Support for configurations remapping in solution files

src/OmniSharp.MSBuild/ProjectFile/ProjectFileInfo.cs

@@ -110,7 +110,7 @@ public static (ProjectFileInfo, ImmutableArray<MSBuildDiagnostic>, ProjectLoaded
                 return (null, ImmutableArray<MSBuildDiagnostic>.Empty, null);
             }
 
-            var (projectInstance, diagnostics) = loader.BuildProject(filePath);
+            var (projectInstance, diagnostics) = loader.BuildProject(filePath, projectIdInfo?.ConfigurationsInSolution);
             if (projectInstance == null)
             {
                 return (null, diagnostics, null);
@@ -135,7 +135,7 @@ public static (ProjectFileInfo, ImmutableArray<MSBuildDiagnostic>, ProjectLoaded
 
         public (ProjectFileInfo, ImmutableArray<MSBuildDiagnostic>, ProjectLoadedEventArgs) Reload(ProjectLoader loader)
         {
-            var (projectInstance, diagnostics) = loader.BuildProject(FilePath);
+            var (projectInstance, diagnostics) = loader.BuildProject(FilePath, ProjectIdInfo?.ConfigurationsInSolution);
             if (projectInstance == null)
             {
                 return (null, diagnostics, null);

src/OmniSharp.MSBuild/ProjectIdInfo.cs

@@ -1,4 +1,5 @@
 using System;
+using System.Collections.Generic;
 using Microsoft.CodeAnalysis;
 
 namespace OmniSharp.MSBuild
@@ -13,5 +14,6 @@ public ProjectIdInfo(ProjectId id, bool isDefinedInSolution)
 
         public ProjectId Id { get; set; }
         public bool IsDefinedInSolution { get; set; }
+        public Dictionary<string, string> ConfigurationsInSolution { get; set; }
     }
 }

src/OmniSharp.MSBuild/ProjectLoader.cs

@@ -67,11 +67,12 @@ private static Dictionary<string, string> CreateGlobalProperties(
             return globalProperties;
         }
 
-        public (MSB.Execution.ProjectInstance projectInstance, ImmutableArray<MSBuildDiagnostic> diagnostics) BuildProject(string filePath)
+        public (MSB.Execution.ProjectInstance projectInstance, ImmutableArray<MSBuildDiagnostic> diagnostics) BuildProject(
+            string filePath, Dictionary<string, string> configurationsInSolution)
         {
             using (_sdksPathResolver.SetSdksPathEnvironmentVariable(filePath))
             {
-                var evaluatedProject = EvaluateProjectFileCore(filePath);
+                var evaluatedProject = EvaluateProjectFileCore(filePath, configurationsInSolution);
 
                 SetTargetFrameworkIfNeeded(evaluatedProject);
 
@@ -115,10 +116,37 @@ public MSB.Evaluation.Project EvaluateProjectFile(string filePath)
             }
         }
 
-        private MSB.Evaluation.Project EvaluateProjectFileCore(string filePath)
+        private MSB.Evaluation.Project EvaluateProjectFileCore(string filePath, Dictionary<string, string> projectConfigurationsInSolution = null)
         {
+            var localProperties = new Dictionary<string, string>(_globalProperties);
+            if (projectConfigurationsInSolution != null
+                && localProperties.TryGetValue(PropertyNames.Configuration, out string solutionConfiguration))
+            {
+                if (!localProperties.TryGetValue(PropertyNames.Platform, out string solutionPlatform))
+                {
+                    solutionPlatform = "Any CPU";
+                }
+
+                var solutionSelector = $"{solutionConfiguration}|{solutionPlatform}.ActiveCfg";
+                _logger.LogDebug($"Found configuration `{solutionSelector}` in solution for '{filePath}'.");
+
+                if (projectConfigurationsInSolution.TryGetValue(solutionSelector, out string projectSelector))
+                {
+                    var splitted = projectSelector.Split('|');
+                    if (splitted.Length == 2)
+                    {
+                        var projectConfiguration = splitted[0];
+                        localProperties[PropertyNames.Configuration] = projectConfiguration;
+                        // NOTE: Solution often defines configuration as `Any CPU` wheras project relies on `AnyCPU`
+                        var projectPlatform = splitted[1].Replace("Any CPU", "AnyCPU");
+                        localProperties[PropertyNames.Platform] = projectPlatform;
+                        _logger.LogInformation($"Using configuration from solution: `{projectConfiguration}|{projectPlatform}`");
+                    }
+                }
+            }
+
             // Evaluate the MSBuild project
-            var projectCollection = new MSB.Evaluation.ProjectCollection(_globalProperties);
+            var projectCollection = new MSB.Evaluation.ProjectCollection(localProperties);
 
