1 #if defined(PERL_EXT_RE_DEBUG) && !defined(DEBUGGING)
5 #define PERL_NO_GET_CONTEXT
14 extern regexp* my_re_compile (pTHX_ char* exp, char* xend, PMOP* pm);
15 extern I32 my_regexec (pTHX_ regexp* 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 *prog, SV *sv, char *strpos,
20 char *strend, U32 flags,
21 struct re_scream_pos_data_s *data);
22 extern SV* my_re_intuit_string (pTHX_ regexp *prog);
24 extern void my_regfree (pTHX_ struct regexp* r);
25 extern SV* my_reg_numbered_buff_get(pTHX_ const REGEXP * const rx, I32 paren, SV* usesv);
26 extern SV* my_reg_named_buff_get(pTHX_ const REGEXP * const rx, SV* namesv, U32 flags);
27 #if defined(USE_ITHREADS)
28 extern void* my_regdupe (pTHX_ const regexp *r, CLONE_PARAMS *param);
31 EXTERN_C const struct regexp_engine my_reg_engine;
35 const struct regexp_engine my_reg_engine = {
41 my_reg_numbered_buff_get,
42 my_reg_named_buff_get,
43 #if defined(USE_ITHREADS)
49 get_re_arg( pTHX_ SV *sv, U32 flags, MAGIC **mgp) {
55 (sv = (SV*)SvRV(sv)) && /* assign deliberate */
56 SvTYPE(sv) == SVt_PVMG &&
57 (mg = mg_find(sv, PERL_MAGIC_qr))) /* assign deliberate */
60 return (regexp *)mg->mg_obj;
64 return ((flags && PL_curpm) ? PM_GETRE(PL_curpm) : NULL);
67 MODULE = re PACKAGE = re
72 PL_colorset = 0; /* Allow reinspection of ENV. */
73 /* PL_debug |= DEBUG_r_FLAG; */
74 XPUSHs(sv_2mortal(newSViv(PTR2IV(&my_reg_engine))));
87 Checks if a reference is a regex or not. If the parameter is
88 not a ref, or is not the result of a qr// then returns false
89 in scalar context and an empty list in list context.
90 Otherwise in list context it returns the pattern and the
91 modifiers, in scalar context it returns the pattern just as it
92 would if the qr// was stringified normally, regardless as
93 to the class of the variable and any strigification overloads
97 if ( re = get_re_arg( aTHX_ sv, 0, &mg) ) /* assign deliberate */
99 /* Housten, we have a regex! */
105 if ( GIMME_V == G_ARRAY ) {
107 we are in list context so stringify
108 the modifiers that apply. We ignore "negative
109 modifiers" in this scenario.
112 char *fptr = INT_PAT_MODS;
114 U16 match_flags = (U16)((re->extflags & PMf_COMPILETIME) >> 12);
116 while((ch = *fptr++)) {
117 if(match_flags & 1) {
118 reflags[left++] = ch;
123 pattern = sv_2mortal(newSVpvn(re->precomp,re->prelen));
124 if (re->extflags & RXf_UTF8) SvUTF8_on(pattern);
126 /* return the pattern and the modifiers */
128 XPUSHs(sv_2mortal(newSVpvn(reflags,left)));
131 /* Scalar, so use the string that Perl would return */
132 /* return the pattern in (?msix:..) format */
133 pattern = sv_2mortal(newSVpvn(re->wrapped,re->wraplen));
134 if (re->extflags & RXf_UTF8)
140 /* It ain't a regexp folks */
141 if ( GIMME_V == G_ARRAY ) {
142 /* return the empty list */
145 /* Because of the (?:..) wrapping involved in a
146 stringified pattern it is impossible to get a
147 result for a real regexp that would evaluate to
148 false. Therefore we can return PL_sv_no to signify
149 that the object is not a regex, this means that one
152 if (regex($might_be_a_regex) eq '(?:foo)') { }
154 and not worry about undefined values.
171 if ( re = get_re_arg( aTHX_ sv, 0, 0) ) /* assign deliberate */
175 if (re->anchored_substr) {
176 an = newSVsv(re->anchored_substr);
177 } else if (re->anchored_utf8) {
178 an = newSVsv(re->anchored_utf8);
180 if (re->float_substr) {
181 fl = newSVsv(re->float_substr);
182 } else if (re->float_utf8) {
183 fl = newSVsv(re->float_utf8);