src/Pure/Isar/toplevel.ML
author wenzelm
Tue, 16 Aug 2005 13:42:47 +0200
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child 17115 127aa3d49129
permissions -rw-r--r--
state: body context; added theory_context, proof_to_theory_context; added is_proof, level; turned excursion_result into present_excursion;
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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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  datatype node =
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    Theory of theory * Proof.context option |
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    Proof of ProofHistory.T |
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    SkipProof of int History.T * theory
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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 level: state -> int
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  exception UNDEF
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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 theory_of: state -> theory
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  val sign_of: state -> theory    (*obsolete*)
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  val body_context_of: state -> Proof.context
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  val proof_of: state -> Proof.state
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  val is_proof: state -> bool
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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 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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  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 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 keep: (state -> unit) -> transition -> transition
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  val keep': (bool -> state -> unit) -> transition -> transition
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  val history: (node History.T -> node History.T) -> 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 -> theory * Proof.context) -> transition -> transition
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  val theory_to_proof: (bool -> theory -> ProofHistory.T) -> transition -> transition
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  val proof: (ProofHistory.T -> ProofHistory.T) -> transition -> transition
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  val proof': (bool -> ProofHistory.T -> ProofHistory.T) -> 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: (ProofHistory.T -> theory) -> transition -> transition
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  val proof_to_theory': (bool -> ProofHistory.T -> theory) -> transition -> transition
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  val proof_to_theory_context: (ProofHistory.T -> theory * Proof.context)
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    -> transition -> transition
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  val skip_proof_to_theory: (int History.T -> 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 exn_message: exn -> string
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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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(* 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 |                  (*history of proof states*)
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  SkipProof of int History.T * theory;       (*history of proof depths*)
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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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exception 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 node_case f g state =
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  (case node_of state of
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    Theory (thy, _) => f thy
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  | Proof prf => g (ProofHistory.current prf)
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  | SkipProof (_, thy) => f thy);
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val theory_of = node_case I Proof.theory_of;
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val sign_of = theory_of;
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fun body_context_of state =
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  (case node_of state of
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    Theory (_, SOME ctxt) => ctxt
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  | _ => node_case ProofContext.init Proof.context_of state);
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val proof_of = node_case (fn _ => raise UNDEF) I;
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val is_proof = can proof_of;
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val enter_forward_proof = node_case Proof.init_state 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 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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(* 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_MESSAGE "Stale theory encountered after succesful execution!";
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fun checkpoint_node true (Theory (thy, ctxt)) = Theory (Theory.checkpoint thy, ctxt)
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  | checkpoint_node _ node = node;
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fun copy_node true (Theory (thy, ctxt)) = Theory (Theory.copy thy, ctxt)
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  | copy_node _ 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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fun debug_trans f x =
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  if ! debug then
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    setmp Output.transform_exceptions 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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  in raise_interrupt (fn () => y := f x) (); ! y end;
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in
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fun transaction _ _ _ (State NONE) = raise UNDEF
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  | transaction int hist f (State (SOME (node, term))) =
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      let
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        val cont_node = History.map (checkpoint_node int) node;
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        val back_node = History.map (copy_node int) cont_node;
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        fun state nd = State (SOME (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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          cont_node
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          |> ((fn nd => f int nd)
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              |> (if hist then History.apply_copy (copy_node int) else History.map)
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              |> debug_trans
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              |> interruptible
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              |> transform_error)
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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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        then return (error_state back_node (if_none err stale_theory))
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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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(*NB: recovery from stale theories is provided only for theory-level
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  operations via MapCurrent and AppCurrent.  Other node or state
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  operations should not touch theories at all.
