src/Pure/Isar/toplevel.ML
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(*  Title:      Pure/Isar/toplevel.ML
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    ID:         $Id$
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    Author:     Markus Wenzel, TU Muenchen
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The Isabelle/Isar toplevel.
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*)
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signature TOPLEVEL =
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sig
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  exception UNDEF
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  type generic_theory
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  type node
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  val theory_node: node -> generic_theory option
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  val proof_node: node -> ProofHistory.T option
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  val cases_node: (generic_theory -> 'a) -> (Proof.state -> 'a) -> node -> 'a
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  val presentation_context: node option -> xstring option -> Proof.context
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  type state
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  val is_toplevel: state -> bool
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  val is_theory: state -> bool
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  val is_proof: state -> bool
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  val level: state -> int
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  val node_history_of: state -> node History.T
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  val node_of: state -> node
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  val node_case: (generic_theory -> 'a) -> (Proof.state -> 'a) -> state -> 'a
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  val context_of: state -> Proof.context
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  val generic_theory_of: state -> generic_theory
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  val theory_of: state -> theory
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  val proof_of: state -> Proof.state
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  val proof_position_of: state -> int
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  val enter_proof_body: state -> Proof.state
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  val print_state_context: state -> unit
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  val print_state: bool -> state -> unit
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  val quiet: bool ref
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  val debug: bool ref
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  val interact: bool ref
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  val timing: bool ref
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  val profiling: int ref
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  val skip_proofs: bool ref
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  exception TERMINATE
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  exception RESTART
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  exception TOPLEVEL_ERROR
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  val exn_message: exn -> string
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  val program: (unit -> 'a) -> 'a
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  type transition
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  val undo_limit: bool -> int option
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  val empty: transition
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  val name_of: transition -> string
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  val source_of: transition -> OuterLex.token list option
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  val name: string -> transition -> transition
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  val position: Position.T -> transition -> transition
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  val source: OuterLex.token list -> transition -> transition
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  val interactive: bool -> transition -> transition
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  val print: transition -> transition
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  val print': string -> transition -> transition
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  val three_buffersN: string
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  val print3: transition -> transition
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  val no_timing: transition -> transition
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  val init_theory: (bool -> theory) -> (theory -> unit) -> (theory -> unit) ->
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    transition -> transition
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  val init_empty: (state -> bool) -> (unit -> unit) -> transition -> transition
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  val exit: transition -> transition
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  val undo_exit: transition -> transition
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  val kill: transition -> transition
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  val history: (node History.T -> node History.T) -> transition -> transition
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  val keep: (state -> unit) -> transition -> transition
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  val keep': (bool -> state -> unit) -> transition -> transition
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  val imperative: (unit -> unit) -> transition -> transition
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  val theory: (theory -> theory) -> transition -> transition
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  val theory': (bool -> theory -> theory) -> transition -> transition
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  val begin_local_theory: bool -> (theory -> local_theory) -> transition -> transition
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  val end_local_theory: transition -> transition
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  val local_theory: xstring option -> (local_theory -> local_theory) -> transition -> transition
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  val present_local_theory: xstring option -> (bool -> node -> unit) -> transition -> transition
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  val local_theory_to_proof': xstring option -> (bool -> local_theory -> Proof.state) ->
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    transition -> transition
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  val local_theory_to_proof: xstring option -> (local_theory -> Proof.state) ->
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    transition -> transition
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  val theory_to_proof: (theory -> Proof.state) -> transition -> transition
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  val end_proof: (bool -> Proof.state -> Proof.context) -> transition -> transition
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  val forget_proof: transition -> transition
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  val present_proof: (bool -> node -> unit) -> transition -> transition
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  val proofs': (bool -> Proof.state -> Proof.state Seq.seq) -> transition -> transition
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  val proof': (bool -> Proof.state -> Proof.state) -> transition -> transition
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  val proofs: (Proof.state -> Proof.state Seq.seq) -> transition -> transition
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  val proof: (Proof.state -> Proof.state) -> transition -> transition
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  val actual_proof: (ProofHistory.T -> ProofHistory.T) -> transition -> transition
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  val skip_proof: (int History.T -> int History.T) -> transition -> transition
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  val skip_proof_to_theory: (int -> bool) -> transition -> transition
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  val unknown_theory: transition -> transition
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  val unknown_proof: transition -> transition
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  val unknown_context: transition -> transition
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  val present_excursion: (transition * (state -> state -> 'a -> 'a)) list -> 'a -> 'a
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  val excursion: transition list -> unit
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  val set_state: state -> unit
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  val get_state: unit -> state
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  val exn: unit -> (exn * string) option
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  val >> : transition -> bool
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  val >>> : transition list -> unit
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  val init_state: unit -> unit
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  type 'a isar
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  val loop: 'a isar -> unit
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end;
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structure Toplevel: TOPLEVEL =
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struct
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(** toplevel state **)
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exception UNDEF;
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(* local theory wrappers *)
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type generic_theory = Context.generic;    (*theory or local_theory*)
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val loc_init = TheoryTarget.context;
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val loc_exit = ProofContext.theory_of o LocalTheory.exit;
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fun loc_begin loc (Context.Theory thy) = loc_init (the_default "-" loc) thy
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  | loc_begin NONE (Context.Proof lthy) = lthy
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  | loc_begin (SOME loc) (Context.Proof lthy) = loc_init loc (loc_exit lthy);
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fun loc_finish _ (Context.Theory _) = Context.Theory o loc_exit
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  | loc_finish NONE (Context.Proof _) = Context.Proof o LocalTheory.restore
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  | loc_finish (SOME _) (Context.Proof lthy) = fn lthy' =>
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      Context.Proof (LocalTheory.reinit (LocalTheory.raw_theory (K (loc_exit lthy')) lthy));
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(* datatype node *)
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datatype node =
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  Theory of generic_theory * Proof.context option | (*theory with presentation context*)
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  Proof of ProofHistory.T * ((Proof.context -> generic_theory) * generic_theory) |
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    (*history of proof states, finish, original theory*)
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  SkipProof of int History.T * (generic_theory * generic_theory);
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    (*history of proof depths, resulting theory, original theory*)
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val the_global_theory = fn Theory (Context.Theory thy, _) => thy | _ => raise UNDEF;
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val theory_node = fn Theory (gthy, _) => SOME gthy | _ => NONE;
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val proof_node = fn Proof (prf, _) => SOME prf | _ => NONE;
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fun cases_node f _ (Theory (gthy, _)) = f gthy
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  | cases_node _ g (Proof (prf, _)) = g (ProofHistory.current prf)
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  | cases_node f _ (SkipProof (_, (gthy, _))) = f gthy;
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fun presentation_context (SOME (Theory (_, SOME ctxt))) NONE = ctxt
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  | presentation_context (SOME node) NONE = cases_node Context.proof_of Proof.context_of node
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  | presentation_context (SOME node) (SOME loc) =
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      loc_init loc (cases_node Context.theory_of Proof.theory_of node)
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  | presentation_context NONE _ = raise UNDEF;
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(* datatype state *)
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type state_info = node History.T * ((theory -> unit) * (theory -> unit));
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datatype state =
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  Toplevel of state_info option |  (*outer toplevel, leftover end state*)
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  State of state_info;
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val toplevel = Toplevel NONE;
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fun is_toplevel (Toplevel _) = true
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  | is_toplevel _ = false;
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fun level (Toplevel _) = 0
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  | level (State (node, _)) =
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      (case History.current node of
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        Theory _ => 0
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      | Proof (prf, _) => Proof.level (ProofHistory.current prf)
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      | SkipProof (h, _) => History.current h + 1);   (*different notion of proof depth!*)
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fun str_of_state (Toplevel _) = "at top level"
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  | str_of_state (State (node, _)) =
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      (case History.current node of
