internal ComTypeDesc(ITypeInfo typeInfo, ComTypeLibDesc typeLibDesc)
{
if (typeInfo != null)
{
ComRuntimeHelpers.GetInfoFromType(typeInfo, out _typeName, out _documentation);
}
TypeLib = typeLibDesc;
}
internal override Expression MarshalToRef(Expression parameter)
{
parameter = Marshal(parameter);
// parameter == null ? IntPtr.Zero : Marshal.GetIDispatchForObject(parameter);
return(Expression.Condition(
Expression.Equal(parameter, Expression.Constant(null)),
Expression.Constant(IntPtr.Zero),
Expression.Call(
ComRuntimeHelpers.GetGetIDispatchForObjectMethod(),
parameter
)
));
}
private void AddInterface(ComTypes.ITypeInfo itfTypeInfo, bool isSourceItf)
{
string itfName = ComRuntimeHelpers.GetNameOfType(itfTypeInfo);
if (isSourceItf)
{
_sourceItfs ??= new LinkedList <string>();
_sourceItfs.AddLast(itfName);
}
else
{
_itfs ??= new LinkedList <string>();
_itfs.AddLast(itfName);
}
}
private static void ScanSourceInterface(ComTypes.ITypeInfo sourceTypeInfo, ref Dictionary <string, ComEventDesc> events)
{
ComTypes.TYPEATTR sourceTypeAttribute = ComRuntimeHelpers.GetTypeAttrForTypeInfo(sourceTypeInfo);
for (int index = 0; index < sourceTypeAttribute.cFuncs; index++)
{
IntPtr funcDescHandleToRelease = IntPtr.Zero;
try
{
GetFuncDescForDescIndex(sourceTypeInfo, index, out ComTypes.FUNCDESC funcDesc, out funcDescHandleToRelease);
// we are not interested in hidden or restricted functions for now.
if ((funcDesc.wFuncFlags & (int)ComTypes.FUNCFLAGS.FUNCFLAG_FHIDDEN) != 0)
{
continue;
}
if ((funcDesc.wFuncFlags & (int)ComTypes.FUNCFLAGS.FUNCFLAG_FRESTRICTED) != 0)
{
continue;
}
string name = ComRuntimeHelpers.GetNameOfMethod(sourceTypeInfo, funcDesc.memid);
name = name.ToUpper(System.Globalization.CultureInfo.InvariantCulture);
// Sometimes coclass has multiple source interfaces. Usually this is caused by
// adding new events and putting them on new interfaces while keeping the
// old interfaces around. This may cause name collisioning which we are
// resolving by keeping only the first event with the same name.
if (!events.ContainsKey(name))
{
ComEventDesc eventDesc = new ComEventDesc
{
Dispid = funcDesc.memid,
SourceIID = sourceTypeAttribute.guid
};
events.Add(name, eventDesc);
}
}
finally
{
if (funcDescHandleToRelease != IntPtr.Zero)
{
sourceTypeInfo.ReleaseFuncDesc(funcDescHandleToRelease);
}
}
}
}
internal ComTypeClassDesc(ComTypes.ITypeInfo typeInfo, ComTypeLibDesc typeLibDesc) :
base(typeInfo, typeLibDesc)
{
ComTypes.TYPEATTR typeAttr = ComRuntimeHelpers.GetTypeAttrForTypeInfo(typeInfo);
Guid = typeAttr.guid;
for (int i = 0; i < typeAttr.cImplTypes; i++)
{
typeInfo.GetRefTypeOfImplType(i, out int hRefType);
typeInfo.GetRefTypeInfo(hRefType, out ComTypes.ITypeInfo currentTypeInfo);
typeInfo.GetImplTypeFlags(i, out ComTypes.IMPLTYPEFLAGS implTypeFlags);
bool isSourceItf = (implTypeFlags & ComTypes.IMPLTYPEFLAGS.IMPLTYPEFLAG_FSOURCE) != 0;
