*/
/*
- * One Ring to rule them all, One Ring to find them
- &
+ * One Ring to rule them all, One Ring to find them
+ *
* [p.v of _The Lord of the Rings_, opening poem]
* [p.50 of _The Lord of the Rings_, I/iii: "The Shadow of the Past"]
* [p.254 of _The Lord of the Rings_, II/ii: "The Council of Elrond"]
# include "regcomp.h"
#endif
-#include "inline_invlist.c"
+#include "invlist_inline.h"
#include "unicode_constants.h"
+#define B_ON_NON_UTF8_LOCALE_IS_WRONG \
+ "Use of \\b{} or \\B{} for non-UTF-8 locale is wrong. Assuming a UTF-8 locale"
+
+static const char utf8_locale_required[] =
+ "Use of (?[ ]) for non-UTF-8 locale is wrong. Assuming a UTF-8 locale";
+
#ifdef DEBUGGING
/* At least one required character in the target string is expressible only in
* UTF-8. */
PL_utf8_swash_ptrs[_CC_WORDCHAR], \
"", \
PL_XPosix_ptrs[_CC_WORDCHAR], \
- LATIN_CAPITAL_LETTER_SHARP_S_UTF8);
-
-#define LOAD_UTF8_CHARCLASS_GCB() /* Grapheme cluster boundaries */ \
- STMT_START { \
- LOAD_UTF8_CHARCLASS_DEBUG_TEST(PL_utf8_X_regular_begin, \
- "_X_regular_begin", \
- NULL, \
- LATIN_CAPITAL_LETTER_SHARP_S_UTF8); \
- LOAD_UTF8_CHARCLASS_DEBUG_TEST(PL_utf8_X_extend, \
- "_X_extend", \
- NULL, \
- COMBINING_GRAVE_ACCENT_UTF8); \
- } STMT_END
+ LATIN_SMALL_LIGATURE_LONG_S_T_UTF8);
#define PLACEHOLDER /* Something for the preprocessor to grab onto */
/* TODO: Combine JUMPABLE and HAS_TEXT to cache OP(rn) */
} \
} STMT_END
-/* These constants are for finding GCB=LV and GCB=LVT in the CLUMP regnode.
- * These are for the pre-composed Hangul syllables, which are all in a
- * contiguous block and arranged there in such a way so as to facilitate
- * alorithmic determination of their characteristics. As such, they don't need
- * a swash, but can be determined by simple arithmetic. Almost all are
- * GCB=LVT, but every 28th one is a GCB=LV */
-#define SBASE 0xAC00 /* Start of block */
-#define SCount 11172 /* Length of block */
-#define TCount 28
-
#define SLAB_FIRST(s) (&(s)->states[0])
#define SLAB_LAST(s) (&(s)->states[PERL_REGMATCH_SLAB_SLOTS-1])
case _CC_ENUM_GRAPH: return isGRAPH_LC(character);
case _CC_ENUM_LOWER: return isLOWER_LC(character);
case _CC_ENUM_PRINT: return isPRINT_LC(character);
- case _CC_ENUM_PSXSPC: return isPSXSPC_LC(character);
case _CC_ENUM_PUNCT: return isPUNCT_LC(character);
case _CC_ENUM_SPACE: return isSPACE_LC(character);
case _CC_ENUM_UPPER: return isUPPER_LC(character);
}
else if (UTF8_IS_DOWNGRADEABLE_START(*character)) {
return isFOO_lc(classnum,
- TWO_BYTE_UTF8_TO_NATIVE(*character, *(character + 1)));
+ EIGHT_BIT_UTF8_TO_NATIVE(*character, *(character + 1)));
}
+ _CHECK_AND_OUTPUT_WIDE_LOCALE_UTF8_MSG(character, character + UTF8SKIP(character));
+
if (classnum < _FIRST_NON_SWASH_CC) {
/* Initialize the swash unless done already */
}
switch ((_char_class_number) classnum) {
- case _CC_ENUM_SPACE:
- case _CC_ENUM_PSXSPC: return is_XPERLSPACE_high(character);
-
+ case _CC_ENUM_SPACE: return is_XPERLSPACE_high(character);
case _CC_ENUM_BLANK: return is_HORIZWS_high(character);
case _CC_ENUM_XDIGIT: return is_XDIGIT_high(character);
case _CC_ENUM_VERTSPACE: return is_VERTWS_high(character);
"Intuit: trying to determine minimum start position...\n"));
/* for now, assume that all substr offsets are positive. If at some point
- * in the future someone wants to do clever things with look-behind and
+ * in the future someone wants to do clever things with lookbehind and
* -ve offsets, they'll need to fix up any code in this function
* which uses these offsets. See the thread beginning
* <20140113145929.GF27210@iabyn.com>
/* ml_anch: check after \n?
*
- * A note about IMPLICIT: on an un-anchored pattern beginning
+ * A note about PREGf_IMPLICIT: on an un-anchored pattern beginning
* with /.*.../, these flags will have been added by the
* compiler:
* /.*abc/, /.*abc/m: PREGf_IMPLICIT | PREGf_ANCH_MBOL
* caller will have set strpos=pos()-4; we look for the substr
* at position pos()-4+1, which lines up with the "a" */
- if (prog->check_offset_min == prog->check_offset_max
- && !(prog->intflags & PREGf_CANY_SEEN))
- {
+ if (prog->check_offset_min == prog->check_offset_max) {
/* Substring at constant offset from beg-of-str... */
SSize_t slen = SvCUR(check);
char *s = HOP3c(strpos, prog->check_offset_min, strend);
" At restart: rx_origin=%"IVdf" Check offset min: %"IVdf
" Start shift: %"IVdf" End shift %"IVdf
" Real end Shift: %"IVdf"\n",
- (IV)(rx_origin - strpos),
+ (IV)(rx_origin - strbeg),
(IV)prog->check_offset_min,
(IV)start_shift,
(IV)end_shift,
(IV)prog->check_end_shift);
});
- if (prog->intflags & PREGf_CANY_SEEN) {
- start_point= (U8*)(rx_origin + start_shift);
- end_point= (U8*)(strend - end_shift);
- if (start_point > end_point)
- goto fail_finish;
- } else {
- end_point = HOP3(strend, -end_shift, strbeg);
- start_point = HOPMAYBE3(rx_origin, start_shift, end_point);
- if (!start_point)
- goto fail_finish;
- }
+ end_point = HOP3(strend, -end_shift, strbeg);
+ start_point = HOPMAYBE3(rx_origin, start_shift, end_point);
+ if (!start_point)
+ goto fail_finish;
/* If the regex is absolutely anchored to either the start of the
}
}
- DEBUG_OPTIMISE_MORE_r({
- PerlIO_printf(Perl_debug_log, " fbm_instr len=%d str=<%.*s>\n",
- (int)(end_point - start_point),
- (int)(end_point - start_point) > 20 ? 20 : (int)(end_point - start_point),
- start_point);
- });
-
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",
+ (IV)((char*)start_point - strbeg),
+ (IV)((char*)end_point - strbeg),
+ (IV)(check_at ? check_at - strbeg : -1)
+ ));
+
/* Update the count-of-usability, remove useless subpatterns,
unshift s. */
if (!check_at)
goto fail_finish;
- /* Finish the diagnostic message */
- DEBUG_EXECUTE_r(PerlIO_printf(Perl_debug_log, "%ld...\n", (long)(check_at - strpos)) );
-
/* set rx_origin to the minimum position where the regex could start
* matching, given the constraint of the just-matched check substring.
* But don't set it lower than previously.
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",
+ (long)(check_at - strbeg),
+ (IV)(rx_origin - strbeg)
+ ));
}
must = utf8_target ? other->utf8_substr : other->substr;
assert(SvPOK(must));
- s = fbm_instr(
- (unsigned char*)s,
- (unsigned char*)last + SvCUR(must) - (SvTAIL(must)!=0),
- must,
- multiline ? FBMrf_MULTILINE : 0
- );
+ {
+ char *from = s;
+ char *to = last + SvCUR(must) - (SvTAIL(must)!=0);
+
+ if (from > to) {
+ s = NULL;
+ DEBUG_EXECUTE_r(PerlIO_printf(Perl_debug_log,
+ " skipping 'other' fbm scan: %"IVdf" > %"IVdf"\n",
+ (IV)(from - strbeg),
+ (IV)(to - strbeg)
+ ));
+ }
+ else {
+ s = fbm_instr(
+ (unsigned char*)from,
+ (unsigned char*)to,
+ must,
+ multiline ? FBMrf_MULTILINE : 0
+ );
+ DEBUG_EXECUTE_r(PerlIO_printf(Perl_debug_log,
+ " 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);
* find it before there, we never will */
if (last >= last1) {
DEBUG_EXECUTE_r(PerlIO_printf(Perl_debug_log,
- ", giving up...\n"));
+ "; giving up...\n"));
goto fail_finish;
}
/* try to find the check substr again at a later
* position. Maybe next time we'll find the "other" substr
* in range too */
- DEBUG_EXECUTE_r(PerlIO_printf(Perl_debug_log,
- ", trying %s at offset %ld...\n",
- (other_ix ? "floating" : "anchored"),
- (long)(HOP3c(check_at, 1, strend) - strpos)));
-
other_last = HOP3c(last, 1, strend) /* highest failure */;
rx_origin =
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",
+ (other_ix ? "floating" : "anchored"),
+ (long)(HOP3c(check_at, 1, strend) - strbeg),
+ (IV)(rx_origin - strbeg)
+ ));
goto restart;
}
else {
- DEBUG_EXECUTE_r(PerlIO_printf(Perl_debug_log, " at offset %ld...\n",
- (long)(s - strpos)));
-
if (other_ix) { /* if (other-is-float) */
/* other_last is set to s, not s+1, since its possible for
* a floating substr to fail first time, then succeed
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",
+ (long)(s - strbeg),
+ (IV)(rx_origin - strbeg)
+ ));
+
}
}
else {
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-strpos:%"IVdf"\n",
+ " strend:%"IVdf"\n",
(IV)prog->check_offset_min,
(IV)prog->check_offset_max,
- (IV)(check_at-strpos),
- (IV)(rx_origin-strpos),
+ (IV)(check_at-strbeg),
+ (IV)(rx_origin-strbeg),
(IV)(rx_origin-check_at),
- (IV)(strend-strpos)
+ (IV)(strend-strbeg)
)
);
}
* scanning ahead for the next \n or the next substr is debatable.
