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 node
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  val theory_node: node -> theory option
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  val proof_node: node -> ProofHistory.T option
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  val cases_node: (theory -> 'a) -> (Proof.state -> 'a) -> node -> 'a
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  val body_context_node: node option -> xstring option -> Proof.context
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  type state
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  val toplevel: 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 assert: bool -> unit
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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: (theory -> 'a) -> (Proof.state -> 'a) -> state -> 'a
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  val context_of: state -> Context.generic
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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_forward_proof: state -> Proof.state
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  val prompt_state_default: state -> string
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  val prompt_state_fn: (state -> string) ref
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  val print_state_context: state -> unit
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  val print_state_default: bool -> state -> unit
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  val print_state_hook: (bool -> state -> unit) -> unit
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  val print_state_fn: (bool -> state -> unit) ref
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  val print_state: bool -> state -> unit
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  val pretty_state: bool -> state -> Pretty.T list
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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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  val exn_message: exn -> string
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  val program: (unit -> 'a) -> 'a
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  val checkpoint: state -> state
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  val copy: state -> state
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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 reset: transition -> transition
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  val init: (bool -> node) -> (node -> unit) -> (node -> unit) -> transition -> transition
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  val 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 init_theory: (bool -> theory) -> (theory -> unit) -> (theory -> unit)
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    -> 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 theory_context: (theory -> Proof.context * theory) -> transition -> transition
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  val local_theory: xstring option -> (local_theory -> local_theory) ->
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    transition -> transition
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  val theory_to_proof: (theory -> Proof.state) -> transition -> transition
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  val proof: (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': (bool -> Proof.state -> Proof.state) -> transition -> transition
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  val proofs': (bool -> Proof.state -> Proof.state Seq.seq) -> 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 proof_to_theory: (Proof.state -> theory) -> transition -> transition
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  val proof_to_theory': (bool -> Proof.state -> theory) -> transition -> transition
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  val proof_to_theory_context: (bool -> Proof.state -> Proof.context * theory)
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    -> transition -> transition
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  val skip_proof_to_theory: (int -> bool) -> transition -> transition
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  val forget_proof: transition -> transition
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  val present_local_theory: xstring option -> (bool -> node -> unit) -> transition -> transition
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  val present_proof: (bool -> node -> unit) -> 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 apply: bool -> transition -> state -> (state * (exn * string) option) option
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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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  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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(* datatype state *)
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datatype node =
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  Theory of theory * Proof.context option |        (*theory with optional body context*)
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  Proof of ProofHistory.T * theory |               (*history of proof states, original theory*)
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  SkipProof of (int History.T * theory) * theory;
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    (*history of proof depths, resulting theory, original theory*)
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val theory_node = fn Theory (thy, _) => SOME thy | _ => NONE;
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val proof_node = fn Proof (prf, _) => SOME prf | _ => NONE;
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fun cases_node f _ (Theory (thy, _)) = f thy
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  | cases_node _ g (Proof (prf, _)) = g (ProofHistory.current prf)
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  | cases_node f _ (SkipProof ((_, thy), _)) = f thy;
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fun body_context_node (SOME (Theory (_, SOME ctxt))) NONE = ctxt
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  | body_context_node (SOME node) loc =
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      node |> cases_node (LocalTheory.init loc)
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       (if is_some loc then LocalTheory.init loc o Proof.theory_of
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        else Proof.context_of)
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  | body_context_node NONE _ = raise UNDEF;
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datatype state = State of (node History.T * ((node -> unit) * (node -> unit))) option;
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val toplevel = State NONE;
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fun is_toplevel (State NONE) = true
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  | is_toplevel _ = false;
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fun level (State NONE) = 0
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  | level (State (SOME (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 (State NONE) = "at top level"
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  | str_of_state (State (SOME (node, _))) =
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      (case History.current node of
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        Theory _ => "in 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 assert true = ()
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  | assert false = raise UNDEF;
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fun node_history_of (State NONE) = raise UNDEF
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  | node_history_of (State (SOME (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.Theory (Context.Proof o Proof.context_of);
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val theory_of = node_case I 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_forward_proof = node_case (Proof.init o ProofContext.init) Proof.enter_forward;
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(* prompt state *)
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fun prompt_state_default (State _) = Source.default_prompt;
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val prompt_state_fn = ref prompt_state_default;
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fun prompt_state state = ! prompt_state_fn state;
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(* print state *)
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fun pretty_context thy = [Pretty.block
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  [Pretty.str "theory", Pretty.brk 1, Pretty.str (Context.theory_name thy),
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    Pretty.str " =", Pretty.brk 1, ThyInfo.pretty_theory thy]];
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fun pretty_state_context state =
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  (case try theory_of state of NONE => []
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  | SOME thy => pretty_context thy);
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fun pretty_node prf_only (Theory (thy, _)) = if prf_only then [] else pretty_context thy
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  | pretty_node _ (Proof (prf, _)) =
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      Proof.pretty_state (ProofHistory.position prf) (ProofHistory.current prf)
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  | pretty_node _ (SkipProof ((h, _), _)) =
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      [Pretty.str ("skipped proof: depth " ^ string_of_int (History.current h))];
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fun pretty_state prf_only state =
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  let val ref (begin_state, end_state, _) = Display.current_goals_markers in
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    (case try node_of state of NONE => []
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    | SOME node =>
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        (if begin_state = "" then [] else [Pretty.str begin_state]) @
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        pretty_node prf_only node @
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        (if end_state = "" then [] else [Pretty.str end_state]))
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  end;
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val print_state_context = Pretty.writelns o pretty_state_context;
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fun print_state_default prf_only state = Pretty.writelns (pretty_state prf_only state);
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val print_state_hooks = ref ([]: (bool -> state -> unit) list);
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fun print_state_hook f = change print_state_hooks (cons f);
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val print_state_fn = ref print_state_default;
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fun print_state prf_only state =
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 (List.app (fn f => (try (fn () => f prf_only state) (); ())) (! print_state_hooks);
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  ! print_state_fn prf_only state);
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(** toplevel transitions **)
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val quiet = ref false;
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val debug = ref false;
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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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(* print exceptions *)
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local
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fun with_context f xs =
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  (case Context.get_context () of NONE => []
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  | SOME thy => map (f thy) 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 _ Output.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 (EXCEPTION (exn, msg)) = cat_lines [exn_msg detailed exn, 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 detailed (MetaSimplifier.SIMPROC_FAIL (name, exn)) =
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      fail_msg detailed "simproc" ((name, Position.none), exn)
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  | exn_msg detailed (Attrib.ATTRIB_FAIL info) = fail_msg detailed "attribute" info
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  | exn_msg detailed (Method.METHOD_FAIL info) = fail_msg detailed "method" info
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  | exn_msg detailed (Antiquote.ANTIQUOTE_FAIL info) = fail_msg detailed "antiquotation" info
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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 Sign.string_of_typ Ts @ with_context Sign.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)) = raised "TERM" (msg :: with_context Sign.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 :: map Display.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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and fail_msg detailed kind ((name, pos), exn) =
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  "Error in " ^ kind ^ " " ^ quote name ^ Position.str_of pos ^ ":\n" ^ exn_msg detailed 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
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    setmp Library.do_transform_failure false
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      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 x
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   320
  in raise_interrupt (fn () => y := f x) (); ! y end;
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in
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   323
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   324
fun controlled_execution f =
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   325
  f
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   326
  |> debugging
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   327
  |> interruptible
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   328
  |> setmp Output.do_toplevel_errors false;
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   329
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fun program f =
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   331
  Output.ML_errors (fn () => debugging f () handle exn => error (exn_message exn)) ();
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   333
end;
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1feeadaad6a9 The Isabelle/Isar toplevel.
