STDMETHODIMP RegMeta::EnumGenericParamConstraints( HCORENUM *phEnum, // [IN|OUT] Pointer to the enum. mdGenericParam tkOwner, // [IN] GenericParam whose constraints are requested mdGenericParamConstraint rTokens[], // [OUT] Put GenericParamConstraints here. ULONG cMaxTokens, // [IN] Max GenericParamConstraints to put. ULONG *pcTokens) // [OUT] Put # of tokens here. { HRESULT hr = S_OK; BEGIN_ENTRYPOINT_NOTHROW; HENUMInternal **ppmdEnum = reinterpret_cast<HENUMInternal **> (phEnum); ULONG ridStart; ULONG ridEnd; HENUMInternal *pEnum; GenericParamConstraintRec *pRec; ULONG index; CMiniMdRW *pMiniMd = NULL; LOG((LOGMD, "RegMeta::EnumGenericParamConstraints(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); if(TypeFromToken(tkOwner) != mdtGenericParam) IfFailGo(META_E_BAD_INPUT_PARAMETER); // See if this version of the metadata can do Generics if (!pMiniMd->SupportsGenerics()) { if (pcTokens) *pcTokens = 0; hr = S_FALSE; goto ErrExit; } if ( *ppmdEnum == 0 ) { // instantiating a new ENUM //<TODO> GENERICS: review this. Are we expecting a sorted table or not? </TODO> if ( pMiniMd->IsSorted( TBL_GenericParamConstraint ) ) { IfFailGo(pMiniMd->getGenericParamConstraintsForGenericParam(RidFromToken(tkOwner), &ridEnd, &ridStart)); IfFailGo( HENUMInternal::CreateSimpleEnum(mdtGenericParamConstraint, ridStart, ridEnd, &pEnum) ); } else { // table is not sorted so we have to create dynamic array // create the dynamic enumerator // ridStart = 1; ridEnd = pMiniMd->getCountGenericParamConstraints() + 1; IfFailGo( HENUMInternal::CreateDynamicArrayEnum(mdtGenericParamConstraint, &pEnum)); for (index = ridStart; index < ridEnd; index ++ ) { IfFailGo(pMiniMd->GetGenericParamConstraintRecord(index, &pRec)); if ( tkOwner == pMiniMd->getOwnerOfGenericParamConstraint(pRec)) { IfFailGo( HENUMInternal::AddElementToEnum(pEnum, TokenFromRid(index, mdtGenericParamConstraint))); } } } // 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(EnumGenericParamConstraints); END_ENTRYPOINT_NOTHROW; return hr; }