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(*
* This file is part of Coccinelle, licensed under the terms of the GPL v2.
* See copyright.txt in the Coccinelle source code for more information.
* The Coccinelle source code can be obtained at http://coccinelle.lip6.fr
*)
module Ast = Ast_cocci
module Past = Ast_popl
(* --------------------------------------------------------------------- *)
let rec stm s =
match Ast.unwrap s with
Ast.Atomic(ast) ->
(match Ast.unwrap ast with
Ast.ExprStatement(_,_) -> Past.Term ast
| Ast.Exp(_) -> Past.Term ast
| Ast.Decl(_,_,_) -> Past.Term ast
| _ -> failwith "complex statements not supported")
| Ast.Disj(stm1::stm2::stmts) ->
List.fold_left
(function prev ->
function cur ->
Past.Or(Past.Seq(prev,Past.Empty),stm_list cur))
(Past.Or(stm_list stm1,stm_list stm2)) stmts
| Ast.Dots(dots,whencodes,_,_) ->
(match whencodes with
[Ast.WhenNot(a)] -> Past.DInfo(Past.When(Past.Dots,stm_list a),[],[])
| _ -> failwith "only one when != supported")
| Ast.Nest(stmt_dots,whencodes,false,_,_) ->
let nest = Past.Nest(stm_list stmt_dots) in
(match whencodes with
[Ast.WhenNot(a)] -> Past.DInfo(Past.When(nest,stm_list a),[],[])
| _ -> failwith "only when != supported")
| Ast.While(header,body,(_,_,_,aft)) | Ast.For(header,body,(_,_,_,aft)) ->
(* only allowed if only the header is significant *)
(match (Ast.unwrap body,aft) with
(Ast.Atomic(re),Ast.CONTEXT(_,Ast.NOTHING)) ->
(match Ast.unwrap re with
Ast.MetaStmt(_,Type_cocci.Unitary,_,false) -> Past.Term header
| _ -> failwith "unsupported statement1")
| _ -> failwith "unsupported statement2")
| _ ->
Pretty_print_cocci.statement "" s;
failwith "unsupported statement3"
and stm_list s =
List.fold_right
(function cur -> function rest -> Past.Seq(stm cur, rest))
(Ast.unwrap s) Past.Empty
let top s =
match Ast.unwrap s with
Ast.CODE(stmt_dots) -> stm_list stmt_dots
| _ -> failwith "only CODE handled"
|