Adjust based on review feedback

csharp/generate_protos.sh

@@ -44,7 +44,7 @@ $PROTOC -Isrc --csharp_out=csharp/src/Google.Protobuf \
 # Note that this deliberately does *not* include old_extensions1.proto
 # and old_extensions2.proto, which are generated with an older version
 # of protoc.
-$PROTOC -Isrc -Icsharp/protos -Icsharp/protos/extensions \
+$PROTOC -Isrc -Icsharp/protos \
     --csharp_out=csharp/src/Google.Protobuf.Test.TestProtos \
     --descriptor_set_out=csharp/src/Google.Protobuf.Test/testprotos.pb \
     --include_source_info \
@@ -58,9 +58,9 @@ $PROTOC -Isrc -Icsharp/protos -Icsharp/protos/extensions \
     unittest.proto \
     unittest_import.proto \
     unittest_import_public.proto \
-    extensions_a.proto \
-    extensions_b.proto \
-    extensions_c.proto \
+    extensions_issue6936_a.proto \
+    extensions_issue6936_b.proto \
+    extensions_issue6936_c.proto \
     google/protobuf/unittest_well_known_types.proto \
     google/protobuf/test_messages_proto3.proto \
     google/protobuf/test_messages_proto2.proto

csharp/protos/extensions_issue6936_a.proto

@@ -0,0 +1,15 @@
+syntax = "proto3";
+
+package unittest_issues;
+
+option csharp_namespace = "UnitTest.Issues.TestProtos";
+
+// This file is used as part of a unit test for issue 6936
+// We don't need to use it, we just have to import it in both 
+// "extensions_issue6936_b.proto" and "extensions_issue6936_c.proto"
+
+import "google/protobuf/descriptor.proto";
+
+extend google.protobuf.MessageOptions {
+    string opt = 50000;
+}

csharp/protos/extensions_issue6936_b.proto

@@ -0,0 +1,14 @@
+syntax = "proto3";
+
+import "extensions_issue6936_a.proto";
+
+package unittest_issues;
+
+option csharp_namespace = "UnitTest.Issues.TestProtos";
+
+// This file is used as part of a unit test for issue 6936
+// We don't need to use it, we just have to import it in "extensions_issue6936_c.proto"
+
+message Foo {
+    option (opt) = "foo";
+}

csharp/protos/extensions_issue6936_c.proto

@@ -0,0 +1,16 @@
+syntax = "proto3";
+
+import "extensions_issue6936_a.proto";
+import "extensions_issue6936_b.proto";
+
+package unittest_issues;
+
+option csharp_namespace = "UnitTest.Issues.TestProtos";
+
+// This file is used as part of a unit test for issue 6936
+// We don't need to use it, we just have to load it at runtime
+
+message Bar {
+    option (opt) = "bar";
+    Foo foo = 1;
+}

csharp/src/Google.Protobuf.Test.TestProtos/ExtensionsA.cs → csharp/src/Google.Protobuf.Test.TestProtos/ExtensionsIssue6936A.cs

@@ -1,6 +1,6 @@
 // <auto-generated>
 //     Generated by the protocol buffer compiler.  DO NOT EDIT!
-//     source: extensions_a.proto
+//     source: extensions_issue6936_a.proto
 // </auto-generated>
 #pragma warning disable 1591, 0612, 3021
 #region Designer generated code
@@ -9,34 +9,34 @@
 using pbc = global::Google.Protobuf.Collections;
 using pbr = global::Google.Protobuf.Reflection;
 using scg = global::System.Collections.Generic;
-namespace Google.Protobuf.TestProtos.Extensions {
+namespace UnitTest.Issues.TestProtos {
 
-  /// <summary>Holder for reflection information generated from extensions_a.proto</summary>
-  public static partial class ExtensionsAReflection {
+  /// <summary>Holder for reflection information generated from extensions_issue6936_a.proto</summary>
+  public static partial class ExtensionsIssue6936AReflection {
 
     #region Descriptor
-    /// <summary>File descriptor for extensions_a.proto</summary>
+    /// <summary>File descriptor for extensions_issue6936_a.proto</summary>
     public static pbr::FileDescriptor Descriptor {
       get { return descriptor; }
     }
     private static pbr::FileDescriptor descriptor;
 
