TensorFlow.NET/test/TensorFlowNET.UnitTest/Utilities/PrivateObject.cs

// Copyright (c) Microsoft Corporation. All rights reserved.
// Licensed under the MIT license. See LICENSE file in the project root for full license information.

namespace Microsoft.VisualStudio.TestTools.UnitTesting
{
    using System;
    using System.Collections.Generic;
    //using System.Diagnostics;
    //using System.Diagnostics.CodeAnalysis;
    using System.Globalization;
    using System.Reflection;

    /// <summary>
    /// This class represents the live NON public INTERNAL object in the system
    /// </summary>
    internal class PrivateObject
    {
        #region Data

        // bind everything
        private const BindingFlags BindToEveryThing = BindingFlags.Default | BindingFlags.NonPublic | BindingFlags.Instance | BindingFlags.Public;

#pragma warning disable CS0414 // The field 'PrivateObject.constructorFlags' is assigned but its value is never used
        private static BindingFlags constructorFlags = BindingFlags.Instance | BindingFlags.Public | BindingFlags.CreateInstance | BindingFlags.NonPublic;
#pragma warning restore CS0414 // The field 'PrivateObject.constructorFlags' is assigned but its value is never used

        private object target; // automatically initialized to null
        private Type originalType; // automatically initialized to null

        //private Dictionary<string, LinkedList<MethodInfo>> methodCache; // automatically initialized to null

        #endregion

        #region Constructors

        ///// <summary>
        ///// Initializes a new instance of the <see cref="PrivateObject"/> class that contains
        ///// the already existing object of the private class
        ///// </summary>
        ///// <param name="obj"> object that serves as starting point to reach the private members</param>
        ///// <param name="memberToAccess">the derefrencing string using . that points to the object to be retrived as in m_X.m_Y.m_Z</param>
        //[SuppressMessage("Microsoft.Naming", "CA1720:IdentifiersShouldNotContainTypeNames", MessageId = "obj", Justification = "We don't know anything about the object other than that it's an object, so 'obj' seems reasonable")]
        //public PrivateObject(object obj, string memberToAccess)
        //{
        //    Helper.CheckParameterNotNull(obj, "obj", string.Empty);
        //    ValidateAccessString(memberToAccess);

        //    PrivateObject temp = obj as PrivateObject;
        //    if (temp == null)
        //    {
        //        temp = new PrivateObject(obj);
        //    }

        //    // Split The access string
        //    string[] arr = memberToAccess.Split(new char[] { '.' });

        //    for (int i = 0; i < arr.Length; i++)
        //    {
        //        object next = temp.InvokeHelper(arr[i], BindToEveryThing | BindingFlags.Instance | BindingFlags.GetField | BindingFlags.GetProperty, null, CultureInfo.InvariantCulture);
        //        temp = new PrivateObject(next);
        //    }

        //    this.target = temp.target;
        //    this.originalType = temp.originalType;
        //}

        ///// <summary>
        ///// Initializes a new instance of the <see cref="PrivateObject"/> class that wraps the
        ///// specified type.
        ///// </summary>
        ///// <param name="assemblyName">Name of the assembly</param>
        ///// <param name="typeName">fully qualified name</param>
        ///// <param name="args">Argmenets to pass to the constructor</param>
        //public PrivateObject(string assemblyName, string typeName, params object[] args)
        //    : this(assemblyName, typeName, null, args)
        //{
        //}

        ///// <summary>
        ///// Initializes a new instance of the <see cref="PrivateObject"/> class that wraps the
        ///// specified type.
        ///// </summary>
        ///// <param name="assemblyName">Name of the assembly</param>
        ///// <param name="typeName">fully qualified name</param>
        ///// <param name="parameterTypes">An array of <see cref="T:System.Type"/> objects representing the number, order, and type of the parameters for the constructor to get</param>
        ///// <param name="args">Argmenets to pass to the constructor</param>
        //public PrivateObject(string assemblyName, string typeName, Type[] parameterTypes, object[] args)
        //    : this(Type.GetType(string.Format(CultureInfo.InvariantCulture, "{0}, {1}", typeName, assemblyName), false), parameterTypes, args)
        //{
        //    Helper.CheckParameterNotNull(assemblyName, "assemblyName", string.Empty);
        //    Helper.CheckParameterNotNull(typeName, "typeName", string.Empty);
        //}

        ///// <summary>
        ///// Initializes a new instance of the <see cref="PrivateObject"/> class that wraps the
        ///// specified type.
        ///// </summary>
        ///// <param name="type">type of the object to create</param>
        ///// <param name="args">Argmenets to pass to the constructor</param>
        //public PrivateObject(Type type, params object[] args)
        //    : this(type, null, args)
        //{
        //    Helper.CheckParameterNotNull(type, "type", string.Empty);
        //}

