* http://helm.cs.unibo.it/
*)
-type state_tag = [ `Command | `Proof ]
+(** Interpreter for textual phrases coming from matita's console (textual entry
+* window at the bottom of the main window).
+*
+* Interpreter is either in `Command state or in `Proof state (see state_tag type
+* below). In `Command state commands for starting proofs are accepted, but
+* tactic and tactical applications are not. In `Proof state both
+* tactic/tacticals and commands are accepted.
+*)
+
+open Printf
+
+open MatitaTypes
+
+ (** None means: "same state as before" *)
+type state_tag = [ `Command | `Proof ] option
+
+exception Command_error of string
+
+(*
+let uri name =
+ UriManager.uri_of_string (sprintf "%s/%s" BuildTimeConf.base_uri name)
+*)
+
+let baseuri = ref "cic:/matita"
+let qualify name =
+ let baseuri = !baseuri in
+ if baseuri.[String.length baseuri - 1] = '/' then
+ baseuri ^ name
+ else
+ String.concat "/" [baseuri; name]
+
+let canonical_context metano metasenv =
+ try
+ let (_, context, _) = List.find (fun (m, _, _) -> m = metano) metasenv in
+ context
+ with Not_found ->
+ failwith (sprintf "Can't find canonical context for %d" metano)
+
+let get_context_and_metasenv (proof_handler:MatitaTypes.proof_handler) =
+ if proof_handler.MatitaTypes.has_proof () then
+ let proof = proof_handler.MatitaTypes.get_proof () in
+ let metasenv = proof#metasenv in
+ let goal = proof#goal in
+ (canonical_context goal metasenv, metasenv)
+ else
+ ([], [])
+
+ (** term AST -> Cic.term. Uses disambiguator and change imperatively the
+ * metasenv as needed *)
+let disambiguate ~(disambiguator:MatitaTypes.disambiguator) ~proof_handler ast =
+ if proof_handler.MatitaTypes.has_proof () then begin
+ let proof = proof_handler.MatitaTypes.get_proof () in
+ let metasenv = proof#metasenv in
+ let goal = proof#goal in
+ let context = canonical_context goal metasenv in
+ let (_, metasenv, term) as retval =
+ disambiguator#disambiguateTermAst ~context ~metasenv ast
+ in
+ proof#set_metasenv metasenv;
+ retval
+ end else
+ disambiguator#disambiguateTermAst ast
+
+class virtual interpreterState =
+ (* static values, shared by all states inheriting this class *)
+ let loc = ref None in
+ let history = ref [] in
+ fun ~(console: MatitaConsole.console) ->
+ object (self)
-class type interpreterState =
- object
(** eval a toplevel phrase in the current state and return the new state
*)
- method evalPhrase: string -> state_tag
+ method parsePhrase s =
+ match CicTextualParser2.parse_tactical (Stream.of_string s) with
+ | (TacticAst.LocatedTactical (loc', tac)) as tactical ->
+ loc := Some loc';
+ (match tac with (* update interpreter history *)
+ | TacticAst.Command (TacticAst.Qed None) ->
+ history := `Qed :: !history
+ | TacticAst.Command (TacticAst.Theorem (_, Some name, _, None)) ->
+ history := `Theorem name :: !history
+ | TacticAst.Command (TacticAst.Qed _)
+ | TacticAst.Command (TacticAst.Theorem _) -> assert false
+ | _ -> history := `Tactic :: !history);
+ tactical
+ | _ -> assert false
+
+ method virtual evalTactical:
+ (CicAst.term, string) TacticAst.tactical -> state_tag
+
+(*
+ method undo ?(steps = 1) () =
+ for i = 1 to steps do
+ match List.hd !history with
+ | `Qed
+ FINQUI
+*)
+
+ method evalPhrase s =
+ debug_print (sprintf "evaluating '%s'" s);
+ self#evalTactical (self#parsePhrase s)
+
+ method endOffset =
+ match !loc with
+ | Some (start_pos, end_pos) -> end_pos.Lexing.pos_cnum
+ | None -> failwith "MatitaInterpreter: no offset recorded"
+
+ end
+
+let check_widget: MatitaTypes.sequent_viewer lazy_t = lazy
+ (let gui = MatitaGui.instance () in