* On the one hand you'd expect rare substrings to appear less
* often than \n's. On the other hand, searching for \n means
- * we're effectively flipping been check_substr and "\n" on each
+ * we're effectively flipping between check_substr and "\n" on each
* iteration as the current "rarest" string candidate, which
* means for example that we'll quickly reject the whole string if
* hasn't got a \n, rather than trying every substr position
* 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,
- " Found /%s^%s/m, restarting lookup for check-string at offset %ld...\n",
- PL_colors[0], PL_colors[1], (long)(rx_origin - strpos)));
+ " 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;
}
* didn't contradict, so just retry the anchored "other"
* substr */
DEBUG_EXECUTE_r(PerlIO_printf(Perl_debug_log,
- " Found /%s^%s/m at offset %ld, rescanning for anchored from offset %ld...\n",
+ " Found /%s^%s/m, rescanning for anchored from offset %"IVdf" (rx_origin now %"IVdf")...\n",
PL_colors[0], PL_colors[1],
- (long)(rx_origin - strpos),
- (long)(rx_origin - strpos + prog->anchored_offset)));
+ (IV)(rx_origin - strbeg + prog->anchored_offset),
+ (IV)(rx_origin - strbeg)
+ ));
goto do_other_substr;
}
/* success: we don't contradict the found floating substring
* (and there's no anchored substr). */
DEBUG_EXECUTE_r(PerlIO_printf(Perl_debug_log,
- " Found /%s^%s/m at offset %ld...\n",
- PL_colors[0], PL_colors[1], (long)(rx_origin - strpos)));
+ " 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,
* The condition above is in bytes rather than
* chars for efficiency. It's conservative, in
* that it errs on the side of doing 'goto
- * do_other_substr', where a more accurate
- * char-based calculation will be done */
+ * do_other_substr'. In this case, at worst,
+ * 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,
- " Looking for anchored substr starting at offset %ld...\n",
- (long)(other_last - strpos)) );
+ " about to retry anchored at offset %ld (rx_origin now %"IVdf")...\n",
+ (long)(other_last - strbeg),
+ (IV)(rx_origin - strbeg)
+ ));
goto do_other_substr;
}
}
* search for the next \n if any, its safe here */
rx_origin++;
DEBUG_EXECUTE_r( PerlIO_printf(Perl_debug_log,
- " Looking for /%s^%s/m starting at offset %ld...\n",
+ " about to look for /%s^%s/m starting at rx_origin %ld...\n",
PL_colors[0], PL_colors[1],
- (long)(rx_origin - strpos)) );
+ (long)(rx_origin - strbeg)) );
goto postprocess_substr_matches;
}
goto fail;
}
DEBUG_EXECUTE_r( PerlIO_printf(Perl_debug_log,
- " Looking for %s substr starting at offset %ld...\n",
+ " 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 - strpos)) );
+ (long)(rx_origin + start_shift - strbeg),
+ (IV)(rx_origin - strbeg)
+ ));
goto restart;
}
if (rx_origin != s) {
DEBUG_EXECUTE_r(PerlIO_printf(Perl_debug_log,
" By STCLASS: moving %ld --> %ld\n",
- (long)(rx_origin - strpos), (long)(s - strpos))
+ (long)(rx_origin - strbeg), (long)(s - strbeg))
);
}
else {
DEBUG_EXECUTE_r(PerlIO_printf(Perl_debug_log,
"Intuit: %sSuccessfully guessed:%s match at offset %ld\n",
- PL_colors[4], PL_colors[5], (long)(rx_origin - strpos)) );
+ PL_colors[4], PL_colors[5], (long)(rx_origin - strbeg)) );
return rx_origin;
switch (trie_type) { \
case trie_flu8: \
_CHECK_AND_WARN_PROBLEMATIC_LOCALE; \
+ if (utf8_target && UTF8_IS_ABOVE_LATIN1(*uc)) { \
+ _CHECK_AND_OUTPUT_WIDE_LOCALE_UTF8_MSG(uc, uc + UTF8SKIP(uc)); \
+ } \
goto do_trie_utf8_fold; \
case trie_utf8_exactfa_fold: \
flags |= FOLD_FLAGS_NOMIX_ASCII; \
- /* FALLTHROUGH */ \
+ /* FALLTHROUGH */ \
case trie_utf8_fold: \
do_trie_utf8_fold: \
if ( foldlen>0 ) { \
} else { \
uvc = _to_utf8_fold_flags( (const U8*) uc, foldbuf, &foldlen, flags); \
len = UTF8SKIP(uc); \
- skiplen = UNISKIP( uvc ); \
+ skiplen = UVCHR_SKIP( uvc ); \
foldlen -= skiplen; \
uscan = foldbuf + skiplen; \
} \
break; \
case trie_latin_utf8_exactfa_fold: \
flags |= FOLD_FLAGS_NOMIX_ASCII; \
- /* FALLTHROUGH */ \
+ /* FALLTHROUGH */ \
case trie_latin_utf8_fold: \
if ( foldlen>0 ) { \
uvc = utf8n_to_uvchr( (const U8*) uscan, UTF8_MAXLEN, &len, uniflags ); \
} else { \
len = 1; \
uvc = _to_fold_latin1( (U8) *uc, foldbuf, &foldlen, flags); \
- skiplen = UNISKIP( uvc ); \
+ skiplen = UVCHR_SKIP( uvc ); \
foldlen -= skiplen; \
uscan = foldbuf + skiplen; \
} \
break; \
case trie_utf8l: \
_CHECK_AND_WARN_PROBLEMATIC_LOCALE; \
+ if (utf8_target && UTF8_IS_ABOVE_LATIN1(*uc)) { \
+ _CHECK_AND_OUTPUT_WIDE_LOCALE_UTF8_MSG(uc, uc + UTF8SKIP(uc)); \
+ } \
/* FALLTHROUGH */ \
case trie_utf8: \
uvc = utf8n_to_uvchr( (const U8*) uc, UTF8_MAXLEN, &len, uniflags ); \
FBC_UTF8(TEST_UV, TEST_UTF8, REXEC_FBC_TRYIT, PLACEHOLDER), \
TEST_NON_UTF8, REXEC_FBC_TRYIT, PLACEHOLDER)
-#define FBC_BOUND_A(TEST_NON_UTF8, TEST_UV, TEST_UTF8) \
+#define FBC_BOUND_A(TEST_NON_UTF8) \
FBC_BOUND_COMMON( \
FBC_UTF8_A(TEST_NON_UTF8, REXEC_FBC_TRYIT, PLACEHOLDER), \
TEST_NON_UTF8, REXEC_FBC_TRYIT, PLACEHOLDER)
FBC_UTF8(TEST_UV, TEST_UTF8, PLACEHOLDER, REXEC_FBC_TRYIT), \
TEST_NON_UTF8, PLACEHOLDER, REXEC_FBC_TRYIT)
-#define FBC_NBOUND_A(TEST_NON_UTF8, TEST_UV, TEST_UTF8) \
+#define FBC_NBOUND_A(TEST_NON_UTF8) \
FBC_BOUND_COMMON( \
FBC_UTF8_A(TEST_NON_UTF8, PLACEHOLDER, REXEC_FBC_TRYIT), \
TEST_NON_UTF8, PLACEHOLDER, REXEC_FBC_TRYIT)
+/* 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)]
+
+/* 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.
+ * And it takes the particular macro name that finds the desired value given a
+ * code point. Merely convert the UTF-8 to code point and call the cp macro */
+#define _generic_GET_BREAK_VAL_UTF8(cp_macro, pos, strend) \
+ (__ASSERT_(pos < strend) \
+ /* Note assumes is valid UTF-8 */ \
+ (cp_macro(utf8_to_uvchr_buf((pos), (strend), NULL))))
+
+/* Returns the GCB value for the input code point */
+#define getGCB_VAL_CP(cp) \
+ _generic_GET_BREAK_VAL_CP( \
+ PL_GCB_invlist, \
+ _Perl_GCB_invmap, \
+ (cp))
+
+/* Returns the GCB value for the first code point in the UTF-8 encoded string
+ * bounded by pos and strend */
+#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) \
+ _generic_GET_BREAK_VAL_CP( \
+ PL_SB_invlist, \
+ _Perl_SB_invmap, \
+ (cp))
+
+/* Returns the SB value for the first code point in the UTF-8 encoded string
+ * bounded by pos and strend */
+#define getSB_VAL_UTF8(pos, strend) \
+ _generic_GET_BREAK_VAL_UTF8(getSB_VAL_CP, pos, strend)
+
+/* Returns the WB value for the input code point */
+#define getWB_VAL_CP(cp) \
+ _generic_GET_BREAK_VAL_CP( \
+ PL_WB_invlist, \
+ _Perl_WB_invmap, \
+ (cp))
+
+/* Returns the WB value for the first code point in the UTF-8 encoded string
+ * bounded by pos and strend */
+#define getWB_VAL_UTF8(pos, strend) \
+ _generic_GET_BREAK_VAL_UTF8(getWB_VAL_CP, pos, strend)
/* We know what class REx starts with. Try to find this position... */
/* if reginfo->intuit, its a dryrun */
switch (OP(c)) {
case ANYOFL:
_CHECK_AND_WARN_PROBLEMATIC_LOCALE;
+
+ if (ANYOFL_UTF8_LOCALE_REQD(FLAGS(c)) && ! IN_UTF8_CTYPE_LOCALE) {
+ Perl_ck_warner(aTHX_ packWARN(WARN_LOCALE), utf8_locale_required);
+ }
+
/* FALLTHROUGH */
+ case ANYOFD:
case ANYOF:
if (utf8_target) {
REXEC_FBC_UTF8_CLASS_SCAN(
REXEC_FBC_CLASS_SCAN(REGINCLASS(prog, c, (U8*)s));
}
break;
- case CANY:
- REXEC_FBC_SCAN(
- if (tmp && (reginfo->intuit || regtry(reginfo, &s)))
- goto got_it;
- else
- tmp = doevery;
- );
- break;
case EXACTFA_NO_TRIE: /* This node only generated for non-utf8 patterns */
assert(! is_utf8_pat);
UTF-8 to express. */
break;
}
- utf8_fold_flags = FOLDEQ_S2_ALREADY_FOLDED;
+ utf8_fold_flags = FOLDEQ_LOCALE | FOLDEQ_S2_ALREADY_FOLDED
+ | FOLDEQ_S2_FOLDS_SANE;
goto do_exactf_utf8;
case EXACTFU:
/* FALLTHROUGH */
- do_exactf_non_utf8: /* Neither pattern nor string are UTF8, and there
+ do_exactf_non_utf8: /* Neither pattern nor string are UTF8, and there
are no glitches with fold-length differences
between the target string and pattern */
}
break;
- do_exactf_utf8:
- {
+ do_exactf_utf8:
+ {
unsigned expansion;
/* If one of the operands is in utf8, we can't use the simpler folding
case BOUNDL:
_CHECK_AND_WARN_PROBLEMATIC_LOCALE;
+ if (FLAGS(c) != TRADITIONAL_BOUND) {
+ if (! IN_UTF8_CTYPE_LOCALE) {
+ Perl_ck_warner(aTHX_ packWARN(WARN_LOCALE),
+ B_ON_NON_UTF8_LOCALE_IS_WRONG);
+ }
+ goto do_boundu;
+ }
+
FBC_BOUND(isWORDCHAR_LC, isWORDCHAR_LC_uvchr, isWORDCHAR_LC_utf8);
break;
+
case NBOUNDL:
_CHECK_AND_WARN_PROBLEMATIC_LOCALE;
+ if (FLAGS(c) != TRADITIONAL_BOUND) {
+ if (! IN_UTF8_CTYPE_LOCALE) {
+ Perl_ck_warner(aTHX_ packWARN(WARN_LOCALE),
+ B_ON_NON_UTF8_LOCALE_IS_WRONG);
+ }
+ goto do_nboundu;
+ }
+
FBC_NBOUND(isWORDCHAR_LC, isWORDCHAR_LC_uvchr, isWORDCHAR_LC_utf8);
break;
- case BOUND:
+
+ 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);
break;
- case BOUNDA:
- FBC_BOUND_A(isWORDCHAR_A, isWORDCHAR_A, isWORDCHAR_A);
+
+ case BOUNDA: /* regcomp.c makes sure that this only has the traditional \b
+ meaning */
+ assert(FLAGS(c) == TRADITIONAL_BOUND);
+
+ FBC_BOUND_A(isWORDCHAR_A);
break;
- case NBOUND:
+
+ case NBOUND: /* regcomp.c makes sure that this only has the traditional \b
+ meaning */
+ assert(FLAGS(c) == TRADITIONAL_BOUND);
+
FBC_NBOUND(isWORDCHAR, isWORDCHAR_uni, isWORDCHAR_utf8);
break;
- case NBOUNDA:
- FBC_NBOUND_A(isWORDCHAR_A, isWORDCHAR_A, isWORDCHAR_A);
- break;
- case BOUNDU:
- FBC_BOUND(isWORDCHAR_L1, isWORDCHAR_uni, isWORDCHAR_utf8);
+
+ case NBOUNDA: /* regcomp.c makes sure that this only has the traditional \b
+ meaning */
+ assert(FLAGS(c) == TRADITIONAL_BOUND);
+
+ FBC_NBOUND_A(isWORDCHAR_A);
break;
+
case NBOUNDU:
- FBC_NBOUND(isWORDCHAR_L1, isWORDCHAR_uni, isWORDCHAR_utf8);
+ if ((bound_type) FLAGS(c) == TRADITIONAL_BOUND) {
+ FBC_NBOUND(isWORDCHAR_L1, isWORDCHAR_uni, isWORDCHAR_utf8);
+ break;
+ }
+
+ do_nboundu:
+
+ to_complement = 1;
+ /* FALLTHROUGH */
+
+ case BOUNDU:
+ do_boundu:
+ switch((bound_type) FLAGS(c)) {
+ case TRADITIONAL_BOUND:
+ FBC_BOUND(isWORDCHAR_L1, isWORDCHAR_uni, isWORDCHAR_utf8);
+ break;
+ case GCB_BOUND:
+ if (s == reginfo->strbeg) {
+ if (reginfo->intuit || regtry(reginfo, &s))
+ {
+ goto got_it;
+ }
+
+ /* Didn't match. Try at the next position (if there is one) */
+ s += (utf8_target) ? UTF8SKIP(s) : 1;
+ if (UNLIKELY(s >= reginfo->strend)) {
+ break;
+ }
+ }
+
+ if (utf8_target) {
+ GCB_enum before = getGCB_VAL_UTF8(
+ reghop3((U8*)s, -1,
+ (U8*)(reginfo->strbeg)),
+ (U8*) reginfo->strend);
+ while (s < strend) {
+ GCB_enum after = getGCB_VAL_UTF8((U8*) s,
+ (U8*) reginfo->strend);
+ if ( (to_complement ^ isGCB(before, after))
+ && (reginfo->intuit || regtry(reginfo, &s)))
+ {
+ goto got_it;
+ }
+ before = after;
+ s += UTF8SKIP(s);
+ }
+ }
+ else { /* Not utf8. Everything is a GCB except between CR and
+ LF */
+ while (s < strend) {
+ if ((to_complement ^ ( UCHARAT(s - 1) != '\r'
+ || UCHARAT(s) != '\n'))
+ && (reginfo->intuit || regtry(reginfo, &s)))
+ {
+ goto got_it;
+ }
+ s++;
+ }
+ }
+
+ /* And, since this is a bound, it can match after the final
+ * character in the string */
+ if ((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)) {
+ goto got_it;
+ }
+ s += (utf8_target) ? UTF8SKIP(s) : 1;
+ if (UNLIKELY(s >= reginfo->strend)) {
+ break;
+ }
+ }
+
+ if (utf8_target) {
+ SB_enum before = getSB_VAL_UTF8(reghop3((U8*)s,
+ -1,
+ (U8*)(reginfo->strbeg)),
+ (U8*) reginfo->strend);
+ while (s < strend) {
+ SB_enum after = getSB_VAL_UTF8((U8*) s,
+ (U8*) reginfo->strend);
+ if ((to_complement ^ isSB(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. */
+ SB_enum before = getSB_VAL_CP((U8) *(s -1));
+ while (s < strend) {
+ SB_enum after = getSB_VAL_CP((U8) *s);
+ if ((to_complement ^ isSB(before,
+ after,
+ (U8*) reginfo->strbeg,
+ (U8*) s,
+ (U8*) reginfo->strend,
+ utf8_target))
+ && (reginfo->intuit || regtry(reginfo, &s)))
+ {
+ goto got_it;
+ }
+ before = after;
+ s++;
+ }
+ }
+
+ /* Here are at the final position in the target string. The SB
+ * value is always true here, so matches, depending on other
+ * constraints */
+ if (reginfo->intuit || regtry(reginfo, &s)) {
+ goto got_it;
+ }
+
+ break;
+
+ case WB_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) {
+ /* We are at a boundary between char_sub_0 and char_sub_1.