        ///// <summary>
        ///// Initializes a new instance of the <see cref="PrivateObject"/> class that wraps the
        ///// specified type.
        ///// </summary>
        ///// <param name="type">type of the object to create</param>
        ///// <param name="parameterTypes">An array of <see cref="T:System.Type"/> objects representing the number, order, and type of the parameters for the constructor to get</param>
        ///// <param name="args">Argmenets to pass to the constructor</param>
        //public PrivateObject(Type type, Type[] parameterTypes, object[] args)
        //{
        //    Helper.CheckParameterNotNull(type, "type", string.Empty);
        //    object o;
        //    if (parameterTypes != null)
        //    {
        //        ConstructorInfo ci = type.GetConstructor(BindToEveryThing, null, parameterTypes, null);
        //        if (ci == null)
        //        {
        //            throw new ArgumentException(FrameworkMessages.PrivateAccessorConstructorNotFound);
        //        }

        //        try
        //        {
        //            o = ci.Invoke(args);
        //        }
        //        catch (TargetInvocationException e)
        //        {
        //            Debug.Assert(e.InnerException != null, "Inner exception should not be null.");
        //            if (e.InnerException != null)
        //            {
        //                throw e.InnerException;
        //            }

        //            throw;
        //        }
        //    }
        //    else
        //    {
        //        o = Activator.CreateInstance(type, constructorFlags, null, args, null);
        //    }

        //    this.ConstructFrom(o);
        //}

        /// <summary>
        /// Initializes a new instance of the <see cref="PrivateObject"/> class that wraps
        /// the given object.
        /// </summary>
        /// <param name="obj">object to wrap</param>
        //[SuppressMessage("Microsoft.Naming", "CA1720:IdentifiersShouldNotContainTypeNames", MessageId = "obj", Justification = "We don't know anything about the object other than that it's an object, so 'obj' seems reasonable")]
        public PrivateObject(object obj)
        {
            Helper.CheckParameterNotNull(obj, "obj", string.Empty);
            this.ConstructFrom(obj);
        }

        /// <summary>
        /// Initializes a new instance of the <see cref="PrivateObject"/> class that wraps
        /// the given object.
        /// </summary>
        /// <param name="obj">object to wrap</param>
        /// <param name="type">PrivateType object</param>
        //[SuppressMessage("Microsoft.Naming", "CA1720:IdentifiersShouldNotContainTypeNames", MessageId = "obj", Justification = "We don't know anything about the object other than that it's an an object, so 'obj' seems reasonable")]
        public PrivateObject(object obj, PrivateType type)
        {
            Helper.CheckParameterNotNull(type, "type", string.Empty);
            this.target = obj;
            this.originalType = type.ReferencedType;
        }

        #endregion

        ///// <summary>
        ///// Gets or sets the target
        ///// </summary>
        //public object Target
        //{
        //    get
        //    {
        //        return this.target;
        //    }

        //    set
        //    {
        //        Helper.CheckParameterNotNull(value, "Target", string.Empty);
        //        this.target = value;
        //        this.originalType = value.GetType();
        //    }
        //}

        ///// <summary>
        ///// Gets the type of underlying object
        ///// </summary>
        //public Type RealType
        //{
        //    get
        //    {
        //        return this.originalType;
        //    }
        //}

        //private Dictionary<string, LinkedList<MethodInfo>> GenericMethodCache
        //{
        //    get
        //    {
        //        if (this.methodCache == null)
        //        {
        //            this.BuildGenericMethodCacheForType(this.originalType);
        //        }

        //        Debug.Assert(this.methodCache != null, "Invalid method cache for type.");

        //        return this.methodCache;
        //    }
        //}

        /// <summary>
        /// returns the hash code of the target object
        /// </summary>
        /// <returns>int representing hashcode of the target object</returns>
        public override int GetHashCode()
        {
            //Debug.Assert(this.target != null, "target should not be null.");
            return this.target.GetHashCode();
        }

        /// <summary>
        /// Equals
        /// </summary>
        /// <param name="obj">Object with whom to compare</param>
        /// <returns>returns true if the objects are equal.</returns>
        public override bool Equals(object obj)
        {
            if (this != obj)
            {
                //Debug.Assert(this.target != null, "target should not be null.");
                if (typeof(PrivateObject) == obj?.GetType())
                {
                    return this.target.Equals(((PrivateObject) obj).target);
                } else
                {
                    return false;
                }
            }

            return true;
        }

        ///// <summary>
        ///// Invokes the specified method
        ///// </summary>
        ///// <param name="name">Name of the method</param>
        ///// <param name="args">Arguments to pass to the member to invoke.</param>
        ///// <returns>Result of method call</returns>
        //public object Invoke(string name, params object[] args)
        //{
        //    Helper.CheckParameterNotNull(name, "name", string.Empty);
        //    return this.Invoke(name, null, args, CultureInfo.InvariantCulture);
        //}

