parsing_c/unparse_cocci.ml

   1 (*
   2  * Copyright (C) 2010, University of Copenhagen DIKU and INRIA.
   3  * Copyright (C) 2006, 2007 Julia Lawall
   4  *
   5  * This program is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU General Public License (GPL)
   7  * version 2 as published by the Free Software Foundation.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * file license.txt for more details.
  13  *
  14  * This file was part of Coccinelle.
  15  *)
  16 open Common
  17
  18 (*****************************************************************************)
  19 (* mostly a copy paste of parsing_cocci/pretty_print_cocci.ml
  20  * todo?: try to factorize ?
  21  *)
  22 (*****************************************************************************)
  23
  24 module Ast = Ast_cocci
  25
  26 let term s = Ast.unwrap_mcode s
  27
  28 (* or perhaps can have in plus, for instance a Disj, but those Disj must be
  29  *  handled by interactive tool (by proposing alternatives)
  30  *)
  31 exception CantBeInPlus
  32
  33 (*****************************************************************************)
  34
  35 type pos = Before | After | InPlace
  36 type nlhint = StartBox | EndBox | SpaceOrNewline of string ref
  37
  38 let get_string_info = function
  39     Ast.Noindent s | Ast.Indent s | Ast.Space s -> s
  40
  41 let unknown = -1
  42
  43 let rec do_all
  44     (env, pr, pr_celem, pr_cspace, pr_space, pr_arity, pr_barrier,
  45      indent, unindent)
  46     generating xxs before =
  47
  48 (* Just to be able to copy paste the code from pretty_print_cocci.ml. *)
  49 let print_string s line lcol =
  50   let rcol = if lcol = unknown then unknown else lcol + (String.length s) in
  51   pr s line lcol rcol None in
  52 let print_string_with_hint hint s line lcol =
  53   let rcol = if lcol = unknown then unknown else lcol + (String.length s) in
  54   pr s line lcol rcol (Some hint) in
  55 let print_text s = pr s unknown unknown unknown None in
  56 let close_box _ = () in
  57 let force_newline _ = print_text "\n" in
  58
  59 let start_block () = force_newline(); indent() in
  60 let end_block () = unindent true; force_newline () in
  61 let print_string_box s = print_string s in
  62
  63 let print_option = Common.do_option in
  64 let print_option_prespace fn = function
  65     None -> ()
  66   | Some x -> pr_space(); fn x in
  67 let print_option_space fn = function
  68     None -> ()
  69   | Some x -> fn x; pr_space() in
  70 let print_between = Common.print_between in
  71
  72 let outdent _ = () (* should go to leftmost col, does nothing now *) in
  73
  74 let pretty_print_c =
  75   Pretty_print_c.mk_pretty_printers pr_celem pr_cspace
  76     force_newline indent outdent (function _ -> unindent true) in
  77
  78 (* --------------------------------------------------------------------- *)
  79 (* Only for make_hrule, print plus code, unbound metavariables *)
  80
  81 (* avoid polyvariance problems *)
  82 let anything : (Ast.anything -> unit) ref = ref (function _ -> ()) in
  83
  84 let rec print_anything = function
  85     [] -> ()
  86   | stream ->
  87       start_block();
  88       print_between force_newline print_anything_list stream;
  89       end_block()
  90
  91 and print_anything_list = function
  92     [] -> ()
  93   | [x] -> !anything x
  94   | bef::((aft::_) as rest) ->
  95       !anything bef;
  96       let space =
  97         (match bef with
  98           Ast.Rule_elemTag(_) | Ast.AssignOpTag(_) | Ast.BinaryOpTag(_)
  99         | Ast.ArithOpTag(_) | Ast.LogicalOpTag(_)
 100         | Ast.Token("if",_) | Ast.Token("while",_) -> true | _ -> false) or
 101         (match aft with
 102           Ast.Rule_elemTag(_) | Ast.AssignOpTag(_) | Ast.BinaryOpTag(_)
 103         | Ast.ArithOpTag(_) | Ast.LogicalOpTag(_) | Ast.Token("{",_) -> true
 104         | _ -> false) in
 105       if space then pr_space ();
 106       print_anything_list rest in
 107
 108 let print_around printer term = function
 109     Ast.NOTHING -> printer term
 110   | Ast.BEFORE(bef,_) -> print_anything bef; printer term
 111   | Ast.AFTER(aft,_) -> printer term; print_anything aft
 112   | Ast.BEFOREAFTER(bef,aft,_) ->
 113       print_anything bef; printer term; print_anything aft in
 114
 115 let print_string_befaft fn fn1 x info =
 116   let print ln col s = print_string (get_string_info s) ln col in
 117   List.iter
 118     (function (s,ln,col) -> fn1(); print ln col s; force_newline())
 119     info.Ast.strbef;
 120   fn x;
 121   List.iter
 122     (function (s,ln,col) -> force_newline(); fn1(); print ln col s)
 123     info.Ast.straft in
 124 let print_meta (r,x) = print_text x in
 125
 126 let print_pos l =
 127   List.iter
 128     (function
 129         Ast.MetaPos(name,_,_,_,_) ->
 130           let name = Ast.unwrap_mcode name in
 131           print_text "@"; print_meta name)
 132     l in
 133
 134 (* --------------------------------------------------------------------- *)
 135
 136 let mcode fn (s,info,mc,pos) =
 137   let line = info.Ast.line in
 138   let lcol = info.Ast.column in
 139   match (generating,mc) with
 140     (false,_) ->
 141     (* printing for transformation *)
 142     (* Here we don't care about the annotation on s. *)
 143       let print_comments lb comments =
 144         List.fold_left
 145           (function line_before ->
 146             function (str,line,col) ->
 147               match line_before with
 148                 None ->
 149                   let str =
 150                     match str with
 151                       Ast.Noindent s -> unindent false; s
 152                     | Ast.Indent s -> s
 153                     | Ast.Space s -> s in
 154                   print_string str line col; Some line
 155               | Some lb when line =|= lb ->
 156                   print_string (get_string_info str) line col; Some line
 157               | _ ->