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  Interrupts are enabled only for Keep, MapCurrent, and AppCurrent.*)
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datatype trans =
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  Reset |                                       (*empty toplevel*)
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  Init of (bool -> node) * ((node -> unit) * (node -> unit)) |
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    (*init node; provide exit/kill operation*)
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  Exit |                                        (*conclude node*)
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  Kill |                                        (*abort node*)
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  Keep of bool -> state -> unit |               (*peek at state*)
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  History of node History.T -> node History.T | (*history operation (undo etc.)*)
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  MapCurrent of bool -> node -> node |          (*change node, bypassing history*)
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  AppCurrent of bool -> node -> node;           (*change node, recording history*)
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fun undo_limit int = if int then NONE else SOME 0;
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local
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fun apply_tr _ Reset _ = toplevel
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  | apply_tr int (Init (f, term)) (State NONE) =
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      State (SOME (History.init (undo_limit int) (f int), term))
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  | apply_tr _ (Init _ ) (State (SOME _)) = raise UNDEF
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  | apply_tr _ Exit (State NONE) = raise UNDEF
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  | apply_tr _ Exit (State (SOME (node, (exit, _)))) =
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      (exit (History.current node); State NONE)
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  | apply_tr _ Kill (State NONE) = raise UNDEF
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  | apply_tr _ Kill (State (SOME (node, (_, kill)))) =
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      (kill (History.current node); State NONE)
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  | apply_tr int (Keep f) state = (raise_interrupt (f int) state; state)
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  | apply_tr _ (History _) (State NONE) = raise UNDEF
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  | apply_tr _ (History f) (State (SOME (node, term))) = State (SOME (f node, term))
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  | apply_tr int (MapCurrent f) state = transaction int false f state
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  | apply_tr int (AppCurrent f) state = transaction int true f state;
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fun apply_union _ [] state = raise FAILURE (state, UNDEF)
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  | apply_union int (tr :: trs) state =
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      transform_error (apply_tr int tr) state
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        handle UNDEF => apply_union int trs state
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          | FAILURE (alt_state, UNDEF) => apply_union int trs alt_state
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          | exn as FAILURE _ => raise exn
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          | exn => raise FAILURE (state, exn);
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in
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fun apply_trans int trs state = (apply_union int trs state, NONE)
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  handle FAILURE (alt_state, exn) => (alt_state, SOME exn) | exn => (state, SOME exn);
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end;
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(* datatype transition *)
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datatype transition = Transition of
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 {name: string,                        (*command name*)
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  pos: Position.T,                     (*source position*)
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  source: OuterLex.token list option,  (*source text*)
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  int_only: bool,                      (*interactive-only*)
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  print: string list,                  (*print modes (union)*)
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  no_timing: bool,                     (*suppress timing*)
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  trans: trans list};                  (*primitive transitions (union)*)
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fun make_transition (name, pos, source, int_only, print, no_timing, trans) =
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  Transition {name = name, pos = pos, source = source,
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    int_only = int_only, print = print, no_timing = no_timing, trans = trans};
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   345
14923
8a32071c3c13 added name_of, source_of, source;
wenzelm
parents: 14825
diff changeset
   346
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
   347
  make_transition (f (name, pos, source, int_only, print, no_timing, trans));
5828
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   348
16607
81e687c63e29 added print': print depending on print_mode;
wenzelm
parents: 16490
diff changeset
   349
val empty = make_transition ("<unknown>", Position.none, NONE, false, [], false, []);
14923
8a32071c3c13 added name_of, source_of, source;
wenzelm
parents: 14825
diff changeset
   350
8a32071c3c13 added name_of, source_of, source;
wenzelm
parents: 14825
diff changeset
   351
fun name_of (Transition {name, ...}) = name;
8a32071c3c13 added name_of, source_of, source;
wenzelm
parents: 14825
diff changeset
   352
fun source_of (Transition {source, ...}) = source;
5828
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   353
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   354
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   355
(* diagnostics *)
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   356
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   357
fun str_of_transition (Transition {name, pos, ...}) = quote name ^ Position.str_of pos;
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   358
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   359
