blob: 5a19cc3f59828b8ad22ee9372f3ccc48913c9a3c (
plain)
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
|
(************************************************************************)
(* v * The Coq Proof Assistant / The Coq Development Team *)
(* <O___,, * INRIA - CNRS - LIX - LRI - PPS - Copyright 1999-2010 *)
(* \VV/ **************************************************************)
(* // * This file is distributed under the terms of the *)
(* * GNU Lesser General Public License Version 2.1 *)
(************************************************************************)
(*s Target language for extraction: a core ML called MiniML. *)
open Pp
open Util
open Names
open Libnames
(* The [signature] type is used to know how many arguments a CIC
object expects, and what these arguments will become in the ML
object. *)
(* We eliminate from terms: 1) types 2) logical parts.
[Kother] stands both for logical or other reasons
(for instance user-declared implicit arguments w.r.t. extraction). *)
type kill_reason = Ktype | Kother
type sign = Keep | Kill of kill_reason
(* Convention: outmost lambda/product gives the head of the list. *)
type signature = sign list
(*s ML type expressions. *)
type ml_type =
| Tarr of ml_type * ml_type
| Tglob of global_reference * ml_type list
| Tvar of int
| Tvar' of int (* same as Tvar, used to avoid clash *)
| Tmeta of ml_meta (* used during ML type reconstruction *)
| Tdummy of kill_reason
| Tunknown
| Taxiom
and ml_meta = { id : int; mutable contents : ml_type option }
(* ML type schema.
The integer is the number of variable in the schema. *)
type ml_schema = int * ml_type
(*s ML inductive types. *)
type inductive_kind =
| Singleton
| Coinductive
| Standard
| Record of global_reference option list (* None for anonymous field *)
(* A [ml_ind_packet] is the miniml counterpart of a [one_inductive_body].
If the inductive is logical ([ip_logical = false]), then all other fields
are unused. Otherwise,
[ip_sign] is a signature concerning the arguments of the inductive,
[ip_vars] contains the names of the type variables surviving in ML,
[ip_types] contains the ML types of all constructors.
*)
type ml_ind_packet = {
ip_typename : identifier;
ip_consnames : identifier array;
ip_logical : bool;
ip_sign : signature;
ip_vars : identifier list;
ip_types : (ml_type list) array
}
(* [ip_nparams] contains the number of parameters. *)
type equiv =
| NoEquiv
| Equiv of kernel_name
| RenEquiv of string
type ml_ind = {
ind_kind : inductive_kind;
ind_nparams : int;
ind_packets : ml_ind_packet array;
ind_equiv : equiv
}
(*s ML terms. *)
type ml_ident =
| Dummy
| Id of identifier
| Tmp of identifier
(** We now store some typing information on constructors
and cases to avoid type-unsafe optimisations. This will be
either the type of the applied constructor or the type
of the head of the match.
*)
(** Nota : the constructor [MLtuple] and the extension of [MLcase]
to general patterns have been proposed by P.N. Tollitte for
his Relation Extraction plugin. [MLtuple] is currently not
used by the main extraction, as well as deep patterns. *)
type ml_branch = ml_ident list * ml_pattern * ml_ast
and ml_ast =
| MLrel of int
| MLapp of ml_ast * ml_ast list
| MLlam of ml_ident * ml_ast
| MLletin of ml_ident * ml_ast * ml_ast
| MLglob of global_reference
| MLcons of ml_type * global_reference * ml_ast list
| MLtuple of ml_ast list
| MLcase of ml_type * ml_ast * ml_branch array
| MLfix of int * identifier array * ml_ast array
| MLexn of string
| MLdummy
| MLaxiom
| MLmagic of ml_ast
and ml_pattern =
| Pcons of global_reference * ml_pattern list
| Ptuple of ml_pattern list
| Prel of int (** Cf. the idents in the branch. [Prel 1] is the last one. *)
| Pwild
| Pusual of global_reference (** Shortcut for Pcons (r,[Prel n;...;Prel 1]) **)
(*s ML declarations. *)
type ml_decl =
| Dind of mutual_inductive * ml_ind
| Dtype of global_reference * identifier list * ml_type
| Dterm of global_reference * ml_ast * ml_type
| Dfix of global_reference array * ml_ast array * ml_type array
type ml_spec =
| Sind of mutual_inductive * ml_ind
| Stype of global_reference * identifier list * ml_type option
| Sval of global_reference * ml_type
type ml_specif =
| Spec of ml_spec
| Smodule of ml_module_type
| Smodtype of ml_module_type
and ml_module_type =
| MTident of module_path
| MTfunsig of mod_bound_id * ml_module_type * ml_module_type
| MTsig of module_path * ml_module_sig
| MTwith of ml_module_type * ml_with_declaration
and ml_with_declaration =
| ML_With_type of identifier list * identifier list * ml_type
| ML_With_module of identifier list * module_path
and ml_module_sig = (label * ml_specif) list
type ml_structure_elem =
| SEdecl of ml_decl
| SEmodule of ml_module
| SEmodtype of ml_module_type
and ml_module_expr =
| MEident of module_path
| MEfunctor of mod_bound_id * ml_module_type * ml_module_expr
| MEstruct of module_path * ml_module_structure
| MEapply of ml_module_expr * ml_module_expr
and ml_module_structure = (label * ml_structure_elem) list
and ml_module =
{ ml_mod_expr : ml_module_expr;
ml_mod_type : ml_module_type }
(* NB: we do not translate the [mod_equiv] field, since [mod_equiv = mp]
implies that [mod_expr = MEBident mp]. Same with [msb_equiv]. *)
type ml_structure = (module_path * ml_module_structure) list
type ml_signature = (module_path * ml_module_sig) list
type unsafe_needs = {
mldummy : bool;
tdummy : bool;
tunknown : bool;
magic : bool
}
type language_descr = {
keywords : Idset.t;
(* Concerning the source file *)
file_suffix : string;
preamble : identifier -> module_path list -> unsafe_needs -> std_ppcmds;
pp_struct : ml_structure -> std_ppcmds;
(* Concerning a possible interface file *)
sig_suffix : string option;
sig_preamble : identifier -> module_path list -> unsafe_needs -> std_ppcmds;
pp_sig : ml_signature -> std_ppcmds;
(* for an isolated declaration print *)
pp_decl : ml_decl -> std_ppcmds;
}
|
