(*
* Copyright 2005-2010, Ecole des Mines de Nantes, University of Copenhagen
* Yoann Padioleau, Julia Lawall, Rene Rydhof Hansen, Henrik Stuart, Gilles Muller, Nicolas Palix
* This file is part of Coccinelle.
*
* Coccinelle is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, according to version 2 of the License.
*
* Coccinelle is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Coccinelle. If not, see .
*
* The authors reserve the right to distribute this or future versions of
* Coccinelle under other licenses.
*)
(*
* Copyright 2005-2010, Ecole des Mines de Nantes, University of Copenhagen
* Yoann Padioleau, Julia Lawall, Rene Rydhof Hansen, Henrik Stuart, Gilles Muller, Nicolas Palix
* This file is part of Coccinelle.
*
* Coccinelle is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, according to version 2 of the License.
*
* Coccinelle is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Coccinelle. If not, see .
*
* The authors reserve the right to distribute this or future versions of
* Coccinelle under other licenses.
*)
module Ast = Ast_cocci
module Ast0 = Ast0_cocci
module V0 = Visitor_ast0
module VT0 = Visitor_ast0_types
(* call set_test_pos on test expressions *)
(* The goal of this is to identify test expressions in the SmPL file, so that
isomorphisms like X != NULL => X are only applied in a test expression context.
There is a related check in cocci_vs_c3.ml that in x || ..., a match
without the || is only accepted in a test expression context. This uses
the annotations in the C file. *)
let rec process_exp e =
let e = Ast0.set_test_pos e in(* allow test isos *)
let e = Ast0.set_test_exp e in(* require that a test expression is matched *)
match Ast0.unwrap e with
Ast0.Paren(lp,e1,rp) ->
Ast0.rewrap e (Ast0.Paren(lp,process_exp e1,rp))
| _ -> e
let set_test_poss =
let expression r k e =
let e = k e in
match Ast0.unwrap e with
Ast0.CondExpr(e1,q,e2,c,e3) ->
Ast0.rewrap e (Ast0.CondExpr(process_exp e1,q,e2,c,e3))
| Ast0.Binary(e1,op,e2) ->
(match Ast0.unwrap_mcode op with
Ast.Logical(Ast.AndLog) | Ast.Logical(Ast.OrLog) ->
Ast0.rewrap e (Ast0.Binary(process_exp e1,op,process_exp e2))
| _ -> e)
| Ast0.Unary(e1,op) ->
(match Ast0.unwrap_mcode op with
Ast.Not -> Ast0.rewrap e (Ast0.Unary(process_exp e1,op))
| _ -> e)
| _ -> e in
let process_wc = function
Ast0.WhenNotTrue(e) -> Ast0.WhenNotTrue(process_exp e)
| Ast0.WhenNotFalse(e) -> Ast0.WhenNotFalse(process_exp e)
| wc -> wc in
let statement r k s =
let s = k s in
match Ast0.unwrap s with
Ast0.IfThen(i,lp,e,rp,s1,aft) ->
Ast0.rewrap s (Ast0.IfThen(i,lp,process_exp e,rp,s1,aft))
| Ast0.IfThenElse(i,lp,e,rp,s1,e1,s2,aft) ->
Ast0.rewrap s (Ast0.IfThenElse(i,lp,process_exp e,rp,s1,e1,s2,aft))
| Ast0.While(i,lp,e,rp,s1,aft) ->
Ast0.rewrap s (Ast0.While(i,lp,process_exp e,rp,s1,aft))
| Ast0.Do(d,s1,w,lp,e,rp,sc) ->
Ast0.rewrap s (Ast0.Do(d,s1,w,lp,process_exp e,rp,sc))
| Ast0.For(f,lp,e1,sc1,Some e2,sc2,e3,rp,s1,aft) ->
Ast0.rewrap s
(Ast0.For(f,lp,e1,sc1,Some (process_exp e2),sc2,e3,rp,s1,aft))
| Ast0.Dots(d,wc) ->
Ast0.rewrap s (Ast0.Dots(d,List.map process_wc wc))
| Ast0.Nest(l,s1,r,wc,m) ->
Ast0.rewrap s (Ast0.Nest(l,s1,r,List.map process_wc wc,m))
| _ -> s in
V0.rebuilder
{V0.rebuilder_functions with
VT0.rebuilder_exprfn = expression; VT0.rebuilder_stmtfn = statement}
let process = List.map set_test_poss.VT0.rebuilder_rec_top_level
let process_anything = set_test_poss.VT0.rebuilder_rec_anything