+(* Copyright (C) 2004, HELM Team.
+ *
+ * This file is part of HELM, an Hypertextual, Electronic
+ * Library of Mathematics, developed at the Computer Science
+ * Department, University of Bologna, Italy.
+ *
+ * HELM is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * HELM is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with HELM; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston,
+ * MA 02111-1307, USA.
+ *
+ * For details, see the HELM World-Wide-Web page,
+ * http://helm.cs.unibo.it/
+ *)
+
+open Printf
+
+open TacticAst
+
+let pp_term term = CicAstPp.pp_term term
+
+let pp_idents idents = "[" ^ String.concat "; " idents ^ "]"
+
+let pp_reduction_kind = function
+ | `Reduce -> "reduce"
+ | `Simpl -> "simpl"
+ | `Whd -> "whd"
+
+let rec pp_tactic = function
+ | LocatedTactic (loc, tac) -> pp_tactic tac
+ | Absurd -> "absurd"
+ | Apply term -> "apply " ^ pp_term term
+ | Assumption -> "assumption"
+ | Change (t1, t2, where) ->
+ sprintf "change %s with %s%s" (pp_term t1) (pp_term t2)
+ (match where with None -> "" | Some ident -> "in " ^ ident)
+ | Change_pattern (_, _, _) -> assert false (* TODO *)
+ | Contradiction -> "contradiction"
+ | Cut term -> "cut " ^ pp_term term
+ | Decompose (ident, principles) ->
+ sprintf "decompose %s %s" (pp_idents principles) ident
+ | Discriminate ident -> "discriminate " ^ ident
+ | Elim (term, using) ->
+ sprintf "elim " ^ pp_term term ^
+ (match using with None -> "" | Some term -> "using " ^ pp_term term)
+ | ElimType term -> "elim type " ^ pp_term term
+ | Exact term -> "exact " ^ pp_term term
+ | Exists -> "exists"
+ | Fold (kind, term) ->
+ sprintf "fold %s %s" (pp_reduction_kind kind) (pp_term term)
+ | Fourier -> "fourier"
+ | Injection ident -> "injection " ^ ident
+ | Intros (num, idents) ->
+ sprintf "intros%s%s"
+ (match num with None -> "" | Some num -> " " ^ string_of_int num)
+ (match idents with [] -> "" | idents -> pp_idents idents)
+ | Left -> "left"
+ | LetIn (term, ident) -> sprintf "let %s in %s" (pp_term term) ident
+ | Reduce (_, _, _) -> assert false (* TODO *)
+ | Reflexivity -> "reflexivity"
+ | Replace (t1, t2) -> sprintf "replace %s with %s" (pp_term t1) (pp_term t2)
+ | Replace_pattern (_, _) -> assert false (* TODO *)
+ | Rewrite (_, _, _) -> assert false (* TODO *)
+ | Right -> "right"
+ | Ring -> "ring"
+ | Split -> "split"
+ | Symmetry -> "symmetry"
+ | Transitivity term -> "transitivity " ^ pp_term term
+
+let rec pp_tactical = function
+ | LocatedTactical (loc, tac) -> pp_tactical tac
+ | Fail -> "fail"
+ | Do (count, tac) -> sprintf "do %d %s" count (pp_tactical tac)
+ | IdTac -> "id"
+ | Repeat tac -> "repeat " ^ pp_tactical tac
+ | Seq tacs -> pp_tacticals tacs
+ | Tactic tac -> pp_tactic tac
+ | Then (tac, tacs) -> sprintf "%s; [%s]" (pp_tactical tac) (pp_tacticals tacs)
+ | Tries tacs -> sprintf "tries [%s]" (pp_tacticals tacs)
+ | Try tac -> "try " ^ pp_tactical tac
+
+and pp_tacticals tacs = String.concat "; " (List.map pp_tactical tacs)
+