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16815
13d20ed9086c added print_state_hook;
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   336
(* node transactions and recovery from stale theories *)
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   338
(*NB: proof commands should be non-destructive!*)
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   339
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   340
local
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   341
16452
71f3e0041f14 Context.DATA_FAIL;
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   342
fun is_stale state = Context.is_stale (theory_of state) handle UNDEF => false;
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   343
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val stale_theory = ERROR "Stale theory encountered after succesful execution!";
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   345
19101
d9b6375a21a4 checkpoint/copy_node: reset body context;
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   346
fun checkpoint_node (Theory (thy, _)) = Theory (Theory.checkpoint thy, NONE)
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451d622bb4a9 transactions now always see quasi-functional intermediate checkpoint;
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  | checkpoint_node node = node;
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   348
19101
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   349
fun copy_node (Theory (thy, _)) = Theory (Theory.copy thy, NONE)
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451d622bb4a9 transactions now always see quasi-functional intermediate checkpoint;
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   350
  | copy_node node = node;
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   351
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08c8dad8e399 Deleted Library.option type.
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   352
fun return (result, NONE) = result
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   353
  | return (result, SOME exn) = raise FAILURE (result, exn);
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abf9d5e2fb6e removed BREAK, ROLLBACK;
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   354
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   355
in
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   356
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   357
fun transaction hist f (node, term) =
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   358
  let
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   359
    val cont_node = History.map checkpoint_node node;
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   360
    val back_node = History.map copy_node cont_node;
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   361
    fun state nd = State (SOME (nd, term));
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   362
    fun normal_state nd = (state nd, NONE);
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   363
    fun error_state nd exn = (state nd, SOME exn);
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   364
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   365
    val (result, err) =
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   366
      cont_node
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   367
      |> (f
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   368
          |> (if hist then History.apply_copy copy_node else History.map)
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   369
          |> controlled_execution)
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   370
      |> normal_state
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   371
      handle exn => error_state cont_node exn;
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   372
  in
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   373
    if is_stale result
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   374
    then return (error_state back_node (the_default stale_theory err))
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   375
    else return (result, err)
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   376
  end;
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   377
18589
c27c9fa9e83d hide type datatype node;
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   378
fun mapping f (State (SOME (node, term))) = State (SOME (History.map f node, term))
c27c9fa9e83d hide type datatype node;
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   379
  | mapping _ state = state;
c27c9fa9e83d hide type datatype node;
wenzelm
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   380
18592
451d622bb4a9 transactions now always see quasi-functional intermediate checkpoint;
wenzelm
parents: 18589
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   381
val checkpoint = mapping checkpoint_node;
451d622bb4a9 transactions now always see quasi-functional intermediate checkpoint;
wenzelm
parents: 18589
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   382
val copy = mapping copy_node;
18589
c27c9fa9e83d hide type datatype node;
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   383
6689
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   384
end;
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   385
wenzelm
parents: 6664
diff changeset
   386
wenzelm
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   387
(* primitive transitions *)
wenzelm
parents: 6664
diff changeset
   388
18563
wenzelm
parents: 17904
diff changeset
   389
(*Note: Recovery from stale theories is provided only for theory-level
18589
c27c9fa9e83d hide type datatype node;
wenzelm
parents: 18564
diff changeset
   390
  operations via Transaction.  Other node or state operations should
c27c9fa9e83d hide type datatype node;
wenzelm
parents: 18564
diff changeset
   391
  not touch theories at all.  Interrupts are enabled only for Keep and
c27c9fa9e83d hide type datatype node;
wenzelm
parents: 18564
diff changeset
   392
  Transaction.*)
5828
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
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   393
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
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   394
datatype trans =
18563
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parents: 17904
diff changeset
   395
  Reset |                                               (*empty toplevel*)
8465
df6549f5a01f eliminated toplevel stack;
wenzelm
parents: 7732
diff changeset
   396
  Init of (bool -> node) * ((node -> unit) * (node -> unit)) |
18563
wenzelm
parents: 17904
diff changeset
   397
                                                        (*init node; with exit/kill operation*)
wenzelm
parents: 17904
diff changeset
   398
  Exit |                                                (*conclude node*)
wenzelm
parents: 17904
diff changeset
   399
  Kill |                                                (*abort node*)
20128
8f0e07d7cf92 keep/transaction: unified execution model (with debugging etc.);
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parents: 19996
diff changeset
   400
  History of node History.T -> node History.T |         (*history operation (undo etc.)*)
18563
wenzelm
parents: 17904
diff changeset
   401
  Keep of bool -> state -> unit |                       (*peek at state*)
18592
451d622bb4a9 transactions now always see quasi-functional intermediate checkpoint;
wenzelm
parents: 18589
diff changeset
   402
  Transaction of bool * (bool -> node -> node);         (*node transaction*)
6689
wenzelm
parents: 6664
diff changeset
   403
15531
08c8dad8e399 Deleted Library.option type.
