[perl5.git] / vxs.inc

/* This file is part of the "version" CPAN distribution.  Please avoid
   editing it in the perl core. */

#ifdef PERL_CORE
#  define VXS_CLASS "version"
#else
#  define VXS_CLASS "version::vxs"
#endif

#ifdef VXS_XSUB_DETAILS
#  ifdef PERL_CORE
    {"UNIVERSAL::VERSION", XS_UNIVERSAL_VERSION, NULL},
#  else
    {VXS_CLASS "::_VERSION", XS_UNIVERSAL_VERSION, NULL},
#  endif
    {VXS_CLASS "::()", XS_version_noop, NULL},
    {VXS_CLASS "::new", XS_version_new, NULL},
    {VXS_CLASS "::parse", XS_version_new, NULL},
    {VXS_CLASS "::(\"\"", XS_version_stringify, NULL},
    {VXS_CLASS "::stringify", XS_version_stringify, NULL},
    {VXS_CLASS "::(0+", XS_version_numify, NULL},
    {VXS_CLASS "::numify", XS_version_numify, NULL},
    {VXS_CLASS "::normal", XS_version_normal, NULL},
    {VXS_CLASS "::(cmp", XS_version_vcmp, NULL},
    {VXS_CLASS "::(<=>", XS_version_vcmp, NULL},
#  ifdef PERL_CORE
    {VXS_CLASS "::vcmp", XS_version_vcmp, NULL},
#  else
    {VXS_CLASS "::VCMP", XS_version_vcmp, NULL},
#  endif
    {VXS_CLASS "::(bool", XS_version_boolean, NULL},
    {VXS_CLASS "::boolean", XS_version_boolean, NULL},
    {VXS_CLASS "::(+", XS_version_noop, NULL},
    {VXS_CLASS "::(-", XS_version_noop, NULL},
    {VXS_CLASS "::(*", XS_version_noop, NULL},
    {VXS_CLASS "::(/", XS_version_noop, NULL},
    {VXS_CLASS "::(+=", XS_version_noop, NULL},
    {VXS_CLASS "::(-=", XS_version_noop, NULL},
    {VXS_CLASS "::(*=", XS_version_noop, NULL},
    {VXS_CLASS "::(/=", XS_version_noop, NULL},
    {VXS_CLASS "::(abs", XS_version_noop, NULL},
    {VXS_CLASS "::(nomethod", XS_version_noop, NULL},
    {VXS_CLASS "::noop", XS_version_noop, NULL},
    {VXS_CLASS "::is_alpha", XS_version_is_alpha, NULL},
    {VXS_CLASS "::qv", XS_version_qv, NULL},
    {VXS_CLASS "::declare", XS_version_qv, NULL},
    {VXS_CLASS "::is_qv", XS_version_is_qv, NULL},
#else

#ifndef dVAR
#  define dVAR
#endif

XS(XS_UNIVERSAL_VERSION)
{
    dVAR;
    dXSARGS;
    HV *pkg;
    GV **gvp;
    GV *gv;
    SV *sv;
    const char *undef;
    PERL_UNUSED_ARG(cv);

    if (SvROK(ST(0))) {
        sv = MUTABLE_SV(SvRV(ST(0)));
        if (!SvOBJECT(sv))
            Perl_croak(aTHX_ "Cannot find version of an unblessed reference");
        pkg = SvSTASH(sv);
    }
    else {
        pkg = gv_stashsv(ST(0), 0);
    }

    gvp = pkg ? (GV**)hv_fetchs(pkg, "VERSION", FALSE) : NULL;

    if (gvp && isGV(gv = *gvp) && (sv = GvSV(gv)) && SvOK(sv)) {
        SV * const nsv = sv_newmortal();
        sv_setsv(nsv, sv);
        sv = nsv;
	if ( !sv_isobject(sv) || !sv_derived_from(sv, "version"))
	    upg_version(sv, FALSE);

        undef = NULL;
    }
    else {
        sv = &PL_sv_undef;
        undef = "(undef)";
    }

    if (items > 1) {
	SV *req = ST(1);

