parsing_cocci/.#ast_cocci.ml.1.149

   1 (*
   2 * Copyright 2005-2009, Ecole des Mines de Nantes, University of Copenhagen
   3 * Yoann Padioleau, Julia Lawall, Rene Rydhof Hansen, Henrik Stuart, Gilles Muller
   4 * This file is part of Coccinelle.
   5 *
   6 * Coccinelle is free software: you can redistribute it and/or modify
   7 * it under the terms of the GNU General Public License as published by
   8 * the Free Software Foundation, according to version 2 of the License.
   9 *
  10 * Coccinelle is distributed in the hope that it will be useful,
  11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 * GNU General Public License for more details.
  14 *
  15 * You should have received a copy of the GNU General Public License
  16 * along with Coccinelle.  If not, see <http://www.gnu.org/licenses/>.
  17 *
  18 * The authors reserve the right to distribute this or future versions of
  19 * Coccinelle under other licenses.
  20 *)
  21
  22
  23 (* --------------------------------------------------------------------- *)
  24 (* Modified code *)
  25
  26 type info = { line : int; column : int;
  27               strbef : string list; straft : string list }
  28 type line = int
  29 type meta_name = string * string
  30 (* need to be careful about rewrapping, to avoid duplicating pos info
  31 currently, the pos info is always None until asttoctl2. *)
  32 type 'a wrap =
  33     {node : 'a;
  34       node_line : line;
  35       free_vars : meta_name list; (*free vars*)
  36       minus_free_vars : meta_name list; (*minus free vars*)
  37       fresh_vars : meta_name list; (*fresh vars*)
  38       inherited : meta_name list; (*inherited vars*)
  39       saved_witness : meta_name list; (*witness vars*)
  40       bef_aft : dots_bef_aft;
  41       (* the following is for or expressions *)
  42       pos_info : meta_name mcode option; (* pos info, try not to duplicate *)
  43       true_if_test_exp : bool;(* true if "test_exp from iso", only for exprs *)
  44       (* isos relevant to the term; ultimately only used for rule_elems *)
  45       iso_info : (string*anything) list }
  46
  47 and 'a befaft =
  48     BEFORE      of 'a list list
  49   | AFTER       of 'a list list
  50   | BEFOREAFTER of 'a list list * 'a list list
  51   | NOTHING
  52
  53 and 'a mcode = 'a * info * mcodekind * meta_pos (* pos variable *)
  54  (* pos is an offset indicating where in the C code the mcodekind has an
  55  effect *)
  56  and mcodekind =
  57     MINUS       of pos * anything list list
  58   | CONTEXT     of pos * anything befaft
  59   | PLUS
  60  and fixpos =
  61     Real of int (* charpos *) | Virt of int * int (* charpos + offset *)
  62  and pos = NoPos | DontCarePos | FixPos of (fixpos * fixpos)
  63
  64 and dots_bef_aft =
  65     NoDots
  66   | AddingBetweenDots of statement * int (*index of let var*)
  67   | DroppingBetweenDots of statement * int (*index of let var*)
  68
  69 and inherited = Type_cocci.inherited
  70 and keep_binding = Type_cocci.keep_binding
  71 and multi = bool (*true if a nest is one or more, false if it is zero or more*)
  72
  73 and end_info =
  74     meta_name list (*free vars*) * meta_name list (*inherited vars*) *
  75       meta_name list (*witness vars*) * mcodekind
  76
  77 (* --------------------------------------------------------------------- *)
  78 (* Metavariables *)
  79
  80 and arity = UNIQUE | OPT | MULTI | NONE
  81
  82 and metavar =
  83     MetaIdDecl of arity * meta_name (* name *)
  84   | MetaFreshIdDecl of arity * meta_name (* name *)
  85   | MetaTypeDecl of arity * meta_name (* name *)
  86   | MetaListlenDecl of meta_name (* name *)
  87   | MetaParamDecl of arity * meta_name (* name *)
  88   | MetaParamListDecl of arity * meta_name (*name*) * meta_name option (*len*)
  89   | MetaConstDecl of
  90       arity * meta_name (* name *) * Type_cocci.typeC list option
  91   | MetaErrDecl of arity * meta_name (* name *)
  92   | MetaExpDecl of
  93       arity * meta_name (* name *) * Type_cocci.typeC list option
  94   | MetaIdExpDecl of
  95       arity * meta_name (* name *) * Type_cocci.typeC list option
