mutated_ocaml / typing / typedtree.ml

  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
(***********************************************************************)
(*                                                                     *)
(*                                OCaml                                *)
(*                                                                     *)
(*            Xavier Leroy, projet Cristal, INRIA Rocquencourt         *)
(*                                                                     *)
(*  Copyright 1996 Institut National de Recherche en Informatique et   *)
(*  en Automatique.  All rights reserved.  This file is distributed    *)
(*  under the terms of the Q Public License version 1.0.               *)
(*                                                                     *)
(***********************************************************************)

(* $Id: typedtree.ml 12681 2012-07-10 08:33:16Z garrigue $ *)

(* Abstract syntax tree after typing *)

open Misc
open Asttypes
open Types

(* Value expressions for the core language *)

type partial = Partial | Total
type optional = Required | Optional

type pattern =
  { pat_desc: pattern_desc;
    pat_loc: Location.t;
    pat_extra : (pat_extra * Location.t) list;
    pat_type: type_expr;
    mutable pat_env: Env.t }

and pat_extra =
  | Tpat_constraint of core_type
  | Tpat_type of Path.t * Longident.t loc
  | Tpat_unpack

and pattern_desc =
    Tpat_any
  | Tpat_var of Ident.t * string loc
  | Tpat_alias of pattern * Ident.t * string loc
  | Tpat_constant of constant
  | Tpat_tuple of pattern list
  | Tpat_construct of
      Path.t * Longident.t loc * constructor_description * pattern list * bool
  | Tpat_variant of label * pattern option * row_desc ref
  | Tpat_record of
      (Path.t * Longident.t loc * label_description * pattern) list *
        closed_flag
  | Tpat_array of pattern list
  | Tpat_or of pattern * pattern * row_desc option
  | Tpat_lazy of pattern

and expression =
  { exp_desc: expression_desc;
    exp_loc: Location.t;
    exp_extra : (exp_extra * Location.t) list;
    exp_type: type_expr;
    exp_env: Env.t }

and exp_extra =
  | Texp_constraint of core_type option * core_type option
  | Texp_open of Path.t * Longident.t loc * Env.t
  | Texp_poly of core_type option
  | Texp_newtype of string

and expression_desc =
    Texp_ident of Path.t * Longident.t loc * Types.value_description
  | Texp_constant of constant
  | Texp_let of rec_flag * (pattern * expression) list * expression
  | Texp_function of label * (pattern * expression) list * partial
  | Texp_apply of expression * (label * expression option * optional) list
  | Texp_match of expression * (pattern * expression) list * partial
  | Texp_try of expression * (pattern * expression) list
  | Texp_tuple of expression list
  | Texp_construct of
      Path.t * Longident.t loc * constructor_description * expression list *
        bool
  | Texp_variant of label * expression option
  | Texp_record of
      (Path.t * Longident.t loc * label_description * expression) list *
        expression option
  | Texp_field of expression * Path.t * Longident.t loc * label_description
  | Texp_setfield of
      expression * Path.t * Longident.t loc * label_description * expression
  | Texp_array of expression list
  | Texp_ifthenelse of expression * expression * expression option
  | Texp_sequence of expression * expression
  | Texp_while of expression * expression
  | Texp_for of
      Ident.t * string loc * expression * expression * direction_flag *
        expression
  | Texp_when of expression * expression
  | Texp_send of expression * meth * expression option
  | Texp_new of Path.t * Longident.t loc * Types.class_declaration
  | Texp_instvar of Path.t * Path.t * string loc
  | Texp_setinstvar of Path.t * Path.t * string loc * expression
  | Texp_override of Path.t * (Path.t * string loc * expression) list
  | Texp_letmodule of Ident.t * string loc * module_expr * expression
  | Texp_assert of expression
  | Texp_assertfalse
  | Texp_lazy of expression
  | Texp_object of class_structure * string list
  | Texp_pack of module_expr

and meth =
    Tmeth_name of string
  | Tmeth_val of Ident.t

(* Value expressions for the class language *)

and class_expr =
  { cl_desc: class_expr_desc;
    cl_loc: Location.t;
    cl_type: Types.class_type;
    cl_env: Env.t }

