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Diffstat (limited to 'regexec.c')
-rw-r--r--regexec.c157
1 files changed, 124 insertions, 33 deletions
diff --git a/regexec.c b/regexec.c
index b27884b32c..9e5f559731 100644
--- a/regexec.c
+++ b/regexec.c
@@ -403,6 +403,8 @@ onig_region_copy(OnigRegion* to, const OnigRegion* from)
#define STK_CALL_FRAME 0x0800
#define STK_RETURN 0x0900
#define STK_VOID 0x0a00 /* for fill a blank */
+#define STK_ABSENT_POS 0x0b00 /* for absent */
+#define STK_ABSENT 0x0c00 /* absent inner loop marker */
/* stack type check mask */
#define STK_MASK_POP_USED 0x00ff
@@ -673,7 +675,8 @@ stack_double(OnigStackType** arg_stk_base, OnigStackType** arg_stk_end,
#define STACK_PUSH_ALT(pat,s,sprev,keep) STACK_PUSH(STK_ALT,pat,s,sprev,keep)
#define STACK_PUSH_POS(s,sprev,keep) STACK_PUSH(STK_POS,NULL_UCHARP,s,sprev,keep)
#define STACK_PUSH_POS_NOT(pat,s,sprev,keep) STACK_PUSH(STK_POS_NOT,pat,s,sprev,keep)
-#define STACK_PUSH_STOP_BT STACK_PUSH_TYPE(STK_STOP_BT)
+#define STACK_PUSH_ABSENT STACK_PUSH_TYPE(STK_ABSENT)
+#define STACK_PUSH_STOP_BT STACK_PUSH_TYPE(STK_STOP_BT)
#define STACK_PUSH_LOOK_BEHIND_NOT(pat,s,sprev,keep) \
STACK_PUSH(STK_LOOK_BEHIND_NOT,pat,s,sprev,keep)
@@ -785,6 +788,14 @@ stack_double(OnigStackType** arg_stk_base, OnigStackType** arg_stk_end,
STACK_INC;\
} while(0)
+#define STACK_PUSH_ABSENT_POS(start, end) do {\
+ STACK_ENSURE(1);\
+ stk->type = STK_ABSENT_POS;\
+ stk->u.absent_pos.abs_pstr = (start);\
+ stk->u.absent_pos.end_pstr = (end);\
+ STACK_INC;\
+} while(0)
+
#ifdef ONIG_DEBUG
# define STACK_BASE_CHECK(p, at) \
@@ -885,6 +896,33 @@ stack_double(OnigStackType** arg_stk_base, OnigStackType** arg_stk_end,
}\
} while(0)
+#define STACK_POP_TIL_ABSENT do {\
+ while (1) {\
+ stk--;\
+ STACK_BASE_CHECK(stk, "STACK_POP_TIL_ABSENT"); \
+ if (stk->type == STK_ABSENT) break;\
+ else if (stk->type == STK_MEM_START) {\
+ mem_start_stk[stk->u.mem.num] = stk->u.mem.start;\
+ mem_end_stk[stk->u.mem.num] = stk->u.mem.end;\
+ }\
+ else if (stk->type == STK_REPEAT_INC) {\
+ STACK_AT(stk->u.repeat_inc.si)->u.repeat.count--;\
+ }\
+ else if (stk->type == STK_MEM_END) {\
+ mem_start_stk[stk->u.mem.num] = stk->u.mem.start;\
+ mem_end_stk[stk->u.mem.num] = stk->u.mem.end;\
+ }\
+ ELSE_IF_STATE_CHECK_MARK(stk);\
+ }\
+} while(0)
+
+#define STACK_POP_ABSENT_POS(start, end) do {\
+ stk--;\
+ STACK_BASE_CHECK(stk, "STACK_POP_ABSENT_POS"); \
+ (start) = stk->u.absent_pos.abs_pstr;\
+ (end) = stk->u.absent_pos.end_pstr;\