  96   | MetaLocalIdExpDecl of
  97       arity * meta_name (* name *) * Type_cocci.typeC list option
  98   | MetaExpListDecl of arity * meta_name (*name*) * meta_name option (*len*)
  99   | MetaStmDecl of arity * meta_name (* name *)
 100   | MetaStmListDecl of arity * meta_name (* name *)
 101   | MetaFuncDecl of arity * meta_name (* name *)
 102   | MetaLocalFuncDecl of arity * meta_name (* name *)
 103   | MetaPosDecl of arity * meta_name (* name *)
 104   | MetaDeclarerDecl of arity * meta_name (* name *)
 105   | MetaIteratorDecl of arity * meta_name (* name *)
 106
 107 (* --------------------------------------------------------------------- *)
 108 (* --------------------------------------------------------------------- *)
 109 (* Dots *)
 110
 111 and 'a base_dots =
 112     DOTS of 'a list
 113   | CIRCLES of 'a list
 114   | STARS of 'a list
 115
 116 and 'a dots = 'a base_dots wrap
 117
 118 (* --------------------------------------------------------------------- *)
 119 (* Identifier *)
 120
 121 and base_ident =
 122     Id of string mcode
 123
 124   | MetaId        of meta_name mcode * ident list * keep_binding * inherited
 125   | MetaFunc      of meta_name mcode * ident list * keep_binding * inherited
 126   | MetaLocalFunc of meta_name mcode * ident list * keep_binding * inherited
 127
 128   | OptIdent      of ident
 129   | UniqueIdent   of ident
 130
 131 and ident = base_ident wrap
 132
 133 (* --------------------------------------------------------------------- *)
 134 (* Expression *)
 135
 136 and base_expression =
 137     Ident          of ident
 138   | Constant       of constant mcode
 139   | FunCall        of expression * string mcode (* ( *) *
 140                       expression dots * string mcode (* ) *)
 141   | Assignment     of expression * assignOp mcode * expression *
 142                       bool (* true if it can match an initialization *)
 143   | CondExpr       of expression * string mcode (* ? *) * expression option *
 144                       string mcode (* : *) * expression
 145   | Postfix        of expression * fixOp mcode
 146   | Infix          of expression * fixOp mcode
 147   | Unary          of expression * unaryOp mcode
 148   | Binary         of expression * binaryOp mcode * expression
 149   | Nested         of expression * binaryOp mcode * expression
 150   | ArrayAccess    of expression * string mcode (* [ *) * expression *
 151                       string mcode (* ] *)
 152   | RecordAccess   of expression * string mcode (* . *) * ident
 153   | RecordPtAccess of expression * string mcode (* -> *) * ident
 154   | Cast           of string mcode (* ( *) * fullType * string mcode (* ) *) *
 155                       expression
 156   | SizeOfExpr     of string mcode (* sizeof *) * expression
 157   | SizeOfType     of string mcode (* sizeof *) * string mcode (* ( *) *
 158                       fullType * string mcode (* ) *)
 159   | TypeExp        of fullType (*type name used as an expression, only in
 160                                   arg or #define*)
 161
 162   | Paren          of string mcode (* ( *) * expression *
 163                       string mcode (* ) *)
 164
 165   | MetaErr        of meta_name mcode * expression list * keep_binding *
 166                       inherited
 167   | MetaExpr       of meta_name mcode * expression list * keep_binding *
 168                       Type_cocci.typeC list option * form * inherited
 169   | MetaExprList   of meta_name mcode * listlen option * keep_binding *
 170                       inherited (* only in arg lists *)
 171
 172   | EComma         of string mcode (* only in arg lists *)
 173
 174   | DisjExpr       of expression list
 175   | NestExpr       of expression dots * expression option * multi
 176
 177   (* can appear in arg lists, and also inside Nest, as in:
 178    if(< ... X ... Y ...>)
 179    In the following, the expression option is the WHEN  *)
 180   | Edots          of string mcode (* ... *) * expression option
 181   | Ecircles       of string mcode (* ooo *) * expression option
