[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;
		case 's':
		    if (strEQ(name, "shared")) {
			if (negated)
			    GvSHARED_off(CvGV((CV*)sv));
			else
			    GvSHARED_on(CvGV((CV*)sv));
			continue;
		    }
		    break;
		}
		break;
	    }
	    break;
	default:
	    switch ((int)len) {
              case 6:
		switch (*name) {
                  case 's':
		    if (strEQ(name, "shared")) {
                        /* toke.c has already marked as GvSHARED */
                        continue;
                    }
                }
            }
	    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)));
        if (GvSHARED(CvGV((CV*)sv)))
	    XPUSHs(sv_2mortal(newSVpvn("shared", 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 (SvGMAGICAL(rv))
	mg_get(rv);
    if (!(SvOK(rv) && 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;
#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);
155aba94	51	if ((negated = (*name == '-'))) {
09bef843	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;
0256094b	87	case 's':
	88	if (strEQ(name, "shared")) {
	89	if (negated)
	90	GvSHARED_off(CvGV((CV*)sv));
	91	else
	92	GvSHARED_on(CvGV((CV*)sv));
	93	continue;
	94	}
	95	break;
09bef843	96	}
	97	break;
	98	}
	99	break;
	100	default:
0256094b	101	switch ((int)len) {
	102	case 6:
	103	switch (*name) {
	104	case 's':
	105	if (strEQ(name, "shared")) {
	106	/* toke.c has already marked as GvSHARED */
	107	continue;
	108	}
	109	}
	110	}
09bef843	111	break;
	112	}
	113	/* anything recognized had a 'continue' above */
	114	*retlist++ = attr;
	115	nret++;
	116	}
	117
	118	return nret;
	119	}
	120
	121
09bef843	122
	123	/* package attributes; */
	124
	125	XS(XS_attributes_bootstrap)
	126	{
	127	dXSARGS;
	128	char *file = __FILE__;
	129
	130	newXSproto("attributes::_warn_reserved", XS_attributes__warn_reserved, file, "");
	131	newXS("attributes::_modify_attrs", XS_attributes__modify_attrs, file);
	132	newXSproto("attributes::_guess_stash", XS_attributes__guess_stash, file, "$");
	133	newXSproto("attributes::_fetch_attrs", XS_attributes__fetch_attrs, file, "$");
	134	newXSproto("attributes::reftype", XS_attributes_reftype, file, "$");
	135
	136	XSRETURN(0);
	137	}
	138
	139	XS(XS_attributes__modify_attrs)
	140	{
	141	dXSARGS;
	142	SV rv, sv;
	143
	144	if (items < 1) {
	145	usage:
	146	Perl_croak(aTHX_
	147	"Usage: attributes::_modify_attrs $reference, @attributes");
	148	}
	149
	150	rv = ST(0);
	151	if (!(SvOK(rv) && SvROK(rv)))
	152	goto usage;
	153	sv = SvRV(rv);
	154	if (items > 1)
349fd7b7	155	XSRETURN(modify_SV_attributes(aTHXo_ sv, &ST(0), &ST(1), items-1));
09bef843	156
	157	XSRETURN(0);
	158	}
	159
	160	XS(XS_attributes__fetch_attrs)
	161	{
	162	dXSARGS;
	163	SV rv, sv;
	164	cv_flags_t cvflags;
	165
	166	if (items != 1) {
	167	usage:
	168	Perl_croak(aTHX_
	169	"Usage: attributes::_fetch_attrs $reference");
	170	}
	171
	172	rv = ST(0);
	173	SP -= items;
	174	if (!(SvOK(rv) && SvROK(rv)))
