Module: ppl/ppl Branch: master Commit: 17d622b60b0269fe99332f632ea3695d2ea5bae2 URL: http://www.cs.unipr.it/git/gitweb.cgi?p=ppl/ppl.git;a=commit;h=17d622b60b026...

Author: Roberto Bagnara bagnara@cs.unipr.it Date: Wed Dec 11 07:37:11 2013 +0100

Added Prolog_put_nil() and Prolog_get_nil().

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interfaces/Prolog/SWI/swi_cfli.hh | 19 +++++++++++++++++++ 1 files changed, 19 insertions(+), 0 deletions(-)

diff --git a/interfaces/Prolog/SWI/swi_cfli.hh b/interfaces/Prolog/SWI/swi_cfli.hh index 4fe3071..2203a41 100644 --- a/interfaces/Prolog/SWI/swi_cfli.hh +++ b/interfaces/Prolog/SWI/swi_cfli.hh @@ -145,6 +145,16 @@ Prolog_put_atom(Prolog_term_ref t, Prolog_atom a) { }

/*! + Assign to \p t the list terminator <CODE>[]</CODE> (which needs not + be an atom). +*/ +inline int +Prolog_put_nil(Prolog_term_ref t) { + PL_put_nil(to_term_t(t)); + return 1; +} + +/*! Assign to \p t a term representing the address contained in \p p. */ inline int @@ -354,6 +364,15 @@ Prolog_get_arg(int i, Prolog_term_ref t, Prolog_term_ref a) { }

/*! + Succeeds if and only if \p t represents the list terminator <CODE>[]</CODE> + (which needs not be an atom). +*/ +inline int +Prolog_get_nil(Prolog_term_ref t) { + return PL_get_nil(to_term_t(t)); +} + +/*! If \p c is a Prolog cons (list constructor), assign its head and tail to \p h and \p t, respectively. The behavior is undefined if \p c is not a Prolog cons.