+ * We also keep track of the value for char_sub_-1 as we
+ * loop through the line. Context may be needed to make a
+ * determination, and if so, this can save having to
+ * recalculate it */
+ WB_enum previous = WB_UNKNOWN;
+ WB_enum before = getWB_VAL_UTF8(
+ reghop3((U8*)s,
+ -1,
+ (U8*)(reginfo->strbeg)),
+ (U8*) reginfo->strend);
+ while (s < strend) {
+ WB_enum after = getWB_VAL_UTF8((U8*) s,
+ (U8*) reginfo->strend);
+ if ((to_complement ^ isWB(previous,
+ before,
+ after,
+ (U8*) reginfo->strbeg,
+ (U8*) s,
+ (U8*) reginfo->strend,
+ utf8_target))
+ && (reginfo->intuit || regtry(reginfo, &s)))
+ {
+ goto got_it;
+ }
+ previous = before;
+ before = after;
+ s += UTF8SKIP(s);
+ }
+ }
+ else { /* Not utf8. */
+ WB_enum previous = WB_UNKNOWN;
+ WB_enum before = getWB_VAL_CP((U8) *(s -1));
+ while (s < strend) {
+ WB_enum after = getWB_VAL_CP((U8) *s);
+ if ((to_complement ^ isWB(previous,
+ before,
+ after,
+ (U8*) reginfo->strbeg,
+ (U8*) s,
+ (U8*) reginfo->strend,
+ utf8_target))
+ && (reginfo->intuit || regtry(reginfo, &s)))
+ {
+ goto got_it;
+ }
+ previous = before;
+ before = after;
+ s++;
+ }
+ }
+
+ if (reginfo->intuit || regtry(reginfo, &s)) {
+ goto got_it;
+ }
+ }
break;
+
case LNBREAK:
REXEC_FBC_CSCAN(is_LNBREAK_utf8_safe(s, strend),
is_LNBREAK_latin1_safe(s, strend)
}
else {
- posix_utf8:
+ posix_utf8:
classnum = (_char_class_number) FLAGS(c);
if (classnum < _FIRST_NON_SWASH_CC) {
while (s < strend) {
classnum)))
|| (UTF8_IS_DOWNGRADEABLE_START(*s)
&& to_complement ^ cBOOL(
- _generic_isCC(TWO_BYTE_UTF8_TO_NATIVE(*s,
+ _generic_isCC(EIGHT_BIT_UTF8_TO_NATIVE(*s,
*(s + 1)),
classnum))))
{
}
else switch (classnum) { /* These classes are implemented as
macros */
- case _CC_ENUM_SPACE: /* XXX would require separate code if we
- revert the change of \v matching this */
- /* FALLTHROUGH */
-
- case _CC_ENUM_PSXSPC:
+ case _CC_ENUM_SPACE:
REXEC_FBC_UTF8_CLASS_SCAN(
to_complement ^ cBOOL(isSPACE_utf8(s)));
break;
U32 n = 0;
max = -1;
/* calculate the right-most part of the string covered
- * by a capture. Due to look-ahead, this may be to
+ * by a capture. Due to lookahead, this may be to
* the right of $&, so we have to scan all captures */
while (n <= prog->lastparen) {
if (prog->offs[n].end > max)
U32 n = 0;
min = max;
/* calculate the left-most part of the string covered
- * by a capture. Due to look-behind, this may be to
+ * by a capture. Due to lookbehind, this may be to
* the left of $&, so we have to scan all captures */
while (min && n <= prog->lastparen) {
if ( prog->offs[n].start != -1
PERL_UNUSED_ARG(data);
/* Be paranoid... */
- if (prog == NULL || stringarg == NULL) {
+ if (prog == NULL) {
Perl_croak(aTHX_ "NULL regexp parameter");
}
startpos = stringarg;
+ /* set these early as they may be used by the HOP macros below */
+ reginfo->strbeg = strbeg;
+ reginfo->strend = strend;
+ reginfo->is_utf8_target = cBOOL(utf8_target);
+
if (prog->intflags & PREGf_GPOS_SEEN) {
MAGIC *mg;
reginfo->ganch =
(flags & REXEC_IGNOREPOS)
? stringarg /* use start pos rather than pos() */
- : (sv && (mg = mg_find_mglob(sv)) && mg->mg_len >= 0)
+ : ((mg = mg_find_mglob(sv)) && mg->mg_len >= 0)
/* Defined pos(): */
? strbeg + MgBYTEPOS(mg, sv, strbeg, strend-strbeg)
: strbeg; /* pos() not defined; use start of string */
*/
if (prog->intflags & PREGf_ANCH_GPOS) {
- startpos = reginfo->ganch - prog->gofs;
- if (startpos <
- ((flags & REXEC_FAIL_ON_UNDERFLOW) ? stringarg : strbeg))
- {
- DEBUG_r(PerlIO_printf(Perl_debug_log,
- "fail: ganch-gofs before earliest possible start\n"));
- return 0;
+ if (prog->gofs) {
+ startpos = HOPBACKc(reginfo->ganch, prog->gofs);
+ if (!startpos ||
+ ((flags & REXEC_FAIL_ON_UNDERFLOW) && startpos < stringarg))
+ {
+ DEBUG_r(PerlIO_printf(Perl_debug_log,
+ "fail: ganch-gofs before earliest possible start\n"));
+ return 0;
+ }
}
+ else
+ startpos = reginfo->ganch;
}
else if (prog->gofs) {
- if (startpos - prog->gofs < strbeg)
+ startpos = HOPBACKc(startpos, prog->gofs);
+ if (!startpos)
startpos = strbeg;
- else
- startpos -= prog->gofs;
}
else if (prog->intflags & PREGf_GPOS_FLOAT)
startpos = strbeg;
reginfo->prog = rx; /* Yes, sorry that this is confusing. */
reginfo->intuit = 0;
- reginfo->is_utf8_target = cBOOL(utf8_target);
reginfo->is_utf8_pat = cBOOL(RX_UTF8(rx));
reginfo->warned = FALSE;
- reginfo->strbeg = strbeg;
reginfo->sv = sv;
reginfo->poscache_maxiter = 0; /* not yet started a countdown */
- reginfo->strend = strend;
/* see how far we have to get to not match where we matched before */
reginfo->till = stringarg + minend;
));
}
- /* Simplest case: anchored match need be tried only once. */
- /* [unless only anchor is MBOL - implying multiline is set] */
+ /* Simplest case: anchored match need be tried only once, or with
+ * MBOL, only at the beginning of each line.
+ *
+ * Note that /.*.../ sets PREGf_IMPLICIT|MBOL, while /.*.../s sets
+ * PREGf_IMPLICIT|SBOL. The idea is that with /.*.../s, if it doesn't
+ * match at the start of the string then it won't match anywhere else
+ * either; while with /.*.../, if it doesn't match at the beginning,
+ * the earliest it could match is at the start of the next line */
+
if (prog->intflags & (PREGf_ANCH & ~PREGf_ANCH_GPOS)) {
- if (s == startpos && regtry(reginfo, &s))
+ char *end;
+
+ if (regtry(reginfo, &s))
goto got_it;
- else if (multiline || (prog->intflags & (PREGf_IMPLICIT | PREGf_ANCH_MBOL))) /* XXXX SBOL? */
- {
- char *end;
-
- if (minlen)
- dontbother = minlen - 1;
- end = HOP3c(strend, -dontbother, strbeg) - 1;
- /* for multiline we only have to try after newlines */
- if (prog->check_substr || prog->check_utf8) {
- /* because of the goto we can not easily reuse the macros for bifurcating the
- unicode/non-unicode match modes here like we do elsewhere - demerphq */
- if (utf8_target) {
- if (s == startpos)
- goto after_try_utf8;
- while (1) {
- if (regtry(reginfo, &s)) {
- goto got_it;
- }
- after_try_utf8:
- if (s > end) {
- goto phooey;
- }
- if (prog->extflags & RXf_USE_INTUIT) {
- s = re_intuit_start(rx, sv, strbeg,
- s + UTF8SKIP(s), strend, flags, NULL);
- if (!s) {
- goto phooey;
- }
- }
- else {
- s += UTF8SKIP(s);
- }
- }
- } /* end search for check string in unicode */
- else {
- if (s == startpos) {
- goto after_try_latin;
- }
- while (1) {
- if (regtry(reginfo, &s)) {
- goto got_it;
- }
- after_try_latin:
- if (s > end) {
- goto phooey;
- }
- if (prog->extflags & RXf_USE_INTUIT) {
- s = re_intuit_start(rx, sv, strbeg,
- s + 1, strend, flags, NULL);
- if (!s) {
- goto phooey;
- }
- }
- else {
- s++;
- }
- }
- } /* end search for check string in latin*/
- } /* end search for check string */
- else { /* search for newline */
- if (s > startpos) {
- /*XXX: The s-- is almost definitely wrong here under unicode - demeprhq*/
- s--;
- }
- /* We can use a more efficient search as newlines are the same in unicode as they are in latin */
- while (s <= end) { /* note it could be possible to match at the end of the string */
- if (*s++ == '\n') { /* don't need PL_utf8skip here */
- if (regtry(reginfo, &s))
- goto got_it;
- }
- }
- } /* end search for newline */
- } /* end anchored/multiline check string search */
- goto phooey;
- } else if (prog->intflags & PREGf_ANCH_GPOS)
+
+ if (!(prog->intflags & PREGf_ANCH_MBOL))
+ goto phooey;
+
+ /* didn't match at start, try at other newline positions */
+
+ if (minlen)
+ dontbother = minlen - 1;
+ end = HOP3c(strend, -dontbother, strbeg) - 1;
+
+ /* skip to next newline */
+
+ while (s <= end) { /* note it could be possible to match at the end of the string */
+ /* NB: newlines are the same in unicode as they are in latin */
+ if (*s++ != '\n')
+ continue;
+ if (prog->check_substr || prog->check_utf8) {
+ /* note that with PREGf_IMPLICIT, intuit can only fail
+ * or return the start position, so it's of limited utility.