-    static ExtensionsAReflection() {
+    static ExtensionsIssue6936AReflection() {
       byte[] descriptorData = global::System.Convert.FromBase64String(
           string.Concat(
-            "ChJleHRlbnNpb25zX2EucHJvdG8aIGdvb2dsZS9wcm90b2J1Zi9kZXNjcmlw",
-            "dG9yLnByb3RvOi4KA29wdBIfLmdvb2dsZS5wcm90b2J1Zi5NZXNzYWdlT3B0",
-            "aW9ucxjQhgMgASgJQiiqAiVHb29nbGUuUHJvdG9idWYuVGVzdFByb3Rvcy5F",
-            "eHRlbnNpb25zYgZwcm90bzM="));
+            "ChxleHRlbnNpb25zX2lzc3VlNjkzNl9hLnByb3RvEg91bml0dGVzdF9pc3N1",
+            "ZXMaIGdvb2dsZS9wcm90b2J1Zi9kZXNjcmlwdG9yLnByb3RvOi4KA29wdBIf",
+            "Lmdvb2dsZS5wcm90b2J1Zi5NZXNzYWdlT3B0aW9ucxjQhgMgASgJQh2qAhpV",
+            "bml0VGVzdC5Jc3N1ZXMuVGVzdFByb3Rvc2IGcHJvdG8z"));
       descriptor = pbr::FileDescriptor.FromGeneratedCode(descriptorData,
           new pbr::FileDescriptor[] { global::Google.Protobuf.Reflection.DescriptorReflection.Descriptor, },
-          new pbr::GeneratedClrTypeInfo(null, new pb::Extension[] { ExtensionsAExtensions.Opt }, null));
+          new pbr::GeneratedClrTypeInfo(null, new pb::Extension[] { ExtensionsIssue6936AExtensions.Opt }, null));
     }
     #endregion
 
   }
-  /// <summary>Holder for extension identifiers generated from the top level of extensions_a.proto</summary>
-  public static partial class ExtensionsAExtensions {
+  /// <summary>Holder for extension identifiers generated from the top level of extensions_issue6936_a.proto</summary>
+  public static partial class ExtensionsIssue6936AExtensions {
     public static readonly pb::Extension<global::Google.Protobuf.Reflection.MessageOptions, string> Opt =
       new pb::Extension<global::Google.Protobuf.Reflection.MessageOptions, string>(50000, pb::FieldCodec.ForString(400002, ""));
   }

csharp/src/Google.Protobuf.Test.TestProtos/ExtensionsB.cs → csharp/src/Google.Protobuf.Test.TestProtos/ExtensionsIssue6936B.cs

@@ -1,6 +1,6 @@
 // <auto-generated>
 //     Generated by the protocol buffer compiler.  DO NOT EDIT!
-//     source: extensions_b.proto
+//     source: extensions_issue6936_b.proto
 // </auto-generated>
 #pragma warning disable 1591, 0612, 3021
 #region Designer generated code
@@ -9,28 +9,28 @@
 using pbc = global::Google.Protobuf.Collections;
 using pbr = global::Google.Protobuf.Reflection;
 using scg = global::System.Collections.Generic;
-namespace Google.Protobuf.TestProtos.Extensions {
+namespace UnitTest.Issues.TestProtos {
 
-  /// <summary>Holder for reflection information generated from extensions_b.proto</summary>
-  public static partial class ExtensionsBReflection {
+  /// <summary>Holder for reflection information generated from extensions_issue6936_b.proto</summary>
+  public static partial class ExtensionsIssue6936BReflection {
 
     #region Descriptor
-    /// <summary>File descriptor for extensions_b.proto</summary>
+    /// <summary>File descriptor for extensions_issue6936_b.proto</summary>
     public static pbr::FileDescriptor Descriptor {
       get { return descriptor; }
     }
     private static pbr::FileDescriptor descriptor;
 
