Coccinelle release-1.0.0-rc11

[bpt/coccinelle.git] / parsing_c / parser_c.mly

%{
(* Yoann Padioleau
 *
 * Copyright (C) 2002, 2006, 2007, 2008, 2009 Yoann Padioleau
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License (GPL)
 * version 2 as published by the Free Software Foundation.
 *
 * This program 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
 * file license.txt for more details.
 *)
open Common

open Ast_c

module LP = Lexer_parser
open Lexer_parser (* for the fields *)

open Semantic_c (* Semantic exn *)


(*****************************************************************************)
(* Wrappers *)
(*****************************************************************************)
let warning s v =
  if !Flag_parsing_c.verbose_parsing
  then Common.warning ("PARSING: " ^ s) v
  else v

let pr2, pr2_once = Common.mk_pr2_wrappers Flag_parsing_c.verbose_parsing

(*****************************************************************************)
(* Parse helpers functions *)
(*****************************************************************************)

(*-------------------------------------------------------------------------- *)
(* Type related *)
(*-------------------------------------------------------------------------- *)

type shortLong      = Short  | Long | LongLong

type decl = {
  storageD: storagebis wrap;
  typeD: ((sign option) * (shortLong option) * (typeCbis option)) wrap;
  qualifD: typeQualifierbis wrap;
  inlineD: bool             wrap;
  (* note: have a full_info: parse_info list; to remember ordering
   * between storage, qualifier, type ? well this info is already in
   * the Ast_c.info, just have to sort them to get good order *)
}

let nullDecl = {
  storageD = NoSto, [];
  typeD = (None, None, None), [];
  qualifD = nullQualif;
  inlineD = false, [];
}
let fake_pi = Common.fake_parse_info

let addStorageD  = function
  | ((x,ii), ({storageD = (NoSto,[])} as v)) -> { v with storageD = (x, [ii]) }
  | ((x,ii), ({storageD = (y, ii2)} as v)) ->
      if x =*= y then warning "duplicate storage classes" v
      else raise (Semantic ("multiple storage classes", fake_pi))

let addInlineD  = function
  | ((true,ii), ({inlineD = (false,[])} as v)) -> { v with inlineD=(true,[ii])}
  | ((true,ii), ({inlineD = (true, ii2)} as v)) -> warning "duplicate inline" v
  | _ -> raise Impossible


let addTypeD     = function
  | ((Left3 Signed,ii)   ,({typeD = ((Some Signed,  b,c),ii2)} as v)) ->
      warning "duplicate 'signed'"   v
  | ((Left3 UnSigned,ii) ,({typeD = ((Some UnSigned,b,c),ii2)} as v)) ->
      warning "duplicate 'unsigned'" v
  | ((Left3 _,ii),        ({typeD = ((Some _,b,c),ii2)} as _v)) ->
      raise (Semantic ("both signed and unsigned specified", fake_pi))
  | ((Left3 x,ii),        ({typeD = ((None,b,c),ii2)} as v))   ->
      {v with typeD = (Some x,b,c),ii ++ ii2}

  | ((Middle3 Short,ii),  ({typeD = ((a,Some Short,c),ii2)} as v)) ->
      warning "duplicate 'short'" v


  (* gccext: long long allowed *)
  | ((Middle3 Long,ii),   ({typeD = ((a,Some Long ,c),ii2)} as v)) ->
      { v with typeD = (a, Some LongLong, c),ii++ii2 }
  | ((Middle3 Long,ii),   ({typeD = ((a,Some LongLong ,c),ii2)} as v)) ->
      warning "triplicate 'long'" v


  | ((Middle3 _,ii),      ({typeD = ((a,Some _,c),ii2)} as _v)) ->
      raise (Semantic ("both long and short specified", fake_pi))
  | ((Middle3 x,ii),      ({typeD = ((a,None,c),ii2)} as v))  ->
      {v with typeD = (a, Some x,c),ii++ii2}

  | ((Right3 t,ii),       ({typeD = ((a,b,Some x),ii2)} as _v)) ->
      raise (Semantic ((Printf.sprintf "two or more data types: t %s ii %s\ntypeD %s ii2 %s\n" (Dumper.dump t) (Dumper.dump ii) (Dumper.dump x) (Dumper.dump ii2)), fake_pi))
  | ((Right3 t,ii),       ({typeD = ((a,b,None),ii2)} as v))   ->
      {v with typeD = (a,b, Some t),ii++ii2}


let addQualif = function
  | ({const=true},   ({const=true} as x)) ->   warning "duplicate 'const'" x
  | ({volatile=true},({volatile=true} as x))-> warning "duplicate 'volatile'" x
  | ({const=true},    v) -> {v with const=true}
  | ({volatile=true}, v) -> {v with volatile=true}
  | _ ->
      internal_error "there is no noconst or novolatile keyword"

let addQualifD ((qu,ii), ({qualifD = (v,ii2)} as x)) =
  { x with qualifD = (addQualif (qu, v),ii::ii2) }


(*-------------------------------------------------------------------------- *)
(* Declaration/Function related *)
(*-------------------------------------------------------------------------- *)


(* stdC: type section, basic integer types (and ritchie)
 * To understand the code, just look at the result (right part of the PM)
 * and go back.
 *)
let (fixDeclSpecForDecl: decl -> (fullType * (storage wrap)))  = function
 {storageD = (st,iist);
  qualifD = (qu,iiq);
  typeD = (ty,iit);
  inlineD = (inline,iinl);
  } ->
   let ty',iit' =
   (match ty with
 | (None,None,None)       ->
     (* generate fake_info, otherwise type_annotater can crash in
      * offset.
      *)
     warning "type defaults to 'int'" (defaultInt, [fakeInfo fake_pi])
 | (None, None, Some t)   -> (t, iit)

 | (Some sign,   None, (None| Some (BaseType (IntType (Si (_,CInt))))))  ->
     BaseType(IntType (Si (sign, CInt))), iit
 | ((None|Some Signed),Some x,(None|Some(BaseType(IntType (Si (_,CInt)))))) ->
     BaseType(IntType (Si (Signed, [Short,CShort; Long, CLong; LongLong, CLongLong] +> List.assoc x))), iit
 | (Some UnSigned, Some x, (None| Some (BaseType (IntType (Si (_,CInt))))))->
     BaseType(IntType (Si (UnSigned, [Short,CShort; Long, CLong; LongLong, CLongLong] +> List.assoc x))), iit
 | (Some sign,   None, (Some (BaseType (IntType CChar))))   ->
     BaseType(IntType (Si (sign, CChar2))), iit
 | (None, Some Long,(Some(BaseType(FloatType CDouble))))    ->
     BaseType (FloatType (CLongDouble)), iit

 | (Some _,_, Some _) ->
     (*mine*)
     raise (Semantic ("signed, unsigned valid only for char and int", fake_pi))
 | (_,Some _,(Some(BaseType(FloatType (CFloat|CLongDouble))))) ->
     raise (Semantic ("long or short specified with floatint type", fake_pi))
 | (_,Some Short,(Some(BaseType(FloatType CDouble)))) ->
     raise (Semantic ("the only valid combination is long double", fake_pi))

 | (_, Some _, Some _) ->
     (* mine *)
     raise (Semantic ("long, short valid only for int or float", fake_pi))

     (* if do short uint i, then gcc say parse error, strange ? it is
      * not a parse error, it is just that we dont allow with typedef
      * either short/long or signed/unsigned. In fact, with
      * parse_typedef_fix2 (with et() and dt()) now I say too parse
      * error so this code is executed only when do short struct
      * {....} and never with a typedef cos now we parse short uint i
      * as short ident ident => parse error (cos after first short i
      * pass in dt() mode) *)

   )
   in
   ((qu, iiq),
   (ty', iit'))
     ,((st, inline),iist++iinl)


let fixDeclSpecForParam = function ({storageD = (st,iist)} as r) ->
  let ((qu,ty) as v,_st) = fixDeclSpecForDecl r in
  match st with
  | (Sto Register) -> (v, true), iist
  | NoSto -> (v, false), iist
  | _ ->
      raise
        (Semantic ("storage class specified for parameter of function",
                  fake_pi))

let fixDeclSpecForMacro = function ({storageD = (st,iist)} as r) ->
  let ((qu,ty) as v,_st) = fixDeclSpecForDecl r in
  match st with
  | NoSto -> v
  | _ ->
      raise
        (Semantic ("storage class specified for macro type decl",
                  fake_pi))


let fixDeclSpecForFuncDef x =
  let (returnType,storage) = fixDeclSpecForDecl x in
  (match fst (unwrap storage) with
  | StoTypedef ->
      raise (Semantic ("function definition declared 'typedef'", fake_pi))
  | _ -> (returnType, storage)
  )


(* parameter: (this is the context where we give parameter only when
 * in func DEFINITION not in funct DECLARATION) We must have a name.
 * This function ensure that we give only parameterTypeDecl with well
 * formed Classic constructor todo?: do we accept other declaration
 * in ? so I must add them to the compound of the deffunc. I dont
 * have to handle typedef pb here cos C forbid to do VF f { ... }
 * with VF a typedef of func cos here we dont see the name of the
 * argument (in the typedef)
 *)
let (fixOldCDecl: fullType -> fullType) = fun ty ->
  match Ast_c.unwrap_typeC ty with
  | FunctionType (fullt, (params, (b, iib))) ->

      (* stdC: If the prototype declaration declares a parameter for a
       * function that you are defining (it is part of a function
       * definition), then you must write a name within the declarator.
       * Otherwise, you can omit the name. *)
      (match params with
      | [{p_namei = None; p_type = ty2},_] ->
          (match Ast_c.unwrap_typeC ty2 with
          | BaseType Void ->
              ty
          | _ ->
              pr2_once ("SEMANTIC:parameter name omitted, but I continue");
              ty
          )

      | params ->
          (params +> List.iter (fun (param,_) ->
            match param with
            | {p_namei = None} ->
              (* if majuscule, then certainly macro-parameter *)
                pr2_once ("SEMANTIC:parameter name omitted, but I continue");
	    | _ -> ()
          ));
          ty
      )