skalberg
parents: 15519
diff changeset
   404
fun undo_limit int = if int then NONE else SOME 0;
6689
wenzelm
parents: 6664
diff changeset
   405
wenzelm
parents: 6664
diff changeset
   406
local
5828
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   407
6689
wenzelm
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diff changeset
   408
fun apply_tr _ Reset _ = toplevel
15531
08c8dad8e399 Deleted Library.option type.
skalberg
parents: 15519
diff changeset
   409
  | apply_tr int (Init (f, term)) (State NONE) =
08c8dad8e399 Deleted Library.option type.
skalberg
parents: 15519
diff changeset
   410
      State (SOME (History.init (undo_limit int) (f int), term))
08c8dad8e399 Deleted Library.option type.
skalberg
parents: 15519
diff changeset
   411
  | apply_tr _ (Init _ ) (State (SOME _)) = raise UNDEF
08c8dad8e399 Deleted Library.option type.
skalberg
parents: 15519
diff changeset
   412
  | apply_tr _ Exit (State NONE) = raise UNDEF
08c8dad8e399 Deleted Library.option type.
skalberg
parents: 15519
diff changeset
   413
  | apply_tr _ Exit (State (SOME (node, (exit, _)))) =
08c8dad8e399 Deleted Library.option type.
skalberg
parents: 15519
diff changeset
   414
      (exit (History.current node); State NONE)
08c8dad8e399 Deleted Library.option type.
skalberg
parents: 15519
diff changeset
   415
  | apply_tr _ Kill (State NONE) = raise UNDEF
08c8dad8e399 Deleted Library.option type.
skalberg
parents: 15519
diff changeset
   416
  | apply_tr _ Kill (State (SOME (node, (_, kill)))) =
08c8dad8e399 Deleted Library.option type.
skalberg
parents: 15519
diff changeset
   417
      (kill (History.current node); State NONE)
08c8dad8e399 Deleted Library.option type.
skalberg
parents: 15519
diff changeset
   418
  | apply_tr _ (History _) (State NONE) = raise UNDEF
08c8dad8e399 Deleted Library.option type.
skalberg
parents: 15519
diff changeset
   419
  | apply_tr _ (History f) (State (SOME (node, term))) = State (SOME (f node, term))
20128
8f0e07d7cf92 keep/transaction: unified execution model (with debugging etc.);
wenzelm
parents: 19996
diff changeset
   420
  | apply_tr int (Keep f) state =
8f0e07d7cf92 keep/transaction: unified execution model (with debugging etc.);
wenzelm
parents: 19996
diff changeset
   421
      controlled_execution (fn x => tap (f int) x) state
8f0e07d7cf92 keep/transaction: unified execution model (with debugging etc.);
wenzelm
parents: 19996
diff changeset
   422
  | apply_tr _ (Transaction _) (State NONE) = raise UNDEF
8f0e07d7cf92 keep/transaction: unified execution model (with debugging etc.);
wenzelm
parents: 19996
diff changeset
   423
  | apply_tr int (Transaction (hist, f)) (State (SOME state)) =
8f0e07d7cf92 keep/transaction: unified execution model (with debugging etc.);
wenzelm
parents: 19996
diff changeset
   424
      transaction hist (fn x => f int x) state;
5828
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   425
6689
wenzelm
parents: 6664
diff changeset
   426
fun apply_union _ [] state = raise FAILURE (state, UNDEF)
wenzelm
parents: 6664
diff changeset
   427
  | apply_union int (tr :: trs) state =
18685
725660906cb3 sane ERROR vs. TOPLEVEL_ERROR handling;
wenzelm
parents: 18664
diff changeset
   428
      apply_tr int tr state
6689
wenzelm
parents: 6664
diff changeset
   429
        handle UNDEF => apply_union int trs state
wenzelm
parents: 6664
diff changeset
   430
          | FAILURE (alt_state, UNDEF) => apply_union int trs alt_state
wenzelm
parents: 6664
diff changeset
   431
          | exn as FAILURE _ => raise exn
wenzelm
parents: 6664
diff changeset
   432
          | exn => raise FAILURE (state, exn);
wenzelm
parents: 6664
diff changeset
   433
wenzelm
parents: 6664
diff changeset
   434
in
wenzelm
parents: 6664
diff changeset
   435
15531
08c8dad8e399 Deleted Library.option type.
skalberg
parents: 15519
diff changeset
   436
fun apply_trans int trs state = (apply_union int trs state, NONE)
08c8dad8e399 Deleted Library.option type.