fun command_msg msg tr = msg ^ "command " ^ str_of_transition tr;
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   360
fun at_command tr = command_msg "At " tr ^ ".";
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   361
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   362
fun type_error tr state =
6689
wenzelm
parents: 6664
diff changeset
   363
  ERROR_MESSAGE (command_msg "Illegal application of " tr ^ " " ^ str_of_state state);
5828
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   364
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   365
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   366
(* modify transitions *)
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   367
14923
8a32071c3c13 added name_of, source_of, source;
wenzelm
parents: 14825
diff changeset
   368
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
   369
  (nm, pos, source, int_only, print, no_timing, trans));
5828
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   370
14923
8a32071c3c13 added name_of, source_of, source;
wenzelm
parents: 14825
diff changeset
   371
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
   372
  (name, pos, source, int_only, print, no_timing, trans));
9010
ce78dc5e1a73 Toplevel.no_timing;
wenzelm
parents: 8999
diff changeset
   373
14923
8a32071c3c13 added name_of, source_of, source;
wenzelm
parents: 14825
diff changeset
   374
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
   375
  (name, pos, SOME src, int_only, print, no_timing, trans));
5828
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   376
14923
8a32071c3c13 added name_of, source_of, source;
wenzelm
parents: 14825
diff changeset
   377
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
   378
  (name, pos, source, int_only, print, no_timing, trans));
8a32071c3c13 added name_of, source_of, source;
wenzelm
parents: 14825
diff changeset
   379
16607
81e687c63e29 added print': print depending on print_mode;
wenzelm
parents: 16490
diff changeset
   380
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
   381
  (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
   382
81e687c63e29 added print': print depending on print_mode;
wenzelm
parents: 16490
diff changeset
   383
val print = print' "";
5828
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   384
14923
8a32071c3c13 added name_of, source_of, source;
wenzelm
parents: 14825
diff changeset
   385
val no_timing = map_transition (fn (name, pos, source, int_only, print, _, trans) =>
8a32071c3c13 added name_of, source_of, source;
wenzelm
parents: 14825
diff changeset
   386
  (name, pos, source, int_only, print, true, trans));
5828
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   387
14923
8a32071c3c13 added name_of, source_of, source;
wenzelm
parents: 14825
diff changeset
   388
fun add_trans tr = map_transition (fn (name, pos, source, int_only, print, no_timing, trans) =>
8a32071c3c13 added name_of, source_of, source;
wenzelm
parents: 14825
diff changeset
   389
  (name, pos, source, int_only, print, no_timing, trans @ [tr]));
5828
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   390
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   391
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   392
(* build transitions *)
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   393
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   394
val reset = add_trans Reset;
6689
wenzelm
parents: 6664
diff changeset
   395
fun init f exit kill = add_trans (Init (f, (exit, kill)));
wenzelm
parents: 6664
diff changeset
   396
val exit = add_trans Exit;
wenzelm
parents: 6664
diff changeset
   397
val kill = add_trans Kill;
7612
ba11b5db431a added keep', theory';
wenzelm
parents: 7602
diff changeset
   398
val keep' = add_trans o Keep;
6689
wenzelm
parents: 6664
diff changeset
   399
val history = add_trans o History;
5828
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   400
val map_current = add_trans o MapCurrent;
6689
wenzelm
parents: 6664
diff changeset
   401
val app_current = add_trans o AppCurrent;
5828
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   402
7612
ba11b5db431a added keep', theory';
wenzelm
parents: 7602
diff changeset
   403
fun keep f = add_trans (Keep (fn _ => f));
5828
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   404
fun imperative f = keep (fn _ => f ());
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   405
6689
wenzelm
parents: 6664
diff changeset
   406
fun init_theory f exit kill =
17076
c7effdf2e2e2 state: body context;
wenzelm
parents: 16815
diff changeset
   407
  init (fn int => Theory (f int, NONE))
c7effdf2e2e2 state: body context;
wenzelm
parents: 16815
diff changeset
   408
    (fn Theory (thy, _) => exit thy | _ => raise UNDEF)
c7effdf2e2e2 state: body context;
wenzelm
parents: 16815
diff changeset
   409
    (fn Theory (thy, _) => kill thy | _ => raise UNDEF);
5828
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   410
15668
53c049a365cf improved exn_message;
wenzelm
parents: 15633
diff changeset
   411
53c049a365cf improved exn_message;
wenzelm
parents: 15633
diff changeset
   412
(* typed transitions *)
53c049a365cf improved exn_message;
wenzelm
parents: 15633
diff changeset
   413
17076
c7effdf2e2e2 state: body context;
wenzelm
parents: 16815
diff changeset
   414
fun theory f = app_current (K (fn Theory (thy, _) => Theory (f thy, NONE) | _ => raise UNDEF));
c7effdf2e2e2 state: body context;
wenzelm
parents: 16815
diff changeset
   415
fun theory' f = app_current (fn int =>
c7effdf2e2e2 state: body context;
wenzelm
parents: 16815
diff changeset
   416
  (fn Theory (thy, _) => Theory (f int thy, NONE) | _ => raise UNDEF));
c7effdf2e2e2 state: body context;
wenzelm
parents: 16815
diff changeset
   417
c7effdf2e2e2 state: body context;
wenzelm
parents: 16815
diff changeset
   418
fun theory_context f =
c7effdf2e2e2 state: body context;
wenzelm
parents: 16815
diff changeset
   419
  app_current (K (fn Theory (thy, _) => Theory (apsnd SOME (f thy)) | _ => raise UNDEF));
15668
53c049a365cf improved exn_message;
wenzelm
parents: 15633
diff changeset
   420
15237
250e9be7a09d Some changes to allow skipping of proof scripts.
berghofe
parents: 14985
diff changeset
   421
fun theory_to_proof f = app_current (fn int =>
17076
c7effdf2e2e2 state: body context;
wenzelm
parents: 16815
diff changeset
   422
  (fn Theory (thy, _) =>
15668
53c049a365cf improved exn_message;
wenzelm
parents: 15633
diff changeset
   423
        if ! skip_proofs then SkipProof (History.init (undo_limit int) 0,
15237
250e9be7a09d Some changes to allow skipping of proof scripts.
berghofe
parents: 14985
diff changeset
   424
          fst (SkipProof.global_skip_proof int (ProofHistory.current (f int thy))))
250e9be7a09d Some changes to allow skipping of proof scripts.
berghofe
parents: 14985
diff changeset
   425
        else Proof (f int thy)
250e9be7a09d Some changes to allow skipping of proof scripts.
