src/EasyFrameWork/Reflection/PropertyHelper.cs

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/* http://www.zkea.net/ 
 * Copyright (c) ZKEASOFT. All rights reserved. 
 * http://www.zkea.net/licenses */

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

namespace Easy.Reflection
{
    internal class PropertyHelper
    {
        private delegate TValue ByRefFunc<TDeclaringType, TValue>(ref TDeclaringType arg);

        private static readonly MethodInfo CallPropertyGetterOpenGenericMethod =
            typeof(PropertyHelper).GetTypeInfo().GetDeclaredMethod(nameof(CallPropertyGetter));

        private static readonly MethodInfo CallPropertyGetterByReferenceOpenGenericMethod =
            typeof(PropertyHelper).GetTypeInfo().GetDeclaredMethod(nameof(CallPropertyGetterByReference));

        private static readonly MethodInfo CallNullSafePropertyGetterOpenGenericMethod =
            typeof(PropertyHelper).GetTypeInfo().GetDeclaredMethod(nameof(CallNullSafePropertyGetter));

        private static readonly MethodInfo CallNullSafePropertyGetterByReferenceOpenGenericMethod =
            typeof(PropertyHelper).GetTypeInfo().GetDeclaredMethod(nameof(CallNullSafePropertyGetterByReference));

        private static readonly MethodInfo CallPropertySetterOpenGenericMethod =
            typeof(PropertyHelper).GetTypeInfo().GetDeclaredMethod(nameof(CallPropertySetter));

        private static readonly ConcurrentDictionary<Type, PropertyHelper[]> PropertiesCache =
            new ConcurrentDictionary<Type, PropertyHelper[]>();

        private static readonly ConcurrentDictionary<Type, PropertyHelper[]> VisiblePropertiesCache =
            new ConcurrentDictionary<Type, PropertyHelper[]>();

        private Action<object, object> _valueSetter;

        public PropertyHelper(PropertyInfo property)
        {
            if (property == null)
            {
                throw new ArgumentNullException(nameof(property));
            }

            Property = property;
            Name = property.Name;
            ValueGetter = MakeFastPropertyGetter(property);
        }

        public PropertyInfo Property { get; }

        public virtual string Name { get; protected set; }

        public Func<object, object> ValueGetter { get; }

        public Action<object, object> ValueSetter
        {