gistfile1.txt

symbol(1,"the").
symbol(2,"quick").
symbol(3,"brown").
symbol(4,"fox").
symbol(5,"jumped").
symbol(6,"over").
symbol(7,"the").
symbol(8,"lazy").
symbol(9,"dog").

list(10).
listindex(10,0,1).
listindex(10,1,2).
listindex(10,2,3).

list(11).
listindex(11,0,4).
listindex(11,1,5).
listindex(11,2,6).
listindex(11,3,7).
listindex(11,4,8).
listindex(11,5,9).

list(12).
listindex(12,0,10).
listindex(12,1,13).
listindex(12,2,11).
listindex(12,3,11).

list(13).

root(12).

listcount(?id, #max(?index + 1)) :- list(?id), listindex(?id, ?index, ?subid).
listcount(?id, 0) :- list(?id), ~listindex(?id, ?index, ?subid).

obj(?id) :- symbol(?id, ?str).
obj(?id) :- list(?id).

% toposorting; did not end up needing it
% dist(1, ?id, ?subid) :- listindex(?id, ?index, ?subid).
% dist(?n + 1, ?id, ?subsubid) :- listindex(?id, ?index, ?subid), dist(?n, ?subid, ?subsubid).
% toposort(0, ?x) :- obj(?x), ~dist(?n, ?x, ?y).
% toposort(#max(?n), ?x) :- dist(?n, ?x, ?y).

tostr(?id,?str) :- symbol(?id, ?str).
tostr(?id,CONCAT("(",CONCAT(?str,")"))) :- listcount(?id, ?n), cat(?id, ?n, ?str).
tostr(?id,"()") :- listcount(?id, 0).

cat(?id, 1, ?a) :-
    listindex(?id,0,?subid),
    tostr(?subid, ?a).
cat(?id, ?n + 1, CONCAT(?a, CONCAT(" ", ?b))) :-
    cat(?id, ?n, ?a),
    listindex(?id,?n,?subid),
    tostr(?subid, ?b).

result(?str) :- root(?id), tostr(?id, ?str).

@export result :- csv{resource = ""}.