 158                   force_newline();
 159                   (* not super elegant to put side-effecting unindent in a let
 160                      expression... *)
 161                   let str =
 162                     match str with
 163                       Ast.Noindent s -> unindent false; s
 164                     | Ast.Indent s -> s
 165                     | Ast.Space s -> s in
 166                   print_string str line col; Some line)
 167           lb comments in
 168       let line_before = print_comments None info.Ast.strbef in
 169       (match line_before with
 170         None -> ()
 171       | Some lb when lb =|= info.Ast.line -> ()
 172       | _ -> force_newline());
 173       fn s line lcol;
 174       let _ = print_comments (Some info.Ast.line) info.Ast.straft in
 175       (* newline after a pragma
 176          should really store parsed versions of the strings, but make a cheap
 177          effort here
 178          print_comments takes care of interior newlines *)
 179       ()
 180       (* printing for rule generation *)
 181   | (true, Ast.MINUS(_,_,_,plus_stream)) ->
 182       force_newline();
 183       print_text "- ";
 184       fn s line lcol; print_pos pos;
 185       (match plus_stream with
 186         Ast.NOREPLACEMENT -> ()
 187       | Ast.REPLACEMENT(plus_stream,ct) -> print_anything plus_stream)
 188   | (true, Ast.CONTEXT(_,plus_streams)) ->
 189       let fn s = force_newline(); fn s line lcol; print_pos pos in
 190       print_around fn s plus_streams
 191   | (true,Ast.PLUS Ast.ONE) ->
 192       let fn s =
 193         force_newline(); print_text "+ "; fn s line lcol; print_pos pos in
 194       print_string_befaft fn (function _ -> print_text "+ ") s info
 195   | (true,Ast.PLUS Ast.MANY) ->
 196       let fn s =
 197         force_newline(); print_text "++ "; fn s line lcol; print_pos pos in
 198       print_string_befaft fn (function _ -> print_text "++ ") s info
 199 in
 200
 201
 202 (* --------------------------------------------------------------------- *)
 203
 204 let handle_metavar name fn =
 205   let ((_,b) as s,info,mc,pos) = name in
 206   let line = info.Ast.line in
 207   let lcol = info.Ast.column in
 208   match Common.optionise (fun () -> List.assoc s env) with
 209     None ->
 210       let name_string (_,s) = s in
 211       if generating
 212       then
 213         mcode (function _ -> print_string (name_string s)) name
 214       else
 215         failwith
 216           (Printf.sprintf "SP line %d: Not found a value in env for: %s"
 217              line (name_string s))
 218   | Some e  ->
 219       pr_barrier line lcol;
 220       (if generating
 221       then
 222         (* call mcode to preserve the -+ annotation *)
 223         mcode (fun _ _ _ -> fn e) name
 224       else fn e);
 225       let rcol =
 226         if lcol = unknown then unknown else lcol + (String.length b) in
 227       pr_barrier line rcol
 228 in
 229 (* --------------------------------------------------------------------- *)
 230 let dots between fn d =
 231   match Ast.unwrap d with
 232     Ast.DOTS(l) -> print_between between fn l
 233   | Ast.CIRCLES(l) -> print_between between fn l
 234   | Ast.STARS(l) -> print_between between fn l
 235 in
 236
 237 let nest_dots starter ender fn f d =
 238   mcode print_string starter;
 239   f(); start_block();
 240   (match Ast.unwrap d with
 241     Ast.DOTS(l)    -> print_between force_newline fn l
 242   | Ast.CIRCLES(l) -> print_between force_newline fn l
 243   | Ast.STARS(l)   -> print_between force_newline fn l);
 244   end_block();
 245   mcode print_string ender
 246 in
 247
 248 let print_disj_list fn l =
 249   print_text "\n(\n";
 250   print_between (function _ -> print_text "\n|\n") fn l;
 251   print_text "\n)\n" in
 252
 253 (* --------------------------------------------------------------------- *)
 254 (* Identifier *)
 255
 256 let rec ident i =
 257   match Ast.unwrap i with
 258       Ast.Id(name) -> mcode print_string name
 259     | Ast.MetaId(name,_,_,_) ->
 260         handle_metavar name (function
 261                                | (Ast_c.MetaIdVal (id,_)) -> print_text id
 262                                | _ -> raise Impossible
 263                             )
 264     | Ast.MetaFunc(name,_,_,_) ->
 265         handle_metavar name (function
 266                                | (Ast_c.MetaFuncVal id) -> print_text id
 267                                | _ -> raise Impossible
 268                             )
 269     | Ast.MetaLocalFunc(name,_,_,_) ->
 270         handle_metavar name (function
 271                                | (Ast_c.MetaLocalFuncVal id) -> print_text id
 272                                | _ -> raise Impossible
 273                             )
 274
 275     | Ast.DisjId(id_list) ->
 276         if generating
 277         then print_disj_list ident id_list
 278         else raise CantBeInPlus
 279     | Ast.OptIdent(_) | Ast.UniqueIdent(_) ->
 280         raise CantBeInPlus
 281
 282 in
 283
 284 (* --------------------------------------------------------------------- *)
 285 (* Expression *)
 286
 287 let rec expression e =
 288   match Ast.unwrap e with
 289     Ast.Ident(id) -> ident id
 290   | Ast.Constant(const) -> mcode constant const
 291   | Ast.FunCall(fn,lp,args,rp) ->
 292       expression fn; mcode (print_string_with_hint StartBox) lp;
 293       dots (function _ -> ()) arg_expression args;
 294       mcode (print_string_with_hint EndBox) rp
 295   | Ast.Assignment(left,op,right,_) ->
 296       expression left; pr_space(); mcode assignOp op;
 297       pr_space(); expression right
 298   | Ast.CondExpr(exp1,why,exp2,colon,exp3) ->
 299       expression exp1; pr_space(); mcode print_string why;
 300       print_option (function e -> pr_space(); expression e) exp2;
 301       pr_space(); mcode print_string colon; pr_space(); expression exp3
 302   | Ast.Postfix(exp,op) -> expression exp; mcode fixOp op
