//*****************************************************************************
// Enumerate Sym.InterfaceImpl where Coclass == td
//*****************************************************************************
STDMETHODIMP RegMeta::EnumInterfaceImpls(
HCORENUM *phEnum, // Pointer to the enum.
mdTypeDef td, // TypeDef to scope the enumeration.
mdInterfaceImpl rImpls[], // Put InterfaceImpls here.
ULONG cMax, // Max InterfaceImpls to put.
ULONG *pcImpls) // Put # put here.
{
HRESULT hr = S_OK;
BEGIN_ENTRYPOINT_NOTHROW;
HENUMInternal **ppmdEnum = reinterpret_cast<HENUMInternal **> (phEnum);
ULONG ridStart;
ULONG ridEnd;
HENUMInternal *pEnum;
InterfaceImplRec *pRec;
ULONG index;
LOG((LOGMD, "RegMeta::EnumInterfaceImpls(0x%08x, 0x%08x, 0x%08x, 0x%08x, 0x%08x)\n",
phEnum, td, rImpls, cMax, pcImpls));
START_MD_PERF();
LOCKREAD();
_ASSERTE(TypeFromToken(td) == mdtTypeDef);
if ( *ppmdEnum == 0 )
{
// instantiating a new ENUM
CMiniMdRW *pMiniMd = &(m_pStgdb->m_MiniMd);
if ( pMiniMd->IsSorted( TBL_InterfaceImpl ) )
{
IfFailGo(pMiniMd->getInterfaceImplsForTypeDef(RidFromToken(td), &ridEnd, &ridStart));
IfFailGo( HENUMInternal::CreateSimpleEnum( mdtInterfaceImpl, ridStart, ridEnd, &pEnum) );
}
else
{
// table is not sorted so we have to create dynmaic array
// create the dynamic enumerator
//
ridStart = 1;
ridEnd = pMiniMd->getCountInterfaceImpls() + 1;
IfFailGo( HENUMInternal::CreateDynamicArrayEnum( mdtInterfaceImpl, &pEnum) );
for (index = ridStart; index < ridEnd; index ++ )
{
IfFailGo(pMiniMd->GetInterfaceImplRecord(index, &pRec));
if ( td == pMiniMd->getClassOfInterfaceImpl(pRec) )
{
IfFailGo( HENUMInternal::AddElementToEnum(pEnum, TokenFromRid(index, mdtInterfaceImpl) ) );
}
}
}
// set the output parameter
*ppmdEnum = pEnum;
}
else
{
pEnum = *ppmdEnum;
}
// fill the output token buffer
hr = HENUMInternal::EnumWithCount(pEnum, cMax, rImpls, pcImpls);
ErrExit:
HENUMInternal::DestroyEnumIfEmpty(ppmdEnum);
STOP_MD_PERF(EnumInterfaceImpls);
END_ENTRYPOINT_NOTHROW;
return hr;
} // RegMeta::EnumInterfaceImpls
