unsigned char*)t,
+ HOP3(HOP3(last1, prog->anchored_offset, strend)
+ + SvCUR(must), -(SvTAIL(must)!=0), strbeg),
+ must,
+ multiline ? FBMrf_MULTILINE : 0
+ );
+ DEBUG_EXECUTE_r(PerlIO_printf(Perl_debug_log,
"%s anchored substr `%s%.*s%s'%s",
(s ? "Found" : "Contradicts"),
PL_colors[0],
- (int)(SvCUR(prog->anchored_substr)
- - (SvTAIL(prog->anchored_substr)!=0)),
- SvPVX(prog->anchored_substr),
- PL_colors[1], (SvTAIL(prog->anchored_substr) ? "$" : "")));
+ (int)(SvCUR(must)
+ - (SvTAIL(must)!=0)),
+ SvPVX(must),
+ PL_colors[1], (SvTAIL(must) ? "$" : "")));
if (!s) {
if (last1 >= last2) {
- DEBUG_r(PerlIO_printf(Perl_debug_log,
+ DEBUG_EXECUTE_r(PerlIO_printf(Perl_debug_log,
", giving up...\n"));
goto fail_finish;
}
- DEBUG_r(PerlIO_printf(Perl_debug_log,
+ DEBUG_EXECUTE_r(PerlIO_printf(Perl_debug_log,
", trying floating at offset %ld...\n",
(long)(HOP3c(s1, 1, strend) - i_strpos)));
other_last = HOP3c(last1, prog->anchored_offset+1, strend);
goto restart;
}
else {
- DEBUG_r(PerlIO_printf(Perl_debug_log, " at offset %ld...\n",
+ DEBUG_EXECUTE_r(PerlIO_printf(Perl_debug_log, " at offset %ld...\n",
(long)(s - i_strpos)));
t = HOP3c(s, -prog->anchored_offset, strbeg);
other_last = HOP3c(s, 1, strend);
}
}
else { /* Take into account the floating substring. */
- char *last, *last1;
- char *s1 = s;
-
- t = HOP3c(s, -start_shift, strbeg);
- last1 = last =
- HOP3c(strend, -prog->minlen + prog->float_min_offset, strbeg);
- if (CHR_DIST((U8*)last, (U8*)t) > prog->float_max_offset)
- last = HOP3c(t, prog->float_max_offset, strend);
- s = HOP3c(t, prog->float_min_offset, strend);
- if (s < other_last)
- s = other_last;
+ char *last, *last1;
+ char *s1 = s;
+ SV* must;
+
+ t = HOP3c(s, -start_shift, strbeg);
+ last1 = last =
+ HOP3c(strend, -prog->minlen + prog->float_min_offset, strbeg);
+ if (CHR_DIST((U8*)last, (U8*)t) > prog->float_max_offset)
+ last = HOP3c(t, prog->float_max_offset, strend);
+ s = HOP3c(t, prog->float_min_offset, strend);
+ if (s < other_last)
+ s = other_last;
/* XXXX It is not documented what units *_offsets are in. Assume bytes. */
- /* fbm_instr() takes into account exact value of end-of-str
- if the check is SvTAIL(ed). Since false positives are OK,
- and end-of-str is not later than strend we are OK. */
+ must = do_utf8 ? prog->float_utf8 : prog->float_substr;
+ /* fbm_instr() takes into account exact value of end-of-str
+ if the check is SvTAIL(ed). Since false positives are OK,
+ 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 */
+ }
+ else
s = fbm_instr((unsigned char*)s,
- (unsigned char*)last + SvCUR(prog->float_substr)
- - (SvTAIL(prog->float_substr)!=0),
- prog->float_substr, PL_multiline ? FBMrf_MULTILINE : 0);
- DEBUG_r(PerlIO_printf(Perl_debug_log, "%s floating substr `%s%.*s%s'%s",
- (s ? "Found" : "Contradicts"),
- PL_colors[0],
- (int)(SvCUR(prog->float_substr)
- - (SvTAIL(prog->float_substr)!=0)),
- SvPVX(prog->float_substr),
- PL_colors[1], (SvTAIL(prog->float_substr) ? "$" : "")));
- if (!s) {
- if (last1 == last) {
- DEBUG_r(PerlIO_printf(Perl_debug_log,
- ", giving up...\n"));
- goto fail_finish;
- }
- DEBUG_r(PerlIO_printf(Perl_debug_log,
- ", trying anchored starting at offset %ld...\n",
- (long)(s1 + 1 - i_strpos)));
- other_last = last;
- s = HOP3c(t, 1, strend);
- goto restart;
- }
- else {
- DEBUG_r(PerlIO_printf(Perl_debug_log, " at offset %ld...\n",
- (long)(s - i_strpos)));
- other_last = s; /* Fix this later. --Hugo */
- s = s1;
- if (t == strpos)
- goto try_at_start;
- goto try_at_offset;
+ (unsigned char*)last + SvCUR(must)
+ - (SvTAIL(must)!=0),
+ must, multiline ? FBMrf_MULTILINE : 0);
+ DEBUG_EXECUTE_r(PerlIO_printf(Perl_debug_log, "%s floating substr `%s%.*s%s'%s",
+ (s ? "Found" : "Contradicts"),
+ PL_colors[0],
+ (int)(SvCUR(must) - (SvTAIL(must)!=0)),
+ SvPVX(must),
+ PL_colors[1], (SvTAIL(must) ? "$" : "")));
+ if (!s) {
+ if (last1 == last) {
+ DEBUG_EXECUTE_r(PerlIO_printf(Perl_debug_log,
+ ", giving up...\n"));
+ goto fail_finish;
}
+ DEBUG_EXECUTE_r(PerlIO_printf(Perl_debug_log,
+ ", trying anchored starting at offset %ld...\n",
+ (long)(s1 + 1 - i_strpos)));
+ other_last = last;
+ s = HOP3c(t, 1, strend);
+ goto restart;
+ }
+ else {
+ DEBUG_EXECUTE_r(PerlIO_printf(Perl_debug_log, " at offset %ld...\n",
+ (long)(s - i_strpos)));
+ other_last = s; /* Fix this later. --Hugo */
+ s = s1;
+ if (t == strpos)
+ goto try_at_start;
+ goto try_at_offset;
+ }
}
}
t = s - prog->check_offset_max;
if (s - strpos > prog->check_offset_max /* signed-corrected t > strpos */
- && (!(prog->reganch & ROPT_UTF8)
+ && (!do_utf8
|| ((t = reghopmaybe3_c(s, -prog->check_offset_max, strpos))
&& t > strpos))) {
/* Fixed substring is found far enough so that the match
while (t < strend - prog->minlen) {
if (*t == '\n') {
if (t < check_at - prog->check_offset_min) {
- if (prog->anchored_substr) {
+ if (do_utf8 ? prog->anchored_utf8 : prog->anchored_substr) {
/* Since we moved from the found position,
we definitely contradict the found anchored
substr. Due to the above check we do not
is float. Redo checking for "other"=="fixed".
*/
strpos = t + 1;
- DEBUG_r(PerlIO_printf(Perl_debug_log, "Found /%s^%s/m at offset %ld, rescanning for anchored from offset %ld...\n",
+ DEBUG_EXECUTE_r(PerlIO_printf(Perl_debug_log, "Found /%s^%s/m at offset %ld, rescanning for anchored from offset %ld...\n",
PL_colors[0],PL_colors[1], (long)(strpos - i_strpos), (long)(strpos - i_strpos + prog->anchored_offset)));
goto do_other_anchored;
}
/* We don't contradict the found floating substring. */
/* XXXX Why not check for STCLASS? */
s = t + 1;
- DEBUG_r(PerlIO_printf(Perl_debug_log, "Found /%s^%s/m at offset %ld...\n",
+ DEBUG_EXECUTE_r(PerlIO_printf(Perl_debug_log, "Found /%s^%s/m at offset %ld...\n",
PL_colors[0],PL_colors[1], (long)(s - i_strpos)));
goto set_useful;
}
/* Position contradicts check-string */
/* XXXX probably better to look for check-string
than for "\n", so one should lower the limit for t? */
- DEBUG_r(PerlIO_printf(Perl_debug_log, "Found /%s^%s/m, restarting lookup for check-string at offset %ld...\n",
+ DEBUG_EXECUTE_r(PerlIO_printf(Perl_debug_log, "Found /%s^%s/m, restarting lookup for check-string at offset %ld...\n",
PL_colors[0],PL_colors[1], (long)(t + 1 - i_strpos)));
other_last = strpos = s = t + 1;
goto restart;
}
t++;
}
- DEBUG_r(PerlIO_printf(Perl_debug_log, "Did not find /%s^%s/m...\n",
+ DEBUG_EXECUTE_r(PerlIO_printf(Perl_debug_log, "Did not find /%s^%s/m...\n",
PL_colors[0],PL_colors[1]));
goto fail_finish;
}
else {
- DEBUG_r(PerlIO_printf(Perl_debug_log, "Starting position does not contradict /%s^%s/m...\n",
+ DEBUG_EXECUTE_r(PerlIO_printf(Perl_debug_log, "Starting position does not contradict /%s^%s/m...\n",
PL_colors[0],PL_colors[1]));
}
s = t;
set_useful:
- ++BmUSEFUL(prog->check_substr); /* hooray/5 */
+ ++BmUSEFUL(do_utf8 ? prog->check_utf8 : prog->check_substr); /* hooray/5 */
}
else {
/* The found string does not prohibit matching at strpos,
t = strpos;
goto find_anchor;
}
- DEBUG_r( if (ml_anch)
+ DEBUG_EXECUTE_r( if (ml_anch)
PerlIO_printf(Perl_debug_log, "Position at offset %ld does not contradict /%s^%s/m...\n",
(long)(strpos - i_strpos), PL_colors[0],PL_colors[1]);
);
success_at_start:
if (!(prog->reganch & ROPT_NAUGHTY) /* XXXX If strpos moved? */
- && prog->check_substr /* Could be deleted already */
- && --BmUSEFUL(prog->check_substr) < 0
- && prog->check_substr == prog->float_substr)
+ && (do_utf8 ? (
+ prog->check_utf8 /* Could be deleted already */
+ && --BmUSEFUL(prog->check_utf8) < 0
+ && (prog->check_utf8 == prog->float_utf8)
+ ) : (
+ prog->check_substr /* Could be deleted already */
+ && --BmUSEFUL(prog->check_substr) < 0
+ && (prog->check_substr == prog->float_substr)
+ )))
{
/* If flags & SOMETHING - do not do it many times on the same match */
- DEBUG_r(PerlIO_printf(Perl_debug_log, "... Disabling check substring...\n"));
- SvREFCNT_dec(prog->check_substr);
- prog->check_substr = Nullsv; /* disable */
- prog->float_substr = Nullsv; /* clear */
+ DEBUG_EXECUTE_r(PerlIO_printf(Perl_debug_log, "... Disabling check substring...\n"));