 303   | Ast.Infix(exp,op) -> mcode fixOp op; expression exp
 304   | Ast.Unary(exp,op) -> mcode unaryOp op; expression exp
 305   | Ast.Binary(left,op,right) ->
 306       expression left; pr_space(); mcode binaryOp op; pr_space();
 307       expression right
 308   | Ast.Nested(left,op,right) -> failwith "nested only in minus code"
 309   | Ast.Paren(lp,exp,rp) ->
 310       mcode print_string_box lp; expression exp; close_box();
 311       mcode print_string rp
 312   | Ast.ArrayAccess(exp1,lb,exp2,rb) ->
 313       expression exp1; mcode print_string_box lb; expression exp2; close_box();
 314       mcode print_string rb
 315   | Ast.RecordAccess(exp,pt,field) ->
 316       expression exp; mcode print_string pt; ident field
 317   | Ast.RecordPtAccess(exp,ar,field) ->
 318       expression exp; mcode print_string ar; ident field
 319   | Ast.Cast(lp,ty,rp,exp) ->
 320       mcode print_string_box lp; fullType ty; close_box();
 321       mcode print_string rp; expression exp
 322   | Ast.SizeOfExpr(sizeof,exp) ->
 323       mcode print_string sizeof; expression exp
 324   | Ast.SizeOfType(sizeof,lp,ty,rp) ->
 325       mcode print_string sizeof;
 326       mcode print_string_box lp; fullType ty; close_box();
 327       mcode print_string rp
 328   | Ast.TypeExp(ty) -> fullType ty
 329
 330   | Ast.MetaErr(name,_,_,_) ->
 331       failwith "metaErr not handled"
 332
 333   | Ast.MetaExpr (name,_,_,_typedontcare,_formdontcare,_) ->
 334       handle_metavar name  (function
 335         | Ast_c.MetaExprVal (exp,_) ->
 336             pretty_print_c.Pretty_print_c.expression exp
 337         | _ -> raise Impossible
 338       )
 339
 340   | Ast.MetaExprList (name,_,_,_) ->
 341       handle_metavar name  (function
 342         | Ast_c.MetaExprListVal args ->
 343             pretty_print_c.Pretty_print_c.arg_list args
 344         | Ast_c.MetaParamListVal _ ->
 345             failwith "have meta param list matching meta exp list\n";
 346         | _ -> raise Impossible
 347       )
 348
 349   | Ast.EComma(cm) -> mcode print_string cm
 350
 351   | Ast.DisjExpr(exp_list) ->
 352       if generating
 353       then print_disj_list expression exp_list
 354       else raise CantBeInPlus
 355   | Ast.NestExpr(starter,expr_dots,ender,Some whencode,multi)
 356     when generating ->
 357       nest_dots starter ender expression
 358         (function _ -> print_text "   when != "; expression whencode)
 359         expr_dots
 360   | Ast.NestExpr(starter,expr_dots,ender,None,multi) when generating ->
 361       nest_dots starter ender expression (function _ -> ()) expr_dots
 362   | Ast.NestExpr _ -> raise CantBeInPlus
 363   | Ast.Edots(dots,Some whencode)
 364   | Ast.Ecircles(dots,Some whencode)
 365   | Ast.Estars(dots,Some whencode) ->
 366       if generating
 367       then
 368         (mcode print_string dots;
 369          print_text "   when != ";
 370          expression whencode)
 371       else raise CantBeInPlus
 372   | Ast.Edots(dots,None)
 373   | Ast.Ecircles(dots,None)
 374   | Ast.Estars(dots,None) ->
 375       if generating
 376       then mcode print_string dots
 377       else raise CantBeInPlus
 378
 379   | Ast.OptExp(exp) | Ast.UniqueExp(exp) ->
 380       raise CantBeInPlus
 381
 382 and arg_expression e =
 383   match Ast.unwrap e with
 384     Ast.EComma(cm) ->
 385       (* space is only used by add_newline, and only if not using SMPL
 386          spacing.  pr_cspace uses a " " in unparse_c.ml.  Not so nice... *)
 387       mcode (print_string_with_hint (SpaceOrNewline (ref " ")))  cm
 388   | _ -> expression e
 389
 390 and  unaryOp = function
 391     Ast.GetRef -> print_string "&"
 392   | Ast.GetRefLabel -> print_string "&&"
 393   | Ast.DeRef -> print_string "*"
 394   | Ast.UnPlus -> print_string "+"
 395   | Ast.UnMinus -> print_string "-"
 396   | Ast.Tilde -> print_string "~"
 397   | Ast.Not -> print_string "!"
 398
 399 and  assignOp = function
 400     Ast.SimpleAssign -> print_string "="
 401   | Ast.OpAssign(aop) ->
 402       (function line -> function lcol ->
 403         arithOp aop line lcol; print_string "=" line lcol)
 404
 405 and  fixOp = function
 406     Ast.Dec -> print_string "--"
 407   | Ast.Inc -> print_string "++"
 408
 409 and  binaryOp = function
 410     Ast.Arith(aop) -> arithOp aop
 411   | Ast.Logical(lop) -> logicalOp lop
 412
 413 and  arithOp = function
 414     Ast.Plus -> print_string "+"
 415   | Ast.Minus -> print_string "-"
 416   | Ast.Mul -> print_string "*"
 417   | Ast.Div -> print_string "/"
 418   | Ast.Mod -> print_string "%"
 419   | Ast.DecLeft -> print_string "<<"
 420   | Ast.DecRight -> print_string ">>"
 421   | Ast.And -> print_string "&"
 422   | Ast.Or -> print_string "|"
 423   | Ast.Xor -> print_string "^"
 424
 425 and  logicalOp = function
 426     Ast.Inf -> print_string "<"
 427   | Ast.Sup -> print_string ">"
 428   | Ast.InfEq -> print_string "<="
 429   | Ast.SupEq -> print_string ">="
 430   | Ast.Eq -> print_string "=="
 431   | Ast.NotEq -> print_string "!="
 432   | Ast.AndLog -> print_string "&&"
 433   | Ast.OrLog -> print_string "||"
 434
 435 and constant = function
 436     Ast.String(s) -> print_string ("\""^s^"\"")
 437   | Ast.Char(s) -> print_string ("\'"^s^"\'")
 438   | Ast.Int(s) -> print_string s
 439   | Ast.Float(s) -> print_string s
 440
 441 (* --------------------------------------------------------------------- *)
 442 (* Types *)
 443
 444
 445 and fullType ft =
 446   match Ast.unwrap ft with
 447     Ast.Type(cv,ty) -> print_option_space (mcode const_vol) cv; typeC ty
 448   | Ast.DisjType _ -> failwith "can't be in plus"
 449   | Ast.OptType(_) | Ast.UniqueType(_) ->
 450       raise CantBeInPlus
 451
 452 and print_function_pointer (ty,lp1,star,rp1,lp2,params,rp2) fn =
 453   fullType ty; mcode print_string lp1; mcode print_string star; fn();
 454   mcode print_string rp1; mcode print_string lp1;
 455   parameter_list params; mcode print_string rp2
