tree 74ca1faf23208a0af6732e638c9d676181e91773
parent 9c420a66b73046ec6f1a0db3ed416fb2e362eb65
author Joe Tsai <joetsai@digital-static.net> 1538167147 -0700
committer Joe Tsai <thebrokentoaster@gmail.com> 1538167827 +0000

reflect/prototype: avoid unescaping string defaults

According to google.protobuf.FieldDescriptorProto.default_value documentation:
>>>
For strings, contains the default text contents (not escaped in any way).
For bytes, contains the C escaped value.  All bytes >= 128 are escaped.
<<<

Thus, use the default value ad-verbatim if the kind is a string.
For the bytes kind, we use the text format hack to unescape the string,
since the text format uses the same unescape syntax as C due to its heritage.

Change-Id: I79e6d4d7e8f0d1ebedccecb9424a49384485589d
Reviewed-on: https://go-review.googlesource.com/138515
Reviewed-by: Damien Neil <dneil@google.com>