1 #if defined(PERL_EXT_RE_DEBUG) && !defined(DEBUGGING)
5 #define PERL_NO_GET_CONTEXT
14 extern REGEXP* my_re_compile (pTHX_ const SV * const pattern, const U32 pm_flags);
15 extern I32 my_regexec (pTHX_ REGEXP * const prog, char* stringarg, char* strend,
16 char* strbeg, I32 minend, SV* screamer,
17 void* data, U32 flags);
19 extern char* my_re_intuit_start (pTHX_ REGEXP * const prog, SV *sv, char *strpos,
20 char *strend, const U32 flags,
21 struct re_scream_pos_data_s *data);
22 extern SV* my_re_intuit_string (pTHX_ REGEXP * const prog);
24 extern void my_regfree (pTHX_ REGEXP * const r);
26 extern void my_reg_numbered_buff_fetch(pTHX_ REGEXP * const rx, const I32 paren,
28 extern void my_reg_numbered_buff_store(pTHX_ REGEXP * const rx, const I32 paren,
29 SV const * const value);
30 extern I32 my_reg_numbered_buff_length(pTHX_ REGEXP * const rx, const I32 paren);
32 extern SV* my_reg_named_buff_fetch(pTHX_ REGEXP * const rx, SV * const key,
35 extern SV* my_reg_qr_package(pTHX_ REGEXP * const rx);
36 #if defined(USE_ITHREADS)
37 extern void* my_regdupe (pTHX_ REGEXP * const r, CLONE_PARAMS *param);
40 EXTERN_C const struct regexp_engine my_reg_engine;
44 const struct regexp_engine my_reg_engine = {
50 my_reg_numbered_buff_fetch,
51 my_reg_numbered_buff_store,
52 my_reg_numbered_buff_length,
53 my_reg_named_buff_fetch,
55 #if defined(USE_ITHREADS)
61 get_re_arg( pTHX_ SV *sv, U32 flags, MAGIC **mgp) {
67 (sv = (SV*)SvRV(sv)) && /* assign deliberate */
68 SvTYPE(sv) == SVt_PVMG &&
69 (mg = mg_find(sv, PERL_MAGIC_qr))) /* assign deliberate */
72 return (REGEXP *)mg->mg_obj;
76 return ((flags && PL_curpm) ? PM_GETRE(PL_curpm) : NULL);
79 MODULE = re PACKAGE = re
84 PL_colorset = 0; /* Allow reinspection of ENV. */
85 /* PL_debug |= DEBUG_r_FLAG; */
86 XPUSHs(sv_2mortal(newSViv(PTR2IV(&my_reg_engine))));
99 Checks if a reference is a regex or not. If the parameter is
100 not a ref, or is not the result of a qr// then returns false
101 in scalar context and an empty list in list context.
102 Otherwise in list context it returns the pattern and the
103 modifiers, in scalar context it returns the pattern just as it
104 would if the qr// was stringified normally, regardless as
105 to the class of the variable and any strigification overloads
109 if ( re = get_re_arg( aTHX_ sv, 0, &mg) ) /* assign deliberate */
111 /* Housten, we have a regex! */
117 if ( GIMME_V == G_ARRAY ) {
119 we are in list context so stringify
120 the modifiers that apply. We ignore "negative
121 modifiers" in this scenario.
124 char *fptr = INT_PAT_MODS;
126 U16 match_flags = (U16)((re->extflags & PMf_COMPILETIME) >> 12);
128 while((ch = *fptr++)) {
129 if(match_flags & 1) {
130 reflags[left++] = ch;
135 pattern = sv_2mortal(newSVpvn(re->precomp,re->prelen));
136 if (re->extflags & RXf_UTF8) SvUTF8_on(pattern);
138 /* return the pattern and the modifiers */
140 XPUSHs(sv_2mortal(newSVpvn(reflags,left)));
143 /* Scalar, so use the string that Perl would return */
144 /* return the pattern in (?msix:..) format */
145 pattern = sv_2mortal(newSVpvn(re->wrapped,re->wraplen));
146 if (re->extflags & RXf_UTF8)
152 /* It ain't a regexp folks */
153 if ( GIMME_V == G_ARRAY ) {
154 /* return the empty list */
157 /* Because of the (?:..) wrapping involved in a
158 stringified pattern it is impossible to get a
159 result for a real regexp that would evaluate to
160 false. Therefore we can return PL_sv_no to signify
161 that the object is not a regex, this means that one
164 if (regex($might_be_a_regex) eq '(?:foo)') { }
166 and not worry about undefined values.
183 if ( re = get_re_arg( aTHX_ sv, 0, 0) ) /* assign deliberate */
187 if (re->anchored_substr) {
188 an = newSVsv(re->anchored_substr);
189 } else if (re->anchored_utf8) {
190 an = newSVsv(re->anchored_utf8);
192 if (re->float_substr) {
193 fl = newSVsv(re->float_substr);
194 } else if (re->float_utf8) {
195 fl = newSVsv(re->float_utf8);