+} while(0)
+
#define STACK_POS_END(k) do {\
k = stk;\
while (1) {\
@@ -1136,10 +1174,12 @@ static int string_cmp_ic(OnigEncoding enc, int case_fold_flag,
# define DATA_ENSURE_CHECK1 (s < right_range)
# define DATA_ENSURE_CHECK(n) (s + (n) <= right_range)
# define DATA_ENSURE(n) if (s + (n) > right_range) goto fail
+# define ABSENT_END_POS right_range
#else
# define DATA_ENSURE_CHECK1 (s < end)
# define DATA_ENSURE_CHECK(n) (s + (n) <= end)
# define DATA_ENSURE(n) if (s + (n) > end) goto fail
+# define ABSENT_END_POS end
#endif /* USE_MATCH_RANGE_MUST_BE_INSIDE_OF_SPECIFIED_RANGE */
@@ -1372,6 +1412,8 @@ stack_type_str(int stack_type)
case STK_CALL_FRAME: return "Call ";
case STK_RETURN: return "Ret ";
case STK_VOID: return "Void ";
+ case STK_ABSENT_POS: return "AbsPos";
+ case STK_ABSENT: return "Absent";
default: return " ";
}
}
@@ -1484,7 +1526,6 @@ match_at(regex_t* reg, const UChar* str, const UChar* end,
&&L_OP_END_LINE,
&&L_OP_SEMI_END_BUF,
&&L_OP_BEGIN_POSITION,
- &&L_OP_BEGIN_POS_OR_LINE, /* used for implicit anchor optimization */
&&L_OP_BACKREF1,
&&L_OP_BACKREF2,
@@ -1552,6 +1593,9 @@ match_at(regex_t* reg, const UChar* str, const UChar* end,
&&L_OP_LOOK_BEHIND, /* (?<=...) start (no needs end opcode) */
&&L_OP_PUSH_LOOK_BEHIND_NOT, /* (?<!...) start */
&&L_OP_FAIL_LOOK_BEHIND_NOT, /* (?<!...) end */
+ &&L_OP_PUSH_ABSENT_POS, /* (?~...) start */
+ &&L_OP_ABSENT, /* (?~...) start of inner loop */
+ &&L_OP_ABSENT_END, /* (?~...) end */
# ifdef USE_SUBEXP_CALL
&&L_OP_CALL, /* \g<name> */
@@ -1636,8 +1680,8 @@ match_at(regex_t* reg, const UChar* str, const UChar* end,
#endif
#ifdef ONIG_DEBUG_MATCH
- fprintf(stderr, "match_at: str: %"PRIdPTR" (%p), end: %"PRIdPTR" (%p), start: %"PRIdPTR" (%p), sprev: %"PRIdPTR" (%p)\n",
- (intptr_t )str, str, (intptr_t )end, end, (intptr_t )sstart, sstart, (intptr_t )sprev, sprev);
+ fprintf(stderr, "match_at: str: %"PRIuPTR" (%p), end: %"PRIuPTR" (%p), start: %"PRIuPTR" (%p), sprev: %"PRIuPTR" (%p)\n",
+ (uintptr_t )str, str, (uintptr_t )end, end, (uintptr_t )sstart, sstart, (uintptr_t )sprev, sprev);
fprintf(stderr, "size: %d, start offset: %d\n",
(int )(end - str), (int )(sstart - str));
fprintf(stderr, "\n ofs> str stk:type addr:opcode\n");
@@ -2378,7 +2422,6 @@ match_at(regex_t* reg, const UChar* str, const UChar* end,
JUMP;
CASE(OP_BEGIN_LINE) MOP_IN(OP_BEGIN_LINE);
- op_begin_line:
if (ON_STR_BEGIN(s)) {
if (IS_NOTBOL(msa->options)) goto fail;
MOP_OUT;