berghofe
parents: 14985
diff changeset
   426
    | _ => raise UNDEF));
15668
53c049a365cf improved exn_message;
wenzelm
parents: 15633
diff changeset
   427
16815
13d20ed9086c added print_state_hook;
wenzelm
parents: 16729
diff changeset
   428
fun proof' f = map_current (fn int =>
13d20ed9086c added print_state_hook;
wenzelm
parents: 16729
diff changeset
   429
  (fn Proof prf => Proof (f int prf)
13d20ed9086c added print_state_hook;
wenzelm
parents: 16729
diff changeset
   430
    | SkipProof (h, thy) => SkipProof (History.apply I h, thy)   (*approximate f*)
13d20ed9086c added print_state_hook;
wenzelm
parents: 16729
diff changeset
   431
    | _ => raise UNDEF));
15668
53c049a365cf improved exn_message;
wenzelm
parents: 15633
diff changeset
   432
6689
wenzelm
parents: 6664
diff changeset
   433
val proof = proof' o K;
16815
13d20ed9086c added print_state_hook;
wenzelm
parents: 16729
diff changeset
   434
13d20ed9086c added print_state_hook;
wenzelm
parents: 16729
diff changeset
   435
fun actual_proof f = map_current (fn _ =>
13d20ed9086c added print_state_hook;
wenzelm
parents: 16729
diff changeset
   436
  (fn Proof prf => Proof (f prf) | _ => raise UNDEF));
13d20ed9086c added print_state_hook;
wenzelm
parents: 16729
diff changeset
   437
13d20ed9086c added print_state_hook;
wenzelm
parents: 16729
diff changeset
   438
fun skip_proof f = map_current (fn _ =>
13d20ed9086c added print_state_hook;
wenzelm
parents: 16729
diff changeset
   439
  (fn SkipProof (h, thy) => SkipProof (f h, thy) | _ => raise UNDEF));
15668
53c049a365cf improved exn_message;
wenzelm
parents: 15633
diff changeset
   440
17076
c7effdf2e2e2 state: body context;
wenzelm
parents: 16815
diff changeset
   441
fun end_proof f =
15237
250e9be7a09d Some changes to allow skipping of proof scripts.
berghofe
parents: 14985
diff changeset
   442
  map_current (fn int => (fn Proof prf => Theory (f int prf)
17076
c7effdf2e2e2 state: body context;
wenzelm
parents: 16815
diff changeset
   443
    | SkipProof (h, thy) => if History.current h = 0 then Theory (thy, NONE) else raise UNDEF
15237
250e9be7a09d Some changes to allow skipping of proof scripts.
berghofe
parents: 14985
diff changeset
   444
    | _ => raise UNDEF));
15668
53c049a365cf improved exn_message;
wenzelm
parents: 15633
diff changeset
   445
17076
c7effdf2e2e2 state: body context;
wenzelm
parents: 16815
diff changeset
   446
fun proof_to_theory' f = end_proof (rpair NONE oo f);
c7effdf2e2e2 state: body context;
wenzelm
parents: 16815
diff changeset
   447
fun proof_to_theory f = proof_to_theory' (K f);
c7effdf2e2e2 state: body context;
wenzelm
parents: 16815
diff changeset
   448
fun proof_to_theory_context f = end_proof (K (apsnd SOME o f));
15668
53c049a365cf improved exn_message;
wenzelm
parents: 15633
diff changeset
   449
16815
13d20ed9086c added print_state_hook;
wenzelm
parents: 16729
diff changeset
   450
fun skip_proof_to_theory p = map_current (fn _ =>
17076
c7effdf2e2e2 state: body context;
wenzelm
parents: 16815
diff changeset
   451
  (fn SkipProof (h, thy) => if p h then Theory (thy, NONE) else raise UNDEF | _ => raise UNDEF));
5828
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   452
9512
c30f6d0f81d2 added unknown_theory/proof/context;
wenzelm
parents: 9453
diff changeset
   453
val unknown_theory = imperative (fn () => warning "Unknown theory context");
c30f6d0f81d2 added unknown_theory/proof/context;
wenzelm
parents: 9453
diff changeset
   454
val unknown_proof = imperative (fn () => warning "Unknown proof context");
c30f6d0f81d2 added unknown_theory/proof/context;
wenzelm
parents: 9453
diff changeset
   455
val unknown_context = imperative (fn () => warning "Unknown context");
c30f6d0f81d2 added unknown_theory/proof/context;
wenzelm
parents: 9453
diff changeset
   456
5828
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   457
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   458
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   459
(** toplevel transactions **)
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   460
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   461
(* print exceptions *)
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   462
15668
53c049a365cf improved exn_message;
wenzelm
parents: 15633
diff changeset
   463
local
53c049a365cf improved exn_message;
wenzelm
parents: 15633
diff changeset
   464
53c049a365cf improved exn_message;
wenzelm
parents: 15633
diff changeset
   465
fun with_context f xs =
53c049a365cf improved exn_message;
wenzelm
parents: 15633
diff changeset
   466
  (case Context.get_context () of NONE => []
16452
71f3e0041f14 Context.DATA_FAIL;
wenzelm
parents: 16197
diff changeset
   467
  | SOME thy => map (f thy) xs);
15668
53c049a365cf improved exn_message;
wenzelm
parents: 15633
diff changeset
   468
53c049a365cf improved exn_message;
wenzelm
parents: 15633
diff changeset
   469
fun raised name [] = "exception " ^ name ^ " raised"
53c049a365cf improved exn_message;
wenzelm
parents: 15633
diff changeset
   470
  | raised name [msg] = "exception " ^ name ^ " raised: " ^ msg
53c049a365cf improved exn_message;
wenzelm
parents: 15633
diff changeset
   471
  | raised name msgs = cat_lines (("exception " ^ name ^ " raised:") :: msgs);
5828
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   472
15668
53c049a365cf improved exn_message;
wenzelm
parents: 15633
diff changeset
   473
fun exn_msg _ TERMINATE = "Exit."
