author  wenzelm 
Thu, 02 Oct 2008 14:22:40 +0200  
changeset 28458  0966ac3f4a40 
parent 28453  06702e7acd1d 
child 28463  b8f16c92122a 
permissions  rwrr 
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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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Isabelle/Isar toplevel transactions. 
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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 > ProofNode.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 toplevel: state 
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val is_toplevel: state > bool 
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val is_theory: state > bool 
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val is_proof: state > bool 

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val level: state > int 
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val previous_node_of: state > node option 
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val node_of: state > node 
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val node_case: (generic_theory > 'a) > (Proof.state > 'a) > state > 'a 
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val context_of: state > Proof.context 
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val generic_theory_of: state > generic_theory 
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val theory_of: state > theory 
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val proof_of: state > Proof.state 

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val proof_position_of: state > int 
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val enter_proof_body: state > Proof.state 
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val print_state_context: state > unit 
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val print_state: bool > state > unit 

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val quiet: bool ref 
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val debug: bool ref 

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val interact: bool ref 
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val timing: bool ref 
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val profiling: int ref 

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val skip_proofs: bool ref 
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exception TERMINATE 
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exception TOPLEVEL_ERROR 
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exception CONTEXT of Proof.context * exn 
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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 empty: transition 
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val init_of: transition > string option 
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val name_of: transition > string 
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val pos_of: transition > Position.T 
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val str_of: transition > string 
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val name: string > transition > transition 
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val position: Position.T > transition > transition 

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val interactive: bool > transition > transition 

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val print: transition > transition 

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val no_timing: transition > transition 
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val init_theory: string > (bool > theory) > (theory > unit) > transition > transition 
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val exit: 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 ignored: Position.T > transition 
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val malformed: Position.T > string > transition 

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val theory: (theory > theory) > transition > transition 
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val generic_theory: (generic_theory > generic_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 > (node > unit) > transition > transition 
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val local_theory_to_proof': xstring option > (bool > local_theory > Proof.state) > 
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transition > transition 

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val local_theory_to_proof: xstring option > (local_theory > Proof.state) > 
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transition > transition 

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val theory_to_proof: (theory > Proof.state) > transition > transition 
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val end_proof: (bool > Proof.state > Proof.context) > transition > transition 
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val forget_proof: transition > transition 

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val present_proof: (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: (ProofNode.T > ProofNode.T) > transition > transition 
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val skip_proof: (int > int) > transition > transition 
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val skip_proof_to_theory: (int > bool) > transition > transition 
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val get_id: transition > string option 
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val put_id: string > 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 setmp_thread_position: transition > ('a > 'b) > 'a > 'b 
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val status: transition > Markup.T > unit 
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val error_msg: transition > exn * string > unit 
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val add_hook: (transition > state > state > unit) > unit 
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val transition: bool > transition > state > (state * (exn * string) option) option 
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val commit_exit: Position.T > transition 
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val command: transition > state > state 

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val excursion: (transition * transition list) list > (transition * state) list * (unit > unit) 
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end; 
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structure Toplevel: TOPLEVEL = 
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struct 
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(** toplevel state **) 

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exception UNDEF; 
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(* local theory wrappers *) 
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type generic_theory = Context.generic; (*theory or local_theory*) 
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val loc_init = TheoryTarget.context; 
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val loc_exit = LocalTheory.exit_global; 
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fun loc_begin loc (Context.Theory thy) = loc_init (the_default "" loc) thy 
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 loc_begin NONE (Context.Proof lthy) = lthy 
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 loc_begin (SOME loc) (Context.Proof lthy) = loc_init loc (loc_exit lthy); 
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fun loc_finish _ (Context.Theory _) = Context.Theory o loc_exit 

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 loc_finish NONE (Context.Proof _) = Context.Proof o LocalTheory.restore 

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 loc_finish (SOME _) (Context.Proof lthy) = fn lthy' => 
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Context.Proof (LocalTheory.reinit (LocalTheory.raw_theory (K (loc_exit lthy')) lthy)); 

