本文整理汇总了C++中GvSTASH函数的典型用法代码示例。如果您正苦于以下问题：C++ GvSTASH函数的具体用法？C++ GvSTASH怎么用？C++ GvSTASH使用的例子？那么恭喜您, 这里精选的函数代码示例或许可以为您提供帮助。
在下文中一共展示了GvSTASH函数的16个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于我们的系统推荐出更棒的C++代码示例。
示例1: S_guess_stash
/* helper to return the stash for a svref, (Sv|Cv|Gv|GvE)STASH */
static HV*
S_guess_stash(pTHX_ SV* sv)
{
if (SvOBJECT(sv)) {
return SvSTASH(sv);
}
else {
HV *stash = NULL;
switch (SvTYPE(sv)) {
case SVt_PVCV:
if (CvGV(sv) && isGV(CvGV(sv)) && GvSTASH(CvGV(sv)))
return GvSTASH(CvGV(sv));
else if (/* !CvANON(sv) && */ CvSTASH(sv))
return CvSTASH(sv);
break;
case SVt_PVGV:
if (isGV_with_GP(sv) && GvGP(sv) && GvESTASH(MUTABLE_GV(sv)))
return GvESTASH(MUTABLE_GV(sv));
break;
default:
break;
}
return stash;
}
}
开发者ID:bulk88，项目名称:cperl，代码行数:26，代码来源:xsutils.c
示例2: mop_get_code_info
int
mop_get_code_info (SV *coderef, char **pkg, char **name)
{
if (!SvOK(coderef) || !SvROK(coderef) || SvTYPE(SvRV(coderef)) != SVt_PVCV) {
return 0;
}
coderef = SvRV(coderef);
/* sub is still being compiled */
if (!CvGV(coderef)) {
return 0;
}
/* I think this only gets triggered with a mangled coderef, but if
we hit it without the guard, we segfault. The slightly odd return
value strikes me as an improvement (mst)
*/
if ( isGV_with_GP(CvGV(coderef)) ) {
GV *gv = CvGV(coderef);
*pkg = HvNAME( GvSTASH(gv) ? GvSTASH(gv) : CvSTASH(coderef) );
*name = GvNAME( CvGV(coderef) );
} else {
*pkg = "__UNKNOWN__";
*name = "__ANON__";
}
return 1;
}
开发者ID:bobtfish，项目名称:class-mop，代码行数:30，代码来源:mop.c
示例3: Perl_gv_autoload4
GV*
Perl_gv_autoload4(pTHX_ HV *stash, const char *name, STRLEN len, I32 method)
{
char autoload[] = "AUTOLOAD";
STRLEN autolen = sizeof(autoload)-1;
GV* gv;
CV* cv;
HV* varstash;
GV* vargv;
SV* varsv;
if (len == autolen && strnEQ(name, autoload, autolen))
return Nullgv;
if (!(gv = gv_fetchmeth(stash, autoload, autolen, FALSE)))
return Nullgv;
cv = GvCV(gv);
if (!CvROOT(cv))
return Nullgv;
/*
* Inheriting AUTOLOAD for non-methods works ... for now.
*/
if (ckWARN(WARN_DEPRECATED) && !method &&
(GvCVGEN(gv) || GvSTASH(gv) != stash))
Perl_warner(aTHX_ WARN_DEPRECATED,
"Use of inherited AUTOLOAD for non-method %s::%.*s() is deprecated",
HvNAME(stash), (int)len, name);
/*
* Given &FOO::AUTOLOAD, set $FOO::AUTOLOAD to desired function name.
* The subroutine's original name may not be "AUTOLOAD", so we don't
* use that, but for lack of anything better we will use the sub's
* original package to look up $AUTOLOAD.
