author | wenzelm |
Sat, 20 Jan 2007 14:09:20 +0100 | |
changeset 22135 | cd3c167e6f19 |
parent 22095 | 07875394618e |
child 22588 | 4a859d13ef83 |
permissions | -rw-r--r-- |
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(* Title: Pure/Isar/toplevel.ML |
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ID: $Id$ |
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Author: Markus Wenzel, TU Muenchen |
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The Isabelle/Isar toplevel. |
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*) |
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signature TOPLEVEL = |
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sig |
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exception UNDEF |
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type generic_theory |
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type node |
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val theory_node: node -> generic_theory option |
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val proof_node: node -> ProofHistory.T option |
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val cases_node: (generic_theory -> 'a) -> (Proof.state -> 'a) -> node -> 'a |
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val presentation_context: node option -> xstring option -> Proof.context |
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type state |
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val is_toplevel: state -> bool |
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val is_theory: state -> bool |
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val is_proof: state -> bool |
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val level: state -> int |
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val node_history_of: state -> node History.T |
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val node_of: state -> node |
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val node_case: (generic_theory -> 'a) -> (Proof.state -> 'a) -> state -> 'a |
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val context_of: state -> Proof.context |
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val generic_theory_of: state -> generic_theory |
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val theory_of: state -> theory |
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val proof_of: state -> Proof.state |
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val proof_position_of: state -> int |
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val enter_proof_body: state -> Proof.state |
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val 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_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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type transition |
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val undo_limit: bool -> int option |
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val empty: transition |
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val name_of: transition -> string |
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val source_of: transition -> OuterLex.token list option |
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val name: string -> transition -> transition |
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val position: Position.T -> transition -> transition |
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val source: OuterLex.token list -> transition -> transition |
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val interactive: bool -> transition -> transition |
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val print: transition -> transition |
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val print': string -> transition -> transition |
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val three_buffersN: string |
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val print3: transition -> transition |
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val no_timing: transition -> transition |
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val init_theory: (bool -> theory) -> (theory -> unit) -> (theory -> unit) -> |
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transition -> transition |
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val init_empty: (state -> unit) -> transition -> transition |
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val exit: transition -> transition |
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val undo_exit: transition -> transition |
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val kill: transition -> transition |
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val history: (node History.T -> node History.T) -> transition -> transition |
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val keep: (state -> unit) -> transition -> transition |
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val keep': (bool -> state -> unit) -> transition -> transition |
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val imperative: (unit -> unit) -> transition -> transition |
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val theory: (theory -> theory) -> transition -> transition |
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val theory': (bool -> theory -> theory) -> transition -> transition |
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val begin_local_theory: bool -> (theory -> local_theory) -> transition -> transition |
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val end_local_theory: transition -> transition |
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val local_theory: xstring option -> (local_theory -> local_theory) -> transition -> transition |
