Added placeholders for type casts

src/core/CompileCall.go

@@ -52,6 +52,17 @@ func (f *Function) CompileCall(root *expression.Expression) ([]types.Type, error
 	fn, exists = f.All.Functions[pkg+"."+name]
 
 	if !exists {
+		typ := types.ByName(name, f.Package, f.All.Structs)
+
+		if typ != nil {
+			if len(root.Children) != 2 {
+				return nil, errors.New(&errors.ParameterCountMismatch{Function: name, Count: len(root.Children), ExpectedCount: 1}, f.File, nameNode.Token.End())
+			}
+
+			_, err := f.ExpressionToRegister(root.Children[1], f.CPU.Output[0])
+			return []types.Type{typ}, err
+		}
+
 		return nil, errors.New(&errors.UnknownFunction{Name: name}, f.File, nameNode.Token.Position)
 	}