*/
varstash = GvSTASH(CvGV(cv));
vargv = *(GV**)hv_fetch(varstash, autoload, autolen, TRUE);
ENTER;
#ifdef USE_THREADS
sv_lock((SV *)varstash);
#endif
if (!isGV(vargv))
gv_init(vargv, varstash, autoload, autolen, FALSE);
LEAVE;
varsv = GvSV(vargv);
#ifdef USE_THREADS
sv_lock(varsv);
#endif
sv_setpv(varsv, HvNAME(stash));
sv_catpvn(varsv, "::", 2);
sv_catpvn(varsv, name, len);
SvTAINTED_off(varsv);
return gv;
}
开发者ID:fduhia，项目名称:metamage_1，代码行数:55，代码来源:gv.c
示例4: SvRV
modperl_handler_t *modperl_handler_new_from_sv(pTHX_ apr_pool_t *p, SV *sv)
{
char *name = NULL;
GV *gv;
if (SvROK(sv)) {
sv = SvRV(sv);
}
switch (SvTYPE(sv)) {
case SVt_PV:
name = SvPVX(sv);
return modperl_handler_new(p, apr_pstrdup(p, name));
break;
case SVt_PVCV:
if (CvANON((CV*)sv)) {
return modperl_handler_new_anon(aTHX_ p, (CV*)sv);
}
if (!(gv = CvGV((CV*)sv))) {
Perl_croak(aTHX_ "can't resolve the code reference");
}
name = apr_pstrcat(p, HvNAME(GvSTASH(gv)), "::", GvNAME(gv), NULL);
return modperl_handler_new(p, name);
default:
break;
};
return NULL;
}
开发者ID:gitpan，项目名称:mod_perl，代码行数:29，代码来源:modperl_handler.c
示例5: Perl_gv_fetchmethod_autoload
GV *
Perl_gv_fetchmethod_autoload(pTHX_ HV *stash, const char *name, I32 autoload)
{
register const char *nend;
const char *nsplit = 0;
GV* gv;
for (nend = name; *nend; nend++) {
if (*nend == '\'')
nsplit = nend;
else if (*nend == ':' && *(nend + 1) == ':')
nsplit = ++nend;
}
if (nsplit) {
const char *origname = name;
name = nsplit + 1;
if (*nsplit == ':')
--nsplit;
if ((nsplit - origname) == 5 && strnEQ(origname, "SUPER", 5)) {
/* ->SUPER::method should really be looked up in original stash */
SV *tmpstr = sv_2mortal(Perl_newSVpvf(aTHX_ "%s::SUPER",
CopSTASHPV(PL_curcop)));
stash = gv_stashpvn(SvPVX(tmpstr), SvCUR(tmpstr), TRUE);
DEBUG_o( Perl_deb(aTHX_ "Treating %s as %s::%s\n",
origname, HvNAME(stash), name) );
}
else
stash = gv_stashpvn(origname, nsplit - origname, TRUE);
}
gv = gv_fetchmeth(stash, name, nend - name, 0);
if (!gv) {
if (strEQ(name,"import") || strEQ(name,"unimport"))
gv = (GV*)&PL_sv_yes;
else if (autoload)
gv = gv_autoload4(stash, name, nend - name, TRUE);
}
else if (autoload) {
CV* cv = GvCV(gv);
if (!CvROOT(cv) && !CvXSUB(cv)) {
GV* stubgv;
GV* autogv;
if (CvANON(cv))
stubgv = gv;
else {
stubgv = CvGV(cv);
if (GvCV(stubgv) != cv) /* orphaned import */
stubgv = gv;
}
autogv = gv_autoload4(GvSTASH(stubgv),
GvNAME(stubgv), GvNAMELEN(stubgv), TRUE);
if (autogv)
gv = autogv;
}
}
return gv;
}
开发者ID:fduhia，项目名称:metamage_1，代码行数:59，代码来源:gv.c
示例6: hv_delete
SV *PerlIONginxInput_newhandle(pTHX_ ngx_http_request_t *r)
{
ngx_log_t *log = r->connection->log;
GV *gv = (GV*)SvREFCNT_inc(newGVgen("Nginx::PSGI::Input"));
if (!gv)
return &PL_sv_undef;
(void) hv_delete(GvSTASH(gv), GvNAME(gv), GvNAMELEN(gv), G_DISCARD);
/* Body in memory */
if (r->request_body == NULL || r->request_body->temp_file == NULL) {
ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