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val present_local_theory: xstring option -> (bool -> node -> unit) -> transition -> transition |
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val local_theory_to_proof: xstring option -> (local_theory -> Proof.state) -> |
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transition -> transition |
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val theory_to_proof: (theory -> Proof.state) -> transition -> transition |
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val end_proof: (bool -> Proof.state -> Proof.context) -> transition -> transition |
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val forget_proof: transition -> transition |
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val present_proof: (bool -> node -> unit) -> transition -> transition |
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val proofs': (bool -> Proof.state -> Proof.state Seq.seq) -> transition -> transition |
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val proof': (bool -> Proof.state -> Proof.state) -> transition -> transition |
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val proofs: (Proof.state -> Proof.state Seq.seq) -> transition -> transition |
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val proof: (Proof.state -> Proof.state) -> transition -> transition |
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val actual_proof: (ProofHistory.T -> ProofHistory.T) -> transition -> transition |
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val skip_proof: (int History.T -> int History.T) -> transition -> transition |
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val skip_proof_to_theory: (int -> bool) -> transition -> transition |
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val unknown_theory: transition -> transition |
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val unknown_proof: transition -> transition |
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val unknown_context: transition -> transition |
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val present_excursion: (transition * (state -> state -> 'a -> 'a)) list -> 'a -> 'a |
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val excursion: transition list -> unit |
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val set_state: state -> unit |
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val get_state: unit -> state |
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val exn: unit -> (exn * string) option |
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val >> : transition -> bool |
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val >>> : transition list -> unit |
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val init_state: unit -> unit |
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type 'a isar |
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val loop: 'a isar -> unit |
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end; |
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structure Toplevel: TOPLEVEL = |
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struct |
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(** toplevel state **) |
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exception UNDEF; |
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(* local theory wrappers *) |
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type generic_theory = Context.generic; (*theory or local_theory*) |
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val loc_init = TheoryTarget.init; |
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val loc_exit = ProofContext.theory_of o LocalTheory.exit; |
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fun loc_begin loc (Context.Theory thy) = loc_init loc thy |
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| loc_begin NONE (Context.Proof lthy) = lthy |
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| loc_begin loc (Context.Proof lthy) = loc_init loc (loc_exit lthy); |
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fun loc_finish _ (Context.Theory _) = Context.Theory o loc_exit |
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| loc_finish NONE (Context.Proof _) = Context.Proof o LocalTheory.restore |
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| loc_finish (SOME _) (Context.Proof lthy) = Context.Proof o LocalTheory.reinit lthy o loc_exit; |
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(* datatype node *) |
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datatype node = |
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Theory of generic_theory * Proof.context option | (*theory with presentation context*) |
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Proof of ProofHistory.T * ((Proof.context -> generic_theory) * generic_theory) | |
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(*history of proof states, finish, original theory*) |
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SkipProof of int History.T * (generic_theory * generic_theory); |
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(*history of proof depths, resulting theory, original theory*) |
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val the_global_theory = fn Theory (Context.Theory thy, _) => thy | _ => raise UNDEF; |
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val theory_node = fn Theory (gthy, _) => SOME gthy | _ => NONE; |
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val proof_node = fn Proof (prf, _) => SOME prf | _ => NONE; |
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fun cases_node f _ (Theory (gthy, _)) = f gthy |
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| cases_node _ g (Proof (prf, _)) = g (ProofHistory.current prf) |
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| cases_node f _ (SkipProof (_, (gthy, _))) = f gthy; |
