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yap-6.3/Logtalk/examples/hooks/hook.lgt

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:- object(hook).
:- info([
version is 1.0,
author is 'Paulo Moura',
date is 2006/01/29,
comment is 'Example of an object defining compiler hook predicates.']).
:- public(hook/2).
:- mode(hook(@nonvar, -list), zero_or_one).
:- info(hook/2, [
comment is 'Compiler hook predicate.',
arguments is ['Term'-'Source file term', 'Terms'-'Resulting list of terms']]).
hook((:- info(Original)), [(:- info(New))]) :-
expand_author(Original, New).
expand_author([], []).
expand_author([Info| Infos], [Info2| Infos2]) :-
( Info = (author is Abbreviation) ->
author(Abbreviation, FullName),
Info2 = (author is FullName)
; Info = Info2
),
expand_author(Infos, Infos2).
author(pm, 'Paulo Moura, pmoura@logtalk.org').
:- end_object.