ICSharpCode.NRefactory.CSharp.Completion.CSharpCompletionEngine.CreateTypeCompletionData C# (CSharp) Method

		IEnumerable<ICompletionData> CreateTypeCompletionData(IType hintType)
		{
			var wrapper = new CompletionDataWrapper(this);
			var state = GetState();
			Func<IType, IType> pred = null;
			Action<ICompletionData, IType> typeCallback = null;
			var inferredTypesCategory = new Category("Inferred Types", null);
			var derivedTypesCategory = new Category("Derived Types", null);
			
			if (hintType != null) {
				if (hintType.Kind != TypeKind.Unknown) {
					var lookup = new MemberLookup(
						ctx.CurrentTypeDefinition,
						Compilation.MainAssembly
					);
					typeCallback = (data, t) => {
						//check if type is in inheritance tree.
						if (hintType.GetDefinition() != null &&
							t.GetDefinition() != null &&
							t.GetDefinition().IsDerivedFrom(hintType.GetDefinition())) {
							data.CompletionCategory = derivedTypesCategory;
						}
					};
					pred = t => {
						if (t.Kind == TypeKind.Interface && hintType.Kind != TypeKind.Array) {
							return null;
						}
						// check for valid constructors
						if (t.GetConstructors().Count() > 0) {
							bool isProtectedAllowed = currentType != null ? 
								currentType.Resolve(ctx).GetDefinition().IsDerivedFrom(t.GetDefinition()) : 
									false;
							if (!t.GetConstructors().Any(m => lookup.IsAccessible(
								m,
								isProtectedAllowed
							)
							)) {
								return null;
							}
						}
						
						var typeInference = new TypeInference(Compilation);
						typeInference.Algorithm = TypeInferenceAlgorithm.ImprovedReturnAllResults;
						var inferedType = typeInference.FindTypeInBounds(
							new [] { t },
						new [] { hintType }
						);
						if (inferedType != SpecialType.UnknownType) {
							var newType = wrapper.AddType(inferedType, amb.ConvertType(inferedType));
							if (newType != null) {
								newType.CompletionCategory = inferredTypesCategory;
							}
							return null;
						}
						return t;
					};
					if (!(hintType.Kind == TypeKind.Interface && hintType.Kind != TypeKind.Array)) {
						DefaultCompletionString = GetShortType(hintType, GetState());
						var hint = wrapper.AddType(hintType, DefaultCompletionString);
						if (hint != null) {
							hint.CompletionCategory = derivedTypesCategory;
						}
					}
					if (hintType is ParameterizedType && hintType.TypeParameterCount == 1 && hintType.FullName == "System.Collections.Generic.IEnumerable") {
						var arg = ((ParameterizedType)hintType).TypeArguments.FirstOrDefault();
						var array = new ArrayTypeReference(arg.ToTypeReference(), 1).Resolve(ctx);
						wrapper.AddType(array, amb.ConvertType(array));
					}
				} else {
					var hint = wrapper.AddType(hintType, DefaultCompletionString);
					if (hint != null) {
						DefaultCompletionString = hint.DisplayText;
						hint.CompletionCategory = derivedTypesCategory;
					}
				}
			} 
			AddTypesAndNamespaces(wrapper, state, null, pred, m => false, typeCallback);
			if (hintType == null || hintType == SpecialType.UnknownType) {
				AddKeywords(wrapper, primitiveTypesKeywords.Where(k => k != "void"));
			}
			
			CloseOnSquareBrackets = true;
			AutoCompleteEmptyMatch = true;
			return wrapper.Result;
		}