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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 VtDrop -> "Qed(drop)"
| VtProofStep -> "ProofStep"
| VtProofMode s -> "ProofMode " ^ s
| VtQuery b -> "Query" ^ string_of_in_script b
| 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 : string)
(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 _ -> VtQuery false, VtNow
| VtStm (x, _) -> VtStm (x, false), VtNow
| x -> x, VtNow
let undo_classifier = ref (fun _ -> assert false)
let set_undo_classifier f = undo_classifier := f
let rec classify_vernac e =
let 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
(* Impossible, Vernac handles these *)
| VernacList _ -> anomaly (str "VernacList not handled by Vernac")
| VernacLoad _ -> anomaly (str "VernacLoad not handled by Vernac")
(* Nested vernac exprs *)
| VernacProgram e -> classify_vernac e
| VernacLocal (_,e) -> classify_vernac e
| VernacTimeout (_,e) -> classify_vernac e
| VernacTime e -> classify_vernac 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, VtNow
| (VtStartProof _ | VtUnknown), _ -> VtUnknown, VtNow)
(* Qed *)
| VernacEndProof Admitted | VernacAbort _ -> VtQed VtDrop, VtLater
| VernacEndProof _ | VernacExactProof _ -> VtQed VtKeep, VtLater
(* Query *)
| VernacShow _ | VernacPrint _ | VernacSearch _ | VernacLocate _
| VernacCheckMayEval _ -> VtQuery true, VtLater
(* ProofStep *)
| VernacProof _
| VernacBullet _
| VernacFocus _ | VernacUnfocus _
| VernacSubproof _ | VernacEndSubproof _
| VernacSolve _ | VernacError _
| VernacCheckGuard _
| VernacUnfocused _
| VernacSolveExistential _ -> VtProofStep, VtLater
(* StartProof *)
| 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
| 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 _
| VernacComments _ -> VtSideff [], VtLater
(* (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 _ | VernacSyntaxExtension _
| VernacSyntacticDefinition _
| VernacDeclareTacticDefinition _ | VernacTacticNotation _
| VernacRequire _ | VernacImport _ | VernacInclude _
| VernacDeclareMLModule _
| VernacContext _ (* TASSI: unsure *)
| VernacProofMode _
| VernacRequireFrom _ -> VtSideff [], VtNow
(* 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
(* Plugins should classify their commands *)
| VernacExtend (s,l) ->
try List.assoc s !classifiers l ()
with Not_found -> anomaly(str"No classifier for"++spc()++str s)
in
static_classifier e
let classify_as_query = VtQuery true, VtLater
let classify_as_sideeff = VtSideff [], VtLater
|
