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Monarchy Refactored
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using System; | |
using System.Collections.Generic; | |
using System.Linq; | |
using System.Reflection; | |
namespace Monarchy | |
{ | |
public class ObjectFactory { | |
static readonly IDictionary<Type, Func<object>> Container = new Dictionary<Type, Func<object>>(); | |
static readonly MethodInfo CreateObjectMethodInfo = typeof (ObjectFactory).GetMethod("Get"); | |
public T Get<T>() { | |
Type t = typeof (T); | |
if (Container.ContainsKey(t)) return (T) Container[t](); | |
ConstructorInfo[] ctors = t.GetConstructors(); | |
ConstructorInfo largestCtor = ctors.OrderBy(c => c.GetParameters().Length).First(); | |
var args = new object[largestCtor.GetParameters().Length]; | |
Array.ForEach(largestCtor.GetParameters(), p => | |
{ | |
MethodInfo mi = CreateObjectMethodInfo.MakeGenericMethod(new[] {p.ParameterType}); | |
args[p.Position] = mi.Invoke(this, null); | |
}); | |
return (T) Activator.CreateInstance(t, args); | |
} | |
public void Register<T>(Func<T> factory) where T : class { | |
Container[typeof (T)] = factory; | |
} | |
public void Register<T,TResolved>() { | |
Container[typeof (T)] = () => Get<TResolved>(); | |
} | |
} | |
} |
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