skalberg
parents: 15519
diff changeset
   437
  handle FAILURE (alt_state, exn) => (alt_state, SOME exn) | exn => (state, SOME exn);
6689
wenzelm
parents: 6664
diff changeset
   438
wenzelm
parents: 6664
diff changeset
   439
end;
5828
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   440
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   441
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   442
(* datatype transition *)
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   443
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   444
datatype transition = Transition of
16815
13d20ed9086c added print_state_hook;
wenzelm
parents: 16729
diff changeset
   445
 {name: string,                        (*command name*)
13d20ed9086c added print_state_hook;
wenzelm
parents: 16729
diff changeset
   446
  pos: Position.T,                     (*source position*)
13d20ed9086c added print_state_hook;
wenzelm
parents: 16729
diff changeset
   447
  source: OuterLex.token list option,  (*source text*)
13d20ed9086c added print_state_hook;
wenzelm
parents: 16729
diff changeset
   448
  int_only: bool,                      (*interactive-only*)
13d20ed9086c added print_state_hook;
wenzelm
parents: 16729
diff changeset
   449
  print: string list,                  (*print modes (union)*)
13d20ed9086c added print_state_hook;
wenzelm
parents: 16729
diff changeset
   450
  no_timing: bool,                     (*suppress timing*)
13d20ed9086c added print_state_hook;
wenzelm
parents: 16729
diff changeset
   451
  trans: trans list};                  (*primitive transitions (union)*)
5828
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   452
14923
8a32071c3c13 added name_of, source_of, source;
wenzelm
parents: 14825
diff changeset
   453
fun make_transition (name, pos, source, int_only, print, no_timing, trans) =
8a32071c3c13 added name_of, source_of, source;
wenzelm
parents: 14825
diff changeset
   454
  Transition {name = name, pos = pos, source = source,
8a32071c3c13 added name_of, source_of, source;
wenzelm
parents: 14825
diff changeset
   455
    int_only = int_only, print = print, no_timing = no_timing, trans = trans};
5828
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   456
14923
8a32071c3c13 added name_of, source_of, source;
wenzelm
parents: 14825
diff changeset
   457
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
   458
  make_transition (f (name, pos, source, int_only, print, no_timing, trans));
5828
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   459
16607
81e687c63e29 added print': print depending on print_mode;
wenzelm
parents: 16490
diff changeset
   460
val empty = make_transition ("<unknown>", Position.none, NONE, false, [], false, []);
14923
8a32071c3c13 added name_of, source_of, source;
wenzelm
parents: 14825
diff changeset
   461
8a32071c3c13 added name_of, source_of, source;
wenzelm
parents: 14825
diff changeset
   462
fun name_of (Transition {name, ...}) = name;
8a32071c3c13 added name_of, source_of, source;
wenzelm
parents: 14825
diff changeset
   463
fun source_of (Transition {source, ...}) = source;
5828
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   464
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   465
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   466
(* diagnostics *)
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   467
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   468
fun str_of_transition (Transition {name, pos, ...}) = quote name ^ Position.str_of pos;
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   469
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   470
fun command_msg msg tr = msg ^ "command " ^ str_of_transition tr;
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   471
fun at_command tr = command_msg "At " tr ^ ".";
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   472
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   473
fun type_error tr state =
18685
725660906cb3 sane ERROR vs. TOPLEVEL_ERROR handling;
wenzelm
parents: 18664
diff changeset
   474
  ERROR (command_msg "Illegal application of " tr ^ " " ^ str_of_state state);
5828
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   475
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   476
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   477
(* modify transitions *)
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   478
14923
8a32071c3c13 added name_of, source_of, source;
wenzelm
parents: 14825
diff changeset
   479
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
   480
  (nm, pos, source, int_only, print, no_timing, trans));
5828
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 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
   483
  (name, pos, source, int_only, print, no_timing, trans));
9010
ce78dc5e1a73 Toplevel.no_timing;
wenzelm
parents: 8999
diff changeset
   484
14923
8a32071c3c13 added name_of, source_of, source;
wenzelm
parents: 14825
diff changeset
   485
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
   486
  (name, pos, SOME src, int_only, print, no_timing, trans));
5828
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   487
14923
8a32071c3c13 added name_of, source_of, source;
wenzelm
parents: 14825
diff changeset
   488
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
   489
  (name, pos, source, int_only, print, no_timing, trans));
8a32071c3c13 added name_of, source_of, source;
wenzelm
parents: 14825
diff changeset
   490
17363
046c829c075f added three_buffersN, print3;
wenzelm
parents: 17321
diff changeset
   491
val no_timing = map_transition (fn (name, pos, source, int_only, print, _, trans) =>
046c829c075f added three_buffersN, print3;
wenzelm
parents: 17321
diff changeset
   492
  (name, pos, source, int_only, print, true, trans));
046c829c075f added three_buffersN, print3;
wenzelm
parents: 17321
diff changeset
   493
046c829c075f added three_buffersN, print3;
wenzelm
parents: 17321
diff changeset
   494
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
   495
  (name, pos, source, int_only, print, no_timing, trans @ [tr]));
046c829c075f added three_buffersN, print3;
wenzelm
parents: 17321