@@ -2454,13 +2497,6 @@ match_at(regex_t* reg, const UChar* str, const UChar* end,
MOP_OUT;
JUMP;
- CASE(OP_BEGIN_POS_OR_LINE) MOP_IN(OP_BEGIN_POS_OR_LINE);
- if (s != msa->gpos)
- goto op_begin_line;
-
- MOP_OUT;
- JUMP;
-
CASE(OP_MEMORY_START_PUSH) MOP_IN(OP_MEMORY_START_PUSH);
GET_MEMNUM_INC(mem, p);
STACK_PUSH_MEM_START(mem, s);
@@ -2721,8 +2757,8 @@ match_at(regex_t* reg, const UChar* str, const UChar* end,
STACK_NULL_CHECK(isnull, mem, s);
if (isnull) {
#ifdef ONIG_DEBUG_MATCH
- fprintf(stderr, "NULL_CHECK_END: skip id:%d, s:%"PRIdPTR" (%p)\n",
- (int )mem, (intptr_t )s, s);
+ fprintf(stderr, "NULL_CHECK_END: skip id:%d, s:%"PRIuPTR" (%p)\n",
+ (int )mem, (uintptr_t )s, s);
#endif
null_check_found:
/* empty loop founded, skip next instruction */
@@ -2755,8 +2791,8 @@ match_at(regex_t* reg, const UChar* str, const UChar* end,
STACK_NULL_CHECK_MEMST(isnull, mem, s, reg);
if (isnull) {
# ifdef ONIG_DEBUG_MATCH
- fprintf(stderr, "NULL_CHECK_END_MEMST: skip id:%d, s:%"PRIdPTR" (%p)\n",
- (int )mem, (intptr_t )s, s);
+ fprintf(stderr, "NULL_CHECK_END_MEMST: skip id:%d, s:%"PRIuPTR" (%p)\n",
+ (int )mem, (uintptr_t )s, s);
# endif
if (isnull == -1) goto fail;
goto null_check_found;
@@ -2780,8 +2816,8 @@ match_at(regex_t* reg, const UChar* str, const UChar* end,
# endif
if (isnull) {
# ifdef ONIG_DEBUG_MATCH
- fprintf(stderr, "NULL_CHECK_END_MEMST_PUSH: skip id:%d, s:%"PRIdPTR" (%p)\n",
- (int )mem, (intptr_t )s, s);
+ fprintf(stderr, "NULL_CHECK_END_MEMST_PUSH: skip id:%d, s:%"PRIuPTR" (%p)\n",
+ (int )mem, (uintptr_t )s, s);
# endif
if (isnull == -1) goto fail;
goto null_check_found;
@@ -3033,6 +3069,63 @@ match_at(regex_t* reg, const UChar* str, const UChar* end,
goto fail;
NEXT;
+ CASE(OP_PUSH_ABSENT_POS) MOP_IN(OP_PUSH_ABSENT_POS);
+ /* Save the absent-start-pos and the original end-pos. */
+ STACK_PUSH_ABSENT_POS(s, ABSENT_END_POS);
+ MOP_OUT;
+ JUMP;
+
+ CASE(OP_ABSENT) MOP_IN(OP_ABSENT);
+ {
+ const UChar* aend = ABSENT_END_POS;
+ UChar* absent;
+ UChar* selfp = p - 1;
+
+ STACK_POP_ABSENT_POS(absent, ABSENT_END_POS); /* Restore end-pos. */
+ GET_RELADDR_INC(addr, p);
+#ifdef ONIG_DEBUG_MATCH
+ fprintf(stderr, "ABSENT: s:%p, end:%p, absent:%p, aend:%p\n", s, end, absent, aend);
+#endif
+ if ((absent > aend) && (s > absent)) {
+ /* An empty match occurred in (?~...) at the start point.
+ * Never match. */
+ STACK_POP;
+ goto fail;
+ }
+ else if ((s >= aend) && (s > absent)) {
+ if (s > aend) {
+ /* Only one (or less) character matched in the last iteration.