and class_expr_desc =
    Tcl_ident of Path.t * Longident.t loc * core_type list (* Pcl_constr *)
  | Tcl_structure of class_structure
  | Tcl_fun of
      label * pattern * (Ident.t * string loc * expression) list * class_expr *
        partial
  | Tcl_apply of class_expr * (label * expression option * optional) list
  | Tcl_let of rec_flag *  (pattern * expression) list *
                  (Ident.t * string loc * expression) list * class_expr
  | Tcl_constraint of
      class_expr * class_type option * string list * string list * Concr.t
    (* Visible instance variables, methods and concretes methods *)

and class_structure =
  { cstr_pat : pattern;
    cstr_fields: class_field list;
    cstr_type : Types.class_signature;
    cstr_meths: Ident.t Meths.t }

and class_field =
   {
    cf_desc : class_field_desc;
    cf_loc : Location.t;
  }

and class_field_kind =
  Tcfk_virtual of core_type
| Tcfk_concrete of expression

and class_field_desc =
    Tcf_inher of
      override_flag * class_expr * string option * (string * Ident.t) list *
        (string * Ident.t) list
    (* Inherited instance variables and concrete methods *)
  | Tcf_val of
      string * string loc * mutable_flag * Ident.t * class_field_kind * bool
        (* None = virtual, true = override *)
  | Tcf_meth of string * string loc * private_flag * class_field_kind * bool
  | Tcf_constr of core_type * core_type
(*  | Tcf_let of rec_flag * (pattern * expression) list *
              (Ident.t * string loc * expression) list *)
  | Tcf_init of expression

(* Value expressions for the module language *)

and module_expr =
  { mod_desc: module_expr_desc;
    mod_loc: Location.t;
    mod_type: Types.module_type;
    mod_env: Env.t }

and module_type_constraint =
  Tmodtype_implicit
| Tmodtype_explicit of module_type

and module_expr_desc =
    Tmod_ident of Path.t * Longident.t loc
  | Tmod_structure of structure
  | Tmod_functor of Ident.t * string loc * module_type * module_expr
  | Tmod_apply of module_expr * module_expr * module_coercion
  | Tmod_constraint of
      module_expr * Types.module_type * module_type_constraint * module_coercion
  | Tmod_unpack of expression * Types.module_type

and structure = {
  str_items : structure_item list;
  str_type : Types.signature;
  str_final_env : Env.t;
}

and structure_item =
  { str_desc : structure_item_desc;
    str_loc : Location.t;
    str_env : Env.t
  }

and structure_item_desc =
    Tstr_eval of expression
  | Tstr_value of rec_flag * (pattern * expression) list
  | Tstr_primitive of Ident.t * string loc * value_description
  | Tstr_type of (Ident.t * string loc * type_declaration) list
  | Tstr_exception of Ident.t * string loc * exception_declaration
  | Tstr_exn_rebind of Ident.t * string loc * Path.t * Longident.t loc
  | Tstr_module of Ident.t * string loc * module_expr
  | Tstr_recmodule of (Ident.t * string loc * module_type * module_expr) list
  | Tstr_modtype of Ident.t * string loc * module_type
  | Tstr_open of Path.t * Longident.t loc
  | Tstr_class of (class_declaration * string list * virtual_flag) list
  | Tstr_class_type of (Ident.t * string loc * class_type_declaration) list
  | Tstr_include of module_expr * Ident.t list

and module_coercion =
    Tcoerce_none
  | Tcoerce_structure of (int * module_coercion) list
  | Tcoerce_functor of module_coercion * module_coercion
  | Tcoerce_primitive of Primitive.description

and module_type =
  { mty_desc: module_type_desc;
    mty_type : Types.module_type;
    mty_env : Env.t; (* BINANNOT ADDED *)
    mty_loc: Location.t }

and module_type_desc =
    Tmty_ident of Path.t * Longident.t loc
  | Tmty_signature of signature
  | Tmty_functor of Ident.t * string loc * module_type * module_type
  | Tmty_with of module_type * (Path.t * Longident.t loc * with_constraint) list
  | Tmty_typeof of module_expr

and signature = {
  sig_items : signature_item list;
  sig_type : Types.signature;
  sig_final_env : Env.t;
}

and signature_item =
  { sig_desc: signature_item_desc;
    sig_env : Env.t; (* BINANNOT ADDED *)
    sig_loc: Location.t }