        ///// <summary>
        ///// Invokes the specified method
        ///// </summary>
        ///// <param name="name">Name of the method</param>
        ///// <param name="parameterTypes">An array of <see cref="T:System.Type"/> objects representing the number, order, and type of the parameters for the method to get.</param>
        ///// <param name="args">Arguments to pass to the member to invoke.</param>
        ///// <returns>Result of method call</returns>
        //public object Invoke(string name, Type[] parameterTypes, object[] args)
        //{
        //    return this.Invoke(name, parameterTypes, args, CultureInfo.InvariantCulture);
        //}

        ///// <summary>
        ///// Invokes the specified method
        ///// </summary>
        ///// <param name="name">Name of the method</param>
        ///// <param name="parameterTypes">An array of <see cref="T:System.Type"/> objects representing the number, order, and type of the parameters for the method to get.</param>
        ///// <param name="args">Arguments to pass to the member to invoke.</param>
        ///// <param name="typeArguments">An array of types corresponding to the types of the generic arguments.</param>
        ///// <returns>Result of method call</returns>
        //public object Invoke(string name, Type[] parameterTypes, object[] args, Type[] typeArguments)
        //{
        //    return this.Invoke(name, BindToEveryThing, parameterTypes, args, CultureInfo.InvariantCulture, typeArguments);
        //}

        ///// <summary>
        ///// Invokes the specified method
        ///// </summary>
        ///// <param name="name">Name of the method</param>
        ///// <param name="args">Arguments to pass to the member to invoke.</param>
        ///// <param name="culture">Culture info</param>
        ///// <returns>Result of method call</returns>
        //public object Invoke(string name, object[] args, CultureInfo culture)
        //{
        //    return this.Invoke(name, null, args, culture);
        //}

        ///// <summary>
        ///// Invokes the specified method
        ///// </summary>
        ///// <param name="name">Name of the method</param>
        ///// <param name="parameterTypes">An array of <see cref="T:System.Type"/> objects representing the number, order, and type of the parameters for the method to get.</param>
        ///// <param name="args">Arguments to pass to the member to invoke.</param>
        ///// <param name="culture">Culture info</param>
        ///// <returns>Result of method call</returns>
        //public object Invoke(string name, Type[] parameterTypes, object[] args, CultureInfo culture)
        //{
        //    return this.Invoke(name, BindToEveryThing, parameterTypes, args, culture);
        //}

        ///// <summary>
        ///// Invokes the specified method
        ///// </summary>
        ///// <param name="name">Name of the method</param>
        ///// <param name="bindingFlags">A bitmask comprised of one or more <see cref="T:System.Reflection.BindingFlags"/> that specify how the search is conducted.</param>
        ///// <param name="args">Arguments to pass to the member to invoke.</param>
        ///// <returns>Result of method call</returns>
        //public object Invoke(string name, BindingFlags bindingFlags, params object[] args)
        //{
        //    return this.Invoke(name, bindingFlags, null, args, CultureInfo.InvariantCulture);
        //}

        ///// <summary>
        ///// Invokes the specified method
        ///// </summary>
        ///// <param name="name">Name of the method</param>
        ///// <param name="bindingFlags">A bitmask comprised of one or more <see cref="T:System.Reflection.BindingFlags"/> that specify how the search is conducted.</param>
        ///// <param name="parameterTypes">An array of <see cref="T:System.Type"/> objects representing the number, order, and type of the parameters for the method to get.</param>
        ///// <param name="args">Arguments to pass to the member to invoke.</param>
        ///// <returns>Result of method call</returns>
        //public object Invoke(string name, BindingFlags bindingFlags, Type[] parameterTypes, object[] args)
        //{
        //    return this.Invoke(name, bindingFlags, parameterTypes, args, CultureInfo.InvariantCulture);
        //}

        ///// <summary>
        ///// Invokes the specified method
        ///// </summary>
        ///// <param name="name">Name of the method</param>
        ///// <param name="bindingFlags">A bitmask comprised of one or more <see cref="T:System.Reflection.BindingFlags"/> that specify how the search is conducted.</param>
        ///// <param name="args">Arguments to pass to the member to invoke.</param>
        ///// <param name="culture">Culture info</param>
        ///// <returns>Result of method call</returns>
        //public object Invoke(string name, BindingFlags bindingFlags, object[] args, CultureInfo culture)
        //{
        //    return this.Invoke(name, bindingFlags, null, args, culture);
        //}