        (* todo? can we declare prototype in the decl or structdef,
           ... => length <> but good kan meme *)
  | _ ->
      (* gcc say parse error but dont see why *)
      raise (Semantic ("seems this is not a function", fake_pi))


let fixFunc (typ, compound, old_style_opt) =
  let (cp,iicp) = compound in

  let (name, ty,   (st,iist),  attrs) = typ in

  let (qu, tybis) = ty in

  match Ast_c.unwrap_typeC ty with
  | FunctionType (fullt, (params,abool)) ->
      let iifunc = Ast_c.get_ii_typeC_take_care tybis in

      let iistart = Ast_c.fakeInfo () in
      assert (qu =*= nullQualif);

      (match params with
      | [{p_namei= None; p_type = ty2}, _] ->
          (match Ast_c.unwrap_typeC ty2 with
          | BaseType Void ->  ()
          | _ ->
                (* failwith "internal errror: fixOldCDecl not good" *)
              ()
          )
      | params ->
          params +> List.iter (function
          | ({p_namei = Some s}, _) -> ()
	  | _ -> ()
                (* failwith "internal errror: fixOldCDecl not good" *)
          )
      );
      (* bugfix: cf tests_c/function_pointer4.c.
       * Apparemment en C on peut syntaxiquement ecrire ca:
       *
       *   void a(int)(int x);
       * mais apres gcc gueule au niveau semantique avec:
       *   xxx.c:1: error: 'a' declared as function returning a function
       * Je ne faisais pas cette verif. Sur du code comme
       *   void METH(foo)(int x) { ...} , le parser croit (a tort) que foo
       * est un typedef, et donc c'est parsé comme l'exemple precedent,
       * ce qui ensuite confuse l'unparser qui n'est pas habitué
       * a avoir dans le returnType un FunctionType et qui donc
       * pr_elem les ii dans le mauvais sens ce qui genere au final
       * une exception. Hence this fix to at least detect the error
       * at parsing time (not unparsing time).
       *)
      (match Ast_c.unwrap_typeC fullt with
      | FunctionType _ ->
          let s = Ast_c.str_of_name name in
          let iis = Ast_c.info_of_name name in
          pr2 (spf "WEIRD: %s declared as function returning a function." s);
          pr2 (spf "This is probably because of a macro. Extend standard.h");
          raise (Semantic (spf "error: %s " s, Ast_c.parse_info_of_info iis))
      | _ -> ()
      );

      (* it must be nullQualif,cos parser construct only this*)
      {f_name = name;
       f_type = (fullt, (params, abool));
       f_storage = st;
       f_body = cp;
       f_attr = attrs;
       f_old_c_style = old_style_opt;
      },
      (iifunc++iicp++[iistart]++iist)
  | _ ->
      raise
        (Semantic
            ("you are trying to do a function definition but you dont give " ^
             "any parameter", fake_pi))


(*-------------------------------------------------------------------------- *)
(* parse_typedef_fix2 *)
(*-------------------------------------------------------------------------- *)

let dt s () =
  if !Flag_parsing_c.debug_etdt then pr2 ("<" ^ s);
  LP.disable_typedef ()

let et s () =
  if !Flag_parsing_c.debug_etdt then pr2 (">" ^ s);
  LP.enable_typedef ()


let fix_add_params_ident x =
  let (s, ty, st, _attrs) = x in
  match Ast_c.unwrap_typeC ty with
  | FunctionType (fullt, (params, bool)) ->

      (match params with
      | [{p_namei=None; p_type=ty2}, _] ->
          (match Ast_c.unwrap_typeC ty2 with
          | BaseType Void -> ()
          | _ ->
              (* failwith "internal errror: fixOldCDecl not good" *)
              ()
          )
      | params ->
          params +> List.iter (function
          | ({p_namei= Some name}, _) ->
              LP.add_ident (Ast_c.str_of_name s)
	  | _ ->
              ()
                (* failwith "internal errror: fixOldCDecl not good" *)
          )
      )
  | _ -> ()



(*-------------------------------------------------------------------------- *)
(* shortcuts *)
(*-------------------------------------------------------------------------- *)

let mk_e e ii = Ast_c.mk_e e ii

let mk_string_wrap (s,info) = (s, [info])

%}

/*(*****************************************************************************)*/
/*(* Tokens *)*/
/*(*************************************************************************)*/

/*
(*
 * Some tokens are not even used in this file because they are filtered
 * in some intermediate phase. But they still must be declared because
 * ocamllex may generate them, or some intermediate phase may also
 * generate them (like some functions in parsing_hacks.ml)
 *)
*/

%token <Ast_c.info> TUnknown /*(* unrecognized token *)*/

/*(* coupling: Token_helpers.is_real_comment *)*/
%token <Ast_c.info> TCommentSpace TCommentNewline   TComment

/*(*-----------------------------------------*)*/
/*(* the normal tokens *)*/
/*(*-----------------------------------------*)*/

%token <(string * (Ast_c.sign * Ast_c.base)) * Ast_c.info> TInt
%token <(string * Ast_c.floatType) * Ast_c.info> TFloat
%token <(string * Ast_c.isWchar) * Ast_c.info>   TChar
%token <(string * Ast_c.isWchar) * Ast_c.info>   TString

%token <string * Ast_c.info> TIdent
%token <string * Ast_c.info> TKRParam
%token <string * Ast_c.info> Tconstructorname /* parsing_hack for c++ */
/*(* appears mostly after some fix_xxx in parsing_hack *)*/
%token <string * Ast_c.info> TypedefIdent


/*
(* Some tokens like TOPar and TCPar are used as synchronisation stuff,
 * in parsing_hack.ml. So if define special tokens like TOParDefine and
 * TCParEOL, then take care to also modify in Token_helpers.
 *)
*/

%token <Ast_c.info> TOPar TCPar TOBrace TCBrace TOCro TCCro
%token <Ast_c.info> TDot TComma TPtrOp
%token <Ast_c.info> TInc TDec
%token <Ast_c.assignOp * Ast_c.info> TAssign
%token <Ast_c.info> TEq
%token <Ast_c.info> TWhy  TTilde TBang
%token <Ast_c.info> TEllipsis
%token <Ast_c.info> TDotDot

%token <Ast_c.info> TPtVirg
%token <Ast_c.info>
       TOrLog TAndLog TOr TXor TAnd  TEqEq TNotEq TInf TSup TInfEq TSupEq
       TShl TShr
       TPlus TMinus TMul TDiv TMod

%token <Ast_c.info>
       Tchar Tshort Tint Tdouble Tfloat Tlong Tunsigned Tsigned Tvoid
       Tsize_t Tssize_t Tptrdiff_t
       Tauto Tregister Textern Tstatic
       Ttypedef
       Tconst Tvolatile
       Tstruct Tunion Tenum
       Tbreak Telse Tswitch Tcase Tcontinue Tfor Tdo Tif  Twhile Treturn
       Tgoto Tdefault
       Tsizeof Tnew Tdelete TOParCplusplusInit

/*(* C99 *)*/
%token <Ast_c.info>
       Trestrict

/*(*-----------------------------------------*)*/
/*(* gccext: extra tokens *)*/
/*(*-----------------------------------------*)*/
%token <Ast_c.info> Tasm
%token <Ast_c.info> Tattribute
%token <Ast_c.info> TattributeNoarg
%token <Ast_c.info> Tinline
%token <Ast_c.info> Ttypeof

/*(*-----------------------------------------*)*/
/*(* cppext: extra tokens *)*/
/*(*-----------------------------------------*)*/
/*(* coupling with Token_helpers.is_cpp_token *)*/


/*(*---------------*)*/
/*(* define        *)*/
/*(*---------------*)*/

%token <Ast_c.info> TDefine
%token <(string * Ast_c.info)> TDefParamVariadic

/*(* disappear after fix_tokens_define *)*/
%token <Ast_c.info> TCppEscapedNewline

%token <Ast_c.info> TCppConcatOp

/*(* appear    after fix_tokens_define *)*/
%token <Ast_c.info> TOParDefine
%token <Ast_c.info> TOBraceDefineInit

%token <(string * Ast_c.info)> TIdentDefine /*(* same *)*/
%token <Ast_c.info>            TDefEOL      /*(* same *)*/


/*(*---------------*)*/
/*(* include       *)*/
/*(*---------------*)*/


/*(* used only in lexer_c, then transformed in comment or splitted in tokens *)*/
%token <(string * string * bool ref * Ast_c.info)> TInclude

/*(* tokens coming from above, generated in parse_c from TInclude, etc *)*/
%token <(Ast_c.info * bool ref)> TIncludeStart
%token <(string * Ast_c.info)> TIncludeFilename


/*(*---------------*)*/
/*(* ifdef         *)*/
/*(*---------------*)*/

/*(* coupling: Token_helpers.is_cpp_instruction *)*/
%token <((int * int) option ref * Ast_c.info)>
  TIfdef TIfdefelse TIfdefelif TEndif
%token <(bool * (int * int) option ref * Ast_c.info)>
  TIfdefBool TIfdefMisc TIfdefVersion

/*(*---------------*)*/
/*(* other         *)*/
/*(*---------------*)*/

%token <Ast_c.info> TUndef

%token <Ast_c.info> TCppDirectiveOther

/*(*---------------*)*/
/*(* macro use     *)*/
/*(*---------------*)*/

/*(* appear  after fix_tokens_cpp, cf also parsing_hacks#hint *)*/

%token <(string * Ast_c.info)>            TMacroAttr
%token <(string * Ast_c.info)>            TMacroStmt
%token <(string * Ast_c.info)> TMacroIdentBuilder
/*(* no need value for the moment *)*/
%token <(string * Ast_c.info)>            TMacroString
%token <(string * Ast_c.info)> TMacroDecl
%token <Ast_c.info>            TMacroDeclConst

