Fixed a compilation error when targeting Windows Phone; ChainStream now uses a params list for its constructor; added object cloning framework with support for deep and shallow cloning as well as cloning based on fields or properties

git-svn-id: file:///srv/devel/repo-conversion/nusu@223 d2e56fa2-650e-0410-a79f-9358c0239efd

Source/Cloning/ExpressionTreeCloner.cs

@@ -0,0 +1,153 @@
+#region CPL License
+/*
+Nuclex Framework
+Copyright (C) 2002-2010 Nuclex Development Labs
+
+This library is free software; you can redistribute it and/or
+modify it under the terms of the IBM Common Public License as
+published by the IBM Corporation; either version 1.0 of the
+License, or (at your option) any later version.
+
+This library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+IBM Common Public License for more details.
+
+You should have received a copy of the IBM Common Public
+License along with this library
+*/
+#endregion
+
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+
+namespace Nuclex.Support.Cloning {
+
+#if false
+
+  /// <summary>An action that takes its arguments as references to a structure</summary>
+  /// <typeparam name="TFirst">Type of the first argument to the method</typeparam>
+  /// <typeparam name="TSecond">Type of the second argument to the method</typeparam>
+  /// <param name="first">First argument to the method</param>
+  /// <param name="second">Second argument to the method</param>
+  public delegate void ReferenceAction<TFirst, TSecond>(ref TFirst first, ref TSecond second)
+    where TFirst : struct
+    where TSecond : struct;
+
+  /// <summary>
+  ///   Cloning factory which uses expression trees to improve performance when cloning
+  ///   is a high-frequency action.
+  /// </summary>
+  public class ExpressionTreeCloneFactory : ICloneFactory {
+
+    /// <summary>
+    ///   Creates a deep clone of the specified object, also creating clones of all
+    ///   child objects being referenced
+    /// </summary>
+    /// <typeparam name="TCloned">Type of the object that will be cloned</typeparam>
+    /// <param name="objectToClone">Object that will be cloned</param>
+    /// <param name="usePropertyBasedClone">
+    ///   Whether to clone the object based on its properties only
+    /// </param>
+    /// <returns>A deep clone of the provided object</returns>
+    public TCloned DeepClone<TCloned>(TCloned objectToClone, bool usePropertyBasedClone)
+      where TCloned : new() {
+      throw new NotImplementedException();
+    }
+
+    /// <summary>
+    ///   Creates a shallow clone of the specified object, reusing any referenced objects
+    /// </summary>
+    /// <typeparam name="TCloned">Type of the object that will be cloned</typeparam>
+    /// <param name="objectToClone">Object that will be cloned</param>
+    /// <param name="usePropertyBasedClone">
+    ///   Whether to clone the object based on its properties only
+    /// </param>
+    /// <returns>A shallow clone of the provided object</returns>
+    public TCloned ShallowClone<TCloned>(TCloned objectToClone, bool usePropertyBasedClone)
+      where TCloned : new() {
+      throw new NotImplementedException();
+    }
+
+    /// <summary>
+    ///   Transfers the state of one object into another, creating clones of referenced objects
+    /// </summary>
+    /// <typeparam name="TState">Type of the object whose sate will be transferred</typeparam>
+    /// <param name="original">Original instance the state will be taken from</param>
+    /// <param name="target">Target instance the state will be written to</param>
+    /// <param name="propertyBased">Whether to perform a property-based state copy</param>
+    public void DeepCopyState<TState>(TState original, TState target, bool propertyBased)
+      where TState : class {
+      throw new NotImplementedException();
+    }
+
+    /// <summary>
+    ///   Transfers the state of one object into another, creating clones of referenced objects
+    /// </summary>
+    /// <typeparam name="TState">Type of the object whose sate will be transferred</typeparam>
+    /// <param name="original">Original instance the state will be taken from</param>
+    /// <param name="target">Target instance the state will be written to</param>
+    /// <param name="propertyBased">Whether to perform a property-based state copy</param>
+    public void DeepCopyState<TState>(ref TState original, ref TState target, bool propertyBased)
+      where TState : struct {
+      throw new NotImplementedException();
+    }
+
+    /// <summary>Transfers the state of one object into another</summary>
+    /// <typeparam name="TState">Type of the object whose sate will be transferred</typeparam>
+    /// <param name="original">Original instance the state will be taken from</param>
+    /// <param name="target">Target instance the state will be written to</param>
+    /// <param name="propertyBased">Whether to perform a property-based state copy</param>
+    public void ShallowCopyState<TState>(TState original, TState target, bool propertyBased)
+      where TState : class {
+      throw new NotImplementedException();
+    }
+
+    /// <summary>Transfers the state of one object into another</summary>
+    /// <typeparam name="TState">Type of the object whose sate will be transferred</typeparam>
+    /// <param name="original">Original instance the state will be taken from</param>
+    /// <param name="target">Target instance the state will be written to</param>
+    /// <param name="propertyBased">Whether to perform a property-based state copy</param>
+    public void ShallowCopyState<TState>(ref TState original, ref TState target, bool propertyBased)
+      where TState : struct {
+      throw new NotImplementedException();
+    }
+
+    /// <summary>
+    ///   Compiles a method that copies the state of one object into another object
+    /// </summary>
+    /// <typeparam name="TCloned">Type of object whose state will be copied</typeparam>
+    /// <param name="deepClone">Whether to create clones of the referenced objects</param>
+    /// <returns>A method that copies the state from one object into another object</returns>
+    public static Action<TCloned, TCloned> CreateReferenceCopier<TCloned>(bool deepClone)
+      where TCloned : class {
+      throw new NotImplementedException();
+    }
+
+    /// <summary>
+    ///   Compiles a method that copies the state of one object into another object
+    /// </summary>
+    /// <typeparam name="TCloned">Type of object whose state will be copied</typeparam>
+    /// <param name="deepClone">Whether to create clones of the referenced objects</param>
+    /// <returns>A method that copies the state from one object into another object</returns>
+    public static ReferenceAction<TCloned, TCloned> CreateValueCopier<TCloned>(bool deepClone)
+      where TCloned : struct {
+      throw new NotImplementedException();
+    }
+
+    /// <summary>Compiles a method that creates a clone of an object</summary>
+    /// <typeparam name="TCloned">Type of object that will be cloned</typeparam>
+    /// <param name="deepClone">Whether to create clones of the referenced objects</param>
+    /// <returns>A method that clones an object of the provided type</returns>
+    public static Func<TCloned, TCloned> CreateCloner<TCloned>(bool deepClone)
+      where TCloned : class, new() {
+      throw new NotImplementedException();
+    }
+
+  }
+
+#endif
+
+} // namespace Nuclex.Support.Cloning