        ///// <summary>
        ///// Invokes the specified method
        ///// </summary>
        ///// <param name="name">Name of the method</param>
        ///// <param name="bindingFlags">A bitmask comprised of one or more <see cref="T:System.Reflection.BindingFlags"/> that specify how the search is conducted.</param>
        ///// <param name="parameterTypes">An array of <see cref="T:System.Type"/> objects representing the number, order, and type of the parameters for the method to get.</param>
        ///// <param name="args">Arguments to pass to the member to invoke.</param>
        ///// <param name="culture">Culture info</param>
        ///// <returns>Result of method call</returns>
        //public object Invoke(string name, BindingFlags bindingFlags, Type[] parameterTypes, object[] args, CultureInfo culture)
        //{
        //    return this.Invoke(name, bindingFlags, parameterTypes, args, culture, null);
        //}

        ///// <summary>
        ///// Invokes the specified method
        ///// </summary>
        ///// <param name="name">Name of the method</param>
        ///// <param name="bindingFlags">A bitmask comprised of one or more <see cref="T:System.Reflection.BindingFlags"/> that specify how the search is conducted.</param>
        ///// <param name="parameterTypes">An array of <see cref="T:System.Type"/> objects representing the number, order, and type of the parameters for the method to get.</param>
        ///// <param name="args">Arguments to pass to the member to invoke.</param>
        ///// <param name="culture">Culture info</param>
        ///// <param name="typeArguments">An array of types corresponding to the types of the generic arguments.</param>
        ///// <returns>Result of method call</returns>
        //public object Invoke(string name, BindingFlags bindingFlags, Type[] parameterTypes, object[] args, CultureInfo culture, Type[] typeArguments)
        //{
        //    Helper.CheckParameterNotNull(name, "name", string.Empty);
        //    if (parameterTypes != null)
        //    {
        //        bindingFlags |= BindToEveryThing | BindingFlags.Instance;

        //        // Fix up the parameter types
        //        MethodInfo member = this.originalType.GetMethod(name, bindingFlags, null, parameterTypes, null);

        //        // If the method was not found and type arguments were provided for generic paramaters,
        //        // attempt to look up a generic method.
        //        if ((member == null) && (typeArguments != null))
        //        {
        //            // This method may contain generic parameters...if so, the previous call to
        //            // GetMethod() will fail because it doesn't fully support generic parameters.

        //            // Look in the method cache to see if there is a generic method
        //            // on the incoming type that contains the correct signature.
        //            member = this.GetGenericMethodFromCache(name, parameterTypes, typeArguments, bindingFlags, null);
        //        }

        //        if (member == null)
        //        {
        //            throw new ArgumentException(
        //                string.Format(CultureInfo.CurrentCulture, FrameworkMessages.PrivateAccessorMemberNotFound, name));
        //        }

        //        try
        //        {
        //            if (member.IsGenericMethodDefinition)
        //            {
        //                MethodInfo constructed = member.MakeGenericMethod(typeArguments);
        //                return constructed.Invoke(this.target, bindingFlags, null, args, culture);
        //            }
        //            else
        //            {
        //                return member.Invoke(this.target, bindingFlags, null, args, culture);
        //            }
        //        }
        //        catch (TargetInvocationException e)
        //        {
        //            Debug.Assert(e.InnerException != null, "Inner exception should not be null.");
        //            if (e.InnerException != null)
        //            {
        //                throw e.InnerException;
        //            }

        //            throw;
        //        }
        //    }
        //    else
        //    {
        //        return this.InvokeHelper(name, bindingFlags | BindingFlags.InvokeMethod, args, culture);
        //    }
        //}

        ///// <summary>
        ///// Gets the array element using array of subsrcipts for each dimension
        ///// </summary>
        ///// <param name="name">Name of the member</param>
        ///// <param name="indices">the indices of array</param>
        ///// <returns>An arrya of elements.</returns>
        //public object GetArrayElement(string name, params int[] indices)
        //{
        //    Helper.CheckParameterNotNull(name, "name", string.Empty);
        //    return this.GetArrayElement(name, BindToEveryThing, indices);
        //}

        ///// <summary>
        ///// Sets the array element using array of subsrcipts for each dimension
        ///// </summary>
        ///// <param name="name">Name of the member</param>
        ///// <param name="value">Value to set</param>
        ///// <param name="indices">the indices of array</param>
        //public void SetArrayElement(string name, object value, params int[] indices)
        //{
        //    Helper.CheckParameterNotNull(name, "name", string.Empty);
        //    this.SetArrayElement(name, BindToEveryThing, value, indices);
        //}

