Multiple help?

[aviramha]

Hi!
I'm trying to use miette and I have a use case where an Enum implements Diagnostic (using the derive) and we provide it with help attributes to the variants. We also want a "general" help that is always displayed when there's an error.
I tried wrapping the error with another struct that has help attribute of it's own, but this doesn't seem to work.
Is it possible to achieve my plan or any recommendation on how to do so?
I thought about implementing a ReportHandler but this seems like an overkill..

[zkat]

If you're willing to do a wrapper, you could use something like this, if I understand what you're asking for:

struct WrapperErr(MyErrEnum);

impl trait miette::Diagnostic for WrapperErr {
  fn help<'a>(&'a self) -> Option<Box<dyn Display + 'a>> {
    let extra_help = "For more help please check out our documentation at https://github.com/example/example";
    if let Some(help) = self.0.help() {
      Some(Box::new(format!("{help}\n\n{extra_help}")))
    } else {
      Some(Box::new(extra_help))
    }
  }
  fn code<'a>(&'a self) -> Option<Box<dyn Display + 'a>> {
    self.0.code()
  }
  fn severity(&self) -> Option<miette::Severity> {
    self.0.severity()
  }
  // ... etc, for all other protocol methods.
}