Interface ReversibleTranslationTable

All Superinterfaces:
TranslationTable
All Known Implementing Classes:
AbstractReversibleTranslationTable, SimpleReversibleTranslationTable

A translation table that can also translate from the target to source alphabet.

I guess this is encapsulates an invertible function, and the untranslate method is the inverse operation to translate.

It is assumed that untranslate(translate(x)) = x for all x in the source alphabet, and that translate(untranslate(y)) = y for all y in the target alphabet. Note, one interesting sub-set of reversible transforms are of the form translate(x) = untranslate(x), and represent 'mirror image' transformations.

Author:
Matthew Pocock
  • Method Details

    • untranslate

      Translate a single symbol from target alphabet to the source alphabet.
      Parameters:
      sym - the Symbol to translate (member of target alphabet)
      Returns:
      the translated version of sym (member of source alphabet)
      Throws:
      IllegalSymbolException - if sym is not a member of the target alphabet