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        Theory (Context.Theory _, _) => "in theory mode"
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      | Theory (Context.Proof _, _) => "in local theory mode"
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      | Proof _ => "in proof mode"
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      | SkipProof _ => "in skipped proof mode");
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(* top node *)
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fun node_history_of (Toplevel _) = raise UNDEF
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  | node_history_of (State (node, _)) = node;
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val node_of = History.current o node_history_of;
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fun is_theory state = not (is_toplevel state) andalso is_some (theory_node (node_of state));
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fun is_proof state = not (is_toplevel state) andalso is_some (proof_node (node_of state));
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fun node_case f g state = cases_node f g (node_of state);
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val context_of = node_case Context.proof_of Proof.context_of;
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val generic_theory_of = node_case I (Context.Proof o Proof.context_of);
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val theory_of = node_case Context.theory_of Proof.theory_of;
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val proof_of = node_case (fn _ => raise UNDEF) I;
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fun proof_position_of state =
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  (case node_of state of
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    Proof (prf, _) => ProofHistory.position prf
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  | _ => raise UNDEF);
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val enter_proof_body = node_case (Proof.init o Context.proof_of) Proof.enter_forward;
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(* print state *)
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val pretty_context = LocalTheory.pretty o Context.cases (TheoryTarget.init NONE) I;
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fun print_state_context state =
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  (case try node_of state of
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    NONE => []
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  | SOME (Theory (gthy, _)) => pretty_context gthy
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  | SOME (Proof (_, (_, gthy))) => pretty_context gthy
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  | SOME (SkipProof (_, (gthy, _))) => pretty_context gthy)
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  |> Pretty.chunks |> Pretty.writeln;
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fun print_state prf_only state =
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  (case try node_of state of
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    NONE => []
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  | SOME (Theory (gthy, _)) => if prf_only then [] else pretty_context gthy
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  | SOME (Proof (prf, _)) =>
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      Proof.pretty_state (ProofHistory.position prf) (ProofHistory.current prf)
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  | SOME (SkipProof (h, _)) =>
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      [Pretty.str ("skipped proof: depth " ^ string_of_int (History.current h))])
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  |> Pretty.markup_chunks Markup.state |> Pretty.writeln;
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(** toplevel transitions **)
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val quiet = ref false;
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val debug = Output.debugging;
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val interact = ref false;
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val timing = Output.timing;
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val profiling = ref 0;
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val skip_proofs = ref false;
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exception TERMINATE;
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exception RESTART;
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exception EXCURSION_FAIL of exn * string;
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exception FAILURE of state * exn;
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exception TOPLEVEL_ERROR;
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(* print exceptions *)
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local
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fun with_context f xs =
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  (case ML_Context.get_context () of NONE => []
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  | SOME context => map (f (Context.proof_of context)) xs);
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fun raised name [] = "exception " ^ name ^ " raised"
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  | raised name [msg] = "exception " ^ name ^ " raised: " ^ msg
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  | raised name msgs = cat_lines (("exception " ^ name ^ " raised:") :: msgs);
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fun exn_msg _ TERMINATE = "Exit."
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  | exn_msg _ RESTART = "Restart."
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  | exn_msg _ Interrupt = "Interrupt."
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  | exn_msg _ TOPLEVEL_ERROR = "Error."
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  | exn_msg _ (SYS_ERROR msg) = "## SYSTEM ERROR ##\n" ^ msg
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  | exn_msg _ (ERROR msg) = msg
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  | exn_msg detailed (Exn.EXCEPTIONS (exns, "")) = cat_lines (map (exn_msg detailed) exns)
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  | exn_msg detailed (Exn.EXCEPTIONS (exns, msg)) = cat_lines (map (exn_msg detailed) exns @ [msg])
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  | exn_msg detailed (EXCURSION_FAIL (exn, msg)) = cat_lines [exn_msg detailed exn, msg]
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  | exn_msg false (THEORY (msg, _)) = msg
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  | exn_msg true (THEORY (msg, thys)) = raised "THEORY" (msg :: map Context.str_of_thy thys)
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  | exn_msg false (Syntax.AST (msg, _)) = raised "AST" [msg]
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  | exn_msg true (Syntax.AST (msg, asts)) =
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      raised "AST" (msg :: map (Pretty.string_of o Syntax.pretty_ast) asts)
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  | exn_msg false (TYPE (msg, _, _)) = raised "TYPE" [msg]
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  | exn_msg true (TYPE (msg, Ts, ts)) = raised "TYPE" (msg ::
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        with_context Syntax.string_of_typ Ts @ with_context Syntax.string_of_term ts)
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  | exn_msg false (TERM (msg, _)) = raised "TERM" [msg]
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  | exn_msg true (TERM (msg, ts)) =
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      raised "TERM" (msg :: with_context Syntax.string_of_term ts)
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  | exn_msg false (THM (msg, _, _)) = raised "THM" [msg]
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  | exn_msg true (THM (msg, i, thms)) =
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      raised ("THM " ^ string_of_int i) (msg :: with_context ProofContext.string_of_thm thms)
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  | exn_msg _ Option.Option = raised "Option" []
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  | exn_msg _ Library.UnequalLengths = raised "UnequalLengths" []
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  | exn_msg _ Empty = raised "Empty" []
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  | exn_msg _ Subscript = raised "Subscript" []
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  | exn_msg _ (Fail msg) = raised "Fail" [msg]
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  | exn_msg _ exn = General.exnMessage exn;
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in
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fun exn_message exn = exn_msg (! debug) exn;
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fun print_exn NONE = ()
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  | print_exn (SOME (exn, s)) = Output.error_msg (cat_lines [exn_message exn, s]);
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end;
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(* controlled execution *)
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local
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fun debugging f x =
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  if ! debug then exception_trace (fn () => f x)
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  else f x;
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fun interruptible f x =
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  let val y = ref NONE
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  in raise_interrupt (fn () => y := SOME (f x)) (); the (! y) end;
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fun toplevel_error f x = f x
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  handle exn => (Output.error_msg (exn_message exn); raise TOPLEVEL_ERROR);
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in
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fun controlled_execution f =
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  f
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  |> debugging
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  |> interruptible;
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fun program f =
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 (f
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  |> debugging
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  |> toplevel_error) ();
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end;
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(* node transactions and recovery from stale theories *)
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(*NB: proof commands should be non-destructive!*)
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local
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fun is_stale state = Context.is_stale (theory_of state) handle UNDEF => false;
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val stale_theory = ERROR "Stale theory encountered after succesful execution!";
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fun map_theory f = History.map_current
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  (fn Theory (gthy, _) => Theory (Context.mapping f (LocalTheory.raw_theory f) gthy, NONE)
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    | node => node);
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fun context_position pos = History.map_current
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  (fn Theory (gthy, ctxt) => Theory (ContextPosition.put pos gthy, ctxt)
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    | Proof (prf, x) =>
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        Proof (ProofHistory.map_current (Proof.map_context (ContextPosition.put_ctxt pos)) prf, x)
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    | node => node);
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fun return (result, NONE) = result
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  | return (result, SOME exn) = raise FAILURE (result, exn);
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in
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fun transaction hist pos f (node, term) =
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  let
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    val cont_node = map_theory Theory.checkpoint node;
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    val back_node = map_theory Theory.copy cont_node;
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    fun state nd = State (nd, term);
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    fun normal_state nd = (state nd, NONE);
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    fun error_state nd exn = (state nd, SOME exn);
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    val (result, err) =
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   364
      cont_node
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   365
      |> context_position pos
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      |> map_theory Theory.checkpoint
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      |> (f
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          |> (if hist then History.apply' (History.current back_node) else History.map_current)
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          |> controlled_execution)
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      |> context_position Position.none
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      |> normal_state
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      handle exn => error_state cont_node exn;
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  in
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    if is_stale result
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   375
    then return (error_state back_node (the_default stale_theory err))
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    else return (result, err)
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  end;
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end;
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(* primitive transitions *)
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   383
18563
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   384
(*Note: Recovery from stale theories is provided only for theory-level
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  operations via Transaction.  Other node or state operations should
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  not touch theories at all.  Interrupts are enabled only for Keep and
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   387
  Transaction.*)
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1feeadaad6a9 The Isabelle/Isar toplevel.