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fun presentation_context (SOME (Theory (_, SOME ctxt))) NONE = ctxt |
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| presentation_context (SOME node) NONE = cases_node Context.proof_of Proof.context_of node |
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| presentation_context (SOME node) (SOME loc) = |
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loc_init (SOME loc) (cases_node Context.theory_of Proof.theory_of node) |
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| presentation_context NONE _ = raise UNDEF; |
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(* datatype state *) |
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type state_info = node History.T * ((theory -> unit) * (theory -> unit)); |
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datatype state = |
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Toplevel of state_info option | (*outer toplevel, leftover end state*) |
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State of state_info; |
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val toplevel = Toplevel NONE; |
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fun is_toplevel (Toplevel _) = true |
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| is_toplevel _ = false; |
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fun level (Toplevel _) = 0 |
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| level (State (node, _)) = |
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(case History.current node of |
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Theory _ => 0 |
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| Proof (prf, _) => Proof.level (ProofHistory.current prf) |
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| SkipProof (h, _) => History.current h + 1); (*different notion of proof depth!*) |
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fun str_of_state (Toplevel _) = "at top level" |
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| str_of_state (State (node, _)) = |
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(case History.current node of |
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Theory (Context.Theory _, _) => "in theory mode" |
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| Theory (Context.Proof _, _) => "in local theory mode" |
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| Proof _ => "in proof mode" |
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| SkipProof _ => "in skipped proof mode"); |
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(* top node *) |
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fun node_history_of (Toplevel _) = raise UNDEF |
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| node_history_of (State (node, _)) = node; |
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val node_of = History.current o node_history_of; |
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fun is_theory state = not (is_toplevel state) andalso is_some (theory_node (node_of state)); |
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fun is_proof state = not (is_toplevel state) andalso is_some (proof_node (node_of state)); |
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fun node_case f g state = cases_node f g (node_of state); |
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val context_of = node_case Context.proof_of Proof.context_of; |
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val generic_theory_of = node_case I (Context.Proof o Proof.context_of); |
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val theory_of = node_case Context.theory_of Proof.theory_of; |
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val proof_of = node_case (fn _ => raise UNDEF) I; |
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fun proof_position_of state = |
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(case node_of state of |
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Proof (prf, _) => ProofHistory.position prf |
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| _ => raise UNDEF); |
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val enter_proof_body = node_case (Proof.init o Context.proof_of) Proof.enter_forward; |
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(* 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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val pretty_context = LocalTheory.pretty o Context.cases (loc_init NONE) I; |
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fun pretty_state_context state = |
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(case try (node_case I (Context.Proof o Proof.context_of)) state of |
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NONE => [] |
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| SOME gthy => pretty_context gthy); |
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fun pretty_node prf_only (Theory (gthy, _)) = if prf_only then [] else pretty_context gthy |
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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_fn = ref print_state_default; |
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fun print_state prf_only state = ! print_state_fn prf_only state; |
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(** toplevel transitions **) |
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val quiet = ref false; |
22135 | 253 |
val debug = Output.debugging; |
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val interact = ref false; |
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val timing = Output.timing; |
256 |
val profiling = ref 0; |
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val skip_proofs = ref false; |
16682 | 258 |