+ * Nevertheless, I made the decision that the potential for
+ * quick fail was still worth it - DAPM */
+ s = re_intuit_start(rx, sv, strbeg, s, strend, flags, NULL);
+ if (!s)
+ goto phooey;
+ }
+ if (regtry(reginfo, &s))
+ goto got_it;
+ }
+ goto phooey;
+ } /* end anchored search */
+
+ if (prog->intflags & PREGf_ANCH_GPOS)
{
/* PREGf_ANCH_GPOS should never be true if PREGf_GPOS_SEEN is not true */
assert(prog->intflags & PREGf_GPOS_SEEN);
/* For anchored \G, the only position it can match from is
* (ganch-gofs); we already set startpos to this above; if intuit
* moved us on from there, we can't possibly succeed */
- assert(startpos == reginfo->ganch - prog->gofs);
+ assert(startpos == HOPBACKc(reginfo->ganch, prog->gofs));
if (s == startpos && regtry(reginfo, &s))
goto got_it;
goto phooey;
if (minlen) {
const OPCODE op = OP(progi->regstclass);
/* don't bother with what can't match */
- if (PL_regkind[op] != EXACT && op != CANY && PL_regkind[op] != TRIE)
+ if (PL_regkind[op] != EXACT && PL_regkind[op] != TRIE)
strend = HOPc(strend, -(minlen - 1));
}
DEBUG_EXECUTE_r({
/* Failure. */
goto phooey;
-got_it:
+ got_it:
/* s/// doesn't like it if $& is earlier than where we asked it to
* start searching (which can happen on something like /.\G/) */
if ( (flags & REXEC_FAIL_ON_UNDERFLOW)
return 1;
-phooey:
+ phooey:
DEBUG_EXECUTE_r(PerlIO_printf(Perl_debug_log, "%sMatch failed%s\n",
PL_colors[4], PL_colors[5]));
/*
- regtry - try match at specific point
*/
-STATIC I32 /* 0 failure, 1 success */
+STATIC bool /* 0 failure, 1 success */
S_regtry(pTHX_ regmatch_info *reginfo, char **startposp)
{
CHECKPOINT lastcp;
if (pref0_len > pref_len)
pref0_len = pref_len;
{
- const int is_uni = (utf8_target && OP(scan) != CANY) ? 1 : 0;
+ 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);
character */
switch (OP(text_node)) {
- case EXACTFL: /* /l rules */
- c2 = PL_fold_locale[c1];
- break;
+ case EXACTFL: /* /l rules */
+ c2 = PL_fold_locale[c1];
+ break;
+
+ case EXACTF: /* This node only generated for non-utf8
+ patterns */
+ assert(! is_utf8_pat);
+ if (! utf8_target) { /* /d rules */
+ c2 = PL_fold[c1];
+ break;
+ }
+ /* FALLTHROUGH */
+ /* /u rules for all these. This happens to work for
+ * EXACTFA as nothing in Latin1 folds to ASCII */
+ case EXACTFA_NO_TRIE: /* This node only generated for
+ non-utf8 patterns */
+ assert(! is_utf8_pat);
+ /* FALLTHROUGH */
+ case EXACTFA:
+ case EXACTFU_SS:
+ case EXACTFU:
+ c2 = PL_fold_latin1[c1];
+ break;
+
+ default:
+ Perl_croak(aTHX_ "panic: Unexpected op %u", OP(text_node));
+ NOT_REACHED; /* NOTREACHED */
+ }
+ }
+ }
+ }
+
+ /* Here have figured things out. Set up the returns */
+ if (use_chrtest_void) {
+ *c2p = *c1p = CHRTEST_VOID;
+ }
+ else if (utf8_target) {
+ if (! utf8_has_been_setup) { /* Don't have the utf8; must get it */
+ uvchr_to_utf8(c1_utf8, c1);
+ uvchr_to_utf8(c2_utf8, c2);
+ }
+
+ /* Invariants are stored in both the utf8 and byte outputs; Use
+ * negative numbers otherwise for the byte ones. Make sure that the
+ * byte ones are the same iff the utf8 ones are the same */
+ *c1p = (UTF8_IS_INVARIANT(*c1_utf8)) ? *c1_utf8 : CHRTEST_NOT_A_CP_1;
+ *c2p = (UTF8_IS_INVARIANT(*c2_utf8))
+ ? *c2_utf8
+ : (c1 == c2)
+ ? CHRTEST_NOT_A_CP_1
+ : CHRTEST_NOT_A_CP_2;
+ }
+ else if (c1 > 255) {
+ if (c2 > 255) { /* both possibilities are above what a non-utf8 string
+ can represent */
+ return FALSE;
+ }
+
+ *c1p = *c2p = c2; /* c2 is the only representable value */
+ }
+ else { /* c1 is representable; see about c2 */
+ *c1p = c1;
+ *c2p = (c2 < 256) ? c2 : c1;
+ }
+
+ return TRUE;
+}
+
+PERL_STATIC_INLINE bool
+S_isGCB(const GCB_enum before, const GCB_enum after)
+{
+ /* returns a boolean indicating if there is a Grapheme Cluster Boundary
+ * between the inputs. See http://www.unicode.org/reports/tr29/ */
+
+ return GCB_table[before][after];
+}
+
+/* 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 8.0 */
+
+ redo:
+ before = prev;
+ switch (LB_table[before][after]) {
+ case LB_BREAKABLE:
+ return TRUE;
+
+ case LB_NOBREAK:
+ case LB_NOBREAK_EVEN_WITH_SP_BETWEEN:
+ return FALSE;
+
+ case LB_SP_foo + LB_BREAKABLE:
+ case LB_SP_foo + LB_NOBREAK:
+ case LB_SP_foo + LB_NOBREAK_EVEN_WITH_SP_BETWEEN:
+
+ /* 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;
+ }
+
+ /* 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;
+ }
+
+ /* If we get here, we have to XXX consider combining marks. */
+ if (prev == LB_Combining_Mark) {
+
+ /* 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);
+
+ /* 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;
+ }
+ }
+
+ /* 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_foo:
+
+ /* We don't know how to treat the CM except by looking at the first
+ * non-CM character preceding it */
+ do {
+ prev = backup_one_LB(strbeg, &temp_pos, utf8_target);
+ }
+ while (prev == LB_Combining_Mark);
+
+ /* 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;
+ }
+
+ default:
+ break;
+ }
+
+#ifdef DEBUGGING
+ PerlIO_printf(Perl_error_log, "Unhandled LB pair: LB_table[%d, %d] = %d\n",
+ before, after, LB_table[before][after]);
+ assert(0);
+#endif
+ return TRUE;
+}
+
+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;
+}
+
+/* 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 SBcase(before, after) ((SB_ENUM_COUNT * before) + after)
+
+STATIC bool
+S_isSB(pTHX_ SB_enum before,
+ SB_enum after,
+ const U8 * const strbeg,
+ const U8 * const curpos,
+ const U8 * const strend,
+ const bool utf8_target)
+{
+ /* returns a boolean indicating if there is a Sentence Boundary Break
+ * between the inputs. See http://www.unicode.org/reports/tr29/ */
+
+ U8 * lpos = (U8 *) curpos;
+ U8 * temp_pos;
+ SB_enum backup;
+
+ PERL_ARGS_ASSERT_ISSB;
+
+ /* Break at the start and end of text.
+ SB1. sot ÷
+ SB2. ÷ eot */
+ if (before == SB_EDGE || after == SB_EDGE) {
+ return TRUE;
+ }
+
+ /* SB 3: Do not break within CRLF. */
+ if (before == SB_CR && after == SB_LF) {
+ return FALSE;
+ }
+
+ /* Break after paragraph separators. (though why CR and LF are considered
+ * so is beyond me (khw)
+ SB4. Sep | CR | LF ÷ */
+ if (before == SB_Sep || before == SB_CR || before == SB_LF) {
+ return TRUE;
+ }
+
+ /* Ignore Format and Extend characters, except after sot, Sep, CR, or LF.
+ * (See Section 6.2, Replacing Ignore Rules.)
+ SB5. X (Extend | Format)* → X */
+ if (after == SB_Extend || after == SB_Format) {
+ return FALSE;
+ }
+
+ if (before == SB_Extend || before == SB_Format) {
+ before = backup_one_SB(strbeg, &lpos, utf8_target);
+ }
+
+ /* Do not break after ambiguous terminators like period, if they are
+ * immediately followed by a number or lowercase letter, if they are
+ * between uppercase letters, if the first following letter (optionally
+ * after certain punctuation) is lowercase, or if they are followed by
+ * "continuation" punctuation such as comma, colon, or semicolon. For
+ * example, a period may be an abbreviation or numeric period, and thus may
+ * not mark the end of a sentence.
+
+ * SB6. ATerm × Numeric */
+ if (before == SB_ATerm && after == SB_Numeric) {
+ return FALSE;
+ }
+
+ /* SB7. (Upper | Lower) ATerm × Upper */
+ if (before == SB_ATerm && after == SB_Upper) {
+ temp_pos = lpos;
+ 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;
+ }
+
+ /* 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;
+ }
+ }
+
+ /* 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;
+ }
+
+
+ /* 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) {
+ return TRUE;
+ }
+
+ /* Otherwise, do not break.
+ SB12. Any × Any */
+
+ return FALSE;
+}
+
+STATIC SB_enum
+S_advance_one_SB(pTHX_ U8 ** curpos, const U8 * const strend, const bool utf8_target)
+{
+ SB_enum sb;
+
+ PERL_ARGS_ASSERT_ADVANCE_ONE_SB;
+
+ if (*curpos >= strend) {
+ return SB_EDGE;
+ }
+
+ if (utf8_target) {
+ do {
+ *curpos += UTF8SKIP(*curpos);
+ if (*curpos >= strend) {
+ return SB_EDGE;
+ }
+ sb = getSB_VAL_UTF8(*curpos, strend);
+ } while (sb == SB_Extend || sb == SB_Format);
+ }
+ else {
+ do {
+ (*curpos)++;
+ if (*curpos >= strend) {
+ return SB_EDGE;
+ }
+ sb = getSB_VAL_CP(**curpos);
+ } while (sb == SB_Extend || sb == SB_Format);
+ }
+
+ return sb;
+}
+
+STATIC SB_enum
+S_backup_one_SB(pTHX_ const U8 * const strbeg, U8 ** curpos, const bool utf8_target)
+{
+ SB_enum sb;
+
+ PERL_ARGS_ASSERT_BACKUP_ONE_SB;
+
+ if (*curpos < strbeg) {
+ return SB_EDGE;
+ }
+
+ if (utf8_target) {
+ U8 * prev_char_pos = reghopmaybe3(*curpos, -1, strbeg);
+ if (! prev_char_pos) {
+ return SB_EDGE;
+ }
+
+ /* Back up over Extend and Format. curpos is always just to the right
+ * of the characater whose value we are getting */
+ do {
+ U8 * prev_prev_char_pos;
+ if ((prev_prev_char_pos = reghopmaybe3((U8 *) prev_char_pos, -1,
+ strbeg)))
+ {
+ sb = getSB_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 SB_EDGE;
+ }
+ } while (sb == SB_Extend || sb == SB_Format);
+ }
+ else {
+ do {
+ if (*curpos - 2 < strbeg) {
+ *curpos = (U8 *) strbeg;
+ return SB_EDGE;
+ }
+ (*curpos)--;
+ sb = getSB_VAL_CP(*(*curpos - 1));
+ } while (sb == SB_Extend || sb == SB_Format);
+ }
+
+ return sb;
+}
+
+#define WBcase(before, after) ((WB_ENUM_COUNT * before) + after)
+
+STATIC bool
+S_isWB(pTHX_ WB_enum previous,
+ WB_enum before,
+ WB_enum after,
+ const U8 * const strbeg,
+ const U8 * const curpos,
+ const U8 * const strend,
+ 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, 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
+ * boundaries and current position in the matching of the string. That
+ * is, 'curpos' marks the position where the character whose wb value is
+ * 'after' begins. See http://www.unicode.org/reports/tr29/ */
+
+ U8 * before_pos = (U8 *) curpos;
+ U8 * after_pos = (U8 *) curpos;
+
+ PERL_ARGS_ASSERT_ISWB;
+
+ /* WB1 and WB2: Break at the start and end of text. */
+ if (before == WB_EDGE || after == WB_EDGE) {
+ return TRUE;
+ }
+
+ /* WB 3 is: "Do not break within CRLF." Perl extends this so that all
+ * white space sequences ending in a vertical space are treated as one
+ * unit. */
+
+ if (after == WB_CR || after == WB_LF || after == WB_Newline) {
+ if (before == WB_CR || before == WB_LF || before == WB_Newline
+ || before == WB_Perl_Tailored_HSpace)
+ {
+ return FALSE;
+ }
+
+ /* WB 3a: Otherwise break before Newlines (including CR and LF) */
+ return TRUE;
+ }
+
+ /* Here, we know that 'after' is not a vertical space character, but
+ * 'before' could be. WB 3b is: "Otherwise break after Newlines (including
+ * CR and LF)." Perl changes that to not break-up spans of white space,
+ * except when horizontal space is followed by an Extend or Format
+ * character. These apply just to the final white space character in the
+ * span, so it is broken away from the rest. (If the Extend or Format
+ * character follows a vertical space character, it is treated as beginning
+ * a line, and doesn't modify the preceeding character.) */
+ if ( before == WB_CR || before == WB_LF || before == WB_Newline
+ || before == WB_Perl_Tailored_HSpace)
+ {
+ if (after == WB_Perl_Tailored_HSpace) {
+ U8 * temp_pos = (U8 *) curpos;
+ const WB_enum next
+ = advance_one_WB(&temp_pos, strend, utf8_target,
+ FALSE /* Don't skip Extend nor Format */ );
+ return next == WB_Extend || next == WB_Format;
+ }
+ else if (before != WB_Perl_Tailored_HSpace) {
+
+ /* Here, 'before' must be one of the vertical space characters, and
+ * after is not any type of white-space. Follow WB 3b. */
+ return TRUE;
+ }
+
+ /* Here, 'before' is horizontal space, and 'after' is not any kind of
+ * space. Normal rules apply */
+ }
+
+ /* Ignore Format and Extend characters, except when they appear at the
+ * beginning of a region of text.
