engine/lib_engine.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 open Ograph_extended
  24
  25 (*****************************************************************************)
  26 (* the different ctl formula related types *)
  27 (*****************************************************************************)
  28 type mvar = Ast_cocci.meta_name
  29
  30 type predicate =
  31     InLoop | TrueBranch | FalseBranch
  32   | After (* pointer to the code after an if or while *)
  33   | FallThrough | LoopFallThrough
  34   | Return (* any exit from the current function *)
  35   | FunHeader | Top | Exit | ErrorExit | Goto
  36   | Paren of Ast_cocci.meta_name
  37   | Match of Ast_cocci.rule_elem
  38   | Label of Ast_cocci.meta_name
  39   | BCLabel of Ast_cocci.meta_name (* parent of break or continue *)
  40   | PrefixLabel of Ast_cocci.meta_name
  41   | BindGood of Ast_cocci.meta_name (* used to implement \+ *)
  42   | BindBad  of Ast_cocci.meta_name
  43   | FakeBrace
  44
  45 (* coccionly: *)
  46 type ctlcocci = (predicate, Ast_cocci.meta_name) Wrapper_ctl.wrapped_ctl
  47
  48
  49 (*****************************************************************************)
  50 (* the different binding types *)
  51 (*****************************************************************************)
  52 type metavars_binding = Ast_c.metavars_binding
  53
  54 (* used in ctlcocci_integration *)
  55 type metavar_binding_kind2 =
  56   | NormalMetaVal of Ast_c.metavar_binding_kind
  57   | ParenVal of Ast_cocci.meta_name
  58   | LabelVal of labelval
  59   | GoodVal | BadVal (* used to implement \+ *)
  60
  61 and labelval = Absolute of int list | Prefix of int list
  62
  63 and metavars_binding2 = (mvar, metavar_binding_kind2) Common.assoc
  64
  65
  66
  67 (*****************************************************************************)
  68 (* the CTL model related types *)
  69 (*****************************************************************************)
  70 (* coccionly: *)
  71 type label_ctlcocci =
  72  predicate ->
  73  (nodei *
  74  (predicate * (mvar, metavar_binding_kind2) Ast_ctl.generic_substitution))
  75  list
  76
  77 type model = Control_flow_c.cflow * label_ctlcocci * nodei list
  78
  79 type transformation_info =
  80  (nodei * metavars_binding * Ast_cocci.rule_elem) list
  81
  82 type numbered_transformation_info =
  83  (int list * (nodei * metavars_binding * Ast_cocci.rule_elem)) list
  84
  85
  86 (*****************************************************************************)
  87 (* comparing binding *)
  88 (*****************************************************************************)
  89
  90 let equal_binding xs ys =
  91   List.sort compare xs = List.sort compare ys