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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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268 |
|
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fun with_context f xs = |
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(case ML_Context.get_context () of NONE => [] |
22089 | 271 |
| SOME context => map (f (Context.proof_of context)) xs); |
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|
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273 |
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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276 |
|
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277 |
fun exn_msg _ TERMINATE = "Exit." |
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278 |
| exn_msg _ RESTART = "Restart." |
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279 |
| 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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288 |
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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296 |
| exn_msg true (TYPE (msg, Ts, ts)) = raised "TYPE" (msg :: |
22089 | 297 |
with_context ProofContext.string_of_typ Ts @ with_context ProofContext.string_of_term ts) |
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| exn_msg false (TERM (msg, _)) = raised "TERM" [msg] |
22089 | 299 |
| exn_msg true (TERM (msg, ts)) = |
300 |
raised "TERM" (msg :: with_context ProofContext.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)) = |
22089 | 303 |
raised ("THM " ^ string_of_int i) (msg :: with_context ProofContext.string_of_thm thms) |
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304 |
| exn_msg _ Option.Option = raised "Option" [] |
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305 |
| exn_msg _ Library.UnequalLengths = raised "UnequalLengths" [] |
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306 |
| exn_msg _ Empty = raised "Empty" [] |
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307 |
| 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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310 |
and fail_msg detailed kind ((name, pos), exn) = |
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311 |
"Error in " ^ kind ^ " " ^ quote name ^ Position.str_of pos ^ ":\n" ^ exn_msg detailed exn; |
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|
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313 |
in |
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314 |
|
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315 |
fun exn_message exn = exn_msg (! debug) exn; |
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316 |
|
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317 |
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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319 |
|
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320 |
end; |
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321 |
|
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322 |
|
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323 |
(* controlled execution *) |
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324 |
|
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325 |
local |
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|
326 |
|
18685 | 327 |
fun debugging f x = |
328 |
if ! debug then |
|
329 |
setmp Library.do_transform_failure false |
|
330 |
exception_trace (fn () => f x) |
|
331 |
else f x; |
|
332 |
||
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333 |
fun interruptible f x = |
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334 |
let val y = ref x |
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|
335 |
in raise_interrupt (fn () => y := f x) (); ! y end; |
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|
336 |
|
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337 |
in |
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|
338 |
|
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339 |
fun controlled_execution f = |
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340 |
f |
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341 |
|> debugging |
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342 |
|> interruptible |
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|> setmp Output.do_toplevel_errors false; |
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344 |
|
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345 |
fun program f = |
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346 |
Output.ML_errors (fn () => debugging f () handle exn => error (exn_message exn)) (); |
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|
347 |
|
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|
348 |
end; |
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349 |
|
5828 | 350 |
|
16815 | 351 |
(* node transactions and recovery from stale theories *) |
6689 | 352 |
|
16815 | 353 |
(*NB: proof commands should be non-destructive!*) |
7022 | 354 |
|
6689 | 355 |
local |
356 |
||
16452 | 357 |
fun is_stale state = Context.is_stale (theory_of state) handle UNDEF => false; |
6689 | 358 |
|
18685 | 359 |
val stale_theory = ERROR "Stale theory encountered after succesful execution!"; |
16815 | 360 |
|
21177 | 361 |
fun map_theory f = History.map |
362 |
(fn Theory (gthy, _) => Theory (Context.mapping f (LocalTheory.raw_theory f) gthy, NONE) |
|
363 |
| node => node); |
|
6689 | 364 |
|
15531 | 365 |
fun return (result, NONE) = result |
366 |
| return (result, SOME exn) = raise FAILURE (result, exn); |
|
7022 | 367 |
|
6689 | 368 |
in |
369 |
||
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370 |
fun transaction hist f (node, term) = |
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|
371 |
let |
21177 | 372 |
val cont_node = map_theory Theory.checkpoint node; |
