diff options
Diffstat (limited to 'src/regex.c')
| -rw-r--r-- | src/regex.c | 394 |
1 files changed, 211 insertions, 183 deletions
diff --git a/src/regex.c b/src/regex.c index c118af0fdb6..82c5d76f4dc 100644 --- a/src/regex.c +++ b/src/regex.c @@ -37,9 +37,7 @@ #ifdef emacs /* Converts the pointer to the char to BEG-based offset from the start. */ -#define PTR_TO_OFFSET(d) \ - POS_AS_IN_BUFFER (MATCHING_IN_FIRST_STRING \ - ? (d) - string1 : (d) - (string2 - size1)) +#define PTR_TO_OFFSET(d) POS_AS_IN_BUFFER (POINTER_TO_OFFSET (d)) #define POS_AS_IN_BUFFER(p) ((p) + (NILP (re_match_object) || BUFFERP (re_match_object))) #else #define PTR_TO_OFFSET(d) 0 @@ -767,17 +765,17 @@ extract_number_and_incr (destination, source) /* It is useful to test things that ``must'' be true when debugging. */ #include <assert.h> -static int debug = 0; +static int debug = -100000; #define DEBUG_STATEMENT(e) e -#define DEBUG_PRINT1(x) if (debug) printf (x) -#define DEBUG_PRINT2(x1, x2) if (debug) printf (x1, x2) -#define DEBUG_PRINT3(x1, x2, x3) if (debug) printf (x1, x2, x3) -#define DEBUG_PRINT4(x1, x2, x3, x4) if (debug) printf (x1, x2, x3, x4) +#define DEBUG_PRINT1(x) if (debug > 0) printf (x) +#define DEBUG_PRINT2(x1, x2) if (debug > 0) printf (x1, x2) +#define DEBUG_PRINT3(x1, x2, x3) if (debug > 0) printf (x1, x2, x3) +#define DEBUG_PRINT4(x1, x2, x3, x4) if (debug > 0) printf (x1, x2, x3, x4) #define DEBUG_PRINT_COMPILED_PATTERN(p, s, e) \ - if (debug) print_partial_compiled_pattern (s, e) + if (debug > 0) print_partial_compiled_pattern (s, e) #define DEBUG_PRINT_DOUBLE_STRING(w, s1, sz1, s2, sz2) \ - if (debug) print_double_string (w, s1, sz1, s2, sz2) + if (debug > 0) print_double_string (w, s1, sz1, s2, sz2) /* Print the fastmap in human-readable form. */ @@ -840,6 +838,10 @@ print_partial_compiled_pattern (start, end) printf ("/no_op"); break; + case succeed: + printf ("/succeed"); + break; + case exactn: mcnt = *p++; printf ("/exactn/%d", mcnt); @@ -872,9 +874,8 @@ print_partial_compiled_pattern (start, end) { register int c, last = -100; register int in_range = 0; - int length = *p & 0x7f; - int has_range_table = *p & 0x80; - int range_length = p[length + 2] + p[length + 3] * 0x100; + int length = CHARSET_BITMAP_SIZE (p - 1); + int has_range_table = CHARSET_RANGE_TABLE_EXISTS_P (p - 1); printf ("/charset [%s", (re_opcode_t) *(p - 1) == charset_not ? "^" : ""); @@ -904,20 +905,23 @@ print_partial_compiled_pattern (start, end) last = c; } - p += 1 + length; - if (in_range) putchar (last); putchar (']'); - if (has_range_table) - printf ("has-range-table"); + p += 1 + length; - /* ??? Should print the range table; for now, - just skip it. */ if (has_range_table) - p += 4 + 6 * range_length; + { + int count; + printf ("has-range-table"); + + /* ??? Should print the range table; for now, just skip it. */ + p += 2; /* skip range table bits */ + EXTRACT_NUMBER_AND_INCR (count, p); + p = CHARSET_RANGE_TABLE_END (p, count); + } } break; @@ -962,19 +966,19 @@ print_partial_compiled_pattern (start, end) case succeed_n: extract_number_and_incr (&mcnt, &p); extract_number_and_incr (&mcnt2, &p); - printf ("/succeed_n to %d, %d times", p + mcnt - start, mcnt2); + printf ("/succeed_n to %d, %d times", p - 2 + mcnt - start, mcnt2); break; case jump_n: extract_number_and_incr (&mcnt, &p); extract_number_and_incr (&mcnt2, &p); - printf ("/jump_n to %d, %d times", p + mcnt - start, mcnt2); + printf ("/jump_n to %d, %d times", p - 2 + mcnt - start, mcnt2); break; case set_number_at: extract_number_and_incr (&mcnt, &p); extract_number_and_incr (&mcnt2, &p); - printf ("/set_number_at location %d to %d", p + mcnt - start, mcnt2); + printf ("/set_number_at location %d to %d", p - 2 + mcnt - start, mcnt2); break; case wordbound: @@ -1515,10 +1519,19 @@ do { \ /* Subroutine declarations and macros for regex_compile. */ -static void store_op1 (), store_op2 (); -static void insert_op1 (), insert_op2 (); -static boolean at_begline_loc_p (), at_endline_loc_p (); -static boolean group_in_compile_stack (); +static void store_op1 _RE_ARGS((re_opcode_t op, unsigned char *loc, int arg)); +static void store_op2 _RE_ARGS((re_opcode_t op, unsigned char *loc, + int arg1, int arg2)); +static void insert_op1 _RE_ARGS((re_opcode_t op, unsigned char *loc, + int arg, unsigned char *end)); +static void insert_op2 _RE_ARGS((re_opcode_t op, unsigned char *loc, + int arg1, int arg2, unsigned char *end)); +static boolean at_begline_loc_p _RE_ARGS((const unsigned char *pattern, + const unsigned char *p, + reg_syntax_t syntax)); +static boolean at_endline_loc_p _RE_ARGS((const unsigned char *p, + const unsigned char *pend, + reg_syntax_t syntax)); /* Fetch the next character in the uncompiled pattern---translating it if necessary. Also cast from a signed character in the constant @@ -1526,8 +1539,8 @@ static boolean group_in_compile_stack (); as an array index (in, e.g., `translate'). */ #ifndef PATFETCH #define PATFETCH(c) \ - do {if (p == pend) return REG_EEND; \ - c = *p++; \ + do { \ + PATFETCH_RAW (c); \ if (RE_TRANSLATE_P (translate)) c = RE_TRANSLATE (translate, c); \ } while (0) #endif @@ -1760,7 +1773,7 @@ struct range_table_work_area /* Get the next unsigned number in the uncompiled pattern. */ #define GET_UNSIGNED_NUMBER(num) \ - { if (p != pend) \ + do { if (p != pend) \ { \ PATFETCH (c); \ while (ISDIGIT (c)) \ @@ -1773,7 +1786,7 @@ struct range_table_work_area PATFETCH (c); \ } \ } \ - } + } while (0) #define CHAR_CLASS_MAX_LENGTH 6 /* Namely, `xdigit'. */ @@ -1787,6 +1800,12 @@ struct range_table_work_area || STREQ (string, "word") \ || STREQ (string, "ascii") || STREQ (string, "nonascii") \ || STREQ (string, "unibyte") || STREQ (string, "multibyte")) + +/* QUIT is only used on NTemacs. */ +#if !defined (WINDOWSNT) || !defined (emacs) +#undef QUIT +#define QUIT +#endif #ifndef MATCH_MAY_ALLOCATE @@ -1827,6 +1846,10 @@ regex_grow_registers (num_regs) #endif /* not MATCH_MAY_ALLOCATE */ +static boolean group_in_compile_stack _RE_ARGS ((compile_stack_type + compile_stack, + regnum_t regnum)); + /* `regex_compile' compiles PATTERN (of length SIZE) according to SYNTAX. Returns one of error codes defined in `regex.h', or zero for success. @@ -1927,9 +1950,9 @@ regex_compile (pattern, size, syntax, bufp) struct