 182   | Estars         of string mcode (* *** *) * expression option
 183
 184   | OptExp         of expression
 185   | UniqueExp      of expression
 186
 187 (* ANY = int E; ID = idexpression int X; CONST = constant int X; *)
 188 and form = ANY | ID | LocalID | CONST (* form for MetaExp *)
 189
 190 and expression = base_expression wrap
 191
 192 and listlen = meta_name mcode * keep_binding * inherited
 193
 194 and  unaryOp = GetRef | DeRef | UnPlus |  UnMinus | Tilde | Not
 195 and  assignOp = SimpleAssign | OpAssign of arithOp
 196 and  fixOp = Dec | Inc
 197
 198 and  binaryOp = Arith of arithOp | Logical of logicalOp
 199 and  arithOp =
 200     Plus | Minus | Mul | Div | Mod | DecLeft | DecRight | And | Or | Xor
 201 and  logicalOp = Inf | Sup | InfEq | SupEq | Eq | NotEq | AndLog | OrLog
 202
 203 and constant =
 204     String of string
 205   | Char   of string
 206   | Int    of string
 207   | Float  of string
 208
 209 (* --------------------------------------------------------------------- *)
 210 (* Types *)
 211
 212 and base_fullType =
 213     Type            of const_vol mcode option * typeC
 214   | DisjType        of fullType list (* only after iso *)
 215   | OptType         of fullType
 216   | UniqueType      of fullType
 217
 218 and base_typeC =
 219     BaseType        of baseType * string mcode list (* Yoann style *)
 220   | SignedT         of sign mcode * typeC option
 221   | Pointer         of fullType * string mcode (* * *)
 222   | FunctionPointer of fullType *
 223                   string mcode(* ( *)*string mcode(* * *)*string mcode(* ) *)*
 224                   string mcode (* ( *)*parameter_list*string mcode(* ) *)
 225
 226   (* used for the automatic managment of prototypes *)
 227   | FunctionType     of bool (* true if all minus for dropping return type *) *
 228                    fullType option *
 229                    string mcode (* ( *) * parameter_list *
 230                    string mcode (* ) *)
 231
 232   | Array           of fullType * string mcode (* [ *) *
 233                        expression option * string mcode (* ] *)
 234   | EnumName        of string mcode (*enum*) * ident (* name *)
 235   | StructUnionName of structUnion mcode * ident option (* name *)
 236   | StructUnionDef  of fullType (* either StructUnionName or metavar *) *
 237         string mcode (* { *) * declaration dots * string mcode (* } *)
 238   | TypeName        of string mcode
 239
 240   | MetaType        of meta_name mcode * keep_binding * inherited
 241
 242 and fullType = base_fullType wrap
 243 and typeC = base_typeC wrap
 244
 245 and baseType = VoidType | CharType | ShortType | IntType | DoubleType
 246   | FloatType | LongType | LongLongType
 247
 248 and structUnion = Struct | Union
 249
 250 and sign = Signed | Unsigned
 251
 252 and const_vol = Const | Volatile
 253
 254 (* --------------------------------------------------------------------- *)
 255 (* Variable declaration *)
 256 (* Even if the Cocci program specifies a list of declarations, they are
 257    split out into multiple declarations of a single variable each. *)
 258
 259 and base_declaration =
 260     Init of storage mcode option * fullType * ident * string mcode (*=*) *
 261         initialiser * string mcode (*;*)
 262   | UnInit of storage mcode option * fullType * ident * string mcode (* ; *)
 263   | TyDecl of fullType * string mcode (* ; *)
 264   | MacroDecl of ident (* name *) * string mcode (* ( *) *
 265         expression dots * string mcode (* ) *) * string mcode (* ; *)
 266   | Typedef of string mcode (*typedef*) * fullType *
 267                typeC (* either TypeName or metavar *) * string mcode (*;*)
 268   | DisjDecl of declaration list
 269   (* Ddots is for a structure declaration *)
 270   | Ddots    of string mcode (* ... *) * declaration option (* whencode *)
 271
 272   | MetaDecl of meta_name mcode * keep_binding * inherited
 273
 274   | OptDecl    of declaration
 275   | UniqueDecl of declaration
 276
 277 and declaration = base_declaration wrap
 278
 279 (* --------------------------------------------------------------------- *)