%token <(string * Ast_c.info)> TMacroIterator
/*(*
%token <(string * Ast_c.info)> TMacroTop
%token <(string * Ast_c.info)> TMacroStructDecl
*)*/

%token <(string * Ast_c.info)>            TMacroAttrStorage


/*(*---------------*)*/
/*(* other         *)*/
/*(*---------------*)*/


/*(* should disappear after parsing_hack *)*/
%token <Ast_c.info> TCommentSkipTagStart TCommentSkipTagEnd


/*(* appear after parsing_hack *)*/
%token <Ast_c.info> TCParEOL

%token <Ast_c.info> TAction


/*(* TCommentMisc still useful ? obsolete ? *)*/
%token <Ast_c.info> TCommentMisc
%token <(Token_c.cppcommentkind * Ast_c.info)> TCommentCpp


/*(*-----------------------------------------*)*/
%token <Ast_c.info> EOF

/*(*-----------------------------------------*)*/

/*(* must be at the top so that it has the lowest priority *)*/
%nonassoc SHIFTHERE

%nonassoc Telse

%left TOrLog
%left TAndLog
%left TOr
%left TXor
%left TAnd
%left TEqEq TNotEq
%left TInf TSup TInfEq TSupEq
%left TShl TShr
%left TPlus TMinus
%left TMul TDiv TMod

/*(*************************************************************************)*/
/*(* Rules type declaration *)*/
/*(*************************************************************************)*/

%start main celem statement expr type_name
%type <Ast_c.program> main
%type <Ast_c.toplevel> celem

%type <Ast_c.statement> statement
%type <Ast_c.expression> expr
%type <Ast_c.fullType> type_name

%%
/*(*************************************************************************)*/
/*
(* TOC:
 * toplevel (obsolete)
 *
 * ident
 * expression
 * statement
 * types with
 *   - left part (type_spec, qualif),
 *   - right part (declarator, abstract declarator)
 *   - aux part (parameters)
 * declaration, storage, initializers
 * struct
 * enum
 * cpp directives
 * celem (=~ main)
 *
 * generic workarounds (obrace, cbrace for context setting)
 * xxx_list, xxx_opt
 *)
*/
/*(*************************************************************************)*/

/*(*************************************************************************)*/
/*(* toplevel *)*/
/*(*************************************************************************)*/
/*(* no more used; now that use error recovery *)*/

main:
 translation_unit EOF     { $1 }

translation_unit:
 | external_declaration
     { !LP._lexer_hint.context_stack <- [LP.InTopLevel];   [$1] }
 | translation_unit external_declaration
     { !LP._lexer_hint.context_stack <- [LP.InTopLevel]; $1 ++ [$2] }



/*(*************************************************************************)*/
/*(* ident *)*/
/*(*************************************************************************)*/

/*(* Why this ? Why not s/ident/TIdent ? cos there is multiple namespaces in C,
   * so a label can have the same name that a typedef, same for field and tags
   * hence sometimes the use of ident  instead of TIdent.
   *)*/
ident:
 | TIdent       { $1 }
 | TypedefIdent { $1 }


identifier:
 | TIdent       { $1 }

/*
(* cppext: string concatenation of idents
 * also cppext: gccext: ##args for variadic macro
 *)
*/
identifier_cpp:
 | TIdent
     { RegularName (mk_string_wrap $1) }
 | ident_extra_cpp { $1 }

ident_cpp:
 | TIdent
     { RegularName (mk_string_wrap $1) }
 | TypedefIdent
     { RegularName (mk_string_wrap $1) }
 | ident_extra_cpp { $1 }

ident_extra_cpp:
 | TIdent TCppConcatOp identifier_cpp_list
     {
       CppConcatenatedName (
         match $3 with
         | [] -> raise Impossible
         | (x,concatnull)::xs ->
             assert(null concatnull);
             (mk_string_wrap $1, [])::(x,[$2])::xs
       )
   }
 | TCppConcatOp TIdent
     { CppVariadicName (fst $2, [$1; snd $2]) }
 | TMacroIdentBuilder TOPar param_define_list TCPar
     { CppIdentBuilder ((fst $1, [snd $1;$2;$4]), $3) }

identifier_cpp_list:
 | TIdent { [mk_string_wrap $1, []] }
 | identifier_cpp_list TCppConcatOp TIdent { $1 ++ [mk_string_wrap $3, [$2]] }

/*(*************************************************************************)*/
/*(* expr *)*/
/*(*************************************************************************)*/

expr:
 | assign_expr             { $1 }
 | expr TComma assign_expr { mk_e (Sequence ($1,$3)) [$2] }

/*(* bugfix: in C grammar they put unary_expr, but in fact it must be
   * cast_expr, otherwise (int * ) xxx = &yy; is not allowed
   *)*/
assign_expr:
 | cond_expr                     { $1 }
 | cast_expr TAssign assign_expr { mk_e(Assignment ($1,fst $2,$3)) [snd $2]}
 | cast_expr TEq     assign_expr { mk_e(Assignment ($1,SimpleAssign,$3)) [$2]}

/*(* gccext: allow optional then part hence gcc_opt_expr
   * bugfix: in C grammar they put TDotDot cond_expr, but in fact it must be
   * assign_expr, otherwise   pnp ? x : x = 0x388  is not allowed
   *)*/
cond_expr:
 | arith_expr
     { $1 }
 | arith_expr TWhy gcc_opt_expr TDotDot assign_expr
     { mk_e (CondExpr ($1,$3,$5)) [$2;$4] }


arith_expr:
 | cast_expr                     { $1 }
 | arith_expr TMul    arith_expr { mk_e(Binary ($1, Arith Mul,      $3)) [$2] }
 | arith_expr TDiv    arith_expr { mk_e(Binary ($1, Arith Div,      $3)) [$2] }
 | arith_expr TMod    arith_expr { mk_e(Binary ($1, Arith Mod,      $3)) [$2] }
 | arith_expr TPlus   arith_expr { mk_e(Binary ($1, Arith Plus,     $3)) [$2] }
 | arith_expr TMinus  arith_expr { mk_e(Binary ($1, Arith Minus,    $3)) [$2] }
 | arith_expr TShl    arith_expr { mk_e(Binary ($1, Arith DecLeft,  $3)) [$2] }
 | arith_expr TShr    arith_expr { mk_e(Binary ($1, Arith DecRight, $3)) [$2] }
 | arith_expr TInf    arith_expr { mk_e(Binary ($1, Logical Inf,    $3)) [$2] }
 | arith_expr TSup    arith_expr { mk_e(Binary ($1, Logical Sup,    $3)) [$2] }
 | arith_expr TInfEq  arith_expr { mk_e(Binary ($1, Logical InfEq,  $3)) [$2] }
 | arith_expr TSupEq  arith_expr { mk_e(Binary ($1, Logical SupEq,  $3)) [$2] }
 | arith_expr TEqEq   arith_expr { mk_e(Binary ($1, Logical Eq,     $3)) [$2] }
 | arith_expr TNotEq  arith_expr { mk_e(Binary ($1, Logical NotEq,  $3)) [$2] }
 | arith_expr TAnd    arith_expr { mk_e(Binary ($1, Arith And,      $3)) [$2] }
 | arith_expr TOr     arith_expr { mk_e(Binary ($1, Arith Or,       $3)) [$2] }
 | arith_expr TXor    arith_expr { mk_e(Binary ($1, Arith Xor,      $3)) [$2] }
 | arith_expr TAndLog arith_expr { mk_e(Binary ($1, Logical AndLog, $3)) [$2] }
 | arith_expr TOrLog  arith_expr { mk_e(Binary ($1, Logical OrLog,  $3)) [$2] }

cast_expr:
 | unary_expr                        { $1 }
 | topar2 type_name tcpar2 cast_expr { mk_e(Cast ($2, $4)) [$1;$3] }

unary_expr:
 | postfix_expr                    { $1 }
 | TInc unary_expr                 { mk_e(Infix ($2, Inc))    [$1] }
 | TDec unary_expr                 { mk_e(Infix ($2, Dec))    [$1] }
 | unary_op cast_expr              { mk_e(Unary ($2, fst $1)) [snd $1] }
 | Tsizeof unary_expr              { mk_e(SizeOfExpr ($2))    [$1] }
 | Tsizeof topar2 type_name tcpar2 { mk_e(SizeOfType ($3))    [$1;$2;$4] }
 | Tnew new_argument               { mk_e(New $2)             [$1] }
 | Tdelete cast_expr               { mk_e(Delete $2)          [$1] }

new_argument:
 | TIdent TOPar argument_list_ne TCPar
     { let fn = mk_e(Ident (RegularName (mk_string_wrap $1))) [] in
       Left (mk_e(FunCall (fn, $3)) [$2;$4]) }
 | TIdent TOPar TCPar
     { let fn = mk_e(Ident (RegularName (mk_string_wrap $1))) [] in
       Left(mk_e(FunCall (fn, [])) [$2;$3]) }
 | TypedefIdent TOPar argument_list_ne TCPar
     { let fn = mk_e(Ident (RegularName (mk_string_wrap $1))) [] in
       Left (mk_e(FunCall (fn, $3)) [$2;$4]) }
 | TypedefIdent TOPar TCPar
     { let fn = mk_e(Ident (RegularName (mk_string_wrap $1))) [] in
       Left (mk_e(FunCall (fn, [])) [$2;$3]) }
 | type_spec
     { let ty = addTypeD ($1,nullDecl) in
       let ((returnType,hasreg), iihasreg) = fixDeclSpecForParam ty in
       Right (ArgType { p_namei = None; p_type = returnType;
			p_register = hasreg, iihasreg;
		      } )
     }
 | new_argument TOCro expr TCCro
     {
       match $1 with
	 Left(e) -> Left(mk_e(ArrayAccess (e, $3)) [$2;$4])
       | Right(ArgType(ty)) -> (* lots of hacks to make the right type *)
	   let fty = mk_ty (Array (Some $3, ty.Ast_c.p_type)) [$2;$4] in
	   let pty = { ty with p_type = fty } in
	   Right(ArgType pty)
       | _ -> raise Impossible
     } 

unary_op:
 | TAnd   { GetRef,     $1 }
 | TMul   { DeRef,      $1 }
 | TPlus  { UnPlus,     $1 }
 | TMinus { UnMinus,    $1 }
 | TTilde { Tilde,      $1 }
 | TBang  { Not,        $1 }
 /*(* gccext: have that a lot in old kernel to get address of local label.
    * cf gcc manual "local labels as values".
    *)*/
 | TAndLog { GetRefLabel, $1 }

postfix_expr:
 | primary_expr               { $1 }
 | postfix_expr TOCro expr TCCro
     { mk_e(ArrayAccess ($1, $3)) [$2;$4] }
 | postfix_expr TOPar argument_list_ne TCPar
     { mk_e(FunCall ($1, $3)) [$2;$4] }
 | postfix_expr TOPar  TCPar  { mk_e(FunCall ($1, [])) [$2;$3] }
 | postfix_expr TDot   ident_cpp { mk_e(RecordAccess   ($1,$3)) [$2] }
 | postfix_expr TPtrOp ident_cpp { mk_e(RecordPtAccess ($1,$3)) [$2] }
 | postfix_expr TInc          { mk_e(Postfix ($1, Inc)) [$2] }
 | postfix_expr TDec          { mk_e(Postfix ($1, Dec)) [$2] }