+ SvREFCNT_dec(do_utf8 ? prog->check_utf8 : prog->check_substr);
+ if (do_utf8 ? prog->check_substr : prog->check_utf8)
+ SvREFCNT_dec(do_utf8 ? prog->check_substr : prog->check_utf8);
+ prog->check_substr = prog->check_utf8 = Nullsv; /* disable */
+ prog->float_substr = prog->float_utf8 = Nullsv; /* clear */
check = Nullsv; /* abort */
s = strpos;
/* XXXX This is a remnant of the old implementation. It
int cl_l = (PL_regkind[(U8)OP(prog->regstclass)] == EXACT
? CHR_DIST(str+STR_LEN(prog->regstclass), str)
: 1);
- char *endpos = (prog->anchored_substr || ml_anch)
+ char *endpos = (prog->anchored_substr || prog->anchored_utf8 || ml_anch)
? HOP3c(s, (prog->minlen ? cl_l : 0), strend)
- : (prog->float_substr
+ : (prog->float_substr || prog->float_utf8
? HOP3c(HOP3c(check_at, -start_shift, strbeg),
cl_l, strend)
: strend);
char *startpos = strbeg;
t = s;
- if (prog->reganch & ROPT_UTF8) {
- PL_regdata = prog->data;
- PL_bostr = startpos;
- }
+ cache_re(prog);
s = find_byclass(prog, prog->regstclass, s, endpos, startpos, 1);
if (!s) {
#ifdef DEBUGGING
char *what = 0;
#endif
if (endpos == strend) {
- DEBUG_r( PerlIO_printf(Perl_debug_log,
+ DEBUG_EXECUTE_r( PerlIO_printf(Perl_debug_log,
"Could not match STCLASS...\n") );
goto fail;
}
- DEBUG_r( PerlIO_printf(Perl_debug_log,
+ DEBUG_EXECUTE_r( PerlIO_printf(Perl_debug_log,
"This position contradicts STCLASS...\n") );
if ((prog->reganch & ROPT_ANCH) && !ml_anch)
goto fail;
/* Contradict one of substrings */
- if (prog->anchored_substr) {
- if (prog->anchored_substr == check) {
- DEBUG_r( what = "anchored" );
+ if (prog->anchored_substr || prog->anchored_utf8) {
+ if ((do_utf8 ? prog->anchored_utf8 : prog->anchored_substr) == check) {
+ DEBUG_EXECUTE_r( what = "anchored" );
hop_and_restart:
s = HOP3c(t, 1, strend);
if (s + start_shift + end_shift > strend) {
/* XXXX Should be taken into account earlier? */
- DEBUG_r( PerlIO_printf(Perl_debug_log,
+ DEBUG_EXECUTE_r( PerlIO_printf(Perl_debug_log,
"Could not match STCLASS...\n") );
goto fail;
}
if (!check)
goto giveup;
- DEBUG_r( PerlIO_printf(Perl_debug_log,
+ DEBUG_EXECUTE_r( PerlIO_printf(Perl_debug_log,
"Looking for %s substr starting at offset %ld...\n",
what, (long)(s + start_shift - i_strpos)) );
goto restart;
s = check_at;
if (!check)
goto giveup;
- DEBUG_r( PerlIO_printf(Perl_debug_log,
+ DEBUG_EXECUTE_r( PerlIO_printf(Perl_debug_log,
"Looking for anchored substr starting at offset %ld...\n",
(long)(other_last - i_strpos)) );
goto do_other_anchored;
s = t = t + 1;
if (!check)
goto giveup;
- DEBUG_r( PerlIO_printf(Perl_debug_log,
+ DEBUG_EXECUTE_r( PerlIO_printf(Perl_debug_log,
"Looking for /%s^%s/m starting at offset %ld...\n",
PL_colors[0],PL_colors[1], (long)(t - i_strpos)) );
goto try_at_offset;
}
- if (!prog->float_substr) /* Could have been deleted */
+ if (!(do_utf8 ? prog->float_utf8 : prog->float_substr)) /* Could have been deleted */
goto fail;
/* Check is floating subtring. */
retry_floating_check:
t = check_at - start_shift;
- DEBUG_r( what = "floating" );
+ DEBUG_EXECUTE_r( what = "floating" );
goto hop_and_restart;
}
if (t != s) {
- DEBUG_r(PerlIO_printf(Perl_debug_log,
+ DEBUG_EXECUTE_r(PerlIO_printf(Perl_debug_log,
"By STCLASS: moving %ld --> %ld\n",
(long)(t - i_strpos), (long)(s - i_strpos))
);
}
else {
- DEBUG_r(PerlIO_printf(Perl_debug_log,
+ DEBUG_EXECUTE_r(PerlIO_printf(Perl_debug_log,
"Does not contradict STCLASS...\n");
);
}
}
giveup:
- DEBUG_r(PerlIO_printf(Perl_debug_log, "%s%s:%s match at offset %ld\n",
+ DEBUG_EXECUTE_r(PerlIO_printf(Perl_debug_log, "%s%s:%s match at offset %ld\n",
PL_colors[4], (check ? "Guessed" : "Giving up"),
PL_colors[5], (long)(s - i_strpos)) );
return s;
fail_finish: /* Substring not found */
- if (prog->check_substr) /* could be removed already */
- BmUSEFUL(prog->check_substr) += 5; /* hooray */
+ if (prog->check_substr || prog->check_utf8) /* could be removed already */
+ BmUSEFUL(do_utf8 ? prog->check_utf8 : prog->check_substr) += 5; /* hooray */
fail:
- DEBUG_r(PerlIO_printf(Perl_debug_log, "%sMatch rejected by optimizer%s\n",
+ DEBUG_EXECUTE_r(PerlIO_printf(Perl_debug_log, "%sMatch rejected by optimizer%s\n",
PL_colors[4],PL_colors[5]));
return Nullch;
}
I32 doevery = (prog->reganch & ROPT_SKIP) == 0;
char *m;
STRLEN ln;
+ STRLEN lnc;
+ register STRLEN uskip;
unsigned int c1;
unsigned int c2;
char *e;
/* We know what class it must start with. */
switch (OP(c)) {
case ANYOF:
- while (s < strend) {
- STRLEN skip = do_utf8 ? UTF8SKIP(s) : 1;
-
- if (reginclass(c, (U8*)s, do_utf8) ||
- (ANYOF_UNICODE_FOLD_SHARP_S(c, s, strend) &&
- (skip = 2))) {
- if (tmp && (norun || regtry(prog, s)))
- goto got_it;
- else
- tmp = doevery;
- }
- else
- tmp = 1;
- s += skip;
+ if (do_utf8) {
+ while (s + (uskip = UTF8SKIP(s)) <= strend) {
+ if ((ANYOF_FLAGS(c) & ANYOF_UNICODE) ||
+ !UTF8_IS_INVARIANT((U8)s[0]) ?
+ reginclass(c, (U8*)s, 0, do_utf8) :
+ REGINCLASS(c, (U8*)s)) {
+ if (tmp && (norun || regtry(prog, s)))
+ goto got_it;
+ else
+ tmp = doevery;
+ }
+ else
+ tmp = 1;
+ s += uskip;
+ }
+ }
+ else {
+ while (s < strend) {
+ STRLEN skip = 1;
+
+ if (REGINCLASS(c, (U8*)s) ||
+ (ANYOF_FOLD_SHARP_S(c, s, strend) &&
+ /* The assignment of 2 is intentional:
+ * for the folded sharp s, the skip is 2. */
+ (skip = SHARP_S_SKIP))) {
+ if (tmp && (norun || regtry(prog, s)))
+ goto got_it;
+ else
+ tmp = doevery;
+ }
+ else
+ tmp = 1;
+ s += skip;
+ }
}
break;
case CANY:
}
break;
case EXACTF:
- m = STRING(c);
- ln = STR_LEN(c);
+ m = STRING(c);
+ ln = STR_LEN(c); /* length to match in octets/bytes */
+ lnc = (I32) ln; /* length to match in characters */
if (UTF) {
STRLEN ulen1, ulen2;
- U8 tmpbuf1[UTF8_MAXLEN_UCLC+1];
- U8 tmpbuf2[UTF8_MAXLEN_UCLC+1];
+ U8 *sm = (U8 *) m;
+ U8 tmpbuf1[UTF8_MAXBYTES_CASE+1];
+ U8 tmpbuf2[UTF8_MAXBYTES_CASE+1];
to_utf8_lower((U8*)m, tmpbuf1, &ulen1);
to_utf8_upper((U8*)m, tmpbuf2, &ulen2);
- c1 = utf8_to_uvuni(tmpbuf1, 0);
- c2 = utf8_to_uvuni(tmpbuf2, 0);
+ c1 = utf8n_to_uvchr(tmpbuf1, UTF8_MAXBYTES_CASE,
+ 0, ckWARN(WARN_UTF8) ? 0 : UTF8_ALLOW_ANY);
+ c2 = utf8n_to_uvchr(tmpbuf2, UTF8_MAXBYTES_CASE,
+ 0, ckWARN(WARN_UTF8) ? 0 : UTF8_ALLOW_ANY);
+ lnc = 0;
+ while (sm < ((U8 *) m + ln)) {
+ lnc++;
+ sm += UTF8SKIP(sm);
+ }
}
else {
c1 = *(U8*)m;
}
goto do_exactf;
case EXACTFL:
- m = STRING(c);
- ln = STR_LEN(c);
+ m = STRING(c);
+ ln = STR_LEN(c);
+ lnc = (I32) ln;
c1 = *(U8*)m;
c2 = PL_fold_locale[c1];
do_exactf:
- e = do_utf8 ? s + ln : strend - ln;
+ e = HOP3c(strend, -((I32)lnc), s);
if (norun && e < s)
e = s; /* Due to minlen logic of intuit() */
* text of the node. The c1 and c2 are the first
* characters (though in Unicode it gets a bit
* more complicated because there are more cases
- * than just upper and lower: one is really supposed
- * to use the so-called folding case for case-insensitive
- * matching (called "loose matching" in Unicode). */
+ * than just upper and lower: one needs to use
+ * the so-called folding case for case-insensitive
+ * matching (called "loose matching" in Unicode).
+ * ibcmp_utf8() will do just that. */
if (do_utf8) {
UV c, f;
- U8 tmpbuf [UTF8_MAXLEN+1];
- U8 foldbuf[UTF8_MAXLEN_FOLD+1];
+ U8 tmpbuf [UTF8_MAXBYTES+1];
+ U8 foldbuf[UTF8_MAXBYTES_CASE+1];
STRLEN len, foldlen;
if (c1 == c2) {
+ /* Upper and lower of 1st char are equal -
+ * probably not a "letter". */
while (s <= e) {
- c = utf8_to_uvchr((U8*)s, &len);
+ c = utf8n_to_uvchr((U8*)s, UTF8_MAXBYTES, &len,
+ ckWARN(WARN_UTF8) ?
+ 0 : UTF8_ALLOW_ANY);
if ( c == c1
&& (ln == len ||
ibcmp_utf8(s, (char **)0, 0, do_utf8,
- m, (char **)0, ln, UTF))
+ m, (char **)0, ln, (bool)UTF))
&& (norun || regtry(prog, s)) )
goto got_it;
else {
!ibcmp_utf8((char *) foldbuf,
(char **)0, foldlen, do_utf8,
m,
- (char **)0, ln, UTF))
+ (char **)0, ln, (bool)UTF))
&& (norun || regtry(prog, s)) )
goto got_it;
}
}
else {
while (s <= e) {
- c = utf8_to_uvchr((U8*)s, &len);
+ c = utf8n_to_uvchr((U8*)s, UTF8_MAXBYTES, &len,
+ ckWARN(WARN_UTF8) ?
+ 0 : UTF8_ALLOW_ANY);
/* Handle some of the three Greek sigmas cases.
