//*****************************************************************************
// Check the given token to see if it has moved to a new location. If so,
// return true and give back the new token.
//*****************************************************************************
int CeeGenTokenMapper::HasTokenMoved(
mdToken tkFrom,
mdToken &tkTo)
{
mdToken tk;
int i = IndexForType(tkFrom);
if(i == -1) return false;
_ASSERTE(i < GetMaxMapSize());
TOKENMAP *pMap = &m_rgMap[i];
// Assume nothing moves.
tkTo = tkFrom;
// If the array is smaller than the index, can't have moved.
if ((ULONG) pMap->Count() <= RidFromToken(tkFrom))
return (false);
// If the entry is set to 0, then nothing there.
tk = *pMap->Get(RidFromToken(tkFrom));
if (tk == mdTokenNil)
return (false);
// Had to move to a new location, return that new location.
tkTo = tk;
return (true);
}
//*****************************************************************************
// cascading Mark of a MemberRef
//*****************************************************************************
HRESULT FilterManager::MarkMemberRef(mdMemberRef mr)
{
HRESULT hr = NOERROR;
MemberRefRec *pRec;
ULONG cbSize;
ULONG cbUsed;
PCCOR_SIGNATURE pbSig;
IHostFilter *pFilter = m_pMiniMd->GetHostFilter();
mdToken md;
TOKENMAP *tkMap;
mdToken tkParent;
// We know that the filter table is not null here. Tell PREFIX that we know it.
PREFIX_ASSUME(m_pMiniMd->GetFilterTable() != NULL);
// if MemberRef is already marked, just return
if (m_pMiniMd->GetFilterTable()->IsMemberRefMarked(mr))
goto ErrExit;
IfFailGo( m_pMiniMd->GetFilterTable()->MarkMemberRef( mr ) );
if (pFilter)
pFilter->MarkToken(mr);
IfFailGo(m_pMiniMd->GetMemberRefRecord(RidFromToken(mr), &pRec));
// we want to mark the parent of MemberRef as well
tkParent = m_pMiniMd->getClassOfMemberRef(pRec);
// If the parent is the global TypeDef, mark only the TypeDef itself (low-level function).
// Other parents, do the transitive mark (ie, the high-level function).
//
if (IsGlobalTypeDef(tkParent))
IfFailGo( m_pMiniMd->GetFilterTable()->MarkTypeDef( tkParent ) );
else
IfFailGo( Mark( tkParent ) );
// Walk the signature and mark all of the embedded types
IfFailGo(m_pMiniMd->getSignatureOfMemberRef(pRec, &pbSig, &cbSize));
IfFailGo( MarkSignature(pbSig, cbSize, &cbUsed) );
tkMap = m_pMiniMd->GetMemberRefToMemberDefMap();
PREFIX_ASSUME(tkMap != NULL);
md = *(tkMap->Get(RidFromToken(mr))); // can be fielddef or methoddef
if ( RidFromToken(md) != mdTokenNil )
{
// MemberRef is referring to either a FieldDef or MethodDef.
// If it is referring to MethodDef, we have fix the parent of MemberRef to be the MethodDef.
// However, if it is mapped to a FieldDef, the parent column does not track this information.
// Therefore we need to mark it explicitly.
//
IfFailGo( Mark(md) );
}
IfFailGo( MarkCustomAttributesWithParentToken(mr) );
ErrExit:
return hr;
} // HRESULT FilterManager::MarkMemberRef()
//*****************************************************************************
// cascading Mark of a TypeRef
//*****************************************************************************
HRESULT FilterManager::MarkTypeRef(mdTypeRef tr)
{
HRESULT hr = NOERROR;
TOKENMAP *tkMap;
mdTypeDef td;
IHostFilter *pFilter = m_pMiniMd->GetHostFilter();
TypeRefRec *pRec;
mdToken parentTk;
// We know that the filter table is not null here. Tell PREFIX that we know it.
PREFIX_ASSUME(m_pMiniMd->GetFilterTable() != NULL);
// if TypeRef is already marked, just return
if (m_pMiniMd->GetFilterTable()->IsTypeRefMarked(tr))
goto ErrExit;
IfFailGo( m_pMiniMd->GetFilterTable()->MarkTypeRef( tr ) );
if (pFilter)
pFilter->MarkToken(tr);
IfFailGo(m_pMiniMd->GetTypeRefRecord(RidFromToken(tr), &pRec));
parentTk = m_pMiniMd->getResolutionScopeOfTypeRef(pRec);
if ( RidFromToken(parentTk) )
{
IfFailGo( Mark( parentTk ) );
}
tkMap = m_pMiniMd->GetTypeRefToTypeDefMap();
PREFIX_ASSUME(tkMap != NULL);
td = *(tkMap->Get(RidFromToken(tr)));
if ( td != mdTokenNil )
{
// TypeRef is referring to a TypeDef within the same module.
// Mark the TypeDef as well.
//
IfFailGo( Mark(td) );
}
IfFailGo( MarkCustomAttributesWithParentToken(tr) );
ErrExit:
return hr;
} // HRESULT FilterManager::MarkTypeRef()
//*****************************************************************************
// Called by the meta data engine when a token is remapped to a new location.
// This value is recorded in the m_rgMap array based on type and rid of the
// from token value.
//*****************************************************************************
HRESULT STDMETHODCALLTYPE CeeGenTokenMapper::Map(
mdToken tkFrom,
mdToken tkTo)
{
HRESULT hr = S_OK;
mdToken *pToken = NULL;
ULONG ridFrom = 0;
TOKENMAP *pMap = NULL;
BEGIN_ENTRYPOINT_NOTHROW;
if ( IndexForType(tkFrom) == -1 )
{
// It is a type that we are not tracking, such as mdtProperty or mdtEvent,
// just return S_OK.
goto ErrExit;
}
_ASSERTE(IndexForType(tkFrom) < GetMaxMapSize());
_ASSERTE(IndexForType(tkTo) != -1 && IndexForType(tkTo) < GetMaxMapSize());
// If there is another token mapper that the user wants called, go
// ahead and call it now.
if (m_pIMapToken)
m_pIMapToken->Map(tkFrom, tkTo);
ridFrom = RidFromToken(tkFrom);
pMap = &m_rgMap[IndexForType(tkFrom)];
// If there isn't enough entries, fill out array up to the count
// and mark the token to nil so we know there is no valid data yet.
if ((ULONG) pMap->Count() <= ridFrom)
{
for (int i=ridFrom - pMap->Count() + 1; i; i--)
{
pToken = pMap->Append();
if (!pToken)
break;
*pToken = mdTokenNil;
}
_ASSERTE(!pToken || pMap->Get(ridFrom) == pToken);
}
else
pToken = pMap->Get(ridFrom);
IfNullGo(pToken);
*pToken = tkTo;
ErrExit:
END_ENTRYPOINT_NOTHROW;
return hr;
}
