= "Can't match, because target string needs to be in UTF-8\n";
#endif
-#define NON_UTF8_TARGET_BUT_UTF8_REQUIRED(target) STMT_START { \
- DEBUG_EXECUTE_r(PerlIO_printf(Perl_debug_log, "%s", non_utf8_target_but_utf8_required));\
- goto target; \
+#define NON_UTF8_TARGET_BUT_UTF8_REQUIRED(target) STMT_START { \
+ DEBUG_EXECUTE_r(Perl_re_printf( aTHX_ "%s", non_utf8_target_but_utf8_required));\
+ goto target; \
} STMT_END
#define HAS_NONLATIN1_FOLD_CLOSURE(i) _HAS_NONLATIN1_FOLD_CLOSURE_ONLY_FOR_USE_BY_REGCOMP_DOT_C_AND_REGEXEC_DOT_C(i)
#define STATIC static
#endif
-/* Valid only for non-utf8 strings: avoids the reginclass
- * call if there are no complications: i.e., if everything matchable is
- * straight forward in the bitmap */
-#define REGINCLASS(prog,p,c) (ANYOF_FLAGS(p) ? reginclass(prog,p,c,c+1,0) \
- : ANYOF_BITMAP_TEST(p,*(c)))
+/* Valid only if 'c', the character being looke-up, is an invariant under
+ * UTF-8: it avoids the reginclass call if there are no complications: i.e., if
+ * everything matchable is straight forward in the bitmap */
+#define REGINCLASS(prog,p,c,u) (ANYOF_FLAGS(p) \
+ ? reginclass(prog,p,c,c+1,u) \
+ : ANYOF_BITMAP_TEST(p,*(c)))
/*
* Forwards.
*/
#define CHR_SVLEN(sv) (utf8_target ? sv_len_utf8(sv) : SvCUR(sv))
-#define CHR_DIST(a,b) (reginfo->is_utf8_target ? utf8_distance(a,b) : a - b)
#define HOPc(pos,off) \
(char *)(reginfo->is_utf8_target \
(U8*)(off >= 0 ? reginfo->strend : reginfo->strbeg)) \
: (U8*)(pos + off))
-#define HOPBACKc(pos, off) \
- (char*)(reginfo->is_utf8_target \
- ? reghopmaybe3((U8*)pos, -off, (U8*)(reginfo->strbeg)) \
- : (pos - off >= reginfo->strbeg) \
- ? (U8*)pos - off \
+/* like HOPMAYBE3 but backwards. lim must be +ve. Returns NULL on overshoot */
+#define HOPBACK3(pos, off, lim) \
+ (reginfo->is_utf8_target \
+ ? reghopmaybe3((U8*)pos, (SSize_t)0-off, (U8*)(lim)) \
+ : (pos - off >= lim) \
+ ? (U8*)pos - off \
: NULL)
+#define HOPBACKc(pos, off) ((char*)HOPBACK3(pos, off, reginfo->strbeg))
+
#define HOP3(pos,off,lim) (reginfo->is_utf8_target ? reghop3((U8*)(pos), off, (U8*)(lim)) : (U8*)(pos + off))
#define HOP3c(pos,off,lim) ((char*)HOP3(pos,off,lim))
#define HOP3lim(pos,off,lim) (reginfo->is_utf8_target \
? reghop3((U8*)(pos), off, (U8*)(lim)) \
: (U8*)((pos + off) > lim ? lim : (pos + off)))
+#define HOP3clim(pos,off,lim) ((char*)HOP3lim(pos,off,lim))
#define HOP4(pos,off,llim, rlim) (reginfo->is_utf8_target \
? reghop4((U8*)(pos), off, (U8*)(llim), (U8*)(rlim)) \
*/
#define JUMPABLE(rn) ( \
OP(rn) == OPEN || \
- (OP(rn) == CLOSE && (!cur_eval || cur_eval->u.eval.close_paren != ARG(rn))) || \
+ (OP(rn) == CLOSE && \
+ !EVAL_CLOSE_PAREN_IS(cur_eval,ARG(rn)) ) || \
OP(rn) == EVAL || \
OP(rn) == SUSPEND || OP(rn) == IFMATCH || \
OP(rn) == PLUS || OP(rn) == MINMOD || \
* are needed for the regexp context stack bookkeeping. */
STATIC CHECKPOINT
-S_regcppush(pTHX_ const regexp *rex, I32 parenfloor, U32 maxopenparen)
+S_regcppush(pTHX_ const regexp *rex, I32 parenfloor, U32 maxopenparen _pDEPTH)
{
const int retval = PL_savestack_ix;
const int paren_elems_to_push =
(int)parenfloor, (unsigned)REGCP_PAREN_ELEMS);
if ((elems_shifted >> SAVE_TIGHT_SHIFT) != total_elems)
- Perl_croak(aTHX_ "panic: paren_elems_to_push offset %"UVuf
+ Perl_croak(aTHX_ "panic: paren_elems_to_push offset %" UVuf
" out of range (%lu-%ld)",
total_elems,
(unsigned long)maxopenparen,
DEBUG_BUFFERS_r(
if ((int)maxopenparen > (int)parenfloor)
- PerlIO_printf(Perl_debug_log,
- "rex=0x%"UVxf" offs=0x%"UVxf": saving capture indices:\n",
- PTR2UV(rex),
+ Perl_re_exec_indentf( aTHX_
+ "rex=0x%" UVxf " offs=0x%" UVxf ": saving capture indices:\n",
+ depth,
+ PTR2UV(rex),
PTR2UV(rex->offs)
);
);
SSPUSHIV(rex->offs[p].end);
SSPUSHIV(rex->offs[p].start);
SSPUSHINT(rex->offs[p].start_tmp);
- DEBUG_BUFFERS_r(PerlIO_printf(Perl_debug_log,
- " \\%"UVuf": %"IVdf"(%"IVdf")..%"IVdf"\n",
- (UV)p,
+ DEBUG_BUFFERS_r(Perl_re_exec_indentf( aTHX_
+ " \\%" UVuf ": %" IVdf "(%" IVdf ")..%" IVdf "\n",
+ depth,
+ (UV)p,
(IV)rex->offs[p].start,
(IV)rex->offs[p].start_tmp,
(IV)rex->offs[p].end
/* These are needed since we do not localize EVAL nodes: */
#define REGCP_SET(cp) \
DEBUG_STATE_r( \
- PerlIO_printf(Perl_debug_log, \
- " Setting an EVAL scope, savestack=%"IVdf"\n", \
- (IV)PL_savestack_ix)); \
+ Perl_re_exec_indentf( aTHX_ \
+ "Setting an EVAL scope, savestack=%" IVdf ",\n", \
+ depth, (IV)PL_savestack_ix \
+ ) \
+ ); \
cp = PL_savestack_ix
#define REGCP_UNWIND(cp) \
DEBUG_STATE_r( \
- if (cp != PL_savestack_ix) \
- PerlIO_printf(Perl_debug_log, \
- " Clearing an EVAL scope, savestack=%"IVdf"..%"IVdf"\n", \
- (IV)(cp), (IV)PL_savestack_ix)); \
+ if (cp != PL_savestack_ix) \
+ Perl_re_exec_indentf( aTHX_ \
+ "Clearing an EVAL scope, savestack=%" \
+ IVdf "..%" IVdf "\n", \
+ depth, (IV)(cp), (IV)PL_savestack_ix \
+ ) \
+ ); \
regcpblow(cp)
#define UNWIND_PAREN(lp, lcp) \
STATIC void
-S_regcppop(pTHX_ regexp *rex, U32 *maxopenparen_p)
+S_regcppop(pTHX_ regexp *rex, U32 *maxopenparen_p _pDEPTH)
{
UV i;
U32 paren;
/* Now restore the parentheses context. */
DEBUG_BUFFERS_r(
if (i || rex->lastparen + 1 <= rex->nparens)
- PerlIO_printf(Perl_debug_log,
- "rex=0x%"UVxf" offs=0x%"UVxf": restoring capture indices to:\n",
- PTR2UV(rex),
+ Perl_re_exec_indentf( aTHX_
+ "rex=0x%" UVxf " offs=0x%" UVxf ": restoring capture indices to:\n",
+ depth,
+ PTR2UV(rex),
PTR2UV(rex->offs)
);
);
tmps = SSPOPIV;
if (paren <= rex->lastparen)
rex->offs[paren].end = tmps;
- DEBUG_BUFFERS_r( PerlIO_printf(Perl_debug_log,
- " \\%"UVuf": %"IVdf"(%"IVdf")..%"IVdf"%s\n",
- (UV)paren,
+ DEBUG_BUFFERS_r( Perl_re_exec_indentf( aTHX_
+ " \\%" UVuf ": %" IVdf "(%" IVdf ")..%" IVdf "%s\n",
+ depth,
+ (UV)paren,
(IV)rex->offs[paren].start,
(IV)rex->offs[paren].start_tmp,
(IV)rex->offs[paren].end,
if (i > *maxopenparen_p)
rex->offs[i].start = -1;
rex->offs[i].end = -1;
- DEBUG_BUFFERS_r( PerlIO_printf(Perl_debug_log,
- " \\%"UVuf": %s ..-1 undeffing\n",
- (UV)i,
+ DEBUG_BUFFERS_r( Perl_re_exec_indentf( aTHX_
+ " \\%" UVuf ": %s ..-1 undeffing\n",
+ depth,
+ (UV)i,
(i > *maxopenparen_p) ? "-1" : " "
));
}
* but without popping the stack */
STATIC void
-S_regcp_restore(pTHX_ regexp *rex, I32 ix, U32 *maxopenparen_p)
+S_regcp_restore(pTHX_ regexp *rex, I32 ix, U32 *maxopenparen_p _pDEPTH)
{
I32 tmpix = PL_savestack_ix;
+ PERL_ARGS_ASSERT_REGCP_RESTORE;
+
PL_savestack_ix = ix;
regcppop(rex, maxopenparen_p);
PL_savestack_ix = tmpix;
#define regcpblow(cp) LEAVE_SCOPE(cp) /* Ignores regcppush()ed data. */
-STATIC bool
-S_isFOO_lc(pTHX_ const U8 classnum, const U8 character)
+#ifndef PERL_IN_XSUB_RE
+
+bool
+Perl_isFOO_lc(pTHX_ const U8 classnum, const U8 character)
{
/* Returns a boolean as to whether or not 'character' is a member of the
* Posix character class given by 'classnum' that should be equivalent to a
case _CC_ENUM_ALPHA: return isALPHA_LC(character);
case _CC_ENUM_ASCII: return isASCII_LC(character);
case _CC_ENUM_BLANK: return isBLANK_LC(character);
- case _CC_ENUM_CASED: return isLOWER_LC(character)
+ case _CC_ENUM_CASED: return isLOWER_LC(character)
|| isUPPER_LC(character);
case _CC_ENUM_CNTRL: return isCNTRL_LC(character);
case _CC_ENUM_DIGIT: return isDIGIT_LC(character);
return FALSE;
}
+#endif
+
STATIC bool
S_isFOO_utf8_lc(pTHX_ const U8 classnum, const U8* character)
{
PERL_UNUSED_ARG(flags);
PERL_UNUSED_ARG(data);
- DEBUG_EXECUTE_r(PerlIO_printf(Perl_debug_log,
+ DEBUG_EXECUTE_r(Perl_re_printf( aTHX_
"Intuit: trying to determine minimum start position...\n"));
/* for now, assume that all substr offsets are positive. If at some point
* to quickly reject some cases that can't match, but will reject
* them later after doing full char arithmetic */
if (prog->minlen > strend - strpos) {
- DEBUG_EXECUTE_r(PerlIO_printf(Perl_debug_log,
+ DEBUG_EXECUTE_r(Perl_re_printf( aTHX_
" String too short...\n"));
goto fail;
}
- RX_MATCH_UTF8_set(rx,utf8_target);
+ RXp_MATCH_UTF8_set(prog, utf8_target);
reginfo->is_utf8_target = cBOOL(utf8_target);
reginfo->info_aux = NULL;
reginfo->strbeg = strbeg;
reginfo->poscache_maxiter = 0;
if (utf8_target) {
- if (!prog->check_utf8 && prog->check_substr)
+ if ((!prog->anchored_utf8 && prog->anchored_substr)
+ || (!prog->float_utf8 && prog->float_substr))
to_utf8_substr(prog);
check = prog->check_utf8;
} else {
if (!sv)
continue;
- PerlIO_printf(Perl_debug_log,
- " substrs[%d]: min=%"IVdf" max=%"IVdf" end shift=%"IVdf
- " useful=%"IVdf" utf8=%d [%s]\n",
+ Perl_re_printf( aTHX_
+ " substrs[%d]: min=%" IVdf " max=%" IVdf " end shift=%" IVdf
+ " useful=%" IVdf " utf8=%d [%s]\n",
i,
(IV)prog->substrs->data[i].min_offset,
(IV)prog->substrs->data[i].max_offset,
if ( strpos != strbeg
&& (prog->intflags & PREGf_ANCH_SBOL))
{
- DEBUG_EXECUTE_r(PerlIO_printf(Perl_debug_log,
+ DEBUG_EXECUTE_r(Perl_re_printf( aTHX_
" Not at start...\n"));
goto fail;
}
SSize_t slen = SvCUR(check);
char *s = HOP3c(strpos, prog->check_offset_min, strend);
- DEBUG_EXECUTE_r(PerlIO_printf(Perl_debug_log,
- " Looking for check substr at fixed offset %"IVdf"...\n",
+ DEBUG_EXECUTE_r(Perl_re_printf( aTHX_
+ " Looking for check substr at fixed offset %" IVdf "...\n",
(IV)prog->check_offset_min));
if (SvTAIL(check)) {
|| strend - s < slen - 1
|| (strend - s == slen && strend[-1] != '\n')))
{
- DEBUG_EXECUTE_r(PerlIO_printf(Perl_debug_log,
+ DEBUG_EXECUTE_r(Perl_re_printf( aTHX_
" String too long...\n"));
goto fail_finish;
}
/* Now should match s[0..slen-2] */
slen--;
}
- if (slen && (*SvPVX_const(check) != *s
- || (slen > 1 && memNE(SvPVX_const(check), s, slen))))
+ if (slen && (strend - s < slen
+ || *SvPVX_const(check) != *s
+ || (slen > 1 && (memNE(SvPVX_const(check), s, slen)))))
{
- DEBUG_EXECUTE_r(PerlIO_printf(Perl_debug_log,
+ DEBUG_EXECUTE_r(Perl_re_printf( aTHX_
" String not equal...\n"));
goto fail_finish;
}
#ifdef DEBUGGING /* 7/99: reports of failure (with the older version) */
if (end_shift < 0)
- Perl_croak(aTHX_ "panic: end_shift: %"IVdf" pattern:\n%s\n ",
- (IV)end_shift, RX_PRECOMP(prog));
+ Perl_croak(aTHX_ "panic: end_shift: %" IVdf " pattern:\n%s\n ",
+ (IV)end_shift, RX_PRECOMP(rx));
#endif
restart:
U8* end_point;
DEBUG_OPTIMISE_MORE_r({
- PerlIO_printf(Perl_debug_log,
- " At restart: rx_origin=%"IVdf" Check offset min: %"IVdf
- " Start shift: %"IVdf" End shift %"IVdf
- " Real end Shift: %"IVdf"\n",
+ Perl_re_printf( aTHX_
+ " At restart: rx_origin=%" IVdf " Check offset min: %" IVdf
+ " Start shift: %" IVdf " End shift %" IVdf
+ " Real end Shift: %" IVdf "\n",
(IV)(rx_origin - strbeg),
(IV)prog->check_offset_min,
(IV)start_shift,
(IV)prog->check_end_shift);
});
- end_point = HOP3(strend, -end_shift, strbeg);
+ end_point = HOPBACK3(strend, end_shift, rx_origin);
+ if (!end_point)
+ goto fail_finish;
start_point = HOPMAYBE3(rx_origin, start_shift, end_point);
if (!start_point)
goto fail_finish;
&& prog->intflags & PREGf_ANCH
&& prog->check_offset_max != SSize_t_MAX)
{
- SSize_t len = SvCUR(check) - !!SvTAIL(check);
+ SSize_t check_len = SvCUR(check) - !!SvTAIL(check);
const char * const anchor =
(prog->intflags & PREGf_ANCH_GPOS ? strpos : strbeg);
+ SSize_t targ_len = (char*)end_point - anchor;
+
+ if (check_len > targ_len) {
+ DEBUG_EXECUTE_r(Perl_re_printf( aTHX_
+ "Anchored string too short...\n"));
+ goto fail_finish;
+ }
/* do a bytes rather than chars comparison. It's conservative;
* so it skips doing the HOP if the result can't possibly end
* up earlier than the old value of end_point.
*/
- if ((char*)end_point - anchor > prog->check_offset_max) {
+ assert(anchor + check_len <= (char *)end_point);
+ if (prog->check_offset_max + check_len < targ_len) {
end_point = HOP3lim((U8*)anchor,
prog->check_offset_max,
- end_point -len)
- + len;
+ end_point - check_len
+ )
+ + check_len;
}
}
check_at = fbm_instr( start_point, end_point,
check, multiline ? FBMrf_MULTILINE : 0);
- DEBUG_EXECUTE_r(PerlIO_printf(Perl_debug_log,
- " doing 'check' fbm scan, [%"IVdf"..%"IVdf"] gave %"IVdf"\n",
+ DEBUG_EXECUTE_r(Perl_re_printf( aTHX_
+ " doing 'check' fbm scan, [%" IVdf "..%" IVdf "] gave %" IVdf "\n",
(IV)((char*)start_point - strbeg),
(IV)((char*)end_point - strbeg),
(IV)(check_at ? check_at - strbeg : -1)
DEBUG_EXECUTE_r({
RE_PV_QUOTED_DECL(quoted, utf8_target, PERL_DEBUG_PAD_ZERO(0),
SvPVX_const(check), RE_SV_DUMPLEN(check), 30);
- PerlIO_printf(Perl_debug_log, " %s %s substr %s%s%s",
+ Perl_re_printf( aTHX_ " %s %s substr %s%s%s",
(check_at ? "Found" : "Did not find"),
(check == (utf8_target ? prog->anchored_utf8 : prog->anchored_substr)
? "anchored" : "floating"),
if (check_at - rx_origin > prog->check_offset_max)
rx_origin = HOP3c(check_at, -prog->check_offset_max, rx_origin);
/* Finish the diagnostic message */
- DEBUG_EXECUTE_r(PerlIO_printf(Perl_debug_log,
- "%ld (rx_origin now %"IVdf")...\n",
+ DEBUG_EXECUTE_r(Perl_re_printf( aTHX_
+ "%ld (rx_origin now %" IVdf ")...\n",
(long)(check_at - strbeg),
(IV)(rx_origin - strbeg)
));
char *from = s;
char *to = last + SvCUR(must) - (SvTAIL(must)!=0);
+ if (to > strend)
+ to = strend;
if (from > to) {
s = NULL;
- DEBUG_EXECUTE_r(PerlIO_printf(Perl_debug_log,
- " skipping 'other' fbm scan: %"IVdf" > %"IVdf"\n",
+ DEBUG_EXECUTE_r(Perl_re_printf( aTHX_
+ " skipping 'other' fbm scan: %" IVdf " > %" IVdf "\n",
(IV)(from - strbeg),
(IV)(to - strbeg)
));
must,
multiline ? FBMrf_MULTILINE : 0
);
- DEBUG_EXECUTE_r(PerlIO_printf(Perl_debug_log,
- " doing 'other' fbm scan, [%"IVdf"..%"IVdf"] gave %"IVdf"\n",
+ DEBUG_EXECUTE_r(Perl_re_printf( aTHX_
+ " doing 'other' fbm scan, [%" IVdf "..%" IVdf "] gave %" IVdf "\n",
(IV)(from - strbeg),
(IV)(to - strbeg),
(IV)(s ? s - strbeg : -1)
DEBUG_EXECUTE_r({
RE_PV_QUOTED_DECL(quoted, utf8_target, PERL_DEBUG_PAD_ZERO(0),
SvPVX_const(must), RE_SV_DUMPLEN(must), 30);
- PerlIO_printf(Perl_debug_log, " %s %s substr %s%s",
+ Perl_re_printf( aTHX_ " %s %s substr %s%s",
s ? "Found" : "Contradicts",
other_ix ? "floating" : "anchored",
quoted, RE_SV_TAIL(must));
/* last1 is latest possible substr location. If we didn't
* find it before there, we never will */
if (last >= last1) {
- DEBUG_EXECUTE_r(PerlIO_printf(Perl_debug_log,
+ DEBUG_EXECUTE_r(Perl_re_printf( aTHX_
"; giving up...\n"));
goto fail_finish;
}
other_ix /* i.e. if other-is-float */
? HOP3c(rx_origin, 1, strend)
: HOP4c(last, 1 - other->min_offset, strbeg, strend);
- DEBUG_EXECUTE_r(PerlIO_printf(Perl_debug_log,
- "; about to retry %s at offset %ld (rx_origin now %"IVdf")...\n",
+ DEBUG_EXECUTE_r(Perl_re_printf( aTHX_
+ "; about to retry %s at offset %ld (rx_origin now %" IVdf ")...\n",
(other_ix ? "floating" : "anchored"),
(long)(HOP3c(check_at, 1, strend) - strbeg),
(IV)(rx_origin - strbeg)
rx_origin = HOP3c(s, -other->min_offset, strbeg);
other_last = HOP3c(s, 1, strend);
}
- DEBUG_EXECUTE_r(PerlIO_printf(Perl_debug_log,
- " at offset %ld (rx_origin now %"IVdf")...\n",
+ DEBUG_EXECUTE_r(Perl_re_printf( aTHX_
+ " at offset %ld (rx_origin now %" IVdf ")...\n",
(long)(s - strbeg),
(IV)(rx_origin - strbeg)
));
}
else {
DEBUG_OPTIMISE_MORE_r(
- PerlIO_printf(Perl_debug_log,
- " Check-only match: offset min:%"IVdf" max:%"IVdf
- " check_at:%"IVdf" rx_origin:%"IVdf" rx_origin-check_at:%"IVdf
- " strend:%"IVdf"\n",
+ Perl_re_printf( aTHX_
+ " Check-only match: offset min:%" IVdf " max:%" IVdf
+ " check_at:%" IVdf " rx_origin:%" IVdf " rx_origin-check_at:%" IVdf
+ " strend:%" IVdf "\n",
(IV)prog->check_offset_min,
(IV)prog->check_offset_max,
(IV)(check_at-strbeg),
if (ml_anch && rx_origin != strbeg && rx_origin[-1] != '\n') {
char *s;
- DEBUG_EXECUTE_r(PerlIO_printf(Perl_debug_log,
+ DEBUG_EXECUTE_r(Perl_re_printf( aTHX_
" looking for /^/m anchor"));
/* we have failed the constraint of a \n before rx_origin.
