aboutsummaryrefslogtreecommitdiffhomepage
path: root/kernel/retroknowledge.ml
blob: 44f5dcb32d74419681661297b7ffba4d45d53841 (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
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
(************************************************************************)
(*  v      *   The Coq Proof Assistant  /  The Coq Development Team     *)
(* <O___,, * CNRS-Ecole Polytechnique-INRIA Futurs-Universite Paris Sud *)
(*   \V/  **************************************************************)
(*    //   *      This file is distributed under the terms of the       *)
(*         *       GNU Lesser General Public License Version 2.1        *)
(************************************************************************)

(* $Id$ *)

open Term
open Names

(* Type declarations, these types shouldn't be exported they are accessed
   through specific functions. As being mutable and all it is wiser *)
(* These types are put into two distinct categories: proactive and reactive.
   Proactive information allows to find the name of a combinator, constructor
   or inductive type handling a specific function.
   Reactive information is, on the other hand, everything you need to know
   about a specific name.*)

(* aliased type for clarity purpose*)
type entry =  (constr, types) kind_of_term

(* the following types correspond to the different "things"
   the kernel can learn about. These are the fields of the proactive knowledge*)
type nat_field =
  | NatType
  | NatPlus
  | NatTimes
  
type n_field = 
  | NPositive
  | NType
  | NTwice
  | NTwicePlusOne
  | NPhi
  | NPhiInv
  | NPlus
  | NTimes

type int31_field = 
  | Int31Bits
  | Int31Type
  | Int31Twice
  | Int31TwicePlusOne
  | Int31Phi
  | Int31PhiInv
  | Int31Plus
  | Int31PlusC
  | Int31PlusCarryC
  | Int31Minus
  | Int31MinusC
  | Int31MinusCarryC
  | Int31Times
  | Int31TimesC
  | Int31Div21
  | Int31Div
  | Int31AddMulDiv
  | Int31Compare
  | Int31Head0
  | Int31Tail0

type field =
 (* | KEq
  | KNat of nat_field
  | KN of n_field *)
  | KInt31 of string*int31_field


(* record representing all the flags of the internal state of the kernel *)
type flags = {fastcomputation : bool}





(*A definition of maps from strings to pro_int31, to be able
  to have any amount of coq representation for the 31bits integers *)
module OrderedField =
struct
  type t = field
  let compare = compare
end

module Proactive = Map.Make (OrderedField)


type proactive = entry Proactive.t

(* the reactive knowledge is represented as a functionaly map 
   from the type of terms (actually it is the terms whose outermost
   layer is unfolded (typically by Term.kind_of_term)) to the 
   type reactive_end which is a record containing all the kind of reactive
   information needed *)
(* todo: because of the bug with output state, reactive_end should eventually
   contain no function. A forseen possibility is to make it a map from
   a finite type describing the fields to the field of proactive retroknowledge
   (and then to make as many functions as needed in environ.ml) *)

module OrderedEntry =
struct
  type t = entry
  let compare = compare
end

module Reactive = Map.Make (OrderedEntry)

type reactive_end = {(*information required by the compiler of the VM *)
  vm_compiling :
      (*fastcomputation flag -> continuation -> result *)
      (bool->Cbytecodes.comp_env->constr array ->
       int->Cbytecodes.bytecodes->Cbytecodes.bytecodes)
      option;
  vm_constant_static :
      (*fastcomputation flag -> constructor -> args -> result*)
      (bool->constr array->Cbytecodes.structured_constant)
      option;
  vm_constant_dynamic :
      (*fastcomputation flag -> constructor -> reloc -> args -> sz -> cont -> result *)
      (bool->Cbytecodes.comp_env->Cbytecodes.block array->int->
         Cbytecodes.bytecodes->Cbytecodes.bytecodes)
      option;
  (* fastcomputation flag -> cont -> result *)
  vm_before_match : (bool -> Cbytecodes.bytecodes -> Cbytecodes.bytecodes) option;
  (* tag (= compiled int for instance) -> result *)
  vm_decompile_const : (int -> Term.constr) option}



and reactive = reactive_end Reactive.t

and retroknowledge = {flags : flags; proactive : proactive; reactive : reactive}

(* This type represent an atomic action of the retroknowledge. It
   is stored in the compiled libraries *)
(* As per now, there is only the possibility of registering things
   the possibility of unregistering or changing the flag is under study *)
type action =
    | RKRegister of field*entry


