[p5sagit/p5-mst-13.2.git] / xsutils.c

#include "EXTERN.h"
#define PERL_IN_XSUTILS_C
#include "perl.h"

/*
 * Contributed by Spider Boardman (spider.boardman@orb.nashua.nh.us).
 */

/* package attributes; */
void XS_attributes__warn_reserved(pTHXo_ CV *cv);
void XS_attributes_reftype(pTHXo_ CV *cv);
void XS_attributes__modify_attrs(pTHXo_ CV *cv);
void XS_attributes__guess_stash(pTHXo_ CV *cv);
void XS_attributes__fetch_attrs(pTHXo_ CV *cv);
void XS_attributes_bootstrap(pTHXo_ CV *cv);


/*
 * Note that only ${pkg}::bootstrap definitions should go here.
 * This helps keep down the start-up time, which is especially
 * relevant for users who don't invoke any features which are
 * (partially) implemented here.
 *
 * The various bootstrap definitions can take care of doing
 * package-specific newXS() calls.  Since the layout of the
 * bundled *.pm files is in a version-specific directory,
 * version checks in these bootstrap calls are optional.
 */

void
Perl_boot_core_xsutils(pTHX)
{
    char *file = __FILE__;

    newXS("attributes::bootstrap",	XS_attributes_bootstrap,	file);
}

#include "XSUB.h"

static int
modify_SV_attributes(pTHXo_ SV *sv, SV **retlist, SV **attrlist, int numattrs)
{
    SV *attr;
    char *name;
    STRLEN len;
    bool negated;
    int nret;

    for (nret = 0 ; numattrs && (attr = *attrlist++); numattrs--) {
	name = SvPV(attr, len);
	if (negated = (*name == '-')) {
	    name++;
	    len--;
	}
	switch (SvTYPE(sv)) {
	case SVt_PVCV:
	    switch ((int)len) {
	    case 6:
		switch (*name) {
		case 'l':
#ifdef CVf_LVALUE
		    if (strEQ(name, "lvalue")) {
			if (negated)
			    CvFLAGS((CV*)sv) &= ~CVf_LVALUE;
			else
			    CvFLAGS((CV*)sv) |= CVf_LVALUE;
			continue;
		    }
#endif /* defined CVf_LVALUE */
		    if (strEQ(name, "locked")) {
			if (negated)
			    CvFLAGS((CV*)sv) &= ~CVf_LOCKED;
			else
			    CvFLAGS((CV*)sv) |= CVf_LOCKED;
			continue;
		    }
		    break;
		case 'm':
		    if (strEQ(name, "method")) {
			if (negated)
			    CvFLAGS((CV*)sv) &= ~CVf_METHOD;
			else
			    CvFLAGS((CV*)sv) |= CVf_METHOD;
			continue;
		    }
		    break;
		}
		break;
	    }
	    break;
	default:
	    /* nothing, yet */
	    break;
	}
	/* anything recognized had a 'continue' above */
	*retlist++ = attr;
	nret++;
    }

    return nret;
}


/* package attributes; */

XS(XS_attributes_bootstrap)
{
    dXSARGS;
    char *file = __FILE__;

    newXSproto("attributes::_warn_reserved", XS_attributes__warn_reserved, file, "");
    newXS("attributes::_modify_attrs",	XS_attributes__modify_attrs,	file);
    newXSproto("attributes::_guess_stash", XS_attributes__guess_stash, file, "$");
    newXSproto("attributes::_fetch_attrs", XS_attributes__fetch_attrs, file, "$");
    newXSproto("attributes::reftype",	XS_attributes_reftype,	file, "$");

    XSRETURN(0);
}

XS(XS_attributes__modify_attrs)
{
    dXSARGS;
    SV *rv, *sv;

    if (items < 1) {
usage:
	Perl_croak(aTHX_
		   "Usage: attributes::_modify_attrs $reference, @attributes");
    }

    rv = ST(0);
    if (!(SvOK(rv) && SvROK(rv)))
	goto usage;
    sv = SvRV(rv);
    if (items > 1)
	XSRETURN(modify_SV_attributes(aTHXo_ sv, &ST(0), &ST(1), items-1));

