X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=helm%2Fmatita%2FmatitaInterpreter.ml;h=d5ca65d22bebddf4dddaf3aa131bc807e1703b93;hb=6b7f04b45232e6c690cacf5815c85c39de1f52b3;hp=f5dd123f53ef6a18c6e29a43c7a9587621d7888e;hpb=4cf419a2e770f4971be7b03b1d73e585d973dc1b;p=helm.git

diff --git a/helm/matita/matitaInterpreter.ml b/helm/matita/matitaInterpreter.ml
index f5dd123f5..d5ca65d22 100644
--- a/helm/matita/matitaInterpreter.ml
+++ b/helm/matita/matitaInterpreter.ml
@@ -23,11 +23,56 @@
  * http://helm.cs.unibo.it/
  *)
 
+(** 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
 
-type state_tag = [ `Command | `Proof ]
+  (** 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 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)
 
-exception Command_not_found of string
+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 ~(console: MatitaConsole.console) =
   object (self)
@@ -39,66 +84,194 @@ class virtual interpreterState ~(console: MatitaConsole.console) =
       (CicAst.term, string) TacticAst.tactical -> state_tag
 
     method evalPhrase s = self#evalTactical (self#parsePhrase s)
+
   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.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)
   ()
 =
+  let shared = new sharedState ~disambiguator ~proof_handler ~console () in
   object (self)
     inherit interpreterState ~console
 
     method evalTactical = function
-(*
-      | TacticAst.Command _ -> failwith "1"
-      | TacticAst.Tactic _ -> failwith "2"
-      | TacticAst.LocatedTactical _ -> failwith "3"
-      | TacticAst.Fail -> failwith "4"
-      | TacticAst.Do (_, _) -> failwith "5"
-      | TacticAst.IdTac -> failwith "6"
-      | TacticAst.Repeat _ -> failwith "7"
-      | TacticAst.Seq _ -> failwith "8"
-      | TacticAst.Then (_, _) -> failwith "9"
-      | TacticAst.Tries _ -> failwith "10"
-      | TacticAst.Try _ -> failwith "11"
-*)
       | TacticAst.LocatedTactical (_, tactical) -> self#evalTactical tactical
-      | TacticAst.Command (TacticAst.Theorem (_, Some name, ast, None)) ->
+      | TacticAst.Command (TacticAst.Theorem (_, name_opt, 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 =
+            match name_opt with
+            | None -> None
+            | Some name -> Some (uri name)
+          in
+          let proof = MatitaProof.proof ~typ:expr ?uri ~metasenv () in
           proof_handler.MatitaTypes.new_proof proof;
-          `Proof
+          Some `Proof
       | TacticAst.Command TacticAst.Quit ->
           proof_handler.MatitaTypes.quit ();
-          `Command (* dummy answer, useless *)
+          Some `Command (* dummy answer, useless *)
       | TacticAst.Command TacticAst.Proof ->
             (* do nothing, just for compatibility with coq syntax *)
-          `Command
-      | tactical ->
-          raise (Command_not_found (TacticAstPp.pp_tactical tactical))
+          Some `Command
+      | tactical -> shared#evalTactical tactical
   end
 
+  (** 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)
   ()
 =
-  let commandState =
-    new commandState ~disambiguator ~proof_handler ~console ()
+  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
-  object
+  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 name_opt) ->
+          (* 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
+          (match name_opt with
+          | None -> ()
+          | Some name -> proof#set_uri (uri name));
+          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;
-          `Command
-      | tactical -> (* fallback on command state *)
-          commandState#evalTactical tactical
+          (* 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
@@ -111,16 +284,39 @@ class interpreter
     new commandState ~disambiguator ~proof_handler ~console ()
   in
   let proofState = new proofState ~disambiguator ~proof_handler ~console () in
-  object
+  object (self)
     val mutable state = commandState
 
+    method reset = state <- commandState
+
+    method private updateState = function
+      | Some `Command -> state <- commandState
+      | Some `Proof -> state <- proofState
+      | None -> ()
+
     method evalPhrase s =
       try
-        (match state#evalPhrase s with
-        | `Command -> state <- commandState
-        | `Proof -> state <- proofState)
+        self#updateState (state#evalPhrase s)
       with exn ->
         console#echo_error (sprintf "Uncaught exception: %s"
           (Printexc.to_string exn))
+
+(*
+    method evalAll s =
+      let get_end_pos = function
+        | TacticAst.LocatedTactical ((_, end_pos), _) -> end_pos.Lexing.pos_cnum
+        | _ -> assert false
+      in
+      let str_len = String.length s in
+      let rec aux offset =
+        let tactical =
+          self#parsePhrase (String.sub s offset (str_len - offset))
+        in
+        self#updateState (state#evalTactical tactical);
+        let next_offset = get_end_pos tactical + offset in
+        if next_offset = str_len - 1 then
+      in
+*)
+
   end