range_table_work_area range_table_work; #ifdef DEBUG - /* debug = 1; */ + debug++; DEBUG_PRINT1 ("\nCompiling pattern: "); - if (debug) + if (debug > 0) { unsigned debug_count; @@ -2102,7 +2125,7 @@ regex_compile (pattern, size, syntax, bufp) } /* If we get here, we found another repeat character. */ - } + } /* Star, etc. applied to an empty pattern is equivalent to an empty pattern. */ @@ -2113,62 +2136,62 @@ regex_compile (pattern, size, syntax, bufp) and also whether or not two or more matches is allowed. */ if (greedy) { - if (many_times_ok) - { /* More than one repetition is allowed, so put in at the - end a backward relative jump from `b' to before the next - jump we're going to put in below (which jumps from - laststart to after this jump). - - But if we are at the `*' in the exact sequence `.*\n', - insert an unconditional jump backwards to the ., - instead of the beginning of the loop. This way we only - push a failure point once, instead of every time - through the loop. */ - assert (p - 1 > pattern); - - /* Allocate the space for the jump. */ - GET_BUFFER_SPACE (3); + if (many_times_ok) + { /* More than one repetition is allowed, so put in at the + end a backward relative jump from `b' to before the next + jump we're going to put in below (which jumps from + laststart to after this jump). + + But if we are at the `*' in the exact sequence `.*\n', + insert an unconditional jump backwards to the ., + instead of the beginning of the loop. This way we only + push a failure point once, instead of every time + through the loop. */ + assert (p - 1 > pattern); + + /* Allocate the space for the jump. */ + GET_BUFFER_SPACE (3); - /* We know we are not at the first character of the pattern, - because laststart was nonzero. And we've already - incremented `p', by the way, to be the character after - the `*'. Do we have to do something analogous here - for null bytes, because of RE_DOT_NOT_NULL? */ - if (TRANSLATE (*(p - 2)) == TRANSLATE ('.') - && zero_times_ok - && p < pend - && TRANSLATE (*p) == TRANSLATE ('\n') - && !(syntax & RE_DOT_NEWLINE)) - { /* We have .*\n. */ - STORE_JUMP (jump, b, laststart); - keep_string_p = true; - } - else - STORE_JUMP (jump, b, laststart - 3); + /* We know we are not at the first character of the pattern, + because laststart was nonzero. And we've already + incremented `p', by the way, to be the character after + the `*'. Do we have to do something analogous here + for null bytes, because of RE_DOT_NOT_NULL? */ + if (TRANSLATE (*(p - 2)) == TRANSLATE ('.') + && zero_times_ok + && p < pend + && TRANSLATE (*p) == TRANSLATE ('\n') + && !(syntax & RE_DOT_NEWLINE)) + { /* We have .