	if (undef) {
	    if (pkg) {
		const HEK * const name = HvNAME_HEK(pkg);
		Perl_croak(aTHX_
			   "%"HEKf" does not define $%"HEKf
			   "::VERSION--version check failed",
			   HEKfARG(name), HEKfARG(name));
	    } else {
		Perl_croak(aTHX_
			     "%"SVf" defines neither package nor VERSION--version check failed",
			     SVfARG(ST(0)) );
	    }
	}

	if ( !sv_isobject(req) || !sv_derived_from(req, "version")) {
	    /* req may very well be R/O, so create a new object */
	    req = sv_2mortal( new_version(req) );
	}

	if ( vcmp( req, sv ) > 0 ) {
	    if ( hv_exists(MUTABLE_HV(SvRV(req)), "qv", 2 ) ) {
		Perl_croak(aTHX_ "%"HEKf" version %"SVf" required--"
		       "this is only version %"SVf"",
                       HEKfARG(HvNAME_HEK(pkg)),
		       SVfARG(sv_2mortal(vnormal(req))),
		       SVfARG(sv_2mortal(vnormal(sv))));
	    } else {
		Perl_croak(aTHX_ "%"HEKf" version %"SVf" required--"
		       "this is only version %"SVf,
                       HEKfARG(HvNAME_HEK(pkg)),
		       SVfARG(sv_2mortal(vstringify(req))),
		       SVfARG(sv_2mortal(vstringify(sv))));
	    }
	}
    }

    if ( SvOK(sv) && sv_derived_from(sv, "version") ) {
	ST(0) = sv_2mortal(vstringify(sv));
    } else {
	ST(0) = sv;
    }

    XSRETURN(1);
}

XS(XS_version_new)
{
    dVAR;
    dXSARGS;
    if (items > 3 || items < 1)
	croak_xs_usage(cv, "class, version");
    SP -= items;
    {
        SV *vs = ST(1);
	SV *rv;
        STRLEN len;
        const char *classname;
        U32 flags;

	/* Just in case this is something like a tied hash */
	SvGETMAGIC(vs);

        if ( sv_isobject(ST(0)) ) { /* get the class if called as an object method */
            const HV * stash = SvSTASH(SvRV(ST(0)));
            classname = HvNAME(stash);
            len       = HvNAMELEN(stash);
            flags     = HvNAMEUTF8(stash) ? SVf_UTF8 : 0;
        }
        else {
	    classname = SvPV(ST(0), len);
            flags     = SvUTF8(ST(0));
        }

	if ( items == 1 || ! SvOK(vs) ) { /* no param or explicit undef */
	    /* create empty object */
	    vs = sv_newmortal();
	    sv_setpvs(vs, "0");
	}
	else if ( items == 3 ) {
	    vs = sv_newmortal();
	    Perl_sv_setpvf(aTHX_ vs,"v%s",SvPV_nolen_const(ST(2)));
	}

	rv = new_version(vs);
	if ( strnNE(classname,"version", len) ) /* inherited new() */
	    sv_bless(rv, gv_stashpvn(classname, len, GV_ADD | flags));

	mPUSHs(rv);
	PUTBACK;
	return;
    }
}

XS(XS_version_stringify)
{
     dVAR;
     dXSARGS;
     if (items < 1)
	 croak_xs_usage(cv, "lobj, ...");
     SP -= items;
     {
	  SV *	lobj = ST(0);

	  if (sv_isobject(lobj) && sv_derived_from(lobj, "version")) {
	       lobj = SvRV(lobj);
	  }
	  else
	       Perl_croak(aTHX_ "lobj is not of type version");

	  mPUSHs(vstringify(lobj));

	  PUTBACK;
	  return;
     }
}

XS(XS_version_numify)
{
     dVAR;
     dXSARGS;
     if (items < 1)
	 croak_xs_usage(cv, "lobj, ...");
     SP -= items;
     {
	  SV *	lobj = ST(0);

	  if (sv_isobject(lobj) && sv_derived_from(lobj, "version")) {
	       lobj = SvRV(lobj);
	  }
	  else
	       Perl_croak(aTHX_ "lobj is not of type version");

	  mPUSHs(vnumify(lobj));

