blob: 2a8e0b8748231dd6be813b81b81be31582a151e8 (
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
|
(************************************************************************)
(* * The Coq Proof Assistant / The Coq Development Team *)
(* v * INRIA, CNRS and contributors - Copyright 1999-2018 *)
(* <O___,, * (see CREDITS file for the list of authors) *)
(* \VV/ **************************************************************)
(* // * This file is distributed under the terms of the *)
(* * GNU Lesser General Public License Version 2.1 *)
(* * (see LICENSE file for the text of the license) *)
(************************************************************************)
open Names
open Globnames
open Constr
open Evd
open Environ
type direction = Forward | Backward
(* Core typeclasses hints *)
type 'a hint_info_gen =
{ hint_priority : int option;
hint_pattern : 'a option }
type hint_info_expr = Constrexpr.constr_pattern_expr hint_info_gen
(** This module defines type-classes *)
type typeclass = {
(** The toplevel universe quantification in which the typeclass lives. In
particular, [cl_props] and [cl_context] are quantified over it. *)
cl_univs : Univ.AUContext.t;
(** The class implementation: a record parameterized by the context with defs in it or a definition if
the class is a singleton. This acts as the class' global identifier. *)
cl_impl : GlobRef.t;
(** Context in which the definitions are typed. Includes both typeclass parameters and superclasses.
The global reference gives a direct link to the class itself. *)
cl_context : GlobRef.t option list * Context.Rel.t;
(** Context of definitions and properties on defs, will not be shared *)
cl_props : Context.Rel.t;
(** The methods implementations of the typeclass as projections.
Some may be undefinable due to sorting restrictions or simply undefined if
no name is provided. The [int option option] indicates subclasses whose hint has
the given priority. *)
cl_projs : (Name.t * (direction * hint_info_expr) option * Constant.t option) list;
(** Whether we use matching or full unification during resolution *)
cl_strict : bool;
(** Whether we can assume that instances are unique, which allows
no backtracking and sharing of resolution. *)
cl_unique : bool;
}
type instance
val instances : GlobRef.t -> instance list
val typeclasses : unit -> typeclass list
val all_instances : unit -> instance list
val add_class : typeclass -> unit
val new_instance : typeclass -> hint_info_expr -> bool -> GlobRef.t -> instance
val add_instance : instance -> unit
val remove_instance : instance -> unit
val class_info : GlobRef.t -> typeclass (** raises a UserError if not a class *)
(** These raise a UserError if not a class.
Caution: the typeclass structures is not instantiated w.r.t. the universe instance.
This is done separately by typeclass_univ_instance. *)
val dest_class_app : env -> evar_map -> EConstr.constr -> (typeclass * EConstr.EInstance.t) * constr list
(** Get the instantiated typeclass structure for a given universe instance. *)
val typeclass_univ_instance : typeclass Univ.puniverses -> typeclass
(** Just return None if not a class *)
val class_of_constr : evar_map -> EConstr.constr -> (EConstr.rel_context * ((typeclass * EConstr.EInstance.t) * constr list)) option
val instance_impl : instance -> GlobRef.t
val hint_priority : instance -> int option
val is_class : GlobRef.t -> bool
val is_instance : GlobRef.t -> bool
(** Returns the term and type for the given instance of the parameters and fields
of the type class. *)
val instance_constructor : typeclass EConstr.puniverses -> EConstr.t list ->
EConstr.t option * EConstr.t
(** Filter which evars to consider for resolution. *)
type evar_filter = Evar.t -> Evar_kinds.t -> bool
val all_evars : evar_filter
val all_goals : evar_filter
val no_goals : evar_filter
val no_goals_or_obligations : evar_filter
(** Resolvability.
Only undefined evars can be marked or checked for resolvability.
They represent type-class search roots.
A resolvable evar is an evar the type-class engine may try to solve
An unresolvable evar is an evar the type-class engine will NOT try to solve
*)
val set_resolvable : Evd.Store.t -> bool -> Evd.Store.t
val is_resolvable : evar_info -> bool
val mark_unresolvable : evar_info -> evar_info
val mark_unresolvables : ?filter:evar_filter -> evar_map -> evar_map
val mark_resolvables : ?filter:evar_filter -> evar_map -> evar_map
val mark_resolvable : evar_info -> evar_info
val is_class_evar : evar_map -> evar_info -> bool
val is_class_type : evar_map -> EConstr.types -> bool
val resolve_typeclasses : ?fast_path:bool -> ?filter:evar_filter -> ?unique:bool ->
?split:bool -> ?fail:bool -> env -> evar_map -> evar_map
val resolve_one_typeclass : ?unique:bool -> env -> evar_map -> EConstr.types -> evar_map * EConstr.constr
val set_typeclass_transparency_hook : (evaluable_global_reference -> bool (*local?*) -> bool -> unit) Hook.t
val set_typeclass_transparency : evaluable_global_reference -> bool -> bool -> unit
val classes_transparent_state_hook : (unit -> transparent_state) Hook.t
val classes_transparent_state : unit -> transparent_state
val add_instance_hint_hook :
(global_reference_or_constr -> GlobRef.t list ->
bool (* local? *) -> hint_info_expr -> Decl_kinds.polymorphic -> unit) Hook.t
val remove_instance_hint_hook : (GlobRef.t -> unit) Hook.t
val add_instance_hint : global_reference_or_constr -> GlobRef.t list ->
bool -> hint_info_expr -> Decl_kinds.polymorphic -> unit
val remove_instance_hint : GlobRef.t -> unit
val solve_all_instances_hook : (env -> evar_map -> evar_filter -> bool -> bool -> bool -> evar_map) Hook.t
val solve_one_instance_hook : (env -> evar_map -> EConstr.types -> bool -> evar_map * EConstr.constr) Hook.t
val declare_instance : hint_info_expr option -> bool -> GlobRef.t -> unit
(** Build the subinstances hints for a given typeclass object.
check tells if we should check for existence of the
subinstances and add only the missing ones. *)
val build_subclasses : check:bool -> env -> evar_map -> GlobRef.t ->
hint_info_expr ->
(GlobRef.t list * hint_info_expr * constr) list
|