"Open filehandle with 'ngx_input' layer to read from buffers");
PerlIO *f = PerlIO_allocate(aTHX);
if (!(f = PerlIO_push(aTHX_ f, PERLIO_FUNCS_CAST(&PerlIO_nginx_input), "<", NULL)) ) {
ngx_log_error(NGX_LOG_ERR, log, 0,
"Error pushing layer to FH"
);
return &PL_sv_undef;
}
if (!do_open(gv, "+<&", 3, FALSE, O_RDONLY, 0, f)) {
ngx_log_error(NGX_LOG_ERR, log, 0,
"Error opening GV"
);
// FIXME PerlIO_close
return &PL_sv_undef;
}
PerlIONginxInput *st = PerlIOSelf(f, PerlIONginxInput);
st->r = r;
} else {
/* Body in temp file */
ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
"Open PSGI request body temp file '%s'",
r->request_body->temp_file->file.name.data
);
bool result = do_open(gv,(char*)r->request_body->temp_file->file.name.data, r->request_body->temp_file->file.name.len,FALSE,O_RDONLY,0,NULL);
if (!result) {
ngx_log_error(NGX_LOG_ERR, log, 0,
"Error opening file"
);
// FIXME PerlIO_close
return NULL;
}
}
return (SV*)newRV_noinc((SV *)gv);
}
开发者ID:nginx-modules，项目名称:ngx_mod_psgi，代码行数:56，代码来源:ngx_http_psgi_input_stream.c
示例7: Perl_gv_init
void
Perl_gv_init(pTHX_ GV *gv, HV *stash, const char *name, STRLEN len, int multi)
{
register GP *gp;
bool doproto = SvTYPE(gv) > SVt_NULL;
char *proto = (doproto && SvPOK(gv)) ? SvPVX(gv) : NULL;
sv_upgrade((SV*)gv, SVt_PVGV);
if (SvLEN(gv)) {
if (proto) {
SvPVX(gv) = NULL;
SvLEN(gv) = 0;
SvPOK_off(gv);
} else
Safefree(SvPVX(gv));
}
Newz(602, gp, 1, GP);
GvGP(gv) = gp_ref(gp);
GvSV(gv) = NEWSV(72,0);
GvLINE(gv) = CopLINE(PL_curcop);
GvFILE(gv) = CopFILE(PL_curcop) ? CopFILE(PL_curcop) : "";
GvCVGEN(gv) = 0;
GvEGV(gv) = gv;
sv_magic((SV*)gv, (SV*)gv, '*', Nullch, 0);
GvSTASH(gv) = (HV*)SvREFCNT_inc(stash);
GvNAME(gv) = savepvn(name, len);
GvNAMELEN(gv) = len;
if (multi || doproto) /* doproto means it _was_ mentioned */
GvMULTI_on(gv);
if (doproto) { /* Replicate part of newSUB here. */
SvIOK_off(gv);
ENTER;
/* XXX unsafe for threads if eval_owner isn't held */
start_subparse(0,0); /* Create CV in compcv. */
GvCV(gv) = PL_compcv;
LEAVE;
PL_sub_generation++;
CvGV(GvCV(gv)) = gv;
CvFILE(GvCV(gv)) = CopFILE(PL_curcop);
CvSTASH(GvCV(gv)) = PL_curstash;
#ifdef USE_THREADS
CvOWNER(GvCV(gv)) = 0;
if (!CvMUTEXP(GvCV(gv))) {
New(666, CvMUTEXP(GvCV(gv)), 1, perl_mutex);
MUTEX_INIT(CvMUTEXP(GvCV(gv)));
}
#endif /* USE_THREADS */
if (proto) {
sv_setpv((SV*)GvCV(gv), proto);
Safefree(proto);
}
}
}
开发者ID:fduhia，项目名称:metamage_1，代码行数:54，代码来源:gv.c
示例8: THX_MopMcV_get_method
SV* THX_MopMcV_get_method(pTHX_ SV* metaclass, SV* name) {
HV* stash = (HV*) SvRV(metaclass);
HE* method_gv_he = hv_fetch_ent(stash, name, 0, 0);
if (method_gv_he != NULL) {
GV* method_gv = (GV*) HeVAL(method_gv_he);
CV* method = GvCV(method_gv);
if (method != NULL && GvSTASH(CvGV(method)) == stash) {
return newRV_inc((SV*) method);
}
}
return NULL;
}
开发者ID:stevan，项目名称:p5-mop-XS，代码行数:14，代码来源:p5mop_class.c
示例9: THX_MopMcV_has_method