 /*(* gccext: also called compound literals *)*/
 | topar2 type_name tcpar2 TOBrace TCBrace
     { mk_e(Constructor ($2, (InitList [], [$4;$5]))) [$1;$3] }
 | topar2 type_name tcpar2 TOBrace initialize_list gcc_comma_opt TCBrace
     { mk_e(Constructor ($2, (InitList (List.rev $5),[$4;$7]++$6))) [$1;$3] }


primary_expr:
 | identifier_cpp  { mk_e(Ident  ($1)) [] }
 | TInt
    { let (str,(sign,base)) = fst $1 in
      mk_e(Constant (Int (str,Si(sign,base)))) [snd $1] }
 | TFloat  { mk_e(Constant (Float  (fst $1))) [snd $1] }
 | TString { mk_e(Constant (String (fst $1))) [snd $1] }
 | TChar   { mk_e(Constant (Char   (fst $1))) [snd $1] }
 | TOPar expr TCPar { mk_e(ParenExpr ($2)) [$1;$3] }  /*(* forunparser: *)*/

 /*(* gccext: cppext: TODO better ast ? *)*/
 | TMacroString { mk_e(Constant (MultiString [fst $1])) [snd $1] }
 | string_elem string_list
     { mk_e(Constant (MultiString ["TODO: MultiString"])) ($1 ++ $2) }

 /*(* gccext: allow statement as expressions via ({ statement }) *)*/
 | TOPar compound TCPar  { mk_e(StatementExpr ($2)) [$1;$3] }



/*(*----------------------------*)*/
/*(* cppext: *)*/
/*(*----------------------------*)*/

/*(* cppext: *)*/
/*(* to avoid conflicts have to introduce a _not_empty (ne) version *)*/
argument_ne:
 | assign_expr { Left $1 }
 | parameter_decl { Right (ArgType $1)  }
 | action_higherordermacro_ne { Right (ArgAction $1) }


argument:
 | assign_expr { Left $1 }
 | parameter_decl { Right (ArgType $1)  }
 /*(* had conflicts before, but julia fixed them *)*/
 | action_higherordermacro { Right (ArgAction $1) }

action_higherordermacro_ne:
 | taction_list_ne
     { if null $1
       then ActMisc [Ast_c.fakeInfo()]
       else ActMisc $1
     }


action_higherordermacro:
 | taction_list
     { if null $1
       then ActMisc [Ast_c.fakeInfo()]
       else ActMisc $1
     }


/*(*----------------------------*)*/
/*(* workarounds *)*/
/*(*----------------------------*)*/

/*(* would like evalInt $1 but require too much info *)*/
const_expr: cond_expr { $1  }


topar2: TOPar { et "topar2" (); $1  }
tcpar2: TCPar { et "tcpar2" (); $1 (*TODO? et ? sure ? c pas dt plutot ? *) }



/*(*************************************************************************)*/
/*(* statement *)*/
/*(*************************************************************************)*/

statement: statement2 { mk_st (fst $1) (snd $1) }

statement2:
 | labeled         { Labeled      (fst $1), snd $1 }
 | compound        { Compound     (fst $1), snd $1 }
 | expr_statement  { ExprStatement(fst $1), snd $1 }
 | selection       { Selection    (fst $1), snd $1 ++ [fakeInfo()] }
 | iteration       { Iteration    (fst $1), snd $1 ++ [fakeInfo()] }
 | jump TPtVirg    { Jump         (fst $1), snd $1 ++ [$2] }

 /*(* gccext: *)*/
 | Tasm TOPar asmbody TCPar TPtVirg             { Asm $3, [$1;$2;$4;$5] }
 | Tasm Tvolatile TOPar asmbody TCPar TPtVirg   { Asm $4, [$1;$2;$3;$5;$6] }

 /*(* cppext: *)*/
 | TMacroStmt { MacroStmt, [snd $1] }




/*(* note that case 1: case 2: i++;    would be correctly parsed, but with
   * a Case  (1, (Case (2, i++)))  :(
   *)*/
labeled:
 | ident_cpp        TDotDot sw_stat_or_decl   { Label ($1, $3),  [$2] }
 | Tcase const_expr TDotDot sw_stat_or_decl   { Case ($2, $4),       [$1; $3] }
 | Tcase const_expr TEllipsis const_expr TDotDot sw_stat_or_decl
     { CaseRange ($2, $4, $6), [$1;$3;$5] } /*(* gccext: allow range *)*/
 | Tdefault    TDotDot sw_stat_or_decl   { Default $3,             [$1; $2] }

sw_stat_or_decl:
 | decl      { mk_st (Decl ($1 Ast_c.LocalDecl)) Ast_c.noii }
 | statement { $1 }


end_labeled:
 /*(* gccext:  allow toto: }
    * was generating each 30 shift/Reduce conflicts,
    * mais ca va, ca fait ce qu'il faut.
    * update: julia fixed the problem by introducing end_labeled
    * and modifying below stat_or_decl_list
    *)*/
 | ident_cpp            TDotDot
     { Label ($1, (mk_st (ExprStatement None) Ast_c.noii)), [$2] }
 | Tcase const_expr TDotDot
     { Case ($2, (mk_st (ExprStatement None) Ast_c.noii)), [$1;$3] }
 | Tdefault         TDotDot
     { Default (mk_st (ExprStatement None) Ast_c.noii),    [$1; $2] }





compound: tobrace compound2 tcbrace { $2, [$1; $3]  }


/*
(* cppext: because of cpp, some stuff looks like declaration but are in
 * fact statement but too hard to figure out, and if parse them as
 * expression, then we force to have first decls and then exprs, then
 * will have a parse error. So easier to let mix decl/statement.
 * Moreover it helps to not make such a difference between decl and
 * statement for further coccinelle phases to factorize code.
*)*/
compound2:
 |                   { ([]) }
 | stat_or_decl_list { $1 }


stat_or_decl_list:
 | stat_or_decl                   { [$1] }
 /*(* gccext: to avoid conflicts, cf end_labeled above *)*/
 | end_labeled  { [StmtElem (mk_st (Labeled  (fst $1)) (snd $1))] }
 /*(* old: conflicts | stat_or_decl_list stat_or_decl { $1 ++ [$2] } *)*/
 | stat_or_decl stat_or_decl_list { $1 :: $2 }

stat_or_decl:
 | decl      { StmtElem (mk_st (Decl ($1 Ast_c.LocalDecl)) Ast_c.noii) }
 | statement { StmtElem $1 }

  /*(* gccext: *)*/
 | function_definition { StmtElem (mk_st (NestedFunc $1) Ast_c.noii) }

 /* (* cppext: *)*/
 | cpp_directive
     { CppDirectiveStmt $1 }
 | cpp_ifdef_directive/*(* stat_or_decl_list ...*)*/
     { IfdefStmt $1 }


expr_statement:
 | TPtVirg      { None,    [$1] }
 | expr TPtVirg { Some $1, [$2] }

selection:
 | Tif TOPar expr TCPar statement              %prec SHIFTHERE
     { If ($3, $5, (mk_st (ExprStatement None) Ast_c.noii)),   [$1;$2;$4] }
 | Tif TOPar expr TCPar statement Telse statement
     { If ($3, $5, $7),  [$1;$2;$4;$6] }
 | Tswitch TOPar expr TCPar statement
     { Switch ($3,$5),   [$1;$2;$4]  }

iteration:
 | Twhile TOPar expr TCPar statement
     { While ($3,$5),                [$1;$2;$4] }
 | Tdo statement Twhile TOPar expr TCPar TPtVirg
     { DoWhile ($2,$5),              [$1;$3;$4;$6;$7] }
 | Tfor TOPar expr_statement expr_statement TCPar statement
     { For ($3,$4,(None, []),$6),    [$1;$2;$5]}
 | Tfor TOPar expr_statement expr_statement expr TCPar statement
     { For ($3,$4,(Some $5, []),$7), [$1;$2;$6] }
 /*(* c++ext: for(int i = 0; i < n; i++)*)*/
 | Tfor TOPar decl expr_statement expr_opt TCPar statement
     {
       (* pr2 "DECL in for"; *)
       MacroIteration ("toto", [], $7),[$1;$2;$6] (* TODOfake ast, TODO need decl2 ? *)
     }
 /*(* cppext: *)*/
 | TMacroIterator TOPar argument_list_ne TCPar statement
     { MacroIteration (fst $1, $3, $5), [snd $1;$2;$4] }
 | TMacroIterator TOPar TCPar statement
     { MacroIteration (fst $1, [], $4), [snd $1;$2;$3] }