if (s <= rx_origin ||
! ( rx_origin = (char *)memchr(rx_origin, '\n', s - rx_origin)))
{
- DEBUG_EXECUTE_r(PerlIO_printf(Perl_debug_log,
+ DEBUG_EXECUTE_r(Perl_re_printf( aTHX_
" Did not find /%s^%s/m...\n",
PL_colors[0], PL_colors[1]));
goto fail_finish;
/* Position contradicts check-string; either because
* check was anchored (and thus has no wiggle room),
* or check was float and rx_origin is above the float range */
- DEBUG_EXECUTE_r(PerlIO_printf(Perl_debug_log,
+ DEBUG_EXECUTE_r(Perl_re_printf( aTHX_
" Found /%s^%s/m, about to restart lookup for check-string with rx_origin %ld...\n",
PL_colors[0], PL_colors[1], (long)(rx_origin - strbeg)));
goto restart;
* contradict. On the other hand, the float "check" substr
* didn't contradict, so just retry the anchored "other"
* substr */
- DEBUG_EXECUTE_r(PerlIO_printf(Perl_debug_log,
- " Found /%s^%s/m, rescanning for anchored from offset %"IVdf" (rx_origin now %"IVdf")...\n",
+ DEBUG_EXECUTE_r(Perl_re_printf( aTHX_
+ " Found /%s^%s/m, rescanning for anchored from offset %" IVdf " (rx_origin now %" IVdf ")...\n",
PL_colors[0], PL_colors[1],
(IV)(rx_origin - strbeg + prog->anchored_offset),
(IV)(rx_origin - strbeg)
/* success: we don't contradict the found floating substring
* (and there's no anchored substr). */
- DEBUG_EXECUTE_r(PerlIO_printf(Perl_debug_log,
+ DEBUG_EXECUTE_r(Perl_re_printf( aTHX_
" Found /%s^%s/m with rx_origin %ld...\n",
PL_colors[0], PL_colors[1], (long)(rx_origin - strbeg)));
}
else {
- DEBUG_EXECUTE_r(PerlIO_printf(Perl_debug_log,
+ DEBUG_EXECUTE_r(Perl_re_printf( aTHX_
" (multiline anchor test skipped)\n"));
}
*/
if (prog->anchored_substr || prog->anchored_utf8 || ml_anch)
- endpos= HOP3c(rx_origin, (prog->minlen ? cl_l : 0), strend);
+ endpos = HOP3clim(rx_origin, (prog->minlen ? cl_l : 0), strend);
else if (prog->float_substr || prog->float_utf8) {
rx_max_float = HOP3c(check_at, -start_shift, strbeg);
- endpos= HOP3c(rx_max_float, cl_l, strend);
+ endpos = HOP3clim(rx_max_float, cl_l, strend);
}
else
endpos= strend;
- DEBUG_EXECUTE_r(PerlIO_printf(Perl_debug_log,
- " looking for class: start_shift: %"IVdf" check_at: %"IVdf
- " rx_origin: %"IVdf" endpos: %"IVdf"\n",
+ DEBUG_EXECUTE_r(Perl_re_printf( aTHX_
+ " looking for class: start_shift: %" IVdf " check_at: %" IVdf
+ " rx_origin: %" IVdf " endpos: %" IVdf "\n",
(IV)start_shift, (IV)(check_at - strbeg),
(IV)(rx_origin - strbeg), (IV)(endpos - strbeg)));
reginfo);
if (!s) {
if (endpos == strend) {
- DEBUG_EXECUTE_r( PerlIO_printf(Perl_debug_log,
+ DEBUG_EXECUTE_r( Perl_re_printf( aTHX_
" Could not match STCLASS...\n") );
goto fail;
}
- DEBUG_EXECUTE_r( PerlIO_printf(Perl_debug_log,
+ DEBUG_EXECUTE_r( Perl_re_printf( aTHX_
" This position contradicts STCLASS...\n") );
if ((prog->intflags & PREGf_ANCH) && !ml_anch
&& !(prog->intflags & PREGf_IMPLICIT))
* an extra anchored search may get done, but in
* practice the extra fbm_instr() is likely to
* get skipped anyway. */
- DEBUG_EXECUTE_r( PerlIO_printf(Perl_debug_log,
- " about to retry anchored at offset %ld (rx_origin now %"IVdf")...\n",
+ DEBUG_EXECUTE_r( Perl_re_printf( aTHX_
+ " about to retry anchored at offset %ld (rx_origin now %" IVdf ")...\n",
(long)(other_last - strbeg),
(IV)(rx_origin - strbeg)
));
* but since we goto a block of code that's going to
* search for the next \n if any, its safe here */
rx_origin++;
- DEBUG_EXECUTE_r( PerlIO_printf(Perl_debug_log,
+ DEBUG_EXECUTE_r( Perl_re_printf( aTHX_
" about to look for /%s^%s/m starting at rx_origin %ld...\n",
PL_colors[0], PL_colors[1],
(long)(rx_origin - strbeg)) );
* It's conservative: it errs on the side of doing 'goto restart',
* where there is code that does a proper char-based test */
if (rx_origin + start_shift + end_shift > strend) {
- DEBUG_EXECUTE_r( PerlIO_printf(Perl_debug_log,
+ DEBUG_EXECUTE_r( Perl_re_printf( aTHX_
" Could not match STCLASS...\n") );
goto fail;
}
- DEBUG_EXECUTE_r( PerlIO_printf(Perl_debug_log,
- " about to look for %s substr starting at offset %ld (rx_origin now %"IVdf")...\n",
+ DEBUG_EXECUTE_r( Perl_re_printf( aTHX_
+ " about to look for %s substr starting at offset %ld (rx_origin now %" IVdf ")...\n",
(prog->substrs->check_ix ? "floating" : "anchored"),
(long)(rx_origin + start_shift - strbeg),
(IV)(rx_origin - strbeg)
/* Success !!! */
if (rx_origin != s) {
- DEBUG_EXECUTE_r(PerlIO_printf(Perl_debug_log,
+ DEBUG_EXECUTE_r(Perl_re_printf( aTHX_
" By STCLASS: moving %ld --> %ld\n",
(long)(rx_origin - strbeg), (long)(s - strbeg))
);
}
else {
- DEBUG_EXECUTE_r(PerlIO_printf(Perl_debug_log,
+ DEBUG_EXECUTE_r(Perl_re_printf( aTHX_
" Does not contradict STCLASS...\n");
);
}
/* Fixed substring is found far enough so that the match
cannot start at strpos. */
- DEBUG_EXECUTE_r(PerlIO_printf(Perl_debug_log, " try at offset...\n"));
+ DEBUG_EXECUTE_r(Perl_re_printf( aTHX_ " try at offset...\n"));
++BmUSEFUL(utf8_target ? prog->check_utf8 : prog->check_substr); /* hooray/5 */
}
else {
)))
{
/* If flags & SOMETHING - do not do it many times on the same match */
- DEBUG_EXECUTE_r(PerlIO_printf(Perl_debug_log, " ... Disabling check substring...\n"));
+ DEBUG_EXECUTE_r(Perl_re_printf( aTHX_ " ... Disabling check substring...\n"));
/* XXX Does the destruction order has to change with utf8_target? */
SvREFCNT_dec(utf8_target ? prog->check_utf8 : prog->check_substr);
SvREFCNT_dec(utf8_target ? prog->check_substr : prog->check_utf8);
}
}
- DEBUG_EXECUTE_r(PerlIO_printf(Perl_debug_log,
+ DEBUG_EXECUTE_r(Perl_re_printf( aTHX_
"Intuit: %sSuccessfully guessed:%s match at offset %ld\n",
PL_colors[4], PL_colors[5], (long)(rx_origin - strbeg)) );
if (prog->check_substr || prog->check_utf8) /* could be removed already */
BmUSEFUL(utf8_target ? prog->check_utf8 : prog->check_substr) += 5; /* hooray */
fail:
- DEBUG_EXECUTE_r(PerlIO_printf(Perl_debug_log, "%sMatch rejected by optimizer%s\n",
+ DEBUG_EXECUTE_r(Perl_re_printf( aTHX_ "%sMatch rejected by optimizer%s\n",
PL_colors[4], PL_colors[5]));
return NULL;
}
uscan += len; \
len=0; \
} else { \
- uvc = _to_utf8_fold_flags( (const U8*) uc, foldbuf, &foldlen, flags); \
len = UTF8SKIP(uc); \
+ uvc = _toFOLD_utf8_flags( (const U8*) uc, uc + len, foldbuf, &foldlen, \
+ flags); \
skiplen = UVCHR_SKIP( uvc ); \
foldlen -= skiplen; \
uscan = foldbuf + skiplen; \
} \
} STMT_END
-#define DUMP_EXEC_POS(li,s,doutf8) \
+#define DUMP_EXEC_POS(li,s,doutf8,depth) \
dump_exec_pos(li,s,(reginfo->strend),(reginfo->strbeg), \
- startpos, doutf8)
+ startpos, doutf8, depth)
#define REXEC_FBC_EXACTISH_SCAN(COND) \
STMT_START { \
tmp = TEST_UV(tmp); \
LOAD_UTF8_CHARCLASS_ALNUM(); \
REXEC_FBC_UTF8_SCAN( /* advances s while s < strend */ \
- if (tmp == ! (TEST_UTF8((U8 *) s))) { \
+ if (tmp == ! (TEST_UTF8((U8 *) s, (U8 *) reginfo->strend))) { \
tmp = !tmp; \
IF_SUCCESS; \
} \
FBC_UTF8_A(TEST_NON_UTF8, PLACEHOLDER, REXEC_FBC_TRYIT), \
TEST_NON_UTF8, PLACEHOLDER, REXEC_FBC_TRYIT)
+#ifdef DEBUGGING
+static IV
+S_get_break_val_cp_checked(SV* const invlist, const UV cp_in) {
+ IV cp_out = Perl__invlist_search(invlist, cp_in);
+ assert(cp_out >= 0);
+ return cp_out;
+}
+# define _generic_GET_BREAK_VAL_CP_CHECKED(invlist, invmap, cp) \
+ invmap[S_get_break_val_cp_checked(invlist, cp)]
+#else
+# define _generic_GET_BREAK_VAL_CP_CHECKED(invlist, invmap, cp) \
+ invmap[_invlist_search(invlist, cp)]
+#endif
+
/* Takes a pointer to an inversion list, a pointer to its corresponding
* inversion map, and a code point, and returns the code point's value
* according to the two arrays. It assumes that all code points have a value.
* This is used as the base macro for macros for particular properties */
#define _generic_GET_BREAK_VAL_CP(invlist, invmap, cp) \
- invmap[_invlist_search(invlist, cp)]
+ _generic_GET_BREAK_VAL_CP_CHECKED(invlist, invmap, cp)
/* Same as above, but takes begin, end ptrs to a UTF-8 encoded string instead
* of a code point, returning the value for the first code point in the string.
#define getGCB_VAL_UTF8(pos, strend) \
_generic_GET_BREAK_VAL_UTF8(getGCB_VAL_CP, pos, strend)
+/* Returns the LB value for the input code point */
+#define getLB_VAL_CP(cp) \
+ _generic_GET_BREAK_VAL_CP( \
+ PL_LB_invlist, \
+ _Perl_LB_invmap, \
+ (cp))
+
+/* Returns the LB value for the first code point in the UTF-8 encoded string
+ * bounded by pos and strend */
+#define getLB_VAL_UTF8(pos, strend) \
+ _generic_GET_BREAK_VAL_UTF8(getLB_VAL_CP, pos, strend)
+
/* Returns the SB value for the input code point */
#define getSB_VAL_CP(cp) \
case ANYOFL:
_CHECK_AND_WARN_PROBLEMATIC_LOCALE;
- if ((FLAGS(c) & ANYOFL_UTF8_LOCALE_REQD) && ! IN_UTF8_CTYPE_LOCALE) {
+ if (ANYOFL_UTF8_LOCALE_REQD(FLAGS(c)) && ! IN_UTF8_CTYPE_LOCALE) {
Perl_ck_warner(aTHX_ packWARN(WARN_LOCALE), utf8_locale_required);
}
REXEC_FBC_UTF8_CLASS_SCAN(
reginclass(prog, c, (U8*)s, (U8*) strend, utf8_target));
}
+ else if (ANYOF_FLAGS(c)) {
+ REXEC_FBC_CLASS_SCAN(reginclass(prog,c, (U8*)s, (U8*)s+1, 0));
+ }
else {
- REXEC_FBC_CLASS_SCAN(REGINCLASS(prog, c, (U8*)s));
+ REXEC_FBC_CLASS_SCAN(ANYOF_BITMAP_TEST(c, *((U8*)s)));
}
break;
* trying that it will fail; so don't start a match past the
* required minimum number from the far end */
e = HOP3c(strend, -((SSize_t)ln), s);
-
- if (reginfo->intuit && e < s) {
- e = s; /* Due to minlen logic of intuit() */
- }
+ if (e < s)
+ break;
c1 = *pat_string;
c2 = fold_array[c1];
*/
e = HOP3c(strend, -((SSize_t)lnc), s);
- if (reginfo->intuit && e < s) {
- e = s; /* Due to minlen logic of intuit() */
- }
-
/* XXX Note that we could recalculate e to stop the loop earlier,
* as the worst case expansion above will rarely be met, and as we
* go along we would usually find that e moves further to the left.
goto do_boundu;
}
- FBC_BOUND(isWORDCHAR_LC, isWORDCHAR_LC_uvchr, isWORDCHAR_LC_utf8);
+ FBC_BOUND(isWORDCHAR_LC, isWORDCHAR_LC_uvchr, isWORDCHAR_LC_utf8_safe);
break;
case NBOUNDL:
goto do_nboundu;
}
- FBC_NBOUND(isWORDCHAR_LC, isWORDCHAR_LC_uvchr, isWORDCHAR_LC_utf8);
+ FBC_NBOUND(isWORDCHAR_LC, isWORDCHAR_LC_uvchr, isWORDCHAR_LC_utf8_safe);
break;
case BOUND: /* regcomp.c makes sure that this only has the traditional \b
meaning */
assert(FLAGS(c) == TRADITIONAL_BOUND);
- FBC_BOUND(isWORDCHAR, isWORDCHAR_uni, isWORDCHAR_utf8);
+ FBC_BOUND(isWORDCHAR, isWORDCHAR_uni, isWORDCHAR_utf8_safe);
break;
case BOUNDA: /* regcomp.c makes sure that this only has the traditional \b
meaning */
assert(FLAGS(c) == TRADITIONAL_BOUND);
- FBC_NBOUND(isWORDCHAR, isWORDCHAR_uni, isWORDCHAR_utf8);
+ FBC_NBOUND(isWORDCHAR, isWORDCHAR_uni, isWORDCHAR_utf8_safe);
break;
case NBOUNDA: /* regcomp.c makes sure that this only has the traditional \b
case NBOUNDU:
if ((bound_type) FLAGS(c) == TRADITIONAL_BOUND) {
- FBC_NBOUND(isWORDCHAR_L1, isWORDCHAR_uni, isWORDCHAR_utf8);
+ FBC_NBOUND(isWORDCHAR_L1, isWORDCHAR_uni, isWORDCHAR_utf8_safe);
break;
}
do_boundu:
switch((bound_type) FLAGS(c)) {
case TRADITIONAL_BOUND:
- FBC_BOUND(isWORDCHAR_L1, isWORDCHAR_uni, isWORDCHAR_utf8);
+ FBC_BOUND(isWORDCHAR_L1, isWORDCHAR_uni, isWORDCHAR_utf8_safe);
break;
case GCB_BOUND:
if (s == reginfo->strbeg) {
while (s < strend) {
GCB_enum after = getGCB_VAL_UTF8((U8*) s,
(U8*) reginfo->strend);
- if ( (to_complement ^ isGCB(before, after))
+ if ( (to_complement ^ isGCB(before,
+ after,
+ (U8*) reginfo->strbeg,
+ (U8*) s,
+ utf8_target))
&& (reginfo->intuit || regtry(reginfo, &s)))
{
goto got_it;
}
break;
+ case LB_BOUND:
+ if (s == reginfo->strbeg) {
+ if (reginfo->intuit || regtry(reginfo, &s)) {
+ goto got_it;
+ }
+ s += (utf8_target) ? UTF8SKIP(s) : 1;
+ if (UNLIKELY(s >= reginfo->strend)) {
+ break;
+ }
+ }
+
+ if (utf8_target) {
+ LB_enum before = getLB_VAL_UTF8(reghop3((U8*)s,
+ -1,
+ (U8*)(reginfo->strbeg)),
+ (U8*) reginfo->strend);
+ while (s < strend) {
+ LB_enum after = getLB_VAL_UTF8((U8*) s, (U8*) reginfo->strend);
+ if (to_complement ^ isLB(before,
+ after,
+ (U8*) reginfo->strbeg,
+ (U8*) s,
+ (U8*) reginfo->strend,
+ utf8_target)
+ && (reginfo->intuit || regtry(reginfo, &s)))
+ {
+ goto got_it;
+ }
+ before = after;
+ s += UTF8SKIP(s);
+ }
+ }
+ else { /* Not utf8. */
+ LB_enum before = getLB_VAL_CP((U8) *(s -1));
+ while (s < strend) {
+ LB_enum after = getLB_VAL_CP((U8) *s);
+ if (to_complement ^ isLB(before,
+ after,
+ (U8*) reginfo->strbeg,
+ (U8*) s,
+ (U8*) reginfo->strend,
+ utf8_target)
+ && (reginfo->intuit || regtry(reginfo, &s)))
+ {
+ goto got_it;
+ }
+ before = after;
+ s++;
+ }
+ }
+
+ if (reginfo->intuit || regtry(reginfo, &s)) {
+ goto got_it;
+ }
+
+ break;
+
case SB_BOUND:
if (s == reginfo->strbeg) {
if (reginfo->intuit || regtry(reginfo, &s)) {
if (utf8_target) {
/* The complement of something that matches only ASCII matches all
* non-ASCII, plus everything in ASCII that isn't in the class. */
- REXEC_FBC_UTF8_CLASS_SCAN(! isASCII_utf8(s)
+ REXEC_FBC_UTF8_CLASS_SCAN( ! isASCII_utf8_safe(s, strend)
|| ! _generic_isCC_A(*s, FLAGS(c)));
break;
}
if ((UTF8_IS_INVARIANT(*s)
&& to_complement ^ cBOOL(_generic_isCC((U8) *s,
classnum)))
- || (UTF8_IS_DOWNGRADEABLE_START(*s)
+ || ( UTF8_IS_NEXT_CHAR_DOWNGRADEABLE(s, strend)
&& to_complement ^ cBOOL(
_generic_isCC(EIGHT_BIT_UTF8_TO_NATIVE(*s,
*(s + 1)),
macros */
case _CC_ENUM_SPACE:
REXEC_FBC_UTF8_CLASS_SCAN(
- to_complement ^ cBOOL(isSPACE_utf8(s)));
+ to_complement ^ cBOOL(isSPACE_utf8_safe(s, strend)));
break;
case _CC_ENUM_BLANK:
REXEC_FBC_UTF8_CLASS_SCAN(
- to_complement ^ cBOOL(isBLANK_utf8(s)));
+ to_complement ^ cBOOL(isBLANK_utf8_safe(s, strend)));
break;
case _CC_ENUM_XDIGIT:
REXEC_FBC_UTF8_CLASS_SCAN(
- to_complement ^ cBOOL(isXDIGIT_utf8(s)));
+ to_complement ^ cBOOL(isXDIGIT_utf8_safe(s, strend)));
break;
case _CC_ENUM_VERTSPACE:
REXEC_FBC_UTF8_CLASS_SCAN(
- to_complement ^ cBOOL(isVERTWS_utf8(s)));
+ to_complement ^ cBOOL(isVERTWS_utf8_safe(s, strend)));
break;
case _CC_ENUM_CNTRL:
REXEC_FBC_UTF8_CLASS_SCAN(
- to_complement ^ cBOOL(isCNTRL_utf8(s)));
+ to_complement ^ cBOOL(isCNTRL_utf8_safe(s, strend)));
break;
default:
* FBC macro instead of being expanded out. Since we've loaded the
* swash, we don't have to check for that each time through the loop */
REXEC_FBC_UTF8_CLASS_SCAN(
- to_complement ^ cBOOL(_generic_utf8(
+ to_complement ^ cBOOL(_generic_utf8_safe(
classnum,
s,
+ strend,
swash_fetch(PL_utf8_swash_ptrs[classnum],
(U8 *) s, TRUE))));
break;
DEBUG_TRIE_EXECUTE_r(
if ( uc <= (U8*)last_start && !BITMAP_TEST(bitmap,*uc) ) {
dump_exec_pos( (char *)uc, c, strend, real_start,
- (char *)uc, utf8_target );
- PerlIO_printf( Perl_debug_log,
+ (char *)uc, utf8_target, 0 );
+ Perl_re_printf( aTHX_
" Scanning for legal start char...\n");
}
);
foldbuf, uniflags);
DEBUG_TRIE_EXECUTE_r({
dump_exec_pos( (char *)uc, c, strend,
- real_start, s, utf8_target);
- PerlIO_printf(Perl_debug_log,
- " Charid:%3u CP:%4"UVxf" ",
+ real_start, s, utf8_target, 0);
+ Perl_re_printf( aTHX_
+ " Charid:%3u CP:%4" UVxf " ",
charid, uvc);
});
}
DEBUG_TRIE_EXECUTE_r({
if (failed)
dump_exec_pos( (char *)uc, c, strend, real_start,
- s, utf8_target );
- PerlIO_printf( Perl_debug_log,
- "%sState: %4"UVxf", word=%"UVxf,
+ s, utf8_target, 0 );
+ Perl_re_printf( aTHX_
+ "%sState: %4" UVxf ", word=%" UVxf,
failed ? " Fail transition to " : "",
(UV)state, (UV)word);
});
&& (tmp=trie->trans[offset].next))
{
DEBUG_TRIE_EXECUTE_r(
- PerlIO_printf( Perl_debug_log," - legal\n"));
+ Perl_re_printf( aTHX_ " - legal\n"));
state = tmp;
break;
}
else {
DEBUG_TRIE_EXECUTE_r(
- PerlIO_printf( Perl_debug_log," - fail\n"));
+ Perl_re_printf( aTHX_ " - fail\n"));
failed = 1;
state = aho->fail[state];
}
else {
/* we must be accepting here */
DEBUG_TRIE_EXECUTE_r(
- PerlIO_printf( Perl_debug_log," - accepting\n"));
+ Perl_re_printf( aTHX_ " - accepting\n"));
failed = 1;
break;
}
if (leftmost) {
s = (char*)leftmost;
DEBUG_TRIE_EXECUTE_r({
- PerlIO_printf(
- Perl_debug_log,"Matches word #%"UVxf" at position %"IVdf". Trying full pattern...\n",
+ Perl_re_printf( aTHX_ "Matches word #%" UVxf " at position %" IVdf ". Trying full pattern...\n",
(UV)accepted_word, (IV)(s - real_start)
);
});
}
s = HOPc(s,1);
DEBUG_TRIE_EXECUTE_r({
- PerlIO_printf( Perl_debug_log,"Pattern failed. Looking for new start point...\n");
+ Perl_re_printf( aTHX_ "Pattern failed. Looking for new start point...\n");
});
} else {
DEBUG_TRIE_EXECUTE_r(
- PerlIO_printf( Perl_debug_log,"No match.\n"));
+ Perl_re_printf( aTHX_ "No match.\n"));
break;
}
}
if (flags & REXEC_COPY_STR) {
#ifdef PERL_ANY_COW
if (SvCANCOW(sv)) {
- if (DEBUG_C_TEST) {
- PerlIO_printf(Perl_debug_log,
+ DEBUG_C(Perl_re_printf( aTHX_
"Copy on write: regexp capture, type %d\n",
- (int) SvTYPE(sv));
- }
+ (int) SvTYPE(sv)));
/* Create a new COW SV to share the match string and store
* in saved_copy, unless the current COW SV in saved_copy
* is valid and suitable for our purpose */
}
else {
/* create new COW SV to share string */
- RX_MATCH_COPY_FREE(rx);
+ RXp_MATCH_COPY_FREE(prog);
prog->saved_copy = sv_setsv_cow(prog->saved_copy, sv);
}
prog->subbeg = (char *)SvPVX_const(prog->saved_copy);
assert(min >= 0 && min <= max && min <= strend - strbeg);
sublen = max - min;
- if (RX_MATCH_COPIED(rx)) {
+ if (RXp_MATCH_COPIED(prog)) {
if (sublen > prog->sublen)
prog->subbeg =
(char*)saferealloc(prog->subbeg, sublen+1);
prog->subbeg[sublen] = '\0';
prog->suboffset = min;
prog->sublen = sublen;
- RX_MATCH_COPIED_on(rx);
+ RXp_MATCH_COPIED_on(prog);
}
prog->subcoffset = prog->suboffset;
if (prog->suboffset && utf8_target) {
}
}
else {
- RX_MATCH_COPY_FREE(rx);
+ RXp_MATCH_COPY_FREE(prog);
prog->subbeg = strbeg;
prog->suboffset = 0;
prog->subcoffset = 0;
? strbeg + MgBYTEPOS(mg, sv, strbeg, strend-strbeg)
: strbeg; /* pos() not defined; use start of string */
- DEBUG_GPOS_r(PerlIO_printf(Perl_debug_log,
- "GPOS ganch set to strbeg[%"IVdf"]\n", (IV)(reginfo->ganch - strbeg)));
+ DEBUG_GPOS_r(Perl_re_printf( aTHX_
+ "GPOS ganch set to strbeg[%" IVdf "]\n", (IV)(reginfo->ganch - strbeg)));
/* in the presence of \G, we may need to start looking earlier in
* the string than the suggested start point of stringarg:
if (!startpos ||
((flags & REXEC_FAIL_ON_UNDERFLOW) && startpos < stringarg))
{
- DEBUG_r(PerlIO_printf(Perl_debug_log,
+ DEBUG_r(Perl_re_printf( aTHX_
"fail: ganch-gofs before earliest possible start\n"));
return 0;
}
minlen = prog->minlen;
if ((startpos + minlen) > strend || startpos < strbeg) {
- DEBUG_r(PerlIO_printf(Perl_debug_log,
+ DEBUG_r(Perl_re_printf( aTHX_
"Regex match can't succeed, so not even tried\n"));
return 0;
}
{
/* this should only be possible under \G */
assert(prog->intflags & PREGf_GPOS_SEEN);
- DEBUG_EXECUTE_r(PerlIO_printf(Perl_debug_log,
+ DEBUG_EXECUTE_r(Perl_re_printf( aTHX_
"matched, but failing for REXEC_FAIL_ON_UNDERFLOW\n"));
goto phooey;
}
/* match via INTUIT shouldn't have any captures.
