parsing_cocci/ast_cocci.mli

   1 (*
   2  * Copyright 2010, INRIA, University of Copenhagen
   3  * Julia Lawall, Rene Rydhof Hansen, Gilles Muller, Nicolas Palix
   4  * Copyright 2005-2009, Ecole des Mines de Nantes, University of Copenhagen
   5  * Yoann Padioleau, Julia Lawall, Rene Rydhof Hansen, Henrik Stuart, Gilles Muller, Nicolas Palix
   6  * This file is part of Coccinelle.
   7  *
   8  * Coccinelle is free software: you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation, according to version 2 of the License.
  11  *
  12  * Coccinelle is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with Coccinelle.  If not, see <http://www.gnu.org/licenses/>.
  19  *
  20  * The authors reserve the right to distribute this or future versions of
  21  * Coccinelle under other licenses.
  22  *)
  23
  24
  25 (* --------------------------------------------------------------------- *)
  26 (* Modified code *)
  27
  28 type added_string = Noindent of string | Indent of string | Space of string
  29
  30 type info = { line : int; column : int;
  31               strbef : (added_string * int (* line *) * int (* col *)) list;
  32               straft : (added_string * int (* line *) * int (* col *)) list }
  33 type line = int
  34 type meta_name = string * string
  35 type 'a wrap =
  36     {node : 'a;
  37       node_line : line;
  38       free_vars : meta_name list; (*free vars*)
  39       minus_free_vars : meta_name list; (*minus free vars*)
  40       fresh_vars : (meta_name * seed) list; (*fresh vars*)
  41       inherited : meta_name list; (*inherited vars*)
  42       saved_witness : meta_name list; (*witness vars*)
  43       bef_aft : dots_bef_aft;
  44       pos_info : meta_name mcode option; (* pos info, try not to duplicate *)
  45       true_if_test_exp : bool;(* true if "test_exp from iso", only for exprs *)
  46       (* the following is only for declarations *)
  47       safe_for_multi_decls : bool;
  48       (* isos relevant to the term; ultimately only used for rule_elems *)
  49       iso_info : (string*anything) list }
  50
  51 and 'a befaft =
  52     BEFORE      of 'a list list * count
  53   | AFTER       of 'a list list * count
  54   | BEFOREAFTER of 'a list list * 'a list list * count
  55   | NOTHING
  56
  57 and 'a replacement = REPLACEMENT of 'a list list * count | NOREPLACEMENT
  58
  59 and 'a mcode = 'a * info * mcodekind * meta_pos list (* pos variables *)
  60  (* pos is an offset indicating where in the C code the mcodekind has an
  61  effect *)
  62 and adjacency = ALLMINUS | ADJ of int
  63  and mcodekind =
  64     MINUS       of pos * int list * adjacency * anything replacement
  65   | CONTEXT     of pos * anything befaft
  66   | PLUS        of count
  67  and count = ONE (* + *) | MANY (* ++ *)
  68  and fixpos =
  69     Real of int (* charpos *) | Virt of int * int (* charpos + offset *)
  70  and pos = NoPos | DontCarePos | FixPos of (fixpos * fixpos)
  71
  72 and dots_bef_aft =
  73     NoDots
  74   | AddingBetweenDots of statement * int (*index of let var*)
  75   | DroppingBetweenDots of statement * int (*index of let var*)
  76
  77 and inherited = Type_cocci.inherited
  78 and keep_binding = Type_cocci.keep_binding
  79 and multi = bool (*true if a nest is one or more, false if it is zero or more*)
  80
  81 and end_info =
  82     meta_name list (*free vars*) * (meta_name * seed) list (*fresh*) *
  83       meta_name list (*inherited vars*) * mcodekind
  84
  85 (* --------------------------------------------------------------------- *)
  86 (* Metavariables *)
  87
  88 and arity = UNIQUE | OPT | MULTI | NONE
  89
  90 and metavar =
  91     MetaMetaDecl of arity * meta_name (* name *)
  92   | MetaIdDecl of arity * meta_name (* name *)
  93   | MetaFreshIdDecl of meta_name (* name *) * seed (* seed *)
  94   | MetaTypeDecl of arity * meta_name (* name *)
  95   | MetaInitDecl of arity * meta_name (* name *)
  96   | MetaInitListDecl of arity * meta_name (* name *) * list_len (*len*)
  97   | MetaListlenDecl of meta_name (* name *)
  98   | MetaParamDecl of arity * meta_name (* name *)
  99   | MetaParamListDecl of arity * meta_name (*name*) * list_len (*len*)
 100   | MetaConstDecl of