373 |
val back_node = map_theory Theory.copy cont_node; |
|
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374 |
fun state nd = State (nd, term); |
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375 |
fun normal_state nd = (state nd, NONE); |
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376 |
fun error_state nd exn = (state nd, SOME exn); |
6689 | 377 |
|
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|
378 |
val (result, err) = |
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|
379 |
cont_node |
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380 |
|> (f |
21177 | 381 |
|> (if hist then History.apply' (History.current back_node) else History.map) |
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382 |
|> controlled_execution) |
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|
383 |
|> normal_state |
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|
384 |
handle exn => error_state cont_node exn; |
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|
385 |
in |
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|
386 |
if is_stale result |
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|
387 |
then return (error_state back_node (the_default stale_theory err)) |
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|
388 |
else return (result, err) |
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|
389 |
end; |
6689 | 390 |
|
391 |
end; |
|
392 |
||
393 |
||
394 |
(* primitive transitions *) |
|
395 |
||
18563 | 396 |
(*Note: Recovery from stale theories is provided only for theory-level |
18589 | 397 |
operations via Transaction. Other node or state operations should |
398 |
not touch theories at all. Interrupts are enabled only for Keep and |
|
399 |
Transaction.*) |
|
5828 | 400 |
|
401 |
datatype trans = |
|
22056 | 402 |
Init of (bool -> theory) * ((theory -> unit) * (theory -> unit)) | |
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|
403 |
(*init node; with exit/kill operation*) |
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|
404 |
InitEmpty of state -> unit | (*init empty toplevel*) |
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|
405 |
Exit | (*conclude node -- deferred until init*) |
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|
406 |
UndoExit | (*continue after conclusion*) |
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|
407 |
Kill | (*abort node*) |
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|
408 |
History of node History.T -> node History.T | (*history operation (undo etc.)*) |
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|
409 |
Keep of bool -> state -> unit | (*peek at state*) |
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|
410 |
Transaction of bool * (bool -> node -> node); (*node transaction*) |
6689 | 411 |
|
15531 | 412 |
fun undo_limit int = if int then NONE else SOME 0; |
6689 | 413 |
|
22056 | 414 |
fun safe_exit (Toplevel (SOME (node, (exit, _)))) = |
415 |
(case try the_global_theory (History.current node) of |
|
416 |
SOME thy => exit thy |
|
417 |
| NONE => ()) |
|
418 |
| safe_exit _ = (); |
|
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|
419 |
|
6689 | 420 |
local |
5828 | 421 |
|
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|
422 |
fun keep_state int f = controlled_execution (fn x => tap (f int) x); |
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|
423 |
|
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|
424 |
fun apply_tr int (Init (f, term)) (state as Toplevel _) = |
22056 | 425 |
let val node = Theory (Context.Theory (f int), NONE) |
426 |
in safe_exit state; State (History.init (undo_limit int) node, term) end |
|
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|
427 |
| apply_tr int (InitEmpty f) state = |
22056 | 428 |
(keep_state int (K f) state; safe_exit state; toplevel) |
429 |
| apply_tr _ Exit (State (node, term)) = |
|
430 |
(the_global_theory (History.current node); Toplevel (SOME (node, term))) |
|
431 |
| apply_tr _ UndoExit (Toplevel (SOME state_info)) = State state_info |
|
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|
432 |
| apply_tr _ Kill (State (node, (_, kill))) = |
22056 | 433 |
(kill (the_global_theory (History.current node)); toplevel) |
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|
434 |
| apply_tr _ (History f) (State (node, term)) = State (f node, term) |
9dfd1ca4c0a0
refined notion of empty toplevel, admits undo of 'end';
wenzelm
parents:
21861
diff
changeset
|
435 |
| apply_tr int (Keep f) state = keep_state int f state |
9dfd1ca4c0a0
refined notion of empty toplevel, admits undo of 'end';
wenzelm
parents:
21861
diff
changeset
|
436 |
| apply_tr int (Transaction (hist, f)) (State state) = |
9dfd1ca4c0a0
refined notion of empty toplevel, admits undo of 'end';
wenzelm
parents:
21861
diff
changeset
|
437 |
transaction hist (fn x => f int x) state |
9dfd1ca4c0a0
refined notion of empty toplevel, admits undo of 'end';
wenzelm
parents:
21861
diff
changeset
|
438 |
| apply_tr _ _ _ = raise UNDEF; |
5828 | 439 |
|
6689 | 440 |
fun apply_union _ [] state = raise FAILURE (state, UNDEF) |
441 |
| apply_union int (tr :: trs) state = |
|
18685 | 442 |
apply_tr int tr state |
6689 | 443 |
handle UNDEF => apply_union int trs state |
444 |
| FAILURE (alt_state, UNDEF) => apply_union int trs alt_state |
|
445 |
| exn as FAILURE _ => raise exn |
|
446 |
| exn => raise FAILURE (state, exn); |
|
447 |
||
448 |
in |
|
449 |
||
15531 | 450 |
fun apply_trans int trs state = (apply_union int trs state, NONE) |
451 |
handle FAILURE (alt_state, exn) => (alt_state, SOME exn) | exn => (state, SOME exn); |
|
6689 | 452 |
|
453 |
end; |
|
5828 | 454 |
|
455 |
||
456 |
(* datatype transition *) |
|
457 |
||
458 |
datatype transition = Transition of |
|
16815 | 459 |
{name: string, (*command name*) |
460 |
pos: Position.T, (*source position*) |