*\n. */ + STORE_JUMP (jump, b, laststart); + keep_string_p = true; + } + else + STORE_JUMP (jump, b, laststart - 3); - /* We've added more stuff to the buffer. */ - b += 3; - } + /* We've added more stuff to the buffer. */ + b += 3; + } - /* On failure, jump from laststart to b + 3, which will be the - end of the buffer after this jump is inserted. */ - GET_BUFFER_SPACE (3); - if (!zero_times_ok) - { - assert (many_times_ok); - INSERT_JUMP (on_failure_jump_smart, b - 3, b + 3); - pending_exact = 0; - b += 3; - } - else - { - INSERT_JUMP (keep_string_p ? on_failure_keep_string_jump - : !many_times_ok ? - on_failure_jump : on_failure_jump_smart, - laststart, b + 3); - pending_exact = 0; - b += 3; - } + /* On failure, jump from laststart to b + 3, which will be the + end of the buffer after this jump is inserted. */ + GET_BUFFER_SPACE (3); + if (!zero_times_ok) + { + assert (many_times_ok); + INSERT_JUMP (on_failure_jump_smart, b - 3, b + 3); + pending_exact = 0; + b += 3; + } + else + { + INSERT_JUMP (keep_string_p ? on_failure_keep_string_jump + : !many_times_ok ? + on_failure_jump : on_failure_jump_smart, + laststart, b + 3); + pending_exact = 0; + b += 3; + } } else /* not greedy */ { /* I wish the greedy and non-greedy cases could be merged. */ @@ -2589,41 +2612,41 @@ regex_compile (pattern, size, syntax, bufp) regnum++; } - if (COMPILE_STACK_FULL) - { - RETALLOC (compile_stack.stack, compile_stack.size << 1, - compile_stack_elt_t); - if (compile_stack.stack == NULL) return REG_ESPACE; + if (COMPILE_STACK_FULL) + { + RETALLOC (compile_stack.stack, compile_stack.size << 1, + compile_stack_elt_t); + if (compile_stack.stack == NULL) return REG_ESPACE; - compile_stack.size <<= 1; - } + compile_stack.size <<= 1; + } - /* These are the values to restore when we hit end of this - group. They are all relative offsets, so that if the - whole pattern moves because of realloc, they will still - be valid. */ - COMPILE_STACK_TOP.begalt_offset = begalt - bufp->buffer; - COMPILE_STACK_TOP.fixup_alt_jump - = fixup_alt_jump ? fixup_alt_jump - bufp->buffer + 1 : 0; - COMPILE_STACK_TOP.laststart_offset = b - bufp->buffer; - COMPILE_STACK_TOP.regnum = shy ? -regnum : regnum; - - /* Do not push a - start_memory for groups beyond the last one we can - represent in the compiled pattern. */ - if (regnum <= MAX_REGNUM && !shy) - BUF_PUSH_2 (start_memory, regnum); - - compile_stack.avail++; - - fixup_alt_jump = 0; - laststart = 0; - begalt = b; - /* If we've reached MAX_REGNUM groups, then this open - won't actually generate any code, so we'll have to - clear pending_exact explicitly. */ - pending_exact = 0; - break; + /* These are the values to restore when we hit end of this + group. They are all relative offsets, so that if the + whole pattern moves because of realloc, they will still + be valid. */ + COMPILE_STACK_TOP.begalt_offset = begalt - bufp->buffer; + COMPILE_STACK_TOP.fixup_alt_jump + = fixup_alt_jump ? fixup_alt_jump - bufp->buffer + 1 : 0; + COMPILE_STACK_TOP.laststart_offset = b - bufp->buffer; + COMPILE_STACK_TOP.regnum = shy ? -regnum : regnum; + + /* Do not push a + start_memory for groups beyond the last one we can + represent in the compiled pattern. */ + if (regnum <= MAX_REGNUM && !shy) + BUF_PUSH_2 (start_memory, regnum); + + compile_stack.avail++; + + fixup_alt_jump = 0; + laststart = 0; + begalt = b; + /* If we've reached MAX_REGNUM groups, then this open + won't actually generate any code, so we'll have to + clear pending_exact explicitly. */ + pending_exact = 0; + break; } case ')': @@ -2737,7 +2760,7 @@ regex_compile (pattern, size, syntax, bufp) /* If got here, then the syntax allows intervals. */ /* At least (most) this many matches must be made. */ - int lower_bound = -1, upper_bound = -1; + int lower_bound = 0, upper_bound = -1; beg_interval = p - 1; @@ -3079,13 +3102,13 @@ regex_compile (pattern, size, syntax, bufp) bufp->used = b - bufp->buffer; #ifdef DEBUG - if (debug) + if (debug > 0) { re_compile_fastmap (bufp); DEBUG_PRINT1 ("\nCompiled pattern: \n"); print_compiled_pattern (bufp); - /* debug = 0; */ } + debug--; #endif /* DEBUG */ #ifndef MATCH_MAY_ALLOCATE @@ -3191,7 +3214,7 @@ insert_op2 (op, loc, arg1, arg2, end) static boolean at_begline_loc_p (pattern, p, syntax) - re_char *pattern, *p; + const unsigned char *pattern, *p; reg_syntax_t syntax; { re_char *prev = p - 2; @@ -3210,8 +3233,8 @@ at_begline_loc_p (pattern, p, syntax) static boolean at_endline_loc_p (p, pend, syntax) - re_char *p, *pend; - int syntax; + const unsigned char *p, *pend; + reg_syntax_t syntax; { re_char *next = p; boolean next_backslash = *next == '\\'; @@ -3281,9 +3304,11 @@ re_compile_fastmap (bufp) unsigned char *p = pattern; register unsigned char *pend = pattern + size; +#if defined (REL_ALLOC) && defined (REGEX_MALLOC) /* This holds the pointer to the failure stack, when it is allocated relocatably. */ fail_stack_elt_t *failure_stack_ptr; +#endif /* Assume that each path through the pattern can be null until proven otherwise. We set this false at the bottom of switch @@ -3882,8 +3907,7 @@ re_search_2 (bufp, str1, size1, str2, size2, startpos, range, regs, stop) #ifdef emacs gl_state.object = re_match_object; { - int adjpos = NILP (re_match_object) || BUFFERP (re_match_object); - int charpos = SYNTAX_TABLE_BYTE_TO_CHAR (startpos + adjpos); + int charpos = SYNTAX_TABLE_BYTE_TO_CHAR (POS_AS_IN_BUFFER (startpos)); SETUP_SYNTAX_TABLE_FOR_OBJECT (re_match_object, charpos, 1); } @@ -3963,7 +3987,7 @@ re_search_2 (bufp, str1, size1, str2, size2, startpos, range, regs, stop) } else /* Searching backwards. */ { - int room = (size1 == 0 || startpos >= size1 + int room = (startpos >= size1 ? size2 + size1 - startpos : size1 - startpos); @@ -4064,10 +4088,6 @@ static int bcmp_translate (); ? ((regoff_t) ((ptr) - string1)) \ : ((regoff_t) ((ptr) - string2 + size1))) -/* Macros for dealing with the split strings in re_match_2. */ - -#define MATCHING_IN_FIRST_STRING (dend == end_match_1) - /* Call before fetching a character with *d. This switches over to string2 if necessary. */ #define PREFETCH() \ @@ -4377,9 +4397,8 @@ re_match_2 (bufp, string1, size1, string2, size2, pos, regs, stop) #ifdef emacs int charpos; - int adjpos = NILP (re_match_object) || BUFFERP (re_match_object); gl_state.object = re_match_object; - charpos = SYNTAX_TABLE_BYTE_TO_CHAR (pos + adjpos); + charpos = SYNTAX_TABLE_BYTE_TO_CHAR (POS_AS_IN_BUFFER (pos)); SETUP_SYNTAX_TABLE_FOR_OBJECT (re_match_object, charpos, 1); #endif @@ -4415,6 +4434,12 @@ re_match_2_internal (bufp, string1, size1, string2, size2, pos, regs, stop) /* Where we are in the data, and the end of the current string. */ re_char *d, *dend; + /* Used sometimes to remember