[BUG]: Tagged Unions

[JaciBrunning]

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Problem description

Given the following struct:

template<typename T>
struct CGrappleResult {
  enum class Tag {
    Ok,
    Err,
  };

  struct Ok_Body {
    T _0;
  };

  struct Err_Body {
    CGrappleError _0;
  };

  Tag tag;
  union {
    Ok_Body ok;
    Err_Body err;
  };
};

The generator fails to generate the class with "ValueError: not sure how to handle 'union <<id=1>>`

The expected behaviour is to treat it as a tagged union, exposing both variants as class fields and leaving it to the user to discriminate them.

Operating System

Windows

Installed Python Packages

No response

Reproducible example code

No response

[virtuald]

This hasn't come up very much, so I'm inclined to not handle it automatically. You'll need to write your own binding code.

std::variant is a more modern way of implementing this pattern. If you use std::variant instead as your result, that should be supported out of the box.

[virtuald]

I don't think we'll support this.