Use Microsoft.NetFX20 package in ResultProviders

src/ExpressionEvaluator/CSharp/Source/ResultProvider/CSharpResultProvider.csproj

@@ -12,22 +12,14 @@
     <AuthenticodeCertificateName>MicrosoftSHA1Win8WinBlue</AuthenticodeCertificateName>
     <RootNamespace>Microsoft.CodeAnalysis.CSharp.ExpressionEvaluator</RootNamespace>
     <AssemblyName>Microsoft.CodeAnalysis.CSharp.ExpressionEvaluator.ResultProvider</AssemblyName>
-    <!--
-      As a convenience for developer machines without .NET 2.0 installed, we'll allow building against v4.*.
-      However, "real" builds must still target v2.0, and we always want to target 2.0 if it's present.
-    -->
-    <TargetFrameworkVersion Condition="Exists('$(WinDir)\Microsoft.NET\Framework\v2.0.50727\mscorlib.dll') OR '$(RealSignBuild)' == 'true'">v2.0</TargetFrameworkVersion>
-    <!--
-      We get warnings about missing XML comments for publicly visible members in Microsoft.CodeAnalysis.CSharp.SyntaxKind
-    -->
-    <NoWarn>1591</NoWarn>
+    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+    <GenerateTargetFrameworkAttribute>false</GenerateTargetFrameworkAttribute>
+    <AddAdditionalExplicitAssemblyReferences>false</AddAdditionalExplicitAssemblyReferences>
+    <NoStdLib>true</NoStdLib>
     <SolutionDir Condition="'$(SolutionDir)' == '' OR '$(SolutionDir)' == '*Undefined*'">..\..\..\..\..\</SolutionDir>
     <RestorePackages>true</RestorePackages>
     <NeedsPhoneCopy>true</NeedsPhoneCopy>
   </PropertyGroup>
-  <ItemGroup>
-    <Reference Include="System" />
-  </ItemGroup>
   <ItemGroup Label="Linked Files">
     <Compile Include="..\..\..\..\Compilers\CSharp\Portable\Parser\CharacterInfo.cs">
       <Link>Compiler\Parser\CharacterInfo.cs</Link>
@@ -52,6 +44,7 @@
     </Compile>
   </ItemGroup>
   <ItemGroup Label="File References">
+    <Reference Include="..\..\..\..\..\packages\Microsoft.NetFX20.1.0.0-rc2\lib\net20\mscorlib.dll" />
     <Reference Include="$(OutDir)Microsoft.VisualStudio.Debugger.Engine.dll" />
     <Reference Include="$(OutDir)Microsoft.VisualStudio.Debugger.Metadata.dll" />
   </ItemGroup>

src/ExpressionEvaluator/CSharp/Source/ResultProvider/Helpers/Placeholders.cs

@@ -20,4 +20,4 @@ namespace System.Runtime.CompilerServices
     internal class ExtensionAttribute : Attribute
     {
     }
-}
+}
\ No newline at end of file

src/ExpressionEvaluator/CSharp/Source/ResultProvider/packages.config

 <?xml version="1.0" encoding="utf-8"?>
 <packages>
-</packages>
+  <package id="Microsoft.NetFX20" version="1.0.0-rc2" targetFramework="net20" />  
+</packages>
\ No newline at end of file

src/ExpressionEvaluator/Core/Source/ResultProvider/Helpers/EvalResultDataItem.cs

@@ -113,7 +113,6 @@ private static DkmEvaluationResultFlags GetFlags(DkmClrValue value)
 
         protected override void OnClose()
         {
-            Debug.WriteLine("Closing " + FullName);
             Value.Close();
         }
     }