bool THX_MopMcV_has_method(pTHX_ SV* metaclass, SV* name) {
HV* stash = (HV*) SvRV(metaclass);
HE* method_gv_he = hv_fetch_ent(stash, name, 0, 0);
if (method_gv_he != NULL) {
GV* method_gv = (GV*) HeVAL(method_gv_he);
CV* method = GvCV(method_gv);
if (method != NULL && GvSTASH(CvGV(method)) == stash) {
return TRUE;
}
}
return FALSE;
}
开发者ID:stevan，项目名称:p5-mop-XS，代码行数:14，代码来源:p5mop_class.c
示例10: S_croak_xs_usage
STATIC void
S_croak_xs_usage(pTHX_ const CV *const cv, const char *const params)
{
const GV *const gv = CvGV(cv);
PERL_ARGS_ASSERT_CROAK_XS_USAGE;
if (gv) {
const char *const gvname = GvNAME(gv);
const HV *const stash = GvSTASH(gv);
const char *const hvname = stash ? HvNAME(stash) : NULL;
if (hvname)
Perl_croak(aTHX_ "Usage: %s::%s(%s)", hvname, gvname, params);
else
Perl_croak(aTHX_ "Usage: %s(%s)", gvname, params);
} else {
/* Pants. I don't think that it should be possible to get here. */
Perl_croak(aTHX_ "Usage: CODE(0x%"UVxf")(%s)", PTR2UV(cv), params);
}
}
开发者ID:macholic，项目名称:perl5，代码行数:21，代码来源:Byte.c
示例11: hv_delete
SV *PerlIONginxError_newhandle(pTHX_ ngx_http_request_t *r)
{
GV *gv = (GV*)SvREFCNT_inc(newGVgen("Nginx::PSGI::Error"));
if (!gv)
return &PL_sv_undef;
(void) hv_delete(GvSTASH(gv), GvNAME(gv), GvNAMELEN(gv), G_DISCARD);
PerlIO *f = PerlIO_allocate(aTHX);
if (!(f = PerlIO_push(aTHX_ f, PERLIO_FUNCS_CAST(&PerlIO_nginx_error), ">", NULL)) ) {
return &PL_sv_undef;
}
if (!do_open(gv, "+>&", 3, FALSE, O_WRONLY, 0, f)) {
return &PL_sv_undef;
}
PerlIONginxError *st = PerlIOSelf(f, PerlIONginxError);
st->log = r->connection->log;
return newRV_noinc((SV*)gv);
}
开发者ID:envi，项目名称:ngx_mod_psgi，代码行数:22，代码来源:ngx_http_psgi_error_stream.c
示例12: modperl_package_clear_stash
static void modperl_package_clear_stash(pTHX_ const char *package)
{
HV *stash;
if ((stash = gv_stashpv(package, FALSE))) {
HE *he;
I32 len;
char *key;
hv_iterinit(stash);
while ((he = hv_iternext(stash))) {
key = hv_iterkey(he, &len);
if (MP_SAFE_STASH(key, len)) {
SV *val = hv_iterval(stash, he);
/* The safe thing to do is to skip over stash entries
* that don't come from the package we are trying to
* unload
*/
if (GvSTASH(val) == stash) {
(void)hv_delete(stash, key, len, G_DISCARD);
}
}
}
}
}
开发者ID:gitpan，项目名称:mod_perl，代码行数:23，代码来源:modperl_util.c
示例13: Perl_gv_autoload4
GV*
Perl_gv_autoload4(pTHX_ HV *stash, const char *name, STRLEN len, I32 method)
{
char autoload[] = "AUTOLOAD";
STRLEN autolen = sizeof(autoload)-1;
GV* gv;
CV* cv;
HV* varstash;
GV* vargv;
SV* varsv;
char *packname = "";
if (len == autolen && strnEQ(name, autoload, autolen))
return Nullgv;
if (stash) {
if (SvTYPE(stash) < SVt_PVHV) {
packname = SvPV_nolen((SV*)stash);
stash = Nullhv;
}
else {
packname = HvNAME(stash);
}
}
if (!(gv = gv_fetchmeth(stash, autoload, autolen, FALSE)))
return Nullgv;
cv = GvCV(gv);
if (!(CvROOT(cv) || CvXSUB(cv)))
return Nullgv;
/*
* Inheriting AUTOLOAD for non-methods works ... for now.