	  PUTBACK;
	  return;
     }
}

XS(XS_version_normal)
{
     dVAR;
     dXSARGS;
     if (items < 1)
	 croak_xs_usage(cv, "lobj, ...");
     SP -= items;
     {
	  SV *	lobj = ST(0);

	  if (sv_isobject(lobj) && sv_derived_from(lobj, "version")) {
	       lobj = SvRV(lobj);
	  }
	  else
	       Perl_croak(aTHX_ "lobj is not of type version");

	  mPUSHs(vnormal(lobj));

	  PUTBACK;
	  return;
     }
}

XS(XS_version_vcmp)
{
     dVAR;
     dXSARGS;
     if (items < 1)
	 croak_xs_usage(cv, "lobj, ...");
     SP -= items;
     {
	  SV *	lobj = ST(0);

	  if (sv_isobject(lobj) && sv_derived_from(lobj, "version")) {
	       lobj = SvRV(lobj);
	  }
	  else
	       Perl_croak(aTHX_ "lobj is not of type version");

	  {
	       SV	*rs;
	       SV	*rvs;
	       SV * robj = ST(1);
	       const IV	 swap = (IV)SvIV(ST(2));

	       if ( !sv_isobject(robj) || !sv_derived_from(robj, "version") )
	       {
		    robj = new_version(SvOK(robj) ? robj : newSVpvs_flags("0", SVs_TEMP));
		    sv_2mortal(robj);
	       }
	       rvs = SvRV(robj);

	       if ( swap )
	       {
		    rs = newSViv(vcmp(rvs,lobj));
	       }
	       else
	       {
		    rs = newSViv(vcmp(lobj,rvs));
	       }

	       mPUSHs(rs);
	  }

	  PUTBACK;
	  return;
     }
}

XS(XS_version_boolean)
{
    dVAR;
    dXSARGS;
    if (items < 1)
	croak_xs_usage(cv, "lobj, ...");
    SP -= items;
    if (sv_isobject(ST(0)) && sv_derived_from(ST(0), "version")) {
	SV * const lobj = SvRV(ST(0));
	SV * const rs =
	    newSViv( vcmp(lobj,
			  sv_2mortal(new_version(
					sv_2mortal(newSVpvs("0"))
				    ))
			 )
		   );
	mPUSHs(rs);
	PUTBACK;
	return;
    }
    else
	Perl_croak(aTHX_ "lobj is not of type version");
}

XS(XS_version_noop)
{
    dVAR;
    dXSARGS;
    if (items < 1)
	croak_xs_usage(cv, "lobj, ...");
    if (sv_isobject(ST(0)) && sv_derived_from(ST(0), "version"))
	Perl_croak(aTHX_ "operation not supported with version object");
    else
	Perl_croak(aTHX_ "lobj is not of type version");
#ifndef HASATTRIBUTE_NORETURN
    XSRETURN_EMPTY;
#endif
}

XS(XS_version_is_alpha)
{
    dVAR;
    dXSARGS;
    if (items != 1)
	croak_xs_usage(cv, "lobj");
    SP -= items;
    if (sv_isobject(ST(0)) && sv_derived_from(ST(0), "version")) {
	SV * const lobj = ST(0);
	if ( hv_exists(MUTABLE_HV(SvRV(lobj)), "alpha", 5 ) )
	    XSRETURN_YES;
	else
	    XSRETURN_NO;
	PUTBACK;
	return;
    }
    else
	Perl_croak(aTHX_ "lobj is not of type version");
}

XS(XS_version_qv)
{
    dVAR;
    dXSARGS;
    PERL_UNUSED_ARG(cv);
    SP -= items;
    {
	SV * ver = ST(0);
	SV * rv;
        STRLEN len = 0;
        const char * classname = "";
        U32 flags = 0;
        if ( items == 2 ) {
	    SvGETMAGIC(ST(1));
	    if (SvOK(ST(1))) {
		ver = ST(1);
	    }
	    else {
		Perl_croak(aTHX_ "Invalid version format (version required)");
	    }
            if ( sv_isobject(ST(0)) ) { /* class called as an object method */
                const HV * stash = SvSTASH(SvRV(ST(0)));
                classname = HvNAME(stash);
                len       = HvNAMELEN(stash);
                flags     = HvNAMEUTF8(stash) ? SVf_UTF8 : 0;
            }
            else {
	       classname = SvPV(ST(0), len);
                flags     = SvUTF8(ST(0));
            }
        }
	if ( !SvVOK(ver) ) { /* not already a v-string */
	    rv = sv_newmortal();
	    sv_setsv(rv,ver); /* make a duplicate */
	    upg_version(rv, TRUE);
	} else {
	    rv = sv_2mortal(new_version(ver));
	}
	if ( items == 2
                && strnNE(classname,"version", len) ) { /* inherited new() */
	    sv_bless(rv, gv_stashpvn(classname, len, GV_ADD | flags));
        }
	PUSHs(rv);
    }
    PUTBACK;
    return;
}