AddInterface(currentTypeInfo, isSourceItf);
}
}
private static ComTypes.ITypeInfo GetCoClassTypeInfo(object rcw, ComTypes.ITypeInfo typeInfo)
{
Debug.Assert(typeInfo != null);
if (rcw is IProvideClassInfo provideClassInfo)
{
IntPtr typeInfoPtr = IntPtr.Zero;
try
{
provideClassInfo.GetClassInfo(out typeInfoPtr);
if (typeInfoPtr != IntPtr.Zero)
{
return(Marshal.GetObjectForIUnknown(typeInfoPtr) as ComTypes.ITypeInfo);
}
}
finally
{
if (typeInfoPtr != IntPtr.Zero)
{
Marshal.Release(typeInfoPtr);
}
}
}
// retrieving class information through IPCI has failed -
// we can try scanning the typelib to find the coclass
typeInfo.GetContainingTypeLib(out ComTypes.ITypeLib typeLib, out int _);
string typeName = ComRuntimeHelpers.GetNameOfType(typeInfo);
ComTypeLibDesc typeLibDesc = ComTypeLibDesc.GetFromTypeLib(typeLib);
ComTypeClassDesc coclassDesc = typeLibDesc.GetCoClassForInterface(typeName);
if (coclassDesc == null)
{
return(null);
}
Guid coclassGuid = coclassDesc.Guid;
typeLib.GetTypeInfoOfGuid(ref coclassGuid, out ComTypes.ITypeInfo typeInfoCoClass);
return(typeInfoCoClass);
}
internal ComTypeEnumDesc(ComTypes.ITypeInfo typeInfo, ComTypeLibDesc typeLibDesc) :
base(typeInfo, typeLibDesc)
{
ComTypes.TYPEATTR typeAttr = ComRuntimeHelpers.GetTypeAttrForTypeInfo(typeInfo);
string[] memberNames = new string[typeAttr.cVars];
object[] memberValues = new object[typeAttr.cVars];
IntPtr p;
// For each enum member get name and value.
for (int i = 0; i < typeAttr.cVars; i++)
{
typeInfo.GetVarDesc(i, out p);
// Get the enum member value (as object).
ComTypes.VARDESC varDesc;
try
{
varDesc = (ComTypes.VARDESC)Marshal.PtrToStructure(p, typeof(ComTypes.VARDESC));
if (varDesc.varkind == ComTypes.VARKIND.VAR_CONST)
{
memberValues[i] = Marshal.GetObjectForNativeVariant(varDesc.desc.lpvarValue);
}
}
finally
{
typeInfo.ReleaseVarDesc(p);
}
// Get the enum member name
memberNames[i] = ComRuntimeHelpers.GetNameOfMethod(typeInfo, varDesc.memid);
}
_memberNames = memberNames;
_memberValues = memberValues;
}
internal static ComTypeLibDesc GetFromTypeLib(ComTypes.ITypeLib typeLib)
{
// check whether we have already loaded this type library
ComTypes.TYPELIBATTR typeLibAttr = ComRuntimeHelpers.GetTypeAttrForTypeLib(typeLib);
ComTypeLibDesc typeLibDesc;
lock (s_cachedTypeLibDesc)
{
if (s_cachedTypeLibDesc.TryGetValue(typeLibAttr.guid, out typeLibDesc))
{
return(typeLibDesc);
}
}
typeLibDesc = new ComTypeLibDesc
{
Name = ComRuntimeHelpers.GetNameOfLib(typeLib),
_typeLibAttributes = typeLibAttr
};
int countTypes = typeLib.GetTypeInfoCount();
for (int i = 0; i < countTypes; i++)
{
typeLib.GetTypeInfoType(i, out ComTypes.TYPEKIND typeKind);
typeLib.GetTypeInfo(i, out ComTypes.ITypeInfo typeInfo);
if (typeKind == ComTypes.TYPEKIND.TKIND_COCLASS)
{
ComTypeClassDesc classDesc = new ComTypeClassDesc(typeInfo, typeLibDesc);
typeLibDesc._classes.AddLast(classDesc);
}