 101       arity * meta_name (* name *) * Type_cocci.typeC list option
 102   | MetaErrDecl of arity * meta_name (* name *)
 103   | MetaExpDecl of
 104       arity * meta_name (* name *) * Type_cocci.typeC list option
 105   | MetaIdExpDecl of
 106       arity * meta_name (* name *) * Type_cocci.typeC list option
 107   | MetaLocalIdExpDecl of
 108       arity * meta_name (* name *) * Type_cocci.typeC list option
 109   | MetaExpListDecl of arity * meta_name (*name*) * list_len (*len*)
 110   | MetaDeclDecl of arity * meta_name (* name *)
 111   | MetaFieldDecl of arity * meta_name (* name *)
 112   | MetaFieldListDecl of arity * meta_name (* name *) * list_len (*len*)
 113   | MetaStmDecl of arity * meta_name (* name *)
 114   | MetaStmListDecl of arity * meta_name (* name *)
 115   | MetaFuncDecl of arity * meta_name (* name *)
 116   | MetaLocalFuncDecl of arity * meta_name (* name *)
 117   | MetaPosDecl of arity * meta_name (* name *)
 118   | MetaDeclarerDecl of arity * meta_name (* name *)
 119   | MetaIteratorDecl of arity * meta_name (* name *)
 120
 121 and list_len = AnyLen | MetaLen of meta_name | CstLen of int
 122
 123 and seed = NoVal | StringSeed of string | ListSeed of seed_elem list
 124 and seed_elem = SeedString of string | SeedId of meta_name
 125
 126 (* --------------------------------------------------------------------- *)
 127 (* --------------------------------------------------------------------- *)
 128 (* Dots *)
 129
 130 and 'a base_dots =
 131     DOTS of 'a list
 132   | CIRCLES of 'a list
 133   | STARS of 'a list
 134
 135 and 'a dots = 'a base_dots wrap
 136
 137 (* --------------------------------------------------------------------- *)
 138 (* Identifier *)
 139
 140 and base_ident =
 141     Id            of string mcode
 142   | MetaId        of meta_name mcode * idconstraint * keep_binding * inherited
 143   | MetaFunc      of meta_name mcode * idconstraint * keep_binding * inherited
 144   | MetaLocalFunc of meta_name mcode * idconstraint * keep_binding * inherited
 145
 146   | DisjId        of ident list
 147   | OptIdent      of ident
 148   | UniqueIdent   of ident
 149
 150 and ident = base_ident wrap
 151
 152 (* --------------------------------------------------------------------- *)
 153 (* Expression *)
 154
 155 and base_expression =
 156     Ident          of ident
 157   | Constant       of constant mcode
 158   | FunCall        of expression * string mcode (* ( *) *
 159                       expression dots * string mcode (* ) *)
 160   | Assignment     of expression * assignOp mcode * expression * bool
 161   | CondExpr       of expression * string mcode (* ? *) * expression option *
 162                       string mcode (* : *) * expression
 163   | Postfix        of expression * fixOp mcode
 164   | Infix          of expression * fixOp mcode
 165   | Unary          of expression * unaryOp mcode
 166   | Binary         of expression * binaryOp mcode * expression
 167   | Nested         of expression * binaryOp mcode * expression
 168   | ArrayAccess    of expression * string mcode (* [ *) * expression *
 169                       string mcode (* ] *)
 170   | RecordAccess   of expression * string mcode (* . *) * ident
 171   | RecordPtAccess of expression * string mcode (* -> *) * ident
 172   | Cast           of string mcode (* ( *) * fullType * string mcode (* ) *) *
 173                       expression
 174
 175   | SizeOfExpr     of string mcode (* sizeof *) * expression
 176   | SizeOfType     of string mcode (* sizeof *) * string mcode (* ( *) *
 177                       fullType * string mcode (* ) *)
 178   | TypeExp        of fullType
 179
 180   | Paren          of string mcode (* ( *) * expression *
 181                       string mcode (* ) *)
 182
 183   | MetaErr        of meta_name mcode * constraints * keep_binding *
 184                       inherited
 185   | MetaExpr       of meta_name mcode * constraints * keep_binding *
 186                       Type_cocci.typeC list option * form * inherited
 187   | MetaExprList   of meta_name mcode * listlen *
 188                       keep_binding * inherited (* only in arg lists *)
 189
