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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
*)
(* --------------------------------------------------------------------- *)
(* creates AsExpr, etc *)
(* @ attached metavariables can only be associated with positions, so nothing
to do for them *)
(* Why doesn't this use the Ast0 visitor? *)
module Ast = Ast_cocci
module Ast0 = Ast0_cocci
module V0 = Visitor_ast0
module VT0 = Visitor_ast0_types
let map_split f l = List.split(List.map f l)
let rewrap x (n,e) = (n,Ast0.rewrap x e)
let mcode _ x =
let (nonpos,ispos) =
List.partition (function Ast0.MetaPosTag _ -> false | _ -> true)
(Ast0.get_pos x) in
(nonpos,Ast0.set_pos ispos x)
let option_default = []
let bind l1 l2 =
let oldnames = List.map Ast0.meta_pos_name l2 in
List.fold_left
(function prev -> function e1 ->
if List.mem (Ast0.meta_pos_name e1) oldnames then prev else e1::prev)
l2 l1
let multibind l =
let rec loop = function
[] -> option_default
| [x] -> x
| x::xs -> bind x (loop xs) in
loop l
let map_split_bind f l =
let (n,e) = List.split(List.map f l) in (multibind n,e)
let get_option f = function
Some x -> let (n,e) = f x in (n,Some e)
| None -> (option_default,None)
let dots fn d = rewrap d (map_split_bind fn (Ast0.unwrap d))
let ident r k i =
let (metas,i) = k i in
List.fold_left
(function (other_metas,id) ->
function
Ast0.IdentTag(id_meta) ->
(other_metas,Ast0.rewrap id (Ast0.AsIdent(id,id_meta)))
| x -> (x::other_metas,id))
([],i) metas
and expression r k e =
let (metas,e) = k e in
List.fold_left
(function (other_metas,exp) ->
function
Ast0.ExprTag(exp_meta) ->
(other_metas,Ast0.rewrap exp (Ast0.AsExpr(exp,exp_meta)))
| Ast0.IdentTag(id_meta) ->
(other_metas,
Ast0.rewrap exp
(Ast0.AsExpr(exp,Ast0.rewrap exp (Ast0.Ident(id_meta)))))
| Ast0.StmtTag(stm_meta) ->
(other_metas, Ast0.rewrap exp (Ast0.AsSExpr(exp,stm_meta)))
| x -> (x::other_metas,exp))
([],e) metas
and typeC r k t =
let (metas,t) = k t in
List.fold_left
(function (other_metas,ty) ->
function
Ast0.TypeCTag(ty_meta) ->
(other_metas,Ast0.rewrap ty (Ast0.AsType(ty,ty_meta)))
| x -> (x::other_metas,ty))
([],t) metas
and declaration r k d =
let (metas,d) = k d in
List.fold_left
(function (other_metas,decl) ->
function
Ast0.DeclTag(decl_meta) ->
(other_metas,Ast0.rewrap decl (Ast0.AsDecl(decl,decl_meta)))
| x -> (x::other_metas,decl))
([],d) metas
and initialiser r k i =
let (metas,i) = k i in
List.fold_left
(function (other_metas,init) ->
function
Ast0.InitTag(init_meta) ->
(other_metas,Ast0.rewrap init (Ast0.AsInit(init,init_meta)))
| x -> (x::other_metas,init))
([],i) metas
and param r k p =
match Ast0.unwrap p with
Ast0.MetaParamList(name,lenname,cstr,pure) ->
let (metas,p) =
rewrap p
(let (n,name) = mcode () name in
(n,Ast0.MetaParamList(name,lenname,cstr,pure))) in
List.fold_left
(function (other_metas,id) ->
function
((Ast0.ExprTag(exp_meta)) as x) ->
(match Ast0.unwrap exp_meta with
Ast0.MetaExprList _ ->
(other_metas,Ast0.rewrap p (Ast0.AsParam(p,exp_meta)))
| _ -> (x::other_metas,id))
| x -> (x::other_metas,id))
([],p) metas
| _ -> k p
and statement r k s =
let (metas,s) = k s in
List.fold_left
(function (other_metas,stmt) ->
function
Ast0.StmtTag(stmt_meta) ->
(other_metas,Ast0.rewrap stmt (Ast0.AsStmt(stmt,stmt_meta)))
| x -> (x::other_metas,stmt))
([],s) metas
let res = V0.combiner_rebuilder bind option_default
{V0.combiner_rebuilder_functions with
VT0.combiner_rebuilder_meta_mcode = mcode;
VT0.combiner_rebuilder_string_mcode = mcode;
VT0.combiner_rebuilder_const_mcode = mcode;
VT0.combiner_rebuilder_simpleAssign_mcode = mcode;
VT0.combiner_rebuilder_opAssign_mcode = mcode;
VT0.combiner_rebuilder_fix_mcode = mcode;
VT0.combiner_rebuilder_unary_mcode = mcode;
VT0.combiner_rebuilder_arithOp_mcode = mcode;
VT0.combiner_rebuilder_logicalOp_mcode = mcode;
VT0.combiner_rebuilder_cv_mcode = mcode;
VT0.combiner_rebuilder_sign_mcode = mcode;
VT0.combiner_rebuilder_struct_mcode = mcode;
VT0.combiner_rebuilder_storage_mcode = mcode;
VT0.combiner_rebuilder_inc_mcode = mcode;
VT0.combiner_rebuilder_identfn = ident;
VT0.combiner_rebuilder_exprfn = expression;
VT0.combiner_rebuilder_tyfn = typeC;
VT0.combiner_rebuilder_initfn = initialiser;
VT0.combiner_rebuilder_paramfn = param;
VT0.combiner_rebuilder_declfn = declaration;
VT0.combiner_rebuilder_stmtfn = statement}
let do_process fn line_getter t =
match fn t with
([],code) -> code
| (l,_) ->
failwith
(Printf.sprintf "%s contains unattached metavariables: %s"
(line_getter t)
(String.concat ", "
(List.map
(function nm ->
let (r,n) = Ast0.unwrap_mcode nm in r^"."^n)
(List.map Ast0.meta_pos_name l))))
let process =
let line t = Printf.sprintf "rule starting on line %d" (Ast0.get_line t) in
List.map (do_process res.VT0.top_level line)
let process_anything x = do_process res.VT0.anything (fun _ -> "term") x
|