53c049a365cf improved exn_message;
wenzelm
parents: 15633
diff changeset
   474
  | exn_msg _ RESTART = "Restart."
53c049a365cf improved exn_message;
wenzelm
parents: 15633
diff changeset
   475
  | exn_msg _ Interrupt = "Interrupt."
53c049a365cf improved exn_message;
wenzelm
parents: 15633
diff changeset
   476
  | exn_msg _ ERROR = "ERROR."
53c049a365cf improved exn_message;
wenzelm
parents: 15633
diff changeset
   477
  | exn_msg _ (ERROR_MESSAGE msg) = msg
16452
71f3e0041f14 Context.DATA_FAIL;
wenzelm
parents: 16197
diff changeset
   478
  | exn_msg detailed (EXCURSION_FAIL (exn, msg)) = cat_lines [exn_msg detailed exn, msg]
71f3e0041f14 Context.DATA_FAIL;
wenzelm
parents: 16197
diff changeset
   479
  | exn_msg detailed (Context.DATA_FAIL (exn, msg)) = cat_lines [exn_msg detailed exn, msg]
16607
81e687c63e29 added print': print depending on print_mode;
wenzelm
parents: 16490
diff changeset
   480
  | exn_msg detailed (Syntax.TRANSLATION_FAIL (exn, msg)) = cat_lines [exn_msg detailed exn, msg]
15668
53c049a365cf improved exn_message;
wenzelm
parents: 15633
diff changeset
   481
  | exn_msg false (THEORY (msg, _)) = msg
16452
71f3e0041f14 Context.DATA_FAIL;
wenzelm
parents: 16197
diff changeset
   482
  | exn_msg true (THEORY (msg, thys)) = raised "THEORY" (msg :: map Context.str_of_thy thys)
15668
53c049a365cf improved exn_message;
wenzelm
parents: 15633
diff changeset
   483
  | exn_msg _ (ProofContext.CONTEXT (msg, _)) = msg
53c049a365cf improved exn_message;
wenzelm
parents: 15633
diff changeset
   484
  | exn_msg _ (Proof.STATE (msg, _)) = msg
53c049a365cf improved exn_message;
wenzelm
parents: 15633
diff changeset
   485
  | exn_msg _ (ProofHistory.FAIL msg) = msg
53c049a365cf improved exn_message;
wenzelm
parents: 15633
diff changeset
   486
  | exn_msg detailed (MetaSimplifier.SIMPROC_FAIL (name, exn)) =
53c049a365cf improved exn_message;
wenzelm
parents: 15633
diff changeset
   487
      fail_msg detailed "simproc" ((name, Position.none), exn)
53c049a365cf improved exn_message;
wenzelm
parents: 15633
diff changeset
   488
  | exn_msg detailed (Attrib.ATTRIB_FAIL info) = fail_msg detailed "attribute" info
53c049a365cf improved exn_message;
wenzelm
parents: 15633
diff changeset
   489
  | exn_msg detailed (Method.METHOD_FAIL info) = fail_msg detailed "method" info
53c049a365cf improved exn_message;
wenzelm
parents: 15633
diff changeset
   490
  | exn_msg detailed (Antiquote.ANTIQUOTE_FAIL info) = fail_msg detailed "antiquotation" info
53c049a365cf improved exn_message;
wenzelm
parents: 15633
diff changeset
   491
  | exn_msg false (Syntax.AST (msg, _)) = raised "AST" [msg]
53c049a365cf improved exn_message;
wenzelm
parents: 15633
diff changeset
   492
  | exn_msg true (Syntax.AST (msg, asts)) =
53c049a365cf improved exn_message;
wenzelm
parents: 15633
diff changeset
   493
      raised "AST" (msg :: map (Pretty.string_of o Syntax.pretty_ast) asts)
53c049a365cf improved exn_message;
wenzelm
parents: 15633
diff changeset
   494
  | exn_msg false (TYPE (msg, _, _)) = raised "TYPE" [msg]
53c049a365cf improved exn_message;
wenzelm
parents: 15633
diff changeset
   495
  | exn_msg true (TYPE (msg, Ts, ts)) = raised "TYPE" (msg ::
53c049a365cf improved exn_message;
wenzelm
parents: 15633
diff changeset
   496
        with_context Sign.string_of_typ Ts @ with_context Sign.string_of_term ts)
53c049a365cf improved exn_message;
wenzelm
parents: 15633
diff changeset
   497
  | exn_msg false (TERM (msg, _)) = raised "TERM" [msg]
53c049a365cf improved exn_message;
wenzelm
parents: 15633
diff changeset
   498
  | exn_msg true (TERM (msg, ts)) = raised "TERM" (msg :: with_context Sign.string_of_term ts)
53c049a365cf improved exn_message;
wenzelm
parents: 15633
diff changeset
   499
  | exn_msg false (THM (msg, _, _)) = raised "THM" [msg]
53c049a365cf improved exn_message;
wenzelm
parents: 15633
diff changeset
   500
  | exn_msg true (THM (msg, i, thms)) =
53c049a365cf improved exn_message;
wenzelm
parents: 15633
diff changeset
   501
      raised ("THM " ^ string_of_int i) (msg :: map Display.string_of_thm thms)