* Note that not all the possible combinations
if ( (c == c1 || c == c2)
&& (ln == len ||
ibcmp_utf8(s, (char **)0, 0, do_utf8,
- m, (char **)0, ln, UTF))
+ m, (char **)0, ln, (bool)UTF))
&& (norun || regtry(prog, s)) )
goto got_it;
else {
if ( f != c
&& (f == c1 || f == c2)
&& (ln == foldlen ||
- !ibcmp_utf8((char *)foldbuf,
+ !ibcmp_utf8((char *) foldbuf,
(char **)0, foldlen, do_utf8,
m,
- (char **)0, ln, UTF))
+ (char **)0, ln, (bool)UTF))
&& (norun || regtry(prog, s)) )
goto got_it;
}
if (s == PL_bostr)
tmp = '\n';
else {
- U8 *r = reghop3((U8*)s, -1, (U8*)startpos);
+ U8 *r = reghop3((U8*)s, -1, (U8*)PL_bostr);
- if (s > (char*)r)
- tmp = (I32)utf8n_to_uvchr(r, s - (char*)r, 0, 0);
+ tmp = utf8n_to_uvchr(r, UTF8SKIP(r), 0, 0);
}
tmp = ((OP(c) == BOUND ?
isALNUM_uni(tmp) : isALNUM_LC_uvchr(UNI_TO_NATIVE(tmp))) != 0);
LOAD_UTF8_CHARCLASS(alnum,"a");
- while (s < strend) {
+ while (s + (uskip = UTF8SKIP(s)) <= strend) {
if (tmp == !(OP(c) == BOUND ?
swash_fetch(PL_utf8_alnum, (U8*)s, do_utf8) :
isALNUM_LC_utf8((U8*)s)))
if ((norun || regtry(prog, s)))
goto got_it;
}
- s += UTF8SKIP(s);
+ s += uskip;
}
}
else {
if (s == PL_bostr)
tmp = '\n';
else {
- U8 *r = reghop3((U8*)s, -1, (U8*)startpos);
+ U8 *r = reghop3((U8*)s, -1, (U8*)PL_bostr);
- if (s > (char*)r)
- tmp = (I32)utf8n_to_uvchr(r, s - (char*)r, 0, 0);
+ tmp = utf8n_to_uvchr(r, UTF8SKIP(r), 0, 0);
}
tmp = ((OP(c) == NBOUND ?
isALNUM_uni(tmp) : isALNUM_LC_uvchr(UNI_TO_NATIVE(tmp))) != 0);
LOAD_UTF8_CHARCLASS(alnum,"a");
- while (s < strend) {
+ while (s + (uskip = UTF8SKIP(s)) <= strend) {
if (tmp == !(OP(c) == NBOUND ?
swash_fetch(PL_utf8_alnum, (U8*)s, do_utf8) :
isALNUM_LC_utf8((U8*)s)))
tmp = !tmp;
else if ((norun || regtry(prog, s)))
goto got_it;
- s += UTF8SKIP(s);
+ s += uskip;
}
}
else {
case ALNUM:
if (do_utf8) {
LOAD_UTF8_CHARCLASS(alnum,"a");
- while (s < strend) {
+ while (s + (uskip = UTF8SKIP(s)) <= strend) {
if (swash_fetch(PL_utf8_alnum, (U8*)s, do_utf8)) {
if (tmp && (norun || regtry(prog, s)))
goto got_it;
}
else
tmp = 1;
- s += UTF8SKIP(s);
+ s += uskip;
}
}
else {
case ALNUML:
PL_reg_flags |= RF_tainted;
if (do_utf8) {
- while (s < strend) {
+ while (s + (uskip = UTF8SKIP(s)) <= strend) {
if (isALNUM_LC_utf8((U8*)s)) {
if (tmp && (norun || regtry(prog, s)))
goto got_it;
}
else
tmp = 1;
- s += UTF8SKIP(s);
+ s += uskip;
}
}
else {
case NALNUM:
if (do_utf8) {
LOAD_UTF8_CHARCLASS(alnum,"a");
- while (s < strend) {
+ while (s + (uskip = UTF8SKIP(s)) <= strend) {
if (!swash_fetch(PL_utf8_alnum, (U8*)s, do_utf8)) {
if (tmp && (norun || regtry(prog, s)))
goto got_it;
}
else
tmp = 1;
- s += UTF8SKIP(s);
+ s += uskip;
}
}
else {
case NALNUML:
PL_reg_flags |= RF_tainted;
if (do_utf8) {
- while (s < strend) {
+ while (s + (uskip = UTF8SKIP(s)) <= strend) {
if (!isALNUM_LC_utf8((U8*)s)) {
if (tmp && (norun || regtry(prog, s)))
goto got_it;
}
else
tmp = 1;
- s += UTF8SKIP(s);
+ s += uskip;
}
}
else {
case SPACE:
if (do_utf8) {
LOAD_UTF8_CHARCLASS(space," ");
- while (s < strend) {
+ while (s + (uskip = UTF8SKIP(s)) <= strend) {
if (*s == ' ' || swash_fetch(PL_utf8_space,(U8*)s, do_utf8)) {
if (tmp && (norun || regtry(prog, s)))
goto got_it;
}
else
tmp = 1;
- s += UTF8SKIP(s);
+ s += uskip;
}
}
else {
case SPACEL:
PL_reg_flags |= RF_tainted;
if (do_utf8) {
- while (s < strend) {
+ while (s + (uskip = UTF8SKIP(s)) <= strend) {
if (*s == ' ' || isSPACE_LC_utf8((U8*)s)) {
if (tmp && (norun || regtry(prog, s)))
goto got_it;
}
else
tmp = 1;
- s += UTF8SKIP(s);
+ s += uskip;
}
}
else {
case NSPACE:
if (do_utf8) {
LOAD_UTF8_CHARCLASS(space," ");
- while (s < strend) {
+ while (s + (uskip = UTF8SKIP(s)) <= strend) {
if (!(*s == ' ' || swash_fetch(PL_utf8_space,(U8*)s, do_utf8))) {
if (tmp && (norun || regtry(prog, s)))
goto got_it;
}
else
tmp = 1;
- s += UTF8SKIP(s);
+ s += uskip;
}
}
else {
case NSPACEL:
PL_reg_flags |= RF_tainted;
if (do_utf8) {
- while (s < strend) {
+ while (s + (uskip = UTF8SKIP(s)) <= strend) {
if (!(*s == ' ' || isSPACE_LC_utf8((U8*)s))) {
if (tmp && (norun || regtry(prog, s)))
goto got_it;
}
else
tmp = 1;
- s += UTF8SKIP(s);
+ s += uskip;
}
}
else {
case DIGIT:
if (do_utf8) {
LOAD_UTF8_CHARCLASS(digit,"0");
- while (s < strend) {
+ while (s + (uskip = UTF8SKIP(s)) <= strend) {
if (swash_fetch(PL_utf8_digit,(U8*)s, do_utf8)) {
if (tmp && (norun || regtry(prog, s)))
goto got_it;
}
else
tmp = 1;
- s += UTF8SKIP(s);
+ s += uskip;
}
}
else {
case DIGITL:
PL_reg_flags |= RF_tainted;
if (do_utf8) {
- while (s < strend) {
+ while (s + (uskip = UTF8SKIP(s)) <= strend) {
if (isDIGIT_LC_utf8((U8*)s)) {
if (tmp && (norun || regtry(prog, s)))
goto got_it;
}
else
tmp = 1;
- s += UTF8SKIP(s);
+ s += uskip;
}
}
else {
case NDIGIT:
if (do_utf8) {
LOAD_UTF8_CHARCLASS(digit,"0");
- while (s < strend) {
+ while (s + (uskip = UTF8SKIP(s)) <= strend) {
if (!swash_fetch(PL_utf8_digit,(U8*)s, do_utf8)) {
if (tmp && (norun || regtry(prog, s)))
goto got_it;
}
else
tmp = 1;
- s += UTF8SKIP(s);
+ s += uskip;
}
}
else {
case NDIGITL:
PL_reg_flags |= RF_tainted;
if (do_utf8) {
- while (s < strend) {
+ while (s + (uskip = UTF8SKIP(s)) <= strend) {
if (!isDIGIT_LC_utf8((U8*)s)) {
if (tmp && (norun || regtry(prog, s)))
goto got_it;
}
else
tmp = 1;
- s += UTF8SKIP(s);
+ s += uskip;
}
}
else {
char *scream_olds;
SV* oreplsv = GvSV(PL_replgv);
bool do_utf8 = DO_UTF8(sv);
+ I32 multiline = prog->reganch & PMf_MULTILINE;
#ifdef DEBUGGING
SV *dsv0 = PERL_DEBUG_PAD_ZERO(0);
SV *dsv1 = PERL_DEBUG_PAD_ZERO(1);
#endif
+ GET_RE_DEBUG_FLAGS_DECL;
+
+ RX_MATCH_UTF8_set(prog,do_utf8);
+
PL_regcc = 0;
cache_re(prog);
minlen = prog->minlen;
if (strend - startpos < minlen) {
- DEBUG_r(PerlIO_printf(Perl_debug_log,
+ DEBUG_EXECUTE_r(PerlIO_printf(Perl_debug_log,
"String too short [regexec_flags]...\n"));
goto phooey;
}
PL_reg_ganch = strbeg;
}
- if (do_utf8 == (UTF!=0) &&
- !(flags & REXEC_CHECKED) && prog->check_substr != Nullsv) {
+ if (!(flags & REXEC_CHECKED) && (prog->check_substr != Nullsv || prog->check_utf8 != Nullsv)) {
re_scream_pos_data d;
d.scream_olds = &scream_olds;
d.scream_pos = &scream_pos;
s = re_intuit_start(prog, sv, s, strend, flags, &d);
if (!s) {
- DEBUG_r(PerlIO_printf(Perl_debug_log, "Not present...\n"));
+ DEBUG_EXECUTE_r(PerlIO_printf(Perl_debug_log, "Not present...\n"));
goto phooey; /* not present */
}
}
- DEBUG_r({
+ DEBUG_EXECUTE_r({
char *s0 = UTF ?