 456
 457 and print_function_type (ty,lp1,params,rp1) fn =
 458   print_option fullType ty; fn(); mcode print_string lp1;
 459   parameter_list params; mcode print_string rp1
 460
 461 and typeC ty =
 462   match Ast.unwrap ty with
 463     Ast.BaseType(ty,strings) ->
 464       print_between pr_space (mcode print_string) strings
 465   | Ast.SignedT(sgn,ty) -> mcode sign sgn; print_option_prespace typeC ty
 466   | Ast.Pointer(ty,star) -> fullType ty; ft_space ty; mcode print_string star
 467   | Ast.FunctionPointer(ty,lp1,star,rp1,lp2,params,rp2) ->
 468       print_function_pointer (ty,lp1,star,rp1,lp2,params,rp2)
 469         (function _ -> ())
 470   | Ast.FunctionType (am,ty,lp1,params,rp1) ->
 471       print_function_type (ty,lp1,params,rp1) (function _ -> ())
 472   | Ast.Array(ty,lb,size,rb) ->
 473       fullType ty; mcode print_string lb; print_option expression size;
 474       mcode print_string rb
 475   | Ast.EnumName(kind,name) ->
 476       mcode print_string kind;
 477       print_option_prespace ident name
 478   | Ast.EnumDef(ty,lb,ids,rb) ->
 479       fullType ty; ft_space ty;
 480       mcode print_string lb;
 481       dots force_newline expression ids;
 482       mcode print_string rb
 483   | Ast.StructUnionName(kind,name) ->
 484       mcode structUnion kind; print_option_prespace ident name
 485   | Ast.StructUnionDef(ty,lb,decls,rb) ->
 486       fullType ty; ft_space ty;
 487       mcode print_string lb;
 488       dots force_newline declaration decls;
 489       mcode print_string rb
 490   | Ast.TypeName(name)-> mcode print_string name
 491   | Ast.MetaType(name,_,_) ->
 492       handle_metavar name  (function
 493           Ast_c.MetaTypeVal exp ->
 494             pretty_print_c.Pretty_print_c.ty exp
 495         | _ -> raise Impossible)
 496
 497 and baseType = function
 498     Ast.VoidType -> print_string "void"
 499   | Ast.CharType -> print_string "char"
 500   | Ast.ShortType -> print_string "short"
 501   | Ast.IntType -> print_string "int"
 502   | Ast.DoubleType -> print_string "double"
 503   | Ast.FloatType -> print_string "float"
 504   | Ast.LongType -> print_string "long"
 505   | Ast.LongLongType -> print_string "long long"
 506   | Ast.SizeType -> print_string "size_t "
 507   | Ast.SSizeType -> print_string "ssize_t "
 508   | Ast.PtrDiffType -> print_string "ptrdiff_t "
 509
 510 and structUnion = function
 511     Ast.Struct -> print_string "struct"
 512   | Ast.Union -> print_string "union"
 513
 514 and sign = function
 515     Ast.Signed -> print_string "signed"
 516   | Ast.Unsigned -> print_string "unsigned"
 517
 518
 519 and const_vol = function
 520     Ast.Const -> print_string "const"
 521   | Ast.Volatile -> print_string "volatile"
 522
 523 (* --------------------------------------------------------------------- *)
 524 (* Function declaration *)
 525
 526 and storage = function
 527     Ast.Static -> print_string "static"
 528   | Ast.Auto -> print_string "auto"
 529   | Ast.Register -> print_string "register"
 530   | Ast.Extern -> print_string "extern"
 531
 532 (* --------------------------------------------------------------------- *)
 533 (* Variable declaration *)
 534
 535 and print_named_type ty id =
 536   match Ast.unwrap ty with
 537     Ast.Type(None,ty1) ->
 538       (match Ast.unwrap ty1 with
 539         Ast.FunctionPointer(ty,lp1,star,rp1,lp2,params,rp2) ->
 540           print_function_pointer (ty,lp1,star,rp1,lp2,params,rp2)
 541             (function _ -> pr_space(); ident id)
 542       | Ast.FunctionType(am,ty,lp1,params,rp1) ->
 543           print_function_type (ty,lp1,params,rp1)
 544             (function _ -> pr_space(); ident id)
 545       | Ast.Array(_,_,_,_) ->
 546           let rec loop ty k =
 547             match Ast.unwrap ty with
 548               Ast.Array(ty,lb,size,rb) ->
 549                 (match Ast.unwrap ty with
 550                   Ast.Type(None,ty) ->
 551                     loop ty
 552                       (function _ ->
 553                         k ();
 554                         mcode print_string lb;
 555                         print_option expression size;
 556                         mcode print_string rb)
 557                 | _ -> failwith "complex array types not supported")
 558             | _ -> typeC ty; ty_space ty; ident id; k () in
 559           loop ty1 (function _ -> ())
 560     (*| should have a case here for pointer to array or function type
 561         that would put ( * ) around the variable.  This makes one wonder
 562         why we really need a special case for function pointer *)
 563       | _ -> fullType ty; ft_space ty; ident id)
 564   | _ -> fullType ty; ft_space ty; ident id
 565
 566 and ty_space ty =
 567   match Ast.unwrap ty with
 568     Ast.Pointer(_,_) -> ()
 569   | _ -> pr_space()
 570
 571 and ft_space ty =
 572   match Ast.unwrap ty with
 573     Ast.Type(cv,ty) ->
 574       (match Ast.unwrap ty with
 575         Ast.Pointer(_,_) -> ()
 576       | Ast.MetaType(name,_,_) ->
 577           (match List.assoc (Ast.unwrap_mcode name) env with
 578             Ast_c.MetaTypeVal (tq,ty) ->
 579               (match Ast_c.unwrap ty with
 580                 Ast_c.Pointer(_,_) -> ()
 581               | _ -> pr_space())
 582           | _ -> pr_space())
 583       | _ -> pr_space())
 584   | _ -> pr_space()
 585
 586 and declaration d =
 587   match Ast.unwrap d with
 588     Ast.MetaDecl(name,_,_) ->
 589       handle_metavar name
 590         (function
 591             Ast_c.MetaDeclVal d ->
 592               pretty_print_c.Pretty_print_c.decl d
 593           | _ -> raise Impossible)
 594   | Ast.MetaField(name,_,_) ->
 595       handle_metavar name
 596         (function
 597             Ast_c.MetaFieldVal f ->
 598               pretty_print_c.Pretty_print_c.field f
 599           | _ -> raise Impossible)
 600
 601   | Ast.MetaFieldList(name,_,_,_) ->
 602       handle_metavar name