+ * WB4. X (Extend | Format)* → X. */
+
+ if (after == WB_Extend || after == WB_Format) {
+ return FALSE;
+ }
+
+ if (before == WB_Extend || before == WB_Format) {
+ before = backup_one_WB(&previous, strbeg, &before_pos, utf8_target);
+ }
+
+ switch (WBcase(before, after)) {
+ /* Otherwise, break everywhere (including around ideographs).
+ WB14. Any ÷ Any */
+ default:
+ return TRUE;
+
+ /* 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):
+ 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,
+ TRUE /* Do skip Extend and Format */ );
+ 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;
+
+ /* WB7b. Hebrew_Letter × Double_Quote Hebrew_Letter */
+ case WBcase(WB_Hebrew_Letter, WB_Double_Quote):
+ return advance_one_WB(&after_pos, strend, utf8_target,
+ TRUE /* Do skip Extend and Format */ )
+ != WB_Hebrew_Letter;
+
+ /* 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;
+
+ /* 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;
+
+ /* WB9. (ALetter | Hebrew_Letter) × Numeric */
+ case WBcase(WB_ALetter, WB_Numeric):
+ case WBcase(WB_Hebrew_Letter, WB_Numeric):
+ return FALSE;
+
+ /* WB10. Numeric × (ALetter | Hebrew_Letter) */
+ case WBcase(WB_Numeric, WB_ALetter):
+ case WBcase(WB_Numeric, WB_Hebrew_Letter):
+ return FALSE;
+
+ /* 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,
+ TRUE /* Do skip Extend and Format */ )
+ != WB_Numeric;
+
+ /* Do not break between Katakana.
+ WB13. Katakana × Katakana */
+ case WBcase(WB_Katakana, WB_Katakana):
+ return FALSE;
+
+ /* 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):
+ return FALSE;
+
+ /* 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):
+ return FALSE;
+
+ /* Do not break between regional indicator symbols.
+ WB13c. Regional_Indicator × Regional_Indicator */
+ case WBcase(WB_Regional_Indicator, WB_Regional_Indicator):
+ return FALSE;
+
+ }
+
+ NOT_REACHED; /* NOTREACHED */
+}
+
+STATIC WB_enum
+S_advance_one_WB(pTHX_ U8 ** curpos,
+ const U8 * const strend,
+ const bool utf8_target,
+ const bool skip_Extend_Format)
+{
+ WB_enum wb;
+
+ PERL_ARGS_ASSERT_ADVANCE_ONE_WB;
+
+ if (*curpos >= strend) {
+ return WB_EDGE;
+ }
+
+ if (utf8_target) {
+
+ /* Advance over Extend and Format */
+ do {
+ *curpos += UTF8SKIP(*curpos);
+ if (*curpos >= strend) {
+ return WB_EDGE;
+ }
+ wb = getWB_VAL_UTF8(*curpos, strend);
+ } while ( skip_Extend_Format
+ && (wb == WB_Extend || wb == WB_Format));
+ }
+ else {
+ do {
+ (*curpos)++;
+ if (*curpos >= strend) {
+ return WB_EDGE;
+ }
+ wb = getWB_VAL_CP(**curpos);
+ } while ( skip_Extend_Format
+ && (wb == WB_Extend || wb == WB_Format));
+ }
+
+ return wb;
+}
- case EXACTF: /* This node only generated for non-utf8
- patterns */
- assert(! is_utf8_pat);
- if (! utf8_target) { /* /d rules */
- c2 = PL_fold[c1];
- break;
- }
- /* FALLTHROUGH */
- /* /u rules for all these. This happens to work for
- * EXACTFA as nothing in Latin1 folds to ASCII */
- case EXACTFA_NO_TRIE: /* This node only generated for
- non-utf8 patterns */
- assert(! is_utf8_pat);
- /* FALLTHROUGH */
- case EXACTFA:
- case EXACTFU_SS:
- case EXACTFU:
- c2 = PL_fold_latin1[c1];
- break;
+STATIC WB_enum
+S_backup_one_WB(pTHX_ WB_enum * previous, const U8 * const strbeg, U8 ** curpos, const bool utf8_target)
+{
+ WB_enum wb;
- default:
- Perl_croak(aTHX_ "panic: Unexpected op %u", OP(text_node));
- NOT_REACHED; /* NOTREACHED */
- }
+ PERL_ARGS_ASSERT_BACKUP_ONE_WB;
+
+ /* If we know what the previous character's break value is, don't have
+ * to look it up */
+ if (*previous != WB_UNKNOWN) {
+ wb = *previous;
+
+ /* But we need to move backwards by one */
+ if (utf8_target) {
+ *curpos = reghopmaybe3(*curpos, -1, strbeg);
+ if (! *curpos) {
+ *previous = WB_EDGE;
+ *curpos = (U8 *) strbeg;
+ }
+ else {
+ *previous = WB_UNKNOWN;
}
}
- }
+ else {
+ (*curpos)--;
+ *previous = (*curpos <= strbeg) ? WB_EDGE : WB_UNKNOWN;
+ }
- /* Here have figured things out. Set up the returns */
- if (use_chrtest_void) {
- *c2p = *c1p = CHRTEST_VOID;
- }
- else if (utf8_target) {
- if (! utf8_has_been_setup) { /* Don't have the utf8; must get it */
- uvchr_to_utf8(c1_utf8, c1);
- uvchr_to_utf8(c2_utf8, c2);
+ /* And we always back up over these two types */
+ if (wb != WB_Extend && wb != WB_Format) {
+ return wb;
}
+ }
- /* Invariants are stored in both the utf8 and byte outputs; Use
- * negative numbers otherwise for the byte ones. Make sure that the
- * byte ones are the same iff the utf8 ones are the same */
- *c1p = (UTF8_IS_INVARIANT(*c1_utf8)) ? *c1_utf8 : CHRTEST_NOT_A_CP_1;
- *c2p = (UTF8_IS_INVARIANT(*c2_utf8))
- ? *c2_utf8
- : (c1 == c2)
- ? CHRTEST_NOT_A_CP_1
- : CHRTEST_NOT_A_CP_2;
+ if (*curpos < strbeg) {
+ return WB_EDGE;
}
- else if (c1 > 255) {
- if (c2 > 255) { /* both possibilities are above what a non-utf8 string
- can represent */
- return FALSE;
- }
- *c1p = *c2p = c2; /* c2 is the only representable value */
+ if (utf8_target) {
+ U8 * prev_char_pos = reghopmaybe3(*curpos, -1, strbeg);
+ if (! prev_char_pos) {
+ return WB_EDGE;
+ }
+
+ /* Back up over Extend and Format. curpos is always just to the right
+ * of the characater whose value we are getting */
+ do {
+ U8 * prev_prev_char_pos;
+ if ((prev_prev_char_pos = reghopmaybe3((U8 *) prev_char_pos,
+ -1,
+ strbeg)))
+ {
+ wb = getWB_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 WB_EDGE;
+ }
+ } while (wb == WB_Extend || wb == WB_Format);
}
- else { /* c1 is representable; see about c2 */
- *c1p = c1;
- *c2p = (c2 < 256) ? c2 : c1;
+ else {
+ do {
+ if (*curpos - 2 < strbeg) {
+ *curpos = (U8 *) strbeg;
+ return WB_EDGE;
+ }
+ (*curpos)--;
+ wb = getWB_VAL_CP(*(*curpos - 1));
+ } while (wb == WB_Extend || wb == WB_Format);
}
- return TRUE;
+ return wb;
}
/* returns -1 on failure, $+[0] on success */
int to_complement; /* Invert the result? */
_char_class_number classnum;
bool is_utf8_pat = reginfo->is_utf8_pat;
+ bool match = FALSE;
+
#ifdef DEBUGGING
GET_RE_DEBUG_FLAGS_DECL;
rex->offs[0].start = locinput - reginfo->strbeg;
PUSH_STATE_GOTO(KEEPS_next, next, locinput);
/* NOTREACHED */
- NOT_REACHED;
+ NOT_REACHED; /* NOTREACHED */
case KEEPS_next_fail:
/* rollback the start point change */
rex->offs[0].start = st->u.keeper.val;
sayNO_SILENT;
/* NOTREACHED */
- NOT_REACHED;
+ NOT_REACHED; /* NOTREACHED */
case MEOL: /* /..$/m */
if (!NEXTCHR_IS_EOS && nextchr != '\n')
sayNO;
goto increment_locinput;
- case CANY: /* \C */
- if (NEXTCHR_IS_EOS)
- sayNO;
- locinput++;
- break;
-
case REG_ANY: /* /./ */
if ((NEXTCHR_IS_EOS) || nextchr == '\n')
sayNO;
);
sayNO_SILENT;
/* NOTREACHED */
- NOT_REACHED;
+ NOT_REACHED; /* NOTREACHED */
}
/* FALLTHROUGH */
case TRIE: /* (ab|cd) */
if (scan->flags == EXACTL || scan->flags == EXACTFLU8) {
_CHECK_AND_WARN_PROBLEMATIC_LOCALE;
+ if (utf8_target
+ && UTF8_IS_ABOVE_LATIN1(nextchr)
+ && scan->flags == EXACTL)
+ {
+ /* We only output for EXACTL, as we let the folder
+ * output this message for EXACTFLU8 to avoid
+ * duplication */
+ _CHECK_AND_OUTPUT_WIDE_LOCALE_UTF8_MSG(locinput,
+ reginfo->strend);
+ }
}
if ( trie->bitmap
&& (NEXTCHR_IS_EOS || !TRIE_BITMAP_TEST(trie, nextchr)))
goto trie_first_try; /* jump into the fail handler */
}}
/* NOTREACHED */
- NOT_REACHED;
+ NOT_REACHED; /* NOTREACHED */
case TRIE_next_fail: /* we failed - try next alternative */
{
if (ST.accepted > 1 || has_cutgroup) {
PUSH_STATE_GOTO(TRIE_next, scan, (char*)uc);
/* NOTREACHED */
- NOT_REACHED;
+ NOT_REACHED; /* NOTREACHED */
}
/* only one choice left - just continue */
DEBUG_EXECUTE_r({
AV *const trie_words
= MUTABLE_AV(rexi->data->data[ARG(ST.me)+TRIE_WORDS_OFFSET]);
- SV ** const tmp = av_fetch( trie_words,
- ST.nextword-1, 0 );
+ SV ** const tmp = trie_words
+ ? av_fetch(trie_words, ST.nextword - 1, 0) : NULL;
SV *sv= tmp ? sv_newmortal() : NULL;
PerlIO_printf( Perl_debug_log,
case EXACTL: /* /abc/l */
_CHECK_AND_WARN_PROBLEMATIC_LOCALE;
+
+ /* Complete checking would involve going through every character
+ * matched by the string to see if any is above latin1. But the
+ * comparision otherwise might very well be a fast assembly
+ * language routine, and I (khw) don't think slowing things down
+ * just to check for this warning is worth it. So this just checks
+ * the first character */
+ if (utf8_target && UTF8_IS_ABOVE_LATIN1(*locinput)) {
+ _CHECK_AND_OUTPUT_WIDE_LOCALE_UTF8_MSG(locinput, reginfo->strend);
+ }
/* FALLTHROUGH */
case EXACT: { /* /abc/ */
char *s = STRING(scan);
l++;
}
else {
- if (TWO_BYTE_UTF8_TO_NATIVE(*l, *(l+1)) != * (U8*) s)
+ if (EIGHT_BIT_UTF8_TO_NATIVE(*l, *(l+1)) != * (U8*) s)
{
sayNO;
}
s++;
}
else {
- if (TWO_BYTE_UTF8_TO_NATIVE(*s, *(s+1)) != * (U8*) l)
+ if (EIGHT_BIT_UTF8_TO_NATIVE(*s, *(s+1)) != * (U8*) l)
{
sayNO;
}
if (! utf8_target) {
sayNO;
}
- fold_utf8_flags = FOLDEQ_S1_ALREADY_FOLDED;
+ fold_utf8_flags = FOLDEQ_LOCALE | FOLDEQ_S1_ALREADY_FOLDED
+ | FOLDEQ_S1_FOLDS_SANE;
+ folder = foldEQ_latin1;
+ fold_array = PL_fold_latin1;
goto do_exactf;
case EXACTFU_SS: /* /\x{df}/iu */
break;
}
- /* XXX Could improve efficiency by separating these all out using a
- * macro or in-line function. At that point regcomp.c would no longer
- * have to set the FLAGS fields of these */
- case BOUNDL: /* /\b/l */
case NBOUNDL: /* /\B/l */
+ to_complement = 1;
+ /* FALLTHROUGH */
+
+ case BOUNDL: /* /\b/l */
+ {
+ bool b1, b2;
_CHECK_AND_WARN_PROBLEMATIC_LOCALE;
+
+ if (FLAGS(scan) != TRADITIONAL_BOUND) {
+ if (! IN_UTF8_CTYPE_LOCALE) {
+ Perl_ck_warner(aTHX_ packWARN(WARN_LOCALE),
+ B_ON_NON_UTF8_LOCALE_IS_WRONG);
+ }
+ goto boundu;
+ }
+
+ if (utf8_target) {
+ if (locinput == reginfo->strbeg)
+ b1 = isWORDCHAR_LC('\n');
+ else {
+ b1 = isWORDCHAR_LC_utf8(reghop3((U8*)locinput, -1,
+ (U8*)(reginfo->strbeg)));
+ }
+ b2 = (NEXTCHR_IS_EOS)
+ ? isWORDCHAR_LC('\n')
+ : isWORDCHAR_LC_utf8((U8*)locinput);
+ }
+ else { /* Here the string isn't utf8 */
+ b1 = (locinput == reginfo->strbeg)
+ ? isWORDCHAR_LC('\n')
+ : isWORDCHAR_LC(UCHARAT(locinput - 1));
+ b2 = (NEXTCHR_IS_EOS)
+ ? isWORDCHAR_LC('\n')
+ : isWORDCHAR_LC(nextchr);
+ }
+ if (to_complement ^ (b1 == b2)) {
+ sayNO;
+ }
+ break;
+ }
+
+ case NBOUND: /* /\B/ */
+ to_complement = 1;
/* FALLTHROUGH */
+
case BOUND: /* /\b/ */
- case BOUNDU: /* /\b/u */
+ if (utf8_target) {
+ goto bound_utf8;
+ }
+ goto bound_ascii_match_only;
+
+ case NBOUNDA: /* /\B/a */
+ to_complement = 1;
+ /* FALLTHROUGH */
+
case BOUNDA: /* /\b/a */
- case NBOUND: /* /\B/ */
+ {
+ bool b1, b2;
+
+ bound_ascii_match_only:
+ /* Here the string isn't utf8, or is utf8 and only ascii characters
+ * are to match \w. In the latter case looking at the byte just
+ * prior to the current one may be just the final byte of a
+ * multi-byte character. This is ok. There are two cases:
+ * 1) it is a single byte character, and then the test is doing
+ * just what it's supposed to.