and signature_item_desc =
    Tsig_value of Ident.t * string loc * value_description
  | Tsig_type of (Ident.t * string loc * type_declaration) list
  | Tsig_exception of Ident.t * string loc * exception_declaration
  | Tsig_module of Ident.t * string loc * module_type
  | Tsig_recmodule of (Ident.t * string loc * module_type) list
  | Tsig_modtype of Ident.t * string loc * modtype_declaration
  | Tsig_open of Path.t * Longident.t loc
  | Tsig_include of module_type * Types.signature
  | Tsig_class of class_description list
  | Tsig_class_type of class_type_declaration list

and modtype_declaration =
    Tmodtype_abstract
  | Tmodtype_manifest of module_type

and with_constraint =
    Twith_type of type_declaration
  | Twith_module of Path.t * Longident.t loc
  | Twith_typesubst of type_declaration
  | Twith_modsubst of Path.t * Longident.t loc

and core_type =
(* mutable because of [Typeclass.declare_method] *)
  { mutable ctyp_desc : core_type_desc;
    mutable ctyp_type : type_expr;
    ctyp_env : Env.t; (* BINANNOT ADDED *)
    ctyp_loc : Location.t }

and core_type_desc =
    Ttyp_any
  | Ttyp_var of string
  | Ttyp_arrow of label * core_type * core_type
  | Ttyp_tuple of core_type list
  | Ttyp_constr of Path.t * Longident.t loc * core_type list
  | Ttyp_object of core_field_type list
  | Ttyp_class of Path.t * Longident.t loc * core_type list * label list
  | Ttyp_alias of core_type * string
  | Ttyp_variant of row_field list * bool * label list option
  | Ttyp_poly of string list * core_type
  | Ttyp_package of package_type

and package_type = {
  pack_name : Path.t;
  pack_fields : (Longident.t loc * core_type) list;
  pack_type : Types.module_type;
  pack_txt : Longident.t loc;
}

and core_field_type =
  { field_desc: core_field_desc;
    field_loc: Location.t }

and core_field_desc =
    Tcfield of string * core_type
  | Tcfield_var

and row_field =
    Ttag of label * bool * core_type list
  | Tinherit of core_type

and value_description =
  { val_desc : core_type;
    val_val : Types.value_description;
    val_prim : string list;
    val_loc : Location.t;
    }

and type_declaration =
  { typ_params: string loc option list;
    typ_type : Types.type_declaration;
    typ_cstrs: (core_type * core_type * Location.t) list;
    typ_kind: type_kind;
    typ_private: private_flag;
    typ_manifest: core_type option;
    typ_variance: (bool * bool) list;
    typ_loc: Location.t }

and type_kind =
    Ttype_abstract
  | Ttype_variant of (Ident.t * string loc * core_type list * Location.t) list
  | Ttype_record of
      (Ident.t * string loc * mutable_flag * core_type * Location.t) list

and exception_declaration =
  { exn_params : core_type list;
    exn_exn : Types.exception_declaration;
    exn_loc : Location.t }

and class_type =
  { cltyp_desc: class_type_desc;
    cltyp_type : Types.class_type;
    cltyp_env : Env.t; (* BINANNOT ADDED *)
    cltyp_loc: Location.t }

and class_type_desc =
    Tcty_constr of Path.t * Longident.t loc * core_type list
  | Tcty_signature of class_signature
  | Tcty_fun of label * core_type * class_type

and class_signature = {
    csig_self : core_type;
    csig_fields : class_type_field list;
    csig_type : Types.class_signature;
    csig_loc : Location.t;
  }

and class_type_field = {
    ctf_desc : class_type_field_desc;
    ctf_loc : Location.t;
  }

and class_type_field_desc =
    Tctf_inher of class_type
  | Tctf_val of (string * mutable_flag * virtual_flag * core_type)
  | Tctf_virt  of (string * private_flag * core_type)
  | Tctf_meth  of (string * private_flag * core_type)
  | Tctf_cstr  of (core_type * core_type)

and class_declaration =
  class_expr class_infos

and class_description =
  class_type class_infos

and class_type_declaration =
  class_type class_infos

and 'a class_infos =
  { ci_virt: virtual_flag;
    ci_params: string loc list * Location.t;
    ci_id_name : string loc;
    ci_id_class: Ident.t;
    ci_id_class_type : Ident.t;
    ci_id_object : Ident.t;
    ci_id_typesharp : Ident.t;
    ci_expr: 'a;
    ci_decl: Types.class_declaration;
    ci_type_decl : Types.class_type_declaration;
    ci_variance: (bool * bool) list;
    ci_loc: Location.t }