 603         (function
 604             Ast_c.MetaFieldListVal f ->
 605               print_between force_newline pretty_print_c.Pretty_print_c.field f
 606           | _ -> raise Impossible)
 607
 608   | Ast.Init(stg,ty,id,eq,ini,sem) ->
 609       print_option (mcode storage) stg;
 610       print_option (function _ -> pr_space()) stg;
 611       print_named_type ty id;
 612       pr_space(); mcode print_string eq;
 613       pr_space(); initialiser true ini; mcode print_string sem
 614   | Ast.UnInit(stg,ty,id,sem) ->
 615       print_option (mcode storage) stg;
 616       print_option (function _ -> pr_space()) stg;
 617       print_named_type ty id;
 618       mcode print_string sem
 619   | Ast.MacroDecl(name,lp,args,rp,sem) ->
 620       ident name; mcode print_string_box lp;
 621       dots (function _ -> ()) expression args;
 622       close_box(); mcode print_string rp; mcode print_string sem
 623   | Ast.TyDecl(ty,sem) -> fullType ty; mcode print_string sem
 624   | Ast.Typedef(stg,ty,id,sem) ->
 625       mcode print_string stg;
 626       fullType ty; typeC id;
 627       mcode print_string sem
 628   | Ast.DisjDecl(_) -> raise CantBeInPlus
 629   | Ast.Ddots(_,_) -> raise CantBeInPlus
 630   | Ast.OptDecl(decl)  | Ast.UniqueDecl(decl) ->
 631       raise CantBeInPlus
 632
 633 (* --------------------------------------------------------------------- *)
 634 (* Initialiser *)
 635
 636 and initialiser nlcomma i =
 637   match Ast.unwrap i with
 638     Ast.MetaInit(name,_,_) ->
 639       handle_metavar name  (function
 640           Ast_c.MetaInitVal ini ->
 641             pretty_print_c.Pretty_print_c.init ini
 642         | _ -> raise Impossible)
 643   | Ast.MetaInitList(name,_,_,_) ->
 644       handle_metavar name  (function
 645           Ast_c.MetaInitListVal ini ->
 646             pretty_print_c.Pretty_print_c.init_list ini
 647         | _ -> raise Impossible)
 648   | Ast.InitExpr(exp) -> expression exp
 649   | Ast.ArInitList(lb,initlist,rb) ->
 650       (match Ast.undots initlist with
 651         [] -> mcode print_string lb; mcode print_string rb
 652       | lst ->
 653           mcode print_string lb; start_block();
 654           initialiser_list nlcomma lst;
 655           end_block(); mcode print_string rb)
 656   | Ast.StrInitList(_,lb,[],rb,[]) ->
 657       mcode print_string lb; mcode print_string rb
 658   | Ast.StrInitList(_,lb,initlist,rb,[]) ->
 659       mcode print_string lb; start_block();
 660       initialiser_list nlcomma initlist;
 661       end_block(); mcode print_string rb
 662   | Ast.StrInitList(_,lb,initlist,rb,_) ->
 663       failwith "unexpected whencode in plus"
 664   | Ast.InitGccExt(designators,eq,ini) ->
 665       List.iter designator designators; pr_space();
 666       mcode print_string eq; pr_space(); initialiser nlcomma ini
 667   | Ast.InitGccName(name,eq,ini) ->
 668       ident name; mcode print_string eq; initialiser nlcomma ini
 669   | Ast.IComma(comma) ->
 670       mcode print_string comma;
 671       if nlcomma then force_newline() else pr_space()
 672   | Ast.Idots(dots,Some whencode) ->
 673       if generating
 674       then
 675         (mcode print_string dots;
 676          print_text "   when != ";
 677          initialiser nlcomma whencode)
 678       else raise CantBeInPlus
 679   | Ast.Idots(dots,None) ->
 680       if generating
 681       then mcode print_string dots
 682       else raise CantBeInPlus
 683   | Ast.OptIni(ini) | Ast.UniqueIni(ini) ->
 684       raise CantBeInPlus
 685
 686 and initialiser_list nlcomma = function
 687   (* awkward, because the comma is separate from the initialiser *)
 688     [] -> ()
 689   | [x] -> initialiser false x
 690   | x::xs -> initialiser nlcomma x; initialiser_list nlcomma xs
 691
 692 and designator = function
 693     Ast.DesignatorField(dot,id) -> mcode print_string dot; ident id
 694   | Ast.DesignatorIndex(lb,exp,rb) ->
 695       mcode print_string lb; expression exp; mcode print_string rb
 696   | Ast.DesignatorRange(lb,min,dots,max,rb) ->
 697       mcode print_string lb; expression min; mcode print_string dots;
 698       expression max; mcode print_string rb
 699
 700 (* --------------------------------------------------------------------- *)
 701 (* Parameter *)
 702
 703 and parameterTypeDef p =
 704   match Ast.unwrap p with
 705     Ast.VoidParam(ty) -> fullType ty
 706   | Ast.Param(ty,Some id) -> print_named_type ty id
 707   | Ast.Param(ty,None) -> fullType ty
 708
 709   | Ast.MetaParam(name,_,_) ->
 710       handle_metavar name
 711         (function
 712             Ast_c.MetaParamVal p ->
 713               pretty_print_c.Pretty_print_c.param p
 714           | _ -> raise Impossible)
 715   | Ast.MetaParamList(name,_,_,_) ->
 716       handle_metavar name
 717         (function
 718             Ast_c.MetaParamListVal p ->
 719               pretty_print_c.Pretty_print_c.paramlist p
 720           | _ -> raise Impossible)
 721
 722   | Ast.PComma(cm) -> mcode print_string cm
 723   | Ast.Pdots(dots) | Ast.Pcircles(dots) when generating ->
 724       mcode print_string dots
 725   | Ast.Pdots(dots) | Ast.Pcircles(dots) -> raise CantBeInPlus
 726   | Ast.OptParam(param) | Ast.UniqueParam(param) -> raise CantBeInPlus
 727
 728 and parameter_list l =
 729   let comma p =
 730     parameterTypeDef p;
 731     match Ast.unwrap p with
 732       Ast.PComma(cm) -> pr_space()
 733     | _ -> () in
 734   dots (function _ -> ()) comma l
 735 in
 736
 737
 738 (* --------------------------------------------------------------------- *)
 739 (* CPP code *)
 740
 741 let rec inc_file = function
 742     Ast.Local(elems) ->
 743       print_string ("\""^(String.concat "/" (List.map inc_elem elems))^"\"")
 744   | Ast.NonLocal(elems) ->
 745       print_string ("<"^(String.concat "/" (List.map inc_elem elems))^">")
 746
 747 and inc_elem = function
 748     Ast.IncPath s -> s
 749   | Ast.IncDots -> "..."
