flatc generates invalid rust code [Rust, rustc 1.68.0, linux, master]

[swz-git]

Running flatc (master or 23.3.3) on rlbot.fbs generates invalid rust code:

error[E0599]: no method named `message_type` found for reference `&GameMessageWrapper<'a>` in the current scope
     --> src/rlbot_generated.rs:12128:13
      |
12128 |     if self.message_type() == GameMessage::PlayerStatEvent {
      |             ^^^^^^^^^^^^ help: there is a method with a similar name: `Message_type`

error[E0599]: no method named `message_type` found for reference `&GameMessageWrapper<'a>` in the current scope
     --> src/rlbot_generated.rs:12143:13
      |
12143 |     if self.message_type() == GameMessage::PlayerSpectate {
      |             ^^^^^^^^^^^^ help: there is a method with a similar name: `Message_type`

error[E0599]: no method named `message_type` found for reference `&GameMessageWrapper<'a>` in the current scope
     --> src/rlbot_generated.rs:12158:13
      |
12158 |     if self.message_type() == GameMessage::PlayerInputChange {
      |             ^^^^^^^^^^^^ help: there is a method with a similar name: `Message_type`

error[E0599]: no method named `message_type` found for reference `&GameMessageWrapper<'_>` in the current scope
     --> src/rlbot_generated.rs:12237:18
      |
12237 |       match self.message_type() {
      |                  ^^^^^^^^^^^^ help: there is a method with a similar name: `Message_type`

[dbaileychess]

@CasperN can you take a look?

[cloneable]

Please also take a look at #7782 for a similar issue.

[TethysSvensson]

I am pretty sure that's actually the same issue as #7782. It's at least very related, since the core issue is the same (the [[stuff]]_type method names for unions are not generated in the same way in different parts of the codegen).

Since that issue has been open for more than 3 months now with no response, I am not sure when it will be prioritized. If this is a problem for you, I would suggest you switch to planus instead for your rust code.

[sssooonnnggg]

Hi all, I create a PR which will fix this issue, it seems that it's because rust namer hadn't dealt with case conversion with union type field