+ MatitaMathView.sequent_viewer ~show:true ~packing:gui#check#scrolledCheck#add
+ ())
+
+ (** Implements phrases that should be accepted in all states *)
+class sharedState
+ ~(disambiguator: MatitaTypes.disambiguator)
+ ~(proof_handler: MatitaTypes.proof_handler)
+ ~(console: MatitaConsole.console)
+ ()
+=
+ object (self)
+ inherit interpreterState ~console
+ method evalTactical = function
+ | TacticAst.Command TacticAst.Quit ->
+ proof_handler.MatitaTypes.quit ();
+ Some `Command (* dummy answer, useless *)
+ | TacticAst.Command TacticAst.Proof ->
+ (* do nothing, just for compatibility with coq syntax *)
+ Some `Command
+ | TacticAst.Command (TacticAst.Baseuri (Some uri)) ->
+ baseuri := uri;
+ console#echo_message (sprintf "base uri set to \"%s\"" uri);
+ None
+ | TacticAst.Command (TacticAst.Baseuri None) ->
+ console#echo_message (sprintf "base uri is \"%s\"" !baseuri);
+ None
+ | TacticAst.Command (TacticAst.Check term) ->
+ let (_, _, term) = disambiguate ~disambiguator ~proof_handler term in
+ let (context, metasenv) = get_context_and_metasenv proof_handler in
+ let dummyno = CicMkImplicit.new_meta metasenv [] in
+ let ty = CicTypeChecker.type_of_aux' metasenv context term in
+ let expr = Cic.Cast (term, ty) in
+ let sequent = (dummyno, context, expr) in
+ let widget = Lazy.force check_widget in
+ let gui = MatitaGui.instance () in
+ gui#check#checkWin#show ();
+ gui#main#showCheckMenuItem#set_active true;
+ widget#load_sequent (sequent::metasenv) dummyno;
+ None
+ | tactical ->
+ raise (Command_error (TacticAstPp.pp_tactical tactical))
end
+ (** Implements phrases that should be accepted only in `Command state *)
class commandState
~(disambiguator: MatitaTypes.disambiguator)
~(proof_handler: MatitaTypes.proof_handler)
~(console: MatitaConsole.console)
()
=
- object
- method evalPhrase s: state_tag =
- let command = CicTextualParser2.parse_command (Stream.of_string s) in
- match command with
- | CommandAst.Theorem (_, _, Some name, ast, None) ->
+ let shared = new sharedState ~disambiguator ~proof_handler ~console () in
+ object (self)
+ inherit interpreterState ~console
+
+ method evalTactical = function
+ | TacticAst.LocatedTactical (_, tactical) -> self#evalTactical tactical
+ | TacticAst.Command (TacticAst.Theorem (_, Some name, ast, None)) ->
let (_, metasenv, expr) = disambiguator#disambiguateTermAst ast in
- let _ = CicTypeChecker.type_of_aux' metasenv [] expr in
- let proof = MatitaProof.proof ~typ:expr ~metasenv () in
+ let uri = UriManager.uri_of_string (qualify name) in
+ let proof = MatitaProof.proof ~typ:expr ~uri ~metasenv () in
proof_handler.MatitaTypes.new_proof proof;
- `Proof
- | CommandAst.Quit _ ->
+ Some `Proof
+ | TacticAst.Command TacticAst.Quit ->
proof_handler.MatitaTypes.quit ();
- `Command (* dummy answer *)
- | _ ->
- MatitaTypes.not_implemented (* TODO Zack *)
- "MatitaInterpreter.commandState#evalPhrase: commands other than full theorem ones";
- `Proof
+ Some `Command (* dummy answer, useless *)
+ | TacticAst.Command TacticAst.Proof ->
+ (* do nothing, just for compatibility with coq syntax *)
+ Some `Command
+ | tactical -> shared#evalTactical tactical
end
- (* TODO Zack FINQUI
- * bisogna rivedere la grammatica di tatticali/comandi
- * molti comandi (o addirittura tutti tranne Theorem) hanno senso anche nello
- * stato proof, e' quindi un casino parsare la phrase. Un'idea potrebbe essere
- * quella di tentare di parsare una tattica e se il parsing fallisce provare a
- * parsare un comando (BLEAARGH). Oppure si puo' aggiungere una possibile entry
- * nella grammatica delle tattiche che punti ad un comando (RI-BLEAARGH).