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(* datatype node *) 
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datatype node = 
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Theory of generic_theory * Proof.context option 
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(*theory with presentation context*)  
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Proof of ProofNode.T * ((Proof.context > generic_theory) * generic_theory) 
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(*proof node, finish, original theory*)  
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SkipProof of int * (generic_theory * generic_theory); 
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(*proof depth, 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 (ProofNode.current prf) 
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 cases_node f _ (SkipProof (_, (gthy, _))) = f gthy; 
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fun presentation_context (SOME (Theory (_, SOME ctxt))) NONE = ctxt 
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 presentation_context (SOME node) NONE = cases_node Context.proof_of Proof.context_of node 
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 presentation_context (SOME node) (SOME loc) = 
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loc_init loc (cases_node Context.theory_of Proof.theory_of node) 
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 presentation_context NONE _ = raise UNDEF; 
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fun reset_presentation (Theory (gthy, _)) = Theory (gthy, NONE) 
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 reset_presentation node = node; 
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(* datatype state *) 
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type node_info = node * (theory > unit); (*node with exit operation*) 
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datatype state = State of node_info option * node_info option; (*current, previous*) 
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val toplevel = State (NONE, 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 (Theory _, _), _)) = 0 
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 level (State (SOME (Proof (prf, _), _), _)) = Proof.level (ProofNode.current prf) 
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 level (State (SOME (SkipProof (d, _), _), _)) = d + 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 (Theory (Context.Theory _, _), _), _)) = "in theory mode" 
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 str_of_state (State (SOME (Theory (Context.Proof _, _), _), _)) = "in local theory mode" 
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 str_of_state (State (SOME (Proof _, _), _)) = "in proof mode" 
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 str_of_state (State (SOME (SkipProof _, _), _)) = "in skipped proof mode"; 
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(* current node *) 
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fun previous_node_of (State (_, prev)) = Option.map #1 prev; 
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fun node_of (State (NONE, _)) = raise UNDEF 
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 node_of (State (SOME (node, _), _)) = node; 
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18589  182 
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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21506  187 
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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18589  192 
fun proof_position_of state = 
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(case node_of state of 

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Proof (prf, _) => ProofNode.position prf 
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 _ => raise UNDEF); 
6664  196 

21007  197 
val enter_proof_body = node_case (Proof.init o Context.proof_of) Proof.enter_forward; 
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16815  200 
(* print state *) 
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25292  202 
val pretty_context = LocalTheory.pretty o Context.cases (TheoryTarget.init NONE) I; 
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fun print_state_context state = 
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(case try node_of state of 
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NONE => [] 
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 SOME (Theory (gthy, _)) => pretty_context gthy 
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 SOME (Proof (_, (_, gthy))) => pretty_context gthy 
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 SOME (SkipProof (_, (gthy, _))) => pretty_context gthy) 
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> Pretty.chunks > Pretty.writeln; 
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fun print_state prf_only state = 
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(case try node_of state of 
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NONE => [] 

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 SOME (Theory (gthy, _)) => if prf_only then [] else pretty_context gthy 

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 SOME (Proof (prf, _)) => 

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Proof.pretty_state (ProofNode.position prf) (ProofNode.current prf) 
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 SOME (SkipProof (d, _)) => [Pretty.str ("skipped proof: depth " ^ string_of_int d)]) 
23701  219 
> Pretty.markup_chunks Markup.state > Pretty.writeln; 
16815  220 

221 

15668  222 

5828  223 
(** toplevel transitions **) 
224 

16682  225 
val quiet = ref false; 
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val debug = Output.debugging; 
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val interact = ref false; 
16682  228 
val timing = Output.timing; 
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val profiling = ref 0; 

16815  230 
val skip_proofs = ref false; 
16682  231 

5828  232 
exception TERMINATE; 
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exception EXCURSION_FAIL of exn * string; 
6689  234 
exception FAILURE of state * exn; 
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exception TOPLEVEL_ERROR; 
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(* print exceptions *) 
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exception CONTEXT of Proof.context * exn; 
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fun exn_context NONE exn = exn 
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 exn_context (SOME ctxt) exn = CONTEXT (ctxt, exn); 
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local 
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fun if_context NONE _ _ = [] 
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 if_context (SOME ctxt) f xs = map (f ctxt) xs; 
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fun raised name [] = "exception " ^ name ^ " raised" 
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 raised name [msg] = "exception " ^ name ^ " raised: " ^ msg 
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 raised name msgs = cat_lines (("exception " ^ name ^ " raised:") :: msgs); 
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in 
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fun exn_message e = 
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let 
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val detailed = ! debug; 
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fun exn_msg _ (CONTEXT (ctxt, exn)) = exn_msg (SOME ctxt) exn 
28458  261 
 exn_msg ctxt (Exn.EXCEPTIONS exns) = cat_lines (map (exn_msg ctxt) exns) 
26293  262 
 exn_msg ctxt (EXCURSION_FAIL (exn, loc)) = 
263 
exn_msg ctxt exn ^ Markup.markup Markup.location ("\n" ^ loc) 