             var toolsVersion = _options.ToolsVersion;
             if (string.IsNullOrEmpty(toolsVersion) || Version.TryParse(toolsVersion, out _))

src/OmniSharp.MSBuild/ProjectSystem.cs

@@ -161,6 +161,28 @@ public void Initalize(IConfiguration configuration)
             var processedProjects = new HashSet<string>(StringComparer.OrdinalIgnoreCase);
             var result = new List<(string, ProjectIdInfo)>();
 
+            var projectConfigurationsInSln = new Dictionary<ProjectId, Dictionary<string, string>>();
+            foreach (var globalSection in solutionFile.GlobalSections)
+            {
+                if (globalSection.Name == "ProjectConfigurationPlatforms")
+                {
+                    _logger.LogDebug($"Parsing ProjectConfigurationPlatforms of '{solutionFilePath}'.");
+                    foreach (var entry in globalSection.Properties)
+                    {
+                        var guid = Guid.Parse(entry.Name.Substring(0, 38));
+                        var projId = ProjectId.CreateFromSerialized(guid);
+                        var solutionConfig = entry.Name.Substring(39);
+
+                        if (!projectConfigurationsInSln.TryGetValue(projId, out var dict))
+                        {
+                            dict = new Dictionary<string, string>();
+                            projectConfigurationsInSln.Add(projId, dict);
+                        }
+                        dict.Add(solutionConfig, entry.Value);
+                    }
+                }
+            }
+
             foreach (var project in solutionFile.Projects)
             {
                 if (project.IsNotSupported)
@@ -182,6 +204,10 @@ public void Initalize(IConfiguration configuration)
                 if (string.Equals(Path.GetExtension(projectFilePath), ".csproj", StringComparison.OrdinalIgnoreCase))
                 {
                     var projectIdInfo = new ProjectIdInfo(ProjectId.CreateFromSerialized(new Guid(project.ProjectGuid)), true);
+                    if (projectConfigurationsInSln.TryGetValue(projectIdInfo.Id, out var configurations))
+                    {
+                        projectIdInfo.ConfigurationsInSolution = configurations;
+                    }
                     result.Add((projectFilePath, projectIdInfo));
                 }
 

test-assets/test-projects/TwoProjectsWithSolutionAndCustomConfigurations/App/App.csproj

@@ -0,0 +1,21 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <ItemGroup>
+    <ProjectReference Include="..\Lib\Lib.csproj" />
+  </ItemGroup>
+
+  <PropertyGroup>
+    <Configurations>Debug1;Release1</Configurations>
+  </PropertyGroup>
+
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Release1|AnyCPU'">
+    <OutputType>Exe</OutputType>
+    <TargetFramework>netcoreapp2.1</TargetFramework>
+  </PropertyGroup>
+
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Debug1|AnyCPU'">
+    <OutputType>Exe</OutputType>
+    <TargetFramework>netcoreapp2.1</TargetFramework>
+  </PropertyGroup>
+
+</Project>

test-assets/test-projects/TwoProjectsWithSolutionAndCustomConfigurations/App/Program.cs

@@ -0,0 +1,12 @@
+using System;
+
+namespace App
+{
+    class Program
+    {
+        static void Main(string[] args)
+        {
+            Console.WriteLine("Hello World!");
+        }
+    }
+}

test-assets/test-projects/TwoProjectsWithSolutionAndCustomConfigurations/Lib/Class1.cs

@@ -0,0 +1,8 @@
+using System;
+
+namespace Lib
+{
+    public class Class1
+    {
+    }
+}

test-assets/test-projects/TwoProjectsWithSolutionAndCustomConfigurations/Lib/Lib.csproj

