popl/asttopopl.ml

   1 module Ast = Ast_cocci
   2 module Past = Ast_popl
   3
   4 (* --------------------------------------------------------------------- *)
   5
   6 let rec stm s =
   7   match Ast.unwrap s with
   8     Ast.Atomic(ast) ->
   9       (match Ast.unwrap ast with
  10         Ast.ExprStatement(_,_) -> Past.Term ast
  11       | Ast.Exp(_) -> Past.Term ast
  12       | Ast.Decl(_,_,_) -> Past.Term ast
  13       | _ -> failwith "complex statements not supported")
  14   | Ast.Disj(stm1::stm2::stmts) ->
  15       List.fold_left
  16         (function prev ->
  17           function cur ->
  18             Past.Or(Past.Seq(prev,Past.Empty),stm_list cur))
  19         (Past.Or(stm_list stm1,stm_list stm2)) stmts
  20   | Ast.Dots(dots,whencodes,_,_) ->
  21       (match whencodes with
  22         [Ast.WhenNot(a)] -> Past.DInfo(Past.When(Past.Dots,stm_list a),[],[])
  23       | _ -> failwith "only one when != supported")
  24   | Ast.Nest(stmt_dots,whencodes,false,_,_) ->
  25       let nest = Past.Nest(stm_list stmt_dots) in
  26       (match whencodes with
  27         [Ast.WhenNot(a)] -> Past.DInfo(Past.When(nest,stm_list a),[],[])
  28       | _ -> failwith "only when != supported")
  29   | Ast.While(header,body,(_,_,_,aft)) | Ast.For(header,body,(_,_,_,aft)) ->
  30       (* only allowed if only the header is significant *)
  31       (match (Ast.unwrap body,aft) with
  32         (Ast.Atomic(re),Ast.CONTEXT(_,Ast.NOTHING)) ->
  33           (match Ast.unwrap re with
  34             Ast.MetaStmt(_,Type_cocci.Unitary,_,false) -> Past.Term header
  35           | _ -> failwith "unsupported statement1")
  36       | _ -> failwith "unsupported statement2")
  37   | _ ->
  38       Pretty_print_cocci.statement "" s;
  39       failwith "unsupported statement3"
  40
  41 and stm_list s =
  42   match Ast.unwrap s with
  43     Ast.DOTS(d) ->
  44       List.fold_right
  45         (function cur -> function rest -> Past.Seq(stm cur, rest))
  46         d Past.Empty
  47   | _ -> failwith "only DOTS handled"
  48
  49 let top s =
  50   match Ast.unwrap s with
  51     Ast.CODE(stmt_dots) -> stm_list stmt_dots
  52   | _ -> failwith "only CODE handled"