 280 (* Initializers *)
 281
 282 and base_initialiser =
 283     InitExpr of expression
 284   | InitList of string mcode (*{*) * initialiser list * string mcode (*}*) *
 285         initialiser list (* whencode: elements that shouldn't appear in init *)
 286   | InitGccDotName of
 287       string mcode (*.*) * ident (* name *) * string mcode (*=*) *
 288         initialiser (* gccext: *)
 289   | InitGccName of ident (* name *) * string mcode (*:*) *
 290         initialiser
 291   | InitGccIndex of
 292       string mcode (*[*) * expression * string mcode (*]*) *
 293         string mcode (*=*) * initialiser
 294   | InitGccRange of
 295       string mcode (*[*) * expression * string mcode (*...*) *
 296         expression * string mcode (*]*) * string mcode (*=*) * initialiser
 297   | IComma of string mcode (* , *)
 298
 299   | OptIni    of initialiser
 300   | UniqueIni of initialiser
 301
 302 and initialiser = base_initialiser wrap
 303
 304 (* --------------------------------------------------------------------- *)
 305 (* Parameter *)
 306
 307 and base_parameterTypeDef =
 308     VoidParam     of fullType
 309   | Param         of fullType * ident option
 310
 311   | MetaParam     of meta_name mcode * keep_binding * inherited
 312   | MetaParamList of meta_name mcode * listlen option * keep_binding *
 313                      inherited
 314
 315   | PComma        of string mcode
 316
 317   | Pdots         of string mcode (* ... *)
 318   | Pcircles      of string mcode (* ooo *)
 319
 320   | OptParam      of parameterTypeDef
 321   | UniqueParam   of parameterTypeDef
 322
 323 and parameterTypeDef = base_parameterTypeDef wrap
 324
 325 and parameter_list = parameterTypeDef dots
 326
 327 (* --------------------------------------------------------------------- *)
 328 (* #define Parameters *)
 329
 330 and base_define_param =
 331     DParam        of ident
 332   | DPComma       of string mcode
 333   | DPdots        of string mcode (* ... *)
 334   | DPcircles     of string mcode (* ooo *)
 335   | OptDParam     of define_param
 336   | UniqueDParam  of define_param
 337
 338 and define_param = base_define_param wrap
 339
 340 and base_define_parameters =
 341     NoParams     (* not parameter list, not an empty one *)
 342   | DParams      of string mcode(*( *) * define_param dots * string mcode(* )*)
 343
 344 and define_parameters = base_define_parameters wrap
 345
 346 (* --------------------------------------------------------------------- *)
 347 (* positions *)
 348
 349 (* PER = keep bindings separate, ALL = collect them *)
 350 and meta_collect = PER | ALL
 351
 352 and meta_pos =
 353     MetaPos of meta_name mcode * meta_name list *
 354         meta_collect * keep_binding * inherited
 355   | NoMetaPos
 356
 357 (* --------------------------------------------------------------------- *)
 358 (* Function declaration *)
 359
 360 and storage = Static | Auto | Register | Extern
 361
 362 (* --------------------------------------------------------------------- *)
 363 (* Top-level code *)
 364
 365 and base_rule_elem =
 366     FunHeader     of mcodekind (* before the function header *) *
 367                      bool (* true if all minus, for dropping static, etc *) *
 368                      fninfo list * ident (* name *) *
 369                      string mcode (* ( *) * parameter_list *
 370                      string mcode (* ) *)
 371   | Decl          of mcodekind (* before the decl *) *
 372                      bool (* true if all minus *) * declaration
 373
 374   | SeqStart      of string mcode (* { *)
 375   | SeqEnd        of string mcode (* } *)
 376
 377   | ExprStatement of expression * string mcode (*;*)
 378   | IfHeader      of string mcode (* if *) * string mcode (* ( *) *
 379                      expression * string mcode (* ) *)
 380   | Else          of string mcode (* else *)
 381   | WhileHeader   of string mcode (* while *) * string mcode (* ( *) *
 382                      expression * string mcode (* ) *)
 383   | DoHeader      of string mcode (* do *)
