port from perforce

intromat/Intromat/Nodes/Code/LiteralModelBase.cs

@@ -0,0 +1,34 @@
+using System.Xml.Serialization;
+using Intromat.Nodes.Textures;
+using Intromat.PersistentModel;
+
+namespace Intromat.Nodes.Code
+{
+    public enum ERelativeSource
+    {
+        Custom,
+        Parent,
+        Input
+    }
+
+    [XmlInclude(typeof(IntLiteralModel))]
+    [XmlInclude(typeof(StringLiteralModel))]
+    [XmlInclude(typeof(FloatLiteralModel))]
+    [XmlInclude(typeof(BooleanLiteralModel))]
+    [XmlInclude(typeof(SamplerLiteralModel))]
+    public abstract class LiteralModelBase : NodeModelBase
+    {
+        public ERelativeSource RelativeSource { get; set; }
+    }
+
+    public class LiteralModelEntry
+    {
+        public string Key { get; set; } = null!;
+        public LiteralModelBase Literal { get; set; } = null!;
+    }
+
+    public abstract class LiteralModelBase<T> : LiteralModelBase
+    {
+        public T Value { get; set; } = default!;
+    }
+}