/*

# $Id$

# Copyright (c) 2002 Tim Bunce Ireland

#

# You may distribute under the terms of either the GNU General Public

# License or the Artistic License, as specified in the Perl README file.

*/

/* This is really just a workaround for SUPER:: not working right for XS code.

* It would be better if we setup perl's context so SUPER:: did the right thing

* (borrowing the relevant magic from pp_entersub in perl pp_hot.c).

* Then we could just use call_method("SUPER::foo") instead.

* XXX remember to call SPAGAIN in the calling code after calling this!

*/

static SV *

dbixst_bounce_method(char *methname, int params)

{

dTHX;

/* XXX this 'magic' undoes the dMARK embedded in the dXSARGS of our caller */

/* so that the dXSARGS below can set things up as they were for our caller */

void *xxx = PL_markstack_ptr++;

dXSARGS; /* declares sp, ax, mark, items */

int i;

SV *sv;

int debug = 0;

D_imp_xxh(ST(0));

if (debug >= 3) {

PerlIO_printf(DBIc_LOGPIO(imp_xxh),

" -> %s (trampoline call with %d (%ld) params)\n", methname, params, (long)items);

PERL_UNUSED_VAR(xxx);

}

EXTEND(SP, params);

PUSHMARK(SP);

for (i=0; i < params; ++i) {

sv = (i >= items) ? &PL_sv_undef : ST(i);

PUSHs(sv);

}

PUTBACK;

i = call_method(methname, G_SCALAR);

SPAGAIN;

sv = (i) ? POPs : &PL_sv_undef;

PUTBACK;

if (debug >= 3)

PerlIO_printf(DBIc_LOGPIO(imp_xxh),

" <- %s= %s (trampoline call return)\n", methname, neatsvpv(sv,0));

return sv;

}

static int

dbdxst_bind_params(SV *sth, imp_sth_t *imp_sth, I32 items, I32 ax)

{

/* Handle binding supplied values to placeholders. */

/* items = one greater than the number of params */

/* ax = ax from calling sub, maybe adjusted to match items */

dTHX;

int i;

SV *idx;

if (items-1 != DBIc_NUM_PARAMS(imp_sth)

&& DBIc_NUM_PARAMS(imp_sth) != DBIc_NUM_PARAMS_AT_EXECUTE

) {

char errmsg[99];

/* clear any previous ParamValues before error is generated */

SV **svp = hv_fetch((HV*)DBIc_MY_H(imp_sth),"ParamValues",11,FALSE);

if (svp && SvROK(*svp) && SvTYPE(SvRV(*svp)) == SVt_PVHV) {

HV *hv = (HV*)SvRV(*svp);

hv_clear(hv);

}

sprintf(errmsg,"called with %d bind variables when %d are needed",

(int)items-1, DBIc_NUM_PARAMS(imp_sth));

DBIh_SET_ERR_CHAR(sth, (imp_xxh_t*)imp_sth, "-1", -1, errmsg, Nullch, Nullch);

return 0;

}

idx = sv_2mortal(newSViv(0));

for(i=1; i < items ; ++i) {

SV* value = ST(i);

if (SvGMAGICAL(value))

mg_get(value); /* trigger magic to FETCH the value */

sv_setiv(idx, i);

if (!dbd_bind_ph(sth, imp_sth, idx, value, 0, Nullsv, FALSE, 0)) {

return 0; /* dbd_bind_ph already registered error */

}

}

return 1;

}

#ifndef dbd_fetchall_arrayref

static SV *

dbdxst_fetchall_arrayref(SV *sth, SV *slice, SV *batch_row_count)

{

dTHX;

D_imp_sth(sth);

SV *rows_rvav;

if (SvOK(slice)) { /* should never get here */

char errmsg[99];

sprintf(errmsg,"slice param not supported by XS version of fetchall_arrayref");

DBIh_SET_ERR_CHAR(sth, (imp_xxh_t*)imp_sth, "-1", -1, errmsg, Nullch, Nullch);

return &PL_sv_undef;

}

else {

IV maxrows = SvOK(batch_row_count) ? SvIV(batch_row_count) : -1;

AV *fetched_av;

AV *rows_av = newAV();

if ( !DBIc_ACTIVE(imp_sth) && maxrows>0 ) {

/* to simplify application logic we return undef without an error */

/* if we've fetched all the rows and called with a batch_row_count */

return &PL_sv_undef;

}

av_extend(rows_av, (maxrows>0) ? maxrows : 31);

while ( (maxrows < 0 || maxrows-- > 0)

&& (fetched_av = dbd_st_fetch(sth, imp_sth))

) {

AV *copy_row_av = av_make(AvFILL(fetched_av)+1, AvARRAY(fetched_av));

av_push(rows_av, newRV_noinc((SV*)copy_row_av));

}

rows_rvav = sv_2mortal(newRV_noinc((SV *)rows_av));

}

return rows_rvav;

}

#endif