53c049a365cf improved exn_message;
wenzelm
parents: 15633
diff changeset
   502
  | exn_msg _ Option = raised "Option" []
53c049a365cf improved exn_message;
wenzelm
parents: 15633
diff changeset
   503
  | exn_msg _ UnequalLengths = raised "UnequalLengths" []
53c049a365cf improved exn_message;
wenzelm
parents: 15633
diff changeset
   504
  | exn_msg _ Empty = raised "Empty" []
53c049a365cf improved exn_message;
wenzelm
parents: 15633
diff changeset
   505
  | exn_msg _ Subscript = raised "Subscript" []
16197
f58a4ff5d6de tuned msgs;
wenzelm
parents: 16046
diff changeset
   506
  | exn_msg _ (Fail msg) = raised "Fail" [msg]
15668
53c049a365cf improved exn_message;
wenzelm
parents: 15633
diff changeset
   507
  | exn_msg _ exn = General.exnMessage exn
53c049a365cf improved exn_message;
wenzelm
parents: 15633
diff changeset
   508
and fail_msg detailed kind ((name, pos), exn) =
53c049a365cf improved exn_message;
wenzelm
parents: 15633
diff changeset
   509
  "Error in " ^ kind ^ " " ^ quote name ^ Position.str_of pos ^ ":\n" ^ exn_msg detailed exn;
15519
7751ed89ab50 Toplevel.debug for debugging in Isar.
ballarin
parents: 15431
diff changeset
   510
15668
53c049a365cf improved exn_message;
wenzelm
parents: 15633
diff changeset
   511
in
53c049a365cf improved exn_message;
wenzelm
parents: 15633
diff changeset
   512
53c049a365cf improved exn_message;
wenzelm
parents: 15633
diff changeset
   513
fun exn_message exn = exn_msg (! debug) exn;
5828
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   514
15531
08c8dad8e399 Deleted Library.option type.
skalberg
parents: 15519
diff changeset
   515
fun print_exn NONE = ()
08c8dad8e399 Deleted Library.option type.
skalberg
parents: 15519
diff changeset
   516
  | print_exn (SOME (exn, s)) = error_msg (cat_lines [exn_message exn, s]);
5828
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   517
15668
53c049a365cf improved exn_message;
wenzelm
parents: 15633
diff changeset
   518
end;
53c049a365cf improved exn_message;
wenzelm
parents: 15633
diff changeset
   519
5828
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   520
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   521
(* apply transitions *)
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   522
6664
f679ddd1ddd8 cleaned comments;
wenzelm
parents: 6244
diff changeset
   523
local
f679ddd1ddd8 cleaned comments;
wenzelm
parents: 6244
diff changeset
   524
9010
ce78dc5e1a73 Toplevel.no_timing;
wenzelm
parents: 8999
diff changeset
   525
fun app int (tr as Transition {trans, int_only, print, no_timing, ...}) state =
5828
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   526
  let
16682
wenzelm
parents: 16658
diff changeset
   527
    val _ = conditional (not int andalso int_only) (fn () =>
wenzelm
parents: 16658
diff changeset
   528
      warning (command_msg "Interactive-only " tr));
wenzelm
parents: 16658
diff changeset
   529
wenzelm
parents: 16658
diff changeset
   530
    fun do_timing f x = (info (command_msg "" tr); timeap f x);
wenzelm
parents: 16658
diff changeset
   531
    fun do_profiling f x = profile (! profiling) f x;
wenzelm
parents: 16658
diff changeset
   532
6689
wenzelm
parents: 6664
diff changeset
   533
    val (result, opt_exn) =
16729
24c5c94aa967 debug: exception_trace;
wenzelm
parents: 16682
diff changeset
   534
       state |> (apply_trans int trans
24c5c94aa967 debug: exception_trace;
wenzelm
parents: 16682
diff changeset
   535
        |> (if ! profiling > 0 then do_profiling else I)
24c5c94aa967 debug: exception_trace;
wenzelm
parents: 16682
diff changeset
   536
        |> (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
   537
    val _ = conditional (int andalso not (! quiet) andalso
81e687c63e29 added print': print depending on print_mode;
wenzelm
parents: 16490
diff changeset
   538
        exists (fn m => m mem_string print) ("" :: ! print_mode))
81e687c63e29 added print': print depending on print_mode;
wenzelm
parents: 16490
diff changeset
   539
      (fn () => print_state false result);
15570
8d8c70b41bab Move towards standard functions.