XS(XS_version_is_qv)
{
    dVAR;
    dXSARGS;
    if (items != 1)
	croak_xs_usage(cv, "lobj");
    SP -= items;
    if (sv_isobject(ST(0)) && sv_derived_from(ST(0), "version")) {
	SV * const lobj = ST(0);
	if ( hv_exists(MUTABLE_HV(SvRV(lobj)), "qv", 2 ) )
	    XSRETURN_YES;
	else
	    XSRETURN_NO;
	PUTBACK;
	return;
    }
    else
	Perl_croak(aTHX_ "lobj is not of type version");
}

#endif
Commit	Line	Data
abc6d738 FC	1	/* This file is part of the "version" CPAN distribution. Please avoid
	2	editing it in the perl core. */
	3
b42aaea1 FC	4	#ifdef PERL_CORE
	5	# define VXS_CLASS "version"
	6	#else
	7	# define VXS_CLASS "version::vxs"
	8	#endif
	9
abc6d738	10	#ifdef VXS_XSUB_DETAILS
b42aaea1	11	# ifdef PERL_CORE
abc6d738	12	{"UNIVERSAL::VERSION", XS_UNIVERSAL_VERSION, NULL},
b42aaea1 FC	13	# else
	14	{VXS_CLASS "::_VERSION", XS_UNIVERSAL_VERSION, NULL},
	15	# endif
	16	{VXS_CLASS "::()", XS_version_noop, NULL},
	17	{VXS_CLASS "::new", XS_version_new, NULL},
	18	{VXS_CLASS "::parse", XS_version_new, NULL},
	19	{VXS_CLASS "::(\"\"", XS_version_stringify, NULL},
	20	{VXS_CLASS "::stringify", XS_version_stringify, NULL},
	21	{VXS_CLASS "::(0+", XS_version_numify, NULL},
	22	{VXS_CLASS "::numify", XS_version_numify, NULL},
	23	{VXS_CLASS "::normal", XS_version_normal, NULL},
	24	{VXS_CLASS "::(cmp", XS_version_vcmp, NULL},
	25	{VXS_CLASS "::(<=>", XS_version_vcmp, NULL},
	26	# ifdef PERL_CORE
	27	{VXS_CLASS "::vcmp", XS_version_vcmp, NULL},
	28	# else
	29	{VXS_CLASS "::VCMP", XS_version_vcmp, NULL},
	30	# endif
	31	{VXS_CLASS "::(bool", XS_version_boolean, NULL},
	32	{VXS_CLASS "::boolean", XS_version_boolean, NULL},
	33	{VXS_CLASS "::(+", XS_version_noop, NULL},
	34	{VXS_CLASS "::(-", XS_version_noop, NULL},
	35	{VXS_CLASS "::(*", XS_version_noop, NULL},
	36	{VXS_CLASS "::(/", XS_version_noop, NULL},
	37	{VXS_CLASS "::(+=", XS_version_noop, NULL},
	38	{VXS_CLASS "::(-=", XS_version_noop, NULL},
	39	{VXS_CLASS "::(*=", XS_version_noop, NULL},
	40	{VXS_CLASS "::(/=", XS_version_noop, NULL},
	41	{VXS_CLASS "::(abs", XS_version_noop, NULL},
	42	{VXS_CLASS "::(nomethod", XS_version_noop, NULL},
	43	{VXS_CLASS "::noop", XS_version_noop, NULL},
	44	{VXS_CLASS "::is_alpha", XS_version_is_alpha, NULL},
	45	{VXS_CLASS "::qv", XS_version_qv, NULL},
	46	{VXS_CLASS "::declare", XS_version_qv, NULL},
	47	{VXS_CLASS "::is_qv", XS_version_is_qv, NULL},
abc6d738 FC	48	#else
abc6d738 FC	49
04df8d4d FC	50	#ifndef dVAR
	51	# define dVAR
	52	#endif
	53
abc6d738 FC	54	XS(XS_UNIVERSAL_VERSION)
	55	{
	56	dVAR;
	57	dXSARGS;
	58	HV *pkg;
	59	GV **gvp;
	60	GV *gv;
	61	SV *sv;
	62	const char *undef;
	63	PERL_UNUSED_ARG(cv);
