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Ingy döt Net 2023-07-01 11:58:00 -04:00
parent 7387c8f97b
commit cb5bb5e222
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Task/Tokenize-a-string/Logtalk/tokenize-a-string.logtalk Normal file
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:- object(spliting).
:- public(convert/2).
:- mode(convert(+atom, -atom), one).
convert(StringIn, StringOut) :-
atom_chars(StringIn, CharactersIn),
phrase(split(',', Tokens), CharactersIn),
phrase(split('.', Tokens), CharactersOut),
atom_chars(StringOut, CharactersOut).
split(Separator, [t([Character| Characters])| Tokens]) -->
[Character], {Character \== Separator}, split(Separator, [t(Characters)| Tokens]).
split(Separator, [t([])| Tokens]) -->
[Separator], split(Separator, Tokens).
split(_, [t([])]) -->
[].
% the look-ahead in the next rule prevents adding a spurious separator at the end
split(_, []), [Character] -->
[Character].
:- end_object.