(*initialisation*)
let initial_flags = 
      {fastcomputation = true;}

let initial_proactive = 
  (Proactive.empty:proactive)

let initial_reactive = 
  (Reactive.empty:reactive)

let initial_retroknowledge =
  {flags = initial_flags; 
   proactive = initial_proactive; 
   reactive = initial_reactive }

let empty_reactive_end =
  { vm_compiling = None ;
    vm_constant_static = None;
    vm_constant_dynamic = None;
    vm_before_match = None;
    vm_decompile_const = None }




(* acces functions for proactive retroknowledge *)
let add_field knowledge field value =
  {knowledge with proactive = Proactive.add field value knowledge.proactive}

let mem knowledge field =
  Proactive.mem field knowledge.proactive

let remove knowledge field =
  {knowledge with proactive = Proactive.remove field knowledge.proactive}

let find knowledge field =
  Proactive.find field knowledge.proactive





(*access functions for reactive retroknowledge*)

(* used for compiling of functions (add, mult, etc..) *)
let get_vm_compiling_info knowledge key = 
  match (Reactive.find key knowledge.reactive).vm_compiling
  with
    | None -> raise Not_found
    | Some f -> f knowledge.flags.fastcomputation

(* used for compilation of fully applied constructors *)
let get_vm_constant_static_info knowledge key =
  match (Reactive.find key knowledge.reactive).vm_constant_static
  with
    | None -> raise Not_found
    | Some f -> f knowledge.flags.fastcomputation

(* used for compilation of partially applied constructors *)
let get_vm_constant_dynamic_info knowledge key =
  match (Reactive.find key knowledge.reactive).vm_constant_dynamic
  with
    | None -> raise Not_found
    | Some f -> f knowledge.flags.fastcomputation

let get_vm_before_match_info knowledge key = 
  match (Reactive.find key knowledge.reactive).vm_before_match
  with
    | None -> raise Not_found
    | Some f -> f knowledge.flags.fastcomputation

let get_vm_decompile_constant_info knowledge key = 
  match (Reactive.find key knowledge.reactive).vm_decompile_const
  with
    | None -> raise Not_found
    | Some f -> f
  


(* functions manipulating reactive knowledge *)
let add_vm_compiling_info knowledge value nfo =
  {knowledge with reactive =
   try
     Reactive.add value
       {(Reactive.find value (knowledge.reactive)) with vm_compiling = Some nfo}
       knowledge.reactive
   with Not_found ->
     Reactive.add value {empty_reactive_end with vm_compiling = Some nfo}
       knowledge.reactive
  }

let add_vm_constant_static_info knowledge value nfo =
  {knowledge with reactive =
   try
     Reactive.add value
       {(Reactive.find value (knowledge.reactive)) with vm_constant_static = Some nfo}
       knowledge.reactive
   with Not_found ->
     Reactive.add value {empty_reactive_end with vm_constant_static = Some nfo}
       knowledge.reactive
  }

let add_vm_constant_dynamic_info knowledge value nfo =
  {knowledge with reactive =
   try
     Reactive.add value
       {(Reactive.find value (knowledge.reactive)) with vm_constant_dynamic = Some nfo}
       knowledge.reactive
   with Not_found ->
     Reactive.add value {empty_reactive_end with vm_constant_dynamic = Some nfo}
       knowledge.reactive
  }

let add_vm_before_match_info knowledge value nfo =
  {knowledge with reactive =
   try
     Reactive.add value
       {(Reactive.find value (knowledge.reactive)) with vm_before_match = Some nfo}
       knowledge.reactive
   with Not_found ->
     Reactive.add value {empty_reactive_end with vm_before_match = Some nfo}
       knowledge.reactive
  }

let add_vm_decompile_constant_info knowledge value nfo =
  {knowledge with reactive =
   try
     Reactive.add value
       {(Reactive.find value (knowledge.reactive)) with vm_decompile_const = Some nfo}
       knowledge.reactive
   with Not_found ->
     Reactive.add value {empty_reactive_end with vm_decompile_const = Some nfo}
       knowledge.reactive
  }

let clear_info knowledge value =
  {knowledge with reactive = Reactive.remove value knowledge.reactive}