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);
}
internal TypeEnumMetaObject(ComTypeEnumDesc desc, Expression expression)
: base(expression, BindingRestrictions.Empty, desc)
{
_desc = desc;
}