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 exn_msg _ TERMINATE = "Exit." 
28443  265 
 exn_msg _ Exn.Interrupt = "Interrupt." 
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 exn_msg _ TimeLimit.TimeOut = "Timeout." 
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 exn_msg _ TOPLEVEL_ERROR = "Error." 
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 exn_msg _ (SYS_ERROR msg) = "## SYSTEM ERROR ##\n" ^ msg 
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 exn_msg _ (ERROR msg) = msg 
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 exn_msg _ (Fail msg) = raised "Fail" [msg] 
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 exn_msg _ (THEORY (msg, thys)) = 
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raised "THEORY" (msg :: (if detailed then map Context.str_of_thy thys else [])) 
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 exn_msg _ (Syntax.AST (msg, asts)) = raised "AST" (msg :: 
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(if detailed then map (Pretty.string_of o Syntax.pretty_ast) asts else [])) 
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 exn_msg ctxt (TYPE (msg, Ts, ts)) = raised "TYPE" (msg :: 
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(if detailed then 
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if_context ctxt Syntax.string_of_typ Ts @ if_context ctxt Syntax.string_of_term ts 
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else [])) 
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 exn_msg ctxt (TERM (msg, ts)) = raised "TERM" (msg :: 
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(if detailed then if_context ctxt Syntax.string_of_term ts else [])) 
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 exn_msg ctxt (THM (msg, i, thms)) = raised ("THM " ^ string_of_int i) (msg :: 
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(if detailed then if_context ctxt ProofContext.string_of_thm thms else [])) 
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 exn_msg _ exn = raised (General.exnMessage exn) [] 
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in exn_msg NONE e end; 
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end; 
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(* controlled execution *) 
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local 
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18685  293 
fun debugging f x = 
23940  294 
if ! debug then exception_trace (fn () => f x) 
18685  295 
else f x; 
296 

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fun toplevel_error f x = 
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let val ctxt = try ML_Context.the_local_context () in 
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f x handle exn => 
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(Output.error_msg (exn_message (exn_context ctxt exn)); raise TOPLEVEL_ERROR) 
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end; 
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in 
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fun controlled_execution f = 
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f 
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> debugging 
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> interruptible; 
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fun program f = 
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(f 
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> debugging 
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> toplevel_error) (); 
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end; 
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5828  317 

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(* node transactions  maintaining stable checkpoints *) 
7022  319 

6689  320 
local 
321 

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fun is_draft_theory (Theory (gthy, _)) = Context.is_draft (Context.theory_of gthy) 
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 is_draft_theory _ = false; 
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fun is_stale state = Context.is_stale (theory_of state) handle UNDEF => false; 
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326 

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fun stale_error NONE = SOME (ERROR "Stale theory encountered after successful execution!") 
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 stale_error some = some; 
16815  329 

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fun map_theory f (Theory (gthy, ctxt)) = 
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Theory (Context.mapping f (LocalTheory.raw_theory f) gthy, ctxt) 
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 map_theory _ node = node; 
6689  333 

334 
in 

335 

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fun apply_transaction pos f (node, exit) = 
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let 
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val _ = is_draft_theory node andalso error "Illegal draft theory in toplevel state"; 
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val cont_node = reset_presentation node; 
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val back_node = map_theory (Theory.checkpoint o Theory.copy) cont_node; 
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fun state_error e nd = (State (SOME (nd, exit), SOME (node, exit)), e); 
6689  342 

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val (result, err) = 
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cont_node 
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> controlled_execution f 
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> map_theory Theory.checkpoint 
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> state_error NONE 
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handle exn => state_error (SOME exn) cont_node; 
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349 

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val (result', err') = 
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if is_stale result then state_error (stale_error err) back_node 
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else (result, err); 
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in 
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(case err' of 
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NONE => result' 
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 SOME exn => raise FAILURE (result', exn)) 
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end; 
6689  358 

