--- /dev/null
+(* 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/
+ *)
+
+(* $Id$ *)
+
+type direction = [ `LeftToRight | `RightToLeft ]
+
+type loc = Token.flocation
+
+type ('term, 'lazy_term, 'ident) pattern =
+ 'lazy_term option * ('ident * 'term) list * 'term option
+
+type ('term, 'ident) type_spec =
+ | Ident of 'ident
+ | Type of UriManager.uri * int
+
+type 'lazy_term reduction =
+ [ `Normalize
+ | `Reduce
+ | `Simpl
+ | `Unfold of 'lazy_term option
+ | `Whd ]
+
+type ('term, 'lazy_term, 'reduction, 'ident) tactic =
+ | Absurd of loc * 'term
+ | Apply of loc * 'term
+ | Assumption of loc
+ | Auto of loc * int option * int option * string option * string option
+ (* depth, width, paramodulation, full *) (* ALB *)
+ | Change of loc * ('term, 'lazy_term, 'ident) pattern * 'lazy_term
+ | Clear of loc * 'ident
+ | ClearBody of loc * 'ident
+ | Compare of loc * 'term
+ | Constructor of loc * int
+ | Contradiction of loc
+ | Cut of loc * 'ident option * 'term
+ | DecideEquality of loc
+ | Decompose of loc * ('term, 'ident) type_spec list * 'ident * 'ident list
+ | Discriminate of loc * 'term
+ | Elim of loc * 'term * 'term option * int option * 'ident list
+ | ElimType of loc * 'term * 'term option * int option * 'ident list
+ | Exact of loc * 'term
+ | Exists of loc
+ | Fail of loc
+ | Fold of loc * 'reduction * 'lazy_term * ('term, 'lazy_term, 'ident) pattern
+ | Fourier of loc
+ | FwdSimpl of loc * string * 'ident list
+ | Generalize of loc * ('term, 'lazy_term, 'ident) pattern * 'ident option
+ | Goal of loc * int (* change current goal, argument is goal number 1-based *)
+ | IdTac of loc
+ | Injection of loc * 'term
+ | Intros of loc * int option * 'ident list
+ | Inversion of loc * 'term
+ | LApply of loc * int option * 'term list * 'term * 'ident option
+ | Left of loc
+ | LetIn of loc * 'term * 'ident
+ | Reduce of loc * 'reduction * ('term, 'lazy_term, 'ident) pattern
+ | Reflexivity of loc
+ | Replace of loc * ('term, 'lazy_term, 'ident) pattern * 'lazy_term
+ | Rewrite of loc * direction * 'term *
+ ('term, 'lazy_term, 'ident) pattern
+ | Right of loc
+ | Ring of loc
+ | Split of loc
+ | Symmetry of loc
+ | Transitivity of loc * 'term
+
+type search_kind = [ `Locate | `Hint | `Match | `Elim ]
+
+type print_kind = [ `Env | `Coer ]
+
+type 'term macro =
+ (* Whelp's stuff *)
+ | WHint of loc * 'term
+ | WMatch of loc * 'term
+ | WInstance of loc * 'term
+ | WLocate of loc * string
+ | WElim of loc * 'term
+ (* real macros *)
+(* | Abort of loc *)
+ | Print of loc * string
+ | Check of loc * 'term
+ | Hint of loc
+ | Quit of loc
+(* | Redo of loc * int option
+ | Undo of loc * int option *)
+(* | Print of loc * print_kind *)
+ | Search_pat of loc * search_kind * string (* searches with string pattern *)
+ | Search_term of loc * search_kind * 'term (* searches with term pattern *)
+
+(** To be increased each time the command type below changes, used for "safe"
+ * marshalling *)
+let magic = 5
+
+type 'obj command =
+ | Default of loc * string * UriManager.uri list
+ | Include of loc * string
+ | Set of loc * string * string
+ | Drop of loc
+ | Qed of loc
+ | Coercion of loc * UriManager.uri * bool (* add composites *)
+ | Obj of loc * 'obj
+
+type ('term, 'lazy_term, 'reduction, 'ident) tactical =
+ | Tactic of loc * ('term, 'lazy_term, 'reduction, 'ident) tactic
+ | Do of loc * int * ('term, 'lazy_term, 'reduction, 'ident) tactical
+ | Repeat of loc * ('term, 'lazy_term, 'reduction, 'ident) tactical
+ | Seq of loc * ('term, 'lazy_term, 'reduction, 'ident) tactical list
+ (* sequential composition *)
+ | Then of loc * ('term, 'lazy_term, 'reduction, 'ident) tactical *
+ ('term, 'lazy_term, 'reduction, 'ident) tactical list
+ | First of loc * ('term, 'lazy_term, 'reduction, 'ident) tactical list
+ (* try a sequence of loc * tactical until one succeeds, fail otherwise *)
+ | Try of loc * ('term, 'lazy_term, 'reduction, 'ident) tactical
+ (* try a tactical and mask failures *)
+ | Solve of loc * ('term, 'lazy_term, 'reduction, 'ident) tactical list
+
+ | Dot of loc
+ | Semicolon of loc
+ | Branch of loc
+ | Shift of loc
+ | Pos of loc * int
+ | Merge of loc
+ | Focus of loc * int list
+ | Unfocus of loc
+ | Skip of loc
+
+let is_punctuation =
+ function
+ | Dot _ | Semicolon _ | Branch _ | Shift _ | Merge _ | Pos _ -> true
+ | _ -> false
+
+type ('term, 'lazy_term, 'reduction, 'obj, 'ident) code =
+ | Command of loc * 'obj command
+ | Macro of loc * 'term macro
+ | Tactical of loc * ('term, 'lazy_term, 'reduction, 'ident) tactical
+ * ('term, 'lazy_term, 'reduction, 'ident) tactical option(* punctuation *)
+
+type ('term, 'lazy_term, 'reduction, 'obj, 'ident) comment =
+ | Note of loc * string
+ | Code of loc * ('term, 'lazy_term, 'reduction, 'obj, 'ident) code
+
+type ('term, 'lazy_term, 'reduction, 'obj, 'ident) statement =
+ | Executable of loc * ('term, 'lazy_term, 'reduction, 'obj, 'ident) code
+ | Comment of loc * ('term, 'lazy_term, 'reduction, 'obj, 'ident) comment
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