Module macros

Macros

• bail
  Return early with an error, in any type that can be converted from an anyhow::Error.
• ensure
  Util macro for generating error when condition check failed.
• ensure_eq
  Util macro to generate error when the two arguments are not equal.
• must_match
  Match an enum variant and return the internal value.
• try_match_expand
  Try to match an enum variant and return the internal value.