    XSRETURN(0);
}

XS(XS_attributes__fetch_attrs)
{
    dXSARGS;
    SV *rv, *sv;
    cv_flags_t cvflags;

    if (items != 1) {
usage:
	Perl_croak(aTHX_
		   "Usage: attributes::_fetch_attrs $reference");
    }

    rv = ST(0);
    SP -= items;
    if (!(SvOK(rv) && SvROK(rv)))
	goto usage;
    sv = SvRV(rv);

    switch (SvTYPE(sv)) {
    case SVt_PVCV:
	cvflags = CvFLAGS((CV*)sv);
	if (cvflags & CVf_LOCKED)
	    XPUSHs(sv_2mortal(newSVpvn("locked", 6)));
#ifdef CVf_LVALUE
	if (cvflags & CVf_LVALUE)
	    XPUSHs(sv_2mortal(newSVpvn("lvalue", 6)));
#endif
	if (cvflags & CVf_METHOD)
	    XPUSHs(sv_2mortal(newSVpvn("method", 6)));
	break;
    default:
	break;
    }

    PUTBACK;
}

XS(XS_attributes__guess_stash)
{
    dXSARGS;
    SV *rv, *sv;
#ifdef dXSTARGET
    dXSTARGET;
#else
    SV * TARG = sv_newmortal();
#endif

    if (items != 1) {
usage:
	Perl_croak(aTHX_
		   "Usage: attributes::_guess_stash $reference");
    }

    rv = ST(0);
    ST(0) = TARG;
    if (!(SvOK(rv) && SvROK(rv)))
	goto usage;
    sv = SvRV(rv);

    if (SvOBJECT(sv))
	sv_setpv(TARG, HvNAME(SvSTASH(sv)));
#if 0	/* this was probably a bad idea */
    else if (SvPADMY(sv))
	sv_setsv(TARG, &PL_sv_no);	/* unblessed lexical */
#endif
    else {
	HV *stash = Nullhv;
	switch (SvTYPE(sv)) {
	case SVt_PVCV:
	    if (CvGV(sv) && isGV(CvGV(sv)) && GvSTASH(CvGV(sv)) &&
			    HvNAME(GvSTASH(CvGV(sv))))
		stash = GvSTASH(CvGV(sv));
	    else if (/* !CvANON(sv) && */ CvSTASH(sv) && HvNAME(CvSTASH(sv)))
		stash = CvSTASH(sv);
	    break;
	case SVt_PVMG:
	    if (!(SvFAKE(sv) && SvTIED_mg(sv, '*')))
		break;
	    /*FALLTHROUGH*/
	case SVt_PVGV:
	    if (GvGP(sv) && GvESTASH((GV*)sv) && HvNAME(GvESTASH((GV*)sv)))
		stash = GvESTASH((GV*)sv);
	    break;
	default:
	    break;
	}
	if (stash)
	    sv_setpv(TARG, HvNAME(stash));
    }

#ifdef dXSTARGET
    SvSETMAGIC(TARG);
#endif
    XSRETURN(1);
}

XS(XS_attributes_reftype)
{
    dXSARGS;
    SV *rv, *sv;
#ifdef dXSTARGET
    dXSTARGET;
#else
    SV * TARG = sv_newmortal();
#endif

    if (items != 1) {
usage:
	Perl_croak(aTHX_
		   "Usage: attributes::reftype $reference");
    }

    rv = ST(0);
    ST(0) = TARG;
    if (!SvOK(rv)) {
	ST(0) = &PL_sv_no;
	XSRETURN(1);
    }
    if (!SvROK(rv))
	goto usage;
    sv = SvRV(rv);
    sv_setpv(TARG, sv_reftype(sv, 0));
#ifdef dXSTARGET
    SvSETMAGIC(TARG);
#endif

    XSRETURN(1);
}

XS(XS_attributes__warn_reserved)
{
    dXSARGS;
    SV *rv, *sv;
#ifdef dXSTARGET
    dXSTARGET;
#else
    SV * TARG = sv_newmortal();
#endif

    if (items != 0) {
	Perl_croak(aTHX_
		   "Usage: attributes::_warn_reserved ()");
    }

    EXTEND(SP,1);
    ST(0) = TARG;
    sv_setiv(TARG, ckWARN(WARN_RESERVED) != 0);
#ifdef dXSTARGET
    SvSETMAGIC(TARG);
#endif

