ctl/ast_ctl.ml

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