*/
if (ckWARN2(WARN_DEPRECATED, WARN_SYNTAX) && !method &&
(GvCVGEN(gv) || GvSTASH(gv) != stash))
Perl_warner(aTHX_ packWARN2(WARN_DEPRECATED, WARN_SYNTAX),
"Use of inherited AUTOLOAD for non-method %s::%.*s() is deprecated",
packname, (int)len, name);
if (CvXSUB(cv)) {
/* rather than lookup/init $AUTOLOAD here
* only to have the XSUB do another lookup for $AUTOLOAD
* and split that value on the last '::',
* pass along the same data via some unused fields in the CV
*/
CvSTASH(cv) = stash;
SvPVX(cv) = (char *)name; /* cast to lose constness warning */
SvCUR(cv) = len;
return gv;
}
/*
* Given &FOO::AUTOLOAD, set $FOO::AUTOLOAD to desired function name.
* The subroutine's original name may not be "AUTOLOAD", so we don't
* use that, but for lack of anything better we will use the sub's
* original package to look up $AUTOLOAD.
*/
varstash = GvSTASH(CvGV(cv));
vargv = *(GV**)hv_fetch(varstash, autoload, autolen, TRUE);
ENTER;
if (!isGV(vargv))
gv_init(vargv, varstash, autoload, autolen, FALSE);
LEAVE;
varsv = GvSV(vargv);
sv_setpv(varsv, packname);
sv_catpvn(varsv, "::", 2);
sv_catpvn(varsv, name, len);
SvTAINTED_off(varsv);
return gv;
}
开发者ID:gitpan，项目名称:ponie，代码行数:71，代码来源:gv.c
示例14: Perl_gv_fetchmethod_autoload
GV *
Perl_gv_fetchmethod_autoload(pTHX_ HV *stash, const char *name, I32 autoload)
{
register const char *nend;
const char *nsplit = 0;
GV* gv;
HV* ostash = stash;
if (stash && SvTYPE(stash) < SVt_PVHV)
stash = Nullhv;
for (nend = name; *nend; nend++) {
if (*nend == '\'')
nsplit = nend;
else if (*nend == ':' && *(nend + 1) == ':')
nsplit = ++nend;
}
if (nsplit) {
const char *origname = name;
name = nsplit + 1;
if (*nsplit == ':')
--nsplit;
if ((nsplit - origname) == 5 && strnEQ(origname, "SUPER", 5)) {
/* ->SUPER::method should really be looked up in original stash */
SV *tmpstr = sv_2mortal(Perl_newSVpvf(aTHX_ "%s::SUPER",
CopSTASHPV(PL_curcop)));
/* __PACKAGE__::SUPER stash should be autovivified */
stash = gv_stashpvn(SvPVX(tmpstr), SvCUR(tmpstr), TRUE);
DEBUG_o( Perl_deb(aTHX_ "Treating %s as %s::%s\n",
origname, HvNAME(stash), name) );
}
else {
/* don't autovifify if ->NoSuchStash::method */
stash = gv_stashpvn(origname, nsplit - origname, FALSE);
/* however, explicit calls to Pkg::SUPER::method may
happen, and may require autovivification to work */
if (!stash && (nsplit - origname) >= 7 &&
strnEQ(nsplit - 7, "::SUPER", 7) &&
gv_stashpvn(origname, nsplit - origname - 7, FALSE))
stash = gv_stashpvn(origname, nsplit - origname, TRUE);
}
ostash = stash;
}
gv = gv_fetchmeth(stash, name, nend - name, 0);
if (!gv) {
if (strEQ(name,"import") || strEQ(name,"unimport"))
gv = (GV*)&PL_sv_yes;
else if (autoload)
gv = gv_autoload4(ostash, name, nend - name, TRUE);
}
else if (autoload) {
CV* cv = GvCV(gv);
if (!CvROOT(cv) && !CvXSUB(cv)) {
GV* stubgv;