- * Oppure boh ...
- *)
+ (** create a ProofEngineTypes.mk_fresh_name_type function which uses given
+ * names as long as they are available, then it fallbacks to name generation
+ * using FreshNamesGenerator module *)
+let namer_of names =
+ let len = List.length names in
+ let count = ref 0 in
+ fun metasenv context name ~typ ->
+ if !count < len then begin
+ let name = Cic.Name (List.nth names !count) in
+ incr count;
+ name
+ end else
+ FreshNamesGenerator.mk_fresh_name metasenv context name ~typ
+
+ (** Implements phrases that should be accepted only in `Proof state, basically
+ * tacticals *)
class proofState
~(disambiguator: MatitaTypes.disambiguator)
~(proof_handler: MatitaTypes.proof_handler)
~(console: MatitaConsole.console)
()
=
- object
- method evalPhrase (s: string): state_tag =
- (* TODO Zack *)
- MatitaTypes.not_implemented "MatitaInterpreter.proofState#evalPhrase";
- `Command
+ let disambiguate ast =
+ let (_, _, term) = disambiguate ~disambiguator ~proof_handler ast in
+ term
+ in
+ (** tactic AST -> ProofEngineTypes.tactic *)
+ let rec lookup_tactic = function
+ | TacticAst.LocatedTactic (_, tactic) -> lookup_tactic tactic
+ | TacticAst.Intros (_, names) -> (* TODO Zack implement intros length *)
+ PrimitiveTactics.intros_tac ~mk_fresh_name_callback:(namer_of names) ()
+ | TacticAst.Reflexivity -> Tactics.reflexivity
+ | TacticAst.Assumption -> Tactics.assumption
+ | TacticAst.Contradiction -> Tactics.contradiction
+ | TacticAst.Exists -> Tactics.exists
+ | TacticAst.Fourier -> Tactics.fourier
+ | TacticAst.Left -> Tactics.left
+ | TacticAst.Right -> Tactics.right
+ | TacticAst.Ring -> Tactics.ring
+ | TacticAst.Split -> Tactics.split
+ | TacticAst.Symmetry -> Tactics.symmetry
+ | TacticAst.Transitivity term -> Tactics.transitivity (disambiguate term)
+ | TacticAst.Apply term -> Tactics.apply (disambiguate term)
+ | TacticAst.Absurd term -> Tactics.absurd (disambiguate term)
+ | TacticAst.Exact term -> Tactics.exact (disambiguate term)
+ | TacticAst.Cut term -> Tactics.cut (disambiguate term)
+ | TacticAst.Elim (term, _) -> (* TODO Zack implement "using" argument *)
+ Tactics.elim_intros_simpl (disambiguate term)
+ | TacticAst.ElimType term -> Tactics.elim_type (disambiguate term)
+ | TacticAst.Replace (what, with_what) ->
+ Tactics.replace ~what:(disambiguate what)
+ ~with_what:(disambiguate with_what)
+ (*
+ (* TODO Zack a lot more of tactics to be implemented here ... *)
+ | TacticAst.Change of 'term * 'term * 'ident option
+ | TacticAst.Change_pattern of 'term pattern * 'term * 'ident option
+ | TacticAst.Decompose of 'ident * 'ident list
+ | TacticAst.Discriminate of 'ident
+ | TacticAst.Fold of reduction_kind * 'term
+ | TacticAst.Injection of 'ident
+ | TacticAst.LetIn of 'term * 'ident
+ | TacticAst.Reduce of reduction_kind * 'term pattern * 'ident option
+ | TacticAst.Replace_pattern of 'term pattern * 'term
+ | TacticAst.Rewrite of direction * 'term * 'ident option
+ *)
+ | _ ->
+ MatitaTypes.not_implemented "some tactic"
+ in