pv_uni_display(dsv0, (U8*)prog->precomp, prog->prelen, 60,
UNI_DISPLAY_REGEX) :
if (prog->reganch & (ROPT_ANCH & ~ROPT_ANCH_GPOS)) {
if (s == startpos && regtry(prog, startpos))
goto got_it;
- else if (PL_multiline || (prog->reganch & ROPT_IMPLICIT)
+ else if (multiline || (prog->reganch & ROPT_IMPLICIT)
|| (prog->reganch & ROPT_ANCH_MBOL)) /* XXXX SBOL? */
{
char *end;
dontbother = minlen - 1;
end = HOP3c(strend, -dontbother, strbeg) - 1;
/* for multiline we only have to try after newlines */
- if (prog->check_substr) {
+ if (prog->check_substr || prog->check_utf8) {
if (s == startpos)
goto after_try;
while (1) {
}
/* Messy cases: unanchored match. */
- if (prog->anchored_substr && prog->reganch & ROPT_SKIP) {
+ if ((prog->anchored_substr || prog->anchored_utf8) && prog->reganch & ROPT_SKIP) {
/* we have /x+whatever/ */
/* it must be a one character string (XXXX Except UTF?) */
- char ch = SvPVX(prog->anchored_substr)[0];
+ char ch;
#ifdef DEBUGGING
int did_match = 0;
#endif
+ if (!(do_utf8 ? prog->anchored_utf8 : prog->anchored_substr))
+ do_utf8 ? to_utf8_substr(prog) : to_byte_substr(prog);
+ ch = SvPVX(do_utf8 ? prog->anchored_utf8 : prog->anchored_substr)[0];
if (do_utf8) {
while (s < strend) {
if (*s == ch) {
- DEBUG_r( did_match = 1 );
+ DEBUG_EXECUTE_r( did_match = 1 );
if (regtry(prog, s)) goto got_it;
s += UTF8SKIP(s);
while (s < strend && *s == ch)
else {
while (s < strend) {
if (*s == ch) {
- DEBUG_r( did_match = 1 );
+ DEBUG_EXECUTE_r( did_match = 1 );
if (regtry(prog, s)) goto got_it;
s++;
while (s < strend && *s == ch)
s++;
}
}
- DEBUG_r(if (!did_match)
+ DEBUG_EXECUTE_r(if (!did_match)
PerlIO_printf(Perl_debug_log,
"Did not find anchored character...\n")
);
}
/*SUPPRESS 560*/
- else if (do_utf8 == (UTF!=0) &&
- (prog->anchored_substr != Nullsv
- || (prog->float_substr != Nullsv
- && prog->float_max_offset < strend - s))) {
- SV *must = prog->anchored_substr
- ? prog->anchored_substr : prog->float_substr;
- I32 back_max =
- prog->anchored_substr ? prog->anchored_offset : prog->float_max_offset;
- I32 back_min =
- prog->anchored_substr ? prog->anchored_offset : prog->float_min_offset;
- char *last = HOP3c(strend, /* Cannot start after this */
- -(I32)(CHR_SVLEN(must)
- - (SvTAIL(must) != 0) + back_min), strbeg);
+ else if (prog->anchored_substr != Nullsv
+ || prog->anchored_utf8 != Nullsv
+ || ((prog->float_substr != Nullsv || prog->float_utf8 != Nullsv)
+ && prog->float_max_offset < strend - s)) {
+ SV *must;
+ I32 back_max;
+ I32 back_min;
+ char *last;
char *last1; /* Last position checked before */
#ifdef DEBUGGING
int did_match = 0;
#endif
+ if (prog->anchored_substr || prog->anchored_utf8) {
+ if (!(do_utf8 ? prog->anchored_utf8 : prog->anchored_substr))
+ do_utf8 ? to_utf8_substr(prog) : to_byte_substr(prog);
+ must = do_utf8 ? prog->anchored_utf8 : prog->anchored_substr;
+ back_max = back_min = prog->anchored_offset;
+ } else {
+ if (!(do_utf8 ? prog->float_utf8 : prog->float_substr))
+ do_utf8 ? to_utf8_substr(prog) : to_byte_substr(prog);
+ must = do_utf8 ? prog->float_utf8 : prog->float_substr;
+ 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 (s > PL_bostr)
last1 = HOPc(s, -1);
end_shift, &scream_pos, 0))
: (s = fbm_instr((unsigned char*)HOP3(s, back_min, strend),
(unsigned char*)strend, must,
- PL_multiline ? FBMrf_MULTILINE : 0))) ) {
- DEBUG_r( did_match = 1 );
+ multiline ? FBMrf_MULTILINE : 0))) ) {
+ /* we may be pointing at the wrong string */
+ if ((flags & REXEC_SCREAM) && RX_MATCH_COPIED(prog))
+ s = strbeg + (s - SvPVX(sv));
+ DEBUG_EXECUTE_r( did_match = 1 );
if (HOPc(s, -back_max) > last1) {
last1 = HOPc(s, -back_min);
s = HOPc(s, -back_max);
}
}
}
- DEBUG_r(if (!did_match)
+ DEBUG_EXECUTE_r(if (!did_match)
PerlIO_printf(Perl_debug_log,
"Did not find %s substr `%s%.*s%s'%s...\n",
- ((must == prog->anchored_substr)
+ ((must == prog->anchored_substr || must == prog->anchored_utf8)
? "anchored" : "floating"),
PL_colors[0],
(int)(SvCUR(must) - (SvTAIL(must)!=0)),
goto phooey;
}
else if ((c = prog->regstclass)) {
- if (minlen && PL_regkind[(U8)OP(prog->regstclass)] != EXACT)
+ if (minlen) {
+ I32 op = (U8)OP(prog->regstclass);
/* don't bother with what can't match */
- strend = HOPc(strend, -(minlen - 1));
- DEBUG_r({
+ if (PL_regkind[op] != EXACT && op != CANY)
+ strend = HOPc(strend, -(minlen - 1));
+ }
+ DEBUG_EXECUTE_r({
SV *prop = sv_newmortal();
char *s0;
char *s1;
});
if (find_byclass(prog, c, s, strend, startpos, 0))
goto got_it;
- DEBUG_r(PerlIO_printf(Perl_debug_log, "Contradicts stclass...\n"));
+ DEBUG_EXECUTE_r(PerlIO_printf(Perl_debug_log, "Contradicts stclass...\n"));
}
else {
dontbother = 0;
- if (prog->float_substr != Nullsv) { /* Trim the end. */
+ if (prog->float_substr != Nullsv || prog->float_utf8 != Nullsv) {
+ /* Trim the end. */
char *last;
+ SV* float_real;
+
+ if (!(do_utf8 ? prog->float_utf8 : prog->float_substr))
+ do_utf8 ? to_utf8_substr(prog) : to_byte_substr(prog);
+ float_real = do_utf8 ? prog->float_utf8 : prog->float_substr;
if (flags & REXEC_SCREAM) {
- last = screaminstr(sv, prog->float_substr, s - strbeg,
+ last = screaminstr(sv, float_real, s - strbeg,
end_shift, &scream_pos, 1); /* last one */
if (!last)
last = scream_olds; /* Only one occurrence. */
+ /* we may be pointing at the wrong string */
+ else if (RX_MATCH_COPIED(prog))
+ s = strbeg + (s - SvPVX(sv));
}
else {
STRLEN len;
- char *little = SvPV(prog->float_substr, len);
+ char *little = SvPV(float_real, len);
- if (SvTAIL(prog->float_substr)) {
+ if (SvTAIL(float_real)) {
if (memEQ(strend - len + 1, little, len - 1))
last = strend - len + 1;
- else if (!PL_multiline)
+ else if (!multiline)
last = memEQ(strend - len, little, len)
? strend - len : Nullch;
else
}
}
if (last == NULL) {
- DEBUG_r(PerlIO_printf(Perl_debug_log,
+ DEBUG_EXECUTE_r(PerlIO_printf(Perl_debug_log,
"%sCan't trim the tail, match fails (should not happen)%s\n",
PL_colors[4],PL_colors[5]));
goto phooey; /* Should not happen! */
/* make sure $`, $&, $', and $digit will work later */
if ( !(flags & REXEC_NOT_FIRST) ) {
- if (RX_MATCH_COPIED(prog)) {
- Safefree(prog->subbeg);
- RX_MATCH_COPIED_off(prog);
- }
+ RX_MATCH_COPY_FREE(prog);
if (flags & REXEC_COPY_STR) {
I32 i = PL_regeol - startpos + (stringarg - strbeg);
-
- s = savepvn(strbeg, i);
- prog->subbeg = s;
+#ifdef PERL_COPY_ON_WRITE
+ if ((SvIsCOW(sv)
+ || (SvFLAGS(sv) & CAN_COW_MASK) == CAN_COW_FLAGS)) {
+ if (DEBUG_C_TEST) {
+ PerlIO_printf(Perl_debug_log,
+ "Copy on write: regexp capture, type %d\n",
+ (int) SvTYPE(sv));
+ }
+ prog->saved_copy = sv_setsv_cow(prog->saved_copy, sv);
+ prog->subbeg = SvPVX(prog->saved_copy);
+ assert (SvPOKp(prog->saved_copy));
+ } else
+#endif
+ {
+ RX_MATCH_COPIED_on(prog);
+ s = savepvn(strbeg, i);
+ prog->subbeg = s;
+ }
prog->sublen = i;
- RX_MATCH_COPIED_on(prog);
}
else {
prog->subbeg = strbeg;
return 1;
phooey:
- DEBUG_r(PerlIO_printf(Perl_debug_log, "%sMatch failed%s\n",
+ DEBUG_EXECUTE_r(PerlIO_printf(Perl_debug_log, "%sMatch failed%s\n",
PL_colors[4],PL_colors[5]));
if (PL_reg_eval_set)
restore_pos(aTHX_ 0);
register I32 *sp;
register I32 *ep;
CHECKPOINT lastcp;
+ GET_RE_DEBUG_FLAGS_DECL;
#ifdef DEBUGGING
PL_regindent = 0; /* XXXX Not good when matches are reenterable... */
MAGIC *mg;
PL_reg_eval_set = RS_init;
- DEBUG_r(DEBUG_s(
+ DEBUG_EXECUTE_r(DEBUG_s(
PerlIO_printf(Perl_debug_log, " setting stack tmpbase at %"IVdf"\n",
(IV)(PL_stack_sp - PL_stack_base));
));
if (PL_reg_sv) {
/* Make $_ available to executed code. */
if (PL_reg_sv != DEFSV) {
- /* SAVE_DEFSV does *not* suffice here for USE_5005THREADS */
- SAVESPTR(DEFSV);
+ SAVE_DEFSV;
DEFSV = PL_reg_sv;
}
$` inside (?{}) could fail... */
PL_reg_oldsaved = prog->subbeg;
PL_reg_oldsavedlen = prog->sublen;
+#ifdef PERL_COPY_ON_WRITE
+ PL_nrs = prog->saved_copy;
+#endif
RX_MATCH_COPIED_off(prog);
}
else
PL_reglastparen = &prog->lastparen;
PL_reglastcloseparen = &prog->lastcloseparen;
prog->lastparen = 0;
+ prog->lastcloseparen = 0;
PL_regsize = 0;
- DEBUG_r(PL_reg_starttry = startpos);
+ DEBUG_EXECUTE_r(PL_reg_starttry = startpos);
if (PL_reg_start_tmpl <= prog->nparens) {
PL_reg_start_tmpl = prog->nparens*3/2 + 3;
if(PL_reg_start_tmp)
New(22,PL_reg_start_tmp, PL_reg_start_tmpl, char*);
}
-#ifdef DEBUGGING
- sv_setpvn(PERL_DEBUG_PAD(0), "", 0);
- sv_setpvn(PERL_DEBUG_PAD(1), "", 0);
- sv_setpvn(PERL_DEBUG_PAD(2), "", 0);
-#endif
-
/* XXXX What this code is doing here?!!! There should be no need
to do this again and again, PL_reglastparen should take care of
this! --ilya*/
sp = prog->startp;
ep = prog->endp;
if (prog->nparens) {
- for (i = prog->nparens; i > *PL_reglastparen; i--) {
+ for (i = prog->nparens; i > (I32)*PL_reglastparen; i--) {
*++sp = -1;
*++ep = -1;
}
#define sayNO_SILENT goto do_no
#define saySAME(x) if (x) goto yes; else goto no
-#define REPORT_CODE_OFF 24
+#define POSCACHE_SUCCESS 0 /* caching success rather than failure */
+#define POSCACHE_SEEN 1 /* we know what we're caching */
+#define POSCACHE_START 2 /* the real cache: this bit maps to pos 0 */
+#define CACHEsayYES STMT_START { \
+ if (PL_reg_poscache) { \
+ if (!(PL_reg_poscache[0] & (1<<POSCACHE_SEEN))) \
+ PL_reg_poscache[0] |= (1<<POSCACHE_SUCCESS) || (1<<POSCACHE_SEEN); \
+ else if (!(PL_reg_poscache[0] & (1<<POSCACHE_SUCCESS))) { \
+ /* cache records failure, but this is success */ \
+ I32 o = locinput - PL_bostr, b; \
+ o = (scan->flags & 0xf) - 1 + POSCACHE_START + o * (scan->flags>>4); \
+ b = o % 8; \
+ o /= 8; \
+ DEBUG_r( \
+ PerlIO_printf(Perl_debug_log, \
+ "%*s (remove success from failure cache)\n", \
+ REPORT_CODE_OFF+PL_regindent*2, "") \
+ ); \
+ PL_reg_poscache[o] &= ~(1<<b); \
+ } \
+ } \
+ sayYES; \
+} STMT_END
+#define CACHEsayNO STMT_START { \
+ if (PL_reg_poscache) { \
+ if (!(PL_reg_poscache[0] & (1<<POSCACHE_SEEN))) \
+ PL_reg_poscache[0] |= (1<<POSCACHE_SEEN); \
+ else if ((PL_reg_poscache[0] & (1<<POSCACHE_SUCCESS))) { \
+ /* cache records success, but this is failure */ \
+ I32 o = locinput - PL_bostr, b; \
+ o = (scan->flags & 0xf) - 1 + POSCACHE_START + o * (scan->flags>>4); \
+ b = o % 8; \
+ o /= 8; \
+ DEBUG_r( \
+ PerlIO_printf(Perl_debug_log, \
+ "%*s (remove failure from success cache)\n", \
+ REPORT_CODE_OFF+PL_regindent*2, "") \
+ ); \
+ PL_reg_poscache[o] &= ~(1<<b); \
+ } \
+ } \
+ sayNO; \
+} STMT_END
+
+/* this is used to determine how far from the left messages like
+ 'failed...' are printed. Currently 29 makes these messages line
+ up with the opcode they refer to. Earlier perls used 25 which
+ left these messages outdented making reviewing a debug output
+ quite difficult.
