112 lines
2.6 KiB
C#
112 lines
2.6 KiB
C#
#region Copyright & License Information
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/*
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* Copyright 2007-2011 The OpenRA Developers (see AUTHORS)
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* This file is part of OpenRA, which is free software. It is made
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* available to you under the terms of the GNU General Public License
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* as published by the Free Software Foundation. For more information,
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* see COPYING.
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*/
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#endregion
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using System;
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using System.Collections;
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using System.Collections.Generic;
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using System.Linq;
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namespace OpenRA.FileFormats
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{
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public class TypeDictionary : IEnumerable
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{
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Dictionary<Type, object> dataSingular = new Dictionary<Type, object>();
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Dictionary<Type, List<object>> dataMultiple = new Dictionary<Type, List<object>>();
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public void Add( object val )
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{
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var t = val.GetType();
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foreach( var i in t.GetInterfaces() )
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InnerAdd( i, val );
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foreach( var tt in t.BaseTypes() )
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InnerAdd( tt, val );
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}
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void InnerAdd( Type t, object val )
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{
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List<object> objs;
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object obj;
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if( dataMultiple.TryGetValue( t, out objs ) )
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objs.Add( val );
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else if( dataSingular.TryGetValue( t, out obj ) )
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{
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dataSingular.Remove( t );
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dataMultiple.Add( t, new List<object> { obj, val } );
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}
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else
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dataSingular.Add( t, val );
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}
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public bool Contains<T>()
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{
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return dataSingular.ContainsKey(typeof(T)) || dataMultiple.ContainsKey(typeof(T));
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}
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public T Get<T>()
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{
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if (dataMultiple.ContainsKey(typeof(T)))
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throw new InvalidOperationException("TypeDictionary contains multiple instance of type `{0}`".F(typeof(T)));
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object ret;
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if (!dataSingular.TryGetValue(typeof(T), out ret))
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throw new InvalidOperationException("TypeDictionary does not contain instance of type `{0}`".F(typeof(T)));
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return (T)ret;
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}
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public T GetOrDefault<T>()
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{
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return (T)GetOrDefault(typeof(T));
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}
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public object GetOrDefault(Type t)
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{
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if (dataMultiple.ContainsKey(t))
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throw new InvalidOperationException("TypeDictionary contains multiple instances of type `{0}`".F(t));
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object ret;
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if (!dataSingular.TryGetValue(t, out ret))
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return null;
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return ret;
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}
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public IEnumerable<T> WithInterface<T>()
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{
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List<object> objs;
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object obj;
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if( dataMultiple.TryGetValue( typeof( T ), out objs ) )
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return objs.Cast<T>();
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else if( dataSingular.TryGetValue( typeof( T ), out obj ) )
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return new T[] { (T)obj };
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else
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return new T[ 0 ];
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}
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public IEnumerator GetEnumerator()
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{
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return WithInterface<object>().GetEnumerator();
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}
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}
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public static class TypeExts
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{
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public static IEnumerable<Type> BaseTypes( this Type t )
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{
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while( t != null )
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{
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yield return t;
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t = t.BaseType;
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}
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}
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}
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}
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