 750
 751 (* --------------------------------------------------------------------- *)
 752 (* Top-level code *)
 753
 754 and rule_elem arity re =
 755   match Ast.unwrap re with
 756     Ast.FunHeader(_,_,fninfo,name,lp,params,rp) ->
 757       pr_arity arity; List.iter print_fninfo fninfo;
 758       ident name; mcode print_string_box lp;
 759       parameter_list params; close_box(); mcode print_string rp;
 760       pr_space()
 761   | Ast.Decl(_,_,decl) -> pr_arity arity; declaration decl
 762
 763   | Ast.SeqStart(brace) ->
 764       pr_arity arity; mcode print_string brace; start_block()
 765   | Ast.SeqEnd(brace) ->
 766       end_block(); pr_arity arity; mcode print_string brace
 767
 768   | Ast.ExprStatement(exp,sem) ->
 769       pr_arity arity; print_option expression exp; mcode print_string sem
 770
 771   | Ast.IfHeader(iff,lp,exp,rp) ->
 772       pr_arity arity;
 773       mcode print_string iff; pr_space(); mcode print_string_box lp;
 774       expression exp; close_box(); mcode print_string rp
 775   | Ast.Else(els) ->
 776       pr_arity arity; mcode print_string els
 777
 778   | Ast.WhileHeader(whl,lp,exp,rp) ->
 779       pr_arity arity;
 780       mcode print_string whl; pr_space(); mcode print_string_box lp;
 781       expression exp; close_box(); mcode print_string rp
 782   | Ast.DoHeader(d) ->
 783       pr_arity arity; mcode print_string d
 784   | Ast.WhileTail(whl,lp,exp,rp,sem) ->
 785       pr_arity arity;
 786       mcode print_string whl; pr_space(); mcode print_string_box lp;
 787       expression exp; close_box(); mcode print_string rp;
 788       mcode print_string sem
 789   | Ast.ForHeader(fr,lp,e1,sem1,e2,sem2,e3,rp) ->
 790       pr_arity arity;
 791       mcode print_string fr; mcode print_string_box lp;
 792       print_option expression e1; mcode print_string sem1;
 793       print_option expression e2; mcode print_string sem2;
 794       print_option expression e3; close_box();
 795       mcode print_string rp
 796   | Ast.IteratorHeader(nm,lp,args,rp) ->
 797       pr_arity arity;
 798       ident nm; pr_space(); mcode print_string_box lp;
 799       dots (function _ -> ()) expression args; close_box();
 800       mcode print_string rp
 801
 802   | Ast.SwitchHeader(switch,lp,exp,rp) ->
 803       pr_arity arity;
 804       mcode print_string switch; pr_space(); mcode print_string_box lp;
 805       expression exp; close_box(); mcode print_string rp
 806
 807   | Ast.Break(br,sem) ->
 808       pr_arity arity; mcode print_string br; mcode print_string sem
 809   | Ast.Continue(cont,sem) ->
 810       pr_arity arity; mcode print_string cont; mcode print_string sem
 811   | Ast.Label(l,dd) -> ident l; mcode print_string dd
 812   | Ast.Goto(goto,l,sem) ->
 813       mcode print_string goto; ident l; mcode print_string sem
 814   | Ast.Return(ret,sem) ->
 815       pr_arity arity; mcode print_string ret;
 816       mcode print_string sem
 817   | Ast.ReturnExpr(ret,exp,sem) ->
 818       pr_arity arity; mcode print_string ret; pr_space();
 819       expression exp; mcode print_string sem
 820
 821   | Ast.Exp(exp) -> pr_arity arity; expression exp
 822   | Ast.TopExp(exp) -> pr_arity arity; expression exp
 823   | Ast.Ty(ty) -> pr_arity arity; fullType ty
 824   | Ast.TopInit(init) -> initialiser false init
 825   | Ast.Include(inc,s) ->
 826       mcode print_string inc; print_text " "; mcode inc_file s
 827   | Ast.Undef(def,id) ->
 828       mcode print_string def; pr_space(); ident id
 829   | Ast.DefineHeader(def,id,params) ->
 830       mcode print_string def; pr_space(); ident id;
 831       print_define_parameters params
 832   | Ast.Default(def,colon) ->
 833       mcode print_string def; mcode print_string colon; pr_space()
 834   | Ast.Case(case,exp,colon) ->
 835       mcode print_string case; pr_space(); expression exp;
 836       mcode print_string colon; pr_space()
 837   | Ast.DisjRuleElem(res) ->
 838       if generating
 839       then
 840         (pr_arity arity; print_text "\n(\n";
 841          print_between (function _ -> print_text "\n|\n") (rule_elem arity)
 842            res;
 843          print_text "\n)")
 844       else raise CantBeInPlus
 845
 846   | Ast.MetaRuleElem(name,_,_) ->
 847       raise Impossible
 848
 849   | Ast.MetaStmt(name,_,_,_) ->
 850       handle_metavar name  (function
 851         | Ast_c.MetaStmtVal stm ->
 852             pretty_print_c.Pretty_print_c.statement stm
 853         | _ -> raise Impossible
 854                            )
 855   | Ast.MetaStmtList(name,_,_) ->
 856       failwith
 857         "MetaStmtList not supported (not even in ast_c metavars binding)"
 858
 859 and print_define_parameters params =
 860   match Ast.unwrap params with
 861     Ast.NoParams -> ()
 862   | Ast.DParams(lp,params,rp) ->
 863       mcode print_string lp;
 864       dots (function _ -> ()) print_define_param params; mcode print_string rp
 865
 866 and print_define_param param =
 867   match Ast.unwrap param with
 868     Ast.DParam(id) -> ident id
 869   | Ast.DPComma(comma) -> mcode print_string comma
 870   | Ast.DPdots(dots) -> mcode print_string dots
 871   | Ast.DPcircles(circles) -> mcode print_string circles
 872   | Ast.OptDParam(dp) -> print_text "?"; print_define_param dp
 873   | Ast.UniqueDParam(dp) -> print_text "!"; print_define_param dp
 874
 875 and print_fninfo = function
 876     Ast.FStorage(stg) -> mcode storage stg
 877   | Ast.FType(ty) -> fullType ty
 878   | Ast.FInline(inline) -> mcode print_string inline; pr_space()
 879   | Ast.FAttr(attr) -> mcode print_string attr; pr_space() in
 880
 881 let indent_if_needed s f =
 882   match Ast.unwrap s with
 883     Ast.Seq(lbrace,body,rbrace) -> pr_space(); f()
 884   | _ ->
 885       (*no newline at the end - someone else will do that*)
 886       start_block(); f(); unindent true in
 887
 888 let rec statement arity s =
 889   match Ast.unwrap s with
 890     Ast.Seq(lbrace,body,rbrace) ->
 891       rule_elem arity lbrace;
 892       dots force_newline (statement arity) body;
 893       rule_elem arity rbrace
 894
 895   | Ast.IfThen(header,branch,_) ->
 896       rule_elem arity header;
 897       indent_if_needed branch (function _ -> statement arity branch)
 898   | Ast.IfThenElse(header,branch1,els,branch2,_) ->
 899       rule_elem arity header;