	64
	65	if (SvROK(ST(0))) {
	66	sv = MUTABLE_SV(SvRV(ST(0)));
	67	if (!SvOBJECT(sv))
	68	Perl_croak(aTHX_ "Cannot find version of an unblessed reference");
	69	pkg = SvSTASH(sv);
	70	}
	71	else {
	72	pkg = gv_stashsv(ST(0), 0);
	73	}
	74
	75	gvp = pkg ? (GV**)hv_fetchs(pkg, "VERSION", FALSE) : NULL;
	76
	77	if (gvp && isGV(gv = *gvp) && (sv = GvSV(gv)) && SvOK(sv)) {
	78	SV * const nsv = sv_newmortal();
	79	sv_setsv(nsv, sv);
	80	sv = nsv;
	81	if ( !sv_isobject(sv) \|\| !sv_derived_from(sv, "version"))
	82	upg_version(sv, FALSE);
	83
	84	undef = NULL;
	85	}
	86	else {
	87	sv = &PL_sv_undef;
	88	undef = "(undef)";
	89	}
	90
	91	if (items > 1) {
	92	SV *req = ST(1);
	93
	94	if (undef) {
	95	if (pkg) {
	96	const HEK * const name = HvNAME_HEK(pkg);
	97	Perl_croak(aTHX_
	98	"%"HEKf" does not define $%"HEKf
	99	"::VERSION--version check failed",
	100	HEKfARG(name), HEKfARG(name));
	101	} else {
	102	Perl_croak(aTHX_
	103	"%"SVf" defines neither package nor VERSION--version check failed",
	104	SVfARG(ST(0)) );
	105	}
	106	}
	107
	108	if ( !sv_isobject(req) \|\| !sv_derived_from(req, "version")) {
	109	/* req may very well be R/O, so create a new object */
	110	req = sv_2mortal( new_version(req) );
	111	}
	112
	113	if ( vcmp( req, sv ) > 0 ) {
	114	if ( hv_exists(MUTABLE_HV(SvRV(req)), "qv", 2 ) ) {
	115	Perl_croak(aTHX_ "%"HEKf" version %"SVf" required--"
	116	"this is only version %"SVf"",
	117	HEKfARG(HvNAME_HEK(pkg)),
118	SVfARG(sv_2mortal(vnormal(req))),
119	SVfARG(sv_2mortal(vnormal(sv))));
120	} else {
121	Perl_croak(aTHX_ "%"HEKf" version %"SVf" required--"
122	"this is only version %"SVf,
123	HEKfARG(HvNAME_HEK(pkg)),
124	SVfARG(sv_2mortal(vstringify(req))),
125	SVfARG(sv_2mortal(vstringify(sv))));
126	}
127	}
128	}
129
130	if ( SvOK(sv) && sv_derived_from(sv, "version") ) {
131	ST(0) = sv_2mortal(vstringify(sv));
132	} else {
133	ST(0) = sv;
134	}
135
136	XSRETURN(1);
137	}
138
139	XS(XS_version_new)
140	{
141	dVAR;
142	dXSARGS;
143	if (items > 3 \|\| items < 1)
144	croak_xs_usage(cv, "class, version");
145	SP -= items;
146	{
147	SV *vs = ST(1);
148	SV *rv;
149	STRLEN len;
150	const char *classname;
151	U32 flags;
152
153	/* Just in case this is something like a tied hash */
154	SvGETMAGIC(vs);
155
156	if ( sv_isobject(ST(0)) ) { /* get the class if called as an object method */
157	const HV * stash = SvSTASH(SvRV(ST(0)));
158	classname = HvNAME(stash);
159	len = HvNAMELEN(stash);
160	flags = HvNAMEUTF8(stash) ? SVf_UTF8 : 0;
161	}
162	else {
163	classname = SvPV(ST(0), len);
164	flags = SvUTF8(ST(0));
165	}
166
167	if ( items == 1 \|\| ! SvOK(vs) ) { /* no param or explicit undef */