* Let @-, @+, $^N know */
prog->lastparen = prog->lastcloseparen = 0;
- RX_MATCH_UTF8_set(rx, utf8_target);
+ RXp_MATCH_UTF8_set(prog, utf8_target);
prog->offs[0].start = s - strbeg;
prog->offs[0].end = utf8_target
? (char*)utf8_hop((U8*)s, prog->minlenret) - strbeg
multiline = prog->extflags & RXf_PMf_MULTILINE;
if (strend - s < (minlen+(prog->check_offset_min<0?prog->check_offset_min:0))) {
- DEBUG_EXECUTE_r(PerlIO_printf(Perl_debug_log,
+ DEBUG_EXECUTE_r(Perl_re_printf( aTHX_
"String too short [regexec_flags]...\n"));
goto phooey;
}
Perl_croak(aTHX_ "corrupted regexp program");
}
- RX_MATCH_TAINTED_off(rx);
- RX_MATCH_UTF8_set(rx, utf8_target);
+ RXp_MATCH_TAINTED_off(prog);
+ RXp_MATCH_UTF8_set(prog, utf8_target);
reginfo->prog = rx; /* Yes, sorry that this is confusing. */
reginfo->intuit = 0;
swap = prog->offs;
/* do we need a save destructor here for eval dies? */
Newxz(prog->offs, (prog->nparens + 1), regexp_paren_pair);
- DEBUG_BUFFERS_r(PerlIO_printf(Perl_debug_log,
- "rex=0x%"UVxf" saving offs: orig=0x%"UVxf" new=0x%"UVxf"\n",
- PTR2UV(prog),
+ DEBUG_BUFFERS_r(Perl_re_exec_indentf( aTHX_
+ "rex=0x%" UVxf " saving offs: orig=0x%" UVxf " new=0x%" UVxf "\n",
+ 0,
+ PTR2UV(prog),
PTR2UV(swap),
PTR2UV(prog->offs)
));
}
+ if (prog->recurse_locinput)
+ Zero(prog->recurse_locinput,prog->nparens + 1, char *);
+
/* Simplest case: anchored match need be tried only once, or with
* MBOL, only at the beginning of each line.
*
);
}
DEBUG_EXECUTE_r(if (!did_match)
- PerlIO_printf(Perl_debug_log,
+ Perl_re_printf( aTHX_
"Did not find anchored character...\n")
);
}
DEBUG_EXECUTE_r(if (!did_match) {
RE_PV_QUOTED_DECL(quoted, utf8_target, PERL_DEBUG_PAD_ZERO(0),
SvPVX_const(must), RE_SV_DUMPLEN(must), 30);
- PerlIO_printf(Perl_debug_log, "Did not find %s substr %s%s...\n",
+ Perl_re_printf( aTHX_ "Did not find %s substr %s%s...\n",
((must == prog->anchored_substr || must == prog->anchored_utf8)
? "anchored" : "floating"),
quoted, RE_SV_TAIL(must));
regprop(prog, prop, c, reginfo, NULL);
{
RE_PV_QUOTED_DECL(quoted,utf8_target,PERL_DEBUG_PAD_ZERO(1),
- s,strend-s,60);
- PerlIO_printf(Perl_debug_log,
+ s,strend-s,PL_dump_re_max_len);
+ Perl_re_printf( aTHX_
"Matching stclass %.*s against %s (%d bytes)\n",
(int)SvCUR(prop), SvPVX_const(prop),
quoted, (int)(strend - s));
});
if (find_byclass(prog, c, s, strend, reginfo))
goto got_it;
- DEBUG_EXECUTE_r(PerlIO_printf(Perl_debug_log, "Contradicts stclass... [regexec_flags]\n"));
+ DEBUG_EXECUTE_r(Perl_re_printf( aTHX_ "Contradicts stclass... [regexec_flags]\n"));
}
else {
dontbother = 0;
* the \n. */
char *checkpos= strend - len;
DEBUG_OPTIMISE_r(
- PerlIO_printf(Perl_debug_log,
+ Perl_re_printf( aTHX_
"%sChecking for float_real.%s\n",
PL_colors[4], PL_colors[5]));
if (checkpos + 1 < strbeg) {
/* can't match, even if we remove the trailing \n
* string is too short to match */
DEBUG_EXECUTE_r(
- PerlIO_printf(Perl_debug_log,
+ Perl_re_printf( aTHX_
"%sString shorter than required trailing substring, cannot match.%s\n",
PL_colors[4], PL_colors[5]));
goto phooey;
/* cant match, string is too short when the "\n" is
* included */
DEBUG_EXECUTE_r(
- PerlIO_printf(Perl_debug_log,
+ Perl_re_printf( aTHX_
"%sString does not contain required trailing substring, cannot match.%s\n",
PL_colors[4], PL_colors[5]));
goto phooey;
last= checkpos;
} else {
DEBUG_EXECUTE_r(
- PerlIO_printf(Perl_debug_log,
+ Perl_re_printf( aTHX_
"%sString does not contain required trailing substring, cannot match.%s\n",
PL_colors[4], PL_colors[5]));
goto phooey;
* pretty sure it is not anymore, so I have removed the comment
* and replaced it with this one. Yves */
DEBUG_EXECUTE_r(
- PerlIO_printf(Perl_debug_log,
+ Perl_re_printf( aTHX_
"%sString does not contain required substring, cannot match.%s\n",
PL_colors[4], PL_colors[5]
));
{
/* this should only be possible under \G */
assert(prog->intflags & PREGf_GPOS_SEEN);
- DEBUG_EXECUTE_r(PerlIO_printf(Perl_debug_log,
+ DEBUG_EXECUTE_r(Perl_re_printf( aTHX_
"matched, but failing for REXEC_FAIL_ON_UNDERFLOW\n"));
goto phooey;
}
DEBUG_BUFFERS_r(
if (swap)
- PerlIO_printf(Perl_debug_log,
- "rex=0x%"UVxf" freeing offs: 0x%"UVxf"\n",
- PTR2UV(prog),
+ Perl_re_exec_indentf( aTHX_
+ "rex=0x%" UVxf " freeing offs: 0x%" UVxf "\n",
+ 0,
+ PTR2UV(prog),
PTR2UV(swap)
);
);
return 1;
phooey:
- DEBUG_EXECUTE_r(PerlIO_printf(Perl_debug_log, "%sMatch failed%s\n",
+ DEBUG_EXECUTE_r(Perl_re_printf( aTHX_ "%sMatch failed%s\n",
PL_colors[4], PL_colors[5]));
/* clean up; this will trigger destructors that will free all slabs
if (swap) {
/* we failed :-( roll it back */
- DEBUG_BUFFERS_r(PerlIO_printf(Perl_debug_log,
- "rex=0x%"UVxf" rolling back offs: freeing=0x%"UVxf" restoring=0x%"UVxf"\n",
- PTR2UV(prog),
+ DEBUG_BUFFERS_r(Perl_re_exec_indentf( aTHX_
+ "rex=0x%" UVxf " rolling back offs: freeing=0x%" UVxf " restoring=0x%" UVxf "\n",
+ 0,
+ PTR2UV(prog),
PTR2UV(prog->offs),
PTR2UV(swap)
));
REGEXP *const rx = reginfo->prog;
regexp *const prog = ReANY(rx);
SSize_t result;
+#ifdef DEBUGGING
+ U32 depth = 0; /* used by REGCP_SET */
+#endif
RXi_GET_DECL(prog,progi);
GET_RE_DEBUG_FLAGS_DECL;
* above-mentioned test suite tests to succeed. The common theme
* on those tests seems to be returning null fields from matches.
* --jhi updated by dapm */
+
+ /* After encountering a variant of the issue mentioned above I think
+ * the point Ilya was making is that if we properly unwind whenever
+ * we set lastparen to a smaller value then we should not need to do
+ * this every time, only when needed. So if we have tests that fail if
+ * we remove this, then it suggests somewhere else we are improperly
+ * unwinding the lastparen/paren buffers. See UNWIND_PARENS() and
+ * places it is called, and related regcp() routines. - Yves */
#if 1
if (prog->nparens) {
regexp_paren_pair *pp = prog->offs;
sayNO
/* this is used to determine how far from the left messages like
- 'failed...' are printed. It should be set such that messages
- are inline with the regop output that created them.
+ 'failed...' are printed in regexec.c. It should be set such that
+ messages are inline with the regop output that created them.
*/
-#define REPORT_CODE_OFF 32
+#define REPORT_CODE_OFF 29
+#define INDENT_CHARS(depth) ((int)(depth) % 20)
+#ifdef DEBUGGING
+int
+Perl_re_exec_indentf(pTHX_ const char *fmt, U32 depth, ...)
+{
+ va_list ap;
+ int result;
+ PerlIO *f= Perl_debug_log;
+ PERL_ARGS_ASSERT_RE_EXEC_INDENTF;
+ va_start(ap, depth);
+ PerlIO_printf(f, "%*s|%4" UVuf "| %*s", REPORT_CODE_OFF, "", (UV)depth, INDENT_CHARS(depth), "" );
+ result = PerlIO_vprintf(f, fmt, ap);
+ va_end(ap);
+ return result;
+}
+#endif /* DEBUGGING */
#define CHRTEST_UNINIT -1001 /* c1/c2 haven't been calculated yet */
STATIC regmatch_state *
S_push_slab(pTHX)
{
-#if PERL_VERSION < 9 && !defined(PERL_CORE)
- dMY_CXT;
-#endif
regmatch_slab *s = PL_regmatch_slab->next;
if (!s) {
Newx(s, 1, regmatch_slab);
*/
-#define DEBUG_STATE_pp(pp) \
- DEBUG_STATE_r({ \
- DUMP_EXEC_POS(locinput, scan, utf8_target); \
- PerlIO_printf(Perl_debug_log, \
- " %*s"pp" %s%s%s%s%s\n", \
- depth*2, "", \
- PL_reg_name[st->resume_state], \
- ((st==yes_state||st==mark_state) ? "[" : ""), \
- ((st==yes_state) ? "Y" : ""), \
- ((st==mark_state) ? "M" : ""), \
- ((st==yes_state||st==mark_state) ? "]" : "") \
- ); \
+#define DEBUG_STATE_pp(pp) \
+ DEBUG_STATE_r({ \
+ DUMP_EXEC_POS(locinput, scan, utf8_target,depth); \
+ Perl_re_printf( aTHX_ \
+ "%*s" pp " %s%s%s%s%s\n", \
+ INDENT_CHARS(depth), "", \
+ PL_reg_name[st->resume_state], \
+ ((st==yes_state||st==mark_state) ? "[" : ""), \
+ ((st==yes_state) ? "Y" : ""), \
+ ((st==mark_state) ? "M" : ""), \
+ ((st==yes_state||st==mark_state) ? "]" : "") \
+ ); \
});
reginitcolors();
{
RE_PV_QUOTED_DECL(s0, utf8_pat, PERL_DEBUG_PAD_ZERO(0),
- RX_PRECOMP_const(prog), RX_PRELEN(prog), 60);
+ RX_PRECOMP_const(prog), RX_PRELEN(prog), PL_dump_re_max_len);
RE_PV_QUOTED_DECL(s1, utf8_target, PERL_DEBUG_PAD_ZERO(1),
- start, end - start, 60);
+ start, end - start, PL_dump_re_max_len);
- PerlIO_printf(Perl_debug_log,
+ Perl_re_printf( aTHX_
"%s%s REx%s %s against %s\n",
PL_colors[4], blurb, PL_colors[5], s0, s1);
if (utf8_target||utf8_pat)
- PerlIO_printf(Perl_debug_log, "UTF-8 %s%s%s...\n",
+ Perl_re_printf( aTHX_ "UTF-8 %s%s%s...\n",
utf8_pat ? "pattern" : "",
utf8_pat && utf8_target ? " and " : "",
utf8_target ? "string" : ""
const char *loc_regeol,
const char *loc_bostr,
const char *loc_reg_starttry,
- const bool utf8_target)
+ const bool utf8_target,
+ const U32 depth
+ )
{
const int docolor = *PL_colors[0] || *PL_colors[2] || *PL_colors[4];
const int taill = (docolor ? 10 : 7); /* 3 chars for "> <" */
const int is_uni = utf8_target ? 1 : 0;
RE_PV_COLOR_DECL(s0,len0,is_uni,PERL_DEBUG_PAD(0),
- (locinput - pref_len),pref0_len, 60, 4, 5);
+ (locinput - pref_len),pref0_len, PL_dump_re_max_len, 4, 5);
RE_PV_COLOR_DECL(s1,len1,is_uni,PERL_DEBUG_PAD(1),
(locinput - pref_len + pref0_len),
- pref_len - pref0_len, 60, 2, 3);
+ pref_len - pref0_len, PL_dump_re_max_len, 2, 3);
RE_PV_COLOR_DECL(s2,len2,is_uni,PERL_DEBUG_PAD(2),
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|",
+ Perl_re_printf( aTHX_
+ "%4" IVdf " <%.*s%.*s%s%.*s>%*s|%4u| ",
(IV)(locinput - loc_bostr),
len0, s0,
len1, s1,
(docolor ? "" : "> <"),
len2, s2,
(int)(tlen > 19 ? 0 : 19 - tlen),
- "");
+ "",
+ depth);
}
}
}
else {
STRLEN len;
- _to_utf8_fold_flags(s,
- d,
- &len,
- FOLD_FLAGS_FULL | FOLD_FLAGS_LOCALE);
+ _toFOLD_utf8_flags(s,
+ pat_end,
+ d,
+ &len,
+ FOLD_FLAGS_FULL | FOLD_FLAGS_LOCALE);
d += len;
s += UTF8SKIP(s);
}
}
else { /* Does participate in folds */
AV* list = (AV*) *listp;
- if (av_tindex(list) != 1) {
+ if (av_tindex_skip_len_mg(list) != 1) {
/* If there aren't exactly two folds to this, it is
* outside the scope of this function */
return TRUE;
}
-/* This creates a single number by combining two, with 'before' being like the
- * 10's digit, but this isn't necessarily base 10; it is base however many
- * elements of the enum there are */
-#define GCBcase(before, after) ((GCB_ENUM_COUNT * before) + after)
-
STATIC bool
-S_isGCB(const GCB_enum before, const GCB_enum after)
+S_isGCB(pTHX_ const GCB_enum before, const GCB_enum after, const U8 * const strbeg, const U8 * const curpos, const bool utf8_target)
{
/* returns a boolean indicating if there is a Grapheme Cluster Boundary
- * between the inputs. See http://www.unicode.org/reports/tr29/ */
+ * between the inputs. See http://www.unicode.org/reports/tr29/. */
+
+ PERL_ARGS_ASSERT_ISGCB;
+
+ switch (GCB_table[before][after]) {
+ case GCB_BREAKABLE:
+ return TRUE;
+
+ case GCB_NOBREAK:
+ return FALSE;
+
+ case GCB_RI_then_RI:
+ {
+ int RI_count = 1;
+ U8 * temp_pos = (U8 *) curpos;
+
+ /* Do not break within emoji flag sequences. That is, do not
+ * break between regional indicator (RI) symbols if there is an
+ * odd number of RI characters before the break point.
+ * GB12 sot (RI RI)* RI × RI
+ * GB13 [^RI] (RI RI)* RI × RI */
+
+ while (backup_one_GCB(strbeg,
+ &temp_pos,
+ utf8_target) == GCB_Regional_Indicator)
+ {
+ RI_count++;
+ }
+
+ return RI_count % 2 != 1;
+ }
- switch (GCBcase(before, after)) {
+ case GCB_EX_then_EM:
- /* Break at the start and end of text.
- GB1. sot ÷
- GB2. ÷ eot
+ /* GB10 ( E_Base | E_Base_GAZ ) Extend* × E_Modifier */
+ {
+ U8 * temp_pos = (U8 *) curpos;
+ GCB_enum prev;
- Break before and after controls except between CR and LF
- GB4. ( Control | CR | LF ) ÷
- GB5. ÷ ( Control | CR | LF )
+ do {
+ prev = backup_one_GCB(strbeg, &temp_pos, utf8_target);
+ }
+ while (prev == GCB_Extend);
+
+ return prev != GCB_E_Base && prev != GCB_E_Base_GAZ;
+ }
- Otherwise, break everywhere.
