AroundInvoke Providers and .gitignore for VS

.gitignore

@@ -0,0 +1,197 @@
+## Ignore Visual Studio temporary files, build results, and
+## files generated by popular Visual Studio add-ons.
+
+# User-specific files
+*.suo
+*.user
+*.userosscache
+*.sln.docstates
+
+# User-specific files (MonoDevelop/Xamarin Studio)
+*.userprefs
+
+# Build results
+[Dd]ebug/
+[Dd]ebugPublic/
+[Rr]elease/
+[Rr]eleases/
+x64/
+x86/
+build/
+bld/
+[Bb]in/
+[Oo]bj/
+Help/
+
+# Visual Studo 2015 cache/options directory
+.vs/
+
+# MSTest test Results
+[Tt]est[Rr]esult*/
+[Bb]uild[Ll]og.*
+
+# NUNIT
+*.VisualState.xml
+TestResult.xml
+
+# Build Results of an ATL Project
+[Dd]ebugPS/
+[Rr]eleasePS/
+dlldata.c
+
+*_i.c
+*_p.c
+*_i.h
+*.ilk
+*.meta
+*.obj
+*.pch
+*.pdb
+*.pgc
+*.pgd
+*.rsp
+*.sbr
+*.tlb
+*.tli
+*.tlh
+*.tmp
+*.tmp_proj
+*.log
+*.vspscc
+*.vssscc
+.builds
+*.pidb
+*.svclog
+*.scc
+
+# Chutzpah Test files
+_Chutzpah*
+
+# Visual C++ cache files
+ipch/
+*.aps
+*.ncb
+*.opensdf
+*.sdf
+*.cachefile
+
+# Visual Studio profiler
+*.psess
+*.vsp
+*.vspx
+
+# TFS 2012 Local Workspace
+$tf/
+
+# Guidance Automation Toolkit
+*.gpState
+
+# ReSharper is a .NET coding add-in
+_ReSharper*/
+*.[Rr]e[Ss]harper
+*.DotSettings.user
+
+# JustCode is a .NET coding addin-in
+.JustCode
+
+# TeamCity is a build add-in
+_TeamCity*
+
+# DotCover is a Code Coverage Tool
+*.dotCover
+
+# NCrunch
+_NCrunch_*
+.*crunch*.local.xml
+
+# MightyMoose
+*.mm.*
+AutoTest.Net/
+
+# Web workbench (sass)
+.sass-cache/
+
+# Installshield output folder
+[Ee]xpress/
+
+# DocProject is a documentation generator add-in
+DocProject/buildhelp/
+DocProject/Help/*.HxT
+DocProject/Help/*.HxC
+DocProject/Help/*.hhc
+DocProject/Help/*.hhk
+DocProject/Help/*.hhp
+DocProject/Help/Html2
+DocProject/Help/html
+
+# Click-Once directory
+publish/
+
+# Publish Web Output
+*.[Pp]ublish.xml
+*.azurePubxml
+# TODO: Comment the next line if you want to checkin your web deploy settings 
+# but database connection strings (with potential passwords) will be unencrypted
+*.pubxml
+*.publishproj
+
+# NuGet Packages
+*.nupkg
+# The packages folder can be ignored because of Package Restore
+**/packages/*
+# except build/, which is used as an MSBuild target.
+!**/packages/build/
+# Uncomment if necessary however generally it will be regenerated when needed
+#!**/packages/repositories.config
+
+# Windows Azure Build Output
+csx/
+*.build.csdef
+
+# Windows Store app package directory
+AppPackages/
+
+# Others
+*.[Cc]ache
+ClientBin/
+[Ss]tyle[Cc]op.*
+~$*
+*~
+*.dbmdl
+*.dbproj.schemaview
+*.pfx
+*.publishsettings
+node_modules/
+bower_components/
+
+# RIA/Silverlight projects
+Generated_Code/
+
+# Backup & report files from converting an old project file
+# to a newer Visual Studio version. Backup files are not needed,
+# because we have git ;-)
+_UpgradeReport_Files/
+Backup*/
+UpgradeLog*.XML
+UpgradeLog*.htm
+
+# SQL Server files
+*.mdf
+*.ldf
+
+# Business Intelligence projects
+*.rdl.data
+*.bim.layout
+*.bim_*.settings
+
+# Microsoft Fakes
+FakesAssemblies/
+
+# Node.js Tools for Visual Studio
+.ntvs_analysis.dat
+
+# Visual Studio 6 build log
+*.plg
+
+# Visual Studio 6 workspace options file
+*.opt

