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add library routines for lists.

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Mark Thom
2018-01-30 01:00:46 -07:00
parent 2628e27595
commit b761575f7f
2 changed files with 66 additions and 0 deletions
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65
src/prolog/lib/lists.rs Normal file
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pub static LISTS: &str = "member(X, [X|_]).
member(X, [_|Xs]) :- member(X, Xs).
select(X, [X|Xs], Xs).
select(X, [Y|Xs], [Y|Ys]) :- select(X, Xs, Ys).
append([], R, R).
append([X|L], R, [X|S]) :- append(L, R, S).
once(G) :- G, !.
memberchk(X, Xs) :- member(X, Xs), !.
reverse(Xs, Ys) :- reverse(Xs, [], Ys).
reverse([], Ys, Ys) :- !.
reverse([H|T], Ps, Rs) :-
reverse(T, [H|Ps], Rs).
between(Lower, Upper, Lower) :-
Lower =< Upper.
between(Lower1, Upper, X) :-
Lower1 < Upper,
Lower2 is Lower1 + 1,
between(Lower2, Upper, X).
maplist(_, []).
maplist(Cont1, [E1|E1s]) :-
call(Cont1, E1),
maplist(Cont1, E1s).
maplist(_, [], []).
maplist(Cont2, [E1|E1s], [E2|E2s]) :-
call(Cont2, E1, E2),
maplist(Cont2, E1s, E2s).
maplist(_, [], [], []).
maplist(Cont3, [E1|E1s], [E2|E2s], [E3|E3s]) :-
call(Cont3, E1, E2, E3),
maplist(Cont3, E1s, E2s, E3s).
maplist(_, [], [], [], []).
maplist(Cont, [E1|E1s], [E2|E2s], [E3|E3s], [E4|E4s]) :-
call(Cont, E1, E2, E3, E4),
maplist(Cont, E1s, E2s, E3s, E4s).
maplist(_, [], [], [], [], []).
maplist(Cont, [E1|E1s], [E2|E2s], [E3|E3s], [E4|E4s], [E5|E5s]) :-
call(Cont, E1, E2, E3, E4, E5),
maplist(Cont, E1s, E2s, E3s, E4s, E5s).
maplist(_, [], [], [], [], [], []).
maplist(Cont, [E1|E1s], [E2|E2s], [E3|E3s], [E4|E4s], [E5|E5s], [E6|E6s]) :-
call(Cont, E1, E2, E3, E4, E5, E6),
maplist(Cont, E1s, E2s, E3s, E4s, E5s, E6s).
maplist(_, [], [], [], [], [], [], []).
maplist(Cont, [E1|E1s], [E2|E2s], [E3|E3s], [E4|E4s], [E5|E5s], [E6|E6s], [E7|E7s]) :-
call(Cont, E1, E2, E3, E4, E5, E6, E7),
maplist(Cont, E1s, E2s, E3s, E4s, E5s, E6s, E7s).
maplist(_, [], [], [], [], [], [], [], []).
maplist(Cont, [E1|E1s], [E2|E2s], [E3|E3s], [E4|E4s], [E5|E5s], [E6|E6s], [E7|E7s], [E8|E8s]) :-
call(Cont, E1, E2, E3, E4, E5, E6, E7),
maplist(Cont, E1s, E2s, E3s, E4s, E5s, E6s, E7s, E8s).";

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src/prolog/lib/mod.rs Normal file
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pub mod lists;