@@ -0,0 +1,15 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <Configurations>Debug2;Release2</Configurations>
+  </PropertyGroup>
+
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Release2|AnyCPU'">
+    <TargetFramework>netstandard1.3</TargetFramework>
+  </PropertyGroup>
+
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Debug2|AnyCPU'">
+    <TargetFramework>netstandard1.3</TargetFramework>
+  </PropertyGroup>
+
+</Project>

test-assets/test-projects/TwoProjectsWithSolutionAndCustomConfigurations/TwoProjectsWithSolutionAndCustomConfigurations.sln

@@ -0,0 +1,30 @@
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 16
+VisualStudioVersion = 16.0.30204.135
+MinimumVisualStudioVersion = 15.0.26124.0
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "App", "App\App.csproj", "{632DFE45-B56E-4158-8F27-45E2BA0BAFCF}"
+EndProject
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Lib", "Lib\Lib.csproj", "{CE41561B-5D13-4688-8686-EEFF744BE8B5}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		DebugSln|Any CPU = DebugSln|Any CPU
+		ReleaseSln|Any CPU = ReleaseSln|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{632DFE45-B56E-4158-8F27-45E2BA0BAFCF}.DebugSln|Any CPU.ActiveCfg = Debug1|Any CPU
+		{632DFE45-B56E-4158-8F27-45E2BA0BAFCF}.DebugSln|Any CPU.Build.0 = Debug1|Any CPU
+		{632DFE45-B56E-4158-8F27-45E2BA0BAFCF}.ReleaseSln|Any CPU.ActiveCfg = Release1|Any CPU
+		{632DFE45-B56E-4158-8F27-45E2BA0BAFCF}.ReleaseSln|Any CPU.Build.0 = Release1|Any CPU
+		{CE41561B-5D13-4688-8686-EEFF744BE8B5}.DebugSln|Any CPU.ActiveCfg = Debug2|Any CPU
+		{CE41561B-5D13-4688-8686-EEFF744BE8B5}.DebugSln|Any CPU.Build.0 = Debug2|Any CPU
+		{CE41561B-5D13-4688-8686-EEFF744BE8B5}.ReleaseSln|Any CPU.ActiveCfg = Debug2|Any CPU
+		{CE41561B-5D13-4688-8686-EEFF744BE8B5}.ReleaseSln|Any CPU.Build.0 = Debug2|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {D5E71A6E-0C92-4CB1-8260-00DE6C30724F}
+	EndGlobalSection
+EndGlobal

tests/OmniSharp.MSBuild.Tests/WorkspaceInformationTests.cs

@@ -124,6 +124,31 @@ public async Task TwoProjectsWithSolution()
             }
         }
 
+        [Fact]
+        public async Task TwoProjectsWithSolutionAndCustomConfigurations()
+        {
+            var configData = new Dictionary<string, string> { [$"MsBuild:{nameof(Options.MSBuildOptions.Configuration)}"] = "ReleaseSln" };
+            using (var testProject = await TestAssets.Instance.GetTestProjectAsync("TwoProjectsWithSolutionAndCustomConfigurations"))
+            using (var host = CreateMSBuildTestHost(testProject.Directory, configurationData: configData))
+            {
+                var workspaceInfo = await host.RequestMSBuildWorkspaceInfoAsync();
+
+                Assert.Equal("TwoProjectsWithSolutionAndCustomConfigurations.sln", Path.GetFileName(workspaceInfo.SolutionPath));
+                Assert.NotNull(workspaceInfo.Projects);
+                Assert.Equal(2, workspaceInfo.Projects.Count);
+
+                var firstProject = workspaceInfo.Projects[0];
+                Assert.Equal("App.csproj", Path.GetFileName(firstProject.Path));
+                Assert.Equal(".NETCoreApp,Version=v2.1", firstProject.TargetFramework);
+                Assert.Equal("netcoreapp2.1", firstProject.TargetFrameworks[0].ShortName);
+
+                var secondProject = workspaceInfo.Projects[1];
+                Assert.Equal("Lib.csproj", Path.GetFileName(secondProject.Path));
+                Assert.Equal(".NETStandard,Version=v1.3", secondProject.TargetFramework);
+                Assert.Equal("netstandard1.3", secondProject.TargetFrameworks[0].ShortName);
+            }
+        }
+
         [Fact]
         public async Task TwoProjectWithGeneratedFile()
         {