|
461 |
source: OuterLex.token list option, (*source text*) |
|
462 |
int_only: bool, (*interactive-only*) |
|
463 |
print: string list, (*print modes (union)*) |
|
464 |
no_timing: bool, (*suppress timing*) |
|
465 |
trans: trans list}; (*primitive transitions (union)*) |
|
5828 | 466 |
|
14923 | 467 |
fun make_transition (name, pos, source, int_only, print, no_timing, trans) = |
468 |
Transition {name = name, pos = pos, source = source, |
|
469 |
int_only = int_only, print = print, no_timing = no_timing, trans = trans}; |
|
5828 | 470 |
|
14923 | 471 |
fun map_transition f (Transition {name, pos, source, int_only, print, no_timing, trans}) = |
472 |
make_transition (f (name, pos, source, int_only, print, no_timing, trans)); |
|
5828 | 473 |
|
16607 | 474 |
val empty = make_transition ("<unknown>", Position.none, NONE, false, [], false, []); |
14923 | 475 |
|
476 |
fun name_of (Transition {name, ...}) = name; |
|
477 |
fun source_of (Transition {source, ...}) = source; |
|
5828 | 478 |
|
479 |
||
480 |
(* diagnostics *) |
|
481 |
||
482 |
fun str_of_transition (Transition {name, pos, ...}) = quote name ^ Position.str_of pos; |
|
483 |
||
484 |
fun command_msg msg tr = msg ^ "command " ^ str_of_transition tr; |
|
485 |
fun at_command tr = command_msg "At " tr ^ "."; |
|
486 |
||
487 |
fun type_error tr state = |
|
18685 | 488 |
ERROR (command_msg "Illegal application of " tr ^ " " ^ str_of_state state); |
5828 | 489 |
|
490 |
||
491 |
(* modify transitions *) |
|
492 |
||
14923 | 493 |
fun name nm = map_transition (fn (_, pos, source, int_only, print, no_timing, trans) => |
494 |
(nm, pos, source, int_only, print, no_timing, trans)); |
|
5828 | 495 |
|
14923 | 496 |
fun position pos = map_transition (fn (name, _, source, int_only, print, no_timing, trans) => |
497 |
(name, pos, source, int_only, print, no_timing, trans)); |
|
9010 | 498 |
|
14923 | 499 |
fun source src = map_transition (fn (name, pos, _, int_only, print, no_timing, trans) => |
15531 | 500 |
(name, pos, SOME src, int_only, print, no_timing, trans)); |
5828 | 501 |
|
14923 | 502 |
fun interactive int_only = map_transition (fn (name, pos, source, _, print, no_timing, trans) => |
503 |
(name, pos, source, int_only, print, no_timing, trans)); |
|
504 |
||
17363 | 505 |
val no_timing = map_transition (fn (name, pos, source, int_only, print, _, trans) => |
506 |
(name, pos, source, int_only, print, true, trans)); |
|
507 |
||
508 |
fun add_trans tr = map_transition (fn (name, pos, source, int_only, print, no_timing, trans) => |
|
509 |
(name, pos, source, int_only, print, no_timing, trans @ [tr])); |
|
510 |
||
16607 | 511 |
fun print' mode = map_transition (fn (name, pos, source, int_only, print, no_timing, trans) => |
512 |
(name, pos, source, int_only, insert (op =) mode print, no_timing, trans)); |
|
513 |
||
514 |
val print = print' ""; |
|
5828 | 515 |
|
17363 | 516 |
val three_buffersN = "three_buffers"; |
517 |
val print3 = print' three_buffersN; |
|
5828 | 518 |
|
519 |
||
21007 | 520 |
(* basic transitions *) |
5828 | 521 |
|
22056 | 522 |
fun init_theory f exit kill = add_trans (Init (f, (exit, kill))); |
21958
9dfd1ca4c0a0
refined notion of empty toplevel, admits undo of 'end';
wenzelm
parents:
21861
diff
changeset
|
523 |
val init_empty = add_trans o InitEmpty; |
6689 | 524 |
val exit = add_trans Exit; |
21958
9dfd1ca4c0a0
refined notion of empty toplevel, admits undo of 'end';
wenzelm
parents:
21861
diff
changeset
|
525 |
val undo_exit = add_trans UndoExit; |
6689 | 526 |
val kill = add_trans Kill; |
20128
8f0e07d7cf92
keep/transaction: unified execution model (with debugging etc.);
wenzelm
parents:
19996
diff
changeset
|
527 |
val history = add_trans o History; |
7612 | 528 |
val keep' = add_trans o Keep; |
18592
451d622bb4a9
transactions now always see quasi-functional intermediate checkpoint;
wenzelm
parents:
18589
diff
changeset
|
529 |
fun map_current f = add_trans (Transaction (false, f)); |
451d622bb4a9
transactions now always see quasi-functional intermediate checkpoint;
wenzelm
parents:
18589
diff
changeset
|
530 |
fun app_current f = add_trans (Transaction (true, f)); |
5828 | 531 |
|
7612 | 532 |
fun keep f = add_trans (Keep (fn _ => f)); |
5828 | 533 |
fun imperative f = keep (fn _ => f ()); |
534 |
||
21007 | 535 |
val unknown_theory = imperative (fn () => warning "Unknown theory context"); |
536 |
val unknown_proof = imperative (fn () => warning "Unknown proof context"); |
|
537 |
val unknown_context = imperative (fn () => warning "Unknown context"); |
|
15668 | 538 |
|
21007 | 539 |
|
540 |
(* theory transitions *) |
|
15668 | 541 |
|
20963
a7fd8f05a2be
added type global_theory -- theory or local_theory;
wenzelm
parents:
20928
diff
changeset
|
542 |
fun theory' f = app_current (fn int => |
a7fd8f05a2be
added type global_theory -- theory or local_theory;
wenzelm
parents:
20928
diff
changeset
|
543 |
(fn Theory (Context.Theory thy, _) => Theory (Context.Theory (f int thy), NONE) |
a7fd8f05a2be
added type global_theory -- theory or local_theory;
wenzelm
parents:
20928
diff
changeset
|
544 |
| _ => raise UNDEF)); |
a7fd8f05a2be
added type global_theory -- theory or local_theory;
wenzelm
parents:
20928
diff
changeset
|
545 |
|
a7fd8f05a2be
added type global_theory -- theory or local_theory;
wenzelm
parents:
20928
diff
changeset
|
546 |
fun theory f = theory' (K f); |
a7fd8f05a2be
added type global_theory -- theory or local_theory;
wenzelm
parents:
20928
diff
changeset
|
547 |
|
21294 | 548 |
fun begin_local_theory begin f = app_current (fn _ => |
20963
a7fd8f05a2be
added type global_theory -- theory or local_theory;
wenzelm
parents:
20928
diff
changeset
|
549 |
(fn Theory (Context.Theory thy, _) => |
a7fd8f05a2be
added type global_theory -- theory or local_theory;
wenzelm
parents:
20928
diff
changeset
|
550 |
let |
20985 | 551 |
val lthy = f thy; |
21294 | 552 |