diff changeset
   496
16607
81e687c63e29 added print': print depending on print_mode;
wenzelm
parents: 16490
diff changeset
   497
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
   498
  (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
   499
81e687c63e29 added print': print depending on print_mode;
wenzelm
parents: 16490
diff changeset
   500
val print = print' "";
5828
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   501
17363
046c829c075f added three_buffersN, print3;
wenzelm
parents: 17321
diff changeset
   502
val three_buffersN = "three_buffers";
046c829c075f added three_buffersN, print3;
wenzelm
parents: 17321
diff changeset
   503
val print3 = print' three_buffersN;
5828
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   504
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   505
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   506
(* build transitions *)
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   507
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   508
val reset = add_trans Reset;
6689
wenzelm
parents: 6664
diff changeset
   509
fun init f exit kill = add_trans (Init (f, (exit, kill)));
wenzelm
parents: 6664
diff changeset
   510
val exit = add_trans Exit;
wenzelm
parents: 6664
diff changeset
   511
val kill = add_trans Kill;
20128
8f0e07d7cf92 keep/transaction: unified execution model (with debugging etc.);
wenzelm
parents: 19996
diff changeset
   512
val history = add_trans o History;
7612
ba11b5db431a added keep', theory';
wenzelm
parents: 7602
diff changeset
   513
val keep' = add_trans o Keep;
18592
451d622bb4a9 transactions now always see quasi-functional intermediate checkpoint;
wenzelm
parents: 18589
diff changeset
   514
fun map_current f = add_trans (Transaction (false, f));
451d622bb4a9 transactions now always see quasi-functional intermediate checkpoint;
wenzelm
parents: 18589
diff changeset
   515
fun app_current f = add_trans (Transaction (true, f));
5828
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   516
7612
ba11b5db431a added keep', theory';
wenzelm
parents: 7602
diff changeset
   517
fun keep f = add_trans (Keep (fn _ => f));
5828
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   518
fun imperative f = keep (fn _ => f ());
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   519
6689
wenzelm
parents: 6664
diff changeset
   520
fun init_theory f exit kill =
17076
c7effdf2e2e2 state: body context;
wenzelm
parents: 16815
diff changeset
   521
  init (fn int => Theory (f int, NONE))
c7effdf2e2e2 state: body context;
wenzelm
parents: 16815
diff changeset
   522
    (fn Theory (thy, _) => exit thy | _ => raise UNDEF)
c7effdf2e2e2 state: body context;
wenzelm
parents: 16815
diff changeset
   523
    (fn Theory (thy, _) => kill thy | _ => raise UNDEF);
5828
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   524
15668
53c049a365cf improved exn_message;
wenzelm
parents: 15633
diff changeset
   525
53c049a365cf improved exn_message;
wenzelm
parents: 15633
diff changeset
   526
(* typed transitions *)
53c049a365cf improved exn_message;
wenzelm
parents: 15633
diff changeset
   527
18592
451d622bb4a9 transactions now always see quasi-functional intermediate checkpoint;
wenzelm
parents: 18589
diff changeset
   528
fun theory f = app_current
18563
wenzelm
parents: 17904
diff changeset
   529
  (K (fn Theory (thy, _) => Theory (f thy, NONE) | _ => raise UNDEF));
wenzelm
parents: 17904
diff changeset
   530
18592
451d622bb4a9 transactions now always see quasi-functional intermediate checkpoint;
wenzelm
parents: 18589
diff changeset
   531
fun theory' f = app_current (fn int =>
17076
c7effdf2e2e2 state: body context;
wenzelm
parents: 16815
diff changeset
   532
  (fn Theory (thy, _) => Theory (f int thy, NONE) | _ => raise UNDEF));
c7effdf2e2e2 state: body context;
wenzelm
parents: 16815
diff changeset
   533
18592
451d622bb4a9 transactions now always see quasi-functional intermediate checkpoint;
wenzelm
parents: 18589
diff changeset
   534
fun theory_context f = app_current
18811
15f9fe3064ef swapped theory_context;
wenzelm
parents: 18718
diff changeset
   535
  (K (fn Theory (thy, _) => Theory (swap (apfst SOME (f thy))) | _ => raise UNDEF));
15668
53c049a365cf improved exn_message;
wenzelm
parents: 15633
diff changeset
   536
19063
049c010c8fb7 added cases_node;
wenzelm
parents: 18955
diff changeset
   537
fun local_theory loc f = theory_context (LocalTheory.mapping loc f);
18955
fa71f2ddd2e8 added local_theory, with optional locale xname;
wenzelm
parents: 18811
diff changeset
   538
18592
451d622bb4a9 transactions now always see quasi-functional intermediate checkpoint;
wenzelm
parents: 18589
diff changeset
   539
fun theory_to_proof f = app_current (fn int =>
17076
c7effdf2e2e2 state: body context;
wenzelm
parents: 16815
diff changeset
   540
  (fn Theory (thy, _) =>
19996
a4332e71c1de skip_proofs: do not skip proofs of schematic goals (warning);
wenzelm
parents: 19841
diff changeset
   541
    let
a4332e71c1de skip_proofs: do not skip proofs of schematic goals (warning);
wenzelm
parents: 19841
diff changeset
   542
      val prf = f thy;
a4332e71c1de skip_proofs: do not skip proofs of schematic goals (warning);
wenzelm
parents: 19841
diff changeset
   543
      val schematic = Proof.schematic_goal prf;
a4332e71c1de skip_proofs: do not skip proofs of schematic goals (warning);
wenzelm
parents: 19841
diff changeset
   544
    in
a4332e71c1de skip_proofs: do not skip proofs of schematic goals (warning);
wenzelm
parents: 19841
diff changeset
   545
      if ! skip_proofs andalso schematic then
a4332e71c1de skip_proofs: do not skip proofs of schematic goals (warning);
wenzelm
parents: 19841
diff changeset
   546
        warning "Cannot skip proof of schematic goal statement"
a4332e71c1de skip_proofs: do not skip proofs of schematic goals (warning);
wenzelm
parents: 19841
diff changeset
   547
      else ();
a4332e71c1de skip_proofs: do not skip proofs of schematic goals (warning);
wenzelm
parents: 19841
diff changeset
   548
      if ! skip_proofs andalso not schematic then
a4332e71c1de skip_proofs: do not skip proofs of schematic goals (warning);
wenzelm
