Add project files.

Assets/Cryville/Crtr/RulesetSelectors.cs

@@ -0,0 +1,93 @@
+using Cryville.Common.Pdt;
+using Cryville.Crtr.Components;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Runtime.InteropServices;
+
+namespace Cryville.Crtr {
+	public class RulesetSelectors {
+		readonly RulesetSelector[] selectors;
+		public RulesetSelectors(IEnumerable<RulesetSelector> s) {
+			selectors = s.ToArray();
+		}
+		public IEnumerable<ChartEvent> Match(ChartEvent ev) {
+			IEnumerable<ChartEvent> result = new ChartEvent[] { ev };
+			foreach (var sel in selectors) {
+				IEnumerable<ChartEvent> temp = new ChartEvent[0];
+				foreach (var e in result) {
+					var m = sel.Match(e);
+					if (m != null) temp = temp.Concat(m);
+				}
+				result = temp;
+			}
+			return result;
+		}
+		public override string ToString() {
+			if (selectors.Length == 0) return "";
+			bool flag = false;
+			string r = "";
+			foreach (var s in selectors) {
+				if (flag) r += " " + s.ToString();
+				else { r += s.ToString(); flag = true; }
+			}
+			return r;
+		}
+	}
+
+	public abstract class RulesetSelector {
+		public abstract IEnumerable<ChartEvent> Match(ChartEvent ev);
+		public class CreateItem : RulesetSelector {
+			public override string ToString() {
+				return "$";
+			}
+			public override IEnumerable<ChartEvent> Match(ChartEvent ev) {
+				if (!(ev is EventList)) throw new ArgumentException("Event is not event list");
+				var tev = (EventList)ev;
+				var result = tev.Create();
+				tev.Events.Add(result); // TODO create at
+				return new ChartEvent[] { result };
+			}
+		}
+		public class EventType : RulesetSelector {
+			readonly string _type;
+			public EventType(string type) { _type = type; }
+			public override string ToString() {
+				return _type;
+			}
+			public override IEnumerable<ChartEvent> Match(ChartEvent ev) {
+				if (!(ev is EventContainer)) throw new ArgumentException("Event is not container");
+				var tev = (EventContainer)ev;
+				return new ChartEvent[] { tev.GetEventsOfType(_type) };
+			}
+		}
+		public class Index : RulesetSelector {
+			public override string ToString() {
+				return "#";
+			}
+			public override IEnumerable<ChartEvent> Match(ChartEvent ev) {
+				if (!(ev is EventList)) throw new ArgumentException("Event is not event list");
+				var tev = (EventList)ev;
+				return tev.Events; // TODO select at
+			}
+		}
+		public class Property : RulesetSelector {
+			readonly PdtExpression _exp;
+			readonly PdtOperator _op;
+			bool _flag;
+			public Property(PdtExpression exp) {
+				_exp = exp;
+				_op = new PropOp.Boolean(v => _flag = v);
+			}
+			public override string ToString() {
+				return string.Format("> {{{0}}}", _exp);
+			}
+			public override IEnumerable<ChartEvent> Match(ChartEvent ev) {
+				ChartPlayer.etor.ContextEvent = ev;
+				ChartPlayer.etor.Evaluate(_op, _exp);
+				if (_flag) return new ChartEvent[] { ev };
+				else return null;
+			}
+		}
+	}
+}