/*(* the ';' in the caller grammar rule will be appended to the infos *)*/
jump:
 | Tgoto ident_cpp  { Goto ($2),  [$1] }
 | Tcontinue    { Continue,       [$1] }
 | Tbreak       { Break,          [$1] }
 | Treturn      { Return,         [$1] }
 | Treturn expr { ReturnExpr $2,  [$1] }
 | Tgoto TMul expr { GotoComputed $3, [$1;$2] }



/*(*----------------------------*)*/
/*(* gccext: *)*/
/*(*----------------------------*)*/
string_elem:
 | TString { [snd $1] }
 /*(* cppext:  ex= printk (KERN_INFO "xxx" UTS_RELEASE)  *)*/
 | TMacroString { [snd $1] }


asmbody:
 | string_list colon_asm_list  { $1, $2 }
 | string_list { $1, [] } /*(* in old kernel *)*/


colon_asm: TDotDot colon_option_list { Colon $2, [$1]   }

colon_option:
 | TString                      { ColonMisc, [snd $1] }
 | TString TOPar asm_expr TCPar { ColonExpr $3, [snd $1; $2;$4] }
 /*(* cppext: certainly a macro *)*/
 | TOCro identifier TCCro TString TOPar asm_expr TCPar
     { ColonExpr $6, [$1;snd $2;$3;snd $4; $5; $7 ] }
 | identifier                       { ColonMisc, [snd $1] }
 | /*(* empty *)*/                  { ColonMisc, [] }

asm_expr: assign_expr { $1 }

/*(*************************************************************************)*/
/*(* types *)*/
/*(*************************************************************************)*/


/*(*-----------------------------------------------------------------------*)*/
/*(* Type spec, left part of a type *)*/
/*(*-----------------------------------------------------------------------*)*/
type_spec2:
 | Tvoid                { Right3 (BaseType Void),            [$1] }
 | Tchar                { Right3 (BaseType (IntType CChar)), [$1]}
 | Tint                 { Right3 (BaseType (IntType (Si (Signed,CInt)))), [$1]}
 | Tfloat               { Right3 (BaseType (FloatType CFloat)),  [$1]}
 | Tdouble              { Right3 (BaseType (FloatType CDouble)), [$1] }
 | Tsize_t              { Right3 (BaseType SizeType),            [$1] }
 | Tssize_t             { Right3 (BaseType SSizeType),           [$1] }
 | Tptrdiff_t           { Right3 (BaseType PtrDiffType),         [$1] }
 | Tshort               { Middle3 Short,  [$1]}
 | Tlong                { Middle3 Long,   [$1]}
 | Tsigned              { Left3 Signed,   [$1]}
 | Tunsigned            { Left3 UnSigned, [$1]}
 | struct_or_union_spec { Right3 (fst $1), snd $1 }
 | enum_spec            { Right3 (fst $1), snd $1 }

 /*
 (* parse_typedef_fix1: cant put: TIdent {} cos it make the grammar
  * ambiguous, generates lots of conflicts => we must
  * use some tricks: we make the lexer and parser cooperate, cf lexerParser.ml.
  *
  * parse_typedef_fix2: this is not enough, and you must use
  * parse_typedef_fix2 to fully manage typedef problems in grammar.
  *
  * parse_typedef_fix3:
  *
  * parse_typedef_fix4: try also to do now some consistency checking in
  * Parse_c
  *)*/
 | TypedefIdent
     { let name = RegularName (mk_string_wrap $1) in
       Right3 (TypeName (name, Ast_c.noTypedefDef())),[] }

 | Ttypeof TOPar assign_expr TCPar { Right3 (TypeOfExpr ($3)), [$1;$2;$4] }
 | Ttypeof TOPar type_name   TCPar { Right3 (TypeOfType ($3)), [$1;$2;$4] }

/*(*----------------------------*)*/
/*(* workarounds *)*/
/*(*----------------------------*)*/

type_spec: type_spec2    { dt "type" (); $1   }

/*(*-----------------------------------------------------------------------*)*/
/*(* Qualifiers *)*/
/*(*-----------------------------------------------------------------------*)*/

type_qualif:
 | Tconst    { {const=true  ; volatile=false}, $1 }
 | Tvolatile { {const=false ; volatile=true},  $1 }
 /*(* C99 *)*/
 | Trestrict { (* TODO *) {const=false ; volatile=false},  $1 }


/*(*-----------------------------------------------------------------------*)*/
/*(* gccext: attributes  *)*/
/*(*-----------------------------------------------------------------------*)*/

attribute:
 | Tattribute TOPar /*stuff*/ TCPar { raise Todo }
 /*(* cppext: *)*/
 | TMacroAttr { Attribute (fst $1), [snd $1] }

attribute_storage:
 | TMacroAttrStorage { $1 }

type_qualif_attr:
 | type_qualif { $1 }
/*(*TODO !!!!! *)*/
 | TMacroAttr { {const=true  ; volatile=false}, snd $1   }

/*(*-----------------------------------------------------------------------*)*/
/*(* Declarator, right part of a type + second part of decl (the ident)  *)*/
/*(*-----------------------------------------------------------------------*)*/

/*
(* declarator return a couple:
 *  (name, partial type (a function to be applied to return type))
 *
 * when int* f(int) we must return Func(Pointer int,int) and not
 * Pointer (Func(int,int)
 *)*/

declarator:
 | pointer direct_d { (fst $2, fun x -> x +> $1 +> (snd $2)  ) }
 | direct_d         { $1  }

/*(* so must do  int * const p; if the pointer is constant, not the pointee *)*/
pointer:
 | tmul                   { fun x -> mk_ty (Pointer x) [$1] }
 | tmul pointer           { fun x -> mk_ty (Pointer ($2 x)) [$1] }
 | tmul type_qualif_list
     { fun x -> ($2.qualifD, mk_tybis (Pointer x) [$1])}
 | tmul type_qualif_list pointer
     { fun x -> ($2.qualifD, mk_tybis (Pointer ($3 x)) [$1]) }

tmul:
   TMul { $1 }
 | TAnd
     { if !Flag.c_plus_plus
     then $1
     else
       let i = Ast_c.parse_info_of_info $1 in
       raise (Semantic("& not allowed in C types, try -c++ option", i)) }


direct_d:
 | identifier_cpp
     { ($1, fun x -> x) }
 | TOPar declarator TCPar      /*(* forunparser: old: $2 *)*/
     { (fst $2, fun x -> mk_ty (ParenType ((snd $2) x)) [$1;$3]) }
 | direct_d tocro            tccro
     { (fst $1,fun x->(snd $1) (mk_ty (Array (None,x)) [$2;$3])) }
 | direct_d tocro const_expr tccro
     { (fst $1,fun x->(snd $1) (mk_ty (Array (Some $3,x)) [$2;$4])) }
 | direct_d topar            tcpar
     { (fst $1,
       fun x->(snd $1)
         (mk_ty (FunctionType (x,(([],(false, []))))) [$2;$3]))
     }
 | direct_d topar parameter_type_list tcpar
     { (fst $1,fun x->(snd $1)
       (mk_ty (FunctionType (x, $3)) [$2;$4]))
     }


/*(*----------------------------*)*/
/*(* workarounds *)*/
/*(*----------------------------*)*/

tocro: TOCro { et "tocro" ();$1 }
tccro: TCCro { dt "tccro" ();$1 }

/*(*-----------------------------------------------------------------------*)*/
abstract_declarator:
 | pointer                            { $1 }
 |         direct_abstract_declarator { $1 }
 | pointer direct_abstract_declarator { fun x -> x +> $2 +> $1 }

direct_abstract_declarator:
 | TOPar abstract_declarator TCPar /*(* forunparser: old: $2 *)*/
     { fun x -> mk_ty (ParenType ($2 x)) [$1;$3] }

 | TOCro            TCCro
     { fun x -> mk_ty (Array (None, x)) [$1;$2] }
 | TOCro const_expr TCCro
     { fun x -> mk_ty (Array (Some $2, x)) [$1;$3] }
 | direct_abstract_declarator TOCro            TCCro
     { fun x -> $1 (mk_ty (Array (None, x))  [$2;$3]) }
 | direct_abstract_declarator TOCro const_expr TCCro
     { fun x -> $1 (mk_ty (Array (Some $3,x))  [$2;$4]) }
 | TOPar TCPar
     { fun x -> mk_ty (FunctionType (x, ([], (false,  [])))) [$1;$2] }
 | topar parameter_type_list tcpar
     { fun x -> mk_ty (FunctionType (x, $2))  [$1;$3] }
/*(* subtle: here must also use topar, not TOPar, otherwise if have for
   * instance   (xxx ( * )(xxx)) cast, then the second xxx may still be a Tident
   * but we want to reduce topar, to set the InParameter so that
   * parsing_hack can get a chance to change the type of xxx into a typedef.
   * That's an example where parsing_hack and the lookahead of ocamlyacc does
   * not go very well together ... we got the info too late. We got
   * a similar pb with xxx xxx; declaration, cf parsing_hack.ml and the
   * "disable typedef cos special case ..." message.
*)*/
 | direct_abstract_declarator topar tcpar
     { fun x -> $1 (mk_ty (FunctionType (x, (([], (false, []))))) [$2;$3]) }
 | direct_abstract_declarator topar parameter_type_list tcpar
     { fun x -> $1 (mk_ty (FunctionType (x, $3)) [$2;$4]) }

/*(*-----------------------------------------------------------------------*)*/
/*(* Parameters (use decl_spec not type_spec just for 'register') *)*/
/*(*-----------------------------------------------------------------------*)*/
parameter_type_list:
 | parameter_list                  { ($1, (false, []))}
 | parameter_list TComma TEllipsis { ($1, (true,  [$2;$3])) }


parameter_decl2:
   TKRParam {
     let name = RegularName (mk_string_wrap $1) in
     LP.add_ident (str_of_name name);
     { p_namei = Some name;
       p_type = mk_ty NoType [];
       p_register = (false, []);
     }
   }
 | decl_spec declaratorp
     { let ((returnType,hasreg),iihasreg) = fixDeclSpecForParam $1 in
       let (name, ftyp) = $2 in
       { p_namei = Some (name);
         p_type = ftyp returnType;
         p_register = (hasreg, iihasreg);
       }
     }
 | decl_spec abstract_declaratorp
     { let ((returnType,hasreg), iihasreg) = fixDeclSpecForParam $1 in
       { p_namei = None;
         p_type = $2 returnType;
         p_register = hasreg, iihasreg;
       }
     }
 | decl_spec
     { let ((returnType,hasreg), iihasreg) = fixDeclSpecForParam $1 in
       { p_namei = None;
         p_type = returnType;
         p_register = hasreg, iihasreg;
       }
     }