+*/
+#define REPORT_CODE_OFF 29
+
+
+/* Make sure there is a test for this +1 options in re_tests */
+#define TRIE_INITAL_ACCEPT_BUFFLEN 4;
+
+#define TRIE_CHECK_STATE_IS_ACCEPTING STMT_START { \
+ if ( trie->states[ state ].wordnum ) { \
+ if ( !accepted ) { \
+ ENTER; \
+ SAVETMPS; \
+ bufflen = TRIE_INITAL_ACCEPT_BUFFLEN ; \
+ sv_accept_buff=NEWSV( 1234, \
+ bufflen * sizeof(reg_trie_accepted) - 1 ); \
+ SvCUR_set( sv_accept_buff, sizeof(reg_trie_accepted) ); \
+ SvPOK_on( sv_accept_buff ); \
+ sv_2mortal( sv_accept_buff ); \
+ accept_buff = (reg_trie_accepted*)SvPV_nolen( sv_accept_buff );\
+ } else { \
+ if ( accepted >= bufflen ) { \
+ bufflen *= 2; \
+ accept_buff =(reg_trie_accepted*)SvGROW( sv_accept_buff, \
+ bufflen * sizeof(reg_trie_accepted) ); \
+ } \
+ SvCUR_set( sv_accept_buff,SvCUR( sv_accept_buff ) \
+ + sizeof( reg_trie_accepted ) ); \
+ } \
+ accept_buff[ accepted ].wordnum = trie->states[ state ].wordnum; \
+ accept_buff[ accepted ].endpos = uc; \
+ ++accepted; \
+ } } STMT_END
+
+#define TRIE_HANDLE_CHAR STMT_START { \
+ if ( uvc < 256 ) { \
+ charid = trie->charmap[ uvc ]; \
+ } else { \
+ charid = 0; \
+ if( trie->widecharmap ) { \
+ SV** svpp = (SV**)NULL; \
+ svpp = hv_fetch( trie->widecharmap, (char*)&uvc, \
+ sizeof( UV ), 0 ); \
+ if ( svpp ) { \
+ charid = (U16)SvIV( *svpp ); \
+ } \
+ } \
+ } \
+ if ( charid && \
+ ( base + charid > trie->uniquecharcount ) && \
+ ( base + charid - 1 - trie->uniquecharcount < trie->lasttrans) && \
+ trie->trans[ base + charid - 1 - trie->uniquecharcount ].check == state ) \
+ { \
+ state = trie->trans[ base + charid - 1 - trie->uniquecharcount ].next; \
+ } else { \
+ state = 0; \
+ } \
+ uc += len; \
+ } STMT_END
/*
- regmatch - main matching routine
register I32 c1 = 0, c2 = 0, paren; /* case fold search, parenth */
int minmod = 0, sw = 0, logical = 0;
I32 unwind = 0;
+
+ /* used by the trie code */
+ SV *sv_accept_buff; /* accepting states we have traversed */
+ reg_trie_accepted *accept_buff; /* "" */
+ reg_trie_data *trie; /* what trie are we using right now */
+ U32 accepted = 0; /* how many accepting states we have seen*/
+
#if 0
I32 firstcp = PL_savestack_ix;
#endif
SV *dsv0 = PERL_DEBUG_PAD_ZERO(0);
SV *dsv1 = PERL_DEBUG_PAD_ZERO(1);
SV *dsv2 = PERL_DEBUG_PAD_ZERO(2);
+
+ SV *re_debug_flags;
#endif
+ GET_RE_DEBUG_FLAGS;
+
#ifdef DEBUGGING
PL_regindent++;
#endif
+
/* Note that nextchr is a byte even in UTF */
nextchr = UCHARAT(locinput);
scan = prog;
while (scan != NULL) {
- DEBUG_r( {
+ DEBUG_EXECUTE_r( {
SV *prop = sv_newmortal();
int docolor = *PL_colors[0];
int taill = (docolor ? 10 : 7); /* 3 chars for "> <" */
regprop(prop, scan);
{
char *s0 =
- do_utf8 ?
+ do_utf8 && OP(scan) != CANY ?
pv_uni_display(dsv0, (U8*)(locinput - pref_len),
pref0_len, 60, UNI_DISPLAY_REGEX) :
locinput - pref_len;
int len0 = do_utf8 ? strlen(s0) : pref0_len;
- char *s1 = do_utf8 ?
+ char *s1 = do_utf8 && OP(scan) != CANY ?
pv_uni_display(dsv1, (U8*)(locinput - pref_len + pref0_len),
pref_len - pref0_len, 60, UNI_DISPLAY_REGEX) :
locinput - pref_len + pref0_len;
int len1 = do_utf8 ? strlen(s1) : pref_len - pref0_len;
- char *s2 = do_utf8 ?
+ char *s2 = do_utf8 && OP(scan) != CANY ?
pv_uni_display(dsv2, (U8*)locinput,
PL_regeol - locinput, 60, UNI_DISPLAY_REGEX) :
locinput;
switch (OP(scan)) {
case BOL:
- if (locinput == PL_bostr || (PL_multiline &&
- (nextchr || locinput < PL_regeol) && locinput[-1] == '\n') )
+ if (locinput == PL_bostr)
{
/* regtill = regbol; */
break;
break;
sayNO;
case EOL:
- if (PL_multiline)
- goto meol;
- else
goto seol;
case MEOL:
- meol:
if ((nextchr || locinput < PL_regeol) && nextchr != '\n')
sayNO;
break;
else
nextchr = UCHARAT(++locinput);
break;
+
+
+
+ /*
+ traverse the TRIE keeping track of all accepting states
+ we transition through until we get to a failing node.
+
+ we use two slightly different pieces of code to handle
+ the traversal depending on whether its case sensitive or
+ not. we reuse the accept code however. (this should probably
+ be turned into a macro.)
+
+ */
+ case TRIEF:
+ case TRIEFL:
+ {
+
+ U32 uniflags = ckWARN( WARN_UTF8 ) ? 0 : UTF8_ALLOW_ANY;
+ U8 *uc = ( U8* )locinput;
+ U32 state = 1;
+ U16 charid = 0;
+ U32 base = 0;
+ UV uvc = 0;
+ STRLEN len = 0;
+ STRLEN foldlen = 0;
+ U8 foldbuf[ UTF8_MAXBYTES_CASE + 1 ];
+ U8 *uscan = (U8*)NULL;
+ STRLEN bufflen=0;
+ accepted = 0;
+
+ trie = (reg_trie_data*)PL_regdata->data[ ARG( scan ) ];
+
+ while ( state && uc <= (U8*)PL_regeol ) {
+
+ TRIE_CHECK_STATE_IS_ACCEPTING;
+
+ base = trie->states[ state ].trans.base;
+
+ DEBUG_TRIE_EXECUTE_r(
+ PerlIO_printf( Perl_debug_log,
+ "%*s %sState: %4x, Base: %4x Accepted: %4x ",
+ REPORT_CODE_OFF + PL_regindent * 2, "", PL_colors[4],
+ state, base, accepted );
+ );
+
+ if ( base ) {
+
+ if ( do_utf8 || UTF ) {
+ if ( foldlen>0 ) {
+ uvc = utf8n_to_uvuni( uscan, UTF8_MAXLEN, &len, uniflags );
+ foldlen -= len;
+ uscan += len;
+ len=0;
+ } else {
+ uvc = utf8n_to_uvuni( (U8*)uc, UTF8_MAXLEN, &len, uniflags );
+ uvc = to_uni_fold( uvc, foldbuf, &foldlen );
+ foldlen -= UNISKIP( uvc );
+ uscan = foldbuf + UNISKIP( uvc );
+ }
+ } else {
+ uvc = (U32)*uc;
+ len = 1;
+ }
+
+ TRIE_HANDLE_CHAR;
+
+ } else {
+ state = 0;
+ }
+ DEBUG_TRIE_EXECUTE_r(
+ PerlIO_printf( Perl_debug_log,
+ "Charid:%3x CV:%4x After State: %4x%s\n",
+ charid, uvc, state, PL_colors[5] );
+ );
+ }
+ if ( !accepted ) {
+ sayNO;
+ } else {
+ goto TrieAccept;
+ }
+ }
+ /* unreached codepoint: we jump into the middle of the next case
+ from previous if blocks */
+ case TRIE:
+ {
+ U32 uniflags = ckWARN( WARN_UTF8 ) ? 0 : UTF8_ALLOW_ANY;
+ U8 *uc = (U8*)locinput;
+ U32 state = 1;
+ U16 charid = 0;
+ U32 base = 0;
+ UV uvc = 0;
+ STRLEN len = 0;
+ STRLEN bufflen = 0;
+ accepted = 0;
+
+ trie = (reg_trie_data*)PL_regdata->data[ ARG( scan ) ];
+
+ while ( state && uc <= (U8*)PL_regeol ) {
+
+ TRIE_CHECK_STATE_IS_ACCEPTING;
+
+ base = trie->states[ state ].trans.base;
+
+ DEBUG_TRIE_EXECUTE_r(
+ PerlIO_printf( Perl_debug_log,
+ "%*s %sState: %4x, Base: %4x Accepted: %4x ",
+ REPORT_CODE_OFF + PL_regindent * 2, "", PL_colors[4],
+ state, base, accepted );
+ );
+
+ if ( base ) {
+
+ if ( do_utf8 || UTF ) {
+ uvc = utf8n_to_uvuni( (U8*)uc, UTF8_MAXLEN, &len, uniflags );
+ } else {
+ uvc = (U32)*uc;
+ len = 1;
+ }
+
+ TRIE_HANDLE_CHAR;
+
+ } else {
+ state = 0;
+ }
+ DEBUG_TRIE_EXECUTE_r(
+ PerlIO_printf( Perl_debug_log,
+ "Charid:%3x CV:%4x After State: %4x%s\n",
+ charid, uvc, state, PL_colors[5] );
+ );
+ }
+ if ( !accepted ) {
+ sayNO;
+ }
+ }
+
+
+ /*
+ There was at least one accepting state that we
+ transitioned through. Presumably the number of accepting
+ states is going to be low, typically one or two. So we
+ simply scan through to find the one with lowest wordnum.
+ Once we find it, we swap the last state into its place
+ and decrement the size. We then try to match the rest of
+ the pattern at the point where the word ends, if we
+ succeed then we end the loop, otherwise the loop
+ eventually terminates once all of the accepting states
+ have been tried.
+ */
+ TrieAccept:
+ {
+ int gotit = 0;
+
+ if ( accepted == 1 ) {
+ DEBUG_EXECUTE_r({
+ SV **tmp = av_fetch( trie->words, accept_buff[ 0 ].wordnum-1, 0 );
+ PerlIO_printf( Perl_debug_log,
+ "%*s %sonly one match : #%d <%s>%s\n",
+ REPORT_CODE_OFF+PL_regindent*2, "",PL_colors[4],
+ accept_buff[ 0 ].wordnum,
+ tmp ? SvPV_nolen( *tmp ) : "not compiled under -Dr",
+ PL_colors[5] );
+ });
+ PL_reginput = (char *)accept_buff[ 0 ].endpos;
+ /* in this case we free tmps/leave before we call regmatch
+ as we wont be using accept_buff again. */
+ FREETMPS;
+ LEAVE;
+ gotit = regmatch( scan + NEXT_OFF( scan ) );
+ } else {
+ DEBUG_EXECUTE_r(
+ PerlIO_printf( Perl_debug_log,"%*s %sgot %d possible matches%s\n",
+ REPORT_CODE_OFF + PL_regindent * 2, "",PL_colors[4], accepted,
+ PL_colors[5] );
+ );
+ while ( !gotit && accepted-- ) {
+ U32 best = 0;
+ U32 cur;
+ for( cur = 1 ; cur <= accepted ; cur++ ) {
+ DEBUG_TRIE_EXECUTE_r(
+ PerlIO_printf( Perl_debug_log,
+ "%*s %sgot %d (%d) as best, looking at %d (%d)%s\n",
+ REPORT_CODE_OFF + PL_regindent * 2, "", PL_colors[4],
+ best, accept_buff[ best ].wordnum, cur,
+ accept_buff[ cur ].wordnum, PL_colors[5] );
+ );
+
+ if ( accept_buff[ cur ].wordnum < accept_buff[ best ].wordnum )
+ best = cur;
+ }
+ DEBUG_EXECUTE_r({
+ SV **tmp = av_fetch( trie->words, accept_buff[ best ].wordnum - 1, 0 );
+ PerlIO_printf( Perl_debug_log, "%*s %strying alternation #%d <%s> at 0x%p%s\n",
+ REPORT_CODE_OFF+PL_regindent*2, "",PL_colors[4],
+ accept_buff[best].wordnum,
+ tmp ? SvPV_nolen( *tmp ) : "not compiled under -Dr",scan,
+ PL_colors[5] );
+ });
+ if ( best<accepted ) {
+ reg_trie_accepted tmp = accept_buff[ best ];
+ accept_buff[ best ] = accept_buff[ accepted ];
+ accept_buff[ accepted ] = tmp;
+ best = accepted;
+ }
+ PL_reginput = (char *)accept_buff[ best ].endpos;
+
+ /*
+ as far as I can tell we only need the SAVETMPS/FREETMPS
+ for re's with EVAL in them but I'm leaving them in for
+ all until I can be sure.