    XSRETURN(1);
}
Commit	Line	Data
09bef843	1	#include "EXTERN.h"
	2	#define PERL_IN_XSUTILS_C
	3	#include "perl.h"
	4
	5	/*
	6	* Contributed by Spider Boardman (spider.boardman@orb.nashua.nh.us).
	7	*/
	8
349fd7b7	9	/* package attributes; */
	10	void XS_attributes__warn_reserved(pTHXo_ CV *cv);
	11	void XS_attributes_reftype(pTHXo_ CV *cv);
	12	void XS_attributes__modify_attrs(pTHXo_ CV *cv);
	13	void XS_attributes__guess_stash(pTHXo_ CV *cv);
	14	void XS_attributes__fetch_attrs(pTHXo_ CV *cv);
	15	void XS_attributes_bootstrap(pTHXo_ CV *cv);
	16
	17
	18	/*
	19	* Note that only ${pkg}::bootstrap definitions should go here.
	20	* This helps keep down the start-up time, which is especially
	21	* relevant for users who don't invoke any features which are
	22	* (partially) implemented here.
	23	*
	24	* The various bootstrap definitions can take care of doing
	25	* package-specific newXS() calls. Since the layout of the
6a34af38	26	* bundled *.pm files is in a version-specific directory,
349fd7b7	27	* version checks in these bootstrap calls are optional.
	28	*/
	29
	30	void
	31	Perl_boot_core_xsutils(pTHX)
	32	{
	33	char *file = __FILE__;
	34
	35	newXS("attributes::bootstrap", XS_attributes_bootstrap, file);
	36	}
	37
349fd7b7	38	#include "XSUB.h"
	39
	40	static int
	41	modify_SV_attributes(pTHXo_ SV sv, SV retlist, SV *attrlist, int numattrs)
09bef843	42	{
	43	SV *attr;
	44	char *name;
	45	STRLEN len;
	46	bool negated;
	47	int nret;
	48
	49	for (nret = 0 ; numattrs && (attr = *attrlist++); numattrs--) {
	50	name = SvPV(attr, len);
	51	if (negated = (*name == '-')) {
	52	name++;
	53	len--;
	54	}
	55	switch (SvTYPE(sv)) {
	56	case SVt_PVCV:
	57	switch ((int)len) {
	58	case 6:
	59	switch (*name) {
	60	case 'l':
	61	#ifdef CVf_LVALUE
	62	if (strEQ(name, "lvalue")) {
	63	if (negated)
	64	CvFLAGS((CV*)sv) &= ~CVf_LVALUE;
	65	else
	66	CvFLAGS((CV*)sv) \|= CVf_LVALUE;
	67	continue;
	68	}
	69	#endif /* defined CVf_LVALUE */
	70	if (strEQ(name, "locked")) {
	71	if (negated)
	72	CvFLAGS((CV*)sv) &= ~CVf_LOCKED;
	73	else
	74	CvFLAGS((CV*)sv) \|= CVf_LOCKED;
	75	continue;
	76	}
	77	break;
	78	case 'm':
	79	if (strEQ(name, "method")) {
	80	if (negated)
	81	CvFLAGS((CV*)sv) &= ~CVf_METHOD;
	82	else
	83	CvFLAGS((CV*)sv) \|= CVf_METHOD;
	84	continue;
	85	}
	86	break;
	87	}
	88	break;
	89	}
	90	break;
	91	default:
	92	/* nothing, yet */
	93	break;
	94	}
	95	/* anything recognized had a 'continue' above */
	96	*retlist++ = attr;
	97	nret++;
	98	}
	99
	100	return nret;
	101	}
	102
	103
09bef843	104
	105	/* package attributes; */
	106
	107	XS(XS_attributes_bootstrap)
	108	{
	109	dXSARGS;
	110	char *file = __FILE__;
	111
	112	newXSproto("attributes::_warn_reserved", XS_attributes__warn_reserved, file, "");
	113	newXS("attributes::_modify_attrs", XS_attributes__modify_attrs, file);
	114	newXSproto("attributes::_guess_stash", XS_attributes__guess_stash, file, "$");
	115	newXSproto("attributes::_fetch_attrs", XS_attributes__fetch_attrs, file, "$");
	116	newXSproto("attributes::reftype", XS_attributes_reftype, file, "$");
	117
	118	XSRETURN(0);
	119	}
	120
	121	XS(XS_attributes__modify_attrs)
	122	{
	123	dXSARGS;
	124	SV rv, sv;
	125
	126	if (items < 1) {
	127	usage:
	128	Perl_croak(aTHX_
	129	"Usage: attributes::_modify_attrs $reference, @attributes");