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datatype trans =
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   390
  Init of (bool -> theory) * ((theory -> unit) * (theory -> unit)) |
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                                                    (*init node; with exit/kill operation*)
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  InitEmpty of (state -> bool) * (unit -> unit) |   (*init empty toplevel*)
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  Exit |                                            (*conclude node -- deferred until init*)
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  UndoExit |                                        (*continue after conclusion*)
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   395
  Kill |                                            (*abort node*)
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   396
  History of node History.T -> node History.T |     (*history operation (undo etc.)*)
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   397
  Keep of bool -> state -> unit |                   (*peek at state*)
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   398
  Transaction of bool * (bool -> node -> node);     (*node transaction*)
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   399
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   400
fun undo_limit int = if int then NONE else SOME 0;
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   401
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   402
fun safe_exit (Toplevel (SOME (node, (exit, _)))) =
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diff changeset
   403
    (case try the_global_theory (History.current node) of
25219
084f468145e3 safe_exit: controlled_execution;
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diff changeset
   404
      SOME thy => controlled_execution exit thy
22056
858016d00449 fixed exit: proper type check of state;
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diff changeset
   405
    | NONE => ())
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diff changeset
   406
  | safe_exit _ = ();
21958
9dfd1ca4c0a0 refined notion of empty toplevel, admits undo of 'end';
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diff changeset
   407
6689
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   408
local
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1feeadaad6a9 The Isabelle/Isar toplevel.
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diff changeset
   409
21958
9dfd1ca4c0a0 refined notion of empty toplevel, admits undo of 'end';
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diff changeset
   410
fun keep_state int f = controlled_execution (fn x => tap (f int) x);
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   411
23363
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   412
fun apply_tr int _ (Init (f, term)) (state as Toplevel _) =
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858016d00449 fixed exit: proper type check of state;
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diff changeset
   413
      let val node = Theory (Context.Theory (f int), NONE)
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parents: 22014
diff changeset
   414
      in safe_exit state; State (History.init (undo_limit int) node, term) end
25441
4028958d19ff init_empty: check before change (avoids non-linear update);
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parents: 25292
diff changeset
   415
  | apply_tr int _ (InitEmpty (check, f)) (state as Toplevel _) =
4028958d19ff init_empty: check before change (avoids non-linear update);
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parents: 25292
diff changeset
   416
      if check state then (safe_exit state; keep_state int (fn _ => fn _ => f ()) toplevel)
4028958d19ff init_empty: check before change (avoids non-linear update);
wenzelm
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diff changeset
   417
      else raise UNDEF
23363
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diff changeset
   418
  | apply_tr _ _ Exit (State (node, term)) =
22056
858016d00449 fixed exit: proper type check of state;
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diff changeset
   419
      (the_global_theory (History.current node); Toplevel (SOME (node, term)))
23363
9981199bf865 transaction: context_position (non-destructive only);
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diff changeset
   420
  | apply_tr _ _ UndoExit (Toplevel (SOME state_info)) = State state_info
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   421
  | apply_tr _ _ Kill (State (node, (_, kill))) =
22056
858016d00449 fixed exit: proper type check of state;
wenzelm
parents: 22014
diff changeset
   422
      (kill (the_global_theory (History.current node)); toplevel)
23363
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diff changeset
   423
  | apply_tr _ _ (History f) (State (node, term)) = State (f node, term)
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diff changeset
   424
  | apply_tr int _ (Keep f) state = keep_state int f state
9981199bf865 transaction: context_position (non-destructive only);
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diff changeset
   425
  | apply_tr int pos (Transaction (hist, f)) (State state) =
9981199bf865 transaction: context_position (non-destructive only);
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diff changeset
   426
      transaction hist pos (fn x => f int x) state
9981199bf865 transaction: context_position (non-destructive only);
wenzelm
parents: 22588
diff changeset
   427
  | apply_tr _ _ _ _ = raise UNDEF;
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1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
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diff changeset
   428
23363
9981199bf865 transaction: context_position (non-destructive only);
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diff changeset
   429
fun apply_union _ _ [] state = raise FAILURE (state, UNDEF)
9981199bf865 transaction: context_position (non-destructive only);
wenzelm
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diff changeset
   430
  | apply_union int pos (tr :: trs) state =
9981199bf865 transaction: context_position (non-destructive only);
wenzelm
parents: 22588
diff changeset
   431
      apply_tr int pos tr state
9981199bf865 transaction: context_position (non-destructive only);
wenzelm
parents: 22588
diff changeset
   432
        handle UNDEF => apply_union int pos trs state
9981199bf865 transaction: context_position (non-destructive only);
wenzelm
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diff changeset
   433
          | FAILURE (alt_state, UNDEF) => apply_union int pos trs alt_state
6689
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diff changeset
   434
          | exn as FAILURE _ => raise exn
wenzelm
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diff changeset
   435
          | exn => raise FAILURE (state, exn);
wenzelm
parents: 6664
diff changeset
   436
wenzelm
parents: 6664
diff changeset
   437
in
wenzelm
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diff changeset
   438
23363
9981199bf865 transaction: context_position (non-destructive only);
wenzelm
parents: 22588
diff changeset
   439
fun apply_trans int pos trs state = (apply_union int pos trs state, NONE)
15531
08c8dad8e399 Deleted Library.option type.
skalberg
parents: 15519
diff changeset
   440
  handle FAILURE (alt_state, exn) => (alt_state, SOME exn) | exn => (state, SOME exn);
6689
wenzelm
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   441
wenzelm
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diff changeset
   442
end;
5828
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   443
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   444
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   445
(* datatype transition *)
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   446
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   447
datatype transition = Transition of
16815
13d20ed9086c added print_state_hook;
wenzelm
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diff changeset
   448
 {name: string,                        (*command name*)
13d20ed9086c added print_state_hook;
wenzelm
parents: 16729
diff changeset
   449
  pos: Position.T,                     (*source position*)
13d20ed9086c added print_state_hook;
wenzelm
parents: 16729
diff changeset
   450
  source: OuterLex.token list option,  (*source text*)
13d20ed9086c added print_state_hook;
wenzelm
parents: 16729
diff changeset
   451
  int_only: bool,                      (*interactive-only*)
13d20ed9086c added print_state_hook;
wenzelm
parents: 16729
diff changeset
   452
  print: string list,                  (*print modes (union)*)
13d20ed9086c added print_state_hook;
wenzelm
parents: 16729
diff changeset
   453
  no_timing: bool,                     (*suppress timing*)
13d20ed9086c added print_state_hook;
wenzelm
parents: 16729
diff changeset
   454
  trans: trans list};                  (*primitive transitions (union)*)
5828
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   455
14923
8a32071c3c13 added name_of, source_of, source;
wenzelm
parents: 14825
diff changeset
   456
fun make_transition (name, pos, source, int_only, print, no_timing, trans) =
8a32071c3c13 added name_of, source_of, source;
wenzelm
parents: 14825
diff changeset
   457
  Transition {name = name, pos = pos, source = source,
8a32071c3c13 added name_of, source_of, source;
wenzelm
parents: 14825
diff changeset
   458
    int_only = int_only, print = print, no_timing = no_timing, trans = trans};
5828
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   459
14923
8a32071c3c13 added name_of, source_of, source;
wenzelm
parents: 14825
diff changeset
   460
fun map_transition f (Transition {name, pos, source, int_only, print, no_timing, trans}) =
8a32071c3c13 added name_of, source_of, source;
wenzelm
parents: 14825
diff changeset
   461
  make_transition (f (name, pos, source, int_only, print, no_timing, trans));
5828
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   462
16607
81e687c63e29 added print': print depending on print_mode;
wenzelm
parents: 16490
diff changeset
   463
val empty = make_transition ("<unknown>", Position.none, NONE, false, [], false, []);
14923
8a32071c3c13 added name_of, source_of, source;
wenzelm
parents: 14825
diff changeset
   464
8a32071c3c13 added name_of, source_of, source;
wenzelm
parents: 14825
diff changeset
   465
fun name_of (Transition {name, ...}) = name;
8a32071c3c13 added name_of, source_of, source;
wenzelm
parents: 14825
diff changeset
   466
fun source_of (Transition {source, ...}) = source;
5828
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   467
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   468
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   469
(* diagnostics *)
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   470
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   471
fun str_of_transition (Transition {name, pos, ...}) = quote name ^ Position.str_of pos;
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   472
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   473
fun command_msg msg tr = msg ^ "command " ^ str_of_transition tr;
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   474
fun at_command tr = command_msg "At " tr ^ ".";
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   475
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   476
fun type_error tr state =
18685
725660906cb3 sane ERROR vs. TOPLEVEL_ERROR handling;
wenzelm
parents: 18664
diff changeset
   477
  ERROR (command_msg "Illegal application of " tr ^ " " ^ str_of_state state);
5828
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   478
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   479
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   480
(* modify transitions *)
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   481
14923
8a32071c3c13 added name_of, source_of, source;
wenzelm
parents: 14825
diff changeset
   482
fun name nm = map_transition (fn (_, pos, source, int_only, print, no_timing, trans) =>
8a32071c3c13 added name_of, source_of, source;
wenzelm
parents: 14825
diff changeset
   483
  (nm, pos, source, int_only, print, no_timing, trans));
5828
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   484
14923
8a32071c3c13 added name_of, source_of, source;
wenzelm
parents: 14825
diff changeset
   485
fun position pos = map_transition (fn (name, _, source, int_only, print, no_timing, trans) =>
8a32071c3c13 added name_of, source_of, source;
wenzelm
parents: 14825
diff changeset
   486
  (name, pos, source, int_only, print, no_timing, trans));
9010
ce78dc5e1a73 Toplevel.no_timing;
wenzelm
parents: 8999
diff changeset
   487
14923
8a32071c3c13 added name_of, source_of, source;
wenzelm
parents: 14825
diff changeset
   488
fun source src = map_transition (fn (name, pos, _, int_only, print, no_timing, trans) =>
15531
08c8dad8e399 Deleted Library.option type.