 384   | WhileTail     of string mcode (* while *) * string mcode (* ( *) *
 385                      expression * string mcode (* ) *) *
 386                      string mcode (* ; *)
 387   | ForHeader     of string mcode (* for *) * string mcode (* ( *) *
 388                      expression option * string mcode (*;*) *
 389                      expression option * string mcode (*;*) *
 390                      expression option * string mcode (* ) *)
 391   | IteratorHeader of ident (* name *) * string mcode (* ( *) *
 392                      expression dots * string mcode (* ) *)
 393   | SwitchHeader  of string mcode (* switch *) * string mcode (* ( *) *
 394                      expression * string mcode (* ) *)
 395   | Break         of string mcode (* break *) * string mcode (* ; *)
 396   | Continue      of string mcode (* continue *) * string mcode (* ; *)
 397   | Label         of ident * string mcode (* : *)
 398   | Goto          of string mcode (* goto *) * ident * string mcode (* ; *)
 399   | Return        of string mcode (* return *) * string mcode (* ; *)
 400   | ReturnExpr    of string mcode (* return *) * expression *
 401                      string mcode (* ; *)
 402
 403   | MetaRuleElem  of meta_name mcode * keep_binding * inherited
 404   | MetaStmt      of meta_name mcode * keep_binding * metaStmtInfo *
 405                      inherited
 406   | MetaStmtList  of meta_name mcode * keep_binding * inherited
 407
 408   | Exp           of expression (* matches a subterm *)
 409   | TopExp        of expression (* for macros body, exp at top level,
 410                                    not subexp *)
 411   | Ty            of fullType (* only at SP top level, matches a subterm *)
 412   | TopInit       of initialiser (* only at top level *)
 413   | Include       of string mcode (*#include*) * inc_file mcode (*file *)
 414   | DefineHeader  of string mcode (* #define *) * ident (* name *) *
 415                      define_parameters (*params*)
 416   | Case          of string mcode (* case *) * expression * string mcode (*:*)
 417   | Default       of string mcode (* default *) * string mcode (*:*)
 418   | DisjRuleElem  of rule_elem list
 419
 420 and fninfo =
 421     FStorage of storage mcode
 422   | FType of fullType
 423   | FInline of string mcode
 424   | FAttr of string mcode
 425
 426 and metaStmtInfo =
 427     NotSequencible | SequencibleAfterDots of dots_whencode list | Sequencible
 428
 429 and rule_elem = base_rule_elem wrap
 430
 431 and base_statement =
 432     Seq           of rule_elem (* { *) * statement dots *
 433                      statement dots * rule_elem (* } *)
 434   | IfThen        of rule_elem (* header *) * statement * end_info (* endif *)
 435   | IfThenElse    of rule_elem (* header *) * statement *
 436                      rule_elem (* else *) * statement * end_info (* endif *)
 437   | While         of rule_elem (* header *) * statement * end_info (*endwhile*)
 438   | Do            of rule_elem (* do *) * statement * rule_elem (* tail *)
 439   | For           of rule_elem (* header *) * statement * end_info (*endfor*)
 440   | Iterator      of rule_elem (* header *) * statement * end_info (*enditer*)
 441   | Switch        of rule_elem (* header *) * rule_elem (* { *) *
 442                      case_line list * rule_elem (* } *)
 443   | Atomic        of rule_elem
 444   | Disj          of statement dots list
 445   | Nest          of statement dots *
 446                      (statement dots,statement) whencode list * multi *
 447                      dots_whencode list * dots_whencode list
 448   | FunDecl       of rule_elem (* header *) * rule_elem (* { *) *
 449                      statement dots * statement dots * rule_elem (* } *)
 450   | Define        of rule_elem (* header *) * statement dots
 451   | Dots          of string mcode (* ... *) *
 452                      (statement dots,statement) whencode list *
 453                      dots_whencode list * dots_whencode list
 454   | Circles       of string mcode (* ooo *) *
 455                      (statement dots,statement) whencode list *