GV* autogv;
if (CvANON(cv))
stubgv = gv;
else {
stubgv = CvGV(cv);
if (GvCV(stubgv) != cv) /* orphaned import */
stubgv = gv;
}
autogv = gv_autoload4(GvSTASH(stubgv),
GvNAME(stubgv), GvNAMELEN(stubgv), TRUE);
if (autogv)
gv = autogv;
}
}
return gv;
}
开发者ID:gitpan，项目名称:ponie，代码行数:74，代码来源:gv.c
示例15: c_test
void c_test (int max){
int i;
for (f=1)
}
#line 23 "ko_6_1_0_perllint_01cc.c"
#ifndef PERL_UNUSED_VAR
# define PERL_UNUSED_VAR(var) if (0) var = var
#endif
#ifndef PERL_ARGS_ASSERT_CROAK_XS_USAGE
#define PERL_ARGS_ASSERT_CROAK_XS_USAGE assert(cv); assert(params)
/* prototype to pass -Wmissing-prototypes */
STATIC void
S_croak_xs_usage(pTHX_ const CV *const cv, const char *const params);
STATIC void
S_croak_xs_usage(pTHX_ const CV *const cv, const char *const params)
{
const GV *const gv = CvGV(cv);
PERL_ARGS_ASSERT_CROAK_XS_USAGE;
if (gv) {
const char *const gvname = GvNAME(gv);
const HV *const stash = GvSTASH(gv);
const char *const hvname = stash ? HvNAME(stash) : NULL;
if (hvname)
Perl_croak(aTHX_ "Usage: %s::%s(%s)", hvname, gvname, params);
else
Perl_croak(aTHX_ "Usage: %s(%s)", gvname, params);
} else {
/* Pants. I don't think that it should be possible to get here. */
Perl_croak(aTHX_ "Usage: CODE(0x%"UVxf")(%s)", PTR2UV(cv), params);
}
}
#undef PERL_ARGS_ASSERT_CROAK_XS_USAGE
#ifdef PERL_IMPLICIT_CONTEXT
#define croak_xs_usage(a,b) S_croak_xs_usage(aTHX_ a,b)
#else
#define croak_xs_usage S_croak_xs_usage
#endif
#endif
/* NOTE: the prototype of newXSproto() is different in versions of perls,
* so we define a portable version of newXSproto()
*/
#ifdef newXS_flags
#define newXSproto_portable(name, c_impl, file, proto) newXS_flags(name, c_impl, file, proto, 0)
#else
#define newXSproto_portable(name, c_impl, file, proto) (PL_Sv=(SV*)newXS(name, c_impl, file), sv_setpv(PL_Sv, proto), (CV*)PL_Sv)
#endif /* !defined(newXS_flags) */
#line 75 "ko_6_1_0_perllint_01cc.c"
XS(XS_main_c_test); /* prototype to pass -Wmissing-prototypes */
XS(XS_main_c_test)
{
#ifdef dVAR
dVAR; dXSARGS;
#else
dXSARGS;
#endif
if (items != 1)
croak_xs_usage(cv, "max");
PERL_UNUSED_VAR(ax); /* -Wall */
SP -= items;
{
int max = (int)SvIV(ST(0));
#line 22 "ko_6_1_0_perllint_01cc.xs"
I32* temp;
#line 93 "ko_6_1_0_perllint_01cc.c"
#line 24 "ko_6_1_0_perllint_01cc.xs"
temp = PL_markstack_ptr++;
c_test(max);
if (PL_markstack_ptr != temp) {
/* truly void, because dXSARGS not invoked */
PL_markstack_ptr = temp;
XSRETURN_EMPTY; /* return empty stack */
}
/* must have used dXSARGS; list context implied */
return; /* assume stack size is correct */
#line 104 "ko_6_1_0_perllint_01cc.c"
PUTBACK;
return;
}
}
#ifdef __cplusplus
extern "C"
#endif
XS(boot_ko_6_1_0_perllint_01cc); /* prototype to pass -Wmissing-prototypes */
XS(boot_ko_6_1_0_perllint_01cc)
{
//.........这里部分代码省略.........