src/ExpressionEvaluator/Core/Source/ResultProvider/ResultProvider.csproj

@@ -12,20 +12,16 @@
     <AuthenticodeCertificateName>MicrosoftSHA1Win8WinBlue</AuthenticodeCertificateName>
     <RootNamespace>Microsoft.CodeAnalysis.ExpressionEvaluator</RootNamespace>
     <AssemblyName>Microsoft.CodeAnalysis.ExpressionEvaluator.ResultProvider</AssemblyName>
-    <!--
-      As a convenience for developer machines without .NET 2.0 installed, we'll allow building against v4.*.
-      However, "real" builds must still target v2.0, and we always want to target 2.0 if it's present.
-    -->
-    <TargetFrameworkVersion Condition="Exists('$(WinDir)\Microsoft.NET\Framework\v2.0.50727\mscorlib.dll') OR '$(RealSignBuild)' == 'true'">v2.0</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+    <GenerateTargetFrameworkAttribute>false</GenerateTargetFrameworkAttribute>
+    <AddAdditionalExplicitAssemblyReferences>false</AddAdditionalExplicitAssemblyReferences>
+    <NoStdLib>true</NoStdLib>
     <SolutionDir Condition="'$(SolutionDir)' == '' OR '$(SolutionDir)' == '*Undefined*'">..\..\..\..\..\</SolutionDir>
     <UseCommonOutputDirectory>True</UseCommonOutputDirectory>
     <!-- Don't transitively copy output files, since everything builds to the same folder. -->
     <RestorePackages>true</RestorePackages>
     <NeedsPhoneCopy>true</NeedsPhoneCopy>
   </PropertyGroup>
-  <ItemGroup>
-    <Reference Include="System" />
-  </ItemGroup>
   <ItemGroup Label="Linked Files">
     <Compile Include="..\..\..\..\Compilers\Core\Portable\CaseInsensitiveComparison.cs">
       <Link>Compiler\CaseInsensitiveComparison.cs</Link>
@@ -69,8 +65,10 @@
     <Compile Include="..\ExpressionCompiler\DateTimeUtilities.cs">
       <Link>Helpers\DateTimeUtilities.cs</Link>
     </Compile>
+    <Compile Include="SystemHelpers.cs" />
   </ItemGroup>
   <ItemGroup Label="File References">
+    <Reference Include="..\..\..\..\..\packages\Microsoft.NetFX20.1.0.0-rc2\lib\net20\mscorlib.dll" />
     <Reference Include="$(OutDir)Microsoft.VisualStudio.Debugger.Engine.dll" />
     <Reference Include="$(OutDir)Microsoft.VisualStudio.Debugger.Metadata.dll" />
   </ItemGroup>
@@ -133,5 +131,4 @@
     <Import Project="..\..\..\..\..\build\VSL.Imports.Closed.targets" />
     <Import Project="$(SolutionDir)\.nuget\NuGet.targets" Condition="Exists('$(SolutionDir)\.nuget\NuGet.targets')" />
   </ImportGroup>
-</Project>
-
+</Project>
\ No newline at end of file

src/ExpressionEvaluator/Core/Source/ResultProvider/SystemHelpers.cs

+// A few dependencies from System.dll, which we want to avoid when compiling against Desktop Framework 2.0.
+namespace System.Linq
+{
+    internal class Dummy { }
+}
+    
+namespace System.Diagnostics
+{
+    internal static class Debug
+    {
+        [Conditional("DEBUG")]
+        public static void Assert(bool condition, string message = null)
+        {
+            if (!condition)
+            {
+                throw new InvalidOperationException(message ?? "Assertion failed");
+            }
+        }
+    }
+}
+
+namespace System.CodeDom.Compiler
+{
+    [AttributeUsage(AttributeTargets.All, Inherited = false, AllowMultiple = false)]
+    internal sealed class GeneratedCodeAttribute : Attribute
+    {
+        public GeneratedCodeAttribute(string tool, string version) { }
+    }
+}
+
+namespace System.ComponentModel
+{
+    public enum EditorBrowsableState
+    {
+        Always = 0,
+        Never = 1,
+        Advanced = 2
+    }
+
+    [AttributeUsage(AttributeTargets.All)]
+    internal sealed class EditorBrowsableAttribute : Attribute
+    {
+        public EditorBrowsableAttribute(EditorBrowsableState state) { }
+    }
+}
\ No newline at end of file

src/ExpressionEvaluator/Core/Source/ResultProvider/packages.config

 <?xml version="1.0" encoding="utf-8"?>
 <packages>
+  <package id="Microsoft.NetFX20" version="1.0.0-rc2" targetFramework="net20" />  
 </packages>

src/ExpressionEvaluator/VisualBasic/Source/ResultProvider/BasicResultProvider.vbproj

@@ -13,11 +13,12 @@
     <RootNamespace>
     </RootNamespace>
     <AssemblyName>Microsoft.CodeAnalysis.VisualBasic.ExpressionEvaluator.ResultProvider</AssemblyName>
-    <!--
-      As a convenience for developer machines without .NET 2.0 installed, we'll allow building against v4.*.
-      However, "real" builds must still target v2.0, and we always want to target 2.0 if it's present.
-    -->
-    <TargetFrameworkVersion Condition="Exists('$(WinDir)\Microsoft.NET\Framework\v2.0.50727\mscorlib.dll') OR '$(RealSignBuild)' == 'true'">v2.0</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+    <GenerateTargetFrameworkAttribute>false</GenerateTargetFrameworkAttribute>
+    <AddAdditionalExplicitAssemblyReferences>false</AddAdditionalExplicitAssemblyReferences>
+    <NoStdLib>true</NoStdLib>
+    <FrameworkPathOverride>..\..\..\..\..\packages\Microsoft.NetFX20.1.0.0-rc2\lib\net20</FrameworkPathOverride>
+    <NoStdLib>true</NoStdLib>
     <SolutionDir Condition="'$(SolutionDir)' == '' OR '$(SolutionDir)' == '*Undefined*'">..\..\..\..\..\</SolutionDir>
     <VBSyntaxGeneratorToolPath>$(OutDir)\VBSyntaxGenerator.exe</VBSyntaxGeneratorToolPath>
     <UseCommonOutputDirectory>True</UseCommonOutputDirectory>

src/ExpressionEvaluator/VisualBasic/Source/ResultProvider/packages.config

 <?xml version="1.0" encoding="utf-8"?>
 <packages>
-</packages>
+  <package id="Microsoft.NetFX20" version="1.0.0-rc2" targetFramework="net20" />  
+</packages>
\ No newline at end of file