skalberg
parents: 15519
diff changeset
   489
  (name, pos, SOME src, int_only, print, no_timing, trans));
5828
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   490
14923
8a32071c3c13 added name_of, source_of, source;
wenzelm
parents: 14825
diff changeset
   491
fun interactive int_only = map_transition (fn (name, pos, source, _, print, no_timing, trans) =>
8a32071c3c13 added name_of, source_of, source;
wenzelm
parents: 14825
diff changeset
   492
  (name, pos, source, int_only, print, no_timing, trans));
8a32071c3c13 added name_of, source_of, source;
wenzelm
parents: 14825
diff changeset
   493
17363
046c829c075f added three_buffersN, print3;
wenzelm
parents: 17321
diff changeset
   494
val no_timing = map_transition (fn (name, pos, source, int_only, print, _, trans) =>
046c829c075f added three_buffersN, print3;
wenzelm
parents: 17321
diff changeset
   495
  (name, pos, source, int_only, print, true, trans));
046c829c075f added three_buffersN, print3;
wenzelm
parents: 17321
diff changeset
   496
046c829c075f added three_buffersN, print3;
wenzelm
parents: 17321
diff changeset
   497
fun add_trans tr = map_transition (fn (name, pos, source, int_only, print, no_timing, trans) =>
046c829c075f added three_buffersN, print3;
wenzelm
parents: 17321
diff changeset
   498
  (name, pos, source, int_only, print, no_timing, trans @ [tr]));
046c829c075f added three_buffersN, print3;
wenzelm
parents: 17321
diff changeset
   499
16607
81e687c63e29 added print': print depending on print_mode;
wenzelm
parents: 16490
diff changeset
   500
fun print' mode = map_transition (fn (name, pos, source, int_only, print, no_timing, trans) =>
81e687c63e29 added print': print depending on print_mode;
wenzelm
parents: 16490
diff changeset
   501
  (name, pos, source, int_only, insert (op =) mode print, no_timing, trans));
81e687c63e29 added print': print depending on print_mode;
wenzelm
parents: 16490
diff changeset
   502
81e687c63e29 added print': print depending on print_mode;
wenzelm
parents: 16490
diff changeset
   503
val print = print' "";
5828
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   504
17363
046c829c075f added three_buffersN, print3;
wenzelm
parents: 17321
diff changeset
   505
val three_buffersN = "three_buffers";
046c829c075f added three_buffersN, print3;
wenzelm
parents: 17321
diff changeset
   506
val print3 = print' three_buffersN;
5828
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   507
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   508
21007
1bbb31aaf98d renamed enter_forward_proof to enter_proof_body;
wenzelm
parents: 20985
diff changeset
   509
(* basic transitions *)
5828
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   510
22056
858016d00449 fixed exit: proper type check of state;
wenzelm
parents: 22014
diff changeset
   511
fun init_theory f exit kill = add_trans (Init (f, (exit, kill)));
25441
4028958d19ff init_empty: check before change (avoids non-linear update);
wenzelm
parents: 25292
diff changeset
   512
fun init_empty check f = add_trans (InitEmpty (check, f));
6689
wenzelm
parents: 6664
diff changeset
   513
val exit = add_trans Exit;
21958
9dfd1ca4c0a0 refined notion of empty toplevel, admits undo of 'end';
wenzelm
parents: 21861
diff changeset
   514
val undo_exit = add_trans UndoExit;
6689
wenzelm
parents: 6664
diff changeset
   515
val kill = add_trans Kill;
20128
8f0e07d7cf92 keep/transaction: unified execution model (with debugging etc.);
wenzelm
parents: 19996
diff changeset
   516
val history = add_trans o History;
7612
ba11b5db431a added keep', theory';
wenzelm
parents: 7602
diff changeset
   517
val keep' = add_trans o Keep;
18592
451d622bb4a9 transactions now always see quasi-functional intermediate checkpoint;
wenzelm
parents: 18589
diff changeset
   518
fun map_current f = add_trans (Transaction (false, f));
451d622bb4a9 transactions now always see quasi-functional intermediate checkpoint;
wenzelm
parents: 18589
diff changeset
   519
fun app_current f = add_trans (Transaction (true, f));
5828
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   520
7612
ba11b5db431a added keep', theory';
wenzelm
parents: 7602
diff changeset
   521
fun keep f = add_trans (Keep (fn _ => f));
5828
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   522
fun imperative f = keep (fn _ => f ());
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   523
21007
1bbb31aaf98d renamed enter_forward_proof to enter_proof_body;
wenzelm
parents: 20985
diff changeset
   524
val unknown_theory = imperative (fn () => warning "Unknown theory context");
1bbb31aaf98d renamed enter_forward_proof to enter_proof_body;
wenzelm
parents: 20985
diff changeset
   525
val unknown_proof = imperative (fn () => warning "Unknown proof context");
1bbb31aaf98d renamed enter_forward_proof to enter_proof_body;
wenzelm
parents: 20985
diff changeset
   526
val unknown_context = imperative (fn () => warning "Unknown context");
15668
53c049a365cf improved exn_message;
wenzelm
parents: 15633
diff changeset
   527
21007
1bbb31aaf98d renamed enter_forward_proof to enter_proof_body;
wenzelm
parents: 20985
diff changeset
   528
1bbb31aaf98d renamed enter_forward_proof to enter_proof_body;
wenzelm
parents: 20985
diff changeset
   529
(* theory transitions *)
15668
53c049a365cf improved exn_message;
wenzelm
parents: 15633
diff changeset
   530
20963
a7fd8f05a2be added type global_theory -- theory or local_theory;
wenzelm
parents: 20928
diff changeset
   531
fun theory' f = app_current (fn int =>
a7fd8f05a2be added type global_theory -- theory or local_theory;
wenzelm
parents: 20928
diff changeset
   532
  (fn Theory (Context.Theory thy, _) => Theory (Context.Theory (f int thy), NONE)
a7fd8f05a2be added type global_theory -- theory or local_theory;
wenzelm
parents: 20928
diff changeset
   533
    | _ => raise UNDEF));
a7fd8f05a2be added type global_theory -- theory or local_theory;
wenzelm
parents: 20928
diff changeset
   534
a7fd8f05a2be added type global_theory -- theory or local_theory;
wenzelm
parents: 20928
diff changeset
   535
fun theory f = theory' (K f);
a7fd8f05a2be added type global_theory -- theory or local_theory;
wenzelm
parents: 20928
diff changeset
   536
21294
5cd48242ef17 simplified local theory wrappers;
wenzelm
parents: 21277
diff changeset
   537
fun begin_local_theory begin f = app_current (fn _ =>
20963
a7fd8f05a2be added type global_theory -- theory or local_theory;
wenzelm
parents: 20928
diff changeset
   538
  (fn Theory (Context.Theory thy, _) =>
a7fd8f05a2be added type global_theory -- theory or local_theory;
wenzelm
parents: 20928
diff changeset
   539
        let
20985
de13e2a23c8e exit_local_theory: pass interactive flag;
wenzelm
parents: 20963
diff changeset
   540
          val lthy = f thy;
21294
5cd48242ef17 simplified local theory wrappers;
