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