-    static ExtensionsBReflection() {
+    static ExtensionsIssue6936BReflection() {
       byte[] descriptorData = global::System.Convert.FromBase64String(
           string.Concat(
-            "ChJleHRlbnNpb25zX2IucHJvdG8aEmV4dGVuc2lvbnNfYS5wcm90byIOCgNG",
-            "b286B4K1GANiYXJCKKoCJUdvb2dsZS5Qcm90b2J1Zi5UZXN0UHJvdG9zLkV4",
-            "dGVuc2lvbnNiBnByb3RvMw=="));
+            "ChxleHRlbnNpb25zX2lzc3VlNjkzNl9iLnByb3RvEg91bml0dGVzdF9pc3N1",
+            "ZXMaHGV4dGVuc2lvbnNfaXNzdWU2OTM2X2EucHJvdG8iDgoDRm9vOgeCtRgD",
+            "Zm9vQh2qAhpVbml0VGVzdC5Jc3N1ZXMuVGVzdFByb3Rvc2IGcHJvdG8z"));
       descriptor = pbr::FileDescriptor.FromGeneratedCode(descriptorData,
-          new pbr::FileDescriptor[] { global::Google.Protobuf.TestProtos.Extensions.ExtensionsAReflection.Descriptor, },
+          new pbr::FileDescriptor[] { global::UnitTest.Issues.TestProtos.ExtensionsIssue6936AReflection.Descriptor, },
           new pbr::GeneratedClrTypeInfo(null, null, new pbr::GeneratedClrTypeInfo[] {
-            new pbr::GeneratedClrTypeInfo(typeof(global::Google.Protobuf.TestProtos.Extensions.Foo), global::Google.Protobuf.TestProtos.Extensions.Foo.Parser, null, null, null, null, null)
+            new pbr::GeneratedClrTypeInfo(typeof(global::UnitTest.Issues.TestProtos.Foo), global::UnitTest.Issues.TestProtos.Foo.Parser, null, null, null, null, null)
           }));
     }
     #endregion
@@ -45,7 +45,7 @@ public sealed partial class Foo : pb::IMessage<Foo> {
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
     public static pbr::MessageDescriptor Descriptor {
-      get { return global::Google.Protobuf.TestProtos.Extensions.ExtensionsBReflection.Descriptor.MessageTypes[0]; }
+      get { return global::UnitTest.Issues.TestProtos.ExtensionsIssue6936BReflection.Descriptor.MessageTypes[0]; }
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]

csharp/src/Google.Protobuf.Test.TestProtos/ExtensionsC.cs → csharp/src/Google.Protobuf.Test.TestProtos/ExtensionsIssue6936C.cs

@@ -1,6 +1,6 @@
 // <auto-generated>
 //     Generated by the protocol buffer compiler.  DO NOT EDIT!
-//     source: extensions_c.proto
+//     source: extensions_issue6936_c.proto
 // </auto-generated>
 #pragma warning disable 1591, 0612, 3021
 #region Designer generated code
@@ -9,29 +9,30 @@
 using pbc = global::Google.Protobuf.Collections;
 using pbr = global::Google.Protobuf.Reflection;
 using scg = global::System.Collections.Generic;
-namespace Google.Protobuf.TestProtos.Extensions {
+namespace UnitTest.Issues.TestProtos {
 
-  /// <summary>Holder for reflection information generated from extensions_c.proto</summary>
-  public static partial class ExtensionsCReflection {
+  /// <summary>Holder for reflection information generated from extensions_issue6936_c.proto</summary>
+  public static partial class ExtensionsIssue6936CReflection {
 
     #region Descriptor
-    /// <summary>File descriptor for extensions_c.proto</summary>
+    /// <summary>File descriptor for extensions_issue6936_c.proto</summary>
     public static pbr::FileDescriptor Descriptor {
       get { return descriptor; }
     }
     private static pbr::FileDescriptor descriptor;
 