 900       indent_if_needed branch1 (function _ -> statement arity branch1);
 901       force_newline();
 902       rule_elem arity els;
 903       indent_if_needed branch2 (function _ -> statement arity branch2)
 904   | Ast.While(header,body,_) ->
 905       rule_elem arity header;
 906       indent_if_needed body (function _ -> statement arity body)
 907   | Ast.Do(header,body,tail) ->
 908       rule_elem arity header;
 909       indent_if_needed body (function _ -> statement arity body);
 910       rule_elem arity tail
 911   | Ast.For(header,body,_) ->
 912       rule_elem arity header;
 913       indent_if_needed body (function _ -> statement arity body)
 914   | Ast.Iterator(header,body,(_,_,_,aft)) ->
 915       rule_elem arity header;
 916       indent_if_needed body (function _ -> statement arity body);
 917       mcode (fun _ _ _ -> ()) ((),Ast.no_info,aft,[])
 918
 919   | Ast.Switch(header,lb,decls,cases,rb) ->
 920       rule_elem arity header; pr_space(); rule_elem arity lb;
 921       dots force_newline (statement arity) decls;
 922       List.iter (function x -> case_line arity x; force_newline()) cases;
 923       rule_elem arity rb
 924
 925   | Ast.Atomic(re) -> rule_elem arity re
 926
 927   | Ast.FunDecl(header,lbrace,body,rbrace) ->
 928       rule_elem arity header; rule_elem arity lbrace;
 929       dots force_newline (statement arity) body; rule_elem arity rbrace
 930
 931   | Ast.Define(header,body) ->
 932       rule_elem arity header; pr_space();
 933       dots force_newline (statement arity) body
 934
 935   | Ast.Disj([stmt_dots]) ->
 936       if generating
 937       then
 938         (pr_arity arity;
 939          dots force_newline (statement arity) stmt_dots)
 940       else raise CantBeInPlus
 941   | Ast.Disj(stmt_dots_list) -> (* ignores newline directive for readability *)
 942       if generating
 943       then
 944         (pr_arity arity; print_text "\n(\n";
 945          print_between (function _ -> print_text "\n|\n")
 946            (dots force_newline (statement arity))
 947            stmt_dots_list;
 948          print_text "\n)")
 949       else raise CantBeInPlus
 950   | Ast.Nest(starter,stmt_dots,ender,whn,multi,_,_) when generating ->
 951       pr_arity arity;
 952       nest_dots starter ender (statement arity)
 953         (function _ ->
 954           print_between force_newline
 955             (whencode (dots force_newline (statement "")) (statement "")) whn;
 956           force_newline())
 957         stmt_dots
 958   | Ast.Nest(_) -> raise CantBeInPlus
 959   | Ast.Dots(d,whn,_,_) | Ast.Circles(d,whn,_,_) | Ast.Stars(d,whn,_,_) ->
 960       if generating
 961       then
 962         (pr_arity arity; mcode print_string d;
 963          print_between force_newline
 964            (whencode (dots force_newline (statement "")) (statement "")) whn;
 965          force_newline())
 966       else raise CantBeInPlus
 967
 968   | Ast.OptStm(s) | Ast.UniqueStm(s) ->
 969       raise CantBeInPlus
 970
 971 and whencode notfn alwaysfn = function
 972     Ast.WhenNot a ->
 973       print_text "   WHEN != "; notfn a
 974   | Ast.WhenAlways a ->
 975       print_text "   WHEN = "; alwaysfn a
 976   | Ast.WhenModifier x -> print_text "   WHEN "; print_when_modif x
 977   | Ast.WhenNotTrue a ->
 978       print_text "   WHEN != TRUE "; rule_elem "" a
 979   | Ast.WhenNotFalse a ->
 980       print_text "   WHEN != FALSE "; rule_elem "" a
 981
 982 and print_when_modif = function
 983   | Ast.WhenAny    -> print_text "ANY"
 984   | Ast.WhenStrict -> print_text "STRICT"
 985   | Ast.WhenForall -> print_text "FORALL"
 986   | Ast.WhenExists -> print_text "EXISTS"
 987
 988 and case_line arity c =
 989   match Ast.unwrap c with
 990     Ast.CaseLine(header,code) ->
 991       rule_elem arity header; pr_space();
 992       dots force_newline (statement arity) code
 993   | Ast.OptCase(case) -> raise CantBeInPlus in
 994
 995 let top_level t =
 996   match Ast.unwrap t with
 997     Ast.FILEINFO(old_file,new_file) -> raise CantBeInPlus
 998   | Ast.NONDECL(stmt) -> statement "" stmt
 999   | Ast.CODE(stmt_dots) -> dots force_newline (statement "") stmt_dots
1000   | Ast.ERRORWORDS(exps) -> raise CantBeInPlus
1001 in
1002
1003 (*
1004 let rule =
1005   print_between (function _ -> force_newline(); force_newline()) top_level
1006 in
1007 *)
1008
1009 let if_open_brace  = function "{" -> true | _ -> false in
1010
1011 (* boolean result indicates whether an indent is needed *)
1012 let rec pp_any = function
1013   (* assert: normally there is only CONTEXT NOTHING tokens in any *)
1014     Ast.FullTypeTag(x) -> fullType x; false
1015   | Ast.BaseTypeTag(x) -> baseType x unknown unknown; false
1016   | Ast.StructUnionTag(x) -> structUnion x unknown unknown; false
1017   | Ast.SignTag(x) -> sign x unknown unknown; false
1018
1019   | Ast.IdentTag(x) -> ident x; false
1020
1021   | Ast.ExpressionTag(x) -> expression x; false
1022
1023   | Ast.ConstantTag(x) -> constant x unknown unknown; false
1024   | Ast.UnaryOpTag(x) -> unaryOp x unknown unknown; false
1025   | Ast.AssignOpTag(x) -> assignOp x unknown unknown; false
1026   | Ast.FixOpTag(x) -> fixOp x unknown unknown; false
1027   | Ast.BinaryOpTag(x) -> binaryOp x unknown unknown; false
1028   | Ast.ArithOpTag(x) -> arithOp x unknown unknown; false
1029   | Ast.LogicalOpTag(x) -> logicalOp x unknown unknown; false
1030
1031   | Ast.InitTag(x) -> initialiser false x; false
1032   | Ast.DeclarationTag(x) -> declaration x; false
1033
1034   | Ast.StorageTag(x) -> storage x unknown unknown; false
1035   | Ast.IncFileTag(x) -> inc_file x unknown unknown; false
1036
1037   | Ast.Rule_elemTag(x) -> rule_elem "" x; false
1038   | Ast.StatementTag(x) -> statement "" x; false
1039   | Ast.CaseLineTag(x) -> case_line "" x; false
1040
1041   | Ast.ConstVolTag(x) -> const_vol x unknown unknown; false
1042   | Ast.Pragma(xs) ->
1043       (match xs with (Ast.Space s)::_ -> pr_space() | _ -> ());
1044       let rec loop = function
1045           [] -> ()
1046         | [Ast.Noindent s] -> unindent false; print_text s
1047         | [Ast.Indent s] -> print_text s
1048         | (Ast.Space s) :: (((Ast.Indent _ | Ast.Noindent _) :: _) as rest) ->
1049             print_text s; force_newline(); loop rest