+ * 2) it is a multi-byte character, in which case the final byte is
+ * never mistakable for ASCII, and so the test will say it is
+ * not a word character, which is the correct answer. */
+ b1 = (locinput == reginfo->strbeg)
+ ? isWORDCHAR_A('\n')
+ : isWORDCHAR_A(UCHARAT(locinput - 1));
+ b2 = (NEXTCHR_IS_EOS)
+ ? isWORDCHAR_A('\n')
+ : isWORDCHAR_A(nextchr);
+ if (to_complement ^ (b1 == b2)) {
+ sayNO;
+ }
+ break;
+ }
+
case NBOUNDU: /* /\B/u */
- case NBOUNDA: /* /\B/a */
- /* was last char in word? */
- if (utf8_target
- && FLAGS(scan) != REGEX_ASCII_RESTRICTED_CHARSET
- && FLAGS(scan) != REGEX_ASCII_MORE_RESTRICTED_CHARSET)
- {
- if (locinput == reginfo->strbeg)
- ln = '\n';
- else {
- const U8 * const r =
- reghop3((U8*)locinput, -1, (U8*)(reginfo->strbeg));
+ to_complement = 1;
+ /* FALLTHROUGH */
- ln = utf8n_to_uvchr(r, (U8*) reginfo->strend - r,
- 0, uniflags);
- }
- if (FLAGS(scan) != REGEX_LOCALE_CHARSET) {
- ln = isWORDCHAR_uni(ln);
- if (NEXTCHR_IS_EOS)
- n = 0;
- else {
- LOAD_UTF8_CHARCLASS_ALNUM();
- n = swash_fetch(PL_utf8_swash_ptrs[_CC_WORDCHAR], (U8*)locinput,
- utf8_target);
+ case BOUNDU: /* /\b/u */
+
+ boundu:
+ if (UNLIKELY(reginfo->strbeg >= reginfo->strend)) {
+ match = FALSE;
+ }
+ else if (utf8_target) {
+ bound_utf8:
+ switch((bound_type) FLAGS(scan)) {
+ case TRADITIONAL_BOUND:
+ {
+ bool b1, b2;
+ b1 = (locinput == reginfo->strbeg)
+ ? 0 /* isWORDCHAR_L1('\n') */
+ : isWORDCHAR_utf8(reghop3((U8*)locinput, -1,
+ (U8*)(reginfo->strbeg)));
+ b2 = (NEXTCHR_IS_EOS)
+ ? 0 /* isWORDCHAR_L1('\n') */
+ : isWORDCHAR_utf8((U8*)locinput);
+ match = cBOOL(b1 != b2);
+ break;
}
- }
- else {
- ln = isWORDCHAR_LC_uvchr(ln);
- n = NEXTCHR_IS_EOS ? 0 : isWORDCHAR_LC_utf8((U8*)locinput);
- }
+ case GCB_BOUND:
+ if (locinput == reginfo->strbeg || NEXTCHR_IS_EOS) {
+ match = TRUE; /* GCB always matches at begin and
+ end */
+ }
+ else {
+ /* Find the gcb values of previous and current
+ * chars, then see if is a break point */
+ match = isGCB(getGCB_VAL_UTF8(
+ reghop3((U8*)locinput,
+ -1,
+ (U8*)(reginfo->strbeg)),
+ (U8*) reginfo->strend),
+ getGCB_VAL_UTF8((U8*) locinput,
+ (U8*) reginfo->strend));
+ }
+ 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;
+
+ case SB_BOUND: /* Always matches at begin and end */
+ if (locinput == reginfo->strbeg || NEXTCHR_IS_EOS) {
+ match = TRUE;
+ }
+ else {
+ match = isSB(getSB_VAL_UTF8(
+ reghop3((U8*)locinput,
+ -1,
+ (U8*)(reginfo->strbeg)),
+ (U8*) reginfo->strend),
+ getSB_VAL_UTF8((U8*) locinput,
+ (U8*) reginfo->strend),
+ (U8*) reginfo->strbeg,
+ (U8*) locinput,
+ (U8*) reginfo->strend,
+ utf8_target);
+ }
+ break;
+
+ case WB_BOUND:
+ if (locinput == reginfo->strbeg || NEXTCHR_IS_EOS) {
+ match = TRUE;
+ }
+ else {
+ match = isWB(WB_UNKNOWN,
+ getWB_VAL_UTF8(
+ reghop3((U8*)locinput,
+ -1,
+ (U8*)(reginfo->strbeg)),
+ (U8*) reginfo->strend),
+ getWB_VAL_UTF8((U8*) locinput,
+ (U8*) reginfo->strend),
+ (U8*) reginfo->strbeg,
+ (U8*) locinput,
+ (U8*) reginfo->strend,
+ utf8_target);
+ }
+ break;
+ }
}
- else {
+ else { /* Not utf8 target */
+ switch((bound_type) FLAGS(scan)) {
+ case TRADITIONAL_BOUND:
+ {
+ bool b1, b2;
+ b1 = (locinput == reginfo->strbeg)
+ ? 0 /* isWORDCHAR_L1('\n') */
+ : isWORDCHAR_L1(UCHARAT(locinput - 1));
+ b2 = (NEXTCHR_IS_EOS)
+ ? 0 /* isWORDCHAR_L1('\n') */
+ : isWORDCHAR_L1(nextchr);
+ match = cBOOL(b1 != b2);
+ break;
+ }
- /* Here the string isn't utf8, or is utf8 and only ascii
- * characters are to match \w. In the latter case looking at
- * the byte just prior to the current one may be just the final
- * byte of a multi-byte character. This is ok. There are two
- * cases:
- * 1) it is a single byte character, and then the test is doing
- * just what it's supposed to.
- * 2) it is a multi-byte character, in which case the final
- * byte is never mistakable for ASCII, and so the test
- * will say it is not a word character, which is the
- * correct answer. */
- ln = (locinput != reginfo->strbeg) ?
- UCHARAT(locinput - 1) : '\n';
- switch (FLAGS(scan)) {
- case REGEX_UNICODE_CHARSET:
- ln = isWORDCHAR_L1(ln);
- n = NEXTCHR_IS_EOS ? 0 : isWORDCHAR_L1(nextchr);
- break;
- case REGEX_LOCALE_CHARSET:
- ln = isWORDCHAR_LC(ln);
- n = NEXTCHR_IS_EOS ? 0 : isWORDCHAR_LC(nextchr);
- break;
- case REGEX_DEPENDS_CHARSET:
- ln = isWORDCHAR(ln);
- n = NEXTCHR_IS_EOS ? 0 : isWORDCHAR(nextchr);
- break;
- case REGEX_ASCII_RESTRICTED_CHARSET:
- case REGEX_ASCII_MORE_RESTRICTED_CHARSET:
- ln = isWORDCHAR_A(ln);
- n = NEXTCHR_IS_EOS ? 0 : isWORDCHAR_A(nextchr);
- break;
- default:
- Perl_croak(aTHX_ "panic: Unexpected FLAGS %u in op %u", FLAGS(scan), OP(scan));
- }
+ case GCB_BOUND:
+ if (locinput == reginfo->strbeg || NEXTCHR_IS_EOS) {
+ match = TRUE; /* GCB always matches at begin and
+ end */
+ }
+ else { /* Only CR-LF combo isn't a GCB in 0-255
+ range */
+ match = UCHARAT(locinput - 1) != '\r'
+ || UCHARAT(locinput) != '\n';
+ }
+ 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;
+ }
+ else {
+ match = isSB(getSB_VAL_CP(UCHARAT(locinput -1)),
+ getSB_VAL_CP(UCHARAT(locinput)),
+ (U8*) reginfo->strbeg,
+ (U8*) locinput,
+ (U8*) reginfo->strend,
+ utf8_target);
+ }
+ break;
+
+ case WB_BOUND:
+ if (locinput == reginfo->strbeg || NEXTCHR_IS_EOS) {
+ match = TRUE;
+ }
+ else {
+ match = isWB(WB_UNKNOWN,
+ getWB_VAL_CP(UCHARAT(locinput -1)),
+ getWB_VAL_CP(UCHARAT(locinput)),
+ (U8*) reginfo->strbeg,
+ (U8*) locinput,
+ (U8*) reginfo->strend,
+ utf8_target);
+ }
+ break;
+ }
}
- /* Note requires that all BOUNDs be lower than all NBOUNDs in
- * regcomp.sym */
- if (((!ln) == (!n)) == (OP(scan) < NBOUND))
- sayNO;
+
+ if (to_complement ^ ! match) {
+ sayNO;
+ }
break;
case ANYOFL: /* /[abc]/l */
_CHECK_AND_WARN_PROBLEMATIC_LOCALE;
+
+ if (ANYOFL_UTF8_LOCALE_REQD(FLAGS(scan)) && ! IN_UTF8_CTYPE_LOCALE)
+ {
+ Perl_ck_warner(aTHX_ packWARN(WARN_LOCALE), utf8_locale_required);
+ }
/* FALLTHROUGH */
+ case ANYOFD: /* /[abc]/d */
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;
}
else if (UTF8_IS_DOWNGRADEABLE_START(nextchr)) {
if (! (to_complement ^ cBOOL(isFOO_lc(FLAGS(scan),
- (U8) TWO_BYTE_UTF8_TO_NATIVE(nextchr,
- *(locinput + 1))))))
+ EIGHT_BIT_UTF8_TO_NATIVE(nextchr,
+ *(locinput + 1))))))
{
sayNO;
}
}
else { /* Here, must be an above Latin-1 code point */
- goto utf8_posix_not_eos;
+ _CHECK_AND_OUTPUT_WIDE_LOCALE_UTF8_MSG(locinput, reginfo->strend);
+ goto utf8_posix_above_latin1;
}
/* Here, must be utf8 */
if (NEXTCHR_IS_EOS) {
sayNO;
}
- utf8_posix_not_eos:
/* Use _generic_isCC() for characters within Latin1. (Note that
* UTF8_IS_INVARIANT works even on non-UTF-8 strings, or else
}
else if (UTF8_IS_DOWNGRADEABLE_START(nextchr)) {
if (! (to_complement
- ^ cBOOL(_generic_isCC(TWO_BYTE_UTF8_TO_NATIVE(nextchr,
+ ^ cBOOL(_generic_isCC(EIGHT_BIT_UTF8_TO_NATIVE(nextchr,
*(locinput + 1)),
FLAGS(scan)))))
{
locinput += 2;
}
else { /* Handle above Latin-1 code points */
+ utf8_posix_above_latin1:
classnum = (_char_class_number) FLAGS(scan);
if (classnum < _FIRST_NON_SWASH_CC) {
}
else { /* Here, uses macros to find above Latin-1 code points */
switch (classnum) {
- case _CC_ENUM_SPACE: /* XXX would require separate
- code if we revert the change
- of \v matching this */
- case _CC_ENUM_PSXSPC:
+ case _CC_ENUM_SPACE:
if (! (to_complement
^ cBOOL(is_XPERLSPACE_high(locinput))))
{
case CLUMP: /* Match \X: logical Unicode character. This is defined as
a Unicode extended Grapheme Cluster */
- /* From http://www.unicode.org/reports/tr29 (5.2 version). An
- extended Grapheme Cluster is:
-
- CR LF
- | Prepend* Begin Extend*
- | .