wenzelm
parents: 21277
diff changeset
   541
          val gthy = if begin then Context.Proof lthy else Context.Theory (loc_exit lthy);
5cd48242ef17 simplified local theory wrappers;
wenzelm
parents: 21277
diff changeset
   542
        in Theory (gthy, SOME lthy) end
20963
a7fd8f05a2be added type global_theory -- theory or local_theory;
wenzelm
parents: 20928
diff changeset
   543
    | _ => raise UNDEF));
17076
c7effdf2e2e2 state: body context;
wenzelm
parents: 16815
diff changeset
   544
21294
5cd48242ef17 simplified local theory wrappers;
wenzelm
parents: 21277
diff changeset
   545
val end_local_theory = app_current (fn _ =>
5cd48242ef17 simplified local theory wrappers;
wenzelm
parents: 21277
diff changeset
   546
  (fn Theory (Context.Proof lthy, _) => Theory (Context.Theory (loc_exit lthy), SOME lthy)
21007
1bbb31aaf98d renamed enter_forward_proof to enter_proof_body;
wenzelm
parents: 20985
diff changeset
   547
    | _ => raise UNDEF));
1bbb31aaf98d renamed enter_forward_proof to enter_proof_body;
wenzelm
parents: 20985
diff changeset
   548
1bbb31aaf98d renamed enter_forward_proof to enter_proof_body;
wenzelm
parents: 20985
diff changeset
   549
local
1bbb31aaf98d renamed enter_forward_proof to enter_proof_body;
wenzelm
parents: 20985
diff changeset
   550
20963
a7fd8f05a2be added type global_theory -- theory or local_theory;
wenzelm
parents: 20928
diff changeset
   551
fun local_theory_presentation loc f g = app_current (fn int =>
21294
5cd48242ef17 simplified local theory wrappers;
wenzelm
parents: 21277
diff changeset
   552
  (fn Theory (gthy, _) =>
5cd48242ef17 simplified local theory wrappers;
wenzelm
parents: 21277
diff changeset
   553
        let
24780
47bb1e380d83 local_theory transactions: more careful treatment of context position;
wenzelm
parents: 24634
diff changeset
   554
          val pos = ContextPosition.get (Context.proof_of gthy);
21294
5cd48242ef17 simplified local theory wrappers;
wenzelm
parents: 21277
diff changeset
   555
          val finish = loc_finish loc gthy;
24795
6f5cb7885fd7 print_state_context: local theory context, not proof context;
wenzelm
parents: 24780
diff changeset
   556
          val lthy' = f (ContextPosition.put_ctxt pos (loc_begin loc gthy));
21294
5cd48242ef17 simplified local theory wrappers;
wenzelm
parents: 21277
diff changeset
   557
        in Theory (finish lthy', SOME lthy') end
20963
a7fd8f05a2be added type global_theory -- theory or local_theory;
wenzelm
parents: 20928
diff changeset
   558
    | _ => raise UNDEF) #> tap (g int));
15668
53c049a365cf improved exn_message;
wenzelm
parents: 15633
diff changeset
   559
21007
1bbb31aaf98d renamed enter_forward_proof to enter_proof_body;
wenzelm
parents: 20985
diff changeset
   560
in
1bbb31aaf98d renamed enter_forward_proof to enter_proof_body;
wenzelm
parents: 20985
diff changeset
   561
20963
a7fd8f05a2be added type global_theory -- theory or local_theory;
wenzelm
parents: 20928
diff changeset
   562
fun local_theory loc f = local_theory_presentation loc f (K I);
a7fd8f05a2be added type global_theory -- theory or local_theory;
wenzelm
parents: 20928
diff changeset
   563
fun present_local_theory loc g = local_theory_presentation loc I g;
18955
fa71f2ddd2e8 added local_theory, with optional locale xname;
wenzelm
parents: 18811
diff changeset
   564
21007
1bbb31aaf98d renamed enter_forward_proof to enter_proof_body;
wenzelm
parents: 20985
diff changeset
   565
end;
1bbb31aaf98d renamed enter_forward_proof to enter_proof_body;
wenzelm
parents: 20985
diff changeset
   566
1bbb31aaf98d renamed enter_forward_proof to enter_proof_body;
wenzelm
parents: 20985
diff changeset
   567
1bbb31aaf98d renamed enter_forward_proof to enter_proof_body;
wenzelm
parents: 20985
diff changeset
   568
(* proof transitions *)
1bbb31aaf98d renamed enter_forward_proof to enter_proof_body;
wenzelm
parents: 20985
diff changeset
   569
1bbb31aaf98d renamed enter_forward_proof to enter_proof_body;
wenzelm
parents: 20985
diff changeset
   570
fun end_proof f = map_current (fn int =>
24795
6f5cb7885fd7 print_state_context: local theory context, not proof context;
wenzelm
parents: 24780
diff changeset
   571
  (fn Proof (prf, (finish, _)) =>
21007
1bbb31aaf98d renamed enter_forward_proof to enter_proof_body;
wenzelm
parents: 20985
diff changeset
   572
        let val state = ProofHistory.current prf in
1bbb31aaf98d renamed enter_forward_proof to enter_proof_body;
wenzelm
parents: 20985
diff changeset
   573
          if can (Proof.assert_bottom true) state then
1bbb31aaf98d renamed enter_forward_proof to enter_proof_body;
wenzelm
parents: 20985
diff changeset
   574
            let
1bbb31aaf98d renamed enter_forward_proof to enter_proof_body;
wenzelm
parents: 20985
diff changeset
   575
              val ctxt' = f int state;
1bbb31aaf98d renamed enter_forward_proof to enter_proof_body;
wenzelm
parents: 20985
diff changeset
   576
              val gthy' = finish ctxt';
1bbb31aaf98d renamed enter_forward_proof to enter_proof_body;
wenzelm
parents: 20985
diff changeset
   577
            in Theory (gthy', SOME ctxt') end
1bbb31aaf98d renamed enter_forward_proof to enter_proof_body;
wenzelm
parents: 20985
diff changeset
   578
          else raise UNDEF
1bbb31aaf98d renamed enter_forward_proof to enter_proof_body;
wenzelm
parents: 20985
diff changeset
   579
        end
1bbb31aaf98d renamed enter_forward_proof to enter_proof_body;
wenzelm
parents: 20985
diff changeset
   580
    | SkipProof (h, (gthy, _)) =>
1bbb31aaf98d renamed enter_forward_proof to enter_proof_body;
wenzelm
parents: 20985
diff changeset
   581
        if History.current h = 0 then Theory (gthy, NONE) else raise UNDEF
1bbb31aaf98d renamed enter_forward_proof to enter_proof_body;
wenzelm
parents: 20985
diff changeset
   582
    | _ => raise UNDEF));
1bbb31aaf98d renamed enter_forward_proof to enter_proof_body;
wenzelm
parents: 20985
diff changeset
   583
21294
5cd48242ef17 simplified local theory wrappers;
wenzelm
parents: 21277
diff changeset
   584
local
5cd48242ef17 simplified local theory wrappers;
wenzelm
parents: 21277
diff changeset
   585
5cd48242ef17 simplified local theory wrappers;
wenzelm
parents: 21277
diff changeset
   586
fun begin_proof init finish = app_current (fn int =>
5cd48242ef17 simplified local theory wrappers;
wenzelm
parents: 21277
diff changeset
   587
  (fn Theory (gthy, _) =>
5cd48242ef17 simplified local theory wrappers;
wenzelm
parents: 21277
diff changeset
   588
    let
24453
86cf57ddf8f6 Added local_theory_to_proof'
berghofe
parents: 24295
diff changeset
   589
      val prf = init int gthy;
21294
5cd48242ef17 simplified local theory wrappers;
wenzelm
parents: 21277
diff changeset
   590
      val schematic = Proof.schematic_goal prf;
5cd48242ef17 simplified local theory wrappers;
wenzelm
parents: 21277