	130	}
	131
	132	rv = ST(0);
	133	if (!(SvOK(rv) && SvROK(rv)))
	134	goto usage;
	135	sv = SvRV(rv);
	136	if (items > 1)
349fd7b7	137	XSRETURN(modify_SV_attributes(aTHXo_ sv, &ST(0), &ST(1), items-1));
09bef843	138
	139	XSRETURN(0);
	140	}
	141
	142	XS(XS_attributes__fetch_attrs)
	143	{
	144	dXSARGS;
	145	SV rv, sv;
	146	cv_flags_t cvflags;
	147
	148	if (items != 1) {
	149	usage:
	150	Perl_croak(aTHX_
	151	"Usage: attributes::_fetch_attrs $reference");
	152	}
	153
	154	rv = ST(0);
	155	SP -= items;
	156	if (!(SvOK(rv) && SvROK(rv)))
	157	goto usage;
	158	sv = SvRV(rv);
	159
	160	switch (SvTYPE(sv)) {
	161	case SVt_PVCV:
	162	cvflags = CvFLAGS((CV*)sv);
	163	if (cvflags & CVf_LOCKED)
	164	XPUSHs(sv_2mortal(newSVpvn("locked", 6)));
	165	#ifdef CVf_LVALUE
	166	if (cvflags & CVf_LVALUE)
	167	XPUSHs(sv_2mortal(newSVpvn("lvalue", 6)));
	168	#endif
	169	if (cvflags & CVf_METHOD)
	170	XPUSHs(sv_2mortal(newSVpvn("method", 6)));
	171	break;
	172	default:
	173	break;
	174	}
	175
	176	PUTBACK;
	177	}
	178
	179	XS(XS_attributes__guess_stash)
	180	{
	181	dXSARGS;
	182	SV rv, sv;
	183	#ifdef dXSTARGET
	184	dXSTARGET;
	185	#else
	186	SV * TARG = sv_newmortal();
	187	#endif
	188
	189	if (items != 1) {
	190	usage:
	191	Perl_croak(aTHX_
	192	"Usage: attributes::_guess_stash $reference");
	193	}
	194
	195	rv = ST(0);
	196	ST(0) = TARG;
	197	if (!(SvOK(rv) && SvROK(rv)))
	198	goto usage;
	199	sv = SvRV(rv);
	200
	201	if (SvOBJECT(sv))
202	sv_setpv(TARG, HvNAME(SvSTASH(sv)));
203	#if 0 /* this was probably a bad idea */
204	else if (SvPADMY(sv))
205	sv_setsv(TARG, &PL_sv_no); /* unblessed lexical */
206	#endif
207	else {
208	HV *stash = Nullhv;
209	switch (SvTYPE(sv)) {
210	case SVt_PVCV:
211	if (CvGV(sv) && isGV(CvGV(sv)) && GvSTASH(CvGV(sv)) &&
212	HvNAME(GvSTASH(CvGV(sv))))
213	stash = GvSTASH(CvGV(sv));
214	else if (/* !CvANON(sv) && */ CvSTASH(sv) && HvNAME(CvSTASH(sv)))
215	stash = CvSTASH(sv);
216	break;
217	case SVt_PVMG:
218	if (!(SvFAKE(sv) && SvTIED_mg(sv, '*')))
219	break;
220	/FALLTHROUGH/
221	case SVt_PVGV:
222	if (GvGP(sv) && GvESTASH((GV)sv) && HvNAME(GvESTASH((GV)sv)))
223	stash = GvESTASH((GV*)sv);
224	break;
225	default:
226	break;
227	}
228	if (stash)
229	sv_setpv(TARG, HvNAME(stash));
230	}
231
232	#ifdef dXSTARGET
233	SvSETMAGIC(TARG);
234	#endif
235	XSRETURN(1);
236	}
237
238	XS(XS_attributes_reftype)
239	{
240	dXSARGS;
241	SV rv, sv;
242	#ifdef dXSTARGET
243	dXSTARGET;
244	#else
245	SV * TARG = sv_newmortal();
246	#endif
247
248	if (items != 1) {
249	usage:
250	Perl_croak(aTHX_
251	"Usage: attributes::reftype $reference");
252	}
253
254	rv = ST(0);
255	ST(0) = TARG;
256	if (!SvOK(rv)) {
257	ST(0) = &PL_sv_no;
258	XSRETURN(1);
259	}
260	if (!SvROK(rv))
261	goto usage;
262	sv = SvRV(rv);
263	sv_setpv(TARG, sv_reftype(sv, 0));
264	#ifdef dXSTARGET
265	SvSETMAGIC(TARG);
266	#endif
267
268	XSRETURN(1);
269	}
270
271	XS(XS_attributes__warn_reserved)
272	{
273	dXSARGS;
274	SV rv, sv;
275	#ifdef dXSTARGET
276	dXSTARGET;
277	#else
278	SV * TARG = sv_newmortal();
279	#endif
280
281	if (items != 0) {
282	Perl_croak(aTHX_
283	"Usage: attributes::_warn_reserved ()");
284	}
285
286	EXTEND(SP,1);
287	ST(0) = TARG;
288	sv_setiv(TARG, ckWARN(WARN_RESERVED) != 0);
289	#ifdef dXSTARGET
290	SvSETMAGIC(TARG);
291	#endif
292
293	XSRETURN(1);
294	}
295