+ */
+ SAVETMPS;
+ gotit = regmatch( scan + NEXT_OFF( scan ) ) ;
+ FREETMPS;
+ }
+ FREETMPS;
+ LEAVE;
+ }
+
+ if ( gotit ) {
+ sayYES;
+ } else {
+ sayNO;
+ }
+ }
+ /* unreached codepoint */
case EXACT:
s = STRING(scan);
ln = STR_LEN(scan);
- if (do_utf8 != (UTF!=0)) {
+ if (do_utf8 != UTF) {
/* The target and the pattern have differing utf8ness. */
char *l = locinput;
char *e = s + ln;
if (l >= PL_regeol)
sayNO;
if (NATIVE_TO_UNI(*(U8*)s) !=
- utf8_to_uvchr((U8*)l, &ulen))
+ utf8n_to_uvuni((U8*)l, UTF8_MAXBYTES, &ulen,
+ ckWARN(WARN_UTF8) ?
+ 0 : UTF8_ALLOW_ANY))
sayNO;
l += ulen;
s ++;
if (l >= PL_regeol)
sayNO;
if (NATIVE_TO_UNI(*((U8*)l)) !=
- utf8_to_uvchr((U8*)s, &ulen))
+ utf8n_to_uvuni((U8*)s, UTF8_MAXBYTES, &ulen,
+ ckWARN(WARN_UTF8) ?
+ 0 : UTF8_ALLOW_ANY))
sayNO;
s += ulen;
l ++;
char *l = locinput;
char *e = PL_regeol;
- if (ibcmp_utf8(s, 0, ln, do_utf8,
- l, &e, 0, UTF))
- sayNO;
+ if (ibcmp_utf8(s, 0, ln, (bool)UTF,
+ l, &e, 0, do_utf8)) {
+ /* One more case for the sharp s:
+ * pack("U0U*", 0xDF) =~ /ss/i,
+ * the 0xC3 0x9F are the UTF-8
+ * byte sequence for the U+00DF. */
+ if (!(do_utf8 &&
+ toLOWER(s[0]) == 's' &&
+ ln >= 2 &&
+ toLOWER(s[1]) == 's' &&
+ (U8)l[0] == 0xC3 &&
+ e - l >= 2 &&
+ (U8)l[1] == 0x9F))
+ sayNO;
+ }
locinput = e;
nextchr = UCHARAT(locinput);
break;
if (do_utf8) {
STRLEN inclasslen = PL_regeol - locinput;
- if (!reginclasslen(scan, (U8*)locinput, &inclasslen, do_utf8))
+ if (!reginclass(scan, (U8*)locinput, &inclasslen, do_utf8))
sayNO_ANYOF;
if (locinput >= PL_regeol)
sayNO;
- locinput += inclasslen;
+ locinput += inclasslen ? inclasslen : UTF8SKIP(locinput);
nextchr = UCHARAT(locinput);
break;
}
else {
if (nextchr < 0)
nextchr = UCHARAT(locinput);
- if (!reginclass(scan, (U8*)locinput, do_utf8))
+ if (!REGINCLASS(scan, (U8*)locinput))
sayNO_ANYOF;
if (!nextchr && locinput >= PL_regeol)
sayNO;
/* If we might have the case of the German sharp s
* in a casefolding Unicode character class. */
- if (ANYOF_UNICODE_FOLD_SHARP_S(scan, locinput, PL_regeol)) {
- locinput += 2;
+ if (ANYOF_FOLD_SHARP_S(scan, locinput, PL_regeol)) {
+ locinput += SHARP_S_SKIP;
nextchr = UCHARAT(locinput);
}
else
if (locinput == PL_bostr)
ln = '\n';
else {
- U8 *r = reghop((U8*)locinput, -1);
+ U8 *r = reghop3((U8*)locinput, -1, (U8*)PL_bostr);
- ln = utf8n_to_uvchr(r, s - (char*)r, 0, 0);
+ ln = utf8n_to_uvchr(r, UTF8SKIP(r), 0, 0);
}
if (OP(scan) == BOUND || OP(scan) == NBOUND) {
ln = isALNUM_uni(ln);
n = ARG(scan); /* which paren pair */
ln = PL_regstartp[n];
PL_reg_leftiter = PL_reg_maxiter; /* Void cache */
- if (*PL_reglastparen < n || ln == -1)
+ if ((I32)*PL_reglastparen < n || ln == -1)
sayNO; /* Do not match unless seen CLOSEn. */
if (ln == PL_regendp[n])
break;
*/
if (OP(scan) == REFF) {
STRLEN ulen1, ulen2;
- U8 tmpbuf1[UTF8_MAXLEN_UCLC+1];
- U8 tmpbuf2[UTF8_MAXLEN_UCLC+1];
+ U8 tmpbuf1[UTF8_MAXBYTES_CASE+1];
+ U8 tmpbuf2[UTF8_MAXBYTES_CASE+1];
while (s < e) {
if (l >= PL_regeol)
sayNO;
dSP;
OP_4tree *oop = PL_op;
COP *ocurcop = PL_curcop;
- SV **ocurpad = PL_curpad;
+ PAD *old_comppad;
SV *ret;
+ struct regexp *oreg = PL_reg_re;
n = ARG(scan);
PL_op = (OP_4tree*)PL_regdata->data[n];
- DEBUG_r( PerlIO_printf(Perl_debug_log, " re_eval 0x%"UVxf"\n", PTR2UV(PL_op)) );
- PL_curpad = AvARRAY((AV*)PL_regdata->data[n + 2]);
+ DEBUG_EXECUTE_r( PerlIO_printf(Perl_debug_log, " re_eval 0x%"UVxf"\n", PTR2UV(PL_op)) );
+ PAD_SAVE_LOCAL(old_comppad, (PAD*)PL_regdata->data[n + 2]);
PL_regendp[0] = PL_reg_magic->mg_len = locinput - PL_bostr;
{
CALLRUNOPS(aTHX); /* Scalar context. */
SPAGAIN;
if (SP == before)
- ret = Nullsv; /* protect against empty (?{}) blocks. */
+ ret = &PL_sv_undef; /* protect against empty (?{}) blocks. */
else {
ret = POPs;
PUTBACK;
}
PL_op = oop;
- PL_curpad = ocurpad;
+ PAD_RESTORE_LOCAL(old_comppad);
PL_curcop = ocurcop;
if (logical) {
if (logical == 2) { /* Postponed subexpression. */
MAGIC *mg = Null(MAGIC*);
re_cc_state state;
CHECKPOINT cp, lastcp;
-
- if(SvROK(ret) || SvRMAGICAL(ret)) {
- SV *sv = SvROK(ret) ? SvRV(ret) : ret;
-
- if(SvMAGICAL(sv))
- mg = mg_find(sv, PERL_MAGIC_qr);
+ int toggleutf;
+ register SV *sv;
+
+ if(SvROK(ret) && SvSMAGICAL(sv = SvRV(ret)))
+ mg = mg_find(sv, PERL_MAGIC_qr);
+ else if (SvSMAGICAL(ret)) {
+ if (SvGMAGICAL(ret))
+ sv_unmagic(ret, PERL_MAGIC_qr);
+ else
+ mg = mg_find(ret, PERL_MAGIC_qr);
}
+
if (mg) {
re = (regexp *)mg->mg_obj;
(void)ReREFCNT_inc(re);
I32 onpar = PL_regnpar;
Zero(&pm, 1, PMOP);
+ if (DO_UTF8(ret)) pm.op_pmdynflags |= PMdf_DYN_UTF8;
re = CALLREGCOMP(aTHX_ t, t + len, &pm);
if (!(SvFLAGS(ret)
- & (SVs_TEMP | SVs_PADTMP | SVf_READONLY)))
+ & (SVs_TEMP | SVs_PADTMP | SVf_READONLY
+ | SVs_GMG)))
sv_magic(ret,(SV*)ReREFCNT_inc(re),
PERL_MAGIC_qr,0,0);
PL_regprecomp = oprecomp;
PL_regsize = osize;
PL_regnpar = onpar;
}
- DEBUG_r(
+ DEBUG_EXECUTE_r(
PerlIO_printf(Perl_debug_log,
"Entering embedded `%s%.60s%s%s'\n",
PL_colors[0],
*PL_reglastcloseparen = 0;
PL_reg_call_cc = &state;
PL_reginput = locinput;
+ toggleutf = ((PL_reg_flags & RF_utf8) != 0) ^
+ ((re->reganch & ROPT_UTF8) != 0);
+ if (toggleutf) PL_reg_flags ^= RF_utf8;
/* XXXX This is too dramatic a measure... */
PL_reg_maxiter = 0;
PL_regcc = state.cc;
PL_reg_re = state.re;
cache_re(PL_reg_re);
+ if (toggleutf) PL_reg_flags ^= RF_utf8;
/* XXXX This is too dramatic a measure... */
PL_reg_maxiter = 0;
PL_regcc = state.cc;
PL_reg_re = state.re;
cache_re(PL_reg_re);
+ if (toggleutf) PL_reg_flags ^= RF_utf8;
/* XXXX This is too dramatic a measure... */
PL_reg_maxiter = 0;
sw = SvTRUE(ret);
logical = 0;
}
- else
+ else {
sv_setsv(save_scalar(PL_replgv), ret);
+ cache_re(oreg);
+ }
break;
}
case OPEN:
n = ARG(scan); /* which paren pair */
PL_regstartp[n] = PL_reg_start_tmp[n] - PL_bostr;
PL_regendp[n] = locinput - PL_bostr;
- if (n > *PL_reglastparen)
+ if (n > (I32)*PL_reglastparen)
*PL_reglastparen = n;
*PL_reglastcloseparen = n;
break;
case GROUPP:
n = ARG(scan); /* which paren pair */
- sw = (*PL_reglastparen >= n && PL_regendp[n] != -1);
+ sw = ((I32)*PL_reglastparen >= n && PL_regendp[n] != -1);
break;
case IFTHEN:
PL_reg_leftiter = PL_reg_maxiter; /* Void cache */
PL_regcc = &cc;
/* XXXX Probably it is better to teach regpush to support
parenfloor > PL_regsize... */
- if (parenfloor > *PL_reglastparen)
+ if (parenfloor > (I32)*PL_reglastparen)
parenfloor = *PL_reglastparen; /* Pessimization... */
cc.parenfloor = parenfloor;
cc.cur = -1;
n = cc->cur + 1; /* how many we know we matched */
PL_reginput = locinput;
- DEBUG_r(
+ DEBUG_EXECUTE_r(
PerlIO_printf(Perl_debug_log,
- "%*s %ld out of %ld..%ld cc=%lx\n",
+ "%*s %ld out of %ld..%ld cc=%"UVxf"\n",
REPORT_CODE_OFF+PL_regindent*2, "",
(long)n, (long)cc->min,
- (long)cc->max, (long)cc)
+ (long)cc->max, PTR2UV(cc))
);
/* If degenerate scan matches "", assume scan done. */
PL_regcc = cc->oldcc;
if (PL_regcc)
ln = PL_regcc->cur;
- DEBUG_r(
+ DEBUG_EXECUTE_r(
PerlIO_printf(Perl_debug_log,
"%*s empty match detected, try continuation...\n",
REPORT_CODE_OFF+PL_regindent*2, "")
PL_reg_leftiter = PL_reg_maxiter;
}
if (PL_reg_leftiter-- == 0) {
- I32 size = (PL_reg_maxiter + 7)/8;
+ I32 size = (PL_reg_maxiter + 7 + POSCACHE_START)/8;
if (PL_reg_poscache) {
- if (PL_reg_poscache_size < size) {
+ if ((I32)PL_reg_poscache_size < size) {
Renew(PL_reg_poscache, size, char);
PL_reg_poscache_size = size;
}
PL_reg_poscache_size = size;
Newz(29, PL_reg_poscache, size, char);
}
- DEBUG_r(
+ DEBUG_EXECUTE_r(
PerlIO_printf(Perl_debug_log,
"%sDetected a super-linear match, switching on caching%s...\n",
PL_colors[4], PL_colors[5])
if (PL_reg_leftiter < 0) {
I32 o = locinput - PL_bostr, b;
- o = (scan->flags & 0xf) - 1 + o * (scan->flags>>4);
+ o = (scan->flags & 0xf) - 1 + POSCACHE_START + o * (scan->flags>>4);