/*(*----------------------------*)*/
/*(* workarounds *)*/
/*(*----------------------------*)*/

parameter_decl: parameter_decl2 { et "param" ();  $1 }
 | attributes parameter_decl2 { et "param" (); $2 }

declaratorp:
 | declarator  { LP.add_ident (str_of_name (fst $1)); $1 }
 /*(* gccext: *)*/
 | attributes declarator   { LP.add_ident (str_of_name (fst $2)); $2 }
 | declarator attributes   { LP.add_ident (str_of_name (fst $1)); $1 }

abstract_declaratorp:
 | abstract_declarator { $1 }
 /*(* gccext: *)*/
 | attributes abstract_declarator { $2 }

/*(*-----------------------------------------------------------------------*)*/
/*(* helper type rules *)*/
/*(*-----------------------------------------------------------------------*)*/

/*(* for struct and also typename *)*/
/*(* cant put decl_spec cos no storage is allowed for field struct *)*/
spec_qualif_list2:
 | type_spec                    { addTypeD ($1, nullDecl) }
 | type_qualif                  { {nullDecl with qualifD = (fst $1,[snd $1])}}
 | type_spec   spec_qualif_list { addTypeD ($1,$2)   }
 | type_qualif spec_qualif_list { addQualifD ($1,$2) }

spec_qualif_list: spec_qualif_list2            {  dt "spec_qualif" (); $1 }


/*(* for pointers in direct_declarator and abstract_declarator *)*/
type_qualif_list:
 | type_qualif_attr                  { {nullDecl with qualifD = (fst $1,[snd $1])} }
 | type_qualif_list type_qualif_attr { addQualifD ($2,$1) }






/*(*-----------------------------------------------------------------------*)*/
/*(* xxx_type_id *)*/
/*(*-----------------------------------------------------------------------*)*/

type_name:
 | spec_qualif_list
     { let (returnType, _) = fixDeclSpecForDecl $1 in  returnType }
 | spec_qualif_list abstract_declaratort
     { let (returnType, _) = fixDeclSpecForDecl $1 in $2 returnType }



abstract_declaratort:
 | abstract_declarator { $1 }
 /*(* gccext: *)*/
 | attributes abstract_declarator { $2 }


/*(*************************************************************************)*/
/*(* declaration and initializers *)*/
/*(*************************************************************************)*/

decl2:
 | decl_spec TPtVirg
     { function local ->
       let (returnType,storage) = fixDeclSpecForDecl $1 in
       let iistart = Ast_c.fakeInfo () in
       DeclList ([{v_namei = None; v_type = returnType;
                   v_storage = unwrap storage; v_local = local;
                   v_attr = Ast_c.noattr;
                   v_type_bis = ref None;
                },[]],
                ($2::iistart::snd storage))
     }
 | decl_spec init_declarator_list TPtVirg
     { function local ->
       let (returnType,storage) = fixDeclSpecForDecl $1 in
       let iistart = Ast_c.fakeInfo () in
       DeclList (
         ($2 +> List.map (fun ((((name,f),attrs), ini), iivirg) ->
           let s = str_of_name name in
	   if fst (unwrap storage) =*= StoTypedef
	   then LP.add_typedef s;
           {v_namei = Some (name, ini);
            v_type = f returnType;
            v_storage = unwrap storage;
            v_local = local;
            v_attr = attrs;
            v_type_bis = ref None;
           },
           iivirg
         )
         ),  ($3::iistart::snd storage))
     }
 /*(* cppext: *)*/

 | TMacroDecl TOPar argument_list TCPar TPtVirg
     { function _ ->
       MacroDecl ((fst $1, $3, true), [snd $1;$2;$4;$5;fakeInfo()]) }
 | Tstatic TMacroDecl TOPar argument_list TCPar TPtVirg
     { function _ ->
       MacroDecl ((fst $2, $4, true), [snd $2;$3;$5;$6;fakeInfo();$1]) }
 | Tstatic TMacroDeclConst TMacroDecl TOPar argument_list TCPar TPtVirg
     { function _ ->
       MacroDecl ((fst $3, $5, true), [snd $3;$4;$6;$7;fakeInfo();$1;$2])}


 | TMacroDecl TOPar argument_list TCPar teq initialize TPtVirg
     { function _ ->
       MacroDeclInit ((fst $1, $3, $6), [snd $1;$2;$4;$5;$7;fakeInfo()]) }
 | Tstatic TMacroDecl TOPar argument_list TCPar teq initialize TPtVirg
     { function _ ->
       MacroDeclInit ((fst $2, $4, $7),[snd $2;$3;$5;$6;$8;fakeInfo();$1]) }
 | Tstatic TMacroDeclConst TMacroDecl TOPar argument_list TCPar
     teq initialize TPtVirg
     { function _ ->
       MacroDeclInit
	 ((fst $3, $5, $8), [snd $3;$4;$6;$7;$9;fakeInfo();$1;$2])}


/*(*-----------------------------------------------------------------------*)*/
decl_spec2:
 | storage_class_spec      { {nullDecl with storageD = (fst $1, [snd $1]) } }
 | type_spec               { addTypeD ($1,nullDecl) }
 | type_qualif             { {nullDecl with qualifD  = (fst $1, [snd $1]) } }
 | Tinline                 { {nullDecl with inlineD = (true, [$1]) } }
 | storage_class_spec decl_spec2 { addStorageD ($1, $2) }
 | type_spec          decl_spec2 { addTypeD    ($1, $2) }
 | type_qualif        decl_spec2 { addQualifD  ($1, $2) }
 | Tinline            decl_spec2 { addInlineD ((true, $1), $2) }

/*(* can simplify by putting all in _opt ? must have at least one otherwise
   *  decl_list is ambiguous ? (no cos have ';' between decl)
   *)*/


storage_class_spec2:
 | Tstatic      { Sto Static,  $1 }
 | Textern      { Sto Extern,  $1 }
 | Tauto        { Sto Auto,    $1 }
 | Tregister    { Sto Register,$1 }
 | Ttypedef     { StoTypedef,  $1 }

storage_class_spec:
 /*(* gccext: *)*/
 | storage_class_spec2 { $1 }
 | storage_class_spec2 attribute_storage_list { $1 (* TODO *) }



/*(*----------------------------*)*/
/*(* workarounds *)*/
/*(*----------------------------*)*/

decl:      decl2         { et "decl" (); $1 }
decl_spec: decl_spec2    { dt "declspec" (); $1  }

/*(*-----------------------------------------------------------------------*)*/
/*(* declarators (right part of type and variable) *)*/
/*(*-----------------------------------------------------------------------*)*/
init_declarator2:
 | declaratori                  { ($1, NoInit) }
 | declaratori teq initialize   { ($1, ValInit($2, $3)) }
 /* C++ only */
 | declaratori TOParCplusplusInit argument_list TCPar
     { ($1, ConstrInit($3,[$2;$4])) }


/*(*----------------------------*)*/
/*(* workarounds *)*/
/*(*----------------------------*)*/
teq: TEq  { et "teq" (); $1 }

init_declarator: init_declarator2  { dt "init" (); $1 }


/*(*----------------------------*)*/
/*(* gccext: *)*/
/*(*----------------------------*)*/

declaratori:
 | declarator              { LP.add_ident (str_of_name (fst $1)); $1, Ast_c.noattr }
 /*(* gccext: *)*/
 | declarator gcc_asm_decl { LP.add_ident (str_of_name (fst $1)); $1, Ast_c.noattr }
 /*(* gccext: *)*/
 | attributes declarator   { LP.add_ident (str_of_name (fst $2)); $2, $1 }
 | declarator attributes   { LP.add_ident (str_of_name (fst $1)); $1, Ast_c.noattr (* TODO *) }



gcc_asm_decl:
 | Tasm TOPar asmbody TCPar              {  }
 | Tasm Tvolatile TOPar asmbody TCPar   {  }


/*(*-----------------------------------------------------------------------*)*/
initialize:
 | assign_expr
     { InitExpr $1,                [] }
 | tobrace_ini initialize_list gcc_comma_opt_struct  tcbrace_ini
     { InitList (List.rev $2),     [$1;$4]++$3 }
 | tobrace_ini tcbrace_ini
     { InitList [],       [$1;$2] } /*(* gccext: *)*/


/*
(* opti: This time we use the weird order of non-terminal which requires in
 * the "caller" to do a List.rev cos quite critical. With this weird order it
 * allows yacc to use a constant stack space instead of exploding if we would
 * do a  'initialize2 Tcomma initialize_list'.
 *)
*/
initialize_list:
 | initialize2                        { [$1,   []] }
 | initialize_list TComma initialize2 { ($3,  [$2])::$1 }


/*(* gccext: condexpr and no assign_expr cos can have ambiguity with comma *)*/
initialize2:
 | cond_expr
     { InitExpr $1,   [] }
 | tobrace_ini initialize_list gcc_comma_opt_struct tcbrace_ini
     { InitList (List.rev $2),   [$1;$4]++$3 }
 | tobrace_ini tcbrace_ini
     { InitList [],  [$1;$2]  }

 /*(* gccext: labeled elements, a.k.a designators *)*/
 | designator_list TEq initialize2
     { InitDesignators ($1, $3), [$2] }

 /*(* gccext: old format *)*/
 | ident TDotDot initialize2
     { InitFieldOld (fst $1, $3),     [snd $1; $2] } /*(* in old kernel *)*/
/* conflict
 | TOCro const_expr TCCro initialize2
     { InitIndexOld ($2, $4),    [$1;$3] }
*/



