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|
(************************************************************************)
(* v * The Coq Proof Assistant / The Coq Development Team *)
(* <O___,, * INRIA - CNRS - LIX - LRI - PPS - Copyright 1999-2012 *)
(* \VV/ **************************************************************)
(* // * This file is distributed under the terms of the *)
(* * GNU Lesser General Public License Version 2.1 *)
(************************************************************************)
open Vernacexpr
open Errors
open Pp
let string_of_in_script b = if b then " (inside script)" else ""
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 false -> "ProofStep"
| VtProofStep true -> "ProofStep (parallel)"
| VtProofMode s -> "ProofMode " ^ s
| VtQuery (b,(id,route)) ->
"Query " ^ string_of_in_script b ^ " report " ^ Stateid.to_string id ^
" route " ^ string_of_int route
| VtStm ((VtFinish|VtJoinDocument|VtObserve _|VtPrintDag|VtWait), b) ->
"Stm " ^ string_of_in_script b
| VtStm (VtPG, b) -> "Stm PG " ^ string_of_in_script b
| VtStm (VtBack _, b) -> "Stm Back " ^ string_of_in_script b
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 classifiers = ref []
let declare_vernac_classifier
(s : Vernacexpr.extend_name)
(f : Genarg.raw_generic_argument list -> unit -> vernac_classification)
=
classifiers := !classifiers @ [s,f]
let elide_part_of_script_and_now (a, _) =
match a with
| VtQuery (_,id) -> VtQuery (false,id), VtNow
| VtStm (x, _) -> VtStm (x, false), VtNow
| x -> x, VtNow
let make_polymorphic (a, b as x) =
match a with
| VtStartProof (x, _, ids) ->
VtStartProof (x, Doesn'tGuaranteeOpacity, ids), b
| _ -> x
let undo_classifier = ref (fun _ -> assert false)
let set_undo_classifier f = undo_classifier := f
let rec classify_vernac e =
let rec static_classifier e = match e with
(* PG compatibility *)
| VernacUnsetOption (["Silent"]|["Undo"]|["Printing";"Depth"])
| VernacSetOption ((["Silent"]|["Undo"]|["Printing";"Depth"]),_)
when !Flags.print_emacs -> VtStm(VtPG,false), VtNow
(* Stm *)
| VernacStm Finish -> VtStm (VtFinish, true), VtNow
| VernacStm Wait -> VtStm (VtWait, true), VtNow
| VernacStm JoinDocument -> VtStm (VtJoinDocument, true), VtNow
| VernacStm PrintDag -> VtStm (VtPrintDag, true), VtNow
| VernacStm (Observe id) -> VtStm (VtObserve id, true), VtNow
| VernacStm (Command x) -> elide_part_of_script_and_now (classify_vernac x)
| VernacStm (PGLast x) -> fst (classify_vernac x), VtNow
(* Nested vernac exprs *)
| VernacProgram e -> classify_vernac e
| VernacLocal (_,e) -> classify_vernac e
| VernacPolymorphic (b, e) ->
if b || Flags.is_universe_polymorphism () (* Ok or not? *) then
make_polymorphic (classify_vernac e)
else classify_vernac e
| VernacTimeout (_,e) -> classify_vernac e
| VernacTime e -> classify_vernac_list e
| VernacFail e -> (* Fail Qed or Fail Lemma must not join/fork the DAG *)
(match classify_vernac e with
| ( VtQuery _ | VtProofStep _ | VtSideff _
| VtStm _ | VtProofMode _ ), _ as x -> x
| VtQed _, _ -> VtProofStep false, VtNow
| (VtStartProof _ | VtUnknown), _ -> VtUnknown, VtNow)
(* Qed *)
| VernacAbort _ -> VtQed VtDrop, VtLater
| VernacEndProof Admitted -> VtQed VtKeepAsAxiom, VtLater
| VernacEndProof _ | VernacExactProof _ -> VtQed VtKeep, VtLater
(* Query *)
| VernacShow _ | VernacPrint _ | VernacSearch _ | VernacLocate _
| VernacCheckMayEval _ ->
VtQuery (true,(Stateid.dummy,Feedback.default_route)), VtLater
(* ProofStep *)
| VernacSolve (SelectAllParallel,_,_,_) -> VtProofStep true, VtLater
| VernacProof _
| VernacBullet _
| VernacFocus _ | VernacUnfocus
| VernacSubproof _ | VernacEndSubproof
| VernacSolve _
| VernacCheckGuard
| VernacUnfocused
| VernacSolveExistential _ -> VtProofStep false, VtLater
(* Options changing parser *)
| VernacUnsetOption (["Default";"Proof";"Using"])
| VernacSetOption (["Default";"Proof";"Using"],_) -> VtSideff [], VtNow
(* StartProof *)
| VernacDefinition (
(Some Decl_kinds.Discharge,Decl_kinds.Definition),(_,i),ProveBody _) ->
VtStartProof("Classic",Doesn'tGuaranteeOpacity,[i]), VtLater