skalberg
parents: 15549
diff changeset
   540
  in (result, Option.map (fn UNDEF => type_error tr state | exn => exn) opt_exn) end;
6664
f679ddd1ddd8 cleaned comments;
wenzelm
parents: 6244
diff changeset
   541
f679ddd1ddd8 cleaned comments;
wenzelm
parents: 6244
diff changeset
   542
in
5828
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   543
6689
wenzelm
parents: 6664
diff changeset
   544
fun apply int tr st =
6965
a766de752996 fixed interrupts (eliminated races);
wenzelm
parents: 6689
diff changeset
   545
  (case app int tr st of
15531
08c8dad8e399 Deleted Library.option type.
skalberg
parents: 15519
diff changeset
   546
    (_, SOME TERMINATE) => NONE
08c8dad8e399 Deleted Library.option type.
skalberg
parents: 15519
diff changeset
   547
  | (_, SOME RESTART) => SOME (toplevel, NONE)
08c8dad8e399 Deleted Library.option type.
skalberg
parents: 15519
diff changeset
   548
  | (state', SOME (EXCURSION_FAIL exn_info)) => SOME (state', SOME exn_info)
08c8dad8e399 Deleted Library.option type.
skalberg
parents: 15519
diff changeset
   549
  | (state', SOME exn) => SOME (state', SOME (exn, at_command tr))
08c8dad8e399 Deleted Library.option type.
skalberg
parents: 15519
diff changeset
   550
  | (state', NONE) => SOME (state', NONE));
6664
f679ddd1ddd8 cleaned comments;
wenzelm
parents: 6244
diff changeset
   551
f679ddd1ddd8 cleaned comments;
wenzelm
parents: 6244
diff changeset
   552
end;
5828
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   553
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   554
17076
c7effdf2e2e2 state: body context;
wenzelm
parents: 16815
diff changeset
   555
(* excursion: toplevel -- apply transformers/presentation -- toplevel *)
5828
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   556
6664
f679ddd1ddd8 cleaned comments;
wenzelm
parents: 6244
diff changeset
   557
local
f679ddd1ddd8 cleaned comments;
wenzelm
parents: 6244
diff changeset
   558
5828
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   559
fun excur [] x = x
17076
c7effdf2e2e2 state: body context;
wenzelm
parents: 16815
diff changeset
   560
  | excur ((tr, pr) :: trs) (st, res) =
9134
b38e94631f19 excursion_result;
wenzelm
parents: 9010
diff changeset
   561
      (case apply false tr st of
15531
08c8dad8e399 Deleted Library.option type.
skalberg
parents: 15519
diff changeset
   562
        SOME (st', NONE) =>
17076
c7effdf2e2e2 state: body context;
wenzelm
parents: 16815
diff changeset
   563
          excur trs (st', transform_error (fn () => pr st st' res) () handle exn =>
10324
498999fd7c37 tuned msg;
wenzelm
parents: 9512
diff changeset
   564
            raise EXCURSION_FAIL (exn, "Presentation failed\n" ^ at_command tr))
15531
08c8dad8e399 Deleted Library.option type.
skalberg
parents: 15519
diff changeset
   565
      | SOME (st', SOME exn_info) => raise EXCURSION_FAIL exn_info
08c8dad8e399 Deleted Library.option type.
skalberg
parents: 15519
diff changeset
   566
      | NONE => raise EXCURSION_FAIL (TERMINATE, at_command tr));
5828
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   567
17076
c7effdf2e2e2 state: body context;
wenzelm
parents: 16815
diff changeset
   568
fun no_pr _ _ _ = ();
c7effdf2e2e2 state: body context;
wenzelm
parents: 16815
diff changeset
   569
6664
f679ddd1ddd8 cleaned comments;
wenzelm
parents: 6244
diff changeset
   570
in
f679ddd1ddd8 cleaned comments;
wenzelm
parents: 6244
diff changeset
   571
17076
c7effdf2e2e2 state: body context;
wenzelm
parents: 16815
diff changeset
   572
fun present_excursion trs res =
15531
08c8dad8e399 Deleted Library.option type.
skalberg
parents: 15519
diff changeset
   573
  (case excur trs (State NONE, res) of
08c8dad8e399 Deleted Library.option type.
skalberg
parents: 15519
diff changeset
   574
    (State NONE, res') => res'
9134
b38e94631f19 excursion_result;
wenzelm
parents: 9010
diff changeset
   575
  | _ => raise ERROR_MESSAGE "Unfinished development at end of input")
b38e94631f19 excursion_result;
wenzelm
parents: 9010
diff changeset
   576
  handle exn => error (exn_message exn);
b38e94631f19 excursion_result;
wenzelm
parents: 9010
diff changeset
   577
17076
c7effdf2e2e2 state: body context;
wenzelm
parents: 16815
diff changeset
   578
fun excursion trs = present_excursion (map (rpair no_pr) trs) ();
7062
e992884b256d Toplevel.excursion_error;
wenzelm
parents: 7022
diff changeset
   579
6664
f679ddd1ddd8 cleaned comments;
wenzelm
parents: 6244
diff changeset
   580
end;
f679ddd1ddd8 cleaned comments;
wenzelm
parents: 6244
diff changeset
   581
5828
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   582
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   583
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   584
(** interactive transformations **)
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   585
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   586
(* the global state reference *)
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   587
15531
08c8dad8e399 Deleted Library.option type.