        ///// <summary>
        ///// Gets the array element using array of subsrcipts for each dimension
        ///// </summary>
        ///// <param name="name">Name of the member</param>
        ///// <param name="bindingFlags">A bitmask comprised of one or more <see cref="T:System.Reflection.BindingFlags"/> that specify how the search is conducted.</param>
        ///// <param name="indices">the indices of array</param>
        ///// <returns>An arrya of elements.</returns>
        //public object GetArrayElement(string name, BindingFlags bindingFlags, params int[] indices)
        //{
        //    Helper.CheckParameterNotNull(name, "name", string.Empty);
        //    Array arr = (Array)this.InvokeHelper(name, BindingFlags.GetField | bindingFlags, null, CultureInfo.InvariantCulture);
        //    return arr.GetValue(indices);
        //}

        ///// <summary>
        ///// Sets the array element using array of subsrcipts for each dimension
        ///// </summary>
        ///// <param name="name">Name of the member</param>
        ///// <param name="bindingFlags">A bitmask comprised of one or more <see cref="T:System.Reflection.BindingFlags"/> that specify how the search is conducted.</param>
        ///// <param name="value">Value to set</param>
        ///// <param name="indices">the indices of array</param>
        //public void SetArrayElement(string name, BindingFlags bindingFlags, object value, params int[] indices)
        //{
        //    Helper.CheckParameterNotNull(name, "name", string.Empty);
        //    Array arr = (Array)this.InvokeHelper(name, BindingFlags.GetField | bindingFlags, null, CultureInfo.InvariantCulture);
        //    arr.SetValue(value, indices);
        //}

        ///// <summary>
        ///// Get the field
        ///// </summary>
        ///// <param name="name">Name of the field</param>
        ///// <returns>The field.</returns>
        //public object GetField(string name)
        //{
        //    Helper.CheckParameterNotNull(name, "name", string.Empty);
        //    return this.GetField(name, BindToEveryThing);
        //}

        ///// <summary>
        ///// Sets the field
        ///// </summary>
        ///// <param name="name">Name of the field</param>
        ///// <param name="value">value to set</param>
        //public void SetField(string name, object value)
        //{
        //    Helper.CheckParameterNotNull(name, "name", string.Empty);
        //    this.SetField(name, BindToEveryThing, value);
        //}

        ///// <summary>
        ///// Gets the field
        ///// </summary>
        ///// <param name="name">Name of the field</param>
        ///// <param name="bindingFlags">A bitmask comprised of one or more <see cref="T:System.Reflection.BindingFlags"/> that specify how the search is conducted.</param>
        ///// <returns>The field.</returns>
        //public object GetField(string name, BindingFlags bindingFlags)
        //{
        //    Helper.CheckParameterNotNull(name, "name", string.Empty);
        //    return this.InvokeHelper(name, BindingFlags.GetField | bindingFlags, null, CultureInfo.InvariantCulture);
        //}

        ///// <summary>
        ///// Sets the field
        ///// </summary>
        ///// <param name="name">Name of the field</param>
        ///// <param name="bindingFlags">A bitmask comprised of one or more <see cref="T:System.Reflection.BindingFlags"/> that specify how the search is conducted.</param>
        ///// <param name="value">value to set</param>
        //public void SetField(string name, BindingFlags bindingFlags, object value)
        //{
        //    Helper.CheckParameterNotNull(name, "name", string.Empty);
        //    this.InvokeHelper(name, BindingFlags.SetField | bindingFlags, new object[] { value }, CultureInfo.InvariantCulture);
        //}

        /// <summary>
        /// Get the field or property
        /// </summary>
        /// <param name="name">Name of the field or property</param>
        /// <returns>The field or property.</returns>
        public object GetFieldOrProperty(string name)
        {
            Helper.CheckParameterNotNull(name, "name", string.Empty);
            return this.GetFieldOrProperty(name, BindToEveryThing);
        }

        /// <summary>
        /// Sets the field or property
        /// </summary>
        /// <param name="name">Name of the field or property</param>
        /// <param name="value">value to set</param>
        public void SetFieldOrProperty(string name, object value)
        {
            Helper.CheckParameterNotNull(name, "name", string.Empty);
            this.SetFieldOrProperty(name, BindToEveryThing, value);
        }

        /// <summary>
        /// Gets the field or property
        /// </summary>
        /// <param name="name">Name of the field or property</param>
        /// <param name="bindingFlags">A bitmask comprised of one or more <see cref="T:System.Reflection.BindingFlags"/> that specify how the search is conducted.</param>
        /// <returns>The field or property.</returns>
        public object GetFieldOrProperty(string name, BindingFlags bindingFlags)
        {
            Helper.CheckParameterNotNull(name, "name", string.Empty);
            return this.InvokeHelper(name, BindingFlags.GetField | BindingFlags.GetProperty | bindingFlags, null, CultureInfo.InvariantCulture);
        }