- GB10. Any ÷ Any */
default:
+ break;
+ }
+
+#ifdef DEBUGGING
+ Perl_re_printf( aTHX_ "Unhandled GCB pair: GCB_table[%d, %d] = %d\n",
+ before, after, GCB_table[before][after]);
+ assert(0);
+#endif
+ return TRUE;
+}
+
+STATIC GCB_enum
+S_backup_one_GCB(pTHX_ const U8 * const strbeg, U8 ** curpos, const bool utf8_target)
+{
+ GCB_enum gcb;
+
+ PERL_ARGS_ASSERT_BACKUP_ONE_GCB;
+
+ if (*curpos < strbeg) {
+ return GCB_EDGE;
+ }
+
+ if (utf8_target) {
+ U8 * prev_char_pos = reghopmaybe3(*curpos, -1, strbeg);
+ U8 * prev_prev_char_pos;
+
+ if (! prev_char_pos) {
+ return GCB_EDGE;
+ }
+
+ if ((prev_prev_char_pos = reghopmaybe3((U8 *) prev_char_pos, -1, strbeg))) {
+ gcb = getGCB_VAL_UTF8(prev_prev_char_pos, prev_char_pos);
+ *curpos = prev_char_pos;
+ prev_char_pos = prev_prev_char_pos;
+ }
+ else {
+ *curpos = (U8 *) strbeg;
+ return GCB_EDGE;
+ }
+ }
+ else {
+ if (*curpos - 2 < strbeg) {
+ *curpos = (U8 *) strbeg;
+ return GCB_EDGE;
+ }
+ (*curpos)--;
+ gcb = getGCB_VAL_CP(*(*curpos - 1));
+ }
+
+ return gcb;
+}
+
+/* Combining marks attach to most classes that precede them, but this defines
+ * the exceptions (from TR14) */
+#define LB_CM_ATTACHES_TO(prev) ( ! ( prev == LB_EDGE \
+ || prev == LB_Mandatory_Break \
+ || prev == LB_Carriage_Return \
+ || prev == LB_Line_Feed \
+ || prev == LB_Next_Line \
+ || prev == LB_Space \
+ || prev == LB_ZWSpace))
+
+STATIC bool
+S_isLB(pTHX_ LB_enum before,
+ LB_enum after,
+ const U8 * const strbeg,
+ const U8 * const curpos,
+ const U8 * const strend,
+ const bool utf8_target)
+{
+ U8 * temp_pos = (U8 *) curpos;
+ LB_enum prev = before;
+
+ /* Is the boundary between 'before' and 'after' line-breakable?
+ * Most of this is just a table lookup of a generated table from Unicode
+ * rules. But some rules require context to decide, and so have to be
+ * implemented in code */
+
+ PERL_ARGS_ASSERT_ISLB;
+
+ /* Rule numbers in the comments below are as of Unicode 9.0 */
+
+ redo:
+ before = prev;
+ switch (LB_table[before][after]) {
+ case LB_BREAKABLE:
return TRUE;
- /* Do not break between a CR and LF.
- GB3. CR × LF */
- case GCBcase(GCB_CR, GCB_LF):
+ case LB_NOBREAK:
+ case LB_NOBREAK_EVEN_WITH_SP_BETWEEN:
return FALSE;
- /* Do not break Hangul syllable sequences.
- GB6. L × ( L | V | LV | LVT ) */
- case GCBcase(GCB_L, GCB_L):
- case GCBcase(GCB_L, GCB_V):
- case GCBcase(GCB_L, GCB_LV):
- case GCBcase(GCB_L, GCB_LVT):
- return FALSE;
+ case LB_SP_foo + LB_BREAKABLE:
+ case LB_SP_foo + LB_NOBREAK:
+ case LB_SP_foo + LB_NOBREAK_EVEN_WITH_SP_BETWEEN:
- /* GB7. ( LV | V ) × ( V | T ) */
- case GCBcase(GCB_LV, GCB_V):
- case GCBcase(GCB_LV, GCB_T):
- case GCBcase(GCB_V, GCB_V):
- case GCBcase(GCB_V, GCB_T):
- return FALSE;
+ /* When we have something following a SP, we have to look at the
+ * context in order to know what to do.
+ *
+ * SP SP should not reach here because LB7: Do not break before
+ * spaces. (For two spaces in a row there is nothing that
+ * overrides that) */
+ assert(after != LB_Space);
+
+ /* Here we have a space followed by a non-space. Mostly this is a
+ * case of LB18: "Break after spaces". But there are complications
+ * as the handling of spaces is somewhat tricky. They are in a
+ * number of rules, which have to be applied in priority order, but
+ * something earlier in the string can cause a rule to be skipped
+ * and a lower priority rule invoked. A prime example is LB7 which
+ * says don't break before a space. But rule LB8 (lower priority)
+ * says that the first break opportunity after a ZW is after any
+ * span of spaces immediately after it. If a ZW comes before a SP
+ * in the input, rule LB8 applies, and not LB7. Other such rules
+ * involve combining marks which are rules 9 and 10, but they may
+ * override higher priority rules if they come earlier in the
+ * string. Since we're doing random access into the middle of the
+ * string, we have to look for rules that should get applied based
+ * on both string position and priority. Combining marks do not
+ * attach to either ZW nor SP, so we don't have to consider them
+ * until later.
+ *
+ * To check for LB8, we have to find the first non-space character
+ * before this span of spaces */
+ do {
+ prev = backup_one_LB(strbeg, &temp_pos, utf8_target);
+ }
+ while (prev == LB_Space);
+
+ /* LB8 Break before any character following a zero-width space,
+ * even if one or more spaces intervene.
+ * ZW SP* ÷
+ * So if we have a ZW just before this span, and to get here this
+ * is the final space in the span. */
+ if (prev == LB_ZWSpace) {
+ return TRUE;
+ }
- /* GB8. ( LVT | T) × T */
- case GCBcase(GCB_LVT, GCB_T):
- case GCBcase(GCB_T, GCB_T):
- return FALSE;
+ /* Here, not ZW SP+. There are several rules that have higher
+ * priority than LB18 and can be resolved now, as they don't depend
+ * on anything earlier in the string (except ZW, which we have
+ * already handled). One of these rules is LB11 Do not break
+ * before Word joiner, but we have specially encoded that in the
+ * lookup table so it is caught by the single test below which
+ * catches the other ones. */
+ if (LB_table[LB_Space][after] - LB_SP_foo
+ == LB_NOBREAK_EVEN_WITH_SP_BETWEEN)
+ {
+ return FALSE;
+ }
- /* Do not break between regional indicator symbols.
- GB8a. Regional_Indicator × Regional_Indicator */
- case GCBcase(GCB_Regional_Indicator, GCB_Regional_Indicator):
- return FALSE;
+ /* If we get here, we have to XXX consider combining marks. */
+ if (prev == LB_Combining_Mark) {
- /* Do not break before extending characters.
- GB9. × Extend */
- case GCBcase(GCB_Other, GCB_Extend):
- case GCBcase(GCB_Extend, GCB_Extend):
- case GCBcase(GCB_L, GCB_Extend):
- case GCBcase(GCB_LV, GCB_Extend):
- case GCBcase(GCB_LVT, GCB_Extend):
- case GCBcase(GCB_Prepend, GCB_Extend):
- case GCBcase(GCB_Regional_Indicator, GCB_Extend):
- case GCBcase(GCB_SpacingMark, GCB_Extend):
- case GCBcase(GCB_T, GCB_Extend):
- case GCBcase(GCB_V, GCB_Extend):
- return FALSE;
+ /* What happens with these depends on the character they
+ * follow. */
+ do {
+ prev = backup_one_LB(strbeg, &temp_pos, utf8_target);
+ }
+ while (prev == LB_Combining_Mark);
- /* Do not break before SpacingMarks, or after Prepend characters.
- GB9a. × SpacingMark */
- case GCBcase(GCB_Other, GCB_SpacingMark):
- case GCBcase(GCB_Extend, GCB_SpacingMark):
- case GCBcase(GCB_L, GCB_SpacingMark):
- case GCBcase(GCB_LV, GCB_SpacingMark):
- case GCBcase(GCB_LVT, GCB_SpacingMark):
- case GCBcase(GCB_Prepend, GCB_SpacingMark):
- case GCBcase(GCB_Regional_Indicator, GCB_SpacingMark):
- case GCBcase(GCB_SpacingMark, GCB_SpacingMark):
- case GCBcase(GCB_T, GCB_SpacingMark):
- case GCBcase(GCB_V, GCB_SpacingMark):
- return FALSE;
+ /* Most times these attach to and inherit the characteristics
+ * of that character, but not always, and when not, they are to
+ * be treated as AL by rule LB10. */
+ if (! LB_CM_ATTACHES_TO(prev)) {
+ prev = LB_Alphabetic;
+ }
+ }
- /* GB9b. Prepend × */
- case GCBcase(GCB_Prepend, GCB_Other):
- case GCBcase(GCB_Prepend, GCB_L):
- case GCBcase(GCB_Prepend, GCB_LV):
- case GCBcase(GCB_Prepend, GCB_LVT):
- case GCBcase(GCB_Prepend, GCB_Prepend):
- case GCBcase(GCB_Prepend, GCB_Regional_Indicator):
- case GCBcase(GCB_Prepend, GCB_T):
- case GCBcase(GCB_Prepend, GCB_V):
- return FALSE;
+ /* Here, we have the character preceding the span of spaces all set
+ * up. We follow LB18: "Break after spaces" unless the table shows
+ * that is overriden */
+ return LB_table[prev][after] != LB_NOBREAK_EVEN_WITH_SP_BETWEEN;
+
+ case LB_CM_ZWJ_foo:
+
+ /* We don't know how to treat the CM except by looking at the first
+ * non-CM character preceding it. ZWJ is treated as CM */
+ do {
+ prev = backup_one_LB(strbeg, &temp_pos, utf8_target);
+ }
+ while (prev == LB_Combining_Mark || prev == LB_ZWJ);
+
+ /* Here, 'prev' is that first earlier non-CM character. If the CM
+ * attatches to it, then it inherits the behavior of 'prev'. If it
+ * doesn't attach, it is to be treated as an AL */
+ if (! LB_CM_ATTACHES_TO(prev)) {
+ prev = LB_Alphabetic;
+ }
+
+ goto redo;
+
+ case LB_HY_or_BA_then_foo + LB_BREAKABLE:
+ case LB_HY_or_BA_then_foo + LB_NOBREAK:
+
+ /* LB21a Don't break after Hebrew + Hyphen.
+ * HL (HY | BA) × */
+
+ if (backup_one_LB(strbeg, &temp_pos, utf8_target)
+ == LB_Hebrew_Letter)
+ {
+ return FALSE;
+ }
+
+ return LB_table[prev][after] - LB_HY_or_BA_then_foo == LB_BREAKABLE;
+
+ case LB_PR_or_PO_then_OP_or_HY + LB_BREAKABLE:
+ case LB_PR_or_PO_then_OP_or_HY + LB_NOBREAK:
+
+ /* LB25a (PR | PO) × ( OP | HY )? NU */
+ if (advance_one_LB(&temp_pos, strend, utf8_target) == LB_Numeric) {
+ return FALSE;
+ }
+
+ return LB_table[prev][after] - LB_PR_or_PO_then_OP_or_HY
+ == LB_BREAKABLE;
+
+ case LB_SY_or_IS_then_various + LB_BREAKABLE:
+ case LB_SY_or_IS_then_various + LB_NOBREAK:
+ {
+ /* LB25d NU (SY | IS)* × (NU | SY | IS | CL | CP ) */
+
+ LB_enum temp = prev;
+ do {
+ temp = backup_one_LB(strbeg, &temp_pos, utf8_target);
+ }
+ while (temp == LB_Break_Symbols || temp == LB_Infix_Numeric);
+ if (temp == LB_Numeric) {
+ return FALSE;
+ }
+
+ return LB_table[prev][after] - LB_SY_or_IS_then_various
+ == LB_BREAKABLE;
+ }
+
+ case LB_various_then_PO_or_PR + LB_BREAKABLE:
+ case LB_various_then_PO_or_PR + LB_NOBREAK:
+ {
+ /* LB25e NU (SY | IS)* (CL | CP)? × (PO | PR) */
+
+ LB_enum temp = prev;
+ if (temp == LB_Close_Punctuation || temp == LB_Close_Parenthesis)
+ {
+ temp = backup_one_LB(strbeg, &temp_pos, utf8_target);
+ }
+ while (temp == LB_Break_Symbols || temp == LB_Infix_Numeric) {
+ temp = backup_one_LB(strbeg, &temp_pos, utf8_target);
+ }
+ if (temp == LB_Numeric) {
+ return FALSE;
+ }
+ return LB_various_then_PO_or_PR;
+ }
+
+ case LB_RI_then_RI + LB_NOBREAK:
+ case LB_RI_then_RI + LB_BREAKABLE:
+ {
+ int RI_count = 1;
+
+ /* LB30a Break between two regional indicator symbols if and
+ * only if there are an even number of regional indicators
+ * preceding the position of the break.
+ *
+ * sot (RI RI)* RI × RI
+ * [^RI] (RI RI)* RI × RI */
+
+ while (backup_one_LB(strbeg,
+ &temp_pos,
+ utf8_target) == LB_Regional_Indicator)
+ {
+ RI_count++;
+ }
+
+ return RI_count % 2 == 0;
+ }
+
+ default:
+ break;
}
- NOT_REACHED; /* NOTREACHED */
+#ifdef DEBUGGING
+ Perl_re_printf( aTHX_ "Unhandled LB pair: LB_table[%d, %d] = %d\n",
+ before, after, LB_table[before][after]);
+ assert(0);
+#endif
+ return TRUE;
}
-#define SBcase(before, after) ((SB_ENUM_COUNT * before) + after)
+STATIC LB_enum
+S_advance_one_LB(pTHX_ U8 ** curpos, const U8 * const strend, const bool utf8_target)
+{
+ LB_enum lb;
+
+ PERL_ARGS_ASSERT_ADVANCE_ONE_LB;
+
+ if (*curpos >= strend) {
+ return LB_EDGE;
+ }
+
+ if (utf8_target) {
+ *curpos += UTF8SKIP(*curpos);
+ if (*curpos >= strend) {
+ return LB_EDGE;
+ }
+ lb = getLB_VAL_UTF8(*curpos, strend);
+ }
+ else {
+ (*curpos)++;
+ if (*curpos >= strend) {
+ return LB_EDGE;
+ }
+ lb = getLB_VAL_CP(**curpos);
+ }
+
+ return lb;
+}
+
+STATIC LB_enum
+S_backup_one_LB(pTHX_ const U8 * const strbeg, U8 ** curpos, const bool utf8_target)
+{
+ LB_enum lb;
+
+ PERL_ARGS_ASSERT_BACKUP_ONE_LB;
+
+ if (*curpos < strbeg) {
+ return LB_EDGE;
+ }
+
+ if (utf8_target) {
+ U8 * prev_char_pos = reghopmaybe3(*curpos, -1, strbeg);
+ U8 * prev_prev_char_pos;
+
+ if (! prev_char_pos) {
+ return LB_EDGE;
+ }
+
+ if ((prev_prev_char_pos = reghopmaybe3((U8 *) prev_char_pos, -1, strbeg))) {
+ lb = getLB_VAL_UTF8(prev_prev_char_pos, prev_char_pos);
+ *curpos = prev_char_pos;
+ prev_char_pos = prev_prev_char_pos;
+ }
+ else {
+ *curpos = (U8 *) strbeg;
+ return LB_EDGE;
+ }
+ }
+ else {
+ if (*curpos - 2 < strbeg) {
+ *curpos = (U8 *) strbeg;
+ return LB_EDGE;
+ }
+ (*curpos)--;
+ lb = getLB_VAL_CP(*(*curpos - 1));
+ }
+
+ return lb;
+}
STATIC bool
S_isSB(pTHX_ SB_enum before,
* between the inputs. See http://www.unicode.org/reports/tr29/ */
U8 * lpos = (U8 *) curpos;
- U8 * temp_pos;
- SB_enum backup;
+ bool has_para_sep = FALSE;
+ bool has_sp = FALSE;
PERL_ARGS_ASSERT_ISSB;
/* Break at the start and end of text.
SB1. sot ÷
- SB2. ÷ eot */
+ SB2. ÷ eot
+ But unstated in Unicode is don't break if the text is empty */
if (before == SB_EDGE || after == SB_EDGE) {
- return TRUE;
+ return before != after;
}
/* SB 3: Do not break within CRLF. */
return FALSE;
}
- /* Break after paragraph separators. (though why CR and LF are considered
- * so is beyond me (khw)
+ /* Break after paragraph separators. CR and LF are considered
+ * so because Unicode views text as like word processing text where there
+ * are no newlines except between paragraphs, and the word processor takes
+ * care of wrapping without there being hard line-breaks in the text *./
SB4. Sep | CR | LF ÷ */
if (before == SB_Sep || before == SB_CR || before == SB_LF) {
return TRUE;
* (See Section 6.2, Replacing Ignore Rules.)
SB5. X (Extend | Format)* → X */
if (after == SB_Extend || after == SB_Format) {
+
+ /* Implied is that the these characters attach to everything
+ * immediately prior to them except for those separator-type
+ * characters. And the rules earlier have already handled the case
+ * when one of those immediately precedes the extend char */
return FALSE;
}
if (before == SB_Extend || before == SB_Format) {
- before = backup_one_SB(strbeg, &lpos, utf8_target);
+ U8 * temp_pos = lpos;
+ const SB_enum backup = backup_one_SB(strbeg, &temp_pos, utf8_target);
+ if ( backup != SB_EDGE
+ && backup != SB_Sep
+ && backup != SB_CR
+ && backup != SB_LF)
+ {
+ before = backup;
+ lpos = temp_pos;
+ }
+
+ /* Here, both 'before' and 'backup' are these types; implied is that we
+ * don't break between them */
+ if (backup == SB_Extend || backup == SB_Format) {
+ return FALSE;
+ }
}
/* Do not break after ambiguous terminators like period, if they are
/* SB7. (Upper | Lower) ATerm × Upper */
if (before == SB_ATerm && after == SB_Upper) {
- temp_pos = lpos;
- backup = backup_one_SB(strbeg, &temp_pos, utf8_target);
+ U8 * temp_pos = lpos;
+ SB_enum backup = backup_one_SB(strbeg, &temp_pos, utf8_target);
if (backup == SB_Upper || backup == SB_Lower) {
return FALSE;
}
}
- /* SB8a. (STerm | ATerm) Close* Sp* × (SContinue | STerm | ATerm)
- * SB10. (STerm | ATerm) Close* Sp* × ( Sp | Sep | CR | LF ) */
- backup = before;
- temp_pos = lpos;
- while (backup == SB_Sp) {
- backup = backup_one_SB(strbeg, &temp_pos, utf8_target);
- }
- while (backup == SB_Close) {
- backup = backup_one_SB(strbeg, &temp_pos, utf8_target);
- }
- if ((backup == SB_STerm || backup == SB_ATerm)
- && ( after == SB_SContinue
- || after == SB_STerm
- || after == SB_ATerm
- || after == SB_Sp
- || after == SB_Sep
- || after == SB_CR
- || after == SB_LF))
- {
- return FALSE;
+ /* The remaining rules that aren't the final one, all require an STerm or
+ * an ATerm after having backed up over some Close* Sp*, and in one case an
+ * optional Paragraph separator, although one rule doesn't have any Sp's in it.
+ * So do that backup now, setting flags if either Sp or a paragraph
+ * separator are found */
+
+ if (before == SB_Sep || before == SB_CR || before == SB_LF) {
+ has_para_sep = TRUE;
+ before = backup_one_SB(strbeg, &lpos, utf8_target);
}
- /* SB8. ATerm Close* Sp* × ( ¬(OLetter | Upper | Lower | Sep | CR | LF |
- * STerm | ATerm) )* Lower */
- if (backup == SB_ATerm) {
- U8 * rpos = (U8 *) curpos;
- SB_enum later = after;
-
- while ( later != SB_OLetter
- && later != SB_Upper
- && later != SB_Lower
- && later != SB_Sep
- && later != SB_CR
- && later != SB_LF
- && later != SB_STerm
- && later != SB_ATerm
- && later != SB_EDGE)
- {
- later = advance_one_SB(&rpos, strend, utf8_target);
- }
- if (later == SB_Lower) {
- return FALSE;
+ if (before == SB_Sp) {
+ has_sp = TRUE;
+ do {
+ before = backup_one_SB(strbeg, &lpos, utf8_target);
}
+ while (before == SB_Sp);
}
- /* Break after sentence terminators, but include closing punctuation,
- * trailing spaces, and a paragraph separator (if present). [See note
- * below.]
- * SB9. ( STerm | ATerm ) Close* × ( Close | Sp | Sep | CR | LF ) */
- backup = before;
- temp_pos = lpos;
- while (backup == SB_Close) {
- backup = backup_one_SB(strbeg, &temp_pos, utf8_target);
- }
- if ((backup == SB_STerm || backup == SB_ATerm)
- && ( after == SB_Close
- || after == SB_Sp
- || after == SB_Sep
- || after == SB_CR
- || after == SB_LF))
- {
- return FALSE;
+ while (before == SB_Close) {
+ before = backup_one_SB(strbeg, &lpos, utf8_target);
}
+ /* The next few rules apply only when the backed-up-to is an ATerm, and in
+ * most cases an STerm */
+ if (before == SB_STerm || before == SB_ATerm) {
- /* SB11. ( STerm | ATerm ) Close* Sp* ( Sep | CR | LF )? ÷ */
- temp_pos = lpos;
- backup = backup_one_SB(strbeg, &temp_pos, utf8_target);
- if ( backup == SB_Sep
- || backup == SB_CR
- || backup == SB_LF)
- {
- lpos = temp_pos;
- }
- else {
- backup = before;
- }
- while (backup == SB_Sp) {
- backup = backup_one_SB(strbeg, &lpos, utf8_target);
- }
- while (backup == SB_Close) {
- backup = backup_one_SB(strbeg, &lpos, utf8_target);
- }
- if (backup == SB_STerm || backup == SB_ATerm) {
+ /* So, here the lhs matches
+ * (STerm | ATerm) Close* Sp* (Sep | CR | LF)?
+ * and we have set flags if we found an Sp, or the optional Sep,CR,LF.
