• Method Detail

      • doUntranslate

        protected abstract Symbol doUntranslate​(Symbol sym)
                                         throws IllegalSymbolException

        this method is expected to reverse-translate any symbol in the source alphabet. Failure can be indicated by returning a null if, for example, your method only handles AtomicSymbols and you want BasisSymbols to be taken apart. If you are sure the symbol is illegal, you can throw the IllegalSymbolException immediately to bypass further processing.

        As an optimisation, if your method is capable of immediately translating an ambiguity Symbol, just return it and the alternate route of establishing the translation through doing an ambiguity lookup will be avoided.

        Throws:
        IllegalSymbolException
      • doTranslate

        protected abstract Symbol doTranslate​(Symbol sym)
                                       throws IllegalSymbolException

        this method is expected to translate any symbol in the source alphabet. Failure can be indicated by returning a null if, for example, your method only handles AtomicSymbols and you want BasisSymbols to be taken apart. If you are sure the symbol is illegal, you can throw the IllegalSymbolException immediately to bypass further processing.

        As an optimisation, if your method is capable of immediately translating an ambiguity Symbol, just return it and the alternate route of establishing the translation through doing an ambiguity lookup will be avoided.

        Throws:
        IllegalSymbolException
      • translate

        public Symbol translate​(Symbol sym)
                         throws IllegalSymbolException

        Translate a single symbol from source alphabet to the target alphabet.

        Specified by:
        translate in interface TranslationTable
        Parameters:
        sym - the Symbol to translate (member of source alphabet)
        Returns:
        the translated version of sym (member of target alphabet)
        Throws:
        IllegalSymbolException - if sym is not a member of the source alphabet