b = o % 8;
o /= 8;
if (PL_reg_poscache[o] & (1<<b)) {
- DEBUG_r(
+ DEBUG_EXECUTE_r(
PerlIO_printf(Perl_debug_log,
"%*s already tried at this position...\n",
REPORT_CODE_OFF+PL_regindent*2, "")
);
- sayNO_SILENT;
+ if (PL_reg_poscache[0] & (1<<POSCACHE_SUCCESS))
+ /* cache records success */
+ sayYES;
+ else
+ /* cache records failure */
+ sayNO_SILENT;
}
PL_reg_poscache[o] |= (1<<b);
}
REGCP_SET(lastcp);
if (regmatch(cc->next)) {
regcpblow(cp);
- sayYES; /* All done. */
+ CACHEsayYES; /* All done. */
}
REGCP_UNWIND(lastcp);
regcppop();
if (ckWARN(WARN_REGEXP) && n >= REG_INFTY
&& !(PL_reg_flags & RF_warned)) {
PL_reg_flags |= RF_warned;
- Perl_warner(aTHX_ WARN_REGEXP, "%s limit (%d) exceeded",
+ Perl_warner(aTHX_ packWARN(WARN_REGEXP), "%s limit (%d) exceeded",
"Complex regular subexpression recursion",
REG_INFTY - 1);
}
- sayNO;
+ CACHEsayNO;
}
- DEBUG_r(
+ DEBUG_EXECUTE_r(
PerlIO_printf(Perl_debug_log,
"%*s trying longer...\n",
REPORT_CODE_OFF+PL_regindent*2, "")
REGCP_SET(lastcp);
if (regmatch(cc->scan)) {
regcpblow(cp);
- sayYES;
+ CACHEsayYES;
}
REGCP_UNWIND(lastcp);
regcppop();
cc->cur = n - 1;
cc->lastloc = lastloc;
- sayNO;
+ CACHEsayNO;
}
/* Prefer scan over next for maximal matching. */
REGCP_SET(lastcp);
if (regmatch(cc->scan)) {
regcpblow(cp);
- sayYES;
+ CACHEsayYES;
}
REGCP_UNWIND(lastcp);
regcppop(); /* Restore some previous $<digit>s? */
PL_reginput = locinput;
- DEBUG_r(
+ DEBUG_EXECUTE_r(
PerlIO_printf(Perl_debug_log,
"%*s failed, try continuation...\n",
REPORT_CODE_OFF+PL_regindent*2, "")
if (ckWARN(WARN_REGEXP) && n >= REG_INFTY
&& !(PL_reg_flags & RF_warned)) {
PL_reg_flags |= RF_warned;
- Perl_warner(aTHX_ WARN_REGEXP, "%s limit (%d) exceeded",
+ Perl_warner(aTHX_ packWARN(WARN_REGEXP), "%s limit (%d) exceeded",
"Complex regular subexpression recursion",
REG_INFTY - 1);
}
if (PL_regcc)
ln = PL_regcc->cur;
if (regmatch(cc->next))
- sayYES;
+ CACHEsayYES;
if (PL_regcc)
PL_regcc->cur = ln;
PL_regcc = cc;
cc->cur = n - 1;
cc->lastloc = lastloc;
- sayNO;
+ CACHEsayNO;
}
/* NOT REACHED */
case BRANCHJ:
CHECKPOINT lastcp;
/* We suppose that the next guy does not need
- backtracking: in particular, it is of constant length,
+ backtracking: in particular, it is of constant non-zero length,
and has no parenths to influence future backrefs. */
ln = ARG1(scan); /* min to match */
n = ARG2(scan); /* max to match */
if (paren) {
if (paren > PL_regsize)
PL_regsize = paren;
- if (paren > *PL_reglastparen)
+ if (paren > (I32)*PL_reglastparen)
*PL_reglastparen = paren;
}
scan = NEXTOPER(scan) + NODE_STEP_REGNODE;
minmod = 0;
if (ln && regrepeat_hard(scan, ln, &l) < ln)
sayNO;
- /* if we matched something zero-length we don't need to
- backtrack - capturing parens are already defined, so
- the caveat in the maximal case doesn't apply
-
- XXXX if ln == 0, we can redo this check first time
- through the following loop
- */
- if (ln && l == 0)
- n = ln; /* don't backtrack */
locinput = PL_reginput;
if (HAS_TEXT(next) || JUMPABLE(next)) {
regnode *text_node = next;
if (! HAS_TEXT(text_node)) c1 = c2 = -1000;
else {
if (PL_regkind[(U8)OP(text_node)] == REF) {
- I32 n, ln;
- n = ARG(text_node); /* which paren pair */
- ln = PL_regstartp[n];
- /* assume yes if we haven't seen CLOSEn */
- if (
- *PL_reglastparen < n ||
- ln == -1 ||
- ln == PL_regendp[n]
- ) {
- c1 = c2 = -1000;
- goto assume_ok_MM;
- }
- c1 = *(PL_bostr + ln);
+ c1 = c2 = -1000;
+ goto assume_ok_MM;
}
else { c1 = (U8)*STRING(text_node); }
if (OP(text_node) == EXACTF || OP(text_node) == REFF)
c1 = c2 = -1000;
assume_ok_MM:
REGCP_SET(lastcp);
- /* This may be improved if l == 0. */
- while (n >= ln || (n == REG_INFTY && ln > 0 && l)) { /* ln overflow ? */
+ while (n >= ln || (n == REG_INFTY && ln > 0)) { /* ln overflow ? */
/* If it could work, try it. */
if (c1 == -1000 ||
UCHARAT(PL_reginput) == c1 ||
}
else {
n = regrepeat_hard(scan, n, &l);
- /* if we matched something zero-length we don't need to
- backtrack, unless the minimum count is zero and we
- are capturing the result - in that case the capture
- being defined or not may affect later execution
- */
- if (n != 0 && l == 0 && !(paren && ln == 0))
- ln = n; /* don't backtrack */
locinput = PL_reginput;
- DEBUG_r(
+ DEBUG_EXECUTE_r(
PerlIO_printf(Perl_debug_log,
"%*s matched %"IVdf" times, len=%"IVdf"...\n",
(int)(REPORT_CODE_OFF+PL_regindent*2), "",
if (! HAS_TEXT(text_node)) c1 = c2 = -1000;
else {
if (PL_regkind[(U8)OP(text_node)] == REF) {
- I32 n, ln;
- n = ARG(text_node); /* which paren pair */
- ln = PL_regstartp[n];
- /* assume yes if we haven't seen CLOSEn */
- if (
- *PL_reglastparen < n ||
- ln == -1 ||
- ln == PL_regendp[n]
- ) {
- c1 = c2 = -1000;
- goto assume_ok_REG;
- }
- c1 = *(PL_bostr + ln);
+ c1 = c2 = -1000;
+ goto assume_ok_REG;
}
else { c1 = (U8)*STRING(text_node); }
UCHARAT(PL_reginput) == c1 ||
UCHARAT(PL_reginput) == c2)
{
- DEBUG_r(
+ DEBUG_EXECUTE_r(
PerlIO_printf(Perl_debug_log,
"%*s trying tail with n=%"IVdf"...\n",
(int)(REPORT_CODE_OFF+PL_regindent*2), "", (IV)n)
paren = scan->flags; /* Which paren to set */
if (paren > PL_regsize)
PL_regsize = paren;
- if (paren > *PL_reglastparen)
+ if (paren > (I32)*PL_reglastparen)
*PL_reglastparen = paren;
ln = ARG1(scan); /* min to match */
n = ARG2(scan); /* max to match */
if (! HAS_TEXT(text_node)) c1 = c2 = -1000;
else {
if (PL_regkind[(U8)OP(text_node)] == REF) {
- I32 n, ln;
- n = ARG(text_node); /* which paren pair */
- ln = PL_regstartp[n];
- /* assume yes if we haven't seen CLOSEn */
- if (
- *PL_reglastparen < n ||
- ln == -1 ||
- ln == PL_regendp[n]
- ) {
- c1 = c2 = -1000;
- goto assume_ok_easy;
- }
- s = (U8*)PL_bostr + ln;
+ c1 = c2 = -1000;
+ goto assume_ok_easy;
}
else { s = (U8*)STRING(text_node); }
else { /* UTF */
if (OP(text_node) == EXACTF || OP(text_node) == REFF) {
STRLEN ulen1, ulen2;
- U8 tmpbuf1[UTF8_MAXLEN_UCLC+1];
- U8 tmpbuf2[UTF8_MAXLEN_UCLC+1];
+ U8 tmpbuf1[UTF8_MAXBYTES_CASE+1];
+ U8 tmpbuf2[UTF8_MAXBYTES_CASE+1];
to_utf8_lower((U8*)s, tmpbuf1, &ulen1);
to_utf8_upper((U8*)s, tmpbuf2, &ulen2);
- c1 = utf8_to_uvuni(tmpbuf1, 0);
- c2 = utf8_to_uvuni(tmpbuf2, 0);
+ c1 = utf8n_to_uvuni(tmpbuf1, UTF8_MAXBYTES, 0,
+ ckWARN(WARN_UTF8) ?
+ 0 : UTF8_ALLOW_ANY);
+ c2 = utf8n_to_uvuni(tmpbuf2, UTF8_MAXBYTES, 0,
+ ckWARN(WARN_UTF8) ?
+ 0 : UTF8_ALLOW_ANY);
}
else {
- c2 = c1 = utf8_to_uvchr(s, NULL);
+ c2 = c1 = utf8n_to_uvchr(s, UTF8_MAXBYTES, 0,
+ ckWARN(WARN_UTF8) ?
+ 0 : UTF8_ALLOW_ANY);
}
}
}
if (c1 != -1000) {
char *e; /* Should not check after this */
char *old = locinput;
+ int count = 0;
if (n == REG_INFTY) {
e = PL_regeol - 1;
e = PL_regeol - 1;
}
while (1) {
- int count;
/* Find place 'next' could work */
if (!do_utf8) {
if (c1 == c2) {
else {
STRLEN len;
if (c1 == c2) {
- for (count = 0;
- locinput <= e &&
- utf8_to_uvchr((U8*)locinput, &len) != c1;
- count++)
+ /* count initialised to
+ * utf8_distance(old, locinput) */
+ while (locinput <= e &&
+ utf8n_to_uvchr((U8*)locinput,
+ UTF8_MAXBYTES, &len,
+ ckWARN(WARN_UTF8) ?
+ 0 : UTF8_ALLOW_ANY) != (UV)c1) {
locinput += len;
-
+ count++;
+ }
} else {
- for (count = 0; locinput <= e; count++) {
- UV c = utf8_to_uvchr((U8*)locinput, &len);
- if (c == c1 || c == c2)
+ /* count initialised to
+ * utf8_distance(old, locinput) */
+ while (locinput <= e) {
+ UV c = utf8n_to_uvchr((U8*)locinput,
+ UTF8_MAXBYTES, &len,
+ ckWARN(WARN_UTF8) ?
+ 0 : UTF8_ALLOW_ANY);
+ if (c == (UV)c1 || c == (UV)c2)
break;
- locinput += len;
+ locinput += len;
+ count++;
}
}
}
locinput += UTF8SKIP(locinput);
else
locinput++;
+ count = 1;
}
}
else
UV c;
if (c1 != -1000) {
if (do_utf8)
- c = utf8_to_uvchr((U8*)PL_reginput, NULL);
+ c = utf8n_to_uvchr((U8*)PL_reginput,
+ UTF8_MAXBYTES, 0,
+ ckWARN(WARN_UTF8) ?