-    static ExtensionsCReflection() {
+    static ExtensionsIssue6936CReflection() {
       byte[] descriptorData = global::System.Convert.FromBase64String(
           string.Concat(
-            "ChJleHRlbnNpb25zX2MucHJvdG8aEmV4dGVuc2lvbnNfYS5wcm90bxoSZXh0",
-            "ZW5zaW9uc19iLnByb3RvIiEKA0JhchIRCgNmb28YASABKAsyBC5Gb286B4K1",
-            "GANmb29CKKoCJUdvb2dsZS5Qcm90b2J1Zi5UZXN0UHJvdG9zLkV4dGVuc2lv",
-            "bnNiBnByb3RvMw=="));
+            "ChxleHRlbnNpb25zX2lzc3VlNjkzNl9jLnByb3RvEg91bml0dGVzdF9pc3N1",
+            "ZXMaHGV4dGVuc2lvbnNfaXNzdWU2OTM2X2EucHJvdG8aHGV4dGVuc2lvbnNf",
+            "aXNzdWU2OTM2X2IucHJvdG8iMQoDQmFyEiEKA2ZvbxgBIAEoCzIULnVuaXR0",
+            "ZXN0X2lzc3Vlcy5Gb286B4K1GANiYXJCHaoCGlVuaXRUZXN0Lklzc3Vlcy5U",
+            "ZXN0UHJvdG9zYgZwcm90bzM="));
       descriptor = pbr::FileDescriptor.FromGeneratedCode(descriptorData,
-          new pbr::FileDescriptor[] { global::Google.Protobuf.TestProtos.Extensions.ExtensionsAReflection.Descriptor, global::Google.Protobuf.TestProtos.Extensions.ExtensionsBReflection.Descriptor, },
+          new pbr::FileDescriptor[] { global::UnitTest.Issues.TestProtos.ExtensionsIssue6936AReflection.Descriptor, global::UnitTest.Issues.TestProtos.ExtensionsIssue6936BReflection.Descriptor, },
           new pbr::GeneratedClrTypeInfo(null, null, new pbr::GeneratedClrTypeInfo[] {
-            new pbr::GeneratedClrTypeInfo(typeof(global::Google.Protobuf.TestProtos.Extensions.Bar), global::Google.Protobuf.TestProtos.Extensions.Bar.Parser, new[]{ "Foo" }, null, null, null, null)
+            new pbr::GeneratedClrTypeInfo(typeof(global::UnitTest.Issues.TestProtos.Bar), global::UnitTest.Issues.TestProtos.Bar.Parser, new[]{ "Foo" }, null, null, null, null)
           }));
     }
     #endregion
@@ -46,7 +47,7 @@ public sealed partial class Bar : pb::IMessage<Bar> {
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
     public static pbr::MessageDescriptor Descriptor {
-      get { return global::Google.Protobuf.TestProtos.Extensions.ExtensionsCReflection.Descriptor.MessageTypes[0]; }
+      get { return global::UnitTest.Issues.TestProtos.ExtensionsIssue6936CReflection.Descriptor.MessageTypes[0]; }
     }
 
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
@@ -74,9 +75,9 @@ public sealed partial class Bar : pb::IMessage<Bar> {
 
     /// <summary>Field number for the "foo" field.</summary>
     public const int FooFieldNumber = 1;
-    private global::Google.Protobuf.TestProtos.Extensions.Foo foo_;
+    private global::UnitTest.Issues.TestProtos.Foo foo_;
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
-    public global::Google.Protobuf.TestProtos.Extensions.Foo Foo {
+    public global::UnitTest.Issues.TestProtos.Foo Foo {
       get { return foo_; }
       set {
         foo_ = value;
@@ -145,7 +146,7 @@ public sealed partial class Bar : pb::IMessage<Bar> {
       }
       if (other.foo_ != null) {
         if (foo_ == null) {
-          Foo = new global::Google.Protobuf.TestProtos.Extensions.Foo();
+          Foo = new global::UnitTest.Issues.TestProtos.Foo();
         }
         Foo.MergeFrom(other.Foo);
       }
@@ -162,7 +163,7 @@ public sealed partial class Bar : pb::IMessage<Bar> {
             break;
           case 10: {
             if (foo_ == null) {
-              Foo = new global::Google.Protobuf.TestProtos.Extensions.Foo();
+              Foo = new global::UnitTest.Issues.TestProtos.Foo();
             }
             input.ReadMessage(Foo);
             break;

csharp/src/Google.Protobuf.Test/Reflection/CustomOptionsTest.cs

@@ -42,7 +42,6 @@
 using static UnitTest.Issues.TestProtos.UnittestCustomOptionsProto3Extensions;
 using static UnitTest.Issues.TestProtos.DummyMessageContainingEnum.Types;
 using Google.Protobuf.TestProtos;
-using Google.Protobuf.TestProtos.Extensions;
 
 #pragma warning disable CS0618
 
@@ -197,11 +196,11 @@ public void NoOptions()
         [Test]
         public void MultipleImportOfSameFileWithExtension()
         {
-            var descriptor = ExtensionsCReflection.Descriptor;
+            var descriptor = ExtensionsIssue6936CReflection.Descriptor;
             var foo = Foo.Descriptor;
             var bar = Bar.Descriptor;
-            AssertOption("bar", foo.CustomOptions.TryGetString, ExtensionsAExtensions.Opt, foo.GetOption);
-            AssertOption("foo", bar.CustomOptions.TryGetString, ExtensionsAExtensions.Opt, bar.GetOption);
+            AssertOption("foo", foo.CustomOptions.TryGetString, ExtensionsIssue6936AExtensions.Opt, foo.GetOption);
+            AssertOption("bar", bar.CustomOptions.TryGetString, ExtensionsIssue6936AExtensions.Opt, bar.GetOption);
         }
 
         private void AssertOption<T, D>(T expected, OptionFetcher<T> fetcher, Extension<D, T> extension, Func<Extension<D, T>, T> descriptorOptionFetcher) where D : IExtendableMessage<D>