+#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"
-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));
+START_EXTERN_C
-static int oldfl;
+extern regexp* my_regcomp (pTHX_ char* exp, char* xend, PMOP* pm);
+extern I32 my_regexec (pTHX_ regexp* prog, char* stringarg, char* strend,
+ char* strbeg, I32 minend, SV* screamer,
+ void* data, U32 flags);
+extern void my_regfree (pTHX_ struct regexp* r);
+extern char* my_re_intuit_start (pTHX_ regexp *prog, SV *sv, char *strpos,
+ char *strend, U32 flags,
+ struct re_scream_pos_data_s *data);
+extern SV* my_re_intuit_string (pTHX_ regexp *prog);
-#define R_DB 512
+END_EXTERN_C
-static void
-deinstall(void)
-{
- regexecp = ®exec_flags;
- regcompp = &pregcomp;
- if (!oldfl)
- debug &= ~R_DB;
-}
+/* engine details need to be paired - non debugging, debuggin */
+#define NEEDS_DEBUGGING 0x01
+struct regexp_engine {
+ regexp* (*regcomp) (pTHX_ char* exp, char* xend, PMOP* pm);
+ I32 (*regexec) (pTHX_ regexp* prog, char* stringarg, char* strend,
+ char* strbeg, I32 minend, SV* screamer,
+ void* data, U32 flags);
+ char* (*re_intuit_start) (pTHX_ regexp *prog, SV *sv, char *strpos,
+ char *strend, U32 flags,
+ struct re_scream_pos_data_s *data);
+ SV* (*re_intuit_string) (pTHX_ regexp *prog);
+ void (*regfree) (pTHX_ struct regexp* r);
+};
+
+struct regexp_engine engines[] = {
+ { Perl_pregcomp, Perl_regexec_flags, Perl_re_intuit_start,
+ Perl_re_intuit_string, Perl_pregfree },
+ { my_regcomp, my_regexec, my_re_intuit_start, my_re_intuit_string,
+ my_regfree }
+};
+
+#define MY_CXT_KEY "re::_guts" XS_VERSION
+
+typedef struct {
+ int x_oldflag; /* debug flag */
+ unsigned int x_state;
+} my_cxt_t;
+
+START_MY_CXT
+
+#define oldflag (MY_CXT.x_oldflag)
static void
-install(void)
+install(pTHX_ unsigned int new_state)
{
- regexecp = &my_regexec;
- regcompp = &my_regcomp;
- oldfl = debug & R_DB;
- debug |= R_DB;
+ dMY_CXT;
+ const unsigned int states
+ = sizeof(engines) / sizeof(struct regexp_engine) -1;
+ if(new_state == MY_CXT.x_state)
+ return;
+
+ if (new_state > states) {
+ Perl_croak(aTHX_ "panic: re::install state %u is illegal - max is %u",
+ new_state, states);
+ }
+
+ PL_regexecp = engines[new_state].regexec;
+ PL_regcompp = engines[new_state].regcomp;
+ PL_regint_start = engines[new_state].re_intuit_start;
+ PL_regint_string = engines[new_state].re_intuit_string;
+ PL_regfree = engines[new_state].regfree;
+
+ if (new_state & NEEDS_DEBUGGING) {
+ PL_colorset = 0; /* Allow reinspection of ENV. */
+ if (!(MY_CXT.x_state & NEEDS_DEBUGGING)) {
+ /* Debugging is turned on for the first time. */
+ oldflag = PL_debug & DEBUG_r_FLAG;
+ PL_debug |= DEBUG_r_FLAG;
+ }
+ } else {
+ if (!(MY_CXT.x_state & NEEDS_DEBUGGING)) {
+ if (!oldflag)
+ PL_debug &= ~DEBUG_r_FLAG;
+ }
+ }
+
+ MY_CXT.x_state = new_state;
}
MODULE = re PACKAGE = re
-void
-install()
+BOOT:
+{
+ MY_CXT_INIT;
+}
+
void
-deinstall()
+install(new_state)
+ unsigned int new_state;
+ CODE:
+ install(aTHX_ new_state);