-
- Begin is: ( Special_Begin | ! Control )
- Special_Begin is: ( Regional-Indicator+ | Hangul-syllable )
- Extend is: ( Grapheme_Extend | Spacing_Mark )
- Control is: [ GCB_Control | CR | LF ]
- Hangul-syllable is: ( T+ | ( L* ( L | ( LVT | ( V | LV ) V* ) T* ) ))
-
- If we create a 'Regular_Begin' = Begin - Special_Begin, then
- we can rewrite
-
- Begin is ( Regular_Begin + Special Begin )
-
- It turns out that 98.4% of all Unicode code points match
- Regular_Begin. Doing it this way eliminates a table match in
- the previous implementation for almost all Unicode code points.
-
- There is a subtlety with Prepend* which showed up in testing.
- Note that the Begin, and only the Begin is required in:
- | Prepend* Begin Extend*
- Also, Begin contains '! Control'. A Prepend must be a
- '! Control', which means it must also be a Begin. What it
- comes down to is that if we match Prepend* and then find no
- suitable Begin afterwards, that if we backtrack the last
- Prepend, that one will be a suitable Begin.
- */
-
if (NEXTCHR_IS_EOS)
sayNO;
if (! utf8_target) {
}
else {
- /* Utf8: See if is ( CR LF ); already know that locinput <
- * reginfo->strend, so locinput+1 is in bounds */
- if ( nextchr == '\r' && locinput+1 < reginfo->strend
- && UCHARAT(locinput + 1) == '\n')
- {
- locinput += 2;
- }
- else {
- STRLEN len;
-
- /* In case have to backtrack to beginning, then match '.' */
- char *starting = locinput;
-
- /* In case have to backtrack the last prepend */
- char *previous_prepend = NULL;
-
- LOAD_UTF8_CHARCLASS_GCB();
-
- /* Match (prepend)* */
- while (locinput < reginfo->strend
- && (len = is_GCB_Prepend_utf8(locinput)))
- {
- previous_prepend = locinput;
- locinput += len;
- }
-
- /* As noted above, if we matched a prepend character, but
- * the next thing won't match, back off the last prepend we
- * matched, as it is guaranteed to match the begin */
- if (previous_prepend
- && (locinput >= reginfo->strend
- || (! swash_fetch(PL_utf8_X_regular_begin,
- (U8*)locinput, utf8_target)
- && ! is_GCB_SPECIAL_BEGIN_START_utf8(locinput)))
- )
- {
- locinput = previous_prepend;
- }
+ /* Get the gcb type for the current character */
+ GCB_enum prev_gcb = getGCB_VAL_UTF8((U8*) locinput,
+ (U8*) reginfo->strend);
- /* Note that here we know reginfo->strend > locinput, as we
- * tested that upon input to this switch case, and if we
- * moved locinput forward, we tested the result just above
- * and it either passed, or we backed off so that it will
- * now pass */
- if (swash_fetch(PL_utf8_X_regular_begin,
- (U8*)locinput, utf8_target)) {
- locinput += UTF8SKIP(locinput);
+ /* Then scan through the input until we get to the first
+ * character whose type is supposed to be a gcb with the
+ * current character. (There is always a break at the
+ * end-of-input) */
+ locinput += UTF8SKIP(locinput);
+ while (locinput < reginfo->strend) {
+ GCB_enum cur_gcb = getGCB_VAL_UTF8((U8*) locinput,
+ (U8*) reginfo->strend);
+ if (isGCB(prev_gcb, cur_gcb)) {
+ break;
}
- else if (! is_GCB_SPECIAL_BEGIN_START_utf8(locinput)) {
-
- /* Here did not match the required 'Begin' in the
- * second term. So just match the very first
- * character, the '.' of the final term of the regex */
- locinput = starting + UTF8SKIP(starting);
- goto exit_utf8;
- } else {
-
- /* Here is a special begin. It can be composed of
- * several individual characters. One possibility is
- * RI+ */
- if ((len = is_GCB_RI_utf8(locinput))) {
- locinput += len;
- while (locinput < reginfo->strend
- && (len = is_GCB_RI_utf8(locinput)))
- {
- locinput += len;
- }
- } else if ((len = is_GCB_T_utf8(locinput))) {
- /* Another possibility is T+ */
- locinput += len;
- while (locinput < reginfo->strend
- && (len = is_GCB_T_utf8(locinput)))
- {
- locinput += len;
- }
- } else {
-
- /* Here, neither RI+ nor T+; must be some other
- * Hangul. That means it is one of the others: L,
- * LV, LVT or V, and matches:
- * L* (L | LVT T* | V * V* T* | LV V* T*) */
-
- /* Match L* */
- while (locinput < reginfo->strend
- && (len = is_GCB_L_utf8(locinput)))
- {
- locinput += len;
- }
- /* Here, have exhausted L*. If the next character
- * is not an LV, LVT nor V, it means we had to have
- * at least one L, so matches L+ in the original
- * equation, we have a complete hangul syllable.
- * Are done. */
-
- if (locinput < reginfo->strend
- && is_GCB_LV_LVT_V_utf8(locinput))
- {
- /* Otherwise keep going. Must be LV, LVT or V.
- * See if LVT, by first ruling out V, then LV */
- if (! is_GCB_V_utf8(locinput)
- /* All but every TCount one is LV */
- && (valid_utf8_to_uvchr((U8 *) locinput,
- NULL)
- - SBASE)
- % TCount != 0)
- {
- locinput += UTF8SKIP(locinput);
- } else {
-
- /* Must be V or LV. Take it, then match
- * V* */
- locinput += UTF8SKIP(locinput);
- while (locinput < reginfo->strend
- && (len = is_GCB_V_utf8(locinput)))
- {
- locinput += len;
- }
- }
+ prev_gcb = cur_gcb;
+ locinput += UTF8SKIP(locinput);
+ }
- /* And any of LV, LVT, or V can be followed
- * by T* */
- while (locinput < reginfo->strend
- && (len = is_GCB_T_utf8(locinput)))
- {
- locinput += len;
- }
- }
- }
- }
- /* Match any extender */
- while (locinput < reginfo->strend
- && swash_fetch(PL_utf8_X_extend,
- (U8*)locinput, utf8_target))
- {
- locinput += UTF8SKIP(locinput);
- }
- }
- exit_utf8:
- if (locinput > reginfo->strend) sayNO;
}
break;
U8 flags = (CXp_SUB_RE |
((newcv == caller_cv) ? CXp_SUB_RE_FAKE : 0));
if (last_pushed_cv) {
+ /* PUSH/POP_MULTICALL save and restore the
+ * caller's PL_comppad; if we call multiple subs
+ * using the same CX block, we have to save and
+ * unwind the varying PL_comppad's ourselves,
+ * especially restoring the right PL_comppad on
+ * backtrack - so save it on the save stack */
+ SAVECOMPPAD();
CHANGE_MULTICALL_FLAGS(newcv, flags);
}
else {
assert(!(scan->flags & ~RXf_PMf_COMPILETIME));
re_sv = rex->engine->op_comp(aTHX_ &ret, 1, NULL,
rex->engine, NULL, NULL,
- /* copy /msix etc to inner pattern */
+ /* copy /msixn etc to inner pattern */
ARG2L(scan),
pm_flags);
maxopenparen = 0;
/* run the pattern returned from (??{...}) */
- eval_recurse_doit: /* Share code with GOSUB below this line
+ eval_recurse_doit: /* Share code with GOSUB below this line
* At this point we expect the stack context to be
* set up correctly */
/* now continue from first node in postoned RE */
PUSH_YES_STATE_GOTO(EVAL_AB, startpoint, locinput);
/* NOTREACHED */
- NOT_REACHED;
+ NOT_REACHED; /* NOTREACHED */
}
case EVAL_AB: /* cleanup after a successful (??{A})B */
break;
case ACCEPT: /* (*ACCEPT) */
- if (ARG(scan)){
+ if (scan->flags)
+ sv_yes_mark = MUTABLE_SV(rexi->data->data[ ARG( scan ) ]);
+ if (ARG2L(scan)){
regnode *cursor;
for (cursor=scan;
cursor && OP(cursor)!=END;
PUSH_YES_STATE_GOTO(CURLYX_end, PREVOPER(next), locinput);
/* NOTREACHED */
- NOT_REACHED;
+ NOT_REACHED; /* NOTREACHED */
}
case CURLYX_end: /* just finished matching all of A*B */
cur_curlyx = ST.prev_curlyx;
sayYES;
/* NOTREACHED */
- NOT_REACHED;
+ 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;
+ NOT_REACHED; /* NOTREACHED */
#undef ST
PUSH_STATE_GOTO(WHILEM_A_pre, A, locinput);
/* NOTREACHED */
- NOT_REACHED;
+ NOT_REACHED; /* NOTREACHED */
}
/* If degenerate A matches "", assume A done. */
PUSH_YES_STATE_GOTO(WHILEM_B_min, ST.save_curlyx->u.curlyx.B,
locinput);
/* NOTREACHED */
- NOT_REACHED;
+ NOT_REACHED; /* NOTREACHED */
}
/* Prefer A over B for maximal matching. */
REGCP_SET(ST.lastcp);
PUSH_STATE_GOTO(WHILEM_A_max, A, locinput);
/* NOTREACHED */
- NOT_REACHED;
+ NOT_REACHED; /* NOTREACHED */
}
goto do_whilem_B_max;
}
/* NOTREACHED */
- NOT_REACHED;
+ 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;
+ NOT_REACHED; /* NOTREACHED */
case WHILEM_B_max_fail: /* just failed to match B in a maximal match */
cur_curlyx = ST.save_curlyx;
cur_curlyx->u.curlyx.count--;
CACHEsayNO;
/* NOTREACHED */
- NOT_REACHED;
+ NOT_REACHED; /* NOTREACHED */
case WHILEM_A_min_fail: /* just failed to match A in a minimal match */
/* FALLTHROUGH */
cur_curlyx->u.curlyx.count--;
CACHEsayNO;
/* NOTREACHED */
- NOT_REACHED;
+ NOT_REACHED; /* NOTREACHED */
case WHILEM_A_max_fail: /* just failed to match A in a maximal match */
REGCP_UNWIND(ST.lastcp);
PUSH_YES_STATE_GOTO(WHILEM_B_max, ST.save_curlyx->u.curlyx.B,
locinput);
/* NOTREACHED */
- NOT_REACHED;
+ NOT_REACHED; /* NOTREACHED */
case WHILEM_B_min_fail: /* just failed to match B in a minimal match */
cur_curlyx = ST.save_curlyx;
/*A*/ NEXTOPER(ST.save_curlyx->u.curlyx.me) + EXTRA_STEP_2ARGS,
locinput);
/* NOTREACHED */
- NOT_REACHED;
+ NOT_REACHED; /* NOTREACHED */
#undef ST
#define ST st->u.branch
PUSH_STATE_GOTO(BRANCH_next, scan, locinput);
}
/* NOTREACHED */
- NOT_REACHED;
+ NOT_REACHED; /* NOTREACHED */
case CUTGROUP: /* /(*THEN)/ */
- sv_yes_mark = st->u.mark.mark_name = scan->flags ? NULL :
- MUTABLE_SV(rexi->data->data[ ARG( scan ) ]);
+ sv_yes_mark = st->u.mark.mark_name = scan->flags
+ ? MUTABLE_SV(rexi->data->data[ ARG( scan ) ])
+ : NULL;
PUSH_STATE_GOTO(CUTGROUP_next, next, locinput);
/* NOTREACHED */
- NOT_REACHED;
+ NOT_REACHED; /* NOTREACHED */
case CUTGROUP_next_fail:
do_cutgroup = 1;
sv_commit = st->u.mark.mark_name;
sayNO;
/* NOTREACHED */
- NOT_REACHED;
+ NOT_REACHED; /* NOTREACHED */
case BRANCH_next:
sayYES;
/* NOTREACHED */
- NOT_REACHED;
+ NOT_REACHED; /* NOTREACHED */
