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#include "EXTERN.h"
#include "perl.h"
#include "XSUB.h"
#include "ppport.h"
#include "hook_op_check_smartmatch.h"
STATIC OP*
smartmatch_cb(pTHX_ OP *o, void *user_data)
{
OP *left, *right, *cb_op, *list, *new;
SV **cb;
cb = hv_fetchs(GvHV(PL_hintgv), "smartmatch_cb", 0);
if (!cb) {
return o;
}
left = cBINOPo->op_first;
right = left->op_sibling;
o->op_flags &= ~OPf_KIDS;
op_free(o);
cb_op = newCVREF(0, newSVOP(OP_CONST, 0, newSVsv(*cb)));
list = newLISTOP(OP_LIST, 0, left, right);
new = newUNOP(OP_ENTERSUB, OPf_STACKED,
op_append_elem(OP_LIST, list, cb_op));
return new;
}
UV
hook_op_check_smartmatch()
{
return hook_op_check(OP_SMARTMATCH, smartmatch_cb, NULL);
}
MODULE = smartmatch PACKAGE = smartmatch
PROTOTYPES: DISABLE
BOOT:
hook_op_check_smartmatch();
void
register (cb)
SV *cb;
CODE:
if (!SvROK(cb) || SvTYPE(SvRV(cb)) != SVt_PVCV) {
croak("not a coderef");
}
PL_hints |= HINT_LOCALIZE_HH;
gv_HVadd(PL_hintgv);
SvREFCNT_inc(cb);
if (!hv_stores(GvHV(PL_hintgv), "smartmatch_cb", cb)) {
SvREFCNT_dec(cb);
croak("couldn't store the callback");
}
void
unregister ()
CODE:
PL_hints |= HINT_LOCALIZE_HH;
gv_HVadd(PL_hintgv);
hv_delete(GvHV(PL_hintgv), "smartmatch_cb", 13, G_DISCARD);
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