(* Auxiliary functions over the a.s.t. *)

let iter_pattern_desc f = function
  | Tpat_alias(p, _, _) -> f p
  | Tpat_tuple patl -> List.iter f patl
  | Tpat_construct(_, _, cstr, patl, _) -> List.iter f patl
  | Tpat_variant(_, pat, _) -> may f pat
  | Tpat_record (lbl_pat_list, _) ->
      List.iter (fun (_, _, lbl, pat) -> f pat) lbl_pat_list
  | Tpat_array patl -> List.iter f patl
  | Tpat_or(p1, p2, _) -> f p1; f p2
  | Tpat_lazy p -> f p
  | Tpat_any
  | Tpat_var _
  | Tpat_constant _ -> ()

let map_pattern_desc f d =
  match d with
  | Tpat_alias (p1, id, s) ->
      Tpat_alias (f p1, id, s)
  | Tpat_tuple pats ->
      Tpat_tuple (List.map f pats)
  | Tpat_record (lpats, closed) ->
      Tpat_record (List.map (fun ( lid, lid_loc, l,p) -> lid, lid_loc, l, f p)
                     lpats, closed)
  | Tpat_construct (lid, lid_loc, c,pats, arity) ->
      Tpat_construct (lid, lid_loc, c, List.map f pats, arity)
  | Tpat_array pats ->
      Tpat_array (List.map f pats)
  | Tpat_lazy p1 -> Tpat_lazy (f p1)
  | Tpat_variant (x1, Some p1, x2) ->
      Tpat_variant (x1, Some (f p1), x2)
  | Tpat_or (p1,p2,path) ->
      Tpat_or (f p1, f p2, path)
  | Tpat_var _
  | Tpat_constant _
  | Tpat_any
  | Tpat_variant (_,None,_) -> d

(* List the identifiers bound by a pattern or a let *)

let idents = ref([]: (Ident.t * string loc) list)

let rec bound_idents pat =
  match pat.pat_desc with
  | Tpat_var (id,s) -> idents := (id,s) :: !idents
  | Tpat_alias(p, id, s ) ->
      bound_idents p; idents := (id,s) :: !idents
  | Tpat_or(p1, _, _) ->
      (* Invariant : both arguments binds the same variables *)
      bound_idents p1
  | d -> iter_pattern_desc bound_idents d

let pat_bound_idents pat =
  idents := []; bound_idents pat; let res = !idents in idents := []; res

let rev_let_bound_idents_with_loc pat_expr_list =
  idents := [];
  List.iter (fun (pat, expr) -> bound_idents pat) pat_expr_list;
  let res = !idents in idents := []; res

let let_bound_idents_with_loc pat_expr_list =
  List.rev(rev_let_bound_idents_with_loc pat_expr_list)

let rev_let_bound_idents pat = List.map fst (rev_let_bound_idents_with_loc pat)
let let_bound_idents pat = List.map  fst (let_bound_idents_with_loc pat)

let alpha_var env id = List.assoc id env

let rec alpha_pat env p = match p.pat_desc with
| Tpat_var (id, s) -> (* note the ``Not_found'' case *)
    {p with pat_desc =
     try Tpat_var (alpha_var env id, s) with
     | Not_found -> Tpat_any}
| Tpat_alias (p1, id, s) ->
    let new_p =  alpha_pat env p1 in
    begin try
      {p with pat_desc = Tpat_alias (new_p, alpha_var env id, s)}
    with
    | Not_found -> new_p
    end
| d ->
    {p with pat_desc = map_pattern_desc (alpha_pat env) d}

let mkloc = Location.mkloc
let mknoloc = Location.mknoloc
Tip: Filter by directory path e.g. /media app.js to search for public/media/app.js.
Tip: Use camelCasing e.g. ProjME to search for ProjectModifiedEvent.java.
Tip: Filter by extension type e.g. /repo .js to search for all .js files in the /repo directory.
Tip: Separate your search with spaces e.g. /ssh pom.xml to search for src/ssh/pom.xml.
Tip: Use ↑ and ↓ arrow keys to navigate and return to view the file.
Tip: You can also navigate files with Ctrl+j (next) and Ctrl+k (previous) and view the file with Ctrl+o.
Tip: You can also navigate files with Alt+j (next) and Alt+k (previous) and view the file with Alt+o.