case BRANCH_next_fail: /* that branch failed; try the next, if any */
if (do_cutgroup) {
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;
+ NOT_REACHED; /* NOTREACHED */
case CURLYM_A: /* we've just matched an A */
ST.count++;
PUSH_STATE_GOTO(CURLYM_B, ST.B, locinput); /* match B */
/* NOTREACHED */
- NOT_REACHED;
+ NOT_REACHED; /* NOTREACHED */
case CURLYM_B_fail: /* just failed to match a B */
REGCP_UNWIND(ST.cp);
goto curly_try_B_max;
}
/* NOTREACHED */
- NOT_REACHED;
+ NOT_REACHED; /* NOTREACHED */
case CURLY_B_min_known_fail:
/* failed to find B in a non-greedy match where c1,c2 valid */
PUSH_STATE_GOTO(CURLY_B_min_known, ST.B, locinput);
}
/* NOTREACHED */
- NOT_REACHED;
+ NOT_REACHED; /* NOTREACHED */
case CURLY_B_min_fail:
/* failed to find B in a non-greedy match where c1,c2 invalid */
}
sayNO;
/* NOTREACHED */
- NOT_REACHED;
+ NOT_REACHED; /* NOTREACHED */
- curly_try_B_max:
+ 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) {
CURLY_SETPAREN(ST.paren, ST.count);
PUSH_STATE_GOTO(CURLY_B_max, ST.B, locinput);
/* NOTREACHED */
- NOT_REACHED;
+ NOT_REACHED; /* NOTREACHED */
}
}
/* FALLTHROUGH */
#undef ST
case END: /* last op of main pattern */
- fake_end:
+ fake_end:
if (cur_eval) {
/* we've just finished A in /(??{A})B/; now continue with B */
/* execute body of (?...A) */
PUSH_YES_STATE_GOTO(IFMATCH_A, NEXTOPER(NEXTOPER(scan)), newstart);
/* NOTREACHED */
- NOT_REACHED;
+ NOT_REACHED; /* NOTREACHED */
}
case IFMATCH_A_fail: /* body of (?...A) failed */
/* FALLTHROUGH */
case PRUNE: /* (*PRUNE) */
- if (!scan->flags)
+ 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;
+ NOT_REACHED; /* NOTREACHED */
case COMMIT_next_fail:
no_final = 1;
/* FALLTHROUGH */
+ sayNO;
+ NOT_REACHED; /* NOTREACHED */
case OPFAIL: /* (*FAIL) */
- sayNO;
+ if (scan->flags)
+ sv_commit = MUTABLE_SV(rexi->data->data[ ARG( scan ) ]);
+ if (logical) {
+ /* deal with (?(?!)X|Y) properly,
+ * make sure we trigger the no branch
+ * of the trailing IFTHEN structure*/
+ sw= 0;
+ break;
+ } else {
+ sayNO;
+ }
/* NOTREACHED */
- NOT_REACHED;
+ NOT_REACHED; /* NOTREACHED */
#define ST st->u.mark
case MARKPOINT: /* (*MARK:foo) */
ST.mark_loc = locinput;
PUSH_YES_STATE_GOTO(MARKPOINT_next, next, locinput);
/* NOTREACHED */
- NOT_REACHED;
+ NOT_REACHED; /* NOTREACHED */
case MARKPOINT_next:
mark_state = ST.prev_mark;
sayYES;
/* NOTREACHED */
- NOT_REACHED;
+ NOT_REACHED; /* NOTREACHED */
case MARKPOINT_next_fail:
if (popmark && sv_eq(ST.mark_name,popmark))
mark_state->u.mark.mark_name : NULL;
sayNO;
/* NOTREACHED */
- NOT_REACHED;
+ NOT_REACHED; /* NOTREACHED */
case SKIP: /* (*SKIP) */
- if (scan->flags) {
+ if (!scan->flags) {
/* (*SKIP) : if we fail we cut here*/
ST.mark_name = NULL;
ST.mark_loc = locinput;
no_final = 1;
sayNO;
/* NOTREACHED */
- NOT_REACHED;
+ NOT_REACHED; /* NOTREACHED */
#undef ST
case LNBREAK: /* \R */
/* this is a point to jump to in order to increment
* locinput by one character */
- increment_locinput:
+ increment_locinput:
assert(!NEXTCHR_IS_EOS);
if (utf8_target) {
locinput += PL_utf8skip[nextchr];
Perl_croak(aTHX_ "corrupted regexp pointers");
/* NOTREACHED */
sayNO;
- NOT_REACHED;
+ NOT_REACHED; /* NOTREACHED */
-yes:
+ yes:
if (yes_state) {
/* we have successfully completed a subexpression, but we must now
* pop to the state marked by yes_state and continue from there */
result = 1;
goto final_exit;
-no:
+ no:
DEBUG_EXECUTE_r(
PerlIO_printf(Perl_debug_log,
"%*s %sfailed...%s\n",
PL_colors[4], PL_colors[5])
);
-no_silent:
+ no_silent:
if (no_final) {
if (yes_state) {
goto yes;
char *loceol = reginfo->strend; /* local version */
I32 hardcount = 0; /* How many matches so far */
bool utf8_target = reginfo->is_utf8_target;
- int to_complement = 0; /* Invert the result? */
+ unsigned int to_complement = 0; /* Invert the result? */
UV utf8_flags;
_char_class_number classnum;
#ifndef DEBUGGING
else
scan = loceol;
break;
- case CANY: /* Move <scan> forward <max> bytes, unless goes off end */
- if (utf8_target && loceol - scan > max) {
-
- /* <loceol> hadn't been adjusted in the UTF-8 case */
- scan += max;
- }
- else {
- scan = loceol;
- }
- break;
case EXACTL:
_CHECK_AND_WARN_PROBLEMATIC_LOCALE;
+ if (utf8_target && UTF8_IS_ABOVE_LATIN1(*scan)) {
+ _CHECK_AND_OUTPUT_WIDE_LOCALE_UTF8_MSG(scan, loceol);
+ }
/* FALLTHROUGH */
case EXACT:
assert(STR_LEN(p) == reginfo->is_utf8_pat ? UTF8SKIP(STRING(p)) : 1);
/* Target isn't utf8; convert the character in the UTF-8
* pattern to non-UTF8, and do a simple loop */
- c = TWO_BYTE_UTF8_TO_NATIVE(c, *(STRING(p) + 1));
+ c = EIGHT_BIT_UTF8_TO_NATIVE(c, *(STRING(p) + 1));
while (scan < loceol && UCHARAT(scan) == c) {
scan++;
}
if (! utf8_target) {
break;
}
- utf8_flags = FOLDEQ_S2_ALREADY_FOLDED;
+ utf8_flags = FOLDEQ_LOCALE | FOLDEQ_S2_ALREADY_FOLDED
+ | FOLDEQ_S2_FOLDS_SANE;
goto do_exactf;
case EXACTFU_SS:
case EXACTFU:
utf8_flags = reginfo->is_utf8_pat ? FOLDEQ_S2_ALREADY_FOLDED : 0;
- do_exactf: {
+ do_exactf: {
int c1, c2;
U8 c1_utf8[UTF8_MAXBYTES+1], c2_utf8[UTF8_MAXBYTES+1];
}
case ANYOFL:
_CHECK_AND_WARN_PROBLEMATIC_LOCALE;
+
+ if (ANYOFL_UTF8_LOCALE_REQD(FLAGS(p)) && ! IN_UTF8_CTYPE_LOCALE) {
+ Perl_ck_warner(aTHX_ packWARN(WARN_LOCALE), utf8_locale_required);
+ }
/* FALLTHROUGH */
+ case ANYOFD:
case ANYOF:
if (utf8_target) {
while (hardcount < max
}
}
else {
- utf8_posix:
+ utf8_posix:
classnum = (_char_class_number) FLAGS(p);
if (classnum < _FIRST_NON_SWASH_CC) {
}
else if (UTF8_IS_DOWNGRADEABLE_START(*scan)) {
if (! (to_complement
- ^ cBOOL(_generic_isCC(TWO_BYTE_UTF8_TO_NATIVE(*scan,
+ ^ cBOOL(_generic_isCC(EIGHT_BIT_UTF8_TO_NATIVE(*scan,
*(scan + 1)),
classnum))))
{
* code is written for making the loops as tight as possible.
* It could be refactored to save space instead */
switch (classnum) {
- case _CC_ENUM_SPACE: /* XXX would require separate code
- if we revert the change of \v
- matching this */
- /* FALLTHROUGH */
- case _CC_ENUM_PSXSPC:
+ case _CC_ENUM_SPACE:
while (hardcount < max
&& scan < loceol
&& (to_complement ^ cBOOL(isSPACE_utf8(scan))))
default:
Perl_croak(aTHX_ "panic: regrepeat() called with unrecognized node type %d='%s'", OP(p), PL_reg_name[OP(p)]);
/* NOTREACHED */
- NOT_REACHED;
+ NOT_REACHED; /* NOTREACHED */
}
* UTF8_ALLOW_FFFF */
if (c_len == (STRLEN)-1)
Perl_croak(aTHX_ "Malformed UTF-8 character (fatal)");
+ if (c > 255 && OP(n) == ANYOFL && ! ANYOFL_UTF8_LOCALE_REQD(flags)) {
+ _CHECK_AND_OUTPUT_WIDE_LOCALE_CP_MSG(c);
+ }
}
/* If this character is potentially in the bitmap, check it */
if (c < NUM_ANYOF_CODE_POINTS) {
if (ANYOF_BITMAP_TEST(n, c))
match = TRUE;
- else if ((flags & ANYOF_MATCHES_ALL_NON_UTF8_NON_ASCII)
+ else if ((flags
+ & ANYOF_SHARED_d_MATCHES_ALL_NON_UTF8_NON_ASCII_non_d_WARN_SUPER)
+ && OP(n) == ANYOFD
&& ! utf8_target
&& ! isASCII(c))
{
match = TRUE;
}
else if (flags & ANYOF_LOCALE_FLAGS) {
- if ((flags & ANYOF_LOC_FOLD)
+ if ((flags & ANYOFL_FOLD)
&& c < 256
&& ANYOF_BITMAP_TEST(n, PL_fold_locale[c]))
{
{
match = TRUE; /* Everything above the bitmap matches */
}
- else if ((flags & ANYOF_HAS_NONBITMAP_NON_UTF8_MATCHES)
- || (utf8_target && (flags & ANYOF_HAS_UTF8_NONBITMAP_MATCHES))
- || ((flags & ANYOF_LOC_FOLD)
- && IN_UTF8_CTYPE_LOCALE
- && ARG(n) != ANYOF_ONLY_HAS_BITMAP))
+ /* Here doesn't match everything above the bitmap. If there is
+ * some information available beyond the bitmap, we may find a
+ * match in it. If so, this is most likely because the code point
+ * is outside the bitmap range. But rarely, it could be because of
+ * some other reason. If so, various flags are set to indicate
+ * this possibility. On ANYOFD nodes, there may be matches that
+ * happen only when the target string is UTF-8; or for other node
+ * types, because runtime lookup is needed, regardless of the
+ * UTF-8ness of the target string. Finally, under /il, there may
+ * be some matches only possible if the locale is a UTF-8 one. */
+ else if ( ARG(n) != ANYOF_ONLY_HAS_BITMAP
+ && ( c >= NUM_ANYOF_CODE_POINTS
+ || ( (flags & ANYOF_SHARED_d_UPPER_LATIN1_UTF8_STRING_MATCHES_non_d_RUNTIME_USER_PROP)
+ && ( UNLIKELY(OP(n) != ANYOFD)
+ || (utf8_target && ! isASCII_uni(c)
+# if NUM_ANYOF_CODE_POINTS > 256
+ && c < 256
+# endif
+ )))
+ || ( 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,
}
if (UNICODE_IS_SUPER(c)
- && (flags & ANYOF_WARN_SUPER)
+ && (flags
+ & ANYOF_SHARED_d_MATCHES_ALL_NON_UTF8_NON_ASCII_non_d_WARN_SUPER)
+ && OP(n) != ANYOFD
&& ckWARN_d(WARN_NON_UNICODE))
{
Perl_warner(aTHX_ packWARN(WARN_NON_UNICODE),
if (UTF8_IS_CONTINUED(*s)) {
while (s > lim && UTF8_IS_CONTINUATION(*s))
s--;
+ if (! UTF8_IS_START(*s)) {
+ Perl_croak_nocontext("Malformed UTF-8 character (fatal)");
+ }
}
/* XXX could check well-formedness here */
}
if (UTF8_IS_CONTINUED(*s)) {
while (s > llim && UTF8_IS_CONTINUATION(*s))
s--;
+ if (! UTF8_IS_START(*s)) {
+ Perl_croak_nocontext("Malformed UTF-8 character (fatal)");
+ }
}
/* XXX could check well-formedness here */
}
if (UTF8_IS_CONTINUED(*s)) {
while (s > lim && UTF8_IS_CONTINUATION(*s))
s--;
+ if (! UTF8_IS_START(*s)) {
+ Perl_croak_nocontext("Malformed UTF-8 character (fatal)");
+ }
}
/* XXX could check well-formedness here */
}
}
/*
- * Local variables:
- * c-indentation-style: bsd
- * c-basic-offset: 4
- * indent-tabs-mode: nil
- * End:
- *
* ex: set ts=8 sts=4 sw=4 et:
*/
https://perl5.git.perl.org / perl5.git / blobdiff