+ * This is not a possible point. */
+ goto fail;
+ }
+ /* All possible points were found. Try matching after (?~...). */
+ DATA_ENSURE(0);
+ p += addr;
+ }
+ else {
+ STACK_PUSH_ALT(p + addr, s, sprev, pkeep); /* Push possible point. */
+ n = enclen(encode, s, end);
+ STACK_PUSH_ABSENT_POS(absent, ABSENT_END_POS); /* Save the original pos. */
+ STACK_PUSH_ALT(selfp, s + n, s, pkeep); /* Next iteration. */
+ STACK_PUSH_ABSENT;
+ ABSENT_END_POS = aend;
+ }
+ }
+ MOP_OUT;
+ JUMP;
+
+ CASE(OP_ABSENT_END) MOP_IN(OP_ABSENT_END);
+ /* The pattern inside (?~...) was matched.
+ * Set the end-pos temporary and go to next iteration. */
+ if (sprev < ABSENT_END_POS)
+ ABSENT_END_POS = sprev;
+#ifdef ONIG_DEBUG_MATCH
+ fprintf(stderr, "ABSENT_END: end:%p\n", ABSENT_END_POS);
+#endif
+ STACK_POP_TIL_ABSENT;
+ goto fail;
+ NEXT;
+
#ifdef USE_SUBEXP_CALL
CASE(OP_CALL) MOP_IN(OP_CALL);
GET_ABSADDR_INC(addr, p);
@@ -3270,7 +3363,7 @@ bm_search_notrev(regex_t* reg, const UChar* target, const UChar* target_end,
# ifdef ONIG_DEBUG_SEARCH
fprintf(stderr, "bm_search_notrev: text: %"PRIuPTR" (%p), text_end: %"PRIuPTR" (%p), text_range: %"PRIuPTR" (%p)\n",
- text, text, text_end, text_end, text_range, text_range);
+ (uintptr_t )text, text, (uintptr_t )text_end, text_end, (uintptr_t )text_range, text_range);
# endif
tail = target_end - 1;
@@ -3326,8 +3419,8 @@ bm_search(regex_t* reg, const UChar* target, const UChar* target_end,
const UChar *tail;
# ifdef ONIG_DEBUG_SEARCH
- fprintf(stderr, "bm_search: text: %"PRIuPTR", text_end: %"PRIuPTR", text_range: %"PRIuPTR"\n",
- text, text_end, text_range);
+ fprintf(stderr, "bm_search: text: %"PRIuPTR" (%p), text_end: %"PRIuPTR" (%p), text_range: %"PRIuPTR" (%p)\n",
+ (uintptr_t )text, text, (uintptr_t )text_end, text_end, (uintptr_t )text_range, text_range);
# endif
end = text_range + (target_end - target) - 1;
@@ -3482,8 +3575,8 @@ bm_search_notrev(regex_t* reg, const UChar* target, const UChar* target_end,
OnigEncoding enc = reg->enc;
# ifdef ONIG_DEBUG_SEARCH
- fprintf(stderr, "bm_search_notrev: text: %"PRIdPTR" (%p), text_end: %"PRIdPTR" (%p), text_range: %"PRIdPTR" (%p)\n",
- (intptr_t )text, text, (intptr_t )text_end, text_end, (intptr_t )text_range, text_range);
+ fprintf(stderr, "bm_search_notrev: text: %"PRIuPTR" (%p), text_end: %"PRIuPTR" (%p), text_range: %"PRIuPTR" (%p)\n",
+ (uintptr_t )text, text, (uintptr_t )text_end, text_end, (uintptr_t )text_range, text_range);
# endif
tail = target_end - 1;
@@ -3542,8 +3635,8 @@ bm_search(regex_t* reg, const UChar* target, const UChar* target_end,
ptrdiff_t tlen1;
# ifdef ONIG_DEBUG_SEARCH
- fprintf(stderr, "bm_search: text: %"PRIuPTR", text_end: %"PRIuPTR", text_range: %"PRIuPTR"\n",