168	/* create empty object */
169	vs = sv_newmortal();
170	sv_setpvs(vs, "0");
171	}
172	else if ( items == 3 ) {
173	vs = sv_newmortal();
174	Perl_sv_setpvf(aTHX_ vs,"v%s",SvPV_nolen_const(ST(2)));
175	}
176
177	rv = new_version(vs);
178	if ( strnNE(classname,"version", len) ) /* inherited new() */
179	sv_bless(rv, gv_stashpvn(classname, len, GV_ADD \| flags));
180
181	mPUSHs(rv);
182	PUTBACK;
183	return;
184	}
185	}
186
187	XS(XS_version_stringify)
188	{
189	dVAR;
190	dXSARGS;
191	if (items < 1)
192	croak_xs_usage(cv, "lobj, ...");
193	SP -= items;
194	{
195	SV * lobj = ST(0);
196
197	if (sv_isobject(lobj) && sv_derived_from(lobj, "version")) {
198	lobj = SvRV(lobj);
199	}
200	else
201	Perl_croak(aTHX_ "lobj is not of type version");
202
203	mPUSHs(vstringify(lobj));
204
205	PUTBACK;
206	return;
207	}
208	}
209
210	XS(XS_version_numify)
211	{
212	dVAR;
213	dXSARGS;
214	if (items < 1)
215	croak_xs_usage(cv, "lobj, ...");
216	SP -= items;
217	{
218	SV * lobj = ST(0);
219
220	if (sv_isobject(lobj) && sv_derived_from(lobj, "version")) {
221	lobj = SvRV(lobj);
222	}
223	else
224	Perl_croak(aTHX_ "lobj is not of type version");
225
226	mPUSHs(vnumify(lobj));
227
228	PUTBACK;
229	return;
230	}
231	}
232
233	XS(XS_version_normal)
234	{
235	dVAR;
236	dXSARGS;
237	if (items < 1)
238	croak_xs_usage(cv, "lobj, ...");
239	SP -= items;
240	{
241	SV * lobj = ST(0);
242
243	if (sv_isobject(lobj) && sv_derived_from(lobj, "version")) {
244	lobj = SvRV(lobj);
245	}
246	else
247	Perl_croak(aTHX_ "lobj is not of type version");
248
249	mPUSHs(vnormal(lobj));
250
251	PUTBACK;
252	return;
253	}
254	}
255
256	XS(XS_version_vcmp)
257	{
258	dVAR;
259	dXSARGS;
260	if (items < 1)
261	croak_xs_usage(cv, "lobj, ...");
262	SP -= items;
263	{
264	SV * lobj = ST(0);
265
266	if (sv_isobject(lobj) && sv_derived_from(lobj, "version")) {
267	lobj = SvRV(lobj);
268	}
269	else
270	Perl_croak(aTHX_ "lobj is not of type version");
271
272	{
273	SV *rs;
274	SV *rvs;
275	SV * robj = ST(1);
276	const IV swap = (IV)SvIV(ST(2));
277
278	if ( !sv_isobject(robj) \|\| !sv_derived_from(robj, "version") )
279	{
280	robj = new_version(SvOK(robj) ? robj : newSVpvs_flags("0", SVs_TEMP));
281	sv_2mortal(robj);
282	}
283	rvs = SvRV(robj);
284
285	if ( swap )
286	{
287	rs = newSViv(vcmp(rvs,lobj));
288	}
289	else
290	{
291	rs = newSViv(vcmp(lobj,rvs));
292	}
293
294	mPUSHs(rs);
295	}
296
297	PUTBACK;
298	return;
299	}
300	}
301
302	XS(XS_version_boolean)
303	{
304	dVAR;
305	dXSARGS;
306	if (items < 1)
307	croak_xs_usage(cv, "lobj, ...");
308	SP -= items;
309	if (sv_isobject(ST(0)) && sv_derived_from(ST(0), "version")) {