        /// <summary>
        /// Sets the field or property
        /// </summary>
        /// <param name="name">Name of the field or property</param>
        /// <param name="bindingFlags">A bitmask comprised of one or more <see cref="T:System.Reflection.BindingFlags"/> that specify how the search is conducted.</param>
        /// <param name="value">value to set</param>
        public void SetFieldOrProperty(string name, BindingFlags bindingFlags, object value)
        {
            Helper.CheckParameterNotNull(name, "name", string.Empty);
            this.InvokeHelper(name, BindingFlags.SetField | BindingFlags.SetProperty | bindingFlags, new object[] {value}, CultureInfo.InvariantCulture);
        }

        ///// <summary>
        ///// Gets the property
        ///// </summary>
        ///// <param name="name">Name of the property</param>
        ///// <param name="args">Arguments to pass to the member to invoke.</param>
        ///// <returns>The property.</returns>
        //public object GetProperty(string name, params object[] args)
        //{
        //    return this.GetProperty(name, null, args);
        //}

        ///// <summary>
        ///// Gets the property
        ///// </summary>
        ///// <param name="name">Name of the property</param>
        ///// <param name="parameterTypes">An array of <see cref="T:System.Type"/> objects representing the number, order, and type of the parameters for the indexed property.</param>
        ///// <param name="args">Arguments to pass to the member to invoke.</param>
        ///// <returns>The property.</returns>
        //public object GetProperty(string name, Type[] parameterTypes, object[] args)
        //{
        //    return this.GetProperty(name, BindToEveryThing, parameterTypes, args);
        //}

        ///// <summary>
        ///// Set the property
        ///// </summary>
        ///// <param name="name">Name of the property</param>
        ///// <param name="value">value to set</param>
        ///// <param name="args">Arguments to pass to the member to invoke.</param>
        //public void SetProperty(string name, object value, params object[] args)
        //{
        //    this.SetProperty(name, null, value, args);
        //}

        ///// <summary>
        ///// Set the property
        ///// </summary>
        ///// <param name="name">Name of the property</param>
        ///// <param name="parameterTypes">An array of <see cref="T:System.Type"/> objects representing the number, order, and type of the parameters for the indexed property.</param>
        ///// <param name="value">value to set</param>
        ///// <param name="args">Arguments to pass to the member to invoke.</param>
        //public void SetProperty(string name, Type[] parameterTypes, object value, object[] args)
        //{
        //    this.SetProperty(name, BindToEveryThing, value, parameterTypes, args);
        //}

        ///// <summary>
        ///// Gets the property
        ///// </summary>
        ///// <param name="name">Name of the property</param>
        ///// <param name="bindingFlags">A bitmask comprised of one or more <see cref="T:System.Reflection.BindingFlags"/> that specify how the search is conducted.</param>
        ///// <param name="args">Arguments to pass to the member to invoke.</param>
        ///// <returns>The property.</returns>
        //public object GetProperty(string name, BindingFlags bindingFlags, params object[] args)
        //{
        //    return this.GetProperty(name, bindingFlags, null, args);
        //}

        ///// <summary>
        ///// Gets the property
        ///// </summary>
        ///// <param name="name">Name of the property</param>
        ///// <param name="bindingFlags">A bitmask comprised of one or more <see cref="T:System.Reflection.BindingFlags"/> that specify how the search is conducted.</param>
        ///// <param name="parameterTypes">An array of <see cref="T:System.Type"/> objects representing the number, order, and type of the parameters for the indexed property.</param>
        ///// <param name="args">Arguments to pass to the member to invoke.</param>
        ///// <returns>The property.</returns>
        //public object GetProperty(string name, BindingFlags bindingFlags, Type[] parameterTypes, object[] args)
        //{
        //    Helper.CheckParameterNotNull(name, "name", string.Empty);
        //    if (parameterTypes != null)
        //    {
        //        PropertyInfo pi = this.originalType.GetProperty(name, bindingFlags, null, null, parameterTypes, null);
        //        if (pi == null)
        //        {
        //            throw new ArgumentException(
        //                string.Format(CultureInfo.CurrentCulture, FrameworkMessages.PrivateAccessorMemberNotFound, name));
        //        }

        //        return pi.GetValue(this.target, args);
        //    }
        //    else
        //    {
        //        return this.InvokeHelper(name, bindingFlags | BindingFlags.GetProperty, args, null);
        //    }
        //}

        ///// <summary>
        ///// Sets the property
        ///// </summary>
        ///// <param name="name">Name of the property</param>
        ///// <param name="bindingFlags">A bitmask comprised of one or more <see cref="T:System.Reflection.BindingFlags"/> that specify how the search is conducted.</param>
        ///// <param name="value">value to set</param>
        ///// <param name="args">Arguments to pass to the member to invoke.</param>
        //public void SetProperty(string name, BindingFlags bindingFlags, object value, params object[] args)
        //{
        //    this.SetProperty(name, bindingFlags, value, null, args);
        //}

