popl09/asttopopl.ml

   1 (*
   2  * Copyright 2005-2010, 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  * Copyright 2005-2010, Ecole des Mines de Nantes, University of Copenhagen
  25  * Yoann Padioleau, Julia Lawall, Rene Rydhof Hansen, Henrik Stuart, Gilles Muller, Nicolas Palix
  26  * This file is part of Coccinelle.
  27  *
  28  * Coccinelle is free software: you can redistribute it and/or modify
  29  * it under the terms of the GNU General Public License as published by
  30  * the Free Software Foundation, according to version 2 of the License.
  31  *
  32  * Coccinelle is distributed in the hope that it will be useful,
  33  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  34  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  35  * GNU General Public License for more details.
  36  *
  37  * You should have received a copy of the GNU General Public License
  38  * along with Coccinelle.  If not, see <http://www.gnu.org/licenses/>.
  39  *
  40  * The authors reserve the right to distribute this or future versions of
  41  * Coccinelle under other licenses.
  42  *)
  43
  44
  45 module Ast = Ast_cocci
  46 module Past = Ast_popl
  47
  48 (* --------------------------------------------------------------------- *)
  49
  50 let term s inif =
  51   let fail _ =
  52     Pretty_print_cocci.statement "" s;
  53     Format.print_newline();
  54     failwith "complex statements not supported" in
  55   match Ast.unwrap s with
  56     Ast.Atomic(ast) ->
  57       (match Ast.unwrap ast with
  58         Ast.ExprStatement(_,_) -> Past.Atomic ast
  59       | Ast.Exp(_) -> Past.Atomic ast
  60       | Ast.Decl(_,_,_) -> Past.Atomic ast
  61       | Ast.ReturnExpr(_,_,_) -> Past.Atomic ast
  62       | Ast.MetaStmt(_,_,_,_) when inif -> Past.Atomic ast
  63       | Ast.DisjRuleElem(_) -> Past.Atomic ast
  64       | _ -> fail())
  65   | _ -> fail()
  66
  67 let rec stm s =
  68   match Ast.unwrap s with
  69     Ast.Atomic(ast) -> Past.Term(term s false,dots_bef_aft s false)
  70   | Ast.IfThen(header,body,aft) ->
  71       Past.Term(
  72       Past.IfThen(Past.Atomic header,term body true,aft),
  73       dots_bef_aft s true)
  74   | Ast.Disj(stm1::stm2::stmts) ->
  75       List.fold_left
  76         (function prev ->
  77           function cur ->
  78             Past.Or(Past.Seq(prev,Past.Empty),stm_list cur))
  79         (Past.Or(stm_list stm1,stm_list stm2)) stmts
  80   | Ast.Dots(dots,whencodes,_,_) ->
  81       Past.DInfo
  82         (List.fold_left
  83            (function prev ->
  84              function
  85                  Ast.WhenNot(a) -> Past.When(prev,stm_list a)
  86                | _ -> failwith "only when != supported")
  87            Past.Dots whencodes)
  88   | Ast.Nest(starter,stmt_dots,ender,whencodes,false,_,_) ->
  89       (match Ast.get_mcodekind starter with
  90         Ast.MINUS _ -> failwith "only context nests supported"
  91       | _ -> ());
  92       let nest = Past.Nest(stm_list stmt_dots) in
  93       Past.DInfo
  94         (List.fold_left
  95            (function prev ->
  96              function
  97                  Ast.WhenNot(a) -> Past.When(prev,stm_list a)
  98                | _ -> failwith "only when != supported")
  99            nest whencodes)
 100   | _ ->
 101       Pretty_print_cocci.statement "" s;
 102       failwith "unsupported statement3"
 103
 104 and dots_bef_aft s inif =
 105   match Ast.get_dots_bef_aft s with
 106     Ast.AddingBetweenDots (brace_term,n) ->
 107       Past.AddingBetweenDots (term brace_term inif,n)
 108   | Ast.DroppingBetweenDots (brace_term,n) ->
 109       Past.DroppingBetweenDots (term brace_term inif,n)
 110   | Ast.NoDots -> Past.NoDots
 111
 112 and stm_list s =
 113   match Ast.unwrap s with
 114     Ast.DOTS(d) ->
 115       List.fold_right
 116         (function cur -> function rest -> Past.Seq(stm cur, rest))
 117         d Past.Empty
 118   | _ -> failwith "only DOTS handled"
 119
 120 let top s =
 121   match Ast.unwrap s with
 122     Ast.CODE(stmt_dots) -> stm_list stmt_dots
 123   | _ -> failwith "only CODE handled"