val gthy = if begin then Context.Proof lthy else Context.Theory (loc_exit lthy); |
553 |
in Theory (gthy, SOME lthy) end |
|
20963
a7fd8f05a2be
added type global_theory -- theory or local_theory;
wenzelm
parents:
20928
diff
changeset
|
554 |
| _ => raise UNDEF)); |
17076 | 555 |
|
21294 | 556 |
val end_local_theory = app_current (fn _ => |
557 |
(fn Theory (Context.Proof lthy, _) => Theory (Context.Theory (loc_exit lthy), SOME lthy) |
|
21007 | 558 |
| _ => raise UNDEF)); |
559 |
||
560 |
local |
|
561 |
||
20963
a7fd8f05a2be
added type global_theory -- theory or local_theory;
wenzelm
parents:
20928
diff
changeset
|
562 |
fun local_theory_presentation loc f g = app_current (fn int => |
21294 | 563 |
(fn Theory (gthy, _) => |
564 |
let |
|
565 |
val finish = loc_finish loc gthy; |
|
566 |
val lthy' = f (loc_begin loc gthy); |
|
567 |
in Theory (finish lthy', SOME lthy') end |
|
20963
a7fd8f05a2be
added type global_theory -- theory or local_theory;
wenzelm
parents:
20928
diff
changeset
|
568 |
| _ => raise UNDEF) #> tap (g int)); |
15668 | 569 |
|
21007 | 570 |
in |
571 |
||
20963
a7fd8f05a2be
added type global_theory -- theory or local_theory;
wenzelm
parents:
20928
diff
changeset
|
572 |
fun local_theory loc f = local_theory_presentation loc f (K I); |
a7fd8f05a2be
added type global_theory -- theory or local_theory;
wenzelm
parents:
20928
diff
changeset
|
573 |
fun present_local_theory loc g = local_theory_presentation loc I g; |
18955 | 574 |
|
21007 | 575 |
end; |
576 |
||
577 |
||
578 |
(* proof transitions *) |
|
579 |
||
580 |
fun end_proof f = map_current (fn int => |
|
581 |
(fn Proof (prf, (finish, orig_gthy)) => |
|
582 |
let val state = ProofHistory.current prf in |
|
583 |
if can (Proof.assert_bottom true) state then |
|
584 |
let |
|
585 |
val ctxt' = f int state; |
|
586 |
val gthy' = finish ctxt'; |
|
587 |
in Theory (gthy', SOME ctxt') end |
|
588 |
else raise UNDEF |
|
589 |
end |
|
590 |
| SkipProof (h, (gthy, _)) => |
|
591 |
if History.current h = 0 then Theory (gthy, NONE) else raise UNDEF |
|
592 |
| _ => raise UNDEF)); |
|
593 |
||
21294 | 594 |
local |
595 |
||
596 |
fun begin_proof init finish = app_current (fn int => |
|
597 |
(fn Theory (gthy, _) => |
|
598 |
let |
|
599 |
val prf = init gthy; |
|
600 |
val schematic = Proof.schematic_goal prf; |
|
601 |
in |
|
602 |
if ! skip_proofs andalso schematic then |
|
603 |
warning "Cannot skip proof of schematic goal statement" |
|
604 |
else (); |
|
605 |
if ! skip_proofs andalso not schematic then |
|
606 |
SkipProof |
|
607 |
(History.init (undo_limit int) 0, (finish gthy (Proof.global_skip_proof int prf), gthy)) |
|
608 |
else Proof (ProofHistory.init (undo_limit int) prf, (finish gthy, gthy)) |
|
609 |
end |
|
610 |
| _ => raise UNDEF)); |
|
611 |
||
612 |
in |
|
613 |
||
614 |
fun local_theory_to_proof loc f = begin_proof (f o loc_begin loc) (loc_finish loc); |
|
615 |
||
616 |
fun theory_to_proof f = begin_proof |
|
617 |
(fn Context.Theory thy => f thy | _ => raise UNDEF) |
|
618 |
(K (Context.Theory o ProofContext.theory_of)); |
|
619 |
||
620 |
end; |
|
621 |
||
21007 | 622 |
val forget_proof = map_current (fn _ => |
623 |
(fn Proof (_, (_, orig_gthy)) => Theory (orig_gthy, NONE) |
|
624 |
| SkipProof (_, (_, orig_gthy)) => Theory (orig_gthy, NONE) |
|
625 |
| _ => raise UNDEF)); |
|
626 |
||
21177 | 627 |
fun present_proof f = map_current (fn int => |
628 |
(fn Proof (prf, x) => Proof (ProofHistory.apply I prf, x) |
|
629 |
| SkipProof (h, x) => SkipProof (History.apply I h, x) |
|
630 |
| _ => raise UNDEF) #> tap (f int)); |
|
631 |
||
17904
21c6894b5998
simplified interfaces proof/proof' etc.: perform ProofHistory.apply(s)/current internally;
wenzelm
parents:
17513
diff
changeset
|
632 |
fun proofs' f = map_current (fn int => |
21007 | 633 |
(fn Proof (prf, x) => Proof (ProofHistory.applys (f int) prf, x) |
634 |
| SkipProof (h, x) => SkipProof (History.apply I h, x) |
|
16815 | 635 |
| _ => raise UNDEF)); |
15668 | 636 |
|
17904
21c6894b5998
simplified interfaces proof/proof' etc.: perform ProofHistory.apply(s)/current internally;
wenzelm
parents:
17513
diff
changeset
|
637 |
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
|
638 |
val proofs = proofs' o K; |
6689 | 639 |
val proof = proof' o K; |
16815 | 640 |
|
641 |
fun actual_proof f = map_current (fn _ => |
|
21007 | 642 |
(fn Proof (prf, x) => Proof (f prf, x) |
20963
a7fd8f05a2be
added type global_theory -- theory or local_theory;
wenzelm
parents:
20928
diff
changeset
|
643 |
| _ => raise UNDEF)); |
16815 | 644 |
|
645 |
fun skip_proof f = map_current (fn _ => |
|
21007 | 646 |
(fn SkipProof (h, x) => SkipProof (f h, x) |
18563 | 647 |
| _ => raise UNDEF)); |
648 |
||
16815 | 649 |
fun skip_proof_to_theory p = map_current (fn _ => |
21007 | 650 |
(fn SkipProof (h, (gthy, _)) => |
651 |
if p (History.current h) then Theory (gthy, NONE) |
|
17904
21c6894b5998
simplified interfaces proof/proof' etc.: perform ProofHistory.apply(s)/current internally;
wenzelm
parents:
17513
diff
changeset
|
652 |
else raise UNDEF |
21c6894b5998
simplified interfaces proof/proof' etc.: perform ProofHistory.apply(s)/current internally;
wenzelm
parents:
17513
diff
changeset
|
653 |
| _ => raise UNDEF)); |
5828 | 654 |
|
655 |
||
656 |
||
657 |
(** toplevel transactions **) |
|
658 |
||
659 |
(* apply transitions *) |
|
660 |
||
6664 | 661 |
local |
662 |
||
9010 | 663 |
fun app int (tr as Transition {trans, int_only, print, no_timing, ...}) state = |
5828 | 664 |
let |
21962 | 665 |
val _ = |
666 |
if not int andalso int_only then warning (command_msg "Interactive-only " tr) |
|
667 |
else (); |
|
16682 | 668 |
|
18685 | 669 |
fun do_timing f x = (Output.info (command_msg "" tr); timeap f x); |
16682 | 670 |
fun do_profiling f x = profile (! profiling) f x; |
671 |
||
6689 | 672 |
val (result, opt_exn) = |
16729 | 673 |
state |> (apply_trans int trans |
674 |