skalberg
parents: 15519
diff changeset
   588
val global_state = ref (toplevel, NONE: (exn * string) option);
5828
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   589
15531
08c8dad8e399 Deleted Library.option type.
skalberg
parents: 15519
diff changeset
   590
fun set_state state = global_state := (state, NONE);
5828
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   591
fun get_state () = fst (! global_state);
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   592
fun exn () = snd (! global_state);
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   593
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   594
6965
a766de752996 fixed interrupts (eliminated races);
wenzelm
parents: 6689
diff changeset
   595
(* the Isar source of transitions *)
a766de752996 fixed interrupts (eliminated races);
wenzelm
parents: 6689
diff changeset
   596
14091
ad6ba9c55190 A patch by david aspinall
nipkow
parents: 13486
diff changeset
   597
type 'a isar =
6965
a766de752996 fixed interrupts (eliminated races);
wenzelm
parents: 6689
diff changeset
   598
  (transition, (transition option,
12881
eeb36b66480e ANTIQUOTE_FAIL;
wenzelm
parents: 12423
diff changeset
   599
    (OuterLex.token, (OuterLex.token option, (OuterLex.token, (OuterLex.token,
14091
ad6ba9c55190 A patch by david aspinall
nipkow
parents: 13486
diff changeset
   600
      Position.T * (Symbol.symbol, (string, 'a) Source.source) Source.source)
12881
eeb36b66480e ANTIQUOTE_FAIL;
wenzelm
parents: 12423
diff changeset
   601
          Source.source) Source.source) Source.source) Source.source) Source.source) Source.source;
6965
a766de752996 fixed interrupts (eliminated races);
wenzelm
parents: 6689
diff changeset
   602
a766de752996 fixed interrupts (eliminated races);
wenzelm
parents: 6689
diff changeset
   603
5828
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   604
(* apply transformers to global state *)
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   605
14985
fefcf6cd858a added >>> : transition list -> unit;
wenzelm
parents: 14981
diff changeset
   606
nonfix >> >>>;
5828
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   607
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   608
fun >> tr =
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   609
  (case apply true tr (get_state ()) of
15531
08c8dad8e399 Deleted Library.option type.
skalberg
parents: 15519
diff changeset
   610
    NONE => false
08c8dad8e399 Deleted Library.option type.
skalberg
parents: 15519
diff changeset
   611
  | SOME (state', exn_info) =>
5828
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   612
      (global_state := (state', exn_info);
16729
24c5c94aa967 debug: exception_trace;
wenzelm
parents: 16682
diff changeset
   613
        print_exn exn_info;
5828
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   614
        true));
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   615
14985
fefcf6cd858a added >>> : transition list -> unit;
wenzelm
parents: 14981
diff changeset
   616
fun >>> [] = ()
fefcf6cd858a added >>> : transition list -> unit;
wenzelm
parents: 14981
diff changeset
   617
  | >>> (tr :: trs) = if >> tr then >>> trs else ();
fefcf6cd858a added >>> : transition list -> unit;
wenzelm
parents: 14981
diff changeset
   618
7602
2c0f407f80ce avoid interrupts of read loop;
wenzelm
parents: 7501
diff changeset
   619
(*Note: this is for Poly/ML only, we really do not intend to exhibit
2c0f407f80ce avoid interrupts of read loop;
wenzelm
parents: 7501
diff changeset
   620
  interrupts here*)
15531
08c8dad8e399 Deleted Library.option type.
skalberg
parents: 15519
diff changeset
   621
fun get_interrupt src = SOME (Source.get_single src) handle Interrupt => NONE;
7602
2c0f407f80ce avoid interrupts of read loop;
wenzelm
parents: 7501
diff changeset
   622
5828
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   623
fun raw_loop src =
7602
2c0f407f80ce avoid interrupts of read loop;
wenzelm
parents: 7501
diff changeset
   624
  (case get_interrupt (Source.set_prompt (prompt_state (get_state ())) src) of
15531
08c8dad8e399 Deleted Library.option type.
skalberg
parents: 15519
diff changeset
   625
    NONE => (writeln "\nInterrupt."; raw_loop src)
08c8dad8e399 Deleted Library.option type.
skalberg
parents: 15519
diff changeset
   626
  | SOME NONE => ()
08c8dad8e399 Deleted Library.option type.
skalberg
parents: 15519
diff changeset
   627
  | SOME (SOME (tr, src')) => if >> tr then raw_loop src' else ());
5828
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   628
12987
b6db96775e52 use ignore_interrupt, raise_interrupt;
wenzelm
parents: 12881
diff changeset
   629
fun loop src = ignore_interrupt raw_loop src;
5828
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   630
1feeadaad6a9 The Isabelle/Isar toplevel.
wenzelm
parents:
diff changeset
   631
end;