First pass at making field access simpler.

This is definitely not ready to ship - I'm "troubled" by the disconnect between a list of fields in declaration order, and a mapping of field accessors by field number/name. Discussion required, but I find that easier when we've got code to look at :)

1 files changed, 15 insertions, 0 deletions

diff --git a/csharp/src/Google.Protobuf.Test/Reflection/DescriptorsTest.cs b/csharp/src/Google.Protobuf.Test/Reflection/DescriptorsTest.cs
index 0aff0a6c..ed4291a4 100644
--- a/csharp/src/Google.Protobuf.Test/Reflection/DescriptorsTest.cs
+++ b/csharp/src/Google.Protobuf.Test/Reflection/DescriptorsTest.cs
@@ -33,6 +33,7 @@
 using System.Linq;
 using Google.Protobuf.TestProtos;
 using NUnit.Framework;
+using UnitTest.Issues.TestProtos;
 
 namespace Google.Protobuf.Reflection
 {
@@ -220,5 +221,19 @@ namespace Google.Protobuf.Reflection
 
             CollectionAssert.AreEquivalent(expectedFields, descriptor.Fields);
         }
+
+        [Test]
+        public void ConstructionWithoutGeneratedCodeInfo()
+        {
+            var data = UnittestIssues.Descriptor.Proto.ToByteArray();
+            var newDescriptor = Google.Protobuf.Reflection.FileDescriptor.InternalBuildGeneratedFileFrom(data, new Reflection.FileDescriptor[] { }, null);
+
+            // We should still be able to get at a field...
+            var messageDescriptor = newDescriptor.FindTypeByName<MessageDescriptor>("ItemField");
+            var fieldDescriptor = messageDescriptor.FindFieldByName("item");
+            // But there shouldn't be an accessor (or a generated type for the message)
+            Assert.IsNull(fieldDescriptor.Accessor);
+            Assert.IsNull(messageDescriptor.GeneratedType);
+        }
     }
 }
\ No newline at end of file