check voice actor references

OpenRA.Mods.Common/Lint/CheckVoiceReferences.cs

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+#region Copyright & License Information
+/*
+ * Copyright 2007-2015 The OpenRA Developers (see AUTHORS)
+ * This file is part of OpenRA, which is free software. It is made
+ * available to you under the terms of the GNU General Public License
+ * as published by the Free Software Foundation. For more information,
+ * see COPYING.
+ */
+#endregion
+
+using System;
+using System.Linq;
+using System.Reflection;
+using OpenRA.Traits;
+
+namespace OpenRA.Mods.Common.Lint
+{
+	public class CheckVoiceReferences : ILintPass
+	{
+		public void Run(Action<string> emitError, Action<string> emitWarning, Map map)
+		{
+			foreach (var actorInfo in map.Rules.Actors)
+			{
+				foreach (var traitInfo in actorInfo.Value.Traits.WithInterface<ITraitInfo>())
+				{
+					var fields = traitInfo.GetType().GetFields().Where(f => f.HasAttribute<VoiceSetReferenceAttribute>());
+					foreach (var field in fields)
+					{
+						var voiceSets = LintExts.GetFieldValues(traitInfo, field, emitError);
+						foreach (var voiceSet in voiceSets)
+						{
+							if (string.IsNullOrEmpty(voiceSet))
+								continue;
+
+							CheckVoices(actorInfo.Value, emitError, map, voiceSet);
+						}
+					}
+				}
+			}
+		}
+
+		void CheckVoices(ActorInfo actorInfo, Action<string> emitError, Map map, string voiceSet)
+		{
+			var soundInfo = map.Rules.Voices[voiceSet.ToLowerInvariant()];
+
+			foreach (var traitInfo in actorInfo.Traits.WithInterface<ITraitInfo>())
+			{
+				var fields = traitInfo.GetType().GetFields().Where(f => f.HasAttribute<VoiceReferenceAttribute>());
+				foreach (var field in fields)
+				{
+					var voices = LintExts.GetFieldValues(traitInfo, field, emitError);
+					foreach (var voice in voices)
+					{
+						if (string.IsNullOrEmpty(voice))
+							continue;
+
+						if (!soundInfo.Voices.Keys.Contains(voice))
+							emitError("Actor {0} using voice set {1} does not define {2} voice required by {3}.".F(actorInfo.Name, voiceSet, voice, traitInfo));
+					}
+				}
+			}
+		}
+	}
+}