 190   | EComma         of string mcode (* only in arg lists *)
 191
 192   | DisjExpr       of expression list
 193   | NestExpr       of string mcode (* <.../<+... *) *
 194                       expression dots *
 195                       string mcode (* ...>/...+> *) *
 196                       expression option * multi
 197
 198   (* can appear in arg lists, and also inside Nest, as in:
 199    if(< ... X ... Y ...>)
 200    In the following, the expression option is the WHEN  *)
 201   | Edots          of string mcode (* ... *) * expression option
 202   | Ecircles       of string mcode (* ooo *) * expression option
 203   | Estars         of string mcode (* *** *) * expression option
 204
 205   | OptExp         of expression
 206   | UniqueExp      of expression
 207
 208 and constraints =
 209     NoConstraint
 210   | NotIdCstrt     of reconstraint
 211   | NotExpCstrt    of expression list
 212   | SubExpCstrt    of meta_name list
 213
 214 (* Constraints on Meta-* Identifiers, Functions *)
 215 and idconstraint =
 216     IdNoConstraint
 217   | IdNegIdSet         of string list * meta_name list
 218   | IdRegExpConstraint of reconstraint
 219
 220 and reconstraint =
 221   | IdRegExp        of string * Regexp.regexp
 222   | IdNotRegExp     of string * Regexp.regexp
 223
 224 and form = ANY | ID | LocalID | CONST (* form for MetaExp *)
 225
 226 and expression = base_expression wrap
 227
 228 and listlen =
 229     MetaListLen of meta_name mcode * keep_binding * inherited
 230   | CstListLen of int
 231   | AnyListLen
 232
 233 and  unaryOp = GetRef | GetRefLabel | DeRef | UnPlus |  UnMinus | Tilde | Not
 234 and  assignOp = SimpleAssign | OpAssign of arithOp
 235 and  fixOp = Dec | Inc
 236
 237 and  binaryOp = Arith of arithOp | Logical of logicalOp
 238 and  arithOp =
 239     Plus | Minus | Mul | Div | Mod | DecLeft | DecRight | And | Or | Xor
 240 and  logicalOp = Inf | Sup | InfEq | SupEq | Eq | NotEq | AndLog | OrLog
 241
 242 and constant =
 243     String of string
 244   | Char   of string
 245   | Int    of string
 246   | Float  of string
 247
 248 (* --------------------------------------------------------------------- *)
 249 (* Types *)
 250
 251 and base_fullType =
 252     Type            of const_vol mcode option * typeC
 253   | DisjType        of fullType list (* only after iso *)
 254   | OptType         of fullType
 255   | UniqueType      of fullType
 256
 257 and base_typeC =
 258     BaseType        of baseType * string mcode list (* Yoann style *)
 259   | SignedT         of sign mcode * typeC option
 260   | Pointer         of fullType * string mcode (* * *)
 261   | FunctionPointer of fullType *
 262                   string mcode(* ( *)*string mcode(* * *)*string mcode(* ) *)*
 263                   string mcode (* ( *)*parameter_list*string mcode(* ) *)
 264   | FunctionType     of bool (* true if all minus for dropping return type *) *
 265                    fullType option *
 266                    string mcode (* ( *) * parameter_list *
 267                    string mcode (* ) *)
 268   | Array           of fullType * string mcode (* [ *) *
 269                        expression option * string mcode (* ] *)
 270   | EnumName        of string mcode (*enum*) * ident option (* name *)
 271   | EnumDef  of fullType (* either EnumName or metavar *) *
 272         string mcode (* { *) * expression dots * string mcode (* } *)
 273   | StructUnionName of structUnion mcode * ident option (* name *)
 274   | StructUnionDef  of fullType (* either StructUnionName or metavar *) *
 275         string mcode (* { *) * declaration dots * string mcode (* } *)
 276   | TypeName        of string mcode
 277
 278   | MetaType        of meta_name mcode * keep_binding * inherited
 279
 280 and fullType = base_fullType wrap
 281 and typeC = base_typeC wrap
 282
 283 and baseType = VoidType | CharType | ShortType | ShortIntType | IntType
 284 | DoubleType | LongDoubleType | FloatType
 285 | LongType | LongIntType | LongLongType | LongLongIntType
 286 | SizeType | SSizeType | PtrDiffType
 287
 288 and structUnion = Struct | Union
 289
 290 and sign = Signed | Unsigned
 291
 292 and const_vol = Const | Volatile
 293