diff changeset
   591
    in
5cd48242ef17 simplified local theory wrappers;
wenzelm
parents: 21277
diff changeset
   592
      if ! skip_proofs andalso schematic then
5cd48242ef17 simplified local theory wrappers;
wenzelm
parents: 21277
diff changeset
   593
        warning "Cannot skip proof of schematic goal statement"
5cd48242ef17 simplified local theory wrappers;
wenzelm
parents: 21277
diff changeset
   594
      else ();
5cd48242ef17 simplified local theory wrappers;
wenzelm
parents: 21277
diff changeset
   595
      if ! skip_proofs andalso not schematic then
5cd48242ef17 simplified local theory wrappers;
wenzelm
parents: 21277
diff changeset
   596
        SkipProof
5cd48242ef17 simplified local theory wrappers;
wenzelm
parents: 21277
diff changeset
   597
          (History.init (undo_limit int) 0, (finish gthy (Proof.global_skip_proof int prf), gthy))
5cd48242ef17 simplified local theory wrappers;
wenzelm
parents: 21277
diff changeset
   598
      else Proof (ProofHistory.init (undo_limit int) prf, (finish gthy, gthy))
5cd48242ef17 simplified local theory wrappers;
wenzelm
parents: 21277
diff changeset
   599
    end
5cd48242ef17 simplified local theory wrappers;
wenzelm
parents: 21277
diff changeset
   600
  | _ => raise UNDEF));
5cd48242ef17 simplified local theory wrappers;
wenzelm
parents: 21277
diff changeset
   601
5cd48242ef17 simplified local theory wrappers;
wenzelm
parents: 21277
diff changeset
   602
in
5cd48242ef17 simplified local theory wrappers;
wenzelm
parents: 21277
diff changeset
   603
24780
47bb1e380d83 local_theory transactions: more careful treatment of context position;
wenzelm
parents: 24634
diff changeset
   604
fun local_theory_to_proof' loc f = begin_proof
47bb1e380d83 local_theory transactions: more careful treatment of context position;
wenzelm
parents: 24634
diff changeset
   605
  (fn int => fn gthy =>
24795
6f5cb7885fd7 print_state_context: local theory context, not proof context;
wenzelm
parents: 24780
diff changeset
   606
    f int (ContextPosition.put_ctxt (ContextPosition.get (Context.proof_of gthy))
6f5cb7885fd7 print_state_context: local theory context, not proof context;
wenzelm
parents: 24780
diff changeset
   607
      (loc_begin loc gthy)))
24780
47bb1e380d83 local_theory transactions: more careful treatment of context position;
wenzelm
parents: 24634
diff changeset
   608
  (loc_finish loc);
47bb1e380d83 local_theory transactions: more careful treatment of context position;
wenzelm
parents: 24634
diff changeset
   609
24453
86cf57ddf8f6 Added local_theory_to_proof'
berghofe
parents: 24295
diff changeset
   610
fun local_theory_to_proof loc f = local_theory_to_proof' loc (K f);
21294
5cd48242ef17 simplified local theory wrappers;
wenzelm
parents: 21277
diff changeset
   611
5cd48242ef17 simplified local theory wrappers;
wenzelm
parents: 21277
diff changeset
   612
fun theory_to_proof f = begin_proof
24780
47bb1e380d83 local_theory transactions: more careful treatment of context position;
wenzelm
parents: 24634
diff changeset
   613
  (K (fn Context.Theory thy => f thy | _ => raise UNDEF))
47bb1e380d83 local_theory transactions: more careful treatment of context position;
wenzelm
parents: 24634
diff changeset
   614
  (K (Context.Theory o ProofContext.theory_of));
21294
5cd48242ef17 simplified local theory wrappers;
wenzelm
parents: 21277
diff changeset
   615
5cd48242ef17 simplified local theory wrappers;
wenzelm
parents: 21277
diff changeset
   616
end;
5cd48242ef17 simplified local theory wrappers;
wenzelm
parents: 21277
diff changeset
   617
21007
1bbb31aaf98d renamed enter_forward_proof to enter_proof_body;
wenzelm
parents: 20985
diff changeset
   618
val forget_proof = map_current (fn _ =>
1bbb31aaf98d renamed enter_forward_proof to enter_proof_body;
wenzelm
parents: 20985
diff changeset
   619
  (fn Proof (_, (_, orig_gthy)) => Theory (orig_gthy, NONE)
1bbb31aaf98d renamed enter_forward_proof to enter_proof_body;
wenzelm
parents: 20985
diff changeset
   620
    | SkipProof (_, (_, orig_gthy)) => Theory (orig_gthy, NONE)
1bbb31aaf98d renamed enter_forward_proof to enter_proof_body;
wenzelm
parents: 20985
diff changeset
   621
    | _ => raise UNDEF));
1bbb31aaf98d renamed enter_forward_proof to enter_proof_body;
wenzelm
parents: 20985
diff changeset
   622
21177
e8228486aa03 removed checkpoint interface;
wenzelm
parents: 21007
diff changeset
   623
fun present_proof f = map_current (fn int =>
e8228486aa03 removed checkpoint interface;
wenzelm
parents: 21007
diff changeset
   624
  (fn Proof (prf, x) => Proof (ProofHistory.apply I prf, x)
e8228486aa03 removed checkpoint interface;
wenzelm
parents: 21007
diff changeset
   625
    | SkipProof (h, x) => SkipProof (History.apply I h, x)
e8228486aa03 removed checkpoint interface;
wenzelm
parents: 21007
diff changeset
   626
    | _ => raise UNDEF) #> tap (f int));
e8228486aa03 removed checkpoint interface;
wenzelm
parents: 21007
diff changeset
   627
17904
21c6894b5998 simplified interfaces proof/proof' etc.: perform ProofHistory.apply(s)/current internally;
wenzelm
parents: 17513
diff changeset
   628
fun proofs' f = map_current (fn int =>
21007
1bbb31aaf98d renamed enter_forward_proof to enter_proof_body;
wenzelm
parents: 20985
diff changeset
   629
  (fn Proof (prf, x) => Proof (ProofHistory.applys (f int) prf, x)
1bbb31aaf98d renamed enter_forward_proof to enter_proof_body;
wenzelm
parents: 20985
diff changeset
   630
    | SkipProof (h, x) => SkipProof (History.apply I h, x)
16815
13d20ed9086c added print_state_hook;
wenzelm
parents: 16729
diff changeset
   631
    | _ => raise UNDEF));
15668
53c049a365cf improved exn_message;
wenzelm
parents: 15633
diff changeset
   632
17904
21c6894b5998 simplified interfaces proof/proof' etc.: perform ProofHistory.apply(s)/current internally;
wenzelm
parents: 17513
diff changeset
   633
fun proof' f = proofs' (Seq.single oo f);
21c6894b5998 simplified interfaces proof/proof' etc.: perform ProofHistory.apply(s)/current internally;
wenzelm
parents: 17513
diff changeset
   634
val proofs = proofs' o K;
6689
wenzelm
parents: 6664
diff changeset
   635
val proof = proof' o K;
16815
13d20ed9086c added print_state_hook;
wenzelm
parents: 16729
diff changeset
   636
13d20ed9086c added print_state_hook;
wenzelm
parents: 16729
diff changeset
   637
fun actual_proof f = map_current (fn _ =>
21007
1bbb31aaf98d renamed enter_forward_proof to enter_proof_body;
wenzelm
parents: 20985
diff changeset
   638
  (fn Proof (prf, x) => Proof (f prf, x)
20963
a7fd8f05a2be added type global_theory -- theory or local_theory;
wenzelm
parents: 20928
diff changeset
   639
    | _ => raise UNDEF));
16815
13d20ed9086c added print_state_hook;
wenzelm
parents: 16729
diff changeset
   640
13d20ed9086c added print_state_hook;
wenzelm
parents: 16729
diff changeset