+ * The rules that apply here are:
+ *
+ * SB8 ATerm Close* Sp* × ( ¬(OLetter | Upper | Lower | Sep | CR
+ | LF | STerm | ATerm) )* Lower
+ SB8a (STerm | ATerm) Close* Sp* × (SContinue | STerm | ATerm)
+ SB9 (STerm | ATerm) Close* × (Close | Sp | Sep | CR | LF)
+ SB10 (STerm | ATerm) Close* Sp* × (Sp | Sep | CR | LF)
+ SB11 (STerm | ATerm) Close* Sp* (Sep | CR | LF)? ÷
+ */
+
+ /* And all but SB11 forbid having seen a paragraph separator */
+ if (! has_para_sep) {
+ if (before == SB_ATerm) { /* SB8 */
+ U8 * rpos = (U8 *) curpos;
+ SB_enum later = after;
+
+ while ( later != SB_OLetter
+ && later != SB_Upper
+ && later != SB_Lower
+ && later != SB_Sep
+ && later != SB_CR
+ && later != SB_LF
+ && later != SB_STerm
+ && later != SB_ATerm
+ && later != SB_EDGE)
+ {
+ later = advance_one_SB(&rpos, strend, utf8_target);
+ }
+ if (later == SB_Lower) {
+ return FALSE;
+ }
+ }
+
+ if ( after == SB_SContinue /* SB8a */
+ || after == SB_STerm
+ || after == SB_ATerm)
+ {
+ return FALSE;
+ }
+
+ if (! has_sp) { /* SB9 applies only if there was no Sp* */
+ if ( after == SB_Close
+ || after == SB_Sp
+ || after == SB_Sep
+ || after == SB_CR
+ || after == SB_LF)
+ {
+ return FALSE;
+ }
+ }
+
+ /* SB10. This and SB9 could probably be combined some way, but khw
+ * has decided to follow the Unicode rule book precisely for
+ * simplified maintenance */
+ if ( after == SB_Sp
+ || after == SB_Sep
+ || after == SB_CR
+ || after == SB_LF)
+ {
+ return FALSE;
+ }
+ }
+
+ /* SB11. */
return TRUE;
}
return sb;
}
-#define WBcase(before, after) ((WB_ENUM_COUNT * before) + after)
-
STATIC bool
S_isWB(pTHX_ WB_enum previous,
WB_enum before,
const bool utf8_target)
{
/* Return a boolean as to if the boundary between 'before' and 'after' is
- * a Unicode word break, using their published algorithm. Context may be
+ * a Unicode word break, using their published algorithm, but tailored for
+ * Perl by treating spans of white space as one unit. Context may be
* needed to make this determination. If the value for the character
* before 'before' is known, it is passed as 'previous'; otherwise that
* should be set to WB_UNKNOWN. The other input parameters give the
U8 * before_pos = (U8 *) curpos;
U8 * after_pos = (U8 *) curpos;
+ WB_enum prev = before;
+ WB_enum next;
PERL_ARGS_ASSERT_ISWB;
- /* WB1 and WB2: Break at the start and end of text. */
- if (before == WB_EDGE || after == WB_EDGE) {
- return TRUE;
- }
+ /* Rule numbers in the comments below are as of Unicode 9.0 */
- /* WB 3: Do not break within CRLF. */
- if (before == WB_CR && after == WB_LF) {
- return FALSE;
- }
+ redo:
+ before = prev;
+ switch (WB_table[before][after]) {
+ case WB_BREAKABLE:
+ return TRUE;
- /* WB 3a and WB 3b: Otherwise break before and after Newlines (including CR
- * and LF) */
- if ( before == WB_CR || before == WB_LF || before == WB_Newline
- || after == WB_CR || after == WB_LF || after == WB_Newline)
- {
- return TRUE;
- }
+ case WB_NOBREAK:
+ return FALSE;
- /* Ignore Format and Extend characters, except when they appear at the
- * beginning of a region of text.
- * WB4. X (Extend | Format)* → X. */
+ case WB_hs_then_hs: /* 2 horizontal spaces in a row */
+ next = advance_one_WB(&after_pos, strend, utf8_target,
+ FALSE /* Don't skip Extend nor Format */ );
+ /* A space immediately preceeding an Extend or Format is attached
+ * to by them, and hence gets separated from previous spaces.
+ * Otherwise don't break between horizontal white space */
+ return next == WB_Extend || next == WB_Format;
+
+ /* WB4 Ignore Format and Extend characters, except when they appear at
+ * the beginning of a region of text. This code currently isn't
+ * general purpose, but it works as the rules are currently and likely
+ * to be laid out. The reason it works is that when 'they appear at
+ * the beginning of a region of text', the rule is to break before
+ * them, just like any other character. Therefore, the default rule
+ * applies and we don't have to look in more depth. Should this ever
+ * change, we would have to have 2 'case' statements, like in the rules
+ * below, and backup a single character (not spacing over the extend
+ * ones) and then see if that is one of the region-end characters and
+ * go from there */
+ case WB_Ex_or_FO_or_ZWJ_then_foo:
+ prev = backup_one_WB(&previous, strbeg, &before_pos, utf8_target);
+ goto redo;
+
+ case WB_DQ_then_HL + WB_BREAKABLE:
+ case WB_DQ_then_HL + WB_NOBREAK:
+
+ /* WB7c Hebrew_Letter Double_Quote × Hebrew_Letter */
+
+ if (backup_one_WB(&previous, strbeg, &before_pos, utf8_target)
+ == WB_Hebrew_Letter)
+ {
+ return FALSE;
+ }
- if (after == WB_Extend || after == WB_Format) {
- return FALSE;
- }
+ return WB_table[before][after] - WB_DQ_then_HL == WB_BREAKABLE;
- if (before == WB_Extend || before == WB_Format) {
- before = backup_one_WB(&previous, strbeg, &before_pos, utf8_target);
- }
+ case WB_HL_then_DQ + WB_BREAKABLE:
+ case WB_HL_then_DQ + WB_NOBREAK:
- switch (WBcase(before, after)) {
- /* Otherwise, break everywhere (including around ideographs).
- WB14. Any ÷ Any */
- default:
- return TRUE;
+ /* WB7b Hebrew_Letter × Double_Quote Hebrew_Letter */
- /* Do not break between most letters.
- WB5. (ALetter | Hebrew_Letter) × (ALetter | Hebrew_Letter) */
- case WBcase(WB_ALetter, WB_ALetter):
- case WBcase(WB_ALetter, WB_Hebrew_Letter):
- case WBcase(WB_Hebrew_Letter, WB_ALetter):
- case WBcase(WB_Hebrew_Letter, WB_Hebrew_Letter):
+ if (advance_one_WB(&after_pos, strend, utf8_target,
+ TRUE /* Do skip Extend and Format */ )
+ == WB_Hebrew_Letter)
+ {
return FALSE;
+ }
- /* Do not break letters across certain punctuation.
- WB6. (ALetter | Hebrew_Letter)
- × (MidLetter | MidNumLet | Single_Quote) (ALetter
- | Hebrew_Letter) */
- case WBcase(WB_ALetter, WB_MidLetter):
- case WBcase(WB_ALetter, WB_MidNumLet):
- case WBcase(WB_ALetter, WB_Single_Quote):
- case WBcase(WB_Hebrew_Letter, WB_MidLetter):
- case WBcase(WB_Hebrew_Letter, WB_MidNumLet):
- /*case WBcase(WB_Hebrew_Letter, WB_Single_Quote):*/
- after = advance_one_WB(&after_pos, strend, utf8_target);
- return after != WB_ALetter && after != WB_Hebrew_Letter;
-
- /* WB7. (ALetter | Hebrew_Letter) (MidLetter | MidNumLet |
- * Single_Quote) × (ALetter | Hebrew_Letter) */
- case WBcase(WB_MidLetter, WB_ALetter):
- case WBcase(WB_MidLetter, WB_Hebrew_Letter):
- case WBcase(WB_MidNumLet, WB_ALetter):
- case WBcase(WB_MidNumLet, WB_Hebrew_Letter):
- case WBcase(WB_Single_Quote, WB_ALetter):
- case WBcase(WB_Single_Quote, WB_Hebrew_Letter):
- before
- = backup_one_WB(&previous, strbeg, &before_pos, utf8_target);
- return before != WB_ALetter && before != WB_Hebrew_Letter;
-
- /* WB7a. Hebrew_Letter × Single_Quote */
- case WBcase(WB_Hebrew_Letter, WB_Single_Quote):
- return FALSE;
+ return WB_table[before][after] - WB_HL_then_DQ == WB_BREAKABLE;
- /* WB7b. Hebrew_Letter × Double_Quote Hebrew_Letter */
- case WBcase(WB_Hebrew_Letter, WB_Double_Quote):
- return advance_one_WB(&after_pos, strend, utf8_target)
- != WB_Hebrew_Letter;
+ case WB_LE_or_HL_then_MB_or_ML_or_SQ + WB_NOBREAK:
+ case WB_LE_or_HL_then_MB_or_ML_or_SQ + WB_BREAKABLE:
- /* WB7c. Hebrew_Letter Double_Quote × Hebrew_Letter */
- case WBcase(WB_Double_Quote, WB_Hebrew_Letter):
- return backup_one_WB(&previous, strbeg, &before_pos, utf8_target)
- != WB_Hebrew_Letter;
+ /* WB6 (ALetter | Hebrew_Letter) × (MidLetter | MidNumLet
+ * | Single_Quote) (ALetter | Hebrew_Letter) */
- /* Do not break within sequences of digits, or digits adjacent to
- * letters (“3a”, or “A3”).
- WB8. Numeric × Numeric */
- case WBcase(WB_Numeric, WB_Numeric):
- return FALSE;
+ next = advance_one_WB(&after_pos, strend, utf8_target,
+ TRUE /* Do skip Extend and Format */ );
- /* WB9. (ALetter | Hebrew_Letter) × Numeric */
- case WBcase(WB_ALetter, WB_Numeric):
- case WBcase(WB_Hebrew_Letter, WB_Numeric):
+ if (next == WB_ALetter || next == WB_Hebrew_Letter)
+ {
return FALSE;
+ }
- /* WB10. Numeric × (ALetter | Hebrew_Letter) */
- case WBcase(WB_Numeric, WB_ALetter):
- case WBcase(WB_Numeric, WB_Hebrew_Letter):
- return FALSE;
+ return WB_table[before][after]
+ - WB_LE_or_HL_then_MB_or_ML_or_SQ == WB_BREAKABLE;
- /* Do not break within sequences, such as “3.2” or “3,456.789”.
- WB11. Numeric (MidNum | MidNumLet | Single_Quote) × Numeric
- */
- case WBcase(WB_MidNum, WB_Numeric):
- case WBcase(WB_MidNumLet, WB_Numeric):
- case WBcase(WB_Single_Quote, WB_Numeric):
- return backup_one_WB(&previous, strbeg, &before_pos, utf8_target)
- != WB_Numeric;
-
- /* WB12. Numeric × (MidNum | MidNumLet | Single_Quote) Numeric
- * */
- case WBcase(WB_Numeric, WB_MidNum):
- case WBcase(WB_Numeric, WB_MidNumLet):
- case WBcase(WB_Numeric, WB_Single_Quote):
- return advance_one_WB(&after_pos, strend, utf8_target)
- != WB_Numeric;
-
- /* Do not break between Katakana.
- WB13. Katakana × Katakana */
- case WBcase(WB_Katakana, WB_Katakana):
- return FALSE;
+ case WB_MB_or_ML_or_SQ_then_LE_or_HL + WB_NOBREAK:
+ case WB_MB_or_ML_or_SQ_then_LE_or_HL + WB_BREAKABLE:
- /* Do not break from extenders.
- WB13a. (ALetter | Hebrew_Letter | Numeric | Katakana |
- ExtendNumLet) × ExtendNumLet */
- case WBcase(WB_ALetter, WB_ExtendNumLet):
- case WBcase(WB_Hebrew_Letter, WB_ExtendNumLet):
- case WBcase(WB_Numeric, WB_ExtendNumLet):
- case WBcase(WB_Katakana, WB_ExtendNumLet):
- case WBcase(WB_ExtendNumLet, WB_ExtendNumLet):
+ /* WB7 (ALetter | Hebrew_Letter) (MidLetter | MidNumLet
+ * | Single_Quote) × (ALetter | Hebrew_Letter) */
+
+ prev = backup_one_WB(&previous, strbeg, &before_pos, utf8_target);
+ if (prev == WB_ALetter || prev == WB_Hebrew_Letter)
+ {
return FALSE;
+ }
+
+ return WB_table[before][after]
+ - WB_MB_or_ML_or_SQ_then_LE_or_HL == WB_BREAKABLE;
+
+ case WB_MB_or_MN_or_SQ_then_NU + WB_NOBREAK:
+ case WB_MB_or_MN_or_SQ_then_NU + WB_BREAKABLE:
+
+ /* WB11 Numeric (MidNum | (MidNumLet | Single_Quote)) × Numeric
+ * */
- /* WB13b. ExtendNumLet × (ALetter | Hebrew_Letter | Numeric
- * | Katakana) */
- case WBcase(WB_ExtendNumLet, WB_ALetter):
- case WBcase(WB_ExtendNumLet, WB_Hebrew_Letter):
- case WBcase(WB_ExtendNumLet, WB_Numeric):
- case WBcase(WB_ExtendNumLet, WB_Katakana):
+ if (backup_one_WB(&previous, strbeg, &before_pos, utf8_target)
+ == WB_Numeric)
+ {
return FALSE;
+ }
+
+ return WB_table[before][after]
+ - WB_MB_or_MN_or_SQ_then_NU == WB_BREAKABLE;
+
+ case WB_NU_then_MB_or_MN_or_SQ + WB_NOBREAK:
+ case WB_NU_then_MB_or_MN_or_SQ + WB_BREAKABLE:
- /* Do not break between regional indicator symbols.
- WB13c. Regional_Indicator × Regional_Indicator */
- case WBcase(WB_Regional_Indicator, WB_Regional_Indicator):
+ /* WB12 Numeric × (MidNum | MidNumLet | Single_Quote) Numeric */
+
+ if (advance_one_WB(&after_pos, strend, utf8_target,
+ TRUE /* Do skip Extend and Format */ )
+ == WB_Numeric)
+ {
return FALSE;
+ }
+
+ return WB_table[before][after]
+ - WB_NU_then_MB_or_MN_or_SQ == WB_BREAKABLE;
+
+ case WB_RI_then_RI + WB_NOBREAK:
+ case WB_RI_then_RI + WB_BREAKABLE:
+ {
+ int RI_count = 1;
+
+ /* Do not break within emoji flag sequences. That is, do not
+ * break between regional indicator (RI) symbols if there is an
+ * odd number of RI characters before the potential break
+ * point.
+ *
+ * WB15 sot (RI RI)* RI × RI
+ * WB16 [^RI] (RI RI)* RI × RI */
+ while (backup_one_WB(&previous,
+ strbeg,
+ &before_pos,
+ utf8_target) == WB_Regional_Indicator)
+ {
+ RI_count++;
+ }
+
+ return RI_count % 2 != 1;
+ }
+
+ default:
+ break;
}
- NOT_REACHED; /* NOTREACHED */
+#ifdef DEBUGGING
+ Perl_re_printf( aTHX_ "Unhandled WB pair: WB_table[%d, %d] = %d\n",
+ before, after, WB_table[before][after]);
+ assert(0);
+#endif
+ return TRUE;
}
STATIC WB_enum
-S_advance_one_WB(pTHX_ U8 ** curpos, const U8 * const strend, const bool utf8_target)
+S_advance_one_WB(pTHX_ U8 ** curpos,
+ const U8 * const strend,
+ const bool utf8_target,
+ const bool skip_Extend_Format)
{
WB_enum wb;
return WB_EDGE;
}
wb = getWB_VAL_UTF8(*curpos, strend);
- } while (wb == WB_Extend || wb == WB_Format);
+ } while ( skip_Extend_Format
+ && (wb == WB_Extend || wb == WB_Format));
}
else {
do {
return WB_EDGE;
}
wb = getWB_VAL_CP(**curpos);
- } while (wb == WB_Extend || wb == WB_Format);
+ } while ( skip_Extend_Format
+ && (wb == WB_Extend || wb == WB_Format));
}
return wb;
*previous = (*curpos <= strbeg) ? WB_EDGE : WB_UNKNOWN;
}
- /* And we always back up over these two types */
- if (wb != WB_Extend && wb != WB_Format) {
+ /* And we always back up over these three types */
+ if (wb != WB_Extend && wb != WB_Format && wb != WB_ZWJ) {
return wb;
}
}
*curpos = (U8 *) strbeg;
return WB_EDGE;
}
- } while (wb == WB_Extend || wb == WB_Format);
+ } while (wb == WB_Extend || wb == WB_Format || wb == WB_ZWJ);
}
else {
do {
return wb;
}
+#define EVAL_CLOSE_PAREN_IS(st,expr) \
+( \
+ ( ( st ) ) && \
+ ( ( st )->u.eval.close_paren ) && \
+ ( ( ( st )->u.eval.close_paren ) == ( (expr) + 1 ) ) \
+)
+
+#define EVAL_CLOSE_PAREN_IS_TRUE(st,expr) \
+( \
+ ( ( st ) ) && \
+ ( ( st )->u.eval.close_paren ) && \
+ ( ( expr ) ) && \
+ ( ( ( st )->u.eval.close_paren ) == ( (expr) + 1 ) ) \
+)
+
+
+#define EVAL_CLOSE_PAREN_SET(st,expr) \
+ (st)->u.eval.close_paren = ( (expr) + 1 )
+
+#define EVAL_CLOSE_PAREN_CLEAR(st) \
+ (st)->u.eval.close_paren = 0
+
/* returns -1 on failure, $+[0] on success */
STATIC SSize_t
S_regmatch(pTHX_ regmatch_info *reginfo, char *startpos, regnode *prog)
{
-#if PERL_VERSION < 9 && !defined(PERL_CORE)
- dMY_CXT;
-#endif
dVAR;
const bool utf8_target = reginfo->is_utf8_target;
const U32 uniflags = UTF8_ALLOW_DEFAULT;
regnode *next;
U32 n = 0; /* general value; init to avoid compiler warning */
SSize_t ln = 0; /* len or last; init to avoid compiler warning */
+ SSize_t endref = 0; /* offset of end of backref when ln is start */
char *locinput = startpos;
char *pushinput; /* where to continue after a PUSH */
- I32 nextchr; /* is always set to UCHARAT(locinput) */
+ I32 nextchr; /* is always set to UCHARAT(locinput), or -1 at EOS */
bool result = 0; /* return value of S_regmatch */
- int depth = 0; /* depth of backtrack stack */
+ U32 depth = 0; /* depth of backtrack stack */
U32 nochange_depth = 0; /* depth of GOSUB recursion with nochange */
const U32 max_nochange_depth =
(3 * rex->nparens > MAX_RECURSE_EVAL_NOCHANGE_DEPTH) ?
SV *sv_yes_mark = NULL; /* last mark name we have seen
during a successful match */
U32 lastopen = 0; /* last open we saw */
- bool has_cutgroup = RX_HAS_CUTGROUP(rex) ? 1 : 0;
+ bool has_cutgroup = RXp_HAS_CUTGROUP(rex) ? 1 : 0;
SV* const oreplsv = GvSVn(PL_replgv);
/* these three flags are set by various ops to signal information to
* the very next op. They have a useful lifetime of exactly one loop
*/
PAD* last_pad = NULL;
dMULTICALL;
- I32 gimme = G_SCALAR;
+ U8 gimme = G_SCALAR;
CV *caller_cv = NULL; /* who called us */
CV *last_pushed_cv = NULL; /* most recently called (?{}) CV */
- CHECKPOINT runops_cp; /* savestack position before executing EVAL */
U32 maxopenparen = 0; /* max '(' index seen so far */
int to_complement; /* Invert the result? */
_char_class_number classnum;
bool is_utf8_pat = reginfo->is_utf8_pat;
bool match = FALSE;
+ I32 orig_savestack_ix = PL_savestack_ix;
+/* Solaris Studio 12.3 messes up fetching PL_charclass['\n'] */
+#if (defined(__SUNPRO_C) && (__SUNPRO_C == 0x5120) && defined(__x86_64) && defined(USE_64_BIT_ALL))
+# define SOLARIS_BAD_OPTIMIZER
+ const U32 *pl_charclass_dup = PL_charclass;
+# define PL_charclass pl_charclass_dup
+#endif
#ifdef DEBUGGING
GET_RE_DEBUG_FLAGS_DECL;
/* shut up 'may be used uninitialized' compiler warnings for dMULTICALL */
multicall_oldcatch = 0;
- multicall_cv = NULL;
- cx = NULL;
PERL_UNUSED_VAR(multicall_cop);
- PERL_UNUSED_VAR(newsp);
-
PERL_ARGS_ASSERT_REGMATCH;
- DEBUG_OPTIMISE_r( DEBUG_EXECUTE_r({
- PerlIO_printf(Perl_debug_log,"regmatch start\n");
- }));
-
st = PL_regmatch_state;
/* Note that nextchr is a byte even in UTF */
SET_nextchr;
scan = prog;
+
+ DEBUG_OPTIMISE_r( DEBUG_EXECUTE_r({
+ DUMP_EXEC_POS( locinput, scan, utf8_target, depth );
+ Perl_re_printf( aTHX_ "regmatch start\n" );
+ }));
+
while (scan != NULL) {
- DEBUG_EXECUTE_r( {
- SV * const prop = sv_newmortal();
- regnode *rnext=regnext(scan);
- DUMP_EXEC_POS( locinput, scan, utf8_target );
- regprop(rex, prop, scan, reginfo, NULL);
-
- PerlIO_printf(Perl_debug_log,
- "%3"IVdf":%*s%s(%"IVdf")\n",
- (IV)(scan - rexi->program), depth*2, "",
- SvPVX_const(prop),
- (PL_regkind[OP(scan)] == END || !rnext) ?
- 0 : (IV)(rnext - rexi->program));
- });
next = scan + NEXT_OFF(scan);
if (next == scan)
state_num = OP(scan);
reenter_switch:
+ DEBUG_EXECUTE_r(
+ if (state_num <= REGNODE_MAX) {
+ SV * const prop = sv_newmortal();
+ regnode *rnext = regnext(scan);
+
+ DUMP_EXEC_POS( locinput, scan, utf8_target, depth );
+ regprop(rex, prop, scan, reginfo, NULL);
+ Perl_re_printf( aTHX_
+ "%*s%" IVdf ":%s(%" IVdf ")\n",
+ INDENT_CHARS(depth), "",
+ (IV)(scan - rexi->program),
+ SvPVX_const(prop),
+ (PL_regkind[OP(scan)] == END || !rnext) ?