 294 (* --------------------------------------------------------------------- *)
 295 (* Variable declaration *)
 296 (* Even if the Cocci program specifies a list of declarations, they are
 297    split out into multiple declarations of a single variable each. *)
 298
 299 and base_declaration =
 300     Init of storage mcode option * fullType * ident * string mcode (*=*) *
 301         initialiser * string mcode (*;*)
 302   | UnInit of storage mcode option * fullType * ident * string mcode (* ; *)
 303   | TyDecl of fullType * string mcode (* ; *)
 304   | MacroDecl of ident (* name *) * string mcode (* ( *) *
 305         expression dots * string mcode (* ) *) * string mcode (* ; *)
 306   | Typedef of string mcode (*typedef*) * fullType * typeC * string mcode (*;*)
 307   | DisjDecl   of declaration list
 308   | Ddots    of string mcode (* ... *) * declaration option (* whencode *)
 309
 310   | MetaDecl of meta_name mcode * keep_binding * inherited
 311   | MetaField of meta_name mcode * keep_binding * inherited
 312   | MetaFieldList of meta_name mcode * listlen * keep_binding * inherited
 313
 314   | OptDecl    of declaration
 315   | UniqueDecl of declaration
 316
 317 and declaration = base_declaration wrap
 318
 319 (* --------------------------------------------------------------------- *)
 320 (* Initializers *)
 321
 322 and base_initialiser =
 323     MetaInit of meta_name mcode * keep_binding * inherited
 324   | MetaInitList of meta_name mcode * listlen * keep_binding * inherited
 325   | InitExpr of expression
 326   | ArInitList of string mcode (*{*) * initialiser dots * string mcode (*}*)
 327   | StrInitList of bool (* true if all are - *) *
 328         string mcode (*{*) * initialiser list * string mcode (*}*) *
 329         initialiser list (* whencode: elements that shouldn't appear in init *)
 330   | InitGccExt of
 331       designator list (* name *) * string mcode (*=*) *
 332         initialiser (* gccext: *)
 333   | InitGccName of ident (* name *) * string mcode (*:*) *
 334         initialiser
 335   | IComma of string mcode (* , *)
 336   | Idots  of string mcode (* ... *) * initialiser option (* whencode *)
 337   | OptIni    of initialiser
 338   | UniqueIni of initialiser
 339
 340 and designator =
 341     DesignatorField of string mcode (* . *) * ident
 342   | DesignatorIndex of string mcode (* [ *) * expression * string mcode (* ] *)
 343   | DesignatorRange of
 344       string mcode (* [ *) * expression * string mcode (* ... *) *
 345       expression * string mcode (* ] *)
 346
 347 and initialiser = base_initialiser wrap
 348
 349 (* --------------------------------------------------------------------- *)
 350 (* Parameter *)
 351
 352 and base_parameterTypeDef =
 353     VoidParam     of fullType
 354   | Param         of fullType * ident option
 355
 356   | MetaParam     of meta_name mcode * keep_binding * inherited
 357   | MetaParamList of meta_name mcode * listlen * keep_binding * inherited
 358
 359   | PComma        of string mcode
 360
 361   | Pdots         of string mcode (* ... *)
 362   | Pcircles      of string mcode (* ooo *)
 363
 364   | OptParam      of parameterTypeDef
 365   | UniqueParam   of parameterTypeDef
 366
 367 and parameterTypeDef = base_parameterTypeDef wrap
 368
 369 and parameter_list = parameterTypeDef dots
 370
 371 (* --------------------------------------------------------------------- *)
 372 (* #define Parameters *)
 373
 374 and base_define_param =
 375     DParam        of ident
 376   | DPComma       of string mcode
 377   | DPdots        of string mcode (* ... *)
 378   | DPcircles     of string mcode (* ooo *)
 379   | OptDParam     of define_param
 380   | UniqueDParam  of define_param
 381
 382 and define_param = base_define_param wrap
 383
 384 and base_define_parameters =
 385     NoParams
 386   | DParams      of string mcode(*( *) * define_param dots * string mcode(* )*)
 387
 388 and define_parameters = base_define_parameters wrap
 389
 390 (* --------------------------------------------------------------------- *)
 391 (* positions *)
 392
 393 (* PER = keep bindings separate, ANY = collect them *)
 394 and meta_collect = PER | ALL
 395
 396 and meta_pos =