where we were before starting matching + an operator so that we can go back in case of failure. This "atomic" + behavior of matching opcodes is indispensable to the correctness + of the on_failure_keep_string_jump optimization. */ + re_char *dfail; + /* Where we are in the pattern, and the end of the pattern. */ unsigned char *p = bufp->buffer; register unsigned char *pend = p + bufp->used; @@ -4440,9 +4465,11 @@ re_match_2_internal (bufp, string1, size1, string2, size2, pos, regs, stop) unsigned nfailure_points_pushed = 0, nfailure_points_popped = 0; #endif +#if defined (REL_ALLOC) && defined (REGEX_MALLOC) /* This holds the pointer to the failure stack, when it is allocated relocatably. */ fail_stack_elt_t *failure_stack_ptr; +#endif /* We fill all the registers internally, independent of what we return, for use in backreferences. The number here includes @@ -4526,9 +4553,16 @@ re_match_2_internal (bufp, string1, size1, string2, size2, pos, regs, stop) start_memory/stop_memory has been seen for. Also initialize the register information struct. */ for (mcnt = 1; mcnt < num_regs; mcnt++) + regstart[mcnt] = regend[mcnt] = REG_UNSET_VALUE; + + /* Shorten strings to `stop'. */ + if (stop <= size1) { - regstart[mcnt] = regend[mcnt] = REG_UNSET_VALUE; + size1 = stop; + size2 = 0; } + else if (stop <= size1 + size2) + size2 = stop - size1; /* We move `string1' into `string2' if the latter's empty -- but not if `string1' is null. */ @@ -4543,16 +4577,8 @@ re_match_2_internal (bufp, string1, size1, string2, size2, pos, regs, stop) end2 = string2 + size2; /* Compute where to stop matching, within the two strings. */ - if (stop <= size1) - { - end_match_1 = string1 + stop; - end_match_2 = string2; - } - else - { - end_match_1 = end1; - end_match_2 = string2 + stop - size1; - } + end_match_1 = end1; + end_match_2 = end2; /* `p' scans through the pattern as `d' scans through the data. `dend' is the end of the input string that `d' points within. `d' @@ -4595,7 +4621,7 @@ re_match_2_internal (bufp, string1, size1, string2, size2, pos, regs, stop) /* 1 if this match ends in the same string (string1 or string2) as the best previous match. */ boolean same_str_p = (FIRST_STRING_P (match_end) - == MATCHING_IN_FIRST_STRING); + == FIRST_STRING_P (d)); /* 1 if this match is the best seen so far. */ boolean best_match_p; @@ -4604,7 +4630,7 @@ re_match_2_internal (bufp, string1, size1, string2, size2, pos, regs, stop) if (same_str_p) best_match_p = d > match_end; else - best_match_p = !MATCHING_IN_FIRST_STRING; + best_match_p = !FIRST_STRING_P (d); DEBUG_PRINT1 ("backtracking.\n"); @@ -4703,9 +4729,7 @@ re_match_2_internal (bufp, string1, size1, string2, size2, pos, regs, stop) if (regs->num_regs > 0) { regs->start[0] = pos; - regs->end[0] = (MATCHING_IN_FIRST_STRING - ? ((regoff_t) (d - string1)) - : ((regoff_t) (d - string2 + size1))); + regs->end[0] = POINTER_TO_OFFSET (d); } /* Go through the first `min (num_regs, regs->num_regs)' @@ -4737,9 +4761,7 @@ re_match_2_internal (bufp, string1, size1, string2, size2, pos, regs, stop) nfailure_points_pushed - nfailure_points_popped); DEBUG_PRINT2 ("%u registers pushed.