359 
end; 

360 

361 

362 
(* primitive transitions *) 

363 

5828  364 
datatype trans = 
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Init of string * (bool > theory) * (theory > unit)  (*theory name, init, exit*) 
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Exit  (*formal exit of theory  without committing*) 
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CommitExit  (*exit and commit final theory*) 
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Keep of bool > state > unit  (*peek at state*) 
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Transaction of bool > node > node; (*node transaction*) 
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6689  371 
local 
5828  372 

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fun apply_tr int _ (Init (_, f, exit)) (State (NONE, _)) = 
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State (SOME (Theory (Context.Theory (Theory.checkpoint (f int)), NONE), exit), NONE) 
27603  375 
 apply_tr _ _ Exit (State (prev as SOME (Theory (Context.Theory _, _), _), _)) = 
376 
State (NONE, prev) 

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 apply_tr _ _ CommitExit (State (NONE, SOME (Theory (Context.Theory thy, _), exit))) = 
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(controlled_execution exit thy; toplevel) 
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 apply_tr int _ (Keep f) state = 
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controlled_execution (fn x => tap (f int) x) state 
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 apply_tr int pos (Transaction f) (State (SOME state, _)) = 
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apply_transaction pos (fn x => f int x) state 
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 apply_tr _ _ _ _ = raise UNDEF; 
5828  384 

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fun apply_union _ _ [] state = raise FAILURE (state, UNDEF) 
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 apply_union int pos (tr :: trs) state = 
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387 
apply_union int pos trs state 
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handle UNDEF => apply_tr int pos tr state 
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 FAILURE (alt_state, UNDEF) => apply_tr int pos tr alt_state 
6689  390 
 exn as FAILURE _ => raise exn 
391 
 exn => raise FAILURE (state, exn); 

392 

393 
in 

394 

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fun apply_trans int pos trs state = (apply_union int pos trs state, NONE) 
15531  396 
handle FAILURE (alt_state, exn) => (alt_state, SOME exn)  exn => (state, SOME exn); 
6689  397 

398 
end; 

5828  399 

400 

401 
(* datatype transition *) 

402 

403 
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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406 
int_only: bool, (*interactiveonly*) 
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print: bool, (*print result state*) 
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eliminated unused name_of, source, source_of, print', print3, three_buffersN;
wenzelm
parents:
26602
diff
changeset

408 
no_timing: bool, (*suppress timing*) 
78b3ad7af5d5
eliminated unused name_of, source, source_of, print', print3, three_buffersN;
wenzelm
parents:
26602
diff
changeset

409 
trans: trans list}; (*primitive transitions (union)*) 
5828  410 

26621
78b3ad7af5d5
eliminated unused name_of, source, source_of, print', print3, three_buffersN;
wenzelm
parents:
26602
diff
changeset

411 
fun make_transition (name, pos, int_only, print, no_timing, trans) = 
78b3ad7af5d5
eliminated unused name_of, source, source_of, print', print3, three_buffersN;
wenzelm
parents:
26602
diff
changeset

412 
Transition {name = name, pos = pos, int_only = int_only, print = print, no_timing = no_timing, 
78b3ad7af5d5
eliminated unused name_of, source, source_of, print', print3, three_buffersN;
wenzelm
parents:
26602
diff
changeset

413 
trans = trans}; 
5828  414 

26621
78b3ad7af5d5
eliminated unused name_of, source, source_of, print', print3, three_buffersN;
wenzelm
parents:
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diff
changeset

415 
fun map_transition f (Transition {name, pos, int_only, print, no_timing, trans}) = 
78b3ad7af5d5
eliminated unused name_of, source, source_of, print', print3, three_buffersN;
wenzelm
parents:
26602
diff
changeset

416 
make_transition (f (name, pos, int_only, print, no_timing, trans)); 
5828  417 

27441  418 
val empty = make_transition ("", Position.none, false, false, false, []); 
5828  419 

420 

421 
(* diagnostics *) 

422 

27441  423 
fun init_of (Transition {trans = [Init (name, _, _)], ...}) = SOME name 
424 
 init_of _ = NONE; 