1050         | (Ast.Space s) :: rest -> print_text s; pr_space(); loop rest
1051         | Ast.Noindent s :: rest ->
1052             unindent false; print_text s; force_newline(); loop rest
1053         | Ast.Indent s :: rest ->
1054             print_text s; force_newline(); loop rest in
1055       loop xs; false
1056   | Ast.Token(x,None) -> print_text x; if_open_brace x
1057   | Ast.Token(x,Some info) ->
1058       mcode
1059         (fun x line lcol ->
1060           (match x with
1061             "else" -> force_newline()
1062           | _ -> ());
1063           print_string x line lcol)
1064         (let nomcodekind = Ast.CONTEXT(Ast.DontCarePos,Ast.NOTHING) in
1065         (x,info,nomcodekind,[]));
1066       if_open_brace x
1067
1068   | Ast.Code(x) -> let _ = top_level x in false
1069
1070   (* this is not '...', but a list of expr/statement/params, and
1071      normally there should be no '...' inside them *)
1072   | Ast.ExprDotsTag(x) -> dots (function _ -> ()) expression x; false
1073   | Ast.ParamDotsTag(x) -> parameter_list x; false
1074   | Ast.StmtDotsTag(x) -> dots force_newline (statement "") x; false
1075   | Ast.DeclDotsTag(x) -> dots force_newline declaration x; false
1076
1077   | Ast.TypeCTag(x) -> typeC x; false
1078   | Ast.ParamTag(x) -> parameterTypeDef x; false
1079   | Ast.SgrepStartTag(x) -> failwith "unexpected start tag"
1080   | Ast.SgrepEndTag(x) -> failwith "unexpected end tag"
1081 in
1082
1083 (*Printf.printf "start of the function\n";*)
1084
1085   anything := (function x -> let _ = pp_any x in ());
1086
1087   (* todo? imitate what is in pretty_print_cocci ? *)
1088   match xxs with
1089     [] -> ()
1090   | x::xs ->
1091       (* for many tags, we must not do a newline before the first '+' *)
1092       let isfn s =
1093         match Ast.unwrap s with Ast.FunDecl _ -> true | _ -> false in
1094       let unindent_before = function
1095         (* need to get unindent before newline for } *)
1096           (Ast.Token ("}",_)::_) -> true
1097         | _ -> false in
1098       let prnl x =
1099         (if unindent_before x then unindent true);
1100         force_newline() in
1101       let newline_before _ =
1102         if before =*= After
1103         then
1104           let hd = List.hd xxs in
1105           match hd with
1106             (Ast.Pragma l::_)
1107               when List.for_all (function Ast.Space x -> true | _ -> false) l ->
1108                 ()
1109           | (Ast.StatementTag s::_) when isfn s ->
1110               force_newline(); force_newline()
1111           | (Ast.Pragma _::_)
1112           | (Ast.Rule_elemTag _::_) | (Ast.StatementTag _::_)
1113           | (Ast.InitTag _::_)
1114           | (Ast.DeclarationTag _::_) | (Ast.Token ("}",_)::_) -> prnl hd
1115           | _ -> () in
1116       let newline_after _ =
1117         if before =*= Before
1118         then
1119           match List.rev(List.hd(List.rev xxs)) with
1120             (Ast.StatementTag s::_) ->
1121               (if isfn s then force_newline());
1122               force_newline()
1123           | (Ast.Pragma _::_)
1124           | (Ast.Rule_elemTag _::_) | (Ast.InitTag _::_)
1125           | (Ast.DeclarationTag _::_) | (Ast.Token ("{",_)::_) ->
1126               force_newline()
1127           | _ -> () in
1128       (* print a newline at the beginning, if needed *)
1129       newline_before();
1130       (* print a newline before each of the rest *)
1131       let rec loop leading_newline indent_needed = function
1132           [] -> ()
1133         | x::xs ->
1134             (if leading_newline
1135             then
1136               match (indent_needed,unindent_before x) with
1137                 (true,true) -> force_newline()
1138               | (true,false) -> force_newline(); indent()
1139               | (false,true) -> unindent true; force_newline()
1140               | (false,false) -> force_newline());
1141             let space_needed_before = function
1142                 Ast.ParamTag(x) ->
1143                   (match Ast.unwrap x with
1144                     Ast.PComma _ -> false
1145                   | _ -> true)
1146               | Ast.ExpressionTag(x) ->
1147                   (match Ast.unwrap x with
1148                     Ast.EComma _ -> false
1149                   | _ -> true)
1150               | Ast.InitTag(x) ->
1151                   (match Ast.unwrap x with
1152                     Ast.IComma _ -> false
1153                   | _ -> true)
1154               | Ast.Token(t,_) when List.mem t [",";";";"(";")";".";"->"] ->
1155                   false
1156               | _ -> true in
1157             let space_needed_after = function
1158                 Ast.Token(t,_)
1159                 when List.mem t ["(";".";"->"] -> (*never needed*) false
1160               | Ast.Token(t,_) when List.mem t ["if";"for";"while";"do"] ->
1161                   (* space always needed *)
1162                   pr_space(); false
1163               | Ast.ExpressionTag(e) ->
1164                   (match Ast.unwrap e with
1165                     Ast.EComma _ ->
1166                       (* space always needed *)
1167                       pr_space(); false
1168                   | _ -> true)
1169               | t -> true in
1170             let indent_needed =
1171               let rec loop space_after indent_needed = function
1172                   [] -> indent_needed
1173                 | x::xs ->
1174                     (if space_after && space_needed_before x
1175                     then pr_space());
1176                     let indent_needed = pp_any x in
1177                     let space_after = space_needed_after x in
1178                     loop space_after indent_needed xs in
1179               loop false false x in
1180             loop true indent_needed xs in
1181       loop false false (x::xs);
1182       (* print a newline at the end, if needed *)
1183       newline_after()
1184
1185 let rec pp_list_list_any (envs, pr, pr_celem, pr_cspace, pr_space, pr_arity,
1186                           pr_barrier, indent, unindent)
1187     generating xxs before =
1188   List.iter
1189     (function env ->
1190       do_all (env, pr, pr_celem, pr_cspace, pr_space, pr_arity, pr_barrier,
1191               indent, unindent)
1192         generating xxs before)
1193     envs