 397     MetaPos of meta_name mcode * meta_name list *
 398         meta_collect * keep_binding * inherited
 399
 400 (* --------------------------------------------------------------------- *)
 401 (* Function declaration *)
 402
 403 and storage = Static | Auto | Register | Extern
 404
 405 (* --------------------------------------------------------------------- *)
 406 (* Top-level code *)
 407
 408 and base_rule_elem =
 409     FunHeader     of mcodekind (* before the function header *) *
 410                      bool (* true if all minus, for dropping static, etc *) *
 411                      fninfo list * ident (* name *) *
 412                      string mcode (* ( *) * parameter_list *
 413                      string mcode (* ) *)
 414   | Decl          of mcodekind (* before the decl *) *
 415                      bool (* true if all minus *) * declaration
 416
 417   | SeqStart      of string mcode (* { *)
 418   | SeqEnd        of string mcode (* } *)
 419
 420   | ExprStatement of expression option * string mcode (*;*)
 421   | IfHeader      of string mcode (* if *) * string mcode (* ( *) *
 422                      expression * string mcode (* ) *)
 423   | Else          of string mcode (* else *)
 424   | WhileHeader   of string mcode (* while *) * string mcode (* ( *) *
 425                      expression * string mcode (* ) *)
 426   | DoHeader      of string mcode (* do *)
 427   | WhileTail     of string mcode (* while *) * string mcode (* ( *) *
 428                      expression * string mcode (* ) *) *
 429                      string mcode (* ; *)
 430   | ForHeader     of string mcode (* for *) * string mcode (* ( *) *
 431                      expression option * string mcode (*;*) *
 432                      expression option * string mcode (*;*) *
 433                      expression option * string mcode (* ) *)
 434   | IteratorHeader of ident (* name *) * string mcode (* ( *) *
 435                      expression dots * string mcode (* ) *)
 436   | SwitchHeader  of string mcode (* switch *) * string mcode (* ( *) *
 437                      expression * string mcode (* ) *)
 438   | Break         of string mcode (* break *) * string mcode (* ; *)
 439   | Continue      of string mcode (* continue *) * string mcode (* ; *)
 440   | Label         of ident * string mcode (* : *)
 441   | Goto          of string mcode (* goto *) * ident * string mcode (* ; *)
 442   | Return        of string mcode (* return *) * string mcode (* ; *)
 443   | ReturnExpr    of string mcode (* return *) * expression *
 444                      string mcode (* ; *)
 445
 446   | MetaRuleElem  of meta_name mcode * keep_binding * inherited
 447   | MetaStmt      of meta_name mcode * keep_binding * metaStmtInfo *
 448                      inherited
 449   | MetaStmtList  of meta_name mcode * keep_binding * inherited
 450
 451   | Exp           of expression
 452   | TopExp        of expression (* for macros body *)
 453   | Ty            of fullType (* only at top level *)
 454   | TopInit       of initialiser (* only at top level *)
 455   | Include       of string mcode (*#include*) * inc_file mcode (*file *)
 456   | Undef         of string mcode (* #define *) * ident (* name *)
 457   | DefineHeader  of string mcode (* #define *) * ident (* name *) *
 458                      define_parameters (*params*)
 459   | Case          of string mcode (* case *) * expression * string mcode (*:*)
 460   | Default       of string mcode (* default *) * string mcode (*:*)
 461   | DisjRuleElem  of rule_elem list
 462
 463 and fninfo =
 464     FStorage of storage mcode
 465   | FType of fullType
 466   | FInline of string mcode
 467   | FAttr of string mcode
 468
 469 and metaStmtInfo =
 470     NotSequencible | SequencibleAfterDots of dots_whencode list | Sequencible
 471
 472 and rule_elem = base_rule_elem wrap
 473
 474 and base_statement =
 475     Seq           of rule_elem (* { *) *
 476                      statement dots * rule_elem (* } *)
 477   | IfThen        of rule_elem (* header *) * statement * end_info
 478   | IfThenElse    of rule_elem (* header *) * statement *
 479                      rule_elem (* else *) * statement * end_info