 456                      dots_whencode list * dots_whencode list
 457   | Stars         of string mcode (* *** *) *
 458                      (statement dots,statement) whencode list *
 459                      dots_whencode list * dots_whencode list
 460   | OptStm        of statement
 461   | UniqueStm     of statement
 462
 463 and ('a,'b) whencode =
 464     WhenNot of 'a
 465   | WhenAlways of 'b
 466   | WhenModifier of when_modifier
 467   | WhenNotTrue of rule_elem (* useful for fvs *)
 468   | WhenNotFalse of rule_elem
 469
 470 and when_modifier =
 471   (* The following removes the shortest path constraint.  It can be used
 472      with other when modifiers *)
 473     WhenAny
 474   (* The following removes the special consideration of error paths.  It
 475      can be used with other when modifiers *)
 476   | WhenStrict
 477   | WhenForall
 478   | WhenExists
 479
 480 (* only used with asttoctl *)
 481 and dots_whencode =
 482     WParen of rule_elem * meta_name (*pren_var*)
 483   | Other of statement
 484   | Other_dots of statement dots
 485
 486 and statement = base_statement wrap
 487
 488 and base_case_line =
 489     CaseLine of rule_elem (* case/default header *) * statement dots
 490   | OptCase of case_line
 491
 492 and case_line = base_case_line wrap
 493
 494 and inc_file =
 495     Local of inc_elem list
 496   | NonLocal of inc_elem list
 497
 498 and inc_elem =
 499     IncPath of string
 500   | IncDots
 501
 502 and base_top_level =
 503     DECL of statement
 504   | CODE of statement dots
 505   | FILEINFO of string mcode (* old file *) * string mcode (* new file *)
 506   | ERRORWORDS of expression list
 507
 508 and top_level = base_top_level wrap
 509
 510 and rulename =
 511     CocciRulename of string option * dependency *
 512         string list * string list * exists * bool
 513   | GeneratedRulename of string option * dependency *
 514         string list * string list * exists * bool
 515   | ScriptRulename of string * dependency
 516
 517 and ruletype = Normal | Generated
 518
 519 and rule =
 520     CocciRule of string (* name *) *
 521         (dependency * string list (* dropped isos *) * exists) * top_level list
 522         * bool list * ruletype
 523   | ScriptRule of string * dependency * (string * meta_name) list * string
 524
 525 and dependency =
 526     Dep of string (* rule applies for the current binding *)
 527   | AntiDep of string (* rule doesn't apply for the current binding *)
 528   | EverDep of string (* rule applies for some binding *)
 529   | NeverDep of string (* rule never applies for any binding *)
 530   | AndDep of dependency * dependency
 531   | OrDep of dependency * dependency
 532   | NoDep
 533
 534 and rule_with_metavars = metavar list * rule
 535
 536 and anything =
 537     FullTypeTag         of fullType
 538   | BaseTypeTag         of baseType
 539   | StructUnionTag      of structUnion
 540   | SignTag             of sign
 541   | IdentTag            of ident
 542   | ExpressionTag       of expression
 543   | ConstantTag         of constant
 544   | UnaryOpTag          of unaryOp
 545   | AssignOpTag         of assignOp
 546   | FixOpTag            of fixOp
 547   | BinaryOpTag         of binaryOp
 548   | ArithOpTag          of arithOp
 549   | LogicalOpTag        of logicalOp
 550   | DeclarationTag      of declaration
 551   | InitTag             of initialiser
 552   | StorageTag          of storage
 553   | IncFileTag          of inc_file
 554   | Rule_elemTag        of rule_elem
 555   | StatementTag        of statement
 556   | CaseLineTag         of case_line
 557   | ConstVolTag         of const_vol
 558   | Token               of string * info option
 559   | Code                of top_level
 560   | ExprDotsTag         of expression dots
 561   | ParamDotsTag        of parameterTypeDef dots
 562   | StmtDotsTag         of statement dots
 563   | DeclDotsTag         of declaration dots
 564   | TypeCTag            of typeC
 565   | ParamTag            of parameterTypeDef
 566   | SgrepStartTag       of string
 567   | SgrepEndTag         of string
 568