425 

27427  426 
fun name_of (Transition {name, ...}) = name; 
28105  427 
fun pos_of (Transition {pos, ...}) = pos; 
428 
fun str_of tr = quote (name_of tr) ^ Position.str_of (pos_of tr); 

5828  429 

27427  430 
fun command_msg msg tr = msg ^ "command " ^ str_of tr; 
5828  431 
fun at_command tr = command_msg "At " tr ^ "."; 
432 

433 
fun type_error tr state = 

18685  434 
ERROR (command_msg "Illegal application of " tr ^ " " ^ str_of_state state); 
5828  435 

436 

437 
(* modify transitions *) 

438 

28451
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datatype transition: internal trans field is maintained in reverse order;
wenzelm
parents:
28446
diff
changeset

439 
fun name name = map_transition (fn (_, pos, int_only, print, no_timing, trans) => 
0586b855c2b5
datatype transition: internal trans field is maintained in reverse order;
wenzelm
parents:
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diff
changeset

440 
(name, pos, int_only, print, no_timing, trans)); 
9010  441 

26621
78b3ad7af5d5
eliminated unused name_of, source, source_of, print', print3, three_buffersN;
wenzelm
parents:
26602
diff
changeset

442 
fun position pos = map_transition (fn (name, _, int_only, print, no_timing, trans) => 
78b3ad7af5d5
eliminated unused name_of, source, source_of, print', print3, three_buffersN;
wenzelm
parents:
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diff
changeset

443 
(name, pos, int_only, print, no_timing, trans)); 
5828  444 

26621
78b3ad7af5d5
eliminated unused name_of, source, source_of, print', print3, three_buffersN;
wenzelm
parents:
26602
diff
changeset

445 
fun interactive int_only = map_transition (fn (name, pos, _, print, no_timing, trans) => 
78b3ad7af5d5
eliminated unused name_of, source, source_of, print', print3, three_buffersN;
wenzelm
parents:
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diff
changeset

446 
(name, pos, int_only, print, no_timing, trans)); 
14923  447 

26621
78b3ad7af5d5
eliminated unused name_of, source, source_of, print', print3, three_buffersN;
wenzelm
parents:
26602
diff
changeset

448 
val no_timing = map_transition (fn (name, pos, int_only, print, _, trans) => 
78b3ad7af5d5
eliminated unused name_of, source, source_of, print', print3, three_buffersN;
wenzelm
parents:
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diff
changeset

449 
(name, pos, int_only, print, true, trans)); 
17363  450 

26621
78b3ad7af5d5
eliminated unused name_of, source, source_of, print', print3, three_buffersN;
wenzelm
parents:
26602
diff
changeset

451 
fun add_trans tr = map_transition (fn (name, pos, int_only, print, no_timing, trans) => 
28451
0586b855c2b5
datatype transition: internal trans field is maintained in reverse order;
wenzelm
parents:
28446
diff
changeset

452 
(name, pos, int_only, print, no_timing, tr :: trans)); 
16607  453 

28433
b3dab95f098f
begin_proof: avoid race condition wrt. skip_proofs flag;
wenzelm
parents:
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diff
changeset

454 
val reset_trans = map_transition (fn (name, pos, int_only, print, no_timing, _) => 
b3dab95f098f
begin_proof: avoid race condition wrt. skip_proofs flag;
wenzelm
parents:
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diff
changeset

455 
(name, pos, int_only, print, no_timing, [])); 
b3dab95f098f
begin_proof: avoid race condition wrt. skip_proofs flag;
wenzelm
parents:
28425
diff
changeset

456 

28453
06702e7acd1d
excursion/unit_result: no print for forked end, finish into global theory, pick resul from presentation context;
wenzelm
parents:
28451
diff
changeset

457 
fun set_print print = map_transition (fn (name, pos, int_only, _, no_timing, trans) => 
06702e7acd1d
excursion/unit_result: no print for forked end, finish into global theory, pick resul from presentation context;
wenzelm
parents:
28451
diff
changeset

458 
(name, pos, int_only, print, no_timing, trans)); 
06702e7acd1d
excursion/unit_result: no print for forked end, finish into global theory, pick resul from presentation context;
wenzelm
parents:
28451
diff
changeset

459 

06702e7acd1d
excursion/unit_result: no print for forked end, finish into global theory, pick resul from presentation context;
wenzelm
parents:
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diff
changeset