else if (typeKind == ComTypes.TYPEKIND.TKIND_ENUM)
{
ComTypeEnumDesc enumDesc = new ComTypeEnumDesc(typeInfo, typeLibDesc);
typeLibDesc._enums.Add(enumDesc.TypeName, enumDesc);
}
else if (typeKind == ComTypes.TYPEKIND.TKIND_ALIAS)
{
ComTypes.TYPEATTR typeAttr = ComRuntimeHelpers.GetTypeAttrForTypeInfo(typeInfo);
if (typeAttr.tdescAlias.vt == (short)VarEnum.VT_USERDEFINED)
{
ComRuntimeHelpers.GetInfoFromType(typeInfo, out string aliasName, out _);
typeInfo.GetRefTypeInfo(typeAttr.tdescAlias.lpValue.ToInt32(), out ComTypes.ITypeInfo referencedTypeInfo);
ComTypes.TYPEATTR referencedTypeAttr = ComRuntimeHelpers.GetTypeAttrForTypeInfo(referencedTypeInfo);
ComTypes.TYPEKIND referencedTypeKind = referencedTypeAttr.typekind;
if (referencedTypeKind == ComTypes.TYPEKIND.TKIND_ENUM)
{
ComTypeEnumDesc enumDesc = new ComTypeEnumDesc(referencedTypeInfo, typeLibDesc);
typeLibDesc._enums.Add(aliasName, enumDesc);
}
}
}
}
// cached the typelib using the guid as the dictionary key
lock (s_cachedTypeLibDesc)
{
s_cachedTypeLibDesc.Add(typeLibAttr.guid, typeLibDesc);
}
return(typeLibDesc);
}
private void EnsureScanDefinedMethods()
{
if (_comTypeDesc?.Funcs != null)
{
return;
}
ComTypes.ITypeInfo typeInfo = ComRuntimeHelpers.GetITypeInfoFromIDispatch(DispatchObject);
if (typeInfo == null)
{
_comTypeDesc = ComTypeDesc.CreateEmptyTypeDesc();
return;
}
ComTypes.TYPEATTR typeAttr = ComRuntimeHelpers.GetTypeAttrForTypeInfo(typeInfo);
if (_comTypeDesc == null)
{
lock (s_cacheComTypeDesc)
{
if (s_cacheComTypeDesc.TryGetValue(typeAttr.guid, out _comTypeDesc) &&
_comTypeDesc.Funcs != null)
{
return;
}
}
}
ComTypeDesc typeDesc = ComTypeDesc.FromITypeInfo(typeInfo, typeAttr);
ComMethodDesc getItem = null;
ComMethodDesc setItem = null;
Hashtable funcs = new Hashtable(typeAttr.cFuncs);
Hashtable puts = new Hashtable();
Hashtable putrefs = new Hashtable();
for (int definedFuncIndex = 0; definedFuncIndex < typeAttr.cFuncs; definedFuncIndex++)
{
IntPtr funcDescHandleToRelease = IntPtr.Zero;
try
{
GetFuncDescForDescIndex(typeInfo, definedFuncIndex, out ComTypes.FUNCDESC funcDesc, out funcDescHandleToRelease);
if ((funcDesc.wFuncFlags & (int)ComTypes.FUNCFLAGS.FUNCFLAG_FRESTRICTED) != 0)
{
// This function is not meant for the script user to use.
continue;
}
ComMethodDesc method = new ComMethodDesc(typeInfo, funcDesc);
string name = method.Name.ToUpper(CultureInfo.InvariantCulture);
if ((funcDesc.invkind & ComTypes.INVOKEKIND.INVOKE_PROPERTYPUT) != 0)
{
puts.Add(name, method);
// for the special dispId == 0, we need to store
// the method descriptor for the Do(SetItem) binder.
if (method.DispId == ComDispIds.DISPID_VALUE && setItem == null)
{
setItem = method;
}
continue;
}
if ((funcDesc.invkind & ComTypes.INVOKEKIND.INVOKE_PROPERTYPUTREF) != 0)
{
putrefs.Add(name, method);
// for the special dispId == 0, we need to store
// the method descriptor for the Do(SetItem) binder.