+ 0 : (IV)(rnext - rexi->program));
+ }
+ );
+
to_complement = 0;
SET_nextchr;
st->u.keeper.val = rex->offs[0].start;
rex->offs[0].start = locinput - reginfo->strbeg;
PUSH_STATE_GOTO(KEEPS_next, next, locinput);
- /* NOTREACHED */
NOT_REACHED; /* NOTREACHED */
case KEEPS_next_fail:
/* rollback the start point change */
rex->offs[0].start = st->u.keeper.val;
sayNO_SILENT;
- /* NOTREACHED */
NOT_REACHED; /* NOTREACHED */
case MEOL: /* /..$/m */
*/
if(!NEXTCHR_IS_EOS && !ANYOF_BITMAP_TEST(scan, nextchr)) {
DEBUG_EXECUTE_r(
- PerlIO_printf(Perl_debug_log,
- "%*s %sfailed to match trie start class...%s\n",
- REPORT_CODE_OFF+depth*2, "", PL_colors[4], PL_colors[5])
+ Perl_re_exec_indentf( aTHX_ "%sfailed to match trie start class...%s\n",
+ depth, PL_colors[4], PL_colors[5])
);
sayNO_SILENT;
- /* NOTREACHED */
NOT_REACHED; /* NOTREACHED */
}
/* FALLTHROUGH */
if (scan->flags == EXACTL || scan->flags == EXACTFLU8) {
_CHECK_AND_WARN_PROBLEMATIC_LOCALE;
if (utf8_target
+ && nextchr >= 0 /* guard against negative EOS value in nextchr */
&& UTF8_IS_ABOVE_LATIN1(nextchr)
&& scan->flags == EXACTL)
{
{
if (trie->states[ state ].wordnum) {
DEBUG_EXECUTE_r(
- PerlIO_printf(Perl_debug_log,
- "%*s %smatched empty string...%s\n",
- REPORT_CODE_OFF+depth*2, "", PL_colors[4], PL_colors[5])
+ Perl_re_exec_indentf( aTHX_ "%smatched empty string...%s\n",
+ depth, PL_colors[4], PL_colors[5])
);
if (!trie->jump)
break;
} else {
DEBUG_EXECUTE_r(
- PerlIO_printf(Perl_debug_log,
- "%*s %sfailed to match trie start class...%s\n",
- REPORT_CODE_OFF+depth*2, "", PL_colors[4], PL_colors[5])
+ Perl_re_exec_indentf( aTHX_ "%sfailed to match trie start class...%s\n",
+ depth, PL_colors[4], PL_colors[5])
);
sayNO_SILENT;
}
}
DEBUG_TRIE_EXECUTE_r({
- DUMP_EXEC_POS( (char *)uc, scan, utf8_target );
- PerlIO_printf( Perl_debug_log,
- "%*s %sState: %4"UVxf" Accepted: %c ",
- 2+depth * 2, "", PL_colors[4],
+ DUMP_EXEC_POS( (char *)uc, scan, utf8_target, depth );
+ /* HERE */
+ PerlIO_printf( Perl_debug_log,
+ "%*s%sState: %4" UVxf " Accepted: %c ",
+ INDENT_CHARS(depth), "", PL_colors[4],
(UV)state, (accepted ? 'Y' : 'N'));
});
state = 0;
}
DEBUG_TRIE_EXECUTE_r(
- PerlIO_printf( Perl_debug_log,
- "Charid:%3x CP:%4"UVxf" After State: %4"UVxf"%s\n",
+ Perl_re_printf( aTHX_
+ "Charid:%3x CP:%4" UVxf " After State: %4" UVxf "%s\n",
charid, uvc, (UV)state, PL_colors[5] );
);
}
}
DEBUG_EXECUTE_r(
- PerlIO_printf( Perl_debug_log,
- "%*s %sgot %"IVdf" possible matches%s\n",
- REPORT_CODE_OFF + depth * 2, "",
+ Perl_re_exec_indentf( aTHX_ "%sgot %" IVdf " possible matches%s\n",
+ depth,
PL_colors[4], (IV)ST.accepted, PL_colors[5] );
);
goto trie_first_try; /* jump into the fail handler */
}}
- /* NOTREACHED */
NOT_REACHED; /* NOTREACHED */
case TRIE_next_fail: /* we failed - try next alternative */
{
U8 *uc;
- if ( ST.jump) {
+ if ( ST.jump ) {
+ /* undo any captures done in the tail part of a branch,
+ * e.g.
+ * /(?:X(.)(.)|Y(.)).../
+ * where the trie just matches X then calls out to do the
+ * rest of the branch */
REGCP_UNWIND(ST.cp);
UNWIND_PAREN(ST.lastparen, ST.lastcloseparen);
}
if (!--ST.accepted) {
DEBUG_EXECUTE_r({
- PerlIO_printf( Perl_debug_log,
- "%*s %sTRIE failed...%s\n",
- REPORT_CODE_OFF+depth*2, "",
+ Perl_re_exec_indentf( aTHX_ "%sTRIE failed...%s\n",
+ depth,
PL_colors[4],
PL_colors[5] );
});
no_final = 0;
}
- if ( ST.jump) {
+ if ( ST.jump ) {
ST.lastparen = rex->lastparen;
ST.lastcloseparen = rex->lastcloseparen;
REGCP_SET(ST.cp);
: NEXT_OFF(ST.me));
DEBUG_EXECUTE_r({
- PerlIO_printf( Perl_debug_log,
- "%*s %sTRIE matched word #%d, continuing%s\n",
- REPORT_CODE_OFF+depth*2, "",
+ Perl_re_exec_indentf( aTHX_ "%sTRIE matched word #%d, continuing%s\n",
+ depth,
PL_colors[4],
ST.nextword,
PL_colors[5]
);
});
- if (ST.accepted > 1 || has_cutgroup) {
+ if ( ST.accepted > 1 || has_cutgroup || ST.jump ) {
PUSH_STATE_GOTO(TRIE_next, scan, (char*)uc);
- /* NOTREACHED */
NOT_REACHED; /* NOTREACHED */
}
/* only one choice left - just continue */
? av_fetch(trie_words, ST.nextword - 1, 0) : NULL;
SV *sv= tmp ? sv_newmortal() : NULL;
- PerlIO_printf( Perl_debug_log,
- "%*s %sonly one match left, short-circuiting: #%d <%s>%s\n",
- REPORT_CODE_OFF+depth*2, "", PL_colors[4],
+ Perl_re_exec_indentf( aTHX_ "%sonly one match left, short-circuiting: #%d <%s>%s\n",
+ depth, PL_colors[4],
ST.nextword,
tmp ? pv_pretty(sv, SvPV_nolen_const(*tmp), SvCUR(*tmp), 0,
PL_colors[0], PL_colors[1],
if (locinput == reginfo->strbeg)
b1 = isWORDCHAR_LC('\n');
else {
- b1 = isWORDCHAR_LC_utf8(reghop3((U8*)locinput, -1,
- (U8*)(reginfo->strbeg)));
+ b1 = isWORDCHAR_LC_utf8_safe(reghop3((U8*)locinput, -1,
+ (U8*)(reginfo->strbeg)),
+ (U8*)(reginfo->strend));
}
b2 = (NEXTCHR_IS_EOS)
? isWORDCHAR_LC('\n')
- : isWORDCHAR_LC_utf8((U8*)locinput);
+ : isWORDCHAR_LC_utf8_safe((U8*) locinput,
+ (U8*) reginfo->strend);
}
else { /* Here the string isn't utf8 */
b1 = (locinput == reginfo->strbeg)
bool b1, b2;
b1 = (locinput == reginfo->strbeg)
? 0 /* isWORDCHAR_L1('\n') */
- : isWORDCHAR_utf8(reghop3((U8*)locinput, -1,
- (U8*)(reginfo->strbeg)));
+ : isWORDCHAR_utf8_safe(
+ reghop3((U8*)locinput,
+ -1,
+ (U8*)(reginfo->strbeg)),
+ (U8*) reginfo->strend);
b2 = (NEXTCHR_IS_EOS)
? 0 /* isWORDCHAR_L1('\n') */
- : isWORDCHAR_utf8((U8*)locinput);
+ : isWORDCHAR_utf8_safe((U8*)locinput,
+ (U8*) reginfo->strend);
match = cBOOL(b1 != b2);
break;
}
(U8*)(reginfo->strbeg)),
(U8*) reginfo->strend),
getGCB_VAL_UTF8((U8*) locinput,
- (U8*) reginfo->strend));
+ (U8*) reginfo->strend),
+ (U8*) reginfo->strbeg,
+ (U8*) locinput,
+ utf8_target);
+ }
+ break;
+
+ case LB_BOUND:
+ if (locinput == reginfo->strbeg) {
+ match = FALSE;
+ }
+ else if (NEXTCHR_IS_EOS) {
+ match = TRUE;
+ }
+ else {
+ match = isLB(getLB_VAL_UTF8(
+ reghop3((U8*)locinput,
+ -1,
+ (U8*)(reginfo->strbeg)),
+ (U8*) reginfo->strend),
+ getLB_VAL_UTF8((U8*) locinput,
+ (U8*) reginfo->strend),
+ (U8*) reginfo->strbeg,
+ (U8*) locinput,
+ (U8*) reginfo->strend,
+ utf8_target);
}
break;
}
break;
+ case LB_BOUND:
+ if (locinput == reginfo->strbeg) {
+ match = FALSE;
+ }
+ else if (NEXTCHR_IS_EOS) {
+ match = TRUE;
+ }
+ else {
+ match = isLB(getLB_VAL_CP(UCHARAT(locinput -1)),
+ getLB_VAL_CP(UCHARAT(locinput)),
+ (U8*) reginfo->strbeg,
+ (U8*) locinput,
+ (U8*) reginfo->strend,
+ utf8_target);
+ }
+ break;
+
case SB_BOUND: /* Always matches at begin and end */
if (locinput == reginfo->strbeg || NEXTCHR_IS_EOS) {
match = TRUE;
case ANYOFL: /* /[abc]/l */
_CHECK_AND_WARN_PROBLEMATIC_LOCALE;
- if ((FLAGS(scan) & ANYOFL_UTF8_LOCALE_REQD) && ! IN_UTF8_CTYPE_LOCALE)
+ if (ANYOFL_UTF8_LOCALE_REQD(FLAGS(scan)) && ! IN_UTF8_CTYPE_LOCALE)
{
Perl_ck_warner(aTHX_ packWARN(WARN_LOCALE), utf8_locale_required);
}
case ANYOF: /* /[abc]/ */
if (NEXTCHR_IS_EOS)
sayNO;
- if (utf8_target) {
+ if (utf8_target && ! UTF8_IS_INVARIANT(*locinput)) {
if (!reginclass(rex, scan, (U8*)locinput, (U8*)reginfo->strend,
utf8_target))
sayNO;
locinput += UTF8SKIP(locinput);
}
else {
- if (!REGINCLASS(rex, scan, (U8*)locinput))
+ if (!REGINCLASS(rex, scan, (U8*)locinput, utf8_target))
sayNO;
locinput++;
}
if (! (to_complement ^ cBOOL(isFOO_lc(FLAGS(scan), (U8) nextchr)))) {
sayNO;
}
+
+ locinput++;
+ break;
}
- else if (UTF8_IS_DOWNGRADEABLE_START(nextchr)) {
- if (! (to_complement ^ cBOOL(isFOO_lc(FLAGS(scan),
- EIGHT_BIT_UTF8_TO_NATIVE(nextchr,
- *(locinput + 1))))))
- {
- sayNO;
- }
- }
- else { /* Here, must be an above Latin-1 code point */
- _CHECK_AND_OUTPUT_WIDE_LOCALE_UTF8_MSG(locinput, reginfo->strend);
+
+ if (! UTF8_IS_NEXT_CHAR_DOWNGRADEABLE(locinput, reginfo->strend)) {
+ /* An above Latin-1 code point, or malformed */
+ _CHECK_AND_OUTPUT_WIDE_LOCALE_UTF8_MSG(locinput,
+ reginfo->strend);
goto utf8_posix_above_latin1;
}
- /* Here, must be utf8 */
- locinput += UTF8SKIP(locinput);
- break;
+ /* Here is a UTF-8 variant code point below 256 and the target is
+ * UTF-8 */
+ if (! (to_complement ^ cBOOL(isFOO_lc(FLAGS(scan),
+ EIGHT_BIT_UTF8_TO_NATIVE(nextchr,
+ *(locinput + 1))))))
+ {
+ sayNO;
+ }
+
+ goto increment_locinput;
case NPOSIXD: /* \W or [:^punct:] etc. under /d */
to_complement = 1;
}
to_complement = 1;
- /* FALLTHROUGH */
+ goto join_nposixa;
case POSIXA: /* \w or [:punct:] etc. under /a */
* UTF-8, and also from NPOSIXA even in UTF-8 when the current
* character is a single byte */
- if (NEXTCHR_IS_EOS
- || ! (to_complement ^ cBOOL(_generic_isCC_A(nextchr,
- FLAGS(scan)))))
+ if (NEXTCHR_IS_EOS) {
+ sayNO;
+ }
+
+ join_nposixa:
+
+ if (! (to_complement ^ cBOOL(_generic_isCC_A(nextchr,
+ FLAGS(scan)))))
{
sayNO;
}
}
locinput++;
}
- else if (UTF8_IS_DOWNGRADEABLE_START(nextchr)) {
+ else if (UTF8_IS_NEXT_CHAR_DOWNGRADEABLE(locinput, reginfo->strend)) {
if (! (to_complement
^ cBOOL(_generic_isCC(EIGHT_BIT_UTF8_TO_NATIVE(nextchr,
*(locinput + 1)),
while (locinput < reginfo->strend) {
GCB_enum cur_gcb = getGCB_VAL_UTF8((U8*) locinput,
(U8*) reginfo->strend);
- if (isGCB(prev_gcb, cur_gcb)) {
+ if (isGCB(prev_gcb, cur_gcb,
+ (U8*) reginfo->strbeg, (U8*) locinput,
+ utf8_target))
+ {
break;
}
do_nref_ref_common:
ln = rex->offs[n].start;
+ endref = rex->offs[n].end;
reginfo->poscache_iter = reginfo->poscache_maxiter; /* Void cache */
- if (rex->lastparen < n || ln == -1)
+ if (rex->lastparen < n || ln == -1 || endref == -1)
sayNO; /* Do not match unless seen CLOSEn. */
- if (ln == rex->offs[n].end)
+ if (ln == endref)
break;
s = reginfo->strbeg + ln;
* not going off the end given by reginfo->strend, and
* returns in <limit> upon success, how much of the
* current input was matched */
- if (! foldEQ_utf8_flags(s, NULL, rex->offs[n].end - ln, utf8_target,
+ if (! foldEQ_utf8_flags(s, NULL, endref - ln, utf8_target,
locinput, &limit, 0, utf8_target, utf8_fold_flags))
{
sayNO;
(type == REF ||
UCHARAT(s) != fold_array[nextchr]))
sayNO;
- ln = rex->offs[n].end - ln;
+ ln = endref - ln;
if (locinput + ln > reginfo->strend)
sayNO;
if (ln > 1 && (type == REF
#undef ST
#define ST st->u.eval
+#define CUR_EVAL cur_eval->u.eval
+
{
SV *ret;
REGEXP *re_sv;
regexp *re;
regexp_internal *rei;
regnode *startpoint;
+ U32 arg;
- case GOSTART: /* (?R) */
case GOSUB: /* /(...(?1))/ /(...(?&foo))/ */
- if (cur_eval && cur_eval->locinput==locinput) {
- if (cur_eval->u.eval.close_paren == (U32)ARG(scan))
- Perl_croak(aTHX_ "Infinite recursion in regex");
+ arg= (U32)ARG(scan);
+ if (cur_eval && cur_eval->locinput == locinput) {
if ( ++nochange_depth > max_nochange_depth )
Perl_croak(aTHX_
"Pattern subroutine nesting without pos change"
re_sv = rex_sv;
re = rex;
rei = rexi;
- if (OP(scan)==GOSUB) {
- startpoint = scan + ARG2L(scan);
- ST.close_paren = ARG(scan);
+ startpoint = scan + ARG2L(scan);
+ EVAL_CLOSE_PAREN_SET( st, arg );
+ /* Detect infinite recursion
+ *
+ * A pattern like /(?R)foo/ or /(?<x>(?&y)foo)(?<y>(?&x)bar)/
+ * or "a"=~/(.(?2))((?<=(?=(?1)).))/ could recurse forever.
+ * So we track the position in the string we are at each time
+ * we recurse and if we try to enter the same routine twice from
+ * the same position we throw an error.
+ */
+ if ( rex->recurse_locinput[arg] == locinput ) {
+ /* FIXME: we should show the regop that is failing as part
+ * of the error message. */
+ Perl_croak(aTHX_ "Infinite recursion in regex");
} else {
- startpoint = rei->program+1;
- ST.close_paren = 0;
+ ST.prev_recurse_locinput= rex->recurse_locinput[arg];
+ rex->recurse_locinput[arg]= locinput;
+
+ DEBUG_r({
+ GET_RE_DEBUG_FLAGS_DECL;
+ DEBUG_STACK_r({
+ Perl_re_exec_indentf( aTHX_
+ "entering GOSUB, prev_recurse_locinput=%p recurse_locinput[%d]=%p\n",
+ depth, ST.prev_recurse_locinput, arg, rex->recurse_locinput[arg]
+ );
+ });
+ });
}
/* Save all the positions seen so far. */
goto eval_recurse_doit;
/* NOTREACHED */
- case EVAL: /* /(?{A})B/ /(??{A})B/ and /(?(?{A})X|Y)B/ */
+ case EVAL: /* /(?{...})B/ /(??{A})B/ and /(?(?{...})X|Y)B/ */
if (cur_eval && cur_eval->locinput==locinput) {
if ( ++nochange_depth > max_nochange_depth )
Perl_croak(aTHX_ "EVAL without pos change exceeded limit in regex");
CV *newcv;
/* save *all* paren positions */
- regcppush(rex, 0, maxopenparen);
- REGCP_SET(runops_cp);
+ regcppush(rex, 0, maxopenparen);
+ REGCP_SET(ST.lastcp);
if (!caller_cv)
caller_cv = find_runcv(NULL);
n = ARG(scan);
if (rexi->data->what[n] == 'r') { /* code from an external qr */
- newcv = (ReANY(
- (REGEXP*)(rexi->data->data[n])
- ))->qr_anoncv
- ;
+ newcv = (ReANY(
+ (REGEXP*)(rexi->data->data[n])
+ ))->qr_anoncv;
nop = (OP*)rexi->data->data[n+1];
}
else if (rexi->data->what[n] == 'l') { /* literal code */
nop = (OP*)rexi->data->data[n];
}
- /* normally if we're about to execute code from the same
- * CV that we used previously, we just use the existing
- * CX stack entry. However, its possible that in the
- * meantime we may have backtracked, popped from the save
- * stack, and undone the SAVECOMPPAD(s) associated with
- * PUSH_MULTICALL; in which case PL_comppad no longer
- * points to newcv's pad. */
+ /* Some notes about MULTICALL and the context and save stacks.
+ *
+ * In something like
+ * /...(?{ my $x)}...(?{ my $y)}...(?{ my $z)}.../
+ * since codeblocks don't introduce a new scope (so that
+ * local() etc accumulate), at the end of a successful
+ * match there will be a SAVEt_CLEARSV on the savestack
+ * for each of $x, $y, $z. If the three code blocks above
+ * happen to have come from different CVs (e.g. via
+ * embedded qr//s), then we must ensure that during any
+ * savestack unwinding, PL_comppad always points to the
+ * right pad at each moment. We achieve this by
+ * interleaving SAVEt_COMPPAD's on the savestack whenever
+ * there is a change of pad.
+ * In theory whenever we call a code block, we should
+ * push a CXt_SUB context, then pop it on return from
+ * that code block. This causes a bit of an issue in that
+ * normally popping a context also clears the savestack
+ * back to cx->blk_oldsaveix, but here we specifically
+ * don't want to clear the save stack on exit from the
+ * code block.
+ * Also for efficiency we don't want to keep pushing and
+ * popping the single SUB context as we backtrack etc.
+ * So instead, we push a single context the first time
+ * we need, it, then hang onto it until the end of this
+ * function. Whenever we encounter a new code block, we
+ * update the CV etc if that's changed. During the times
+ * in this function where we're not executing a code
+ * block, having the SUB context still there is a bit
+ * naughty - but we hope that no-one notices.
+ * When the SUB context is initially pushed, we fake up
+ * cx->blk_oldsaveix to be as if we'd pushed this context
+ * on first entry to S_regmatch rather than at some random
+ * point during the regexe execution. That way if we
+ * croak, popping the context stack will ensure that
+ * *everything* SAVEd by this function is undone and then
+ * the context popped, rather than e.g., popping the
+ * context (and restoring the original PL_comppad) then
+ * popping more of the savestack and restoring a bad
+ * PL_comppad.
+ */
+
+ /* If this is the first EVAL, push a MULTICALL. On
+ * subsequent calls, if we're executing a different CV, or
+ * if PL_comppad has got messed up from backtracking
+ * through SAVECOMPPADs, then refresh the context.
