74 lines
1.7 KiB
C#
74 lines
1.7 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Reflection;
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using IjwFramework.Collections;
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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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Cache<Type, List<object>> innerInherit = new Cache<Type, List<object>>( _ => new 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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innerInherit[ i ].Add( val );
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foreach( var tt in t.BaseTypes() )
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innerInherit[ tt ].Add( val );
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}
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public bool Contains<T>()
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{
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return innerInherit[ typeof( T ) ].Count != 0;
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}
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public T Get<T>()
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{
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var l = innerInherit[typeof(T)];
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if (l.Count == 1)
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return (T)l[0];
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else if (l.Count == 0)
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throw new InvalidOperationException(string.Format("TypeDictionary does not contain instance of type `{0}`", typeof(T)));
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else
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throw new InvalidOperationException(string.Format("TypeDictionary contains multiple instance of type `{0}`", typeof(T)));
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}
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public T GetOrDefault<T>()
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{
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var l = innerInherit[ typeof( T ) ];
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if( l.Count == 1 )
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return (T)l[ 0 ];
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else if( l.Count == 0 )
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return default( T );
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else
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throw new InvalidOperationException( string.Format( "TypeDictionary contains multiple instance of type `{0}`", typeof( T ) ) );
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}
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public IEnumerable<T> WithInterface<T>()
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{
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foreach( var i in innerInherit[ typeof( T ) ] )
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yield return (T)i;
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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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