if (method.DispId == ComDispIds.DISPID_VALUE && setItem == null)
{
setItem = method;
}
continue;
}
if (funcDesc.memid == ComDispIds.DISPID_NEWENUM)
{
funcs.Add("GETENUMERATOR", method);
continue;
}
funcs.Add(name, method);
// for the special dispId == 0, we need to store the method descriptor
// for the Do(GetItem) binder.
if (funcDesc.memid == ComDispIds.DISPID_VALUE)
{
getItem = method;
}
}
finally
{
if (funcDescHandleToRelease != IntPtr.Zero)
{
typeInfo.ReleaseFuncDesc(funcDescHandleToRelease);
}
}
}
lock (s_cacheComTypeDesc)
{
if (s_cacheComTypeDesc.TryGetValue(typeAttr.guid, out ComTypeDesc cachedTypeDesc))
{
_comTypeDesc = cachedTypeDesc;
}
else
{
_comTypeDesc = typeDesc;
s_cacheComTypeDesc.Add(typeAttr.guid, _comTypeDesc);
}
_comTypeDesc.Funcs = funcs;
_comTypeDesc.Puts = puts;
_comTypeDesc.PutRefs = putrefs;
_comTypeDesc.EnsureGetItem(getItem);
_comTypeDesc.EnsureSetItem(setItem);
}
}
private void EnsureScanDefinedEvents()
{
// _comTypeDesc.Events is null if we have not yet attempted
// to scan the object for events.
if (_comTypeDesc?.Events != null)
{
return;
}
// check type info in the type descriptions cache
ComTypes.ITypeInfo typeInfo = ComRuntimeHelpers.GetITypeInfoFromIDispatch(DispatchObject);
if (typeInfo == null)
{
_comTypeDesc = ComTypeDesc.CreateEmptyTypeDesc();
return;
}
ComTypes.TYPEATTR typeAttr = ComRuntimeHelpers.GetTypeAttrForTypeInfo(typeInfo);
if (_comTypeDesc == null)
{
lock (s_cacheComTypeDesc)
{
if (s_cacheComTypeDesc.TryGetValue(typeAttr.guid, out _comTypeDesc) &&
_comTypeDesc.Events != null)
{
return;
}
}
}
ComTypeDesc typeDesc = ComTypeDesc.FromITypeInfo(typeInfo, typeAttr);
ComTypes.ITypeInfo classTypeInfo;
Dictionary <string, ComEventDesc> events;
var cpc = RuntimeCallableWrapper as ComTypes.IConnectionPointContainer;
if (cpc == null)
{
// No ICPC - this object does not support events
events = ComTypeDesc.EmptyEvents;
}
else if ((classTypeInfo = GetCoClassTypeInfo(RuntimeCallableWrapper, typeInfo)) == null)
{
// no class info found - this object may support events
// but we could not discover those
events = ComTypeDesc.EmptyEvents;
}
else
{
events = new Dictionary <string, ComEventDesc>();
ComTypes.TYPEATTR classTypeAttr = ComRuntimeHelpers.GetTypeAttrForTypeInfo(classTypeInfo);
for (int i = 0; i < classTypeAttr.cImplTypes; i++)
{
classTypeInfo.GetRefTypeOfImplType(i, out int hRefType);
classTypeInfo.GetRefTypeInfo(hRefType, out ComTypes.ITypeInfo interfaceTypeInfo);
classTypeInfo.GetImplTypeFlags(i, out ComTypes.IMPLTYPEFLAGS flags);
if ((flags & ComTypes.IMPLTYPEFLAGS.IMPLTYPEFLAG_FSOURCE) != 0)
{
ScanSourceInterface(interfaceTypeInfo, ref events);
}
}
if (events.Count == 0)
{
events = ComTypeDesc.EmptyEvents;
}
}
lock (s_cacheComTypeDesc)
{
if (s_cacheComTypeDesc.TryGetValue(typeAttr.guid, out ComTypeDesc cachedTypeDesc))
{
_comTypeDesc = cachedTypeDesc;
}
else
{
_comTypeDesc = typeDesc;
s_cacheComTypeDesc.Add(typeAttr.guid, _comTypeDesc);
}
_comTypeDesc.Events = events;
}
}
/// <summary>
/// Create a stub for the target of the optimized lopop.