        ///// <summary>
        ///// Sets the property
        ///// </summary>
        ///// <param name="name">Name of the property</param>
        ///// <param name="bindingFlags">A bitmask comprised of one or more <see cref="T:System.Reflection.BindingFlags"/> that specify how the search is conducted.</param>
        ///// <param name="value">value to set</param>
        ///// <param name="parameterTypes">An array of <see cref="T:System.Type"/> objects representing the number, order, and type of the parameters for the indexed property.</param>
        ///// <param name="args">Arguments to pass to the member to invoke.</param>
        //public void SetProperty(string name, BindingFlags bindingFlags, object value, Type[] parameterTypes, object[] args)
        //{
        //    Helper.CheckParameterNotNull(name, "name", string.Empty);

        //    if (parameterTypes != null)
        //    {
        //        PropertyInfo pi = this.originalType.GetProperty(name, bindingFlags, null, null, parameterTypes, null);
        //        if (pi == null)
        //        {
        //            throw new ArgumentException(
        //                string.Format(CultureInfo.CurrentCulture, FrameworkMessages.PrivateAccessorMemberNotFound, name));
        //        }

        //        pi.SetValue(this.target, value, args);
        //    }
        //    else
        //    {
        //        object[] pass = new object[(args?.Length ?? 0) + 1];
        //        pass[0] = value;
        //        args?.CopyTo(pass, 1);
        //        this.InvokeHelper(name, bindingFlags | BindingFlags.SetProperty, pass, null);
        //    }
        //}

        #region Private Helpers

        ///// <summary>
        ///// Validate access string
        ///// </summary>
        ///// <param name="access"> access string</param>
        //private static void ValidateAccessString(string access)
        //{
        //    Helper.CheckParameterNotNull(access, "access", string.Empty);
        //    if (access.Length == 0)
        //    {
        //        throw new ArgumentException(FrameworkMessages.AccessStringInvalidSyntax);
        //    }

        //    string[] arr = access.Split('.');
        //    foreach (string str in arr)
        //    {
        //        if ((str.Length == 0) || (str.IndexOfAny(new char[] { ' ', '\t', '\n' }) != -1))
        //        {
        //            throw new ArgumentException(FrameworkMessages.AccessStringInvalidSyntax);
        //        }
        //    }
        //}

        /// <summary>
        /// Invokes the memeber
        /// </summary>
        /// <param name="name">Name of the member</param>
        /// <param name="bindingFlags">Additional attributes</param>
        /// <param name="args">Arguments for the invocation</param>
        /// <param name="culture">Culture</param>
        /// <returns>Result of the invocation</returns>
        private object InvokeHelper(string name, BindingFlags bindingFlags, object[] args, CultureInfo culture)
        {
            Helper.CheckParameterNotNull(name, "name", string.Empty);
            //Debug.Assert(this.target != null, "Internal Error: Null reference is returned for internal object");

            // Invoke the actual Method
            try
            {
                return this.originalType.InvokeMember(name, bindingFlags, null, this.target, args, culture);
            } catch (TargetInvocationException e)
            {
                //Debug.Assert(e.InnerException != null, "Inner exception should not be null.");
                if (e.InnerException != null)
                {
                    throw e.InnerException;
                }

                throw;
            }
        }

        private void ConstructFrom(object obj)
        {
            Helper.CheckParameterNotNull(obj, "obj", string.Empty);
            this.target = obj;
            this.originalType = obj.GetType();
        }

        //private void BuildGenericMethodCacheForType(Type t)
        //{
        //    Debug.Assert(t != null, "type should not be null.");
        //    this.methodCache = new Dictionary<string, LinkedList<MethodInfo>>();

        //    MethodInfo[] members = t.GetMethods(BindToEveryThing);
        //    LinkedList<MethodInfo> listByName; // automatically initialized to null

        //    foreach (MethodInfo member in members)
        //    {
        //        if (member.IsGenericMethod || member.IsGenericMethodDefinition)
        //        {
        //            if (!this.GenericMethodCache.TryGetValue(member.Name, out listByName))
        //            {
        //                listByName = new LinkedList<MethodInfo>();
        //                this.GenericMethodCache.Add(member.Name, listByName);
        //            }

        //            Debug.Assert(listByName != null, "list should not be null.");
        //            listByName.AddLast(member);
        //        }
        //    }
        //}