\n", num_regs_pushed); - mcnt = d - pos - (MATCHING_IN_FIRST_STRING - ? string1 - : string2 - size1); + mcnt = POINTER_TO_OFFSET (d) - pos; DEBUG_PRINT2 ("Returning %d from re_match_2.\n", mcnt); @@ -4767,6 +4789,9 @@ re_match_2_internal (bufp, string1, size1, string2, size2, pos, regs, stop) mcnt = *p++; DEBUG_PRINT2 ("EXECUTING exactn %d.\n", mcnt); + /* Remember the start point to rollback upon failure. */ + dfail = d; + /* This is written out as an if-else so we don't waste time testing `translate' inside the loop. */ if (RE_TRANSLATE_P (translate)) @@ -4784,7 +4809,10 @@ re_match_2_internal (bufp, string1, size1, string2, size2, pos, regs, stop) if (RE_TRANSLATE (translate, buf_ch) != pat_ch) - goto fail; + { + d = dfail; + goto fail; + } p += pat_charlen; d += buf_charlen; @@ -4797,7 +4825,10 @@ re_match_2_internal (bufp, string1, size1, string2, size2, pos, regs, stop) { PREFETCH (); if (RE_TRANSLATE (translate, *d) != *p++) - goto fail; + { + d = dfail; + goto fail; + } d++; } while (--mcnt); @@ -4807,7 +4838,11 @@ re_match_2_internal (bufp, string1, size1, string2, size2, pos, regs, stop) do { PREFETCH (); - if (*d++ != *p++) goto fail; + if (*d++ != *p++) + { + d = dfail; + goto fail; + } } while (--mcnt); } @@ -4993,6 +5028,9 @@ re_match_2_internal (bufp, string1, size1, string2, size2, pos, regs, stop) /* Where in input to try to start matching. */ d2 = regstart[regno]; + /* Remember the start point to rollback upon failure. */ + dfail = d; + /* Where to stop matching; if both the place to start and the place to stop matching are in the same string, then set to the place to stop, otherwise, for now have to use @@ -5033,7 +5071,10 @@ re_match_2_internal (bufp, string1, size1, string2, size2, pos, regs, stop) if (RE_TRANSLATE_P (translate) ? bcmp_translate (d, d2, mcnt, translate) : bcmp (d, d2, mcnt)) - goto fail; + { + d = dfail; + goto fail; + } d += mcnt, d2 += mcnt; } } @@ -5166,11 +5207,7 @@ re_match_2_internal (bufp, string1, size1, string2, size2, pos, regs, stop) the repetition text and either the following jump or pop_failure_jump back to this on_failure_jump. */ case on_failure_jump: - -#if defined (WINDOWSNT) && defined (emacs) QUIT; -#endif - EXTRACT_NUMBER_AND_INCR (mcnt, p); DEBUG_PRINT3 ("EXECUTING on_failure_jump %d (to %p):\n", mcnt, p + mcnt); @@ -5186,9 +5223,7 @@ re_match_2_internal (bufp, string1, size1, string2, size2, pos, regs, stop) then we can use a non-backtracking loop based on on_failure_jump_exclusive instead of on_failure_jump_loop. */ case on_failure_jump_smart: -#if defined (WINDOWSNT) && defined (emacs) QUIT; -#endif EXTRACT_NUMBER_AND_INCR (mcnt, p); DEBUG_PRINT3 ("EXECUTING on_failure_jump_smart %d (to %p).\n", mcnt, p + mcnt); @@ -5199,7 +5234,7 @@ re_match_2_internal (bufp, string1, size1, string2, size2, pos, regs, stop) p -= 3; /* Reset so that we will re-execute the instruction once it's been changed. */ - /* DEBUG_STATEMENT (debug = 1); */ + DEBUG_STATEMENT (debug += 2); if (mutually_exclusive_p (bufp, p1, p2)) { /* Use a fast `on_failure_keep_string_jump' loop. */ @@ -5212,16 +5247,14 @@ re_match_2_internal (bufp, string1, size1, string2, size2, pos, regs, stop) DEBUG_PRINT1 (" smart default => slow loop.