add AssemblyMetadataAttribute output to assembly info

Author: smdn

src/Smdn.Reflection.ReverseGenerating.ListApi.Core/Smdn.Reflection.ReverseGenerating.ListApi/ApiListWriter.cs

@@ -88,6 +88,15 @@ private void WriteAssemblyInfo()
     BaseWriter.WriteLine($"//   InformationalVersion: {assembly.GetAssemblyMetadataAttributeValue<AssemblyInformationalVersionAttribute, string>()}");
     BaseWriter.WriteLine($"//   TargetFramework: {assembly.GetAssemblyMetadataAttributeValue<TargetFrameworkAttribute, string>()}");
     BaseWriter.WriteLine($"//   Configuration: {assembly.GetAssemblyMetadataAttributeValue<AssemblyConfigurationAttribute, string>()}");
+
+    foreach (var (key, value) in assembly.GetAssemblyMetadataAttributes<AssemblyMetadataAttribute, (object?, object?)>(
+      static constructorArguments => (
+        constructorArguments.FirstOrDefault().Value,
+        constructorArguments.Skip(1).FirstOrDefault().Value
+      )
+    )) {
+      BaseWriter.WriteLine($"//   Metadata: {key}={value}");
+    }
   }
 
   private unsafe void WriteReferencedAssemblies()

src/Smdn.Reflection.ReverseGenerating.ListApi.Core/Smdn.Reflection.ReverseGenerating.ListApi/AssemblyExtensions.cs

@@ -19,27 +19,34 @@ public static class AssemblyExtensions {
   // TODO: change assm -> assembly
   public static TValue GetAssemblyMetadataAttributeValue<TAssemblyMetadataAttribute, TValue>(this Assembly assm)
     where TAssemblyMetadataAttribute : Attribute
-    => (TValue)GetAssemblyMetadataAttributeValue<TAssemblyMetadataAttribute>(
+    => (TValue?)GetAssemblyMetadataAttributesCore<TAssemblyMetadataAttribute>(
         assm ?? throw new ArgumentNullException(nameof(assm))
-      )!;
+      )
+      .FirstOrDefault(static d => ROCType.FullNameEquals(typeof(TAssemblyMetadataAttribute), d.AttributeType))
+      ?.ConstructorArguments
+      ?.FirstOrDefault()
+      .Value;
+
+  internal static IEnumerable<TValue?>
+  GetAssemblyMetadataAttributes<TAssemblyMetadataAttribute, TValue>(
+    this Assembly assembly,
+    Func<IList<CustomAttributeTypedArgument>, TValue?> constructorArgumentsConverter
+  ) where TAssemblyMetadataAttribute : Attribute
+    => GetAssemblyMetadataAttributesCore<TAssemblyMetadataAttribute>(
+      assembly ?? throw new ArgumentNullException(nameof(assembly))
+    )
+    .Where(static d => ROCType.FullNameEquals(typeof(TAssemblyMetadataAttribute), d.AttributeType))
+    .Select(attr => constructorArgumentsConverter(attr.ConstructorArguments));
 
-  private static object? GetAssemblyMetadataAttributeValue<TAssemblyMetadataAttribute>(Assembly assm)
+  private static IList<CustomAttributeData> GetAssemblyMetadataAttributesCore<TAssemblyMetadataAttribute>(this Assembly assembly)
     where TAssemblyMetadataAttribute : Attribute
   {
-    IList<System.Reflection.CustomAttributeData> attributesData;
-
     try {
-      attributesData = assm.GetCustomAttributesData();
+      return assembly.GetCustomAttributesData();
     }
     catch (FileNotFoundException ex) { // when (!string.IsNullOrEmpty(ex.FusionLog))
       // in the case of reference assembly cannot be loaded
-      throw AssemblyFileNotFoundException.Create(assm.GetName(), ex);
+      throw AssemblyFileNotFoundException.Create(assembly.GetName(), ex);
     }
-
-    return attributesData
-      .FirstOrDefault(static d => ROCType.FullNameEquals(typeof(TAssemblyMetadataAttribute), d.AttributeType))
-      ?.ConstructorArguments
-      ?.FirstOrDefault()
-      .Value;
   }
 }

tests/Smdn.Reflection.ReverseGenerating.ListApi.Core/Smdn.Reflection.ReverseGenerating.ListApi/ApiListWriter.cs

@@ -379,6 +379,8 @@ private static System.Collections.IEnumerable YieldTestCases_WriteHeader_WriteAs
 [assembly: System.Reflection.AssemblyInformationalVersionAttribute(""1.2.3-InformationalVersion"")]
 [assembly: System.Reflection.AssemblyConfigurationAttribute(""Configuration"")]
 [assembly: System.Runtime.Versioning.TargetFrameworkAttribute(""TargetFramework"")]
+[assembly: System.Reflection.AssemblyMetadataAttribute(""RepositoryUrl"", ""https://example.com/nonexistent.git"")]
+[assembly: System.Reflection.AssemblyMetadataAttribute(""RepositoryBranch"", ""main"")]
 ",
       "TestCase1Assembly",
       new[] {
@@ -391,7 +393,9 @@ private static System.Collections.IEnumerable YieldTestCases_WriteHeader_WriteAs
 //   AssemblyVersion: 1.2.3.4
 //   InformationalVersion: 1.2.3-InformationalVersion
 //   TargetFramework: TargetFramework
-//   Configuration: Configuration"
+//   Configuration: Configuration
+//   Metadata: RepositoryUrl=https://example.com/nonexistent.git
+//   Metadata: RepositoryBranch=main"
     };
 
     yield return new object[] {