engine/lib_engine.ml

   1 (*
   2  * Copyright 2012, INRIA
   3  * Julia Lawall, Gilles Muller
   4  * Copyright 2010-2011, INRIA, University of Copenhagen
   5  * Julia Lawall, Rene Rydhof Hansen, Gilles Muller, Nicolas Palix
   6  * Copyright 2005-2009, Ecole des Mines de Nantes, University of Copenhagen
   7  * Yoann Padioleau, Julia Lawall, Rene Rydhof Hansen, Henrik Stuart, Gilles Muller, Nicolas Palix
   8  * This file is part of Coccinelle.
   9  *
  10  * Coccinelle is free software: you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation, according to version 2 of the License.
  13  *
  14  * Coccinelle is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with Coccinelle.  If not, see <http://www.gnu.org/licenses/>.
  21  *
  22  * The authors reserve the right to distribute this or future versions of
  23  * Coccinelle under other licenses.
  24  *)
  25
  26
  27 open Ograph_extended
  28
  29 (*****************************************************************************)
  30 (* the different ctl formula related types *)
  31 (*****************************************************************************)
  32 type mvar = Ast_cocci.meta_name
  33
  34 type predicate =
  35     InLoop | TrueBranch | FalseBranch
  36   | After (* pointer to the code after an if or while *)
  37   | FallThrough | LoopFallThrough
  38   | Return (* any exit from the current function *)
  39   | FunHeader | UnsafeBrace | Top | Exit | ErrorExit | Goto
  40   | Paren of Ast_cocci.meta_name
  41   | Match of Ast_cocci.rule_elem
  42   | Label of Ast_cocci.meta_name
  43   | BCLabel of Ast_cocci.meta_name (* parent of break or continue *)
  44   | PrefixLabel of Ast_cocci.meta_name
  45   | BindGood of Ast_cocci.meta_name (* used to implement \+ *)
  46   | BindBad  of Ast_cocci.meta_name
  47   | FakeBrace
  48
  49 (* coccionly: *)
  50 type ctlcocci = (predicate, Ast_cocci.meta_name) Wrapper_ctl.wrapped_ctl
  51
  52
  53 (*****************************************************************************)
  54 (* the different binding types *)
  55 (*****************************************************************************)
  56 type metavars_binding = Ast_c.metavars_binding
  57
  58 (* used in ctlcocci_integration *)
  59 type metavar_binding_kind2 =
  60   | NormalMetaVal of Ast_c.metavar_binding_kind
  61   | ParenVal of Ast_cocci.meta_name
  62   | LabelVal of labelval
  63   | GoodVal | BadVal (* used to implement \+ *)
  64
  65 and labelval = Absolute of int list | Prefix of int list
  66
  67 and metavars_binding2 = (mvar, metavar_binding_kind2) Common.assoc
  68
  69
  70
  71 (*****************************************************************************)
  72 (* the CTL model related types *)
  73 (*****************************************************************************)
  74 (* coccionly: *)
  75 type label_ctlcocci =
  76  predicate ->
  77  (nodei *
  78  (predicate * (mvar, metavar_binding_kind2) Ast_ctl.generic_substitution))
  79  list
  80
  81 type model = Control_flow_c.cflow * label_ctlcocci * nodei list
  82
  83 type transformation_info =
  84  (nodei * metavars_binding * Ast_cocci.rule_elem) list
  85
  86 type numbered_transformation_info =
  87  (int list * (nodei * metavars_binding * Ast_cocci.rule_elem)) list
  88
  89
  90 (*****************************************************************************)
  91 (* comparing binding *)
  92 (*****************************************************************************)
  93
  94 let equal_binding xs ys =
  95   List.sort compare xs = List.sort compare ys