   641
fun skip_proof f = map_current (fn _ =>
21007
1bbb31aaf98d renamed enter_forward_proof to enter_proof_body;
wenzelm
parents: 20985
diff changeset
   642
  (fn SkipProof (h, x) => SkipProof (f h, x)
18563
wenzelm
parents: 17904
diff changeset
   643
    | _ => raise UNDEF));
wenzelm
parents: 17904
diff changeset
   644
16815
13d20ed9086c added print_state_hook;
wenzelm
parents: 16729
diff changeset
   645
fun skip_proof_to_theory p = map_current (fn _ =>
21007
1bbb31aaf98d renamed enter_forward_proof to enter_proof_body;
wenzelm
parents: 20985
diff changeset
   646
  (fn SkipProof (h, (gthy, _)) =>
1bbb31aaf98d renamed enter_forward_proof to enter_proof_body;
wenzelm
parents: 20985
diff changeset
   647
    if p (History.current h) then Theory (gthy, NONE)
17904
21c6894b5998 simplified interfaces proof/proof' etc.: perform ProofHistory.apply(s)/current internally;
wenzelm
parents: 17513
diff changeset
   648
    else raise UNDEF
21c6894b5998 simplified interfaces proof/proof' etc.: perform ProofHistory.apply(s)/current internally;
wenzelm
parents: 17513
diff changeset
   649
  | _ => raise UNDEF));
5828
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   650
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   651
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   652
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   653
(** toplevel transactions **)
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   654
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   655
(* apply transitions *)
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   656
6664
f679ddd1ddd8 cleaned comments;
wenzelm
parents: 6244
diff changeset
   657
local
f679ddd1ddd8 cleaned comments;
wenzelm
parents: 6244
diff changeset
   658
23363
9981199bf865 transaction: context_position (non-destructive only);
wenzelm
parents: 22588
diff changeset
   659
fun app int (tr as Transition {trans, pos, int_only, print, no_timing, ...}) state =
5828
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   660
  let
21962
279b129498b6 removed conditional combinator;
wenzelm
parents: 21958
diff changeset
   661
    val _ =
279b129498b6 removed conditional combinator;
wenzelm
parents: 21958
diff changeset
   662
      if not int andalso int_only then warning (command_msg "Interactive-only " tr)
279b129498b6 removed conditional combinator;
wenzelm
parents: 21958
diff changeset
   663
      else ();
16682
wenzelm
parents: 16658
diff changeset
   664
22588
4a859d13ef83 removed unused info channel;
wenzelm
parents: 22135
diff changeset
   665
    fun do_timing f x = (warning (command_msg "" tr); timeap f x);
16682
wenzelm
parents: 16658
diff changeset
   666
    fun do_profiling f x = profile (! profiling) f x;
wenzelm
parents: 16658
diff changeset
   667
6689
wenzelm
parents: 6664
diff changeset
   668
    val (result, opt_exn) =
23363
9981199bf865 transaction: context_position (non-destructive only);
wenzelm
parents: 22588
diff changeset
   669
       state |> (apply_trans int pos trans
23428
983cc1dfa6d0 oops -- fixed profiling;
wenzelm
parents: 23426
diff changeset
   670
        |> (if ! profiling > 0 andalso not no_timing then do_profiling else I)
16729
24c5c94aa967 debug: exception_trace;
wenzelm
parents: 16682
diff changeset
   671
        |> (if ! profiling > 0 orelse ! timing andalso not no_timing then do_timing else I));
21962
279b129498b6 removed conditional combinator;
wenzelm
parents: 21958
diff changeset
   672
    val _ =
24634
38db11874724 simplified PrintMode interfaces;
wenzelm
parents: 24453
diff changeset
   673
      if int andalso not (! quiet) andalso exists (member (op =) print) ("" :: print_mode_value ())
21962
279b129498b6 removed conditional combinator;
wenzelm
parents: 21958
diff changeset
   674
      then print_state false result else ();
15570
8d8c70b41bab Move towards standard functions.
skalberg
parents: 15549
diff changeset
   675
  in (result, Option.map (fn UNDEF => type_error tr state | exn => exn) opt_exn) end;
6664
f679ddd1ddd8 cleaned comments;
wenzelm
parents: 6244
diff changeset
   676
f679ddd1ddd8 cleaned comments;
wenzelm
parents: 6244
diff changeset
   677
in
5828
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   678
6689
wenzelm
parents: 6664
diff changeset
   679
fun apply int tr st =
6965
a766de752996 fixed interrupts (eliminated races);
wenzelm
parents: 6689
diff changeset
   680
  (case app int tr st of
15531
08c8dad8e399 Deleted Library.option type.
skalberg
parents: 15519
diff changeset
   681
    (_, SOME TERMINATE) => NONE
08c8dad8e399 Deleted Library.option type.
skalberg
parents: 15519
diff changeset
   682
  | (_, SOME RESTART) => SOME (toplevel, NONE)
08c8dad8e399 Deleted Library.option type.
skalberg
parents: 15519
diff changeset
   683
  | (state', SOME (EXCURSION_FAIL exn_info)) => SOME (state', SOME exn_info)
08c8dad8e399 Deleted Library.option type.
skalberg
parents: 15519
diff changeset
   684
  | (state', SOME exn) => SOME (state', SOME (exn, at_command tr))
08c8dad8e399 Deleted Library.option type.
skalberg
parents: 15519
diff changeset
   685
  | (state', NONE) => SOME (state', NONE));
6664
f679ddd1ddd8 cleaned comments;
wenzelm
parents: 6244
diff changeset
   686
f679ddd1ddd8 cleaned comments;
wenzelm
parents: 6244
diff changeset
   687
end;
5828
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   688
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   689
17076
c7effdf2e2e2 state: body context;
wenzelm
parents: 16815
diff changeset
   690
(* excursion: toplevel -- apply transformers/presentation -- toplevel *)
5828
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   691
6664
f679ddd1ddd8 cleaned comments;
wenzelm
parents: 6244
diff changeset
   692
local
f679ddd1ddd8 cleaned comments;
wenzelm
parents: 6244
diff changeset
   693
5828
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   694
fun excur [] x = x
17076
c7effdf2e2e2 state: body context;
wenzelm
parents: 16815
diff changeset
   695
  | excur ((tr, pr) :: trs) (st, res) =
17321
227f1f5c3959 added interact flag to control mode of excursions;
wenzelm
parents: 17320
diff changeset
   696
      (case apply (! interact) tr st of
15531
08c8dad8e399 Deleted Library.option type.
skalberg
parents: 15519
diff changeset
   697
        SOME (st', NONE) =>
18685
725660906cb3 sane ERROR vs. TOPLEVEL_ERROR handling;
wenzelm
parents: 18664
diff changeset
   698
          excur trs (st', pr st st' res handle exn =>
10324
498999fd7c37 tuned msg;
wenzelm
parents: 9512
diff changeset
   699
            raise EXCURSION_FAIL (exn, "Presentation failed\n" ^ at_command tr))
15531
08c8dad8e399 Deleted Library.option type.
skalberg
parents: 15519
diff changeset
   700
      | SOME (st', SOME exn_info) => raise EXCURSION_FAIL exn_info
08c8dad8e399 Deleted Library.option type.