	175	goto usage;
	176	sv = SvRV(rv);
	177
	178	switch (SvTYPE(sv)) {
	179	case SVt_PVCV:
	180	cvflags = CvFLAGS((CV*)sv);
	181	if (cvflags & CVf_LOCKED)
	182	XPUSHs(sv_2mortal(newSVpvn("locked", 6)));
	183	#ifdef CVf_LVALUE
	184	if (cvflags & CVf_LVALUE)
	185	XPUSHs(sv_2mortal(newSVpvn("lvalue", 6)));
	186	#endif
	187	if (cvflags & CVf_METHOD)
	188	XPUSHs(sv_2mortal(newSVpvn("method", 6)));
0256094b	189	if (GvSHARED(CvGV((CV*)sv)))
0256094b	190	XPUSHs(sv_2mortal(newSVpvn("shared", 6)));
09bef843	191	break;
	192	default:
	193	break;
	194	}
	195
	196	PUTBACK;
	197	}
	198
	199	XS(XS_attributes__guess_stash)
	200	{
	201	dXSARGS;
	202	SV rv, sv;
	203	#ifdef dXSTARGET
	204	dXSTARGET;
	205	#else
	206	SV * TARG = sv_newmortal();
	207	#endif
	208
	209	if (items != 1) {
	210	usage:
	211	Perl_croak(aTHX_
	212	"Usage: attributes::_guess_stash $reference");
	213	}
	214
	215	rv = ST(0);
	216	ST(0) = TARG;
	217	if (!(SvOK(rv) && SvROK(rv)))
	218	goto usage;
	219	sv = SvRV(rv);
	220
	221	if (SvOBJECT(sv))
	222	sv_setpv(TARG, HvNAME(SvSTASH(sv)));
	223	#if 0 /* this was probably a bad idea */
	224	else if (SvPADMY(sv))
	225	sv_setsv(TARG, &PL_sv_no); /* unblessed lexical */
	226	#endif
	227	else {
	228	HV *stash = Nullhv;
	229	switch (SvTYPE(sv)) {
	230	case SVt_PVCV:
	231	if (CvGV(sv) && isGV(CvGV(sv)) && GvSTASH(CvGV(sv)) &&
	232	HvNAME(GvSTASH(CvGV(sv))))
	233	stash = GvSTASH(CvGV(sv));
	234	else if (/* !CvANON(sv) && */ CvSTASH(sv) && HvNAME(CvSTASH(sv)))
	235	stash = CvSTASH(sv);
	236	break;
	237	case SVt_PVMG:
	238	if (!(SvFAKE(sv) && SvTIED_mg(sv, '*')))
	239	break;
	240	/FALLTHROUGH/
	241	case SVt_PVGV:
	242	if (GvGP(sv) && GvESTASH((GV)sv) && HvNAME(GvESTASH((GV)sv)))
	243	stash = GvESTASH((GV*)sv);
	244	break;
	245	default:
	246	break;
	247	}
	248	if (stash)
	249	sv_setpv(TARG, HvNAME(stash));
	250	}
	251
	252	#ifdef dXSTARGET
	253	SvSETMAGIC(TARG);
	254	#endif
255	XSRETURN(1);
256	}
257
258	XS(XS_attributes_reftype)
259	{
260	dXSARGS;
261	SV rv, sv;
262	#ifdef dXSTARGET
263	dXSTARGET;
264	#else
265	SV * TARG = sv_newmortal();
266	#endif
267
268	if (items != 1) {
269	usage:
270	Perl_croak(aTHX_
271	"Usage: attributes::reftype $reference");
272	}
273
274	rv = ST(0);
275	ST(0) = TARG;
4694d0ea	276	if (SvGMAGICAL(rv))
4694d0ea	277	mg_get(rv);
121e869f	278	if (!(SvOK(rv) && SvROK(rv)))
09bef843	279	goto usage;
	280	sv = SvRV(rv);
	281	sv_setpv(TARG, sv_reftype(sv, 0));
	282	#ifdef dXSTARGET
	283	SvSETMAGIC(TARG);
	284	#endif
	285
	286	XSRETURN(1);
	287	}
	288
	289	XS(XS_attributes__warn_reserved)
	290	{
	291	dXSARGS;
09bef843	292	#ifdef dXSTARGET
	293	dXSTARGET;
	294	#else
	295	SV * TARG = sv_newmortal();
	296	#endif
	297
	298	if (items != 0) {
	299	Perl_croak(aTHX_
	300	"Usage: attributes::_warn_reserved ()");
	301	}
	302
	303	EXTEND(SP,1);
	304	ST(0) = TARG;
	305	sv_setiv(TARG, ckWARN(WARN_RESERVED) != 0);
	306	#ifdef dXSTARGET
	307	SvSETMAGIC(TARG);
	308	#endif
	309
	310	XSRETURN(1);
	311	}
	312