460 
val print = set_print true; 
5828  461 

462 

21007  463 
(* basic transitions *) 
5828  464 

27576
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eliminated internal command history  superceeded by global Isar state (cf. isar.ML);
wenzelm
parents:
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diff
changeset

465 
fun init_theory name f exit = add_trans (Init (name, f, exit)); 
6689  466 
val exit = add_trans Exit; 
7612  467 
val keep' = add_trans o Keep; 
27601
6683cdb94af8
simplified commit_exit: operate on previous node of final state, include warning here;
wenzelm
parents:
27583
diff
changeset

468 
fun transaction f = add_trans (Transaction f); 
5828  469 

7612  470 
fun keep f = add_trans (Keep (fn _ => f)); 
5828  471 
fun imperative f = keep (fn _ => f ()); 
472 

27840  473 
fun ignored pos = empty > name "<ignored>" > position pos > imperative I; 
474 
fun malformed pos msg = 

475 
empty > name "<malformed>" > position pos > imperative (fn () => error msg); 

476 

21007  477 
val unknown_theory = imperative (fn () => warning "Unknown theory context"); 
478 
val unknown_proof = imperative (fn () => warning "Unknown proof context"); 

479 
val unknown_context = imperative (fn () => warning "Unknown context"); 

15668  480 

21007  481 

482 
(* theory transitions *) 

15668  483 

27601
6683cdb94af8
simplified commit_exit: operate on previous node of final state, include warning here;
wenzelm
parents:
27583
diff
changeset

484 
fun generic_theory f = transaction (fn _ => 
26491  485 
(fn Theory (gthy, _) => Theory (f gthy, NONE) 
486 
 _ => raise UNDEF)); 

487 

27601
6683cdb94af8
simplified commit_exit: operate on previous node of final state, include warning here;
wenzelm
parents:
27583
diff
changeset

488 
fun theory' f = transaction (fn int => 
20963
a7fd8f05a2be
added type global_theory  theory or local_theory;
wenzelm
parents:
20928
diff
changeset

489 
(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

490 
 _ => raise UNDEF)); 
a7fd8f05a2be
added type global_theory  theory or local_theory;
wenzelm
parents:
20928
diff
changeset

491 

a7fd8f05a2be
added type global_theory  theory or local_theory;
wenzelm
parents:
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diff
changeset

492 
fun theory f = theory' (K f); 
a7fd8f05a2be
added type global_theory  theory or local_theory;
wenzelm
parents:
20928
diff
changeset

493 

27601
6683cdb94af8
simplified commit_exit: operate on previous node of final state, include warning here;
wenzelm
parents:
27583
diff
changeset

494 
fun begin_local_theory begin f = transaction (fn _ => 
20963
a7fd8f05a2be
added type global_theory  theory or local_theory;
wenzelm
parents:
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diff
changeset

495 
(fn Theory (Context.Theory thy, _) => 
a7fd8f05a2be
added type global_theory  theory or local_theory;
wenzelm
parents:
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diff
changeset

496 
let 
20985  497 
val lthy = f thy; 
21294  498 
val gthy = if begin then Context.Proof lthy else Context.Theory (loc_exit lthy); 
499 
in Theory (gthy, SOME lthy) end 

20963
a7fd8f05a2be
added type global_theory  theory or local_theory;
wenzelm
parents:
20928
diff
changeset

500 
 _ => raise UNDEF)); 
17076  501 

27601
6683cdb94af8
simplified commit_exit: operate on previous node of final state, include warning here;
wenzelm
parents:
27583
diff
changeset

502 
val end_local_theory = transaction (fn _ => 
21294  503 
(fn Theory (Context.Proof lthy, _) => Theory (Context.Theory (loc_exit lthy), SOME lthy) 
21007  504 
 _ => raise UNDEF)); 
505 

506 
local 

507 

27601
6683cdb94af8
simplified commit_exit: operate on previous node of final state, include warning here;
wenzelm
parents:
27583
diff
changeset

508 
fun local_theory_presentation loc f g = transaction (fn int => 
21294  509 
(fn Theory (gthy, _) => 
510 
let 

511 
val finish = loc_finish loc gthy; 

25960  512 
val lthy' = f (loc_begin loc gthy); 
21294  513 
in Theory (finish lthy', SOME lthy') end 
27859  514 
 _ => raise UNDEF) #> tap g); 
15668  515 