/*(* they can be nested, can have a .x[3].y *)*/
designator:
 | TDot ident
     { DesignatorField (fst $2), [$1;snd $2] }
 | TOCro const_expr TCCro
     { DesignatorIndex ($2),  [$1;$3] }
 | TOCro const_expr TEllipsis const_expr TCCro
     { DesignatorRange ($2, $4),  [$1;$3;$5] }


/*(*----------------------------*)*/
/*(* workarounds *)*/
/*(*----------------------------*)*/

gcc_comma_opt_struct:
 | TComma {  [$1] }
 | /*(* empty *)*/  {  [Ast_c.fakeInfo() +> Ast_c.rewrap_str ","]  }








/*(*************************************************************************)*/
/*(* struct *)*/
/*(*************************************************************************)*/

s_or_u_spec2:
 | struct_or_union ident tobrace_struct struct_decl_list_gcc tcbrace_struct
     { StructUnion (fst $1, Some (fst $2), $4),  [snd $1;snd $2;$3;$5]  }
 | struct_or_union       tobrace_struct struct_decl_list_gcc tcbrace_struct
     { StructUnion (fst $1, None, $3), [snd $1;$2;$4] }
 | struct_or_union ident
     { StructUnionName (fst $1, fst $2), [snd $1;snd $2] }

struct_or_union2:
 | Tstruct   { Struct, $1 }
 | Tunion    { Union, $1 }
 /*(* gccext: *)*/
 | Tstruct attributes   { Struct, $1 (* TODO *) }
 | Tunion  attributes   { Union, $1  (* TODO *) }



struct_decl2:
 | field_declaration { DeclarationField $1 }
 | TPtVirg { EmptyField $1  }

 /*(* no conflict ? no need for a TMacroStruct ? apparently not as at struct
    * the rule are slightly different.
    *)*/
 | identifier TOPar argument_list TCPar TPtVirg
     { MacroDeclField ((fst $1, $3), [snd $1;$2;$4;$5;fakeInfo()]) }

 /*(* cppext: *)*/
 | cpp_directive
     { CppDirectiveStruct $1 }
 | cpp_ifdef_directive/*(* struct_decl_list ... *)*/
     { IfdefStruct $1 }


field_declaration:
 | spec_qualif_list struct_declarator_list TPtVirg
     {
       let (returnType,storage) = fixDeclSpecForDecl $1 in
       if fst (unwrap storage) <> NoSto
       then internal_error "parsing dont allow this";

       FieldDeclList ($2 +> (List.map (fun (f, iivirg) ->
         f returnType, iivirg))
                         ,[$3])
         (* dont need to check if typedef or func initialised cos
          * grammar dont allow typedef nor initialiser in struct
          *)
     }

 |  spec_qualif_list TPtVirg
     {
       (* gccext: allow empty elements if it is a structdef or enumdef *)
       let (returnType,storage) = fixDeclSpecForDecl $1 in
       if fst (unwrap storage) <> NoSto
       then internal_error "parsing dont allow this";

       FieldDeclList ([(Simple (None, returnType)) , []], [$2])
     }





struct_declarator:
 | declaratorsd
     { (fun x -> Simple   (Some (fst $1), (snd $1) x)) }
 | dotdot const_expr2
     { (fun x -> BitField (None, x, $1, $2)) }
 | declaratorsd dotdot const_expr2
     { (fun x -> BitField (Some (fst $1), ((snd $1) x), $2, $3)) }


/*(*----------------------------*)*/
/*(* workarounds *)*/
/*(*----------------------------*)*/
declaratorsd:
 | declarator { (*also ? LP.add_ident (fst (fst $1)); *) $1 }
 /*(* gccext: *)*/
 | attributes declarator   { $2 }
 | declarator attributes   { $1 }




struct_or_union_spec: s_or_u_spec2 { dt "su" (); $1 }
struct_or_union: struct_or_union2 { et "su" (); $1 }
struct_decl: struct_decl2  { et "struct" (); $1 }

dotdot: TDotDot  { et "dotdot" (); $1 }
const_expr2: const_expr { dt "const_expr2" (); $1 }

struct_decl_list_gcc:
 | struct_decl_list  { $1 }
 | /*(* empty *)*/       { [] } /*(* gccext: allow empty struct *)*/


/*(*************************************************************************)*/
/*(* enum *)*/
/*(*************************************************************************)*/
enum_spec:
 | Tenum        tobrace_enum enumerator_list gcc_comma_opt_struct tcbrace_enum
     { Enum (None,    $3),           [$1;$2;$5] ++ $4 }
 | Tenum ident  tobrace_enum enumerator_list gcc_comma_opt_struct tcbrace_enum
     { Enum (Some (fst $2), $4),     [$1; snd $2; $3;$6] ++ $5 }
 | Tenum ident
     { EnumName (fst $2),       [$1; snd $2] }

enumerator:
 | idente                 { $1, None     }
 | idente  TEq const_expr { $1, Some ($2, $3) }


/*(*----------------------------*)*/
/*(* workarounds *)*/
/*(*----------------------------*)*/

idente: ident_cpp { LP.add_ident (str_of_name $1); $1 }



/*(*************************************************************************)*/
/*(* function *)*/
/*(*************************************************************************)*/
function_definition: function_def    { fixFunc $1 }

decl_list:
 | decl           { [$1 Ast_c.LocalDecl]   }
 | decl_list decl { $1 ++ [$2 Ast_c.LocalDecl] }

/* hack : to drop when a better solution is found */
cpp_directive_list:
 | cpp_directive                    { }
 | cpp_directive_list cpp_directive { }

function_def:
 | start_fun compound      { LP.del_scope(); ($1, $2, None) }
 | start_fun cpp_directive_list compound { LP.del_scope(); ($1, $3, None) }
 | start_fun decl_list compound      {
     (* TODO: undo the typedef added ? *)
     LP.del_scope();
     ($1, $3, Some $2)
   }

start_fun: start_fun2
  { LP.new_scope();
    fix_add_params_ident $1;
    (* toreput? !LP._lexer_hint.toplevel <- false;  *)
    $1
  }

start_fun2: decl_spec declaratorfd
     { let (returnType,storage) = fixDeclSpecForFuncDef $1 in
       let (id, attrs) = $2 in
       (fst id, fixOldCDecl ((snd id) returnType) , storage, attrs)
     }
   | ctor_dtor { $1 }

ctor_dtor:
 | Tconstructorname topar tcpar {
     let id = RegularName (mk_string_wrap $1) in
     let ret = mk_ty NoType [] in
     let ty = mk_ty (FunctionType (ret, (([], (false, []))))) [$2;$3] in
     let storage = ((NoSto,false),[]) in
     let attrs = [] in
     (id, ty, storage, attrs) }
 | Tconstructorname topar parameter_type_list tcpar {
     let id = RegularName (mk_string_wrap $1) in
     let ret = mk_ty NoType [] in
     let ty = mk_ty (FunctionType (ret, $3)) [$2;$4] in
     let storage = ((NoSto,false),[]) in
     let attrs = [] in
     (id, ty, storage, attrs) }

/*(*----------------------------*)*/
/*(* workarounds *)*/
/*(*----------------------------*)*/

/* It would be very nice if we could make declarator aware that this is
coming from a function definition.  Then on the ( and ) cases, it could
set the state to something other than InParameter.  Then the case
(TIdent (s, i1)::(TComma _|TCPar _)::_ , (TComma _ |TOPar _)::_ )
in parsing_hacks.ml would not have to consider K&R variable declarations
as typedefs.  Unfortunately, doing something about this problem seems to
introduce conflicts in the parser. */

declaratorfd:
 | declarator { et "declaratorfd" (); $1, Ast_c.noattr }
 /*(* gccext: *)*/
 | attributes declarator   { et "declaratorfd" (); $2, $1 }
 | declarator attributes   { et "declaratorfd" (); $1, Ast_c.noattr }



/*(*************************************************************************)*/
/*(* cpp directives *)*/
/*(*************************************************************************)*/

cpp_directive:
 | TIncludeStart TIncludeFilename
     {
       let (i1, in_ifdef) = $1 in
       let (s, i2) = $2 in

       (* redo some lexing work :( *)
       let inc_file =
         match () with
         | _ when s =~ "^\"\\(.*\\)\"$" ->
             Local (Common.split "/" (matched1 s))
         | _ when s =~ "^\\<\\(.*\\)\\>$" ->
             NonLocal (Common.split "/" (matched1 s))
         | _ ->
             Weird s
       in
       Include { i_include = (inc_file, [i1;i2]);
                 i_rel_pos = Ast_c.noRelPos();
                 i_is_in_ifdef = !in_ifdef;
                 i_content = Ast_c.noi_content;
       }
     }

 | TDefine TIdentDefine define_val TDefEOL
     { Define ((fst $2, [$1; snd $2;$4]), (DefineVar, $3)) }

 /*
 (* The TOParDefine is introduced to avoid ambiguity with previous rules.
  * A TOParDefine is a TOPar that was just next to the ident.
  *)*/
 | TDefine TIdentDefine TOParDefine param_define_list TCPar define_val TDefEOL
     { Define
         ((fst $2, [$1; snd $2; $7]),
           (DefineFunc ($4, [$3;$5]), $6))
     }

 | TUndef TIdentDefine TDefEOL
     { Define((fst $2, [$1; snd $2; $3]), (Undef,DefineEmpty)) }
 | TCppDirectiveOther { PragmaAndCo ([$1]) }





/*(* perhaps better to use assign_expr ? but in that case need
   * do a assign_expr_of_string in parse_c
   *)*/
define_val:
 | expr      { DefineExpr $1 }
 | statement { DefineStmt $1 }
 | decl      { DefineStmt (mk_st (Decl ($1 Ast_c.NotLocalDecl)) Ast_c.noii) }