| VernacDefinition (_,(_,i),ProveBody _) ->
VtStartProof("Classic",GuaranteesOpacity,[i]), VtLater
| VernacStartTheoremProof (_,l,_) ->
let ids =
CList.map_filter (function (Some(_,i), _) -> Some i | _ -> None) l in
VtStartProof ("Classic",GuaranteesOpacity,ids), VtLater
| VernacGoal _ -> VtStartProof ("Classic",GuaranteesOpacity,[]), VtLater
| VernacFixpoint (_,l) ->
let ids, open_proof =
List.fold_left (fun (l,b) (((_,id),_,_,_,p),_) ->
id::l, b || p = None) ([],false) l in
if open_proof
then VtStartProof ("Classic",GuaranteesOpacity,ids), VtLater
else VtSideff ids, VtLater
| VernacCoFixpoint (_,l) ->
let ids, open_proof =
List.fold_left (fun (l,b) (((_,id),_,_,p),_) ->
id::l, b || p = None) ([],false) l in
if open_proof
then VtStartProof ("Classic",GuaranteesOpacity,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 snd l) l) in
VtSideff ids, VtLater
| VernacDefinition (_,(_,id),DefineBody _) -> VtSideff [id], VtLater
| VernacInductive (_,_,l) ->
let ids = List.map (fun (((_,(_,id)),_,_,_,cl),_) -> id :: match cl with
| Constructors l -> List.map (fun (_,((_,id),_)) -> id) l
| RecordDecl (oid,l) -> (match oid with Some (_,x) -> [x] | _ -> []) @
CList.map_filter (function
| ((_,AssumExpr((_,Names.Name n),_)),_),_ -> Some n
| _ -> None) l) l in
VtSideff (List.flatten ids), VtLater
| VernacScheme l ->
let ids = List.map snd (CList.map_filter (fun (x,_) -> x) l) in
VtSideff ids, VtLater
| VernacCombinedScheme ((_,id),_) -> VtSideff [id], VtLater
| VernacUniverse _ | VernacConstraint _
| VernacBeginSection _
| VernacCanonical _ | VernacCoercion _ | VernacIdentityCoercion _
| VernacAddLoadPath _ | VernacRemoveLoadPath _ | VernacAddMLPath _
| VernacChdir _
| VernacCreateHintDb _ | VernacRemoveHints _ | VernacHints _
| VernacDeclareImplicits _ | VernacArguments _ | VernacArgumentsScope _
| VernacReserve _
| VernacGeneralizable _
| VernacSetOpacity _ | VernacSetStrategy _
| VernacUnsetOption _ | VernacSetOption _
| VernacAddOption _ | VernacRemoveOption _
| VernacMemOption _ | VernacPrintOption _
| VernacGlobalCheck _
| VernacDeclareReduction _
| VernacDeclareClass _ | VernacDeclareInstances _
| VernacRegister _
| VernacDeclareTacticDefinition _
| 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,(_,id),bl,_)
| VernacDefineModule (exp,(_,id),bl,_,_) ->
VtSideff [id], if bl = [] && exp = None then VtLater else VtNow
| VernacDeclareModuleType ((_,id),bl,_,_) ->
VtSideff [id], if bl = [] then VtLater else VtNow
(* These commands alter the parser *)
| VernacOpenCloseScope _ | VernacDelimiters _ | VernacBindScope _
| VernacInfix _ | VernacNotation _ | VernacNotationAddFormat _
| VernacSyntaxExtension _
| VernacSyntacticDefinition _
| VernacTacticNotation _
| VernacRequire _ | VernacImport _ | VernacInclude _
| VernacDeclareMLModule _
| VernacContext _ (* TASSI: unsure *)
| VernacProofMode _
(* These are ambiguous *)
| VernacInstance _ -> VtUnknown, VtNow
(* Stm will install a new classifier to handle these *)
| VernacBack _ | VernacAbortAll
| VernacUndoTo _ | VernacUndo _
| VernacResetName _ | VernacResetInitial
| VernacBacktrack _ | VernacBackTo _ | VernacRestart -> !undo_classifier e
(* What are these? *)
| VernacNop
| VernacToplevelControl _
| VernacRestoreState _
| VernacWriteState _ -> VtUnknown, VtNow
| VernacError _ -> assert false
(* Plugins should classify their commands *)
| VernacExtend (s,l) ->
try List.assoc s !classifiers l ()
with Not_found -> anomaly(str"No classifier for"++spc()++str (fst s))
and classify_vernac_list = function
(* spiwack: It would be better to define a monoid on classifiers.
So that the classifier of the list would be the composition of
the classifier of the individual commands. Currently: special
case for singleton lists.*)
| [_,c] -> static_classifier c
| l -> VtUnknown,VtNow
in
let res = static_classifier e in
if Flags.is_universe_polymorphism () then
make_polymorphic res
else res
let classify_as_query =
VtQuery (true,(Stateid.dummy,Feedback.default_route)), VtLater
let classify_as_sideeff = VtSideff [], VtLater
let classify_as_proofstep = VtProofStep false, VtLater
|
