Add project files.

Assets/Cryville/Crtr/RulesetInterpreter.cs

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+using Cryville.Common.Pdt;
+using System;
+using System.Collections.Generic;
+using System.Reflection;
+
+namespace Cryville.Crtr {
+	internal class RulesetInterpreter : PdtInterpreter<PdtRuleset> {
+		public RulesetInterpreter(string src, Binder binder) : base(src, binder) { }
+
+		readonly List<RulesetSelector> s = new List<RulesetSelector>();
+		readonly List<string> a = new List<string>();
+		protected override object InterpretKey(Type type) {
+			if (type == typeof(Constraint)) {
+				s.Clear(); a.Clear();
+				string key = "";
+				while (true) {
+					int pp = Position;
+					switch (cc) {
+						case '@':
+							GetChar();
+							a.Add(GetIdentifier());
+							key = null;
+							break;
+						case '$':
+							GetChar();
+							s.Add(new RulesetSelector.CreateItem());
+							key = null;
+							break;
+						case '#':
+							GetChar();
+							s.Add(new RulesetSelector.Index());
+							break;
+						case '>':
+							GetChar();
+							s.Add(new RulesetSelector.Property(GetExp()));
+							break;
+						case ';':
+						case ':':
+							return new PropertyKey(a.Contains("var") ? PropertyType.Variable : PropertyType.Property, key);
+						case '{':
+							return new RulesetSelectors(s);
+						case '}':
+							return null;
+						default:
+							var p4 = GetIdentifier();
+							s.Add(new RulesetSelector.EventType(p4));
+							if (key != null) key += p4;
+							break;
+					}
+					ws();
+					if (Position == pp) throw new FormatException("Invalid selector or key format");
+				}
+			}
+			else return base.InterpretKey(type);
+		}
+	}
+}