+ */
if (newcv != last_pushed_cv || PL_comppad != last_pad)
{
U8 flags = (CXp_SUB_RE |
((newcv == caller_cv) ? CXp_SUB_RE_FAKE : 0));
+ SAVECOMPPAD();
if (last_pushed_cv) {
CHANGE_MULTICALL_FLAGS(newcv, flags);
}
else {
PUSH_MULTICALL_FLAGS(newcv, flags);
}
+ /* see notes above */
+ CX_CUR()->blk_oldsaveix = orig_savestack_ix;
+
last_pushed_cv = newcv;
}
else {
/* these assignments are just to silence compiler
* warnings */
multicall_cop = NULL;
- newsp = NULL;
}
last_pad = PL_comppad;
}
nop = nop->op_next;
- DEBUG_STATE_r( PerlIO_printf(Perl_debug_log,
- " re EVAL PL_op=0x%"UVxf"\n", PTR2UV(nop)) );
+ DEBUG_STATE_r( Perl_re_printf( aTHX_
+ " re EVAL PL_op=0x%" UVxf "\n", PTR2UV(nop)) );
rex->offs[0].end = locinput - reginfo->strbeg;
if (reginfo->info_aux_eval->pos_magic)
/* we don't use MULTICALL here as we want to call the
* first op of the block of interest, rather than the
- * first op of the sub */
+ * first op of the sub. Also, we don't want to free
+ * the savestack frame */
before = (IV)(SP-PL_stack_base);
PL_op = nop;
CALLRUNOPS(aTHX); /* Scalar context. */
if (logical == 0) /* (?{})/ */
sv_setsv(save_scalar(PL_replgv), ret); /* $^R */
else if (logical == 1) { /* /(?(?{...})X|Y)/ */
- sw = cBOOL(SvTRUE(ret));
+ sw = cBOOL(SvTRUE_NN(ret));
logical = 0;
}
else { /* /(??{}) */
* in the regexp code uses the pad ! */
PL_op = oop;
PL_curcop = ocurcop;
- S_regcp_restore(aTHX_ rex, runops_cp, &maxopenparen);
- PL_curpm = PL_reg_curpm;
+ regcp_restore(rex, ST.lastcp, &maxopenparen);
+ PL_curpm_under = PL_curpm;
+ PL_curpm = PL_reg_curpm;
- if (logical != 2)
- break;
+ if (logical != 2) {
+ PUSH_STATE_GOTO(EVAL_B, next, locinput);
+ /* NOTREACHED */
+ }
}
/* only /(??{})/ from now on */
reginfo->strend, "Matching embedded");
);
startpoint = rei->program + 1;
- ST.close_paren = 0; /* only used for GOSUB */
+ EVAL_CLOSE_PAREN_CLEAR(st); /* ST.close_paren = 0;
+ * close_paren only for GOSUB */
+ ST.prev_recurse_locinput= NULL; /* only used for GOSUB */
/* Save all the seen positions so far. */
ST.cp = regcppush(rex, 0, maxopenparen);
REGCP_SET(ST.lastcp);
ST.prev_eval = cur_eval;
cur_eval = st;
/* now continue from first node in postoned RE */
- PUSH_YES_STATE_GOTO(EVAL_AB, startpoint, locinput);
- /* NOTREACHED */
+ PUSH_YES_STATE_GOTO(EVAL_postponed_AB, startpoint, locinput);
NOT_REACHED; /* NOTREACHED */
}
- case EVAL_AB: /* cleanup after a successful (??{A})B */
- /* note: this is called twice; first after popping B, then A */
+ case EVAL_postponed_AB: /* cleanup after a successful (??{A})B */
+ /* note: this is called twice; first after popping B, then A */
+ DEBUG_STACK_r({
+ Perl_re_exec_indentf( aTHX_ "EVAL_AB cur_eval=%p prev_eval=%p\n",
+ depth, cur_eval, ST.prev_eval);
+ });
+
+#define SET_RECURSE_LOCINPUT(STR,VAL)\
+ if ( cur_eval && CUR_EVAL.close_paren ) {\
+ DEBUG_STACK_r({ \
+ Perl_re_exec_indentf( aTHX_ STR " GOSUB%d ce=%p recurse_locinput=%p\n",\
+ depth, \
+ CUR_EVAL.close_paren - 1,\
+ cur_eval, \
+ VAL); \
+ }); \
+ rex->recurse_locinput[CUR_EVAL.close_paren - 1] = VAL;\
+ }
+
+ SET_RECURSE_LOCINPUT("EVAL_AB[before]", CUR_EVAL.prev_recurse_locinput);
+
rex_sv = ST.prev_rex;
is_utf8_pat = reginfo->is_utf8_pat = cBOOL(RX_UTF8(rex_sv));
SET_reg_curpm(rex_sv);
reginfo->poscache_maxiter = 0;
if ( nochange_depth )
nochange_depth--;
+
+ SET_RECURSE_LOCINPUT("EVAL_AB[after]", cur_eval->locinput);
sayYES;
- case EVAL_AB_fail: /* unsuccessfully ran A or B in (??{A})B */
+ case EVAL_B_fail: /* unsuccessful B in (?{...})B */
+ REGCP_UNWIND(ST.lastcp);
+ sayNO;
+
+ case EVAL_postponed_AB_fail: /* unsuccessfully ran A or B in (??{A})B */
/* note: this is called twice; first after popping B, then A */
+ DEBUG_STACK_r({
+ Perl_re_exec_indentf( aTHX_ "EVAL_AB_fail cur_eval=%p prev_eval=%p\n",
+ depth, cur_eval, ST.prev_eval);
+ });
+
+ SET_RECURSE_LOCINPUT("EVAL_AB_fail[before]", CUR_EVAL.prev_recurse_locinput);
+
rex_sv = ST.prev_rex;
is_utf8_pat = reginfo->is_utf8_pat = cBOOL(RX_UTF8(rex_sv));
SET_reg_curpm(rex_sv);
rexi = RXi_GET(rex);
REGCP_UNWIND(ST.lastcp);
- regcppop(rex, &maxopenparen);
+ regcppop(rex, &maxopenparen);
cur_eval = ST.prev_eval;
cur_curlyx = ST.prev_curlyx;
+
/* Invalidate cache. See "invalidate" comment above. */
reginfo->poscache_maxiter = 0;
if ( nochange_depth )
nochange_depth--;
- sayNO_SILENT;
+
+ SET_RECURSE_LOCINPUT("EVAL_AB_fail[after]", cur_eval->locinput);
+ sayNO_SILENT;
#undef ST
case OPEN: /* ( */
rex->offs[n].start_tmp = locinput - reginfo->strbeg;
if (n > maxopenparen)
maxopenparen = n;
- DEBUG_BUFFERS_r(PerlIO_printf(Perl_debug_log,
- "rex=0x%"UVxf" offs=0x%"UVxf": \\%"UVuf": set %"IVdf" tmp; maxopenparen=%"UVuf"\n",
+ DEBUG_BUFFERS_r(Perl_re_exec_indentf( aTHX_
+ "rex=0x%" UVxf " offs=0x%" UVxf ": \\%" UVuf ": set %" IVdf " tmp; maxopenparen=%" UVuf "\n",
+ depth,
PTR2UV(rex),
PTR2UV(rex->offs),
(UV)n,
break;
/* XXX really need to log other places start/end are set too */
-#define CLOSE_CAPTURE \
- rex->offs[n].start = rex->offs[n].start_tmp; \
- rex->offs[n].end = locinput - reginfo->strbeg; \
- DEBUG_BUFFERS_r(PerlIO_printf(Perl_debug_log, \
- "rex=0x%"UVxf" offs=0x%"UVxf": \\%"UVuf": set %"IVdf"..%"IVdf"\n", \
- PTR2UV(rex), \
- PTR2UV(rex->offs), \
- (UV)n, \
- (IV)rex->offs[n].start, \
- (IV)rex->offs[n].end \
+#define CLOSE_CAPTURE \
+ rex->offs[n].start = rex->offs[n].start_tmp; \
+ rex->offs[n].end = locinput - reginfo->strbeg; \
+ DEBUG_BUFFERS_r(Perl_re_exec_indentf( aTHX_ \
+ "rex=0x%" UVxf " offs=0x%" UVxf ": \\%" UVuf ": set %" IVdf "..%" IVdf "\n", \
+ depth, \
+ PTR2UV(rex), \
+ PTR2UV(rex->offs), \
+ (UV)n, \
+ (IV)rex->offs[n].start, \
+ (IV)rex->offs[n].end \
))
case CLOSE: /* ) */
if (n > rex->lastparen)
rex->lastparen = n;
rex->lastcloseparen = n;
- if (cur_eval && cur_eval->u.eval.close_paren == n) {
+ if ( EVAL_CLOSE_PAREN_IS( cur_eval, n ) )
goto fake_end;
- }
+
break;
case ACCEPT: /* (*ACCEPT) */
if (n > rex->lastparen)
rex->lastparen = n;
rex->lastcloseparen = n;
- if ( n == ARG(scan) || (cur_eval &&
- cur_eval->u.eval.close_paren == n))
+ if ( n == ARG(scan) || EVAL_CLOSE_PAREN_IS(cur_eval, n) )
break;
}
}
case INSUBP: /* (?(R)) */
n = ARG(scan);
- sw = (cur_eval && (!n || cur_eval->u.eval.close_paren == n));
+ /* this does not need to use EVAL_CLOSE_PAREN macros, as the arg
+ * of SCAN is already set up as matches a eval.close_paren */
+ sw = cur_eval && (n == 0 || CUR_EVAL.close_paren == n);
break;
case DEFINEP: /* (?(DEFINE)) */
ST.lastloc = NULL; /* this will be updated by WHILEM */
PUSH_YES_STATE_GOTO(CURLYX_end, PREVOPER(next), locinput);
- /* NOTREACHED */
NOT_REACHED; /* NOTREACHED */
}
case CURLYX_end: /* just finished matching all of A*B */
cur_curlyx = ST.prev_curlyx;
sayYES;
- /* NOTREACHED */
NOT_REACHED; /* NOTREACHED */
case CURLYX_end_fail: /* just failed to match all of A*B */
regcpblow(ST.cp);
cur_curlyx = ST.prev_curlyx;
sayNO;
- /* NOTREACHED */
NOT_REACHED; /* NOTREACHED */
ST.cache_mask = 0;
- DEBUG_EXECUTE_r( PerlIO_printf(Perl_debug_log,
- "%*s whilem: matched %ld out of %d..%d\n",
- REPORT_CODE_OFF+depth*2, "", (long)n, min, max)
+ DEBUG_EXECUTE_r( Perl_re_exec_indentf( aTHX_ "whilem: matched %ld out of %d..%d\n",
+ depth, (long)n, min, max)
);
/* First just match a string of min A's. */
if (n < min) {
- ST.cp = regcppush(rex, cur_curlyx->u.curlyx.parenfloor,
- maxopenparen);
+ ST.cp = regcppush(rex, cur_curlyx->u.curlyx.parenfloor, maxopenparen);
cur_curlyx->u.curlyx.lastloc = locinput;
REGCP_SET(ST.lastcp);
PUSH_STATE_GOTO(WHILEM_A_pre, A, locinput);
- /* NOTREACHED */
NOT_REACHED; /* NOTREACHED */
}
/* If degenerate A matches "", assume A done. */
if (locinput == cur_curlyx->u.curlyx.lastloc) {
- DEBUG_EXECUTE_r( PerlIO_printf(Perl_debug_log,
- "%*s whilem: empty match detected, trying continuation...\n",
- REPORT_CODE_OFF+depth*2, "")
+ DEBUG_EXECUTE_r( Perl_re_exec_indentf( aTHX_ "whilem: empty match detected, trying continuation...\n",
+ depth)
);
goto do_whilem_B_max;
}
reginfo->poscache_size = size;
Newxz(aux->poscache, size, char);
}
- DEBUG_EXECUTE_r( PerlIO_printf(Perl_debug_log,
+ DEBUG_EXECUTE_r( Perl_re_printf( aTHX_
"%swhilem: Detected a super-linear match, switching on caching%s...\n",
PL_colors[4], PL_colors[5])
);
mask = 1 << (offset % 8);
offset /= 8;
if (reginfo->info_aux->poscache[offset] & mask) {
- DEBUG_EXECUTE_r( PerlIO_printf(Perl_debug_log,
- "%*s whilem: (cache) already tried at this position...\n",
- REPORT_CODE_OFF+depth*2, "")
+ DEBUG_EXECUTE_r( Perl_re_exec_indentf( aTHX_ "whilem: (cache) already tried at this position...\n",
+ depth)
);
+ cur_curlyx->u.curlyx.count--;
sayNO; /* cache records failure */
}
ST.cache_offset = offset;
if (cur_curlyx->u.curlyx.minmod) {
ST.save_curlyx = cur_curlyx;
cur_curlyx = cur_curlyx->u.curlyx.prev_curlyx;
- ST.cp = regcppush(rex, ST.save_curlyx->u.curlyx.parenfloor,
- maxopenparen);
- REGCP_SET(ST.lastcp);
PUSH_YES_STATE_GOTO(WHILEM_B_min, ST.save_curlyx->u.curlyx.B,
locinput);
- /* NOTREACHED */
NOT_REACHED; /* NOTREACHED */
}
/* Prefer A over B for maximal matching. */
if (n < max) { /* More greed allowed? */
- ST.cp = regcppush(rex, cur_curlyx->u.curlyx.parenfloor,
+ ST.cp = regcppush(rex, cur_curlyx->u.curlyx.parenfloor,
maxopenparen);
cur_curlyx->u.curlyx.lastloc = locinput;
REGCP_SET(ST.lastcp);
PUSH_STATE_GOTO(WHILEM_A_max, A, locinput);
- /* NOTREACHED */
NOT_REACHED; /* NOTREACHED */
}
goto do_whilem_B_max;
}
- /* NOTREACHED */
NOT_REACHED; /* NOTREACHED */
case WHILEM_B_min: /* just matched B in a minimal match */
case WHILEM_B_max: /* just matched B in a maximal match */
cur_curlyx = ST.save_curlyx;
sayYES;
- /* NOTREACHED */
NOT_REACHED; /* NOTREACHED */
case WHILEM_B_max_fail: /* just failed to match B in a maximal match */
cur_curlyx->u.curlyx.lastloc = ST.save_lastloc;
cur_curlyx->u.curlyx.count--;
CACHEsayNO;
- /* NOTREACHED */
NOT_REACHED; /* NOTREACHED */
- case WHILEM_A_min_fail: /* just failed to match A in a minimal match */
- /* FALLTHROUGH */
case WHILEM_A_pre_fail: /* just failed to match even minimal A */
REGCP_UNWIND(ST.lastcp);
- regcppop(rex, &maxopenparen);
+ regcppop(rex, &maxopenparen);
+ /* FALLTHROUGH */
+ case WHILEM_A_min_fail: /* just failed to match A in a minimal match */
cur_curlyx->u.curlyx.lastloc = ST.save_lastloc;
cur_curlyx->u.curlyx.count--;
CACHEsayNO;
- /* NOTREACHED */
NOT_REACHED; /* NOTREACHED */
case WHILEM_A_max_fail: /* just failed to match A in a maximal match */
REGCP_UNWIND(ST.lastcp);
- regcppop(rex, &maxopenparen); /* Restore some previous $<digit>s? */
- DEBUG_EXECUTE_r(PerlIO_printf(Perl_debug_log,
- "%*s whilem: failed, trying continuation...\n",
- REPORT_CODE_OFF+depth*2, "")
+ regcppop(rex, &maxopenparen); /* Restore some previous $<digit>s? */
+ DEBUG_EXECUTE_r(Perl_re_exec_indentf( aTHX_ "whilem: failed, trying continuation...\n",
+ depth)
);
do_whilem_B_max:
if (cur_curlyx->u.curlyx.count >= REG_INFTY
cur_curlyx = cur_curlyx->u.curlyx.prev_curlyx;
PUSH_YES_STATE_GOTO(WHILEM_B_max, ST.save_curlyx->u.curlyx.B,
locinput);
- /* NOTREACHED */
NOT_REACHED; /* NOTREACHED */
case WHILEM_B_min_fail: /* just failed to match B in a minimal match */
cur_curlyx = ST.save_curlyx;
- REGCP_UNWIND(ST.lastcp);
- regcppop(rex, &maxopenparen);
if (cur_curlyx->u.curlyx.count >= /*max*/ARG2(cur_curlyx->u.curlyx.me)) {
/* Maximum greed exceeded */
CACHEsayNO;
}
- DEBUG_EXECUTE_r(PerlIO_printf(Perl_debug_log,
- "%*s trying longer...\n", REPORT_CODE_OFF+depth*2, "")
+ DEBUG_EXECUTE_r(Perl_re_exec_indentf( aTHX_ "trying longer...\n", depth)
);
/* Try grabbing another A and see if it helps. */
cur_curlyx->u.curlyx.lastloc = locinput;
- ST.cp = regcppush(rex, cur_curlyx->u.curlyx.parenfloor,
- maxopenparen);
- REGCP_SET(ST.lastcp);
PUSH_STATE_GOTO(WHILEM_A_min,
/*A*/ NEXTOPER(ST.save_curlyx->u.curlyx.me) + EXTRA_STEP_2ARGS,
locinput);
- /* NOTREACHED */
NOT_REACHED; /* NOTREACHED */
#undef ST
} else {
PUSH_STATE_GOTO(BRANCH_next, scan, locinput);
}
- /* NOTREACHED */
NOT_REACHED; /* NOTREACHED */
case CUTGROUP: /* /(*THEN)/ */
? MUTABLE_SV(rexi->data->data[ ARG( scan ) ])
: NULL;
PUSH_STATE_GOTO(CUTGROUP_next, next, locinput);
- /* NOTREACHED */
NOT_REACHED; /* NOTREACHED */
case CUTGROUP_next_fail:
if (st->u.mark.mark_name)
sv_commit = st->u.mark.mark_name;
sayNO;
- /* NOTREACHED */
NOT_REACHED; /* NOTREACHED */
case BRANCH_next:
sayYES;
- /* NOTREACHED */
NOT_REACHED; /* NOTREACHED */
case BRANCH_next_fail: /* that branch failed; try the next, if any */
/* no more branches? */
if (!scan || (OP(scan) != BRANCH && OP(scan) != BRANCHJ)) {
DEBUG_EXECUTE_r({
- PerlIO_printf( Perl_debug_log,
- "%*s %sBRANCH failed...%s\n",
- REPORT_CODE_OFF+depth*2, "",
+ Perl_re_exec_indentf( aTHX_ "%sBRANCH failed...%s\n",
+ depth,
PL_colors[4],
PL_colors[5] );
});
curlym_do_A: /* execute the A in /A{m,n}B/ */
PUSH_YES_STATE_GOTO(CURLYM_A, ST.A, locinput); /* match A */
- /* NOTREACHED */
NOT_REACHED; /* NOTREACHED */
case CURLYM_A: /* we've just matched an A */
ST.count = ST.minmod ? ARG1(ST.me) : ARG2(ST.me);
}
DEBUG_EXECUTE_r(
- PerlIO_printf(Perl_debug_log,
- "%*s CURLYM now matched %"IVdf" times, len=%"IVdf"...\n",
- (int)(REPORT_CODE_OFF+(depth*2)), "",
- (IV) ST.count, (IV)ST.alen)
+ Perl_re_exec_indentf( aTHX_ "CURLYM now matched %" IVdf " times, len=%" IVdf "...\n",
+ depth, (IV) ST.count, (IV)ST.alen)
);
- if (cur_eval && cur_eval->u.eval.close_paren &&
- cur_eval->u.eval.close_paren == (U32)ST.me->flags)
+ if (EVAL_CLOSE_PAREN_IS_TRUE(cur_eval,(U32)ST.me->flags))
goto fake_end;
{
case CURLYM_A_fail: /* just failed to match an A */
REGCP_UNWIND(ST.cp);
+
if (ST.minmod || ST.count < ARG1(ST.me) /* min*/
- || (cur_eval && cur_eval->u.eval.close_paren &&
- cur_eval->u.eval.close_paren == (U32)ST.me->flags))
+ || EVAL_CLOSE_PAREN_IS_TRUE(cur_eval,(U32)ST.me->flags))
sayNO;
curlym_do_B: /* execute the B in /A{m,n}B/ */
}
DEBUG_EXECUTE_r(
- PerlIO_printf(Perl_debug_log,
- "%*s CURLYM trying tail with matches=%"IVdf"...\n",
- (int)(REPORT_CODE_OFF+(depth*2)),
- "", (IV)ST.count)
+ Perl_re_exec_indentf( aTHX_ "CURLYM trying tail with matches=%" IVdf "...\n",
+ depth, (IV)ST.count)
);
if (! NEXTCHR_IS_EOS && ST.c1 != CHRTEST_VOID) {
if (! UTF8_IS_INVARIANT(nextchr) && utf8_target) {
{
/* simulate B failing */
DEBUG_OPTIMISE_r(
- PerlIO_printf(Perl_debug_log,
- "%*s CURLYM Fast bail next target=0x%"UVXf" c1=0x%"UVXf" c2=0x%"UVXf"\n",
- (int)(REPORT_CODE_OFF+(depth*2)),"",
+ Perl_re_exec_indentf( aTHX_ "CURLYM Fast bail next target=0x%" UVXf " c1=0x%" UVXf " c2=0x%" UVXf "\n",
+ depth,
valid_utf8_to_uvchr((U8 *) locinput, NULL),
valid_utf8_to_uvchr(ST.c1_utf8, NULL),
valid_utf8_to_uvchr(ST.c2_utf8, NULL))
else if (nextchr != ST.c1 && nextchr != ST.c2) {
/* simulate B failing */
DEBUG_OPTIMISE_r(
- PerlIO_printf(Perl_debug_log,
- "%*s CURLYM Fast bail next target=0x%X c1=0x%X c2=0x%X\n",
- (int)(REPORT_CODE_OFF+(depth*2)),"",
+ Perl_re_exec_indentf( aTHX_ "CURLYM Fast bail next target=0x%X c1=0x%X c2=0x%X\n",
+ depth,
(int) nextchr, ST.c1, ST.c2)
);
state_num = CURLYM_B_fail;
}
else
rex->offs[paren].end = -1;
- if (cur_eval && cur_eval->u.eval.close_paren &&
- cur_eval->u.eval.close_paren == (U32)ST.me->flags)
+
+ if (EVAL_CLOSE_PAREN_IS_TRUE(cur_eval,(U32)ST.me->flags))
{
if (ST.count)
goto fake_end;
}
