Merge the install and uninstall routines.

[p5sagit/p5-mst-13.2.git] / ext / re / re.xs

#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"

START_EXTERN_C

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);

END_EXTERN_C

#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(pTHX_ unsigned int new_state)
{
    dMY_CXT;
    if(new_state == MY_CXT.x_state)
	return;

    if (new_state) {
	PL_colorset = 0;	/* Allow reinspection of ENV. */
	PL_regexecp = &my_regexec;
	PL_regcompp = &my_regcomp;
	PL_regint_start = &my_re_intuit_start;
	PL_regint_string = &my_re_intuit_string;
	PL_regfree = &my_regfree;
	oldflag = PL_debug & DEBUG_r_FLAG;
	PL_debug |= DEBUG_r_FLAG;
    } else {
	PL_regexecp = Perl_regexec_flags;
	PL_regcompp = Perl_pregcomp;
	PL_regint_start = Perl_re_intuit_start;
	PL_regint_string = Perl_re_intuit_string;
	PL_regfree = Perl_pregfree;

	if (!oldflag)
	    PL_debug &= ~DEBUG_r_FLAG;
    }

    MY_CXT.x_state = new_state;
}

MODULE = re	PACKAGE = re

BOOT:
{
   MY_CXT_INIT;
}


void
install(new_state)
  unsigned int new_state;
  CODE:
    install(aTHX_ new_state);