using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Reflection;
using System.Diagnostics;

namespace Sheng.Winform.Controls.Kernal
{
    /// <summary>
    /// 
    /// </summary>
    public class FieldAccessorPool : FastReflectionPool<string,IFieldAccessor>
    {
        /// <summary>
        /// 
        /// </summary>
        /// <param name="type"></param>
        /// <param name="key"></param>
        /// <returns></returns>
        protected override IFieldAccessor Create(Type type, string key)
        {
            if (type == null || String.IsNullOrEmpty(key))
            {
                Debug.Assert(false, "type 或 key 为空");
                throw new ArgumentNullException();
            }

            FieldInfo fieldInfo = type.GetField(key);

            if (fieldInfo == null)
            {
                Debug.Assert(false, "没有指定的FieldInfo:" + key);
                throw new MissingFieldException(key);
            }

            return new FieldAccessor(fieldInfo);
        }
    }
}