enable deserialization of cached project file data and fix legacy project tests

.github/workflows/build.yml

@@ -22,7 +22,7 @@ jobs:
         run: dotnet tool restore
       - name: Install latest F# from mono (.net 4.x)
         if: runner.os == 'Linux'
-        run: ./install_mono_from_microsoft_deb_packages.sh
+        run: ./install_mono_from_microsoft_deb_packages.sh && which msbuild
       - name: Run build
         run: dotnet fake build -t Pack
       - name: Upload NuGet packages

.gitignore

@@ -20,6 +20,7 @@ x86/
 bld/
 [Bb]in/
 [Oo]bj/
+*.binlog
 
 # Visual Studio 2015 cache/options directory
 .vs/

src/Ionide.ProjInfo.ProjectSystem/Project.fs

@@ -6,7 +6,8 @@ open FSharp.Compiler.CodeAnalysis
 open Newtonsoft.Json
 open Ionide.ProjInfo
 
-type internal ProjectCrackerCache =
+// need to expose this so that json.net can serialize it
+type ProjectCrackerCache =
     { Options: FSharpProjectOptions
       OutFile: string option
       References: string list

src/Ionide.ProjInfo.ProjectSystem/Workspace.fs

@@ -53,7 +53,11 @@ let internal loadInBackground onLoaded (loader: IWorkspaceLoader) (projects: Pro
 
     for project in resProjects do
         match project.Response with
-        | Some res -> onLoaded (ProjectSystemState.Loaded(res.Options, res.ExtraInfo, res.Items, false))
+        | Some res ->
+            // if we have project data already then that means it was cached.
+            // fire a loading/loaded event pair so that outside observers get the correct loading experience
+            onLoaded (ProjectSystemState.Loading project.FileName )
+            onLoaded (ProjectSystemState.Loaded(res.Options, res.ExtraInfo, res.Items, true))
         | None -> () //Shouldn't happen
 
     otherProjects |> List.map (fun n -> n.FileName) |> getProjectOptions loader onLoaded binaryLogs

src/Ionide.ProjInfo/Library.fs

@@ -133,12 +133,11 @@ module LegacyFrameworkDiscovery =
             // example: C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\MSBuild\Current\Bin\MSBuild.exe
             let msbuildExe =
                 SdkDiscovery.execDotnet vsWhereDir vsWhereExe [ "-find"; "MSBuild\**\Bin\MSBuild.exe" ]
-                |> Seq.last
-                |> FileInfo
-            if msbuildExe.Exists then
-                msbuildExe |> Some
-            else
-                None
+                |> Seq.tryHead
+                |> Option.map FileInfo
+            match msbuildExe with
+            | Some exe when exe.Exists -> Some exe
+            | _ -> None
 
     let internal msbuildLibPath(msbuildDir: DirectoryInfo) =
         if isLinux then
@@ -219,7 +218,7 @@ module Init =
     let internal setupForLegacyFramework (msbuildPathDir: DirectoryInfo) =
         let msbuildLibPath = LegacyFrameworkDiscovery.msbuildLibPath msbuildPathDir
 
-        // gotta set some env variables so msbuild interop works        
+        // gotta set some env variables so msbuild interop works
         if LegacyFrameworkDiscovery.isUnix then
             Environment.SetEnvironmentVariable("MSBuildBinPath", "/usr/lib/mono/msbuild/Current/bin")
             Environment.SetEnvironmentVariable("FrameworkPathOverride", "/usr/lib/mono/4.5")
@@ -369,7 +368,7 @@ module ProjectLoader =
                 "_ComputeNonExistentFileProperty"
                 "CoreCompile" |]
         else
-            [|                      
+            [|
                 "ResolveAssemblyReferencesDesignTime"
                 "ResolveProjectReferencesDesignTime"
                 "ResolvePackageDependenciesDesignTime"

test/Ionide.ProjInfo.Tests/Ionide.ProjInfo.Tests.fsproj

@@ -17,4 +17,4 @@
     <ProjectReference Include="..\..\src\Ionide.ProjInfo.ProjectSystem\Ionide.ProjInfo.ProjectSystem.fsproj" />
   </ItemGroup>
   <Import Project="..\..\.paket\Paket.Restore.targets" />
-</Project>
+</Project>