src/LinFu.AOP.Interfaces/CompositeAroundInvoke.cs

@@ -3,10 +3,17 @@
 
 namespace LinFu.AOP.Interfaces
 {
-    internal class CompositeAroundInvoke : IAroundInvoke
+    /// <summary>
+    /// Represents a class that can wrap itself around any given method call.
+    /// </summary>
+    public class CompositeAroundInvoke : IAroundInvoke
     {
         private readonly IList<IAroundInvoke> _aroundInvokeList = new List<IAroundInvoke>();
 
+        /// <summary>
+        /// Constructs a composit around invoke.
+        /// </summary>
+        /// <param name="aroundInvokeList">An collection of <see cref="IAroundInvoke"/> to </param>
         public CompositeAroundInvoke(IEnumerable<IAroundInvoke> aroundInvokeList)
         {
             if (aroundInvokeList == null)
@@ -22,7 +29,11 @@ public CompositeAroundInvoke(IEnumerable<IAroundInvoke> aroundInvokeList)
             }
         }
 
-
+        /// <summary>
+        /// This method will be called immediately after the actual method call is executed.
+        /// </summary>
+        /// <param name="context">The <see cref="IInvocationInfo"/> associated with the method call.</param>
+        /// <param name="returnValue">The value returned from the actual method call.</param>
         public void AfterInvoke(IInvocationInfo context, object returnValue)
         {
             foreach (var invoke in _aroundInvokeList)
@@ -31,6 +42,11 @@ public void AfterInvoke(IInvocationInfo context, object returnValue)
             }
         }
 
+        /// <summary>
+        /// This method will be called just before the actual method call is executed.
+        /// </summary>
+        /// <param name="context">The <see cref="IInvocationInfo"/> associated with the method call.</param>
+        /// <seealso cref="IInvocationInfo"/>
         public void BeforeInvoke(IInvocationInfo context)
         {
             foreach (var invoke in _aroundInvokeList)

src/LinFu.AOP.Interfaces/CompositeAroundInvokeProvider.cs

@@ -0,0 +1,64 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+
+namespace LinFu.AOP.Interfaces
+{
+    class CompositeAroundInvokeProvider : IAroundInvokeProvider
+    {
+        /// <summary>
+        /// Gets or sets the valud indicating the Predicates that will determine weather or not
+        /// the method should be intercepted by the associated <see cref="IAroundInvoke"/>.
+        /// </summary>
+        public IDictionary<IAroundInvoke, Func<IInvocationInfo, bool>> MethodInvokesAndPredicates { get; set; }
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="CompositeAroundInvokeProvider"/> class.
+        /// </summary>
+        /// <param name="aroundInvokeAndPredicates">
+        /// Dictionary of <see cref="IAroundInvoke"/> and predicates to determine if a method should be intercepted.
+        /// </param>
+        /// <remarks>
+        /// Specifing null for the aroundInvokeAndPredicates predicate will use the default ShouldReplace predicate
+        /// in <see cref="CompositeAroundInvokeProvider"/>.
+        /// </remarks>
+        public CompositeAroundInvokeProvider(IDictionary<IAroundInvoke, Func<IInvocationInfo, bool>> aroundInvokeAndPredicates)
+        {
+            if (aroundInvokeAndPredicates != null)
+            {
+                MethodInvokesAndPredicates = new Dictionary<IAroundInvoke, Func<IInvocationInfo, bool>>();
+                foreach (var invokeAndPredicate in aroundInvokeAndPredicates)
+                {
+                    MethodInvokesAndPredicates.Add(invokeAndPredicate.Key, invokeAndPredicate.Value ?? ShouldReplace);
+                }
+            }
+        }
+
+        /// <summary>
+        /// Determines whether or not a particular method body should be invoked around at runtime.
+        /// </summary>
+        /// <param name="context">The context surrounding the method call.</param>
+        /// <returns>Returns <c>true</c>.</returns>
+        public virtual bool ShouldReplace(IInvocationInfo context)
+        {
+            return true;
+        }
+
+        #region IAroundInvokeProvider Members
+        /// <summary>
+        /// Gets the surrounding implemetation for a given <see cref="IInvocationInfo">invocation context</see>.
+        /// </summary>
+        /// <param name="context">The context surrounding the method call.</param>
+        /// <returns>The interceptor that will invoke around the method at runtime.</returns>
+        public IAroundInvoke GetSurroundingImplementation(IInvocationInfo context)
+        {
+            var invokes = new HashSet<IAroundInvoke>();
+            foreach (var invokePredicate in MethodInvokesAndPredicates.Where(x => x.Value != null && x.Value(context)))
+            {
+                invokes.Add(invokePredicate.Key);
+            }
+            return (invokes.Count > 0) ? new CompositeAroundInvoke(invokes) : null;
+        }
+        #endregion
+    }
+}

