From 013b7a752715face9eb340a1de5ddf3c18c7b876 Mon Sep 17 00:00:00 2001
From: Daniel Cazzulino <daniel@cazzulino.com>
Date: Tue, 3 Sep 2024 10:39:28 -0300
Subject: [PATCH] Add an easy way to check for design-time builds

---
 .../Analyzer/StatusReportingGenerator.cs       |  9 ++++++++-
 .../SponsorLink/AnalyzerOptionsExtensions.cs   | 18 ++++++++++++++++++
 2 files changed, 26 insertions(+), 1 deletion(-)
 create mode 100644 samples/dotnet/SponsorLink/AnalyzerOptionsExtensions.cs

diff --git a/samples/dotnet/Analyzer/StatusReportingGenerator.cs b/samples/dotnet/Analyzer/StatusReportingGenerator.cs
index a1437f9d..964a2fd8 100644
--- a/samples/dotnet/Analyzer/StatusReportingGenerator.cs
+++ b/samples/dotnet/Analyzer/StatusReportingGenerator.cs
@@ -17,7 +17,14 @@ public void Initialize(IncrementalGeneratorInitializationContext context)
             {
                 var (manifests, options) = source;
                 var status = Diagnostics.GetOrSetStatus(manifests, options);
-                spc.AddSource("StatusReporting.cs", $"// Status: {status}");
+                spc.AddSource("StatusReporting.cs",
+                    $"""
+                    // Status: {status}
+                    // DesignTimeBuild: {options.IsDesignTimeBuild()}
+                    """);
+                spc.ReportDiagnostic(Diagnostic.Create("SL200", "Compiler", "Don't disable me!",
+                    DiagnosticSeverity.Warning,
+                    DiagnosticSeverity.Warning, true, 1));
             });
     }
 }
diff --git a/samples/dotnet/SponsorLink/AnalyzerOptionsExtensions.cs b/samples/dotnet/SponsorLink/AnalyzerOptionsExtensions.cs
new file mode 100644
index 00000000..d8c29c6b
--- /dev/null
+++ b/samples/dotnet/SponsorLink/AnalyzerOptionsExtensions.cs
@@ -0,0 +1,18 @@
+using Microsoft.CodeAnalysis.Diagnostics;
+
+static class AnalyzerOptionsExtensions
+{
+    /// <summary>
+    /// Gets whether the current build is a design-time build.
+    /// </summary>
+    public static bool IsDesignTimeBuild(this AnalyzerConfigOptionsProvider options) =>
+        options.GlobalOptions.TryGetValue("build_property.DesignTimeBuild", out var value) &&
+        bool.TryParse(value, out var isDesignTime) && isDesignTime;
+
+    /// <summary>
+    /// Gets whether the current build is a design-time build.
+    /// </summary>
+    public static bool IsDesignTimeBuild(this AnalyzerConfigOptions options) =>
+        options.TryGetValue("build_property.DesignTimeBuild", out var value) &&
+        bool.TryParse(value, out var isDesignTime) && isDesignTime;
+}
\ No newline at end of file