Slothrop/conjectures.ml at master · iwehrman/Slothrop · GitHub

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open Print
open Debug
open Rewriting

let true_s =  "**** CONJECTURE: TRUE ****"
let false_s = "**** CONJECTURE: FALSE ***"
let stars_s = "**************************"

let decide_conjecture dp (b,(s,t)) =
  let s' = normalize dp s in
  let t' = normalize dp t in
    if s' = t' then
      begin
        if b then
          info true_s
        else
          info false_s;
        info ((string_of_rewrite s s') ^ " = " ^
                         (string_of_rewrite_inv t t'));
      end
    else
      begin
        if b then
          info false_s
        else
          info true_s;
        info ((string_of_rewrite s s') ^ " != " ^
                         (string_of_rewrite_inv t t'));
      end;
    info stars_s
;;

let rec semidecide_conjectures rules = function
    [] -> []
  | ((b,(s,t)) as conj)::cs ->
      let s' = normalize rules s in
      let t' = normalize rules t in
        if s' = t' then
          begin
            if b then
              info true_s
            else
              info false_s;
            info ((string_of_rewrite s s') ^ " = " ^
                             (string_of_rewrite_inv t t')) ;
            info stars_s;
            semidecide_conjectures rules cs
          end
        else
          conj::(semidecide_conjectures rules cs)
;;