ctl/ast_ctl.ml

   1 (*
   2  * Copyright 2010, INRIA, University of Copenhagen
   3  * Julia Lawall, Rene Rydhof Hansen, Gilles Muller, Nicolas Palix
   4  * Copyright 2005-2009, Ecole des Mines de Nantes, University of Copenhagen
   5  * Yoann Padioleau, Julia Lawall, Rene Rydhof Hansen, Henrik Stuart, Gilles Muller, Nicolas Palix
   6  * This file is part of Coccinelle.
   7  *
   8  * Coccinelle is free software: you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation, according to version 2 of the License.
  11  *
  12  * Coccinelle is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with Coccinelle.  If not, see <http://www.gnu.org/licenses/>.
  19  *
  20  * The authors reserve the right to distribute this or future versions of
  21  * Coccinelle under other licenses.
  22  *)
  23
  24
  25
  26 (* ---------------------------------------------------------------------- *)
  27 (* Types                                                                  *)
  28 (* ---------------------------------------------------------------------- *)
  29
  30 type strict = STRICT | NONSTRICT
  31
  32 type keep_binding = bool (* true = put in witness tree *)
  33
  34 (* CTL parameterised on basic predicates and metavar's*)
  35 type ('pred,'mvar,'anno) generic_ctl =
  36   | False
  37   | True
  38   | Pred of 'pred
  39   | Not of (('pred,'mvar,'anno) generic_ctl)
  40   | Exists of keep_binding * 'mvar * (('pred,'mvar,'anno) generic_ctl)
  41   | And of strict * (('pred,'mvar,'anno) generic_ctl) *
  42       (('pred,'mvar,'anno) generic_ctl)
  43   | AndAny of direction * strict * (('pred,'mvar,'anno) generic_ctl) *
  44       (('pred,'mvar,'anno) generic_ctl)
  45   | HackForStmt of direction * strict * (('pred,'mvar,'anno) generic_ctl) *
  46       (('pred,'mvar,'anno) generic_ctl)
  47   | Or  of (('pred,'mvar,'anno) generic_ctl) *
  48       (('pred,'mvar,'anno) generic_ctl)
  49   | Implies of (('pred,'mvar,'anno) generic_ctl) *
  50       (('pred,'mvar,'anno) generic_ctl)
  51   | AF of direction * strict * (('pred,'mvar,'anno) generic_ctl)
  52   | AX of direction * strict * (('pred,'mvar,'anno) generic_ctl)
  53   | AG of direction * strict * (('pred,'mvar,'anno) generic_ctl)
  54   | AW of direction * strict *
  55         (* versions with exists v *)
  56         (('pred,'mvar,'anno) generic_ctl) * (('pred,'mvar,'anno) generic_ctl)
  57   | AU of direction * strict *
  58         (* versions with exists v *)
  59         (('pred,'mvar,'anno) generic_ctl) * (('pred,'mvar,'anno) generic_ctl)
  60   | EF of direction * (('pred,'mvar,'anno) generic_ctl)
  61   | EX of direction * (('pred,'mvar,'anno) generic_ctl)
  62   | EG of direction * (('pred,'mvar,'anno) generic_ctl)
  63   | EU of direction * (('pred,'mvar,'anno) generic_ctl) *
  64       (('pred,'mvar,'anno) generic_ctl)
  65   | Let of string *
  66       (('pred,'mvar,'anno) generic_ctl) *
  67       (('pred,'mvar,'anno) generic_ctl)
  68   | LetR of direction * string * (* evals phi1 wrt reachable states *)
  69       (('pred,'mvar,'anno) generic_ctl) *
  70       (('pred,'mvar,'anno) generic_ctl)
  71   | Ref of string
  72   | SeqOr of (('pred,'mvar,'anno) generic_ctl) *
  73       (('pred,'mvar,'anno) generic_ctl)
  74   | Uncheck of (('pred,'mvar,'anno) generic_ctl)
  75   | InnerAnd of (('pred,'mvar,'anno) generic_ctl)
  76   | XX of (('pred,'mvar,'anno) generic_ctl) (* fake, used in asttoctl *)
  77
  78 and direction = FORWARD (* the normal way *) | BACKWARD (* toward the start *)
  79
  80 let unwrap (ctl,_) = ctl
  81 let rewrap (_,model) ctl = (ctl,model)
  82 let get_line (_,l) = l
  83
  84
  85 (* NOTE: No explicit representation of the bottom subst., i.e., FALSE *)
  86 type ('mvar,'value) generic_subst =
  87   | Subst of 'mvar * 'value
  88   | NegSubst of 'mvar * 'value
  89 type ('mvar,'value) generic_substitution = ('mvar,'value) generic_subst list
  90
  91 type ('state,'subst,'anno) generic_witnesstree =
  92     Wit of
  93       'state * 'subst * 'anno * ('state,'subst,'anno) generic_witnesstree list
  94   | NegWit of ('state,'subst,'anno) generic_witnesstree
  95
  96 (* ---------------------------------------------------------------------- *)
  97
  98 type 'a modif = Modif of 'a | UnModif of 'a | Control
  99
 100 (* ---------------------------------------------------------------------- *)