/// </summary>
/// <returns></returns>
private Expression MakeIDispatchInvokeTarget()
{
Debug.Assert(_varEnumSelector.VariantBuilders.Length == _totalExplicitArgs);
List <Expression> exprs = new List <Expression>
{
//
// _dispId = ((DispCallable)this).ComMethodDesc.DispId;
//
Expression.Assign(
DispIdVariable,
Expression.Property(_method, typeof(ComMethodDesc).GetProperty(nameof(ComMethodDesc.DispId)))
)
};
//
// _dispParams.rgvararg = RuntimeHelpers.UnsafeMethods.ConvertVariantByrefToPtr(ref _paramVariants._element0)
//
if (_totalExplicitArgs != 0)
{
exprs.Add(
Expression.Assign(
Expression.Field(
DispParamsVariable,
typeof(ComTypes.DISPPARAMS).GetField(nameof(ComTypes.DISPPARAMS.rgvarg))
),
Expression.Call(
typeof(UnsafeMethods).GetMethod(nameof(UnsafeMethods.ConvertVariantByrefToPtr)),
VariantArray.GetStructField(ParamVariantsVariable, 0)
)
)
);
}
//
// _dispParams.cArgs = <number_of_params>;
//
exprs.Add(
Expression.Assign(
Expression.Field(
DispParamsVariable,
typeof(ComTypes.DISPPARAMS).GetField(nameof(ComTypes.DISPPARAMS.cArgs))
),
Expression.Constant(_totalExplicitArgs)
)
);
if (_methodDesc.IsPropertyPut)
{
//
// dispParams.cNamedArgs = 1;
// dispParams.rgdispidNamedArgs = RuntimeHelpers.UnsafeMethods.GetNamedArgsForPropertyPut()
//
exprs.Add(
Expression.Assign(
Expression.Field(
DispParamsVariable,
typeof(ComTypes.DISPPARAMS).GetField(nameof(ComTypes.DISPPARAMS.cNamedArgs))
),
Expression.Constant(1)
)
);
exprs.Add(
Expression.Assign(
PropertyPutDispIdVariable,
Expression.Constant(ComDispIds.DISPID_PROPERTYPUT)
)
);
exprs.Add(
Expression.Assign(
Expression.Field(
DispParamsVariable,
typeof(ComTypes.DISPPARAMS).GetField(nameof(ComTypes.DISPPARAMS.rgdispidNamedArgs))
),
Expression.Call(
typeof(UnsafeMethods).GetMethod(nameof(UnsafeMethods.ConvertInt32ByrefToPtr)),
PropertyPutDispIdVariable
)
)
);
}
else
{
//
// _dispParams.cNamedArgs = N;
//
exprs.Add(
Expression.Assign(
Expression.Field(
DispParamsVariable,
typeof(ComTypes.DISPPARAMS).GetField(nameof(ComTypes.DISPPARAMS.cNamedArgs))
),
Expression.Constant(_keywordArgNames.Length)
)
);
}
//
// _dispatchObject = _dispatch
// _dispatchPointer = Marshal.GetIDispatchForObject(_dispatchObject);
//
exprs.Add(Expression.Assign(DispatchObjectVariable, _dispatch));
exprs.Add(
Expression.Assign(
DispatchPointerVariable,
Expression.Call(
ComRuntimeHelpers.GetGetIDispatchForObjectMethod(),
DispatchObjectVariable
)
)
);
Expression tryStatements = GenerateTryBlock();
Expression finallyStatements = GenerateFinallyBlock();
exprs.Add(Expression.TryFinally(tryStatements, finallyStatements));
exprs.Add(ReturnValueVariable);
var vars = new List <ParameterExpression>();
foreach (VariantBuilder variant in _varEnumSelector.VariantBuilders)
{
if (variant.TempVariable != null)
{
vars.Add(variant.TempVariable);
}
}
return(Expression.Block(vars, exprs));
}