 480   | While         of rule_elem (* header *) * statement * end_info
 481   | Do            of rule_elem (* do *) * statement * rule_elem (* tail *)
 482   | For           of rule_elem (* header *) * statement * end_info
 483   | Iterator      of rule_elem (* header *) * statement * end_info (*enditer*)
 484   | Switch        of rule_elem (* header *) * rule_elem (* { *) *
 485                      statement (*decl*) dots * case_line list * rule_elem(*}*)
 486   | Atomic        of rule_elem
 487   | Disj          of statement dots list
 488   | Nest          of string mcode (* <.../<+... *) * statement dots *
 489                      string mcode (* ...>/...+> *) *
 490                      (statement dots,statement) whencode list * multi *
 491                      dots_whencode list * dots_whencode list
 492   | FunDecl       of rule_elem (* header *) * rule_elem (* { *) *
 493                      statement dots * rule_elem (* } *)
 494   | Define        of rule_elem (* header *) * statement dots
 495   | Dots          of string mcode (* ... *) *
 496                      (statement dots,statement) whencode list *
 497                      dots_whencode list * dots_whencode list
 498   | Circles       of string mcode (* ooo *) *
 499                      (statement dots,statement) whencode list *
 500                      dots_whencode list * dots_whencode list
 501   | Stars         of string mcode (* *** *) *
 502                      (statement dots,statement) whencode list *
 503                      dots_whencode list * dots_whencode list
 504   | OptStm        of statement
 505   | UniqueStm     of statement
 506
 507 and ('a,'b) whencode =
 508     WhenNot of 'a
 509   | WhenAlways of 'b
 510   | WhenModifier of when_modifier
 511   | WhenNotTrue of rule_elem
 512   | WhenNotFalse of rule_elem
 513
 514 and when_modifier =
 515     WhenAny
 516   | WhenStrict
 517   | WhenForall
 518   | WhenExists
 519
 520 and dots_whencode =
 521     WParen of rule_elem * meta_name (*pren_var*)
 522   | Other of statement
 523   | Other_dots of statement dots
 524
 525 and statement = base_statement wrap
 526
 527 and base_case_line =
 528     CaseLine of rule_elem (* case/default header *) * statement dots
 529   | OptCase of case_line
 530
 531 and case_line = base_case_line wrap
 532
 533 and inc_file =
 534     Local of inc_elem list
 535   | NonLocal of inc_elem list
 536
 537 and inc_elem =
 538     IncPath of string
 539   | IncDots
 540
 541 and base_top_level =
 542     NONDECL of statement (* cannot match all of a top-level declaration *)
 543   | CODE of statement dots
 544   | FILEINFO of string mcode (* old file *) * string mcode (* new file *)
 545   | ERRORWORDS of expression list
 546
 547 and top_level = base_top_level wrap
 548
 549 and rulename =
 550     CocciRulename of string option * dependency * string list * string list *
 551         exists * bool
 552       (* true if the whole thing is an expression *)
 553   | GeneratedRulename of string option * dependency *
 554         string list * string list * exists * bool
 555       (* true if the whole thing is an expression *)
 556   | ScriptRulename of string option (* name *) * string (* language *) *
 557         dependency
 558   | InitialScriptRulename of string option (* name *) * string (* language *) *
 559         dependency
 560   | FinalScriptRulename of string option (* name *) * string (* language *) *
 561         dependency
 562
 563 and ruletype = Normal | Generated
 564
 565 and rule =
 566     CocciRule of string (* name *) *
 567         (dependency * string list (* dropped isos *) * exists) *
 568         top_level list * bool list (* true if generates an exp *) * ruletype
 569   | ScriptRule of string (* name *) *
 570       string * dependency *
 571         (script_meta_name * meta_name * metavar) list *
 572         meta_name list (*script vars*) * string
 573   | InitialScriptRule of  string (* name *) *
 574         string * dependency * string
 575   | FinalScriptRule of  string (* name *) *
 576         string * dependency * string
 577
 578 and script_meta_name = string option (*string*) * string option (*ast*)
 579
 580 and dependency =
