File: vernac_classifier.ml

package info (click to toggle)
coq 8.9.0-1
  • links: PTS, VCS
  • area: main
  • in suites: bullseye, buster, sid
  • size: 30,604 kB
  • sloc: ml: 192,230; sh: 2,585; python: 2,206; ansic: 1,878; makefile: 818; lisp: 202; xml: 24; sed: 2
file content (215 lines) | stat: -rw-r--r-- 9,443 bytes parent folder | download
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
(************************************************************************)
(*         *   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 CErrors
open Util
open Pp
open CAst
open Vernacexpr

let default_proof_mode () = Proof_global.get_default_proof_mode_name () [@ocaml.warning "-3"]

let string_of_parallel = function
  | `Yes (solve,abs) ->
       "par" ^ if solve then "solve" else "" ^ if abs then "abs" else ""
  | `No -> ""

let string_of_vernac_type = function
  | VtUnknown -> "Unknown"
  | VtStartProof _ -> "StartProof"
  | VtSideff _ -> "Sideff"
  | VtQed VtKeep -> "Qed(keep)"
  | VtQed VtKeepAsAxiom -> "Qed(admitted)"
  | VtQed VtDrop -> "Qed(drop)"
  | VtProofStep { parallel; proof_block_detection } ->
      "ProofStep " ^ string_of_parallel parallel ^
        Option.default "" proof_block_detection
  | VtProofMode s -> "ProofMode " ^ s
  | VtQuery -> "Query"
  | VtMeta -> "Meta "

let string_of_vernac_when = function
  | VtLater -> "Later"
  | VtNow -> "Now"

let string_of_vernac_classification (t,w) =
  string_of_vernac_type t ^ " " ^ string_of_vernac_when w

let idents_of_name : Names.Name.t -> Names.Id.t list =
  function
  | Names.Anonymous -> []
  | Names.Name n -> [n]

let stm_allow_nested_proofs_option_name = ["Nested";"Proofs";"Allowed"]

let options_affecting_stm_scheduling =
  [ Vernacentries.universe_polymorphism_option_name;
    stm_allow_nested_proofs_option_name ]

let classify_vernac e =
  let static_classifier ~poly e = match e with
    (* Univ poly compatibility: we run it now, so that we can just
     * look at Flags in stm.ml.  Would be nicer to have the stm
     * look at the entire dag to detect this option. *)
    | ( VernacSetOption (_, l,_) | VernacUnsetOption (_, l))
      when CList.exists (CList.equal String.equal l)
        options_affecting_stm_scheduling ->
       VtSideff [], VtNow
    (* Qed *)
    | VernacAbort _ -> VtQed VtDrop, VtLater
    | VernacEndProof Admitted -> VtQed VtKeepAsAxiom, VtLater
    | VernacEndProof _ | VernacExactProof _ -> VtQed VtKeep, VtLater
    (* Query *)
    | VernacShow _ | VernacPrint _ | VernacSearch _ | VernacLocate _
    | VernacCheckMayEval _ -> VtQuery, VtLater
    (* ProofStep *)
    | VernacProof _ 
    | VernacFocus _ | VernacUnfocus
    | VernacSubproof _
    | VernacCheckGuard
    | VernacUnfocused
    | VernacSolveExistential _ ->
        VtProofStep { parallel = `No; proof_block_detection = None }, VtLater
    | VernacBullet _ ->
        VtProofStep { parallel = `No; proof_block_detection = Some "bullet" },
        VtLater
    | VernacEndSubproof -> 
        VtProofStep { parallel = `No;
                      proof_block_detection = Some "curly" },
        VtLater
    (* Options changing parser *)
    | VernacUnsetOption (_, ["Default";"Proof";"Using"])
    | VernacSetOption (_, ["Default";"Proof";"Using"],_) -> VtSideff [], VtNow
    (* StartProof *)
    | VernacDefinition ((Decl_kinds.DoDischarge,_),({v=i},_),ProveBody _) ->
      VtStartProof(default_proof_mode (),Doesn'tGuaranteeOpacity, idents_of_name i), VtLater