        ///// <summary>
        ///// Extracts the most appropriate generic method signature from the current private type.
        ///// </summary>
        ///// <param name="methodName">The name of the method in which to search the signature cache.</param>
        ///// <param name="parameterTypes">An array of types corresponding to the types of the parameters in which to search.</param>
        ///// <param name="typeArguments">An array of types corresponding to the types of the generic arguments.</param>
        ///// <param name="bindingFlags"><see cref="BindingFlags"/> to further filter the method signatures.</param>
        ///// <param name="modifiers">Modifiers for parameters.</param>
        ///// <returns>A methodinfo instance.</returns>
        //private MethodInfo GetGenericMethodFromCache(string methodName, Type[] parameterTypes, Type[] typeArguments, BindingFlags bindingFlags, ParameterModifier[] modifiers)
        //{
        //    Debug.Assert(!string.IsNullOrEmpty(methodName), "Invalid method name.");
        //    Debug.Assert(parameterTypes != null, "Invalid parameter type array.");
        //    Debug.Assert(typeArguments != null, "Invalid type arguments array.");

        //    // Build a preliminary list of method candidates that contain roughly the same signature.
        //    var methodCandidates = this.GetMethodCandidates(methodName, parameterTypes, typeArguments, bindingFlags, modifiers);

        //    // Search of ambiguous methods (methods with the same signature).
        //    MethodInfo[] finalCandidates = new MethodInfo[methodCandidates.Count];
        //    methodCandidates.CopyTo(finalCandidates, 0);

        //    if ((parameterTypes != null) && (parameterTypes.Length == 0))
        //    {
        //        for (int i = 0; i < finalCandidates.Length; i++)
        //        {
        //            MethodInfo methodInfo = finalCandidates[i];

        //            if (!RuntimeTypeHelper.CompareMethodSigAndName(methodInfo, finalCandidates[0]))
        //            {
        //                throw new AmbiguousMatchException();
        //            }
        //        }

        //        // All the methods have the exact same name and sig so return the most derived one.
        //        return RuntimeTypeHelper.FindMostDerivedNewSlotMeth(finalCandidates, finalCandidates.Length) as MethodInfo;
        //    }

        //    // Now that we have a preliminary list of candidates, select the most appropriate one.
        //    return RuntimeTypeHelper.SelectMethod(bindingFlags, finalCandidates, parameterTypes, modifiers) as MethodInfo;
        //}

        //private LinkedList<MethodInfo> GetMethodCandidates(string methodName, Type[] parameterTypes, Type[] typeArguments, BindingFlags bindingFlags, ParameterModifier[] modifiers)
        //{
        //    Debug.Assert(!string.IsNullOrEmpty(methodName), "methodName should not be null.");
        //    Debug.Assert(parameterTypes != null, "parameterTypes should not be null.");
        //    Debug.Assert(typeArguments != null, "typeArguments should not be null.");

        //    LinkedList<MethodInfo> methodCandidates = new LinkedList<MethodInfo>();
        //    LinkedList<MethodInfo> methods = null;

        //    if (!this.GenericMethodCache.TryGetValue(methodName, out methods))
        //    {
        //        return methodCandidates;
        //    }

        //    Debug.Assert(methods != null, "methods should not be null.");

        //    foreach (MethodInfo candidate in methods)
        //    {
        //        bool paramMatch = true;
        //        ParameterInfo[] candidateParams = null;
        //        Type[] genericArgs = candidate.GetGenericArguments();
        //        Type sourceParameterType = null;

        //        if (genericArgs.Length != typeArguments.Length)
        //        {
        //            continue;
        //        }

        //        // Since we can't just get the correct MethodInfo from Reflection,
        //        // we will just match the number of parameters, their order, and their type
        //        var methodCandidate = candidate;
        //        candidateParams = methodCandidate.GetParameters();

        //        if (candidateParams.Length != parameterTypes.Length)
        //        {
        //            continue;
        //        }

        //        // Exact binding
        //        if ((bindingFlags & BindingFlags.ExactBinding) != 0)
        //        {
        //            int i = 0;

        //            foreach (ParameterInfo candidateParam in candidateParams)
        //            {
        //                sourceParameterType = parameterTypes[i++];

        //                if (candidateParam.ParameterType.ContainsGenericParameters)
        //                {
        //                    // Since we have a generic parameter here, just make sure the IsArray matches.
        //                    if (candidateParam.ParameterType.IsArray != sourceParameterType.IsArray)
        //                    {
        //                        paramMatch = false;
        //                        break;
        //                    }
        //                }
        //                else
        //                {
        //                    if (candidateParam.ParameterType != sourceParameterType)
        //                    {
        //                        paramMatch = false;
        //                        break;
        //                    }
        //                }
        //            }

        //            if (paramMatch)
        //            {
        //                methodCandidates.AddLast(methodCandidate);
        //                continue;
        //            }
        //        }
        //        else
        //        {
        //            methodCandidates.AddLast(methodCandidate);
        //        }
        //    }

        //    return methodCandidates;
        //}

        #endregion
    }
}