Add native type setters for Timestamp and Duration in Ruby

[jbolinger]

Resolves #3121 by adding additional setters for fields of type Google::Protobuf::Timestamp and Google::Protobuf::Duration.

This allows a message with a Timestamp field to be set via:

my_message.timestamp = Time.at(1)
my_message.timestamp
# => <Google::Protobuf::Timestamp: seconds: 1, nanos: 0>

Similarly, for Duration fields:

MyMessage.new(duration: 1.1)
# => MyMessage: duration: <Google::Protobuf::Duration: seconds: 1, nanos: 100000000>>

[TeBoring]

upb provides upb_msgdef_wellknowntype. You don't need strcmp here.

[jbolinger]

Hmm... I couldn't find too many usages of that method. How can I get the upb_msgdef from the type_class in order to use it?

[TeBoring]

ok.. seems you cannot get msgdef from type_class

[TeBoring]

Please sync

[TeBoring]

Is there native types for duration in ruby?

[jbolinger]

@TeBoring I've sync'd this with master.

[TeBoring]

It needs to be synced again.

[jbolinger]

@TeBoring sync'd.

[jbolinger]

@TeBoring any updates on this?