| 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 | module Ast = Ast_cocci |
| 24 | module Ast0 = Ast0_cocci |
| 25 | module V0 = Visitor_ast0 |
| 26 | module VT0 = Visitor_ast0_types |
| 27 | |
| 28 | (* call set_test_pos on test expressions *) |
| 29 | |
| 30 | (* The goal of this is to identify test expressions in the SmPL file, so that |
| 31 | isomorphisms like X != NULL => X are only applied in a test expression context. |
| 32 | |
| 33 | There is a related check in cocci_vs_c3.ml that in x || ..., a match |
| 34 | without the || is only accepted in a test expression context. This uses |
| 35 | the annotations in the C file. *) |
| 36 | |
| 37 | let rec process_exp e = |
| 38 | let e = Ast0.set_test_pos e in(* allow test isos *) |
| 39 | let e = Ast0.set_test_exp e in(* require that a test expression is matched *) |
| 40 | match Ast0.unwrap e with |
| 41 | Ast0.Paren(lp,e1,rp) -> |
| 42 | Ast0.rewrap e (Ast0.Paren(lp,process_exp e1,rp)) |
| 43 | | _ -> e |
| 44 | |
| 45 | let set_test_poss = |
| 46 | let expression r k e = |
| 47 | let e = k e in |
| 48 | match Ast0.unwrap e with |
| 49 | Ast0.CondExpr(e1,q,e2,c,e3) -> |
| 50 | Ast0.rewrap e (Ast0.CondExpr(process_exp e1,q,e2,c,e3)) |
| 51 | | Ast0.Binary(e1,op,e2) -> |
| 52 | (match Ast0.unwrap_mcode op with |
| 53 | Ast.Logical(Ast.AndLog) | Ast.Logical(Ast.OrLog) -> |
| 54 | Ast0.rewrap e (Ast0.Binary(process_exp e1,op,process_exp e2)) |
| 55 | | _ -> e) |
| 56 | | Ast0.Unary(e1,op) -> |
| 57 | (match Ast0.unwrap_mcode op with |
| 58 | Ast.Not -> Ast0.rewrap e (Ast0.Unary(process_exp e1,op)) |
| 59 | | _ -> e) |
| 60 | | _ -> e in |
| 61 | |
| 62 | let process_wc = function |
| 63 | Ast0.WhenNotTrue(e) -> Ast0.WhenNotTrue(process_exp e) |
| 64 | | Ast0.WhenNotFalse(e) -> Ast0.WhenNotFalse(process_exp e) |
| 65 | | wc -> wc in |
| 66 | |
| 67 | let statement r k s = |
| 68 | let s = k s in |
| 69 | match Ast0.unwrap s with |
| 70 | Ast0.IfThen(i,lp,e,rp,s1,aft) -> |
| 71 | Ast0.rewrap s (Ast0.IfThen(i,lp,process_exp e,rp,s1,aft)) |
| 72 | | Ast0.IfThenElse(i,lp,e,rp,s1,e1,s2,aft) -> |
| 73 | Ast0.rewrap s (Ast0.IfThenElse(i,lp,process_exp e,rp,s1,e1,s2,aft)) |
| 74 | | Ast0.While(i,lp,e,rp,s1,aft) -> |
| 75 | Ast0.rewrap s (Ast0.While(i,lp,process_exp e,rp,s1,aft)) |
| 76 | | Ast0.Do(d,s1,w,lp,e,rp,sc) -> |
| 77 | Ast0.rewrap s (Ast0.Do(d,s1,w,lp,process_exp e,rp,sc)) |
| 78 | | Ast0.For(f,lp,e1,sc1,Some e2,sc2,e3,rp,s1,aft) -> |
| 79 | Ast0.rewrap s |
| 80 | (Ast0.For(f,lp,e1,sc1,Some (process_exp e2),sc2,e3,rp,s1,aft)) |
| 81 | | Ast0.Dots(d,wc) -> |
| 82 | Ast0.rewrap s (Ast0.Dots(d,List.map process_wc wc)) |
| 83 | | Ast0.Nest(l,s1,r,wc,m) -> |
| 84 | Ast0.rewrap s (Ast0.Nest(l,s1,r,List.map process_wc wc,m)) |
| 85 | | _ -> s in |
| 86 | |
| 87 | V0.rebuilder |
| 88 | {V0.rebuilder_functions with |
| 89 | VT0.rebuilder_exprfn = expression; VT0.rebuilder_stmtfn = statement} |
| 90 | |
| 91 | let process = List.map set_test_poss.VT0.rebuilder_rec_top_level |
| 92 | |
| 93 | let process_anything = set_test_poss.VT0.rebuilder_rec_anything |
| 94 | |