parents: 19841
diff changeset
   549
        SkipProof ((History.init (undo_limit int) 0, #2 (Proof.global_skip_proof int prf)), thy)
a4332e71c1de skip_proofs: do not skip proofs of schematic goals (warning);
wenzelm
parents: 19841
diff changeset
   550
      else Proof (ProofHistory.init (undo_limit int) prf, thy)
a4332e71c1de skip_proofs: do not skip proofs of schematic goals (warning);
wenzelm
parents: 19841
diff changeset
   551
    end
18592
451d622bb4a9 transactions now always see quasi-functional intermediate checkpoint;
wenzelm
parents: 18589
diff changeset
   552
  | _ => raise UNDEF));
18563
wenzelm
parents: 17904
diff changeset
   553
17904
21c6894b5998 simplified interfaces proof/proof' etc.: perform ProofHistory.apply(s)/current internally;
wenzelm
parents: 17513
diff changeset
   554
fun proofs' f = map_current (fn int =>
18563
wenzelm
parents: 17904
diff changeset
   555
  (fn Proof (prf, orig_thy) => Proof (ProofHistory.applys (f int) prf, orig_thy)
wenzelm
parents: 17904
diff changeset
   556
    | SkipProof ((h, thy), orig_thy) => SkipProof ((History.apply I h, thy), orig_thy)
16815
13d20ed9086c added print_state_hook;
wenzelm
parents: 16729
diff changeset
   557
    | _ => raise UNDEF));
15668
53c049a365cf improved exn_message;
wenzelm
parents: 15633
diff changeset
   558
17904
21c6894b5998 simplified interfaces proof/proof' etc.: perform ProofHistory.apply(s)/current internally;
wenzelm
parents: 17513
diff changeset
   559
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
   560
val proofs = proofs' o K;
6689
wenzelm
parents: 6664
diff changeset
   561
val proof = proof' o K;
16815
13d20ed9086c added print_state_hook;
wenzelm
parents: 16729
diff changeset
   562
13d20ed9086c added print_state_hook;
wenzelm
parents: 16729
diff changeset
   563
fun actual_proof f = map_current (fn _ =>
18563
wenzelm
parents: 17904
diff changeset
   564
  (fn Proof (prf, orig_thy) => Proof (f prf, orig_thy) | _ => raise UNDEF));
16815
13d20ed9086c added print_state_hook;
wenzelm
parents: 16729
diff changeset
   565
13d20ed9086c added print_state_hook;
wenzelm
parents: 16729
diff changeset
   566
fun skip_proof f = map_current (fn _ =>
18563
wenzelm
parents: 17904
diff changeset
   567
  (fn SkipProof ((h, thy), orig_thy) => SkipProof ((f h, thy), orig_thy) | _ => raise UNDEF));
15668
53c049a365cf improved exn_message;
wenzelm
parents: 15633
diff changeset
   568
17904
21c6894b5998 simplified interfaces proof/proof' etc.: perform ProofHistory.apply(s)/current internally;
wenzelm
parents: 17513
diff changeset
   569
fun end_proof f = map_current (fn int =>
18563
wenzelm
parents: 17904
diff changeset
   570
  (fn Proof (prf, _) => Theory (f int (ProofHistory.current prf))
wenzelm
parents: 17904
diff changeset
   571
    | SkipProof ((h, thy), _) => if History.current h = 0 then Theory (thy, NONE) else raise UNDEF
wenzelm
parents: 17904
diff changeset
   572
    | _ => raise UNDEF));
wenzelm
parents: 17904
diff changeset
   573
wenzelm
parents: 17904
diff changeset
   574
val forget_proof = map_current (fn _ =>
wenzelm
parents: 17904
diff changeset
   575
  (fn Proof (_, orig_thy) => Theory (orig_thy, NONE)
wenzelm
parents: 17904
diff changeset
   576
    | SkipProof (_, orig_thy) => Theory (orig_thy, NONE)
15237
250e9be7a09d Some changes to allow skipping of proof scripts.
berghofe
parents: 14985
diff changeset
   577
    | _ => raise UNDEF));
15668
53c049a365cf improved exn_message;
wenzelm
parents: 15633
diff changeset
   578
17076
c7effdf2e2e2 state: body context;
wenzelm
parents: 16815
diff changeset
   579
fun proof_to_theory' f = end_proof (rpair NONE oo f);
c7effdf2e2e2 state: body context;
wenzelm
parents: 16815
diff changeset
   580
fun proof_to_theory f = proof_to_theory' (K f);
18811
15f9fe3064ef swapped theory_context;
wenzelm
parents: 18718
diff changeset
   581
fun proof_to_theory_context f = end_proof ((swap o apfst SOME) oo f);
15668
53c049a365cf improved exn_message;
wenzelm
parents: 15633
diff changeset
   582
16815
13d20ed9086c added print_state_hook;
wenzelm
parents: 16729
diff changeset
   583
fun skip_proof_to_theory p = map_current (fn _ =>
18563
wenzelm
parents: 17904
diff changeset
   584
  (fn SkipProof ((h, thy), _) =>
17904
21c6894b5998 simplified interfaces proof/proof' etc.: perform ProofHistory.apply(s)/current internally;
wenzelm
parents: 17513
diff changeset
   585
    if p (History.current h) then Theory (thy, NONE)
21c6894b5998 simplified interfaces proof/proof' etc.: perform ProofHistory.apply(s)/current internally;
wenzelm
parents: 17513
diff changeset
   586
    else raise UNDEF
21c6894b5998 simplified interfaces proof/proof' etc.: perform ProofHistory.apply(s)/current internally;
wenzelm
parents: 17513
diff changeset
   587
  | _ => raise UNDEF));
5828
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   588
19063
049c010c8fb7 added cases_node;
wenzelm
parents: 18955
diff changeset
   589
fun present_local_theory loc f = app_current (fn int =>
049c010c8fb7 added cases_node;
wenzelm
parents: 18955
diff changeset
   590
  (fn Theory (thy, _) => Theory (swap (apfst SOME (LocalTheory.mapping loc I thy)))
049c010c8fb7 added cases_node;
wenzelm
parents: 18955
diff changeset
   591
    | _ => raise UNDEF) #> tap (f int));
049c010c8fb7 added cases_node;
wenzelm
parents: 18955
diff changeset
   592
049c010c8fb7 added cases_node;
wenzelm
parents: 18955
diff changeset
   593
fun present_proof f = map_current (fn int =>
049c010c8fb7 added cases_node;
wenzelm
parents: 18955
diff changeset
   594
  (fn node as Proof _ => node | _ => raise UNDEF) #> tap (f int));
049c010c8fb7 added cases_node;
wenzelm
parents: 18955
diff changeset
   595
9512
c30f6d0f81d2 added unknown_theory/proof/context;
wenzelm
parents: 9453
diff changeset
   596
val unknown_theory = imperative (fn () => warning "Unknown theory context");
c30f6d0f81d2 added unknown_theory/proof/context;
wenzelm
parents: 9453
diff changeset
   597
val unknown_proof = imperative (fn () => warning "Unknown proof context");
c30f6d0f81d2 added unknown_theory/proof/context;
wenzelm
parents: 9453
diff changeset
   598
val unknown_context = imperative (fn () => warning "Unknown context");