+ 0 : UTF8_ALLOW_ANY);
else
c = UCHARAT(PL_reginput);
/* If it could work, try it. */
- if (c == c1 || c == c2)
+ if (c == (UV)c1 || c == (UV)c2)
{
- TRYPAREN(paren, n, PL_reginput);
+ TRYPAREN(paren, ln, PL_reginput);
REGCP_UNWIND(lastcp);
}
}
/* If it could work, try it. */
else if (c1 == -1000)
{
- TRYPAREN(paren, n, PL_reginput);
+ TRYPAREN(paren, ln, PL_reginput);
REGCP_UNWIND(lastcp);
}
/* Couldn't or didn't -- move forward. */
n = regrepeat(scan, n);
locinput = PL_reginput;
if (ln < n && PL_regkind[(U8)OP(next)] == EOL &&
- ((!PL_multiline && OP(next) != MEOL) ||
+ (OP(next) != MEOL ||
OP(next) == SEOL || OP(next) == EOS))
{
ln = n; /* why back off? */
while (n >= ln) {
if (c1 != -1000) {
if (do_utf8)
- c = utf8_to_uvchr((U8*)PL_reginput, NULL);
+ c = utf8n_to_uvchr((U8*)PL_reginput,
+ UTF8_MAXBYTES, 0,
+ ckWARN(WARN_UTF8) ?
+ 0 : UTF8_ALLOW_ANY);
else
c = UCHARAT(PL_reginput);
}
/* If it could work, try it. */
- if (c1 == -1000 || c == c1 || c == c2)
+ if (c1 == -1000 || c == (UV)c1 || c == (UV)c2)
{
TRYPAREN(paren, n, PL_reginput);
REGCP_UNWIND(lastcp);
while (n >= ln) {
if (c1 != -1000) {
if (do_utf8)
- c = utf8_to_uvchr((U8*)PL_reginput, NULL);
+ c = utf8n_to_uvchr((U8*)PL_reginput,
+ UTF8_MAXBYTES, 0,
+ ckWARN(WARN_UTF8) ?
+ 0 : UTF8_ALLOW_ANY);
else
c = UCHARAT(PL_reginput);
}
/* If it could work, try it. */
- if (c1 == -1000 || c == c1 || c == c2)
+ if (c1 == -1000 || c == (UV)c1 || c == (UV)c2)
{
TRYPAREN(paren, n, PL_reginput);
REGCP_UNWIND(lastcp);
PL_reg_re = re;
cache_re(re);
- DEBUG_r(
+ DEBUG_EXECUTE_r(
PerlIO_printf(Perl_debug_log,
"%*s continuation failed...\n",
REPORT_CODE_OFF+PL_regindent*2, "")
sayNO_SILENT;
}
if (locinput < PL_regtill) {
- DEBUG_r(PerlIO_printf(Perl_debug_log,
+ DEBUG_EXECUTE_r(PerlIO_printf(Perl_debug_log,
"%sMatch possible, but length=%ld is smaller than requested=%ld, failing!%s\n",
PL_colors[4],
(long)(locinput - PL_reg_starttry),
sayNO;
yes_loud:
- DEBUG_r(
+ DEBUG_EXECUTE_r(
PerlIO_printf(Perl_debug_log,
"%*s %scould match...%s\n",
REPORT_CODE_OFF+PL_regindent*2, "", PL_colors[4],PL_colors[5])
);
goto yes;
yes_final:
- DEBUG_r(PerlIO_printf(Perl_debug_log, "%sMatch successful!%s\n",
+ DEBUG_EXECUTE_r(PerlIO_printf(Perl_debug_log, "%sMatch successful!%s\n",
PL_colors[4],PL_colors[5]));
yes:
#ifdef DEBUGGING
return 1;
no:
- DEBUG_r(
+ DEBUG_EXECUTE_r(
PerlIO_printf(Perl_debug_log,
"%*s %sfailed...%s\n",
REPORT_CODE_OFF+PL_regindent*2, "",PL_colors[4],PL_colors[5])
register bool do_utf8 = PL_reg_match_utf8;
scan = PL_reginput;
- if (max != REG_INFTY && max < loceol - scan)
+ if (max == REG_INFTY)
+ max = I32_MAX;
+ else if (max < loceol - scan)
loceol = scan + max;
switch (OP(p)) {
case REG_ANY:
if (do_utf8) {
loceol = PL_regeol;
while (hardcount < max && scan < loceol &&
- reginclass(p, (U8*)scan, do_utf8)) {
+ reginclass(p, (U8*)scan, 0, do_utf8)) {
scan += UTF8SKIP(scan);
hardcount++;
}
} else {
- while (scan < loceol && reginclass(p, (U8*)scan, do_utf8))
+ while (scan < loceol && REGINCLASS(p, (U8*)scan))
scan++;
}
break;
c = scan - PL_reginput;
PL_reginput = scan;
- DEBUG_r(
- {
+ DEBUG_r({
+ SV *re_debug_flags;
SV *prop = sv_newmortal();
-
+ GET_RE_DEBUG_FLAGS;
+ DEBUG_EXECUTE_r({
regprop(prop, p);
PerlIO_printf(Perl_debug_log,
"%*s %s can match %"IVdf" times out of %"IVdf"...\n",
REPORT_CODE_OFF+1, "", SvPVX(prop),(IV)c,(IV)max);
});
+ });
return(c);
}
/*
- regrepeat_hard - repeatedly match something, report total lenth and length
*
- * The repeater is supposed to have constant length.
+ * The repeater is supposed to have constant non-zero length.
*/
STATIC I32
if (PL_regdata->what[n] == 's') {
SV *rv = (SV*)PL_regdata->data[n];
AV *av = (AV*)SvRV((SV*)rv);
+ SV **ary = AvARRAY(av);
SV **a, **b;
/* See the end of regcomp.c:S_reglass() for
* documentation of these array elements. */
- si = *av_fetch(av, 0, FALSE);
- a = av_fetch(av, 1, FALSE);
- b = av_fetch(av, 2, FALSE);
-
+ si = *ary;
+ a = SvTYPE(ary[1]) == SVt_RV ? &ary[1] : 0;
+ b = SvTYPE(ary[2]) == SVt_PVAV ? &ary[2] : 0;
+
if (a)
sw = *a;
else if (si && doinit) {
}
/*
- - reginclasslen - determine if a character falls into a character class
+ - reginclass - determine if a character falls into a character class
The n is the ANYOF regnode, the p is the target string, lenp
is pointer to the maximum length of how far to go in the p
*/
STATIC bool
-S_reginclasslen(pTHX_ register regnode *n, register U8* p, STRLEN* lenp, register bool do_utf8)
+S_reginclass(pTHX_ register regnode *n, register U8* p, STRLEN* lenp, register bool do_utf8)
{
char flags = ANYOF_FLAGS(n);
bool match = FALSE;
- UV c;
+ UV c = *p;
STRLEN len = 0;
STRLEN plen;
- c = do_utf8 ? utf8_to_uvchr(p, &len) : *p;
+ if (do_utf8 && !UTF8_IS_INVARIANT(c))
+ c = utf8n_to_uvchr(p, UTF8_MAXBYTES, &len,
+ ckWARN(WARN_UTF8) ? 0 : UTF8_ALLOW_ANY);
- plen = lenp ? *lenp : UNISKIP(c);
+ plen = lenp ? *lenp : UNISKIP(NATIVE_TO_UNI(c));
if (do_utf8 || (flags & ANYOF_UNICODE)) {
if (lenp)
*lenp = 0;
if (swash_fetch(sw, p, do_utf8))
match = TRUE;
else if (flags & ANYOF_FOLD) {
- U8 tmpbuf[UTF8_MAXLEN_FOLD+1];
- STRLEN tmplen;
-
if (!match && lenp && av) {
I32 i;
STRLEN len;
char *s = SvPV(sv, len);
- if (len <= plen && memEQ(s, p, len)) {
+ if (len <= plen && memEQ(s, (char*)p, len)) {
*lenp = len;
match = TRUE;
break;
}
}
if (!match) {
+ U8 tmpbuf[UTF8_MAXBYTES_CASE+1];
+ STRLEN tmplen;
+
to_utf8_fold(p, tmpbuf, &tmplen);
if (swash_fetch(sw, tmpbuf, do_utf8))
match = TRUE;
}
- if (!match) {
- to_utf8_upper(p, tmpbuf, &tmplen);
- if (swash_fetch(sw, tmpbuf, do_utf8))
- match = TRUE;
- }
}
}
}
if (match && lenp && *lenp == 0)
- *lenp = UNISKIP(c);
+ *lenp = UNISKIP(NATIVE_TO_UNI(c));
}
if (!match && c < 256) {
if (ANYOF_BITMAP_TEST(n, c))
match = TRUE;
else if (flags & ANYOF_FOLD) {
- I32 f;
+ U8 f;
if (flags & ANYOF_LOCALE) {
PL_reg_flags |= RF_tainted;
return (flags & ANYOF_INVERT) ? !match : match;
}
-/*
- - reginclass - determine if a character falls into a character class
-
- The n is the ANYOF regnode, the p is the target string, do_utf8 tells
- whether the target string is in UTF-8.
-
- */
-
-STATIC bool
-S_reginclass(pTHX_ register regnode *n, register U8* p, register bool do_utf8)
-{
- return S_reginclasslen(aTHX_ n, p, 0, do_utf8);
-}
-
STATIC U8 *
S_reghop(pTHX_ U8 *s, I32 off)
{
if (PL_reg_oldsaved) {
PL_reg_re->subbeg = PL_reg_oldsaved;
PL_reg_re->sublen = PL_reg_oldsavedlen;
+#ifdef PERL_COPY_ON_WRITE
+ PL_reg_re->saved_copy = PL_nrs;
+#endif
RX_MATCH_COPIED_on(PL_reg_re);
}
PL_reg_magic->mg_len = PL_reg_oldpos;
PL_curpm = PL_reg_oldcurpm;
}
}
+
+STATIC void
+S_to_utf8_substr(pTHX_ register regexp *prog)
+{
+ SV* sv;
+ if (prog->float_substr && !prog->float_utf8) {
+ prog->float_utf8 = sv = newSVsv(prog->float_substr);
+ sv_utf8_upgrade(sv);
+ if (SvTAIL(prog->float_substr))
+ SvTAIL_on(sv);
+ if (prog->float_substr == prog->check_substr)
+ prog->check_utf8 = sv;
+ }
+ if (prog->anchored_substr && !prog->anchored_utf8) {
+ prog->anchored_utf8 = sv = newSVsv(prog->anchored_substr);
+ sv_utf8_upgrade(sv);
+ if (SvTAIL(prog->anchored_substr))
+ SvTAIL_on(sv);
+ if (prog->anchored_substr == prog->check_substr)
+ prog->check_utf8 = sv;
+ }
+}
+
+STATIC void
+S_to_byte_substr(pTHX_ register regexp *prog)
+{
+ SV* sv;
+ if (prog->float_utf8 && !prog->float_substr) {
+ prog->float_substr = sv = newSVsv(prog->float_utf8);
+ if (sv_utf8_downgrade(sv, TRUE)) {
+ if (SvTAIL(prog->float_utf8))
+ SvTAIL_on(sv);
+ } else {
+ SvREFCNT_dec(sv);
+ prog->float_substr = sv = &PL_sv_undef;
+ }
+ if (prog->float_utf8 == prog->check_utf8)
+ prog->check_substr = sv;
+ }
+ if (prog->anchored_utf8 && !prog->anchored_substr) {
+ prog->anchored_substr = sv = newSVsv(prog->anchored_utf8);
+ if (sv_utf8_downgrade(sv, TRUE)) {
+ if (SvTAIL(prog->anchored_utf8))
+ SvTAIL_on(sv);
+ } else {
+ SvREFCNT_dec(sv);
+ prog->anchored_substr = sv = &PL_sv_undef;
+ }
+ if (prog->anchored_utf8 == prog->check_utf8)
+ prog->check_substr = sv;
+ }
+}
https://perl5.git.perl.org / perl5.git / blobdiff