#include "EXTERN.h"
+#define PERL_IN_UNIVERSAL_C
#include "perl.h"
/*
*/
STATIC SV *
-isa_lookup(HV *stash, char *name, int len, int level)
+S_isa_lookup(pTHX_ HV *stash, const char *name, int len, int level)
{
AV* av;
GV* gv;
return &PL_sv_yes;
if (level > 100)
- croak("Recursive inheritance detected in package '%s'", HvNAME(stash));
+ Perl_croak(aTHX_ "Recursive inheritance detected in package '%s'", HvNAME(stash));
gvp = (GV**)hv_fetch(stash, "::ISA::CACHE::", 14, FALSE);
if (!basestash) {
dTHR;
if (ckWARN(WARN_MISC))
- warner(WARN_SYNTAX,
+ Perl_warner(aTHX_ WARN_SYNTAX,
"Can't locate package %s for @%s::ISA",
SvPVX(sv), HvNAME(stash));
continue;
return boolSV(strEQ(name, "UNIVERSAL"));
}
+/*
+=for apidoc sv_derived_from
+
+Returns a boolean indicating whether the SV is derived from the specified
+class. This is the function that implements C<UNIVERSAL::isa>. It works
+for class names as well as for objects.
+
+=cut
+*/
+
bool
-sv_derived_from(SV *sv, char *name)
+Perl_sv_derived_from(pTHX_ SV *sv, const char *name)
{
- SV *rv;
char *type;
HV *stash;
(stash && isa_lookup(stash, name, strlen(name), 0) == &PL_sv_yes)
? TRUE
: FALSE ;
-
}
-#ifdef PERL_OBJECT
-#define NO_XSLOCKS
-#endif /* PERL_OBJECT */
+void XS_UNIVERSAL_isa(pTHXo_ CV *cv);
+void XS_UNIVERSAL_can(pTHXo_ CV *cv);
+void XS_UNIVERSAL_VERSION(pTHXo_ CV *cv);
+
+void
+Perl_boot_core_UNIVERSAL(pTHX)
+{
+ char *file = __FILE__;
+
+ newXS("UNIVERSAL::isa", XS_UNIVERSAL_isa, file);
+ newXS("UNIVERSAL::can", XS_UNIVERSAL_can, file);
+ newXS("UNIVERSAL::VERSION", XS_UNIVERSAL_VERSION, file);
+}
#include "XSUB.h"
dXSARGS;
SV *sv;
char *name;
+ STRLEN n_a;
if (items != 2)
- croak("Usage: UNIVERSAL::isa(reference, kind)");
+ Perl_croak(aTHX_ "Usage: UNIVERSAL::isa(reference, kind)");
sv = ST(0);
- name = (char *)SvPV(ST(1),PL_na);
+
+ if (SvGMAGICAL(sv))
+ mg_get(sv);
+
+ if (!SvOK(sv) || !(SvROK(sv) || (SvPOK(sv) && SvCUR(sv))))
+ XSRETURN_UNDEF;
+
+ name = (char *)SvPV(ST(1),n_a);
ST(0) = boolSV(sv_derived_from(sv, name));
XSRETURN(1);
char *name;
SV *rv;
HV *pkg = NULL;
+ STRLEN n_a;
if (items != 2)
- croak("Usage: UNIVERSAL::can(object-ref, method)");
+ Perl_croak(aTHX_ "Usage: UNIVERSAL::can(object-ref, method)");
sv = ST(0);
- name = (char *)SvPV(ST(1),PL_na);
+
+ if (SvGMAGICAL(sv))
+ mg_get(sv);
+
+ if (!SvOK(sv) || !(SvROK(sv) || (SvPOK(sv) && SvCUR(sv))))
+ XSRETURN_UNDEF;
+
+ name = (char *)SvPV(ST(1),n_a);
rv = &PL_sv_undef;
if(SvROK(sv)) {
GV *gv;
SV *sv;
char *undef;
- double req;
- if(SvROK(ST(0))) {
+ if (SvROK(ST(0))) {
sv = (SV*)SvRV(ST(0));
- if(!SvOBJECT(sv))
- croak("Cannot find version of an unblessed reference");
+ if (!SvOBJECT(sv))
+ Perl_croak(aTHX_ "Cannot find version of an unblessed reference");
pkg = SvSTASH(sv);
}
else {
gvp = pkg ? (GV**)hv_fetch(pkg,"VERSION",7,FALSE) : Null(GV**);
- if (gvp && (gv = *gvp) != (GV*)&PL_sv_undef && (sv = GvSV(gv))) {
+ if (gvp && isGV(gv = *gvp) && SvOK(sv = GvSV(gv))) {
SV *nsv = sv_newmortal();
sv_setsv(nsv, sv);
sv = nsv;
undef = "(undef)";
}
- if (items > 1 && (undef || (req = SvNV(ST(1)), req > SvNV(sv))))
- croak("%s version %s required--this is only version %s",
- HvNAME(pkg), SvPV(ST(1),PL_na), undef ? undef : SvPV(sv,PL_na));
+ if (items > 1) {
+ STRLEN len;
+ SV *req = ST(1);
+
+ if (undef)
+ Perl_croak(aTHX_ "%s does not define $%s::VERSION--version check failed",
+ HvNAME(pkg), HvNAME(pkg));
+
+ if (!SvNIOK(sv) && SvPOK(sv)) {
+ char *str = SvPVx(sv,len);
+ while (len) {
+ --len;
+ /* XXX could DWIM "1.2.3" here */
+ if (!isDIGIT(str[len]) && str[len] != '.' && str[len] != '_')
+ break;
+ }
+ if (len) {
+ if (SvNIOKp(req) && SvPOK(req)) {
+ /* they said C<use Foo v1.2.3> and $Foo::VERSION
+ * doesn't look like a float: do string compare */
+ if (sv_cmp(req,sv) == 1) {
+ Perl_croak(aTHX_ "%s v%vd required--"
+ "this is only v%vd",
+ HvNAME(pkg), req, sv);
+ }
+ goto finish;
+ }
+ /* they said C<use Foo 1.002_003> and $Foo::VERSION
+ * doesn't look like a float: force numeric compare */
+ (void)SvUPGRADE(sv, SVt_PVNV);
+ SvNVX(sv) = str_to_version(sv);
+ SvPOK_off(sv);
+ SvNOK_on(sv);
+ }
+ }
+ /* if we get here, we're looking for a numeric comparison,
+ * so force the required version into a float, even if they
+ * said C<use Foo v1.2.3> */
+ if (SvNIOKp(req) && SvPOK(req)) {
+ NV n = SvNV(req);
+ req = sv_newmortal();
+ sv_setnv(req, n);
+ }
+
+ if (SvNV(req) > SvNV(sv))
+ Perl_croak(aTHX_ "%s version %s required--this is only version %s",
+ HvNAME(pkg), SvPV(req,len), SvPV(sv,len));
+ }
+finish:
ST(0) = sv;
XSRETURN(1);
}
-#ifdef PERL_OBJECT
-#undef boot_core_UNIVERSAL
-#define boot_core_UNIVERSAL CPerlObj::Perl_boot_core_UNIVERSAL
-#define pPerl this
-#endif
-
-void
-boot_core_UNIVERSAL(void)
-{
- char *file = __FILE__;
-
- newXS("UNIVERSAL::isa", XS_UNIVERSAL_isa, file);
- newXS("UNIVERSAL::can", XS_UNIVERSAL_can, file);
- newXS("UNIVERSAL::VERSION", XS_UNIVERSAL_VERSION, file);
-}
https://perl5.git.perl.org / perl5.git / blobdiff