    | VernacDefinition (_,({v=i},_),ProveBody _) ->
       let guarantee = if poly then Doesn'tGuaranteeOpacity else GuaranteesOpacity in
        VtStartProof(default_proof_mode (),guarantee, idents_of_name i), VtLater
    | VernacStartTheoremProof (_,l) ->
        let ids = List.map (fun (({v=i}, _), _) -> i) l in
       let guarantee = if poly then Doesn'tGuaranteeOpacity else GuaranteesOpacity in
        VtStartProof (default_proof_mode (),guarantee,ids), VtLater
    | VernacFixpoint (discharge,l) ->
       let guarantee =
         if discharge = Decl_kinds.DoDischarge || poly then Doesn'tGuaranteeOpacity
         else GuaranteesOpacity
       in
        let ids, open_proof =
          List.fold_left (fun (l,b) ((({v=id},_),_,_,_,p),_) ->
            id::l, b || p = None) ([],false) l in
        if open_proof
        then VtStartProof (default_proof_mode (),guarantee,ids), VtLater
        else VtSideff ids, VtLater
    | VernacCoFixpoint (discharge,l) ->
       let guarantee =
         if discharge = Decl_kinds.DoDischarge || poly then Doesn'tGuaranteeOpacity
         else GuaranteesOpacity
       in
        let ids, open_proof =
          List.fold_left (fun (l,b) ((({v=id},_),_,_,p),_) ->
            id::l, b || p = None) ([],false) l in
        if open_proof
        then VtStartProof (default_proof_mode (),guarantee,ids), VtLater
        else VtSideff ids, VtLater
    (* Sideff: apply to all open branches. usually run on master only *)
    | VernacAssumption (_,_,l) ->
        let ids = List.flatten (List.map (fun (_,(l,_)) -> List.map (fun (id, _) -> id.v) l) l) in
        VtSideff ids, VtLater
    | VernacDefinition (_,({v=id},_),DefineBody _) -> VtSideff (idents_of_name id), VtLater
    | VernacInductive (_, _,_,l) ->
        let ids = List.map (fun (((_,({v=id},_)),_,_,_,cl),_) -> id :: match cl with
        | Constructors l -> List.map (fun (_,({v=id},_)) -> id) l
        | RecordDecl (oid,l) -> (match oid with Some {v=x} -> [x] | _ -> []) @
           CList.map_filter (function
            | ((_,AssumExpr({v=Names.Name n},_)),_),_ -> Some n
            | _ -> None) l) l in
        VtSideff (List.flatten ids), VtLater
    | VernacScheme l ->
        let ids = List.map (fun {v}->v) (CList.map_filter (fun (x,_) -> x) l) in
        VtSideff ids, VtLater
    | VernacCombinedScheme ({v=id},_) -> VtSideff [id], VtLater
    | VernacBeginSection {v=id} -> VtSideff [id], VtLater
    | VernacUniverse _ | VernacConstraint _
    | VernacCanonical _ | VernacCoercion _ | VernacIdentityCoercion _
    | VernacAddLoadPath _ | VernacRemoveLoadPath _ | VernacAddMLPath _
    | VernacChdir _ 
    | VernacCreateHintDb _ | VernacRemoveHints _ | VernacHints _
    | VernacArguments _
    | VernacReserve _
    | VernacGeneralizable _
    | VernacSetOpacity _ | VernacSetStrategy _
    | VernacUnsetOption _ | VernacSetOption _
    | VernacAddOption _ | VernacRemoveOption _
    | VernacMemOption _ | VernacPrintOption _
    | VernacGlobalCheck _
    | VernacDeclareReduction _
    | VernacDeclareClass _ | VernacDeclareInstances _
    | VernacRegister _
    | VernacNameSectionHypSet _
    | VernacDeclareCustomEntry _
    | VernacComments _ -> VtSideff [], VtLater
    (* Who knows *)
    | VernacLoad _ -> VtSideff [], VtNow
    (* (Local) Notations have to disappear *)
    | VernacEndSegment _ -> VtSideff [], VtNow
    (* Modules with parameters have to be executed: can import notations *)
    | VernacDeclareModule (exp,{v=id},bl,_)
    | VernacDefineModule (exp,{v=id},bl,_,_) ->
        VtSideff [id], if bl = [] && exp = None then VtLater else VtNow
    | VernacDeclareModuleType ({v=id},bl,_,_) ->
        VtSideff [id], if bl = [] then VtLater else VtNow
    (* These commands alter the parser *)
    | VernacOpenCloseScope _ | VernacDelimiters _ | VernacBindScope _
    | VernacInfix _ | VernacNotation _ | VernacNotationAddFormat _
    | VernacSyntaxExtension _
    | VernacSyntacticDefinition _
    | VernacRequire _ | VernacImport _ | VernacInclude _
    | VernacDeclareMLModule _
    | VernacContext _ (* TASSI: unsure *)
    | VernacProofMode _ -> VtSideff [], VtNow
    (* These are ambiguous *)
    | VernacInstance _ -> VtUnknown, VtNow
    (* Stm will install a new classifier to handle these *)
    | VernacBack _ | VernacAbortAll
    | VernacUndoTo _ | VernacUndo _
    | VernacResetName _ | VernacResetInitial
    | VernacBackTo _ | VernacRestart -> VtMeta, VtNow
    (* What are these? *)
    | VernacRestoreState _
    | VernacWriteState _ -> VtSideff [], VtNow
    (* Plugins should classify their commands *)
    | VernacExtend (s,l) ->
        try Vernacentries.get_vernac_classifier s l
        with Not_found -> anomaly(str"No classifier for"++spc()++str (fst s)++str".")
  in
  let rec static_control_classifier ~poly = function
    | VernacExpr (f, e) ->
      let _, atts = Vernacentries.attributes_of_flags f Vernacinterp.(mk_atts ~polymorphic:poly ()) in
      let poly = atts.Vernacinterp.polymorphic in
      static_classifier ~poly e
    | VernacTimeout (_,e) -> static_control_classifier ~poly e
    | VernacTime (_,{v=e}) | VernacRedirect (_, {v=e}) ->
       static_control_classifier ~poly e
    | VernacFail e -> (* Fail Qed or Fail Lemma must not join/fork the DAG *)
        (match static_control_classifier ~poly e with
        | ( VtQuery | VtProofStep _ | VtSideff _
          | VtProofMode _ | VtMeta), _ as x -> x
        | VtQed _, _ ->
            VtProofStep { parallel = `No; proof_block_detection = None },
            VtNow
        | (VtStartProof _ | VtUnknown), _ -> VtUnknown, VtNow)
  in
  static_control_classifier ~poly:(Flags.is_universe_polymorphism ()) e

let classify_as_query = VtQuery, VtLater
let classify_as_sideeff = VtSideff [], VtLater
let classify_as_proofstep = VtProofStep { parallel = `No; proof_block_detection = None}, VtLater