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using System;
using System.Linq;
using System.Linq.Expressions;
using System.Reflection;
namespace IrcStates
{
public static class Extensions
{
public static Delegate CreateDelegate(this MethodInfo methodInfo, object target)
{
if (methodInfo == null) return null;
var types = methodInfo.GetParameters().Select(p => p.ParameterType);
Func<Type[], Type> getType;
if (methodInfo.ReturnType == typeof(void))
{
getType = Expression.GetActionType;
}
else
{
getType = Expression.GetFuncType;
types = types.Concat(new[] {methodInfo.ReturnType});
}
return methodInfo.IsStatic
? Delegate.CreateDelegate(getType(types.ToArray()), methodInfo)
: Delegate.CreateDelegate(getType(types.ToArray()), target, methodInfo);
}
}
}
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