116 lines
3.2 KiB
C#
116 lines
3.2 KiB
C#
#region Copyright & License Information
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/*
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* Copyright 2007,2009,2010 Chris Forbes, Robert Pepperell, Matthew Bowra-Dean, Paul Chote, Alli Witheford.
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* This file is part of OpenRA.
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*
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* OpenRA is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* OpenRA is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with OpenRA. If not, see <http://www.gnu.org/licenses/>.
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*/
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#endregion
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using System;
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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
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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( string.Format( "TypeDictionary contains multiple instance of type `{0}`", 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(string.Format("TypeDictionary does not contain instance of type `{0}`", 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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if( dataMultiple.ContainsKey( typeof( T ) ) )
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throw new InvalidOperationException( string.Format( "TypeDictionary contains multiple instance of type `{0}`", typeof( T ) ) );
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object ret;
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if( !dataSingular.TryGetValue( typeof( T ), out ret ) )
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return default( T );
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return (T)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<object> 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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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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