skalberg
parents: 15519
diff changeset
   701
      | NONE => raise EXCURSION_FAIL (TERMINATE, at_command tr));
5828
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   702
17076
c7effdf2e2e2 state: body context;
wenzelm
parents: 16815
diff changeset
   703
fun no_pr _ _ _ = ();
c7effdf2e2e2 state: body context;
wenzelm
parents: 16815
diff changeset
   704
6664
f679ddd1ddd8 cleaned comments;
wenzelm
parents: 6244
diff changeset
   705
in
f679ddd1ddd8 cleaned comments;
wenzelm
parents: 6244
diff changeset
   706
17076
c7effdf2e2e2 state: body context;
wenzelm
parents: 16815
diff changeset
   707
fun present_excursion trs res =
21958
9dfd1ca4c0a0 refined notion of empty toplevel, admits undo of 'end';
wenzelm
parents: 21861
diff changeset
   708
  (case excur trs (toplevel, res) of
22056
858016d00449 fixed exit: proper type check of state;
wenzelm
parents: 22014
diff changeset
   709
    (state as Toplevel _, res') => (safe_exit state; res')
18685
725660906cb3 sane ERROR vs. TOPLEVEL_ERROR handling;
wenzelm
parents: 18664
diff changeset
   710
  | _ => error "Unfinished development at end of input")
9134
b38e94631f19 excursion_result;
wenzelm
parents: 9010
diff changeset
   711
  handle exn => error (exn_message exn);
b38e94631f19 excursion_result;
wenzelm
parents: 9010
diff changeset
   712
17076
c7effdf2e2e2 state: body context;
wenzelm
parents: 16815
diff changeset
   713
fun excursion trs = present_excursion (map (rpair no_pr) trs) ();
7062
e992884b256d Toplevel.excursion_error;
wenzelm
parents: 7022
diff changeset
   714
6664
f679ddd1ddd8 cleaned comments;
wenzelm
parents: 6244
diff changeset
   715
end;
f679ddd1ddd8 cleaned comments;
wenzelm
parents: 6244
diff changeset
   716
5828
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   717
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   718
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   719
(** interactive transformations **)
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   720
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   721
(* the global state reference *)
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   722
15531
08c8dad8e399 Deleted Library.option type.
skalberg
parents: 15519
diff changeset
   723
val global_state = ref (toplevel, NONE: (exn * string) option);
5828
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   724
15531
08c8dad8e399 Deleted Library.option type.
skalberg
parents: 15519
diff changeset
   725
fun set_state state = global_state := (state, NONE);
5828
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   726
fun get_state () = fst (! global_state);
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   727
fun exn () = snd (! global_state);
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   728
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   729
24295
af8dbc7a2305 global state transformation: non-critical, but also non-thread-safe;
wenzelm
parents: 24058
diff changeset
   730
(* apply transformers to global state --- NOT THREAD-SAFE! *)
5828
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   731
14985
fefcf6cd858a added >>> : transition list -> unit;
wenzelm
parents: 14981
diff changeset
   732
nonfix >> >>>;
5828
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   733
24295
af8dbc7a2305 global state transformation: non-critical, but also non-thread-safe;
wenzelm
parents: 24058
diff changeset
   734
fun >> tr =
5828
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   735
  (case apply true tr (get_state ()) of
15531
08c8dad8e399 Deleted Library.option type.
skalberg
parents: 15519
diff changeset
   736
    NONE => false
08c8dad8e399 Deleted Library.option type.
skalberg
parents: 15519
diff changeset
   737
  | SOME (state', exn_info) =>
5828
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   738
      (global_state := (state', exn_info);
22014
4b70cbd96007 removed Toplevel.print_exn hook -- existing error_msg_fn does the job;
wenzelm
parents: 21986
diff changeset
   739
        print_exn exn_info;
24295
af8dbc7a2305 global state transformation: non-critical, but also non-thread-safe;
wenzelm
parents: 24058
diff changeset
   740
        true));
5828
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   741
14985
fefcf6cd858a added >>> : transition list -> unit;
wenzelm
parents: 14981
diff changeset
   742
fun >>> [] = ()
fefcf6cd858a added >>> : transition list -> unit;
wenzelm
parents: 14981
diff changeset
   743
  | >>> (tr :: trs) = if >> tr then >>> trs else ();
fefcf6cd858a added >>> : transition list -> unit;
wenzelm
parents: 14981
diff changeset
   744
25441
4028958d19ff init_empty: check before change (avoids non-linear update);
wenzelm
parents: 25292
diff changeset
   745
fun init_state () = (>> (init_empty (K true) (K ()) empty); ());
21958
9dfd1ca4c0a0 refined notion of empty toplevel, admits undo of 'end';
wenzelm
parents: 21861
diff changeset
   746
9dfd1ca4c0a0 refined notion of empty toplevel, admits undo of 'end';
wenzelm
parents: 21861
diff changeset
   747
9dfd1ca4c0a0 refined notion of empty toplevel, admits undo of 'end';
wenzelm
parents: 21861
diff changeset
   748
(* the Isar source of transitions *)
9dfd1ca4c0a0 refined notion of empty toplevel, admits undo of 'end';
wenzelm
parents: 21861
diff changeset
   749
9dfd1ca4c0a0 refined notion of empty toplevel, admits undo of 'end';
wenzelm
parents: 21861
diff changeset
   750
type 'a isar =
9dfd1ca4c0a0 refined notion of empty toplevel, admits undo of 'end';
wenzelm
parents: 21861
diff changeset
   751
  (transition, (transition option,
9dfd1ca4c0a0 refined notion of empty toplevel, admits undo of 'end';
wenzelm
parents: 21861
diff changeset
   752
    (OuterLex.token, (OuterLex.token option, (OuterLex.token, (OuterLex.token,
9dfd1ca4c0a0 refined notion of empty toplevel, admits undo of 'end';
wenzelm
parents: 21861
diff changeset
   753
      Position.T * (Symbol.symbol, (string, 'a) Source.source) Source.source)
9dfd1ca4c0a0 refined notion of empty toplevel, admits undo of 'end';
wenzelm
parents: 21861
diff changeset
   754
          Source.source) Source.source) Source.source) Source.source) Source.source) Source.source;
9dfd1ca4c0a0 refined notion of empty toplevel, admits undo of 'end';
wenzelm
parents: 21861
diff changeset
   755
17513
0393718c2f1c get_interrupt: special handling of IO.io now in ML-Systems/smlnj-basis-compat.ML;
wenzelm
parents: 17500
diff changeset
   756
(*Spurious interrupts ahead!  Race condition?*)
0393718c2f1c get_interrupt: special handling of IO.io now in ML-Systems/smlnj-basis-compat.ML;
wenzelm
parents: 17500
diff changeset
   757
fun get_interrupt src = SOME (Source.get_single src) handle Interrupt => NONE;
7602
2c0f407f80ce avoid interrupts of read loop;
wenzelm
parents: 7501
diff changeset
   758
20928
74910a189f1d loop: disallow exit in secure mode;
wenzelm
parents: 20891
diff changeset
   759
fun warn_secure () =
74910a189f1d loop: disallow exit in secure mode;
wenzelm
parents: 20891
diff changeset
   760
  let val secure = Secure.is_secure ()
74910a189f1d loop: disallow exit in secure mode;
wenzelm
parents: 20891
diff changeset
   761
  in if secure then warning "Cannot exit to ML in secure mode" else (); secure end;
74910a189f1d loop: disallow exit in secure mode;
wenzelm
parents: 20891
diff changeset
   762
5828
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   763
fun raw_loop src =
23720
d0d583c7a41f Markup.enclose;
wenzelm
parents: 23701
diff changeset
   764
  let val prompt = Output.escape (Markup.enclose Markup.prompt Source.default_prompt) in
23640
baec2e674461 toplevel prompt/print_state: proper markup, removed hooks;
wenzelm
parents: 23619
diff changeset
   765
    (case get_interrupt (Source.set_prompt prompt src) of
baec2e674461 toplevel prompt/print_state: proper markup, removed hooks;
wenzelm
parents: 23619
diff changeset
   766
      NONE => (writeln "\nInterrupt."; raw_loop src)
baec2e674461 toplevel prompt/print_state: proper markup, removed hooks;
wenzelm
parents: 23619
diff changeset
   767
    | SOME NONE => if warn_secure () then quit () else ()
baec2e674461 toplevel prompt/print_state: proper markup, removed hooks;
wenzelm
parents: 23619
diff changeset
   768
    | SOME (SOME (tr, src')) =>
baec2e674461 toplevel prompt/print_state: proper markup, removed hooks;
wenzelm
parents: 23619
diff changeset
   769
        if >> tr orelse warn_secure () then raw_loop src'
baec2e674461 toplevel prompt/print_state: proper markup, removed hooks;
wenzelm
parents: 23619
diff changeset
   770
        else ())
baec2e674461 toplevel prompt/print_state: proper markup, removed hooks;
wenzelm
parents: 23619
diff changeset
   771
  end;
5828
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   772
12987
b6db96775e52 use ignore_interrupt, raise_interrupt;
wenzelm
parents: 12881
diff changeset
   773
fun loop src = ignore_interrupt raw_loop src;
5828
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   774
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   775
end;