310	SV * const lobj = SvRV(ST(0));
311	SV * const rs =
312	newSViv( vcmp(lobj,
313	sv_2mortal(new_version(
314	sv_2mortal(newSVpvs("0"))
315	))
316	)
317	);
318	mPUSHs(rs);
319	PUTBACK;
320	return;
321	}
322	else
323	Perl_croak(aTHX_ "lobj is not of type version");
324	}
325
326	XS(XS_version_noop)
327	{
328	dVAR;
329	dXSARGS;
330	if (items < 1)
331	croak_xs_usage(cv, "lobj, ...");
332	if (sv_isobject(ST(0)) && sv_derived_from(ST(0), "version"))
333	Perl_croak(aTHX_ "operation not supported with version object");
334	else
335	Perl_croak(aTHX_ "lobj is not of type version");
336	#ifndef HASATTRIBUTE_NORETURN
337	XSRETURN_EMPTY;
338	#endif
339	}
340
341	XS(XS_version_is_alpha)
342	{
343	dVAR;
344	dXSARGS;
345	if (items != 1)
346	croak_xs_usage(cv, "lobj");
347	SP -= items;
348	if (sv_isobject(ST(0)) && sv_derived_from(ST(0), "version")) {
349	SV * const lobj = ST(0);
350	if ( hv_exists(MUTABLE_HV(SvRV(lobj)), "alpha", 5 ) )
351	XSRETURN_YES;
352	else
353	XSRETURN_NO;
354	PUTBACK;
355	return;
356	}
357	else
358	Perl_croak(aTHX_ "lobj is not of type version");
359	}
360
361	XS(XS_version_qv)
362	{
363	dVAR;
364	dXSARGS;
365	PERL_UNUSED_ARG(cv);
366	SP -= items;
367	{
368	SV * ver = ST(0);
369	SV * rv;
370	STRLEN len = 0;
371	const char * classname = "";
372	U32 flags = 0;
373	if ( items == 2 ) {
374	SvGETMAGIC(ST(1));
375	if (SvOK(ST(1))) {
376	ver = ST(1);
377	}
378	else {
379	Perl_croak(aTHX_ "Invalid version format (version required)");
380	}
381	if ( sv_isobject(ST(0)) ) { /* class called as an object method */
382	const HV * stash = SvSTASH(SvRV(ST(0)));
383	classname = HvNAME(stash);
384	len = HvNAMELEN(stash);
385	flags = HvNAMEUTF8(stash) ? SVf_UTF8 : 0;
386	}
387	else {
388	classname = SvPV(ST(0), len);
389	flags = SvUTF8(ST(0));
390	}
391	}
392	if ( !SvVOK(ver) ) { /* not already a v-string */
393	rv = sv_newmortal();
394	sv_setsv(rv,ver); /* make a duplicate */
395	upg_version(rv, TRUE);
396	} else {
397	rv = sv_2mortal(new_version(ver));
398	}
399	if ( items == 2
400	&& strnNE(classname,"version", len) ) { /* inherited new() */
401	sv_bless(rv, gv_stashpvn(classname, len, GV_ADD \| flags));
402	}
403	PUSHs(rv);
404	}
405	PUTBACK;
406	return;
407	}
408
409	XS(XS_version_is_qv)
410	{
411	dVAR;
412	dXSARGS;
413	if (items != 1)
414	croak_xs_usage(cv, "lobj");
415	SP -= items;
416	if (sv_isobject(ST(0)) && sv_derived_from(ST(0), "version")) {
417	SV * const lobj = ST(0);
418	if ( hv_exists(MUTABLE_HV(SvRV(lobj)), "qv", 2 ) )
419	XSRETURN_YES;
420	else
421	XSRETURN_NO;
422	PUTBACK;
423	return;
424	}
425	else
426	Perl_croak(aTHX_ "lobj is not of type version");
427	}
428
429	#endif