\n"); *p = (unsigned char) on_failure_jump_loop; } - /* DEBUG_STATEMENT (debug = 0); */ + DEBUG_STATEMENT (debug -= 2); } break; /* Unconditionally jump (without popping any failure points). */ case jump: unconditional_jump: -#if defined (WINDOWSNT) && defined (emacs) QUIT; -#endif EXTRACT_NUMBER_AND_INCR (mcnt, p); /* Get the amount to jump. */ DEBUG_PRINT2 ("EXECUTING jump %d ", mcnt); p += mcnt; /* Do the jump. */ @@ -5286,7 +5319,7 @@ re_match_2_internal (bufp, string1, size1, string2, size2, pos, regs, stop) not = (re_opcode_t) *(p - 1) == notwordbound; DEBUG_PRINT2 ("EXECUTING %swordbound.\n", not?"not":""); - /* We SUCCEED in one of the following cases: */ + /* We SUCCEED (or FAIL) in one of the following cases: */ /* Case 1: D is at the beginning or the end of string. */ if (AT_STRINGS_BEG (d) || AT_STRINGS_END (d)) @@ -5330,21 +5363,19 @@ re_match_2_internal (bufp, string1, size1, string2, size2, pos, regs, stop) /* Case 1: D is at the end of string. */ if (AT_STRINGS_END (d)) - goto fail; + goto fail; else { /* C1 is the character before D, S1 is the syntax of C1, C2 is the character at D, and S2 is the syntax of C2. */ int c1, c2, s1, s2; - int pos1 = PTR_TO_OFFSET (d); - int charpos; - - PREFETCH (); - c2 = STRING_CHAR (d, dend - d); #ifdef emacs - charpos = SYNTAX_TABLE_BYTE_TO_CHAR (pos1); + int charpos = SYNTAX_TABLE_BYTE_TO_CHAR (PTR_TO_OFFSET (d)); UPDATE_SYNTAX_TABLE (charpos); #endif + PREFETCH (); + /* FIXME: This does a STRING_CHAR even for unibyte buffers. */ + c2 = STRING_CHAR (d, dend - d); s2 = SYNTAX (c2); /* Case 2: S2 is not Sword. */ @@ -5381,14 +5412,11 @@ re_match_2_internal (bufp, string1, size1, string2, size2, pos, regs, stop) /* C1 is the character before D, S1 is the syntax of C1, C2 is the character at D, and S2 is the syntax of C2. */ int c1, c2, s1, s2; - int pos1 = PTR_TO_OFFSET (d); - int charpos; - - GET_CHAR_BEFORE_2 (c1, d, string1, end1, string2, end2); #ifdef emacs - charpos = SYNTAX_TABLE_BYTE_TO_CHAR (pos1 - 1); + int charpos = SYNTAX_TABLE_BYTE_TO_CHAR (PTR_TO_OFFSET (d) - 1); UPDATE_SYNTAX_TABLE (charpos); #endif + GET_CHAR_BEFORE_2 (c1, d, string1, end1, string2, end2); s1 = SYNTAX (c1); /* Case 2: S1 is not Sword. */ @@ -5399,6 +5427,7 @@ re_match_2_internal (bufp, string1, size1, string2, size2, pos, regs, stop) if (!AT_STRINGS_END (d)) { PREFETCH (); + /* FIXME: This does a STRING_CHAR even for unibyte buffers. */ c2 = STRING_CHAR (d, dend - d); #ifdef emacs UPDATE_SYNTAX_TABLE_FORWARD (charpos); @@ -5557,9 +5586,7 @@ re_match_2_internal (bufp, string1, size1, string2, size2, pos, regs, stop) /* We goto here if a matching operation fails. */ fail: -#if defined (WINDOWSNT) && defined (emacs) QUIT; -#endif if (!FAIL_STACK_EMPTY ()) { re_char *str; @@ -5631,6 +5658,7 @@ bcmp_translate (s1, s2, len, translate) int p1_charlen, p2_charlen; int p1_ch, p2_ch; + /* FIXME: This assumes `multibyte = true'. */ p1_ch = STRING_CHAR_AND_LENGTH (p1, p1_end - p1, p1_charlen); p2_ch = STRING_CHAR_AND_LENGTH (p2, p2_end - p2, p2_charlen); |