c30f6d0f81d2 added unknown_theory/proof/context;
wenzelm
parents: 9453
diff changeset
   599
5828
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   600
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   601
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   602
(** toplevel transactions **)
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   603
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   604
(* apply transitions *)
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   605
6664
f679ddd1ddd8 cleaned comments;
wenzelm
parents: 6244
diff changeset
   606
local
f679ddd1ddd8 cleaned comments;
wenzelm
parents: 6244
diff changeset
   607
9010
ce78dc5e1a73 Toplevel.no_timing;
wenzelm
parents: 8999
diff changeset
   608
fun app int (tr as Transition {trans, int_only, print, no_timing, ...}) state =
5828
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   609
  let
16682
wenzelm
parents: 16658
diff changeset
   610
    val _ = conditional (not int andalso int_only) (fn () =>
wenzelm
parents: 16658
diff changeset
   611
      warning (command_msg "Interactive-only " tr));
wenzelm
parents: 16658
diff changeset
   612
18685
725660906cb3 sane ERROR vs. TOPLEVEL_ERROR handling;
wenzelm
parents: 18664
diff changeset
   613
    fun do_timing f x = (Output.info (command_msg "" tr); timeap f x);
16682
wenzelm
parents: 16658
diff changeset
   614
    fun do_profiling f x = profile (! profiling) f x;
wenzelm
parents: 16658
diff changeset
   615
6689
wenzelm
parents: 6664
diff changeset
   616
    val (result, opt_exn) =
16729
24c5c94aa967 debug: exception_trace;
wenzelm
parents: 16682
diff changeset
   617
       state |> (apply_trans int trans
24c5c94aa967 debug: exception_trace;
wenzelm
parents: 16682
diff changeset
   618
        |> (if ! profiling > 0 then do_profiling else I)
24c5c94aa967 debug: exception_trace;
wenzelm
parents: 16682
diff changeset
   619
        |> (if ! profiling > 0 orelse ! timing andalso not no_timing then do_timing else I));
16607
81e687c63e29 added print': print depending on print_mode;
wenzelm
parents: 16490
diff changeset
   620
    val _ = conditional (int andalso not (! quiet) andalso
81e687c63e29 added print': print depending on print_mode;
wenzelm
parents: 16490
diff changeset
   621
        exists (fn m => m mem_string print) ("" :: ! print_mode))
81e687c63e29 added print': print depending on print_mode;
wenzelm
parents: 16490
diff changeset
   622
      (fn () => print_state false result);
15570
8d8c70b41bab Move towards standard functions.
skalberg
parents: 15549
diff changeset
   623
  in (result, Option.map (fn UNDEF => type_error tr state | exn => exn) opt_exn) end;
6664
f679ddd1ddd8 cleaned comments;
wenzelm
parents: 6244
diff changeset
   624
f679ddd1ddd8 cleaned comments;
wenzelm
parents: 6244
diff changeset
   625
in
5828
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   626
6689
wenzelm
parents: 6664
diff changeset
   627
fun apply int tr st =
6965
a766de752996 fixed interrupts (eliminated races);
wenzelm
parents: 6689
diff changeset
   628
  (case app int tr st of
15531
08c8dad8e399 Deleted Library.option type.
skalberg
parents: 15519
diff changeset
   629
    (_, SOME TERMINATE) => NONE
08c8dad8e399 Deleted Library.option type.
skalberg
parents: 15519
diff changeset
   630
  | (_, SOME RESTART) => SOME (toplevel, NONE)
08c8dad8e399 Deleted Library.option type.
skalberg
parents: 15519
diff changeset
   631
  | (state', SOME (EXCURSION_FAIL exn_info)) => SOME (state', SOME exn_info)
08c8dad8e399 Deleted Library.option type.
skalberg
parents: 15519
diff changeset
   632
  | (state', SOME exn) => SOME (state', SOME (exn, at_command tr))
08c8dad8e399 Deleted Library.option type.
skalberg
parents: 15519
diff changeset
   633
  | (state', NONE) => SOME (state', NONE));
6664
f679ddd1ddd8 cleaned comments;
wenzelm
parents: 6244
diff changeset
   634
f679ddd1ddd8 cleaned comments;
wenzelm
parents: 6244
diff changeset
   635
end;
5828
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   636
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   637
17076
c7effdf2e2e2 state: body context;
wenzelm
parents: 16815
diff changeset
   638
(* excursion: toplevel -- apply transformers/presentation -- toplevel *)
5828
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   639
6664
f679ddd1ddd8 cleaned comments;
wenzelm
parents: 6244
diff changeset
   640
local
f679ddd1ddd8 cleaned comments;
wenzelm
parents: 6244
diff changeset
   641
5828
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   642
fun excur [] x = x
17076
c7effdf2e2e2 state: body context;
wenzelm
parents: 16815
diff changeset
   643
  | excur ((tr, pr) :: trs) (st, res) =
17321
227f1f5c3959 added interact flag to control mode of excursions;
wenzelm
parents: 17320
diff changeset
   644
      (case apply (! interact) tr st of
15531
08c8dad8e399 Deleted Library.option type.
skalberg
parents: 15519
diff changeset
   645
        SOME (st', NONE) =>
18685
725660906cb3 sane ERROR vs. TOPLEVEL_ERROR handling;
wenzelm
parents: 18664
diff changeset
   646
          excur trs (st', pr st st' res handle exn =>
10324
498999fd7c37 tuned msg;
wenzelm
parents: 9512
diff changeset
   647
            raise EXCURSION_FAIL (exn, "Presentation failed\n" ^ at_command tr))
15531
08c8dad8e399 Deleted Library.option type.
skalberg
parents: 15519
diff changeset
   648
      | SOME (st', SOME exn_info) => raise EXCURSION_FAIL exn_info
08c8dad8e399 Deleted Library.option type.
skalberg
parents: 15519
diff changeset
   649
      | NONE => raise EXCURSION_FAIL (TERMINATE, at_command tr));
5828
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   650
17076
c7effdf2e2e2 state: body context;
wenzelm
parents: 16815
diff changeset
   651
fun no_pr _ _ _ = ();
c7effdf2e2e2 state: body context;
wenzelm
parents: 16815
diff changeset
   652
6664
f679ddd1ddd8 cleaned comments;
wenzelm
parents: 6244
diff changeset
   653
in
f679ddd1ddd8 cleaned comments;
wenzelm
parents: 6244
diff changeset
   654
17076
c7effdf2e2e2 state: body context;
wenzelm
parents: 16815
diff changeset
   655
fun present_excursion trs res =
15531
08c8dad8e399 Deleted Library.option type.