 569 (* --------------------------------------------------------------------- *)
 570
 571 and exists = Exists | Forall | ReverseForall | Undetermined
 572
 573 (* --------------------------------------------------------------------- *)
 574
 575 let mkToken x = Token (x,None)
 576
 577 (* --------------------------------------------------------------------- *)
 578
 579 let rewrap model x         = {model with node = x}
 580 let rewrap_mcode (_,a,b,c) x = (x,a,b,c)
 581 let unwrap x               = x.node
 582 let unwrap_mcode (x,_,_,_)  = x
 583 let get_mcodekind (_,_,x,_) = x
 584 let get_line x             = x.node_line
 585 let get_mcode_line (_,l,_,_) = l.line
 586 let get_fvs x              = x.free_vars
 587 let set_fvs fvs x          = {x with free_vars = fvs}
 588 let get_mfvs x             = x.minus_free_vars
 589 let set_mfvs mfvs x        = {x with minus_free_vars = mfvs}
 590 let get_fresh x            = x.fresh_vars
 591 let get_inherited x        = x.inherited
 592 let get_saved x            = x.saved_witness
 593 let get_dots_bef_aft x     = x.bef_aft
 594 let set_dots_bef_aft d x   = {x with bef_aft = d}
 595 let get_pos x              = x.pos_info
 596 let set_pos x pos          = {x with pos_info = pos}
 597 let get_test_exp x      = x.true_if_test_exp
 598 let set_test_exp x      = {x with true_if_test_exp = true}
 599 let get_isos x             = x.iso_info
 600 let set_isos x isos        = {x with iso_info = isos}
 601 let get_pos_var (_,_,_,p)  = p
 602 let set_pos_var vr (a,b,c,_) = (a,b,c,vr)
 603 let drop_pos (a,b,c,_)     = (a,b,c,NoMetaPos)
 604
 605 let get_wcfvs (whencode : ('a wrap, 'b wrap) whencode list) =
 606   Common.union_all
 607     (List.map
 608        (function
 609            WhenNot(a) -> get_fvs a
 610          | WhenAlways(a) -> get_fvs a
 611          | WhenModifier(_) -> []
 612          | WhenNotTrue(e) -> get_fvs e
 613          | WhenNotFalse(e) -> get_fvs e)
 614        whencode)
 615
 616 (* --------------------------------------------------------------------- *)
 617
 618 let get_meta_name = function
 619     MetaIdDecl(ar,nm) -> nm
 620   | MetaFreshIdDecl(ar,nm) -> nm
 621   | MetaTypeDecl(ar,nm) -> nm
 622   | MetaListlenDecl(nm) -> nm
 623   | MetaParamDecl(ar,nm) -> nm
 624   | MetaParamListDecl(ar,nm,nm1) -> nm
 625   | MetaConstDecl(ar,nm,ty) -> nm
 626   | MetaErrDecl(ar,nm) -> nm
 627   | MetaExpDecl(ar,nm,ty) -> nm
 628   | MetaIdExpDecl(ar,nm,ty) -> nm
 629   | MetaLocalIdExpDecl(ar,nm,ty) -> nm
 630   | MetaExpListDecl(ar,nm,nm1) -> nm
 631   | MetaStmDecl(ar,nm) -> nm
 632   | MetaStmListDecl(ar,nm) -> nm
 633   | MetaFuncDecl(ar,nm) -> nm
 634   | MetaLocalFuncDecl(ar,nm) -> nm
 635   | MetaPosDecl(ar,nm) -> nm
 636   | MetaDeclarerDecl(ar,nm) -> nm
 637   | MetaIteratorDecl(ar,nm) -> nm
 638
 639 (* --------------------------------------------------------------------- *)
 640
 641 let no_info = { line = 0; column = 0; strbef = []; straft = [] }
 642
 643 let make_term x =
 644   {node = x;
 645     node_line = 0;
 646     free_vars = [];
 647     minus_free_vars = [];
 648     fresh_vars = [];
 649     inherited = [];
 650     saved_witness = [];
 651     bef_aft = NoDots;
 652     pos_info = None;
 653     true_if_test_exp = false;
 654     iso_info = [] }
 655
 656 let make_meta_rule_elem s d (fvs,fresh,inh) =
 657   {(make_term
 658       (MetaRuleElem((("",s),no_info,d,NoMetaPos),Type_cocci.Unitary,false)))
 659   with free_vars = fvs; fresh_vars = fresh; inherited = inh}
 660
 661 let make_meta_decl s d (fvs,fresh,inh) =
 662   {(make_term
 663       (MetaDecl((("",s),no_info,d,NoMetaPos),Type_cocci.Unitary,false))) with
 664     free_vars = fvs; fresh_vars = fresh; inherited = inh}
 665
 666 let make_mcode x = (x,no_info,CONTEXT(NoPos,NOTHING),NoMetaPos)
 667
 668 (* --------------------------------------------------------------------- *)
 669
 670 let equal_pos x y = x = y
 671
 672 (* --------------------------------------------------------------------- *)
 673
 674 let undots x =
 675   match unwrap x with
 676     DOTS    e -> e
 677   | CIRCLES e -> e
 678   | STARS   e -> e