PUSH_STATE_GOTO(CURLYM_B, ST.B, locinput); /* match B */
- /* NOTREACHED */
NOT_REACHED; /* NOTREACHED */
case CURLYM_B_fail: /* just failed to match a B */
maxopenparen = ST.paren;
ST.min = ARG1(scan); /* min to match */
ST.max = ARG2(scan); /* max to match */
- if (cur_eval && cur_eval->u.eval.close_paren &&
- cur_eval->u.eval.close_paren == (U32)ST.paren) {
+ if (EVAL_CLOSE_PAREN_IS_TRUE(cur_eval,(U32)ST.paren))
+ {
ST.min=1;
ST.max=1;
}
char *li = locinput;
minmod = 0;
if (ST.min &&
- regrepeat(rex, &li, ST.A, reginfo, ST.min, depth)
+ regrepeat(rex, &li, ST.A, reginfo, ST.min)
< ST.min)
sayNO;
SET_locinput(li);
/* avoid taking address of locinput, so it can remain
* a register var */
char *li = locinput;
- ST.count = regrepeat(rex, &li, ST.A, reginfo, ST.max, depth);
+ ST.count = regrepeat(rex, &li, ST.A, reginfo, ST.max);
if (ST.count < ST.min)
sayNO;
SET_locinput(li);
REGCP_SET(ST.cp);
goto curly_try_B_max;
}
- /* NOTREACHED */
NOT_REACHED; /* NOTREACHED */
case CURLY_B_min_known_fail:
* locinput matches */
char *li = ST.oldloc;
ST.count += n;
- if (regrepeat(rex, &li, ST.A, reginfo, n, depth) < n)
+ if (regrepeat(rex, &li, ST.A, reginfo, n) < n)
sayNO;
assert(n == REG_INFTY || locinput == li);
}
CURLY_SETPAREN(ST.paren, ST.count);
- if (cur_eval && cur_eval->u.eval.close_paren &&
- cur_eval->u.eval.close_paren == (U32)ST.paren) {
+ if (EVAL_CLOSE_PAREN_IS_TRUE(cur_eval,(U32)ST.paren))
goto fake_end;
- }
PUSH_STATE_GOTO(CURLY_B_min_known, ST.B, locinput);
}
- /* NOTREACHED */
NOT_REACHED; /* NOTREACHED */
case CURLY_B_min_fail:
/* failed -- move forward one */
{
char *li = locinput;
- if (!regrepeat(rex, &li, ST.A, reginfo, 1, depth)) {
+ if (!regrepeat(rex, &li, ST.A, reginfo, 1)) {
sayNO;
}
locinput = li;
{
curly_try_B_min:
CURLY_SETPAREN(ST.paren, ST.count);
- if (cur_eval && cur_eval->u.eval.close_paren &&
- cur_eval->u.eval.close_paren == (U32)ST.paren) {
+ if (EVAL_CLOSE_PAREN_IS_TRUE(cur_eval,(U32)ST.paren))
goto fake_end;
- }
PUSH_STATE_GOTO(CURLY_B_min, ST.B, locinput);
}
}
sayNO;
- /* NOTREACHED */
NOT_REACHED; /* NOTREACHED */
curly_try_B_max:
/* a successful greedy match: now try to match B */
- if (cur_eval && cur_eval->u.eval.close_paren &&
- cur_eval->u.eval.close_paren == (U32)ST.paren) {
+ if (EVAL_CLOSE_PAREN_IS_TRUE(cur_eval,(U32)ST.paren))
goto fake_end;
- }
{
bool could_match = locinput < reginfo->strend;
if (ST.c1 == CHRTEST_VOID || could_match) {
CURLY_SETPAREN(ST.paren, ST.count);
PUSH_STATE_GOTO(CURLY_B_max, ST.B, locinput);
- /* NOTREACHED */
NOT_REACHED; /* NOTREACHED */
}
}
fake_end:
if (cur_eval) {
/* we've just finished A in /(??{A})B/; now continue with B */
-
+ SET_RECURSE_LOCINPUT("FAKE-END[before]", CUR_EVAL.prev_recurse_locinput);
st->u.eval.prev_rex = rex_sv; /* inner */
/* Save *all* the positions. */
- st->u.eval.cp = regcppush(rex, 0, maxopenparen);
- rex_sv = cur_eval->u.eval.prev_rex;
+ st->u.eval.cp = regcppush(rex, 0, maxopenparen);
+ rex_sv = CUR_EVAL.prev_rex;
is_utf8_pat = reginfo->is_utf8_pat = cBOOL(RX_UTF8(rex_sv));
SET_reg_curpm(rex_sv);
rex = ReANY(rex_sv);
rexi = RXi_GET(rex);
- cur_curlyx = cur_eval->u.eval.prev_curlyx;
+
+ st->u.eval.prev_curlyx = cur_curlyx;
+ cur_curlyx = CUR_EVAL.prev_curlyx;
REGCP_SET(st->u.eval.lastcp);
/* Restore parens of the outer rex without popping the
* savestack */
- S_regcp_restore(aTHX_ rex, cur_eval->u.eval.lastcp,
- &maxopenparen);
+ regcp_restore(rex, CUR_EVAL.lastcp, &maxopenparen);
st->u.eval.prev_eval = cur_eval;
- cur_eval = cur_eval->u.eval.prev_eval;
+ cur_eval = CUR_EVAL.prev_eval;
DEBUG_EXECUTE_r(
- PerlIO_printf(Perl_debug_log, "%*s EVAL trying tail ... %"UVxf"\n",
- REPORT_CODE_OFF+depth*2, "",PTR2UV(cur_eval)););
+ Perl_re_exec_indentf( aTHX_ "EVAL trying tail ... (cur_eval=%p)\n",
+ depth, cur_eval););
if ( nochange_depth )
nochange_depth--;
- PUSH_YES_STATE_GOTO(EVAL_AB, st->u.eval.prev_eval->u.eval.B,
+ SET_RECURSE_LOCINPUT("FAKE-END[after]", cur_eval->locinput);
+
+ PUSH_YES_STATE_GOTO(EVAL_postponed_AB, st->u.eval.prev_eval->u.eval.B,
locinput); /* match B */
}
if (locinput < reginfo->till) {
- DEBUG_EXECUTE_r(PerlIO_printf(Perl_debug_log,
- "%sMatch possible, but length=%ld is smaller than requested=%ld, failing!%s\n",
+ DEBUG_EXECUTE_r(Perl_re_printf( aTHX_
+ "%sMatch possible, but length=%ld is smaller than requested=%ld, failing!%s\n",
PL_colors[4],
(long)(locinput - startpos),
(long)(reginfo->till - startpos),
case SUCCEED: /* successful SUSPEND/UNLESSM/IFMATCH/CURLYM */
DEBUG_EXECUTE_r(
- PerlIO_printf(Perl_debug_log,
- "%*s %ssubpattern success...%s\n",
- REPORT_CODE_OFF+depth*2, "", PL_colors[4], PL_colors[5]));
+ Perl_re_exec_indentf( aTHX_ "%ssubpattern success...%s\n",
+ depth, PL_colors[4], PL_colors[5]));
sayYES; /* Success! */
#undef ST
/* execute body of (?...A) */
PUSH_YES_STATE_GOTO(IFMATCH_A, NEXTOPER(NEXTOPER(scan)), newstart);
- /* NOTREACHED */
NOT_REACHED; /* NOTREACHED */
}
if (scan->flags)
sv_yes_mark = sv_commit = MUTABLE_SV(rexi->data->data[ ARG( scan ) ]);
PUSH_STATE_GOTO(COMMIT_next, next, locinput);
- /* NOTREACHED */
NOT_REACHED; /* NOTREACHED */
case COMMIT_next_fail:
} else {
sayNO;
}
- /* NOTREACHED */
NOT_REACHED; /* NOTREACHED */
#define ST st->u.mark
mark_state = st;
ST.mark_loc = locinput;
PUSH_YES_STATE_GOTO(MARKPOINT_next, next, locinput);
- /* NOTREACHED */
NOT_REACHED; /* NOTREACHED */
case MARKPOINT_next:
mark_state = ST.prev_mark;
sayYES;
- /* NOTREACHED */
NOT_REACHED; /* NOTREACHED */
case MARKPOINT_next_fail:
sv_commit = ST.mark_name;
DEBUG_EXECUTE_r({
- PerlIO_printf(Perl_debug_log,
- "%*s %ssetting cutpoint to mark:%"SVf"...%s\n",
- REPORT_CODE_OFF+depth*2, "",
+ Perl_re_exec_indentf( aTHX_ "%ssetting cutpoint to mark:%" SVf "...%s\n",
+ depth,
PL_colors[4], SVfARG(sv_commit), PL_colors[5]);
});
}
sv_yes_mark = mark_state ?
mark_state->u.mark.mark_name : NULL;
sayNO;
- /* NOTREACHED */
NOT_REACHED; /* NOTREACHED */
case SKIP: /* (*SKIP) */
}
no_final = 1;
sayNO;
- /* NOTREACHED */
NOT_REACHED; /* NOTREACHED */
#undef ST
break;
default:
- PerlIO_printf(Perl_error_log, "%"UVxf" %d\n",
+ PerlIO_printf(Perl_error_log, "%" UVxf " %d\n",
PTR2UV(scan), OP(scan));
Perl_croak(aTHX_ "regexp memory corruption");
assert(!NEXTCHR_IS_EOS);
if (utf8_target) {
locinput += PL_utf8skip[nextchr];
- /* locinput is allowed to go 1 char off the end, but not 2+ */
+ /* locinput is allowed to go 1 char off the end (signifying
+ * EOS), but not 2+ */
if (locinput > reginfo->strend)
sayNO;
}
DEBUG_STACK_r({
regmatch_state *cur = st;
regmatch_state *curyes = yes_state;
- int curd = depth;
+ U32 i;
regmatch_slab *slab = PL_regmatch_slab;
- for (;curd > -1;cur--,curd--) {
+ for (i = 0; i < 3 && i <= depth; cur--,i++) {
if (cur < SLAB_FIRST(slab)) {
slab = slab->prev;
cur = SLAB_LAST(slab);
}
- PerlIO_printf(Perl_error_log, "%*s#%-3d %-10s %s\n",
- REPORT_CODE_OFF + 2 + depth * 2,"",
- curd, PL_reg_name[cur->resume_state],
+ Perl_re_exec_indentf( aTHX_ "%4s #%-3d %-10s %s\n",
+ depth,
+ i ? " " : "push",
+ depth - i, PL_reg_name[cur->resume_state],
(curyes == cur) ? "yes" : ""
);
if (curyes == cur)
/* NOTREACHED */
}
}
+#ifdef SOLARIS_BAD_OPTIMIZER
+# undef PL_charclass
+#endif
/*
* We get here only if there's trouble -- normally "case END" is
* the terminating point.
*/
Perl_croak(aTHX_ "corrupted regexp pointers");
- /* NOTREACHED */
- sayNO;
NOT_REACHED; /* NOTREACHED */
yes:
goto reenter_switch;
}
- DEBUG_EXECUTE_r(PerlIO_printf(Perl_debug_log, "%sMatch successful!%s\n",
+ DEBUG_EXECUTE_r(Perl_re_printf( aTHX_ "%sMatch successful!%s\n",
PL_colors[4], PL_colors[5]));
if (reginfo->info_aux_eval) {
no:
DEBUG_EXECUTE_r(
- PerlIO_printf(Perl_debug_log,
- "%*s %sfailed...%s\n",
- REPORT_CODE_OFF+depth*2, "",
+ Perl_re_exec_indentf( aTHX_ "%sfailed...%s\n",
+ depth,
PL_colors[4], PL_colors[5])
);
yes_state = st->u.yes.prev_yes_state;
state_num = st->resume_state + 1; /* failure = success + 1 */
+ PERL_ASYNC_CHECK();
goto reenter_switch;
}
result = 0;
if (last_pushed_cv) {
dSP;
+ /* see "Some notes about MULTICALL" above */
POP_MULTICALL;
PERL_UNUSED_VAR(SP);
}
+ else
+ LEAVE_SCOPE(orig_savestack_ix);
assert(!result || locinput - reginfo->strbeg >= 0);
return result ? locinput - reginfo->strbeg : -1;
*/
STATIC I32
S_regrepeat(pTHX_ regexp *prog, char **startposp, const regnode *p,
- regmatch_info *const reginfo, I32 max, int depth)
+ regmatch_info *const reginfo, I32 max _pDEPTH)
{
char *scan; /* Pointer to current position in target string */
I32 c;
unsigned int to_complement = 0; /* Invert the result? */
UV utf8_flags;
_char_class_number classnum;
-#ifndef DEBUGGING
- PERL_UNUSED_ARG(depth);
-#endif
PERL_ARGS_ASSERT_REGREPEAT;
case ANYOFL:
_CHECK_AND_WARN_PROBLEMATIC_LOCALE;
- if ((FLAGS(p) & ANYOFL_UTF8_LOCALE_REQD) && ! IN_UTF8_CTYPE_LOCALE) {
+ if (ANYOFL_UTF8_LOCALE_REQD(FLAGS(p)) && ! IN_UTF8_CTYPE_LOCALE) {
Perl_ck_warner(aTHX_ packWARN(WARN_LOCALE), utf8_locale_required);
}
/* FALLTHROUGH */
scan += UTF8SKIP(scan);
hardcount++;
}
- } else {
- while (scan < loceol && REGINCLASS(prog, p, (U8*)scan))
+ }
+ else if (ANYOF_FLAGS(p)) {
+ while (scan < loceol
+ && reginclass(prog, p, (U8*)scan, (U8*)scan+1, 0))
+ scan++;
+ }
+ else {
+ while (scan < loceol && ANYOF_BITMAP_TEST(p, *((U8*)scan)))
scan++;
}
break;
/* The complement of something that matches only ASCII matches all
* non-ASCII, plus everything in ASCII that isn't in the class. */
while (hardcount < max && scan < loceol
- && (! isASCII_utf8(scan)
+ && ( ! isASCII_utf8_safe(scan, reginfo->strend)
|| ! _generic_isCC_A((U8) *scan, FLAGS(p))))
{
scan += UTF8SKIP(scan);
case _CC_ENUM_SPACE:
while (hardcount < max
&& scan < loceol
- && (to_complement ^ cBOOL(isSPACE_utf8(scan))))
+ && (to_complement
+ ^ cBOOL(isSPACE_utf8_safe(scan, loceol))))
{
scan += UTF8SKIP(scan);
hardcount++;
case _CC_ENUM_BLANK:
while (hardcount < max
&& scan < loceol
- && (to_complement ^ cBOOL(isBLANK_utf8(scan))))
+ && (to_complement
+ ^ cBOOL(isBLANK_utf8_safe(scan, loceol))))
{
scan += UTF8SKIP(scan);
hardcount++;
case _CC_ENUM_XDIGIT:
while (hardcount < max
&& scan < loceol
- && (to_complement ^ cBOOL(isXDIGIT_utf8(scan))))
+ && (to_complement
+ ^ cBOOL(isXDIGIT_utf8_safe(scan, loceol))))
{
scan += UTF8SKIP(scan);
hardcount++;
case _CC_ENUM_VERTSPACE:
while (hardcount < max
&& scan < loceol
- && (to_complement ^ cBOOL(isVERTWS_utf8(scan))))
+ && (to_complement
+ ^ cBOOL(isVERTWS_utf8_safe(scan, loceol))))
{
scan += UTF8SKIP(scan);
hardcount++;
case _CC_ENUM_CNTRL:
while (hardcount < max
&& scan < loceol
- && (to_complement ^ cBOOL(isCNTRL_utf8(scan))))
+ && (to_complement
+ ^ cBOOL(isCNTRL_utf8_safe(scan, loceol))))
{
scan += UTF8SKIP(scan);
hardcount++;
}
while (hardcount < max && scan < loceol
- && to_complement ^ cBOOL(_generic_utf8(
+ && to_complement ^ cBOOL(_generic_utf8_safe(
classnum,
scan,
+ loceol,
swash_fetch(PL_utf8_swash_ptrs[classnum],
(U8 *) scan,
TRUE))))
default:
Perl_croak(aTHX_ "panic: regrepeat() called with unrecognized node type %d='%s'", OP(p), PL_reg_name[OP(p)]);
- /* NOTREACHED */
NOT_REACHED; /* NOTREACHED */
}
DEBUG_EXECUTE_r({
SV * const prop = sv_newmortal();
regprop(prog, prop, p, reginfo, NULL);
- PerlIO_printf(Perl_debug_log,
- "%*s %s can match %"IVdf" times out of %"IVdf"...\n",
- REPORT_CODE_OFF + depth*2, "", SvPVX_const(prop),(IV)c,(IV)max);
+ Perl_re_exec_indentf( aTHX_ "%s can match %" IVdf " times out of %" IVdf "...\n",
+ depth, SvPVX_const(prop),(IV)c,(IV)max);
});
});
* UTF8_IS_INVARIANT() works even if not in UTF-8 */
if (! UTF8_IS_INVARIANT(c) && utf8_target) {
STRLEN c_len = 0;
- c = utf8n_to_uvchr(p, p_end - p, &c_len,
- (UTF8_ALLOW_DEFAULT & UTF8_ALLOW_ANYUV)
- | UTF8_ALLOW_FFFF | UTF8_CHECK_ONLY);
- /* see [perl #37836] for UTF8_ALLOW_ANYUV; [perl #38293] for
- * UTF8_ALLOW_FFFF */
- if (c_len == (STRLEN)-1)
- Perl_croak(aTHX_ "Malformed UTF-8 character (fatal)");
- if (c > 255 && OP(n) == ANYOFL && ! (flags & ANYOFL_UTF8_LOCALE_REQD)) {
+ const U32 utf8n_flags = UTF8_ALLOW_DEFAULT;
+ c = utf8n_to_uvchr(p, p_end - p, &c_len, utf8n_flags | UTF8_CHECK_ONLY);
+ if (c_len == (STRLEN)-1) {
+ _force_out_malformed_utf8_message(p, p_end,
+ utf8n_flags,
+ 1 /* 1 means die */ );
+ NOT_REACHED; /* NOTREACHED */
+ }
+ if (c > 255 && OP(n) == ANYOFL && ! ANYOFL_UTF8_LOCALE_REQD(flags)) {
_CHECK_AND_OUTPUT_WIDE_LOCALE_CP_MSG(c);
}
}
&& c < 256
# endif
)))
- || (( flags & ANYOFL_SOME_FOLDS_ONLY_IN_UTF8_LOCALE)
- && IN_UTF8_CTYPE_LOCALE)))
+ || ( ANYOFL_SOME_FOLDS_ONLY_IN_UTF8_LOCALE(flags)
+ && IN_UTF8_CTYPE_LOCALE)))
{
SV* only_utf8_locale = NULL;
SV * const sw = _get_regclass_nonbitmap_data(prog, n, TRUE, 0,
&& ckWARN_d(WARN_NON_UNICODE))
{
Perl_warner(aTHX_ packWARN(WARN_NON_UNICODE),
- "Matched non-Unicode code point 0x%04"UVXf" against Unicode property; may not be portable", c);
+ "Matched non-Unicode code point 0x%04" UVXf " against Unicode property; may not be portable", c);
}
}
if (off >= 0) {
while (off-- && s < lim) {
/* XXX could check well-formedness here */
- s += UTF8SKIP(s);
+ U8 *new_s = s + UTF8SKIP(s);
+ if (new_s > lim) /* lim may be in the middle of a long character */
+ return s;
+ s = new_s;
}
}
else {
* char pos */
STATIC U8 *
-S_reghopmaybe3(U8* s, SSize_t off, const U8* lim)
+S_reghopmaybe3(U8* s, SSize_t off, const U8* const lim)
{
PERL_ARGS_ASSERT_REGHOPMAYBE3;
}
SET_reg_curpm(reginfo->prog);
eval_state->curpm = PL_curpm;
+ PL_curpm_under = PL_curpm;
PL_curpm = PL_reg_curpm;
if (RXp_MATCH_COPIED(rex)) {
/* Here is a serious problem: we cannot rewrite subbeg,
return TRUE;
}
+#ifndef PERL_IN_XSUB_RE
+
+bool
+Perl__is_grapheme(pTHX_ const U8 * strbeg, const U8 * s, const U8 * strend, const UV cp)
+{
+ /* Temporary helper function for toke.c. Verify that the code point 'cp'
+ * is a stand-alone grapheme. The UTF-8 for 'cp' begins at position 's' in
+ * the larger string bounded by 'strbeg' and 'strend'.
+ *
+ * 'cp' needs to be assigned (if not a future version of the Unicode
+ * Standard could make it something that combines with adjacent characters,
+ * so code using it would then break), and there has to be a GCB break
+ * before and after the character. */
+
+ GCB_enum cp_gcb_val, prev_cp_gcb_val, next_cp_gcb_val;
+ const U8 * prev_cp_start;
+
+ PERL_ARGS_ASSERT__IS_GRAPHEME;
+
+ /* Unassigned code points are forbidden */
+ if (UNLIKELY(! ELEMENT_RANGE_MATCHES_INVLIST(
+ _invlist_search(PL_Assigned_invlist, cp))))
+ {
+ return FALSE;
+ }
+
+ cp_gcb_val = getGCB_VAL_CP(cp);
+
+ /* Find the GCB value of the previous code point in the input */
+ prev_cp_start = utf8_hop_back(s, -1, strbeg);
+ if (UNLIKELY(prev_cp_start == s)) {
+ prev_cp_gcb_val = GCB_EDGE;
+ }
+ else {
+ prev_cp_gcb_val = getGCB_VAL_UTF8(prev_cp_start, strend);
+ }
+
+ /* And check that is a grapheme boundary */
+ if (! isGCB(prev_cp_gcb_val, cp_gcb_val, strbeg, s,
+ TRUE /* is UTF-8 encoded */ ))
+ {
+ return FALSE;
+ }
+
+ /* Similarly verify there is a break between the current character and the
+ * following one */
+ s += UTF8SKIP(s);
+ if (s >= strend) {
+ next_cp_gcb_val = GCB_EDGE;
+ }
+ else {
+ next_cp_gcb_val = getGCB_VAL_UTF8(s, strend);
+ }
+
+ return isGCB(cp_gcb_val, next_cp_gcb_val, strbeg, s, TRUE);
+}
+
+#endif
+
+
+
/*
* ex: set ts=8 sts=4 sw=4 et:
*/
https://perl5.git.perl.org / perl5.git / blobdiff