开发者ID:motomatt69，项目名称:perl5lib_mho，代码行数:101，代码来源:ko_6_1_0_perllint_01cc.c
示例16: names
/*
=for apidoc mro_package_moved
Call this function to signal to a stash that it has been assigned to
another spot in the stash hierarchy. C<stash> is the stash that has been
assigned. C<oldstash> is the stash it replaces, if any. C<gv> is the glob
that is actually being assigned to.
This can also be called with a null first argument to
indicate that C<oldstash> has been deleted.
This function invalidates isa caches on the old stash, on all subpackages
nested inside it, and on the subclasses of all those, including
non-existent packages that have corresponding entries in C<stash>.
It also sets the effective names (C<HvENAME>) on all the stashes as
appropriate.
If the C<gv> is present and is not in the symbol table, then this function
simply returns. This checked will be skipped if C<flags & 1>.
=cut
*/
void
Perl_mro_package_moved(pTHX_ HV * const stash, HV * const oldstash,
const GV * const gv, U32 flags)
{
SV *namesv;
HEK **namep;
I32 name_count;
HV *stashes;
HE* iter;
PERL_ARGS_ASSERT_MRO_PACKAGE_MOVED;
assert(stash || oldstash);
/* Determine the name(s) of the location that stash was assigned to
* or from which oldstash was removed.
*
* We cannot reliably use the name in oldstash, because it may have
* been deleted from the location in the symbol table that its name
* suggests, as in this case:
*
* $globref = \*foo::bar::;
* Symbol::delete_package("foo");
* *$globref = \%baz::;
* *$globref = *frelp::;
* # calls mro_package_moved(%frelp::, %baz::, *$globref, NULL, 0)
*
* So we get it from the gv. But, since the gv may no longer be in the
* symbol table, we check that first. The only reliable way to tell is
* to see whether its stash has an effective name and whether the gv
* resides in that stash under its name. That effective name may be
* different from what gv_fullname4 would use.
* If flags & 1, the caller has asked us to skip the check.
*/
if(!(flags & 1)) {
SV **svp;
if(
!GvSTASH(gv) || !HvENAME(GvSTASH(gv)) ||
!(svp = hv_fetchhek(GvSTASH(gv), GvNAME_HEK(gv), 0)) ||
*svp != (SV *)gv
) return;
}
assert(SvOOK(GvSTASH(gv)));
assert(GvNAMELEN(gv));
assert(GvNAME(gv)[GvNAMELEN(gv) - 1] == ':');
assert(GvNAMELEN(gv) == 1 || GvNAME(gv)[GvNAMELEN(gv) - 2] == ':');
name_count = HvAUX(GvSTASH(gv))->xhv_name_count;
if (!name_count) {
name_count = 1;
namep = &HvAUX(GvSTASH(gv))->xhv_name_u.xhvnameu_name;
}
else {
namep = HvAUX(GvSTASH(gv))->xhv_name_u.xhvnameu_names;
if (name_count < 0) ++namep, name_count = -name_count - 1;
}
if (name_count == 1) {
if (HEK_LEN(*namep) == 4 && strnEQ(HEK_KEY(*namep), "main", 4)) {
namesv = GvNAMELEN(gv) == 1
? newSVpvs_flags(":", SVs_TEMP)
: newSVpvs_flags("", SVs_TEMP);
}
else {
namesv = sv_2mortal(newSVhek(*namep));
if (GvNAMELEN(gv) == 1) sv_catpvs(namesv, ":");
else sv_catpvs(namesv, "::");
}
if (GvNAMELEN(gv) != 1) {
sv_catpvn_flags(
namesv, GvNAME(gv), GvNAMELEN(gv) - 2,
/* skip trailing :: */
GvNAMEUTF8(gv) ? SV_CATUTF8 : SV_CATBYTES
);
}
}
else {
SV *aname;
namesv = sv_2mortal((SV *)newAV());
while (name_count--) {
//.........这里部分代码省略.........
开发者ID:greearb，项目名称:perl-5.23-3-ct，代码行数:101，代码来源:mro_core.c
注：本文中的GvSTASH函数示例由纯净天空整理自Github/MSDocs等源码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。 |
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