skalberg
parents: 15519
diff changeset
   656
  (case excur trs (State NONE, res) of
08c8dad8e399 Deleted Library.option type.
skalberg
parents: 15519
diff changeset
   657
    (State NONE, res') => res'
18685
725660906cb3 sane ERROR vs. TOPLEVEL_ERROR handling;
wenzelm
parents: 18664
diff changeset
   658
  | _ => error "Unfinished development at end of input")
9134
b38e94631f19 excursion_result;
wenzelm
parents: 9010
diff changeset
   659
  handle exn => error (exn_message exn);
b38e94631f19 excursion_result;
wenzelm
parents: 9010
diff changeset
   660
17076
c7effdf2e2e2 state: body context;
wenzelm
parents: 16815
diff changeset
   661
fun excursion trs = present_excursion (map (rpair no_pr) trs) ();
7062
e992884b256d Toplevel.excursion_error;
wenzelm
parents: 7022
diff changeset
   662
6664
f679ddd1ddd8 cleaned comments;
wenzelm
parents: 6244
diff changeset
   663
end;
f679ddd1ddd8 cleaned comments;
wenzelm
parents: 6244
diff changeset
   664
5828
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   665
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   666
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   667
(** interactive transformations **)
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   668
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   669
(* the global state reference *)
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   670
15531
08c8dad8e399 Deleted Library.option type.
skalberg
parents: 15519
diff changeset
   671
val global_state = ref (toplevel, NONE: (exn * string) option);
5828
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   672
15531
08c8dad8e399 Deleted Library.option type.
skalberg
parents: 15519
diff changeset
   673
fun set_state state = global_state := (state, NONE);
5828
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   674
fun get_state () = fst (! global_state);
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   675
fun exn () = snd (! global_state);
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   676
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   677
6965
a766de752996 fixed interrupts (eliminated races);
wenzelm
parents: 6689
diff changeset
   678
(* the Isar source of transitions *)
a766de752996 fixed interrupts (eliminated races);
wenzelm
parents: 6689
diff changeset
   679
14091
ad6ba9c55190 A patch by david aspinall
nipkow
parents: 13486
diff changeset
   680
type 'a isar =
6965
a766de752996 fixed interrupts (eliminated races);
wenzelm
parents: 6689
diff changeset
   681
  (transition, (transition option,
12881
eeb36b66480e ANTIQUOTE_FAIL;
wenzelm
parents: 12423
diff changeset
   682
    (OuterLex.token, (OuterLex.token option, (OuterLex.token, (OuterLex.token,
14091
ad6ba9c55190 A patch by david aspinall
nipkow
parents: 13486
diff changeset
   683
      Position.T * (Symbol.symbol, (string, 'a) Source.source) Source.source)
12881
eeb36b66480e ANTIQUOTE_FAIL;
wenzelm
parents: 12423
diff changeset
   684
          Source.source) Source.source) Source.source) Source.source) Source.source) Source.source;
6965
a766de752996 fixed interrupts (eliminated races);
wenzelm
parents: 6689
diff changeset
   685
a766de752996 fixed interrupts (eliminated races);
wenzelm
parents: 6689
diff changeset
   686
5828
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   687
(* apply transformers to global state *)
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   688
14985
fefcf6cd858a added >>> : transition list -> unit;
wenzelm
parents: 14981
diff changeset
   689
nonfix >> >>>;
5828
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   690
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   691
fun >> tr =
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   692
  (case apply true tr (get_state ()) of
15531
08c8dad8e399 Deleted Library.option type.
skalberg
parents: 15519
diff changeset
   693
    NONE => false
08c8dad8e399 Deleted Library.option type.
skalberg
parents: 15519
diff changeset
   694
  | SOME (state', exn_info) =>
5828
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   695
      (global_state := (state', exn_info);
16729
24c5c94aa967 debug: exception_trace;
wenzelm
parents: 16682
diff changeset
   696
        print_exn exn_info;
5828
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   697
        true));
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   698
14985
fefcf6cd858a added >>> : transition list -> unit;
wenzelm
parents: 14981
diff changeset
   699
fun >>> [] = ()
fefcf6cd858a added >>> : transition list -> unit;
wenzelm
parents: 14981
diff changeset
   700
  | >>> (tr :: trs) = if >> tr then >>> trs else ();
fefcf6cd858a added >>> : transition list -> unit;
wenzelm
parents: 14981
diff changeset
   701
17513
0393718c2f1c get_interrupt: special handling of IO.io now in ML-Systems/smlnj-basis-compat.ML;
wenzelm
parents: 17500
diff changeset
   702
(*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
   703
fun get_interrupt src = SOME (Source.get_single src) handle Interrupt => NONE;
7602
2c0f407f80ce avoid interrupts of read loop;
wenzelm
parents: 7501
diff changeset
   704
5828
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   705
fun raw_loop src =
7602
2c0f407f80ce avoid interrupts of read loop;
wenzelm
parents: 7501
diff changeset
   706
  (case get_interrupt (Source.set_prompt (prompt_state (get_state ())) src) of
15531
08c8dad8e399 Deleted Library.option type.
skalberg
parents: 15519
diff changeset
   707
    NONE => (writeln "\nInterrupt."; raw_loop src)
08c8dad8e399 Deleted Library.option type.
skalberg
parents: 15519
diff changeset
   708
  | SOME NONE => ()
08c8dad8e399 Deleted Library.option type.
skalberg
parents: 15519
diff changeset
   709
  | SOME (SOME (tr, src')) => if >> tr then raw_loop src' else ());
5828
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   710
12987
b6db96775e52 use ignore_interrupt, raise_interrupt;
wenzelm
parents: 12881
diff changeset
   711
fun loop src = ignore_interrupt raw_loop src;
5828
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   712
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   713
end;