defaultcheck

Overview ¶

The defaultcheck plugin is used to check whether nullable is not used incorrectly. For instance: An error is caused if a nullable field:

• has a default value,
• is an enum which does not start at zero,
• is used for an extension,
• is used for a native proto3 type,
• is used for a repeated native type.

An error is also caused if a field with a default value is used in a message:

• which is a face.
• without getters.

It is enabled by the following extensions:

• nullable

For incorrect usage of nullable with tests see:

github.com/gogo/protobuf/test/nullableconflict