foliojs/restructure

Assertions

timkurvers opened this issue · 2 comments

timkurvers commented

Would it be convenient to have some sort of assertion type?

new r.Struct(
  version: new r.Assert(uint8, 3, 'Only version 3.x is supported')
)

Or should that be handled in userland for structs using the postProcess hook?

devongovett commented

If you use versioned structs you'll get an error for unsupported versions.

timkurvers commented

Ah yes, of course! What about verifying a signature?

GIF = new r.Struct(
  signature: new r.Assert(new r.String(3), 'GIF')
  # ...
)