Move arbitrary property operator to PropOp.

Assets/Cryville/Crtr/PropOp.cs

@@ -8,6 +8,15 @@ using RBeatTime = Cryville.Crtr.BeatTime;
 namespace Cryville.Crtr {
 	public abstract class PropOp : PdtOperator {
 		internal PropOp() : base(1) { }
+		public class Arbitrary : PropOp {
+			public int Name { get; set; }
+			protected override void Execute() {
+				var op = GetOperand(0);
+				var value = new byte[op.Length];
+				op.CopyTo(value, 0);
+				ChartPlayer.etor.ContextCascadeUpdate(Name, new PropSrc.Arbitrary(op.Type, value));
+			}
+		}
 		public class Boolean : PropOp {
 			readonly Action<bool> _cb;
 			public Boolean(Action<bool> cb) { _cb = cb; }

Assets/Cryville/Crtr/Ruleset.cs

@@ -58,16 +58,7 @@ namespace Cryville.Crtr {
 		}
 	}
 	public class Constraint {
-		class ArbitraryOp : PropOp {
+		static readonly PropOp.Arbitrary _arbop = new PropOp.Arbitrary();
-			public int name;
-			protected override void Execute() {
-				var op = GetOperand(0);
-				var value = new byte[op.Length];
-				op.CopyTo(value, 0);
-				ChartPlayer.etor.ContextCascadeUpdate(name, new PropSrc.Arbitrary(op.Type, value));
-			}
-		}
-		static readonly ArbitraryOp _arbop = new ArbitraryOp();
 		[ElementList]
 		public Dictionary<RulesetSelectors, Constraint> Elements = new Dictionary<RulesetSelectors, Constraint>();
 		[PropertyList]
@@ -96,7 +87,7 @@ namespace Cryville.Crtr {
 						etor.ContextSelfValue = null;
 						break;
 					case PropertyType.Variable:
-						_arbop.name = name;
+						_arbop.Name = name;
 						etor.Evaluate(_arbop, prop.Value);
 						break;
 					default: throw new NotSupportedException("Unknown property key type");