Fixed parser to include enumerations which don't have an identifier set.

src/Parser/Parser.cpp

@@ -1714,14 +1714,34 @@ CppSharp::AST::Enumeration^ Parser::WalkEnum(clang::EnumDecl* ED)
     assert(NS && "Expected a valid namespace");
 
     auto Name = marshalString<E_UTF8>(GetTagDeclName(ED));
-    auto E = NS->FindEnum(Name, /*Create=*/false);
+    CppSharp::AST::Enumeration^ E = nullptr;
+    if (!System::String::IsNullOrEmpty(Name))
+        E = NS->FindEnum(Name, /*Create=*/false);
+    else
+    {
+        // Enum with no identifier - try to find existing enum through enum items
+        for (auto it = ED->enumerator_begin(); it != ED->enumerator_end(); ++it)
+        {
+            EnumConstantDecl* ECD = (*it);
+            auto EnumItemName = marshalString<E_UTF8>(ECD->getNameAsString());
+            E = NS->FindEnumWithItem(EnumItemName);
+            break;
+        }
+    }
 
     if (E && !E->IsIncomplete)
         return E;
 
     if (!E)
     {
-        E = NS->FindEnum(Name, /*Create=*/true);
+        if (!System::String::IsNullOrEmpty(Name))
+            E = NS->FindEnum(Name, /*Create=*/true);
+        else
+        {
+            E = gcnew CppSharp::AST::Enumeration();
+            E->Namespace = NS;
+            NS->Enums->Add(E);
+        }
         HandleDeclaration(ED, E);
     }