-/* We need access to debugger hooks */
-#ifndef DEBUGGING
+#if defined(PERL_EXT_RE_DEBUG) && !defined(DEBUGGING)
# define DEBUGGING
#endif
+#define PERL_NO_GET_CONTEXT
#include "EXTERN.h"
#include "perl.h"
#include "XSUB.h"
+#include "re_comp.h"
-extern regexp* my_regcomp _((char* exp, char* xend, PMOP* pm));
-extern I32 my_regexec _((regexp* prog, char* stringarg, char* strend,
- char* strbeg, I32 minend, SV* screamer,
- void* data, U32 flags));
-static int oldfl;
+START_EXTERN_C
-#define R_DB 512
+extern REGEXP* my_re_compile (pTHX_ const 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);
-static void
-deinstall(void)
-{
- dTHR;
- PL_regexecp = ®exec_flags;
- PL_regcompp = &pregcomp;
- if (!oldfl)
- PL_debug &= ~R_DB;
-}
+extern char* my_re_intuit_start (pTHX_ REGEXP * const prog, SV *sv, char *strpos,
+ char *strend, const U32 flags,
+ struct re_scream_pos_data_s *data);
+extern SV* my_re_intuit_string (pTHX_ REGEXP * const prog);
-static void
-install(void)
-{
- dTHR;
- PL_regexecp = &my_regexec;
- PL_regcompp = &my_regcomp;
- oldfl = PL_debug & R_DB;
- PL_debug |= R_DB;
-}
+extern void my_regfree (pTHX_ REGEXP * const r);
+
+extern void my_reg_numbered_buff_fetch(pTHX_ REGEXP * const rx, const I32 paren,
+ SV * const usesv);
+extern void my_reg_numbered_buff_store(pTHX_ REGEXP * const rx, const I32 paren,
+ SV const * const value);
+extern I32 my_reg_numbered_buff_length(pTHX_ REGEXP * const rx,
+ const SV * const sv, const I32 paren);
+
+extern SV* my_reg_named_buff(pTHX_ REGEXP * const, SV * const, SV * const,
+ const U32);
+extern SV* my_reg_named_buff_iter(pTHX_ REGEXP * const rx,
+ const SV * const lastkey, const U32 flags);
+
+extern SV* my_reg_qr_package(pTHX_ REGEXP * const rx);
+#if defined(USE_ITHREADS)
+extern void* my_regdupe (pTHX_ REGEXP * const r, CLONE_PARAMS *param);
+#endif
+
+EXTERN_C const struct regexp_engine my_reg_engine;
+
+END_EXTERN_C
+
+const struct regexp_engine my_reg_engine = {
+ my_re_compile,
+ my_regexec,
+ my_re_intuit_start,
+ my_re_intuit_string,
+ my_regfree,
+ my_reg_numbered_buff_fetch,
+ my_reg_numbered_buff_store,
+ my_reg_numbered_buff_length,
+ my_reg_named_buff,
+ my_reg_named_buff_iter,
+ my_reg_qr_package,
+#if defined(USE_ITHREADS)
+ my_regdupe
+#endif
+};
MODULE = re PACKAGE = re
void
install()
+ PPCODE:
+ PL_colorset = 0; /* Allow reinspection of ENV. */
+ /* PL_debug |= DEBUG_r_FLAG; */
+ XPUSHs(sv_2mortal(newSViv(PTR2IV(&my_reg_engine))));
+
void
-deinstall()
+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.
+ */
+
+ char *fptr = INT_PAT_MODS;
+ char ch;
+ U16 match_flags = (U16)((re->extflags & PMf_COMPILETIME) >> 12);
+
+ while((ch = *fptr++)) {
+ if(match_flags & 1) {
+ reflags[left++] = ch;
+ }
+ match_flags >>= 1;
+ }
+
+ pattern = sv_2mortal(newSVpvn(re->precomp,re->prelen));
+ if (re->extflags & 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(re->wrapped,re->wraplen));
+ if (re->extflags & 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)
+ SV * sv
+PROTOTYPE: $
+PREINIT:
+ REGEXP *re;
+PPCODE:
+{
+ if ((re = SvRX(sv))) /* assign deliberate */
+ {
+ SV *an = &PL_sv_no;
+ SV *fl = &PL_sv_no;
+ if (re->anchored_substr) {
+ an = newSVsv(re->anchored_substr);
+ } else if (re->anchored_utf8) {
+ an = newSVsv(re->anchored_utf8);
+ }
+ if (re->float_substr) {
+ fl = newSVsv(re->float_substr);
+ } else if (re->float_utf8) {
+ fl = newSVsv(re->float_utf8);
+ }
+ XPUSHs(an);
+ XPUSHs(fl);
+ XSRETURN(2);
+ }
+ XSRETURN_UNDEF;
+}
+
projects / p5sagit/p5-mst-13.2.git / blobdiff