STDMETHODIMP RegMeta::EnumMethodSpecs(
HCORENUM *phEnum, // [IN|OUT] Pointer to the enum.
mdToken tkOwner, // [IN] MethodDef or MemberRef whose MethodSpecs are requested
mdMethodSpec rTokens[], // [OUT] Put MethodSpecs here.
ULONG cMaxTokens, // [IN] Max tokens to put.
ULONG *pcTokens) // [OUT] Put actual count here.
{
HRESULT hr = S_OK;
BEGIN_ENTRYPOINT_NOTHROW;
HENUMInternal **ppmdEnum = reinterpret_cast<HENUMInternal **> (phEnum);
ULONG ridStart;
ULONG ridEnd;
HENUMInternal *pEnum;
MethodSpecRec *pRec;
ULONG index;
CMiniMdRW *pMiniMd = NULL;
LOG((LOGMD, "RegMeta::EnumMethodSpecs(0x%08x, 0x%08x, 0x%08x, 0x%08x, 0x%08x)\n",
phEnum, tkOwner, rTokens, cMaxTokens, pcTokens));
START_MD_PERF();
LOCKREAD();
pMiniMd = &(m_pStgdb->m_MiniMd);
// See if this version of the metadata can do Generics
if (!pMiniMd->SupportsGenerics())
{
if (pcTokens)
*pcTokens = 0;
hr = S_FALSE;
goto ErrExit;
}
_ASSERTE(RidFromToken(tkOwner)==0 || TypeFromToken(tkOwner) == mdtMethodDef || TypeFromToken(tkOwner) == mdtMemberRef);
if ( *ppmdEnum == 0 )
{
// instantiating a new ENUM
if(RidFromToken(tkOwner)==0) // enumerate all MethodSpecs
{
ridStart = 1;
ridEnd = pMiniMd->getCountMethodSpecs() + 1;
IfFailGo( HENUMInternal::CreateSimpleEnum( mdtMethodSpec, ridStart, ridEnd, &pEnum) );
}
else
{
//@todo GENERICS: review this. Are we expecting a sorted table or not?
if ( pMiniMd->IsSorted( TBL_MethodSpec ) )
{
if (TypeFromToken(tkOwner) == mdtMemberRef)
{
IfFailGo(pMiniMd->getMethodSpecsForMemberRef(RidFromToken(tkOwner), &ridEnd, &ridStart));
}
else
{
IfFailGo(pMiniMd->getMethodSpecsForMethodDef(RidFromToken(tkOwner), &ridEnd, &ridStart));
}
IfFailGo( HENUMInternal::CreateSimpleEnum(mdtMethodSpec, ridStart, ridEnd, &pEnum) );
}
else
{
// table is not sorted so we have to create dynamic array
// create the dynamic enumerator
//
ridStart = 1;
ridEnd = pMiniMd->getCountMethodSpecs() + 1;
IfFailGo( HENUMInternal::CreateDynamicArrayEnum(mdtMethodSpec, &pEnum) );
for (index = ridStart; index < ridEnd; index ++ )
{
IfFailGo(pMiniMd->GetMethodSpecRecord(index, &pRec));
if ( tkOwner == pMiniMd->getMethodOfMethodSpec(pRec) )
{
IfFailGo( HENUMInternal::AddElementToEnum(pEnum, TokenFromRid(index, mdtMethodSpec) ) );
}
}
}
}
// set the output parameter
*ppmdEnum = pEnum;
}
else
{
pEnum = *ppmdEnum;
}
// fill the output token buffer
hr = HENUMInternal::EnumWithCount(pEnum, cMaxTokens, rTokens, pcTokens);
ErrExit:
HENUMInternal::DestroyEnumIfEmpty(ppmdEnum);
STOP_MD_PERF(EnumMethodSpecs);
END_ENTRYPOINT_NOTHROW;
return hr;
} // STDMETHODIMP RegMeta::EnumMethodSpecs()