src/LinFu.AOP.Interfaces/LinFu.AOP.Interfaces.csproj

@@ -65,6 +65,7 @@
     <Compile Include="BootstrapException.cs" />
     <Compile Include="BootStrapRegistry.cs" />
     <Compile Include="CallCounter.cs" />
+    <Compile Include="CompositeAroundInvokeProvider.cs" />
     <Compile Include="CompositeAroundInvoke.cs" />
     <Compile Include="Counter.cs" />
     <Compile Include="CountingInterceptor.cs" />
@@ -97,6 +98,7 @@
     <Compile Include="MethodBodyReplacementProviderRegistry.cs" />
     <Compile Include="MethodCallReplacementProviderRegistry.cs" />
     <Compile Include="MultithreadedCallCounter.cs" />
+    <Compile Include="SimpleAroundInvokeProvider.cs" />
     <Compile Include="SimpleMethodReplacementProvider.cs" />
     <Compile Include="SingleThreadedCallCounter.cs" />
     <Compile Include="TypeActivationContext.cs" />

src/LinFu.AOP.Interfaces/SimpleAroundInvokeProvider.cs

@@ -0,0 +1,55 @@
+using System;
+
+namespace LinFu.AOP.Interfaces
+{
+    /// <summary>
+    /// Represents the simplest possible <see cref="IAroundInvokeProvider"/> implementation
+    /// that will allow the user to use the original around invoke implementation as part
+    /// of the interceptor call.
+    /// </summary>
+    public class SimpleAroundInvokeProvider : IAroundInvokeProvider
+    {
+        /// <summary>
+        /// Gets or sets the value indicating the Predicate that will determine whether or not 
+        /// the method should be intercepted.
+        /// </summary>
+        /// <value>The interceptor predicate.</value>
+        public Func<IInvocationInfo, bool> MethodInvokePredicate { get; set; }
+
+        private readonly IAroundInvoke _around;
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="SimpleAroundInvokeProvider"/> class.
+        /// </summary>
+        /// <param name="around">The around invoke interceptor.</param>
+        public SimpleAroundInvokeProvider(IAroundInvoke around)
+        {
+            _around = around;
+            MethodInvokePredicate = ShouldReplace;
+        }
+
+        /// <summary>
+        /// Determines whether or not a particular method body should be invoked around at runtime.
+        /// </summary>
+        /// <param name="context">The context surrounding the method call.</param>
+        /// <returns>Returns <c>true</c>.</returns>
+        public virtual bool ShouldReplace(IInvocationInfo context)
+        {
+            return true;
+        }
+
+        #region IAroundInvokeProvider Members
+        /// <summary>
+        /// Gets the surrounding implemetation for a given <see cref="IInvocationInfo">invocation context</see>.
+        /// </summary>
+        /// <param name="context">The context surrounding the method call.</param>
+        /// <returns>The interceptor that will invoke around the method at runtime.</returns>
+        public IAroundInvoke GetSurroundingImplementation(IInvocationInfo context)
+        {
+            if (MethodInvokePredicate == null || !MethodInvokePredicate(context))
+                return null;
+            return _around;
+        }
+        #endregion
+    }
+}