- text, text_end, text_range);
+ fprintf(stderr, "bm_search: text: %"PRIuPTR" (%p), text_end: %"PRIuPTR" (%p), text_range: %"PRIuPTR" (%p)\n",
+ (uintptr_t )text, text, (uintptr_t )text_end, text_end, (uintptr_t )text_range, text_range);
# endif
tail = target_end - 1;
@@ -3595,8 +3688,8 @@ bm_search_notrev_ic(regex_t* reg, const UChar* target, const UChar* target_end,
int case_fold_flag = reg->case_fold_flag;
# ifdef ONIG_DEBUG_SEARCH
- fprintf(stderr, "bm_search_notrev_ic: text: %"PRIdPTR" (%p), text_end: %"PRIdPTR" (%p), text_range: %"PRIdPTR" (%p)\n",
- (intptr_t )text, text, (intptr_t )text_end, text_end, (intptr_t )text_range, text_range);
+ fprintf(stderr, "bm_search_notrev_ic: text: %"PRIuPTR" (%p), text_end: %"PRIuPTR" (%p), text_range: %"PRIuPTR" (%p)\n",
+ (uintptr_t )text, text, (uintptr_t )text_end, text_end, (uintptr_t )text_range, text_range);
# endif
tail = target_end - 1;
@@ -3653,8 +3746,8 @@ bm_search_ic(regex_t* reg, const UChar* target, const UChar* target_end,
int case_fold_flag = reg->case_fold_flag;
# ifdef ONIG_DEBUG_SEARCH
- fprintf(stderr, "bm_search_ic: text: %"PRIdPTR" (%p), text_end: %"PRIdPTR" (%p), text_range: %"PRIdPTR" (%p)\n",
- (intptr_t )text, text, (intptr_t )text_end, text_end, (intptr_t )text_range, text_range);
+ fprintf(stderr, "bm_search_ic: text: %"PRIuPTR" (%p), text_end: %"PRIuPTR" (%p), text_range: %"PRIuPTR" (%p)\n",
+ (uintptr_t )text, text, (uintptr_t )text_end, text_end, (uintptr_t )text_range, text_range);
# endif
tail = target_end - 1;
@@ -3814,7 +3907,7 @@ forward_search_range(regex_t* reg, const UChar* str, const UChar* end, UChar* s,
#ifdef ONIG_DEBUG_SEARCH
fprintf(stderr, "forward_search_range: str: %"PRIuPTR" (%p), end: %"PRIuPTR" (%p), s: %"PRIuPTR" (%p), range: %"PRIuPTR" (%p)\n",
- (intptr_t )str, str, (intptr_t )end, end, (intptr_t )s, s, (intptr_t )range, range);
+ (uintptr_t )str, str, (uintptr_t )end, end, (uintptr_t )s, s, (uintptr_t )range, range);
#endif
p = s;
@@ -4068,7 +4161,7 @@ onig_search_gpos(regex_t* reg, const UChar* str, const UChar* end,
#ifdef ONIG_DEBUG_SEARCH
fprintf(stderr,
"onig_search (entry point): str: %"PRIuPTR" (%p), end: %"PRIuPTR", start: %"PRIuPTR", range: %"PRIuPTR"\n",
- (intptr_t )str, str, end - str, start - str, range - str);
+ (uintptr_t )str, str, end - str, start - str, range - str);
#endif
if (region) {
@@ -4302,8 +4395,6 @@ onig_search_gpos(regex_t* reg, const UChar* str, const UChar* end,
if ((reg->anchor & ANCHOR_ANYCHAR_STAR) != 0) {
do {
- if ((reg->anchor & ANCHOR_BEGIN_POSITION) == 0)
- msa.gpos = s; /* move \G position */
MATCH_AND_RETURN_CHECK(orig_range);
prev = s;
s += enclen(reg->enc, s, end);
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-20 16:19:16 +0000