 581     Dep of string (* rule applies for the current binding *)
 582   | AntiDep of string (* rule doesn't apply for the current binding *)
 583   | EverDep of string (* rule applies for some binding *)
 584   | NeverDep of string (* rule never applies for any binding *)
 585   | AndDep of dependency * dependency
 586   | OrDep of dependency * dependency
 587   | NoDep | FailDep
 588
 589 and rule_with_metavars = metavar list * rule
 590
 591 and anything =
 592     FullTypeTag         of fullType
 593   | BaseTypeTag         of baseType
 594   | StructUnionTag      of structUnion
 595   | SignTag             of sign
 596   | IdentTag            of ident
 597   | ExpressionTag       of expression
 598   | ConstantTag         of constant
 599   | UnaryOpTag          of unaryOp
 600   | AssignOpTag         of assignOp
 601   | FixOpTag            of fixOp
 602   | BinaryOpTag         of binaryOp
 603   | ArithOpTag          of arithOp
 604   | LogicalOpTag        of logicalOp
 605   | DeclarationTag      of declaration
 606   | InitTag             of initialiser
 607   | StorageTag          of storage
 608   | IncFileTag          of inc_file
 609   | Rule_elemTag        of rule_elem
 610   | StatementTag        of statement
 611   | CaseLineTag         of case_line
 612   | ConstVolTag         of const_vol
 613   | Token               of string * info option
 614   | Pragma              of added_string list
 615   | Code                of top_level
 616   | ExprDotsTag         of expression dots
 617   | ParamDotsTag        of parameterTypeDef dots
 618   | StmtDotsTag         of statement dots
 619   | DeclDotsTag         of declaration dots
 620   | TypeCTag            of typeC
 621   | ParamTag            of parameterTypeDef
 622   | SgrepStartTag       of string
 623   | SgrepEndTag         of string
 624
 625 (* --------------------------------------------------------------------- *)
 626
 627 and exists = Exists | Forall | Undetermined
 628
 629 (* --------------------------------------------------------------------- *)
 630
 631 val mkToken : string -> anything
 632
 633 val undots : 'a dots -> 'a list
 634
 635 val lub_count : count -> count -> count
 636
 637 (* --------------------------------------------------------------------- *)
 638
 639 val rewrap : 'a wrap -> 'b -> 'b wrap
 640 val rewrap_mcode : 'a mcode -> 'a -> 'a mcode
 641 val unwrap : 'a wrap -> 'a
 642 val unwrap_mcode : 'a mcode -> 'a
 643 val get_mcodekind : 'a mcode -> mcodekind
 644 val get_line : 'a wrap -> line
 645 val get_mcode_line : 'a mcode -> line
 646 val get_mcode_col : 'a mcode -> int
 647 val get_fvs : 'a wrap -> meta_name list
 648 val get_wcfvs : ('a wrap,'b wrap) whencode list -> meta_name list
 649 val set_fvs : meta_name list -> 'a wrap -> 'a wrap
 650 val get_mfvs : 'a wrap -> meta_name list
 651 val set_mfvs : meta_name list -> 'a wrap -> 'a wrap
 652 val get_fresh : 'a wrap -> (meta_name * seed) list
 653 val get_inherited : 'a wrap -> meta_name list
 654 val get_saved : 'a wrap -> meta_name list
 655 val get_dots_bef_aft : statement -> dots_bef_aft
 656 val set_dots_bef_aft : dots_bef_aft -> statement -> statement
 657 val get_pos : 'a wrap -> meta_name mcode option
 658 val set_pos : 'a wrap -> meta_name mcode option -> 'a wrap
 659 val get_test_exp : 'a wrap -> bool
 660 val set_test_exp : expression -> expression
 661 val get_safe_decl : 'a wrap -> bool
 662 val get_isos : 'a wrap -> (string*anything) list
 663 val set_isos : 'a wrap -> (string*anything) list -> 'a wrap
 664 val get_pos_var : 'a mcode -> meta_pos list
 665 val set_pos_var : meta_pos list -> 'a mcode -> 'a mcode
 666 val drop_pos : 'a mcode -> 'a mcode
 667
 668 val get_meta_name : metavar -> meta_name
 669
 670 val tag2c : anything -> string
 671
 672 val no_info : info
 673
 674 val make_meta_rule_elem :
 675     string -> mcodekind ->
 676       (meta_name list * (meta_name * seed) list * meta_name list) ->
 677       rule_elem
 678
 679 val make_meta_decl :
 680     string -> mcodekind ->
 681       (meta_name list * (meta_name * seed) list * meta_name list) ->
 682       declaration
 683
 684 val make_term : 'a -> 'a wrap
 685 val make_mcode : 'a -> 'a mcode
 686
 687 val equal_pos : fixpos -> fixpos -> bool