54 lines
919 B
C#
54 lines
919 B
C#
using System.Collections.Generic;
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using System;
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public class Factory<TKey, TBase>
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{
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delegate T InstantiateMethod<T> ();
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Dictionary<TKey, InstantiateMethod<TBase>> _Products = new Dictionary<TKey, InstantiateMethod<TBase>> ();
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public void Register<T> (TKey key) where T : TBase, new()
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{
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_Products.Add (key, Constructor<T>);
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}
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public TBase Produce (TKey key)
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{
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return _Products [key] ();
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}
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static TBase Constructor<T> () where T : TBase, new()
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{
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return new T ();
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}
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}
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class BaseClass
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{
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}
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class ChildClass1 : BaseClass
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{
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}
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class ChildClass2 : BaseClass
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{
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}
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class TestClass
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{
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public static int Main ()
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{
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var factory = new Factory<byte, BaseClass> ();
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factory.Register<ChildClass1> (1);
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factory.Register<ChildClass2> (2);
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if (factory.Produce (1).GetType () != typeof (ChildClass1))
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return 1;
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if (factory.Produce (2).GetType () != typeof (ChildClass2))
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return 2;
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return 0;
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}
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} |