21007  516 
in 
517 

20963
a7fd8f05a2be
added type global_theory  theory or local_theory;
wenzelm
parents:
20928
diff
changeset

518 
fun local_theory loc f = local_theory_presentation loc f (K I); 
a7fd8f05a2be
added type global_theory  theory or local_theory;
wenzelm
parents:
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diff
changeset

519 
fun present_local_theory loc g = local_theory_presentation loc I g; 
18955  520 

21007  521 
end; 
522 

523 

524 
(* proof transitions *) 

525 

27601
6683cdb94af8
simplified commit_exit: operate on previous node of final state, include warning here;
wenzelm
parents:
27583
diff
changeset

526 
fun end_proof f = transaction (fn int => 
24795
6f5cb7885fd7
print_state_context: local theory context, not proof context;
wenzelm
parents:
24780
diff
changeset

527 
(fn Proof (prf, (finish, _)) => 
27564
fc6d34e49e17
replaced obsolete ProofHistory by ProofNode (backtracking only);
wenzelm
parents:
27500
diff
changeset

528 
let val state = ProofNode.current prf in 
21007  529 
if can (Proof.assert_bottom true) state then 
530 
let 

531 
val ctxt' = f int state; 

532 
val gthy' = finish ctxt'; 

533 
in Theory (gthy', SOME ctxt') end 

534 
else raise UNDEF 

535 
end 

27564
fc6d34e49e17
replaced obsolete ProofHistory by ProofNode (backtracking only);
wenzelm
parents:
27500
diff
changeset

536 
 SkipProof (0, (gthy, _)) => Theory (gthy, NONE) 
21007  537 
 _ => raise UNDEF)); 
538 

21294  539 
local 
540 

27601
6683cdb94af8
simplified commit_exit: operate on previous node of final state, include warning here;
wenzelm
parents:
27583
diff
changeset

541 
fun begin_proof init finish = transaction (fn int => 
21294  542 
(fn Theory (gthy, _) => 
543 
let 

24453  544 
val prf = init int gthy; 
28433
b3dab95f098f
begin_proof: avoid race condition wrt. skip_proofs flag;
wenzelm
parents:
28425
diff
changeset

545 
val skip = ! skip_proofs; 
21294  546 
val schematic = Proof.schematic_goal prf; 
547 
in 

28433
b3dab95f098f
begin_proof: avoid race condition wrt. skip_proofs flag;
wenzelm
parents:
28425
diff
changeset

548 
if skip andalso schematic then 
21294  549 
warning "Cannot skip proof of schematic goal statement" 
550 
else (); 

28433
b3dab95f098f
begin_proof: avoid race condition wrt. skip_proofs flag;
wenzelm
parents:
28425
diff
changeset

551 
if skip andalso not schematic then 
27564
fc6d34e49e17
replaced obsolete ProofHistory by ProofNode (backtracking only);
wenzelm
parents:
27500
diff
changeset

552 
SkipProof (0, (finish gthy (Proof.global_skip_proof int prf), gthy)) 
fc6d34e49e17
replaced obsolete ProofHistory by ProofNode (backtracking only);
wenzelm
parents:
27500
diff
changeset

553 
else Proof (ProofNode.init prf, (finish gthy, gthy)) 
21294  554 
end 
555 
 _ => raise UNDEF)); 

556 

557 
in 

558 

24780
47bb1e380d83
local_theory transactions: more careful treatment of context position;
wenzelm
parents:
24634
diff
changeset

559 
fun local_theory_to_proof' loc f = begin_proof 
25960  560 
(fn int => fn gthy => f int (loc_begin loc gthy)) 
24780
47bb1e380d83
local_theory transactions: more careful treatment of context position;
wenzelm
parents:
24634
diff
changeset

561 
(loc_finish loc); 
47bb1e380d83
local_theory transactions: more careful treatment of context position;
wenzelm
parents:
24634
diff
changeset

562 

24453  563 
fun local_theory_to_proof loc f = local_theory_to_proof' loc (K f); 
21294  564 

565 
fun theory_to_proof f = begin_proof 

24780
47bb1e380d83
local_theory transactions: more careful treatment of context position;
wenzelm
parents:
24634
diff
changeset

566 
(K (fn Context.Theory thy => f thy