Pack/Unpack implementation for Any.

We still need the JSON representation, which relies on something like a DescriptorPool to fetch message types from based on the type URL. That will come a bit later.
(The DescriptorPool comment in this commit is just a note which will prove useful if we use DescriptorPool itself.)

1 files changed, 2 insertions, 0 deletions

diff --git a/csharp/src/Google.Protobuf/Reflection/DescriptorPool.cs b/csharp/src/Google.Protobuf/Reflection/DescriptorPool.cs
index 759955e6..99ca4bf3 100644
--- a/csharp/src/Google.Protobuf/Reflection/DescriptorPool.cs
+++ b/csharp/src/Google.Protobuf/Reflection/DescriptorPool.cs
@@ -96,6 +96,8 @@ namespace Google.Protobuf.Reflection
                 return descriptor;
             }
 
+            // dependencies contains direct dependencies and any *public* dependencies
+            // of those dependencies (transitively)... so we don't need to recurse here.
             foreach (FileDescriptor dependency in dependencies)
             {
                 dependency.DescriptorPool.descriptorsByName.TryGetValue(fullName, out result);