let fpp_term term pp_data fmt t =
match t with
| Tconst c -> constant fmt c
| Tvar v -> pp_var fmt v
| Tdata d -> pp_data fmt d
| Tapp (id, []) -> pp_print_string fmt id
| Tapp ("ite",[c;a;b]) | Tif (c,a,b) ->
fprintf fmt "(@[<v 0>if %a@ then %a@ else %a@])"
term c term a term b
| Tapp ("neg_int",[a]) ->
fprintf fmt "@[<hov 1> (-%a)@]" term a
| Tapp ("add_int", ts) ->
let xs = collect_assoc "add_int" [] ts in
pp_flow fmt "0" "+" term xs
| Tapp ("sub_int", [a;b]) ->
fprintf fmt "@[<hov 1>(%a@ -%a)@]" term a term b
| Tapp ("mul_int", ts) ->
let xs = collect_assoc "mul_int" [] ts in
pp_flow fmt "1" "*" term xs
| Tapp (id, t::ts) ->
fprintf fmt "@[<hov 2>(%s@, %a" id term t ;
List.iter (fun t -> fprintf fmt " @, %a" term t) ts ;
fprintf fmt ")@]"
| Tlet (x,v,t) ->
fprintf fmt "(@[<v 0>let %a@ := %a@ in %a@])"
pp_var x term v term t