/*(*old:
  * | TypedefIdent { DefineType (nQ,(TypeName(fst $1,noTypedefDef()),[snd $1]))}
  * get conflicts:
  * | spec_qualif_list TMul
  *   { let (returnType, _) = fixDeclSpecForDecl $1 in  DefineType returnType }
  *)
*/
 | decl_spec
     { let returnType = fixDeclSpecForMacro $1 in
       DefineType returnType
     }
 | decl_spec abstract_declarator
     { let returnType = fixDeclSpecForMacro $1 in
       let typ = $2 returnType in
       DefineType typ
     }

/* can be in conflict with decl_spec, maybe change fixDeclSpecForMacro
 * to also allow storage ?
 | storage_class_spec { DefineTodo }
 | Tinline { DefineTodo }
*/

 /*(* a few special cases *)*/
 | stat_or_decl stat_or_decl_list { DefineTodo }
/*
 | statement statement { DefineTodo }
 | decl function_definition { DefineTodo }
*/




 | function_definition { DefineFunction $1 }

 | TOBraceDefineInit initialize_list gcc_comma_opt_struct TCBrace comma_opt
    { DefineInit (InitList (List.rev $2), [$1;$4]++$3++$5)  }

 /*(* note: had a conflict before when were putting TInt instead of expr *)*/
 | Tdo statement Twhile TOPar expr TCPar
     {
       (* TOREPUT
       if fst $5 <> "0"
       then pr2 "WEIRD: in macro and have not a while(0)";
       *)
       DefineDoWhileZero (($2,$5),   [$1;$3;$4;$6])
     }

 | Tasm TOPar asmbody TCPar              { DefineTodo }
 | Tasm Tvolatile TOPar asmbody TCPar    { DefineTodo }

 /*(* aliases macro *)*/
 | TMacroAttr { DefineTodo }

 | /*(* empty *)*/ { DefineEmpty }




param_define:
 | TIdent               { mk_string_wrap $1 }
 | TypedefIdent         { mk_string_wrap $1 }
 | TDefParamVariadic    { mk_string_wrap $1 }
 | TEllipsis            { "...", [$1] }
 /*(* they reuse keywords :(  *)*/
 | Tregister            { "register", [$1] }




cpp_ifdef_directive:
 | TIfdef
     { let (tag,ii) = $1 in
       IfdefDirective ((Ifdef, IfdefTag (Common.some !tag)),  [ii]) }
 | TIfdefelse
     { let (tag,ii) = $1 in
       IfdefDirective ((IfdefElse, IfdefTag (Common.some !tag)), [ii]) }
 | TIfdefelif
     { let (tag,ii) = $1 in
       IfdefDirective ((IfdefElseif, IfdefTag (Common.some !tag)), [ii]) }
 | TEndif
     { let (tag,ii) = $1 in
       IfdefDirective ((IfdefEndif, IfdefTag (Common.some !tag)), [ii]) }

 | TIfdefBool
     { let (_b, tag,ii) = $1 in
       IfdefDirective ((Ifdef, IfdefTag (Common.some !tag)), [ii]) }
 | TIfdefMisc
     { let (_b, tag,ii) = $1 in
       IfdefDirective ((Ifdef, IfdefTag (Common.some !tag)), [ii]) }
 | TIfdefVersion
     { let (_b, tag,ii) = $1 in
       IfdefDirective ((Ifdef, IfdefTag (Common.some !tag)), [ii]) }


/*(* cppext: *)*/
cpp_other:
 /*(* no conflict ? no need for a TMacroTop ? apparently not as at toplevel
    * the rule are slightly different, they cant be statement and so expr
    * at the top, only decl or function definition.
    *)*/
 | identifier TOPar argument_list TCPar TPtVirg
     {
       Declaration(MacroDecl((fst $1, $3, true), [snd $1;$2;$4;$5;fakeInfo()]))
       (* old: MacroTop (fst $1, $3,    [snd $1;$2;$4;$5])  *)
     }

 /*(* TCParEOL to fix the end-of-stream bug of ocamlyacc *)*/
 | identifier TOPar argument_list TCParEOL
     { Declaration (MacroDecl ((fst $1, $3, false), [snd $1;$2;$4;fakeInfo()])) }

  /*(* ex: EXPORT_NO_SYMBOLS; *)*/
 | identifier TPtVirg { EmptyDef [snd $1;$2] }



/*(*************************************************************************)*/
/*(* celem *)*/
/*(*************************************************************************)*/

external_declaration:
 | function_definition               { Definition $1 }
 | decl                              { Declaration ($1 Ast_c.NotLocalDecl) }


celem:
   | external_declaration                         { $1 }

 /*(* cppext: *)*/
 | cpp_directive
     { CppTop $1 }
 | cpp_other
     { $1 }
 | cpp_ifdef_directive /* (*external_declaration_list ...*)*/
     { IfdefTop $1 }

 /*(* can have asm declaration at toplevel *)*/
 | Tasm TOPar asmbody TCPar TPtVirg             { EmptyDef [$1;$2;$4;$5] }

 /*
 (* in ~/kernels/src/linux-2.5.2/drivers/isdn/hisax/isdnl3.c sometimes
  * the function ends with }; instead of just }
  * can also remove this rule and report "parse error" pb to morton
  *)*/
 | TPtVirg    { EmptyDef [$1] }


 | EOF        { FinalDef $1 }




/*(*************************************************************************)*/
/*(* some generic workarounds *)*/
/*(*************************************************************************)*/

tobrace: TOBrace  { LP.push_context LP.InFunction; LP.new_scope (); $1 }
tcbrace: TCBrace  { LP.pop_context();              LP.del_scope (); $1 }

tobrace_enum: TOBrace { LP.push_context LP.InEnum; $1 }
tcbrace_enum: TCBrace { LP.pop_context (); $1 }

tobrace_ini: TOBrace { LP.push_context LP.InInitializer; $1 }
tcbrace_ini: TCBrace { LP.pop_context (); $1 }

tobrace_struct: TOBrace { LP.push_context LP.InStruct; $1}
tcbrace_struct: TCBrace { LP.pop_context (); $1 }




topar: TOPar
     { LP.new_scope ();et "topar" ();
       LP.push_context LP.InParameter;
       $1
     }
tcpar: TCPar
     { LP.del_scope ();dt "tcpar" ();
       LP.pop_context ();
       $1
     }




/*(*************************************************************************)*/
/*(* xxx_list, xxx_opt *)*/
/*(*************************************************************************)*/


/*(* old:
compound2:
 |                            { ([],[]) }
 |  statement_list            { ([], $1) }
 |  decl_list                 { ($1, []) }
 |  decl_list statement_list  { ($1,$2) }

statement_list: stat_or_decl_list { $1 }
*)*/


/*(*
decl_list:
 | decl           { [$1]   }
 | decl_list decl { $1 ++ [$2] }

statement_list:
 | statement { [$1] }
 | statement_list statement { $1 ++ [$2] }
*)*/





string_list:
 | string_elem { $1 }
 | string_list string_elem { $1 ++ $2 }

colon_asm_list:
 | colon_asm { [$1] }
 | colon_asm_list colon_asm  { $1 ++ [$2] }

colon_option_list:
 | colon_option { [$1, []] }
 | colon_option_list TComma colon_option { $1 ++ [$3, [$2]] }


argument_list_ne:
 | argument_ne                           { [$1, []] }
 | argument_list_ne TComma argument { $1 ++ [$3,    [$2]] }

argument_list:
 | argument                           { [$1, []] }
 | argument_list TComma argument { $1 ++ [$3,    [$2]] }

/*(*
expression_list:
 | assign_expr { [$1, []] }
 | expression_list TComma assign_expr { $1 ++ [$3,   [$2]] }
*)*/


struct_decl_list:
 | struct_decl                   { [$1] }
 | struct_decl_list struct_decl  { $1 ++ [$2] }


struct_declarator_list:
 | struct_declarator                               { [$1,           []] }
 | struct_declarator_list TComma struct_declarator { $1 ++ [$3,     [$2]] }


enumerator_list:
 | enumerator                        { [$1,          []]   }
 | enumerator_list TComma enumerator { $1 ++ [$3,    [$2]] }


init_declarator_list:
 | init_declarator                             { [$1,   []] }
 | init_declarator_list TComma init_declarator { $1 ++ [$3,     [$2]] }


parameter_list:
 | parameter_decl                       { [$1, []] }
 | parameter_list TComma parameter_decl { $1 ++ [$3,  [$2]] }

taction_list_ne:
 | TAction                 { [$1] }
 | TAction taction_list_ne { $1 :: $2 }

taction_list:
/*old: was generating conflict, hence now taction_list_ne
    | (* empty *) { [] }
 | TAction { [$1] }
 | taction_list TAction { $1 ++ [$2] }
*/
 |                      { [] }
 | TAction taction_list { $1 :: $2 }

param_define_list:
 | /*(* empty *)*/ { [] }
 | param_define                           { [$1, []] }
 | param_define_list TComma param_define  { $1 ++ [$3, [$2]] }

designator_list:
 | designator { [$1] }
 | designator_list designator { $1 ++ [$2] }

attribute_list:
 | attribute { [$1] }
 | attribute_list attribute { $1 ++ [$2] }

attribute_storage_list:
 | attribute_storage { [$1] }
 | attribute_storage_list attribute_storage { $1 ++ [$2] }


attributes: attribute_list { $1 }



/*(* gccext:  which allow a trailing ',' in enum, as in perl *)*/
gcc_comma_opt:
 | TComma {  [$1] }
 | /*(* empty *)*/  {  []  }

comma_opt:
 | TComma {  [$1] }
 | /*(* empty *)*/  {  []  }

/*(*
gcc_opt_virg:
 | TPtVirg { }
 |  { }
*)*/

gcc_opt_expr:
 | expr        { Some $1 }
 | /*(* empty *)*/ { None  }

/*(*
opt_ptvirg:
 | TPtVirg { [$1] }
 | { [] }
*)*/


expr_opt:
 | expr            { Some $1 }
 | /*(* empty *)*/ { None }