tree 7d04d167c58760c900c8ab12a179656f2bac7814
parent b4e370ef3a86cd5a0f62874fe112e24e855be711
author Joe Tsai <joetsai@digital-static.net> 1535348897 -0700
committer Joe Tsai <thebrokentoaster@gmail.com> 1536182753 +0000

reflect/prototype: add NewFileFromDescriptorProto constructor

Implement NewFileFromDescriptorProto, which constructs a
protoreflect.FileDescriptor from a provided descriptor.FileDescriptorProto.

Some other minor changes:
* Allow calling Find and Range methods on nil *protoregistry.Files to match
the behavior of maps where index operations are permitted, but store panics.
* Switch protoregistry test to be protoregistry_test to avoid cyclic dependency.

Change-Id: I5536901ef5096014a3421e63bc4a9dfcad335ea4
Reviewed-on: https://go-review.googlesource.com/132455
Reviewed-by: Damien Neil <dneil@google.com>