START_EXTERN_C
-extern REGEXP* my_re_compile (pTHX_ const SV * const pattern, const U32 pm_flags);
+extern REGEXP* my_re_compile (pTHX_ SV * const pattern, const U32 pm_flags);
extern I32 my_regexec (pTHX_ REGEXP * const prog, char* stringarg, char* strend,
char* strbeg, I32 minend, SV* screamer,
void* data, U32 flags);
PL_colorset = 0; /* Allow reinspection of ENV. */
/* PL_debug |= DEBUG_r_FLAG; */
XPUSHs(sv_2mortal(newSViv(PTR2IV(&my_reg_engine))));
-
-
-void
-regexp_pattern(sv)
- SV * sv
-PROTOTYPE: $
-PREINIT:
- REGEXP *re;
-PPCODE:
-{
- /*
- Checks if a reference is a regex or not. If the parameter is
- not a ref, or is not the result of a qr// then returns false
- in scalar context and an empty list in list context.
- Otherwise in list context it returns the pattern and the
- modifiers, in scalar context it returns the pattern just as it
- would if the qr// was stringified normally, regardless as
- to the class of the variable and any strigification overloads
- on the object.
- */
-
- if ((re = SvRX(sv))) /* assign deliberate */
- {
- /* Housten, we have a regex! */
- SV *pattern;
- STRLEN patlen = 0;
- STRLEN left = 0;
- char reflags[6];
-
- if ( GIMME_V == G_ARRAY ) {
- /*
- we are in list context so stringify
- the modifiers that apply. We ignore "negative
- modifiers" in this scenario.
- */
-
- const char *fptr = INT_PAT_MODS;
- char ch;
- U16 match_flags = (U16)((RX_EXTFLAGS(re) & PMf_COMPILETIME)
- >> RXf_PMf_STD_PMMOD_SHIFT);
-
- while((ch = *fptr++)) {
- if(match_flags & 1) {
- reflags[left++] = ch;
- }
- match_flags >>= 1;
- }
-
- pattern = sv_2mortal(newSVpvn(RX_PRECOMP(re),RX_PRELEN(re)));
- if (RX_EXTFLAGS(re) & RXf_UTF8) SvUTF8_on(pattern);
-
- /* return the pattern and the modifiers */
- XPUSHs(pattern);
- XPUSHs(sv_2mortal(newSVpvn(reflags,left)));
- XSRETURN(2);
- } else {
- /* Scalar, so use the string that Perl would return */
- /* return the pattern in (?msix:..) format */
- pattern = sv_2mortal(newSVpvn(RX_WRAPPED(re),RX_WRAPLEN(re)));
- if (RX_EXTFLAGS(re) & RXf_UTF8)
- SvUTF8_on(pattern);
- XPUSHs(pattern);
- XSRETURN(1);
- }
- } else {
- /* It ain't a regexp folks */
- if ( GIMME_V == G_ARRAY ) {
- /* return the empty list */
- XSRETURN_UNDEF;
- } else {
- /* Because of the (?:..) wrapping involved in a
- stringified pattern it is impossible to get a
- result for a real regexp that would evaluate to
- false. Therefore we can return PL_sv_no to signify
- that the object is not a regex, this means that one
- can say
-
- if (regex($might_be_a_regex) eq '(?:foo)') { }
-
- and not worry about undefined values.
- */
- XSRETURN_NO;
- }
- }
- /* NOT-REACHED */
-}
-
void
regmust(sv)