+ let shared = new sharedState ~disambiguator ~proof_handler ~console () in
+ object (self)
+ inherit interpreterState ~console
+
+ method evalTactical = function
+ | TacticAst.LocatedTactical (_, tactical) -> self#evalTactical tactical
+ | TacticAst.Command TacticAst.Abort ->
+ proof_handler.MatitaTypes.abort_proof ();
+ Some `Command
+ | TacticAst.Command (TacticAst.Undo steps) ->
+ (proof_handler.MatitaTypes.get_proof ())#undo ?steps ();
+ Some `Proof
+ | TacticAst.Command (TacticAst.Redo steps) ->
+ (proof_handler.MatitaTypes.get_proof ())#redo ?steps ();
+ Some `Proof
+ | TacticAst.Command (TacticAst.Qed None) ->
+ (* TODO Zack this function probably should not simply fail with
+ * Failure, but rather raise some more meaningful exception *)
+ if not (proof_handler.MatitaTypes.has_proof ()) then assert false;
+ let proof = proof_handler.MatitaTypes.get_proof () in
+ let (uri, metasenv, bo, ty) = proof#proof in
+ let uri = MatitaTypes.unopt_uri uri in
+ if metasenv <> [] then failwith "Proof not completed";
+ let proved_ty = CicTypeChecker.type_of_aux' [] [] bo in
+ if not (CicReduction.are_convertible [] proved_ty ty) then
+ failwith "Wrong proof";
+ (* TODO Zack [] probably wrong *)
+ CicEnvironment.add_type_checked_term uri
+ (Cic.Constant ((UriManager.name_of_uri uri),(Some bo),ty,[]));
+ proof_handler.MatitaTypes.set_proof None;
+ (MatitaMathView.proof_viewer_instance ())#unload;
+ (* TODO Zack a lot more to be done here:
+ * - save object to disk in xml format
+ * - collect metadata
+ * - register uri to the getter *)
+ Some `Command
+ | TacticAst.Seq tacticals ->
+ (* TODO Zack check for proof completed at each step? *)
+ List.iter (fun t -> ignore (self#evalTactical t)) tacticals;
+ Some `Proof
+ | TacticAst.Tactic tactic_phrase ->
+ let tactic = lookup_tactic tactic_phrase in
+ (proof_handler.MatitaTypes.get_proof ())#apply_tactic tactic;
+ Some `Proof
+ | tactical -> shared#evalTactical tactical
end
class interpreter
()
=
let commandState =
- lazy (new commandState ~disambiguator ~proof_handler ~console ())
+ new commandState ~disambiguator ~proof_handler ~console ()
in
- let proofState =
- lazy (new proofState ~disambiguator ~proof_handler ~console ())
- in
- object
- val mutable state = Lazy.force commandState
+ let proofState = new proofState ~disambiguator ~proof_handler ~console () in
+ object (self)
+ val mutable state = commandState
+
+ method reset = state <- commandState
+
+ method endOffset = state#endOffset
+
+ method private updateState = function
+ | Some `Command -> state <- commandState
+ | Some `Proof -> state <- proofState
+ | None -> ()
+
+ method evalPhrase ?(transparent = false) s =
+ try
+ self#updateState (state#evalPhrase s)
+ with exn ->
+ if transparent then
+ raise exn
+ else
+ console#echo_error (sprintf "Uncaught exception: %s"
+ (Printexc.to_string exn))
- method evalPhrase s =
- match state#evalPhrase s with
- | `Command -> state <- Lazy.force commandState
- | `Proof -> state <- Lazy.force proofState
end
projects / helm.git / blobdiff