|> (if ! profiling > 0 then do_profiling else I) |
|
675 |
|> (if ! profiling > 0 orelse ! timing andalso not no_timing then do_timing else I)); |
|
21962 | 676 |
val _ = |
677 |
if int andalso not (! quiet) andalso exists (member (op =) print) ("" :: ! print_mode) |
|
678 |
then print_state false result else (); |
|
15570 | 679 |
in (result, Option.map (fn UNDEF => type_error tr state | exn => exn) opt_exn) end; |
6664 | 680 |
|
681 |
in |
|
5828 | 682 |
|
6689 | 683 |
fun apply int tr st = |
6965 | 684 |
(case app int tr st of |
15531 | 685 |
(_, SOME TERMINATE) => NONE |
686 |
| (_, SOME RESTART) => SOME (toplevel, NONE) |
|
687 |
| (state', SOME (EXCURSION_FAIL exn_info)) => SOME (state', SOME exn_info) |
|
688 |
| (state', SOME exn) => SOME (state', SOME (exn, at_command tr)) |
|
689 |
| (state', NONE) => SOME (state', NONE)); |
|
6664 | 690 |
|
691 |
end; |
|
5828 | 692 |
|
693 |
||
17076 | 694 |
(* excursion: toplevel -- apply transformers/presentation -- toplevel *) |
5828 | 695 |
|
6664 | 696 |
local |
697 |
||
5828 | 698 |
fun excur [] x = x |
17076 | 699 |
| excur ((tr, pr) :: trs) (st, res) = |
17321
227f1f5c3959
added interact flag to control mode of excursions;
wenzelm
parents:
17320
diff
changeset
|
700 |
(case apply (! interact) tr st of |
15531 | 701 |
SOME (st', NONE) => |
18685 | 702 |
excur trs (st', pr st st' res handle exn => |
10324 | 703 |
raise EXCURSION_FAIL (exn, "Presentation failed\n" ^ at_command tr)) |
15531 | 704 |
| SOME (st', SOME exn_info) => raise EXCURSION_FAIL exn_info |
705 |
| NONE => raise EXCURSION_FAIL (TERMINATE, at_command tr)); |
|
5828 | 706 |
|
17076 | 707 |
fun no_pr _ _ _ = (); |
708 |
||
6664 | 709 |
in |
710 |
||
17076 | 711 |
fun present_excursion trs res = |
21958
9dfd1ca4c0a0
refined notion of empty toplevel, admits undo of 'end';
wenzelm
parents:
21861
diff
changeset
|
712 |
(case excur trs (toplevel, res) of |
22056 | 713 |
(state as Toplevel _, res') => (safe_exit state; res') |
18685 | 714 |
| _ => error "Unfinished development at end of input") |
9134 | 715 |
handle exn => error (exn_message exn); |
716 |
||
17076 | 717 |
fun excursion trs = present_excursion (map (rpair no_pr) trs) (); |
7062 | 718 |
|
6664 | 719 |
end; |
720 |
||
5828 | 721 |
|
722 |
||
723 |
(** interactive transformations **) |
|
724 |
||
725 |
(* the global state reference *) |
|
726 |
||
15531 | 727 |
val global_state = ref (toplevel, NONE: (exn * string) option); |
5828 | 728 |
|
15531 | 729 |
fun set_state state = global_state := (state, NONE); |
5828 | 730 |
fun get_state () = fst (! global_state); |
731 |
fun exn () = snd (! global_state); |
|
732 |
||
733 |
||
734 |
(* apply transformers to global state *) |
|
735 |
||
14985 | 736 |
nonfix >> >>>; |
5828 | 737 |
|
738 |
fun >> tr = |
|
739 |
(case apply true tr (get_state ()) of |
|
15531 | 740 |
NONE => false |
741 |
| SOME (state', exn_info) => |
|
5828 | 742 |
(global_state := (state', exn_info); |
22014
4b70cbd96007
removed Toplevel.print_exn hook -- existing error_msg_fn does the job;
wenzelm
parents:
21986
diff
changeset
|
743 |
print_exn exn_info; |
5828 | 744 |
true)); |
745 |
||
14985 | 746 |
fun >>> [] = () |
747 |
| >>> (tr :: trs) = if >> tr then >>> trs else (); |
|
748 |
||
21958
9dfd1ca4c0a0
refined notion of empty toplevel, admits undo of 'end';
wenzelm
parents:
21861
diff
changeset
|
749 |
fun init_state () = (>> (init_empty (K ()) empty); ()); |
9dfd1ca4c0a0
refined notion of empty toplevel, admits undo of 'end';
wenzelm
parents:
21861
diff
changeset
|
750 |
|
9dfd1ca4c0a0
refined notion of empty toplevel, admits undo of 'end';
wenzelm
parents:
21861
diff
changeset
|
751 |
|
9dfd1ca4c0a0
refined notion of empty toplevel, admits undo of 'end';
wenzelm
parents:
21861
diff
changeset
|
752 |
(* the Isar source of transitions *) |
9dfd1ca4c0a0
refined notion of empty toplevel, admits undo of 'end';
wenzelm
parents:
21861
diff
changeset
|
753 |
|
9dfd1ca4c0a0
refined notion of empty toplevel, admits undo of 'end';
wenzelm
parents:
21861
diff
changeset
|
754 |
type 'a isar = |
9dfd1ca4c0a0
refined notion of empty toplevel, admits undo of 'end';
wenzelm
parents:
21861
diff
changeset
|
755 |
(transition, (transition option, |
9dfd1ca4c0a0
refined notion of empty toplevel, admits undo of 'end';
wenzelm
parents:
21861
diff
changeset
|
756 |
(OuterLex.token, (OuterLex.token option, (OuterLex.token, (OuterLex.token, |
9dfd1ca4c0a0
refined notion of empty toplevel, admits undo of 'end';
wenzelm
parents:
21861
diff
changeset
|
757 |
Position.T * (Symbol.symbol, (string, 'a) Source.source) Source.source) |
9dfd1ca4c0a0
refined notion of empty toplevel, admits undo of 'end';
wenzelm
parents:
21861
diff
changeset
|
758 |
Source.source) Source.source) Source.source) Source.source) Source.source) Source.source; |
9dfd1ca4c0a0
refined notion of empty toplevel, admits undo of 'end';
wenzelm
parents:
21861
diff
changeset
|
759 |
|
17513
0393718c2f1c
get_interrupt: special handling of IO.io now in ML-Systems/smlnj-basis-compat.ML;
wenzelm
parents:
17500
diff
changeset
|
760 |
(*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
|
761 |
fun get_interrupt src = SOME (Source.get_single src) handle Interrupt => NONE; |
7602 | 762 |
|
20928 | 763 |
fun warn_secure () = |
764 |
let val secure = Secure.is_secure () |
|
765 |
in if secure then warning "Cannot exit to ML in secure mode" else (); secure end; |
|
766 |
||
5828 | 767 |
fun raw_loop src = |
7602 | 768 |
(case get_interrupt (Source.set_prompt (prompt_state (get_state ())) src) of |
15531 | 769 |
NONE => (writeln "\nInterrupt."; raw_loop src) |
20928 | 770 |
| SOME NONE => if warn_secure () then quit () else () |
771 |
| SOME (SOME (tr, src')) => |
|
772 |
if >> tr orelse warn_secure () then raw_loop src' |
|
773 |
else ()); |
|
5828 | 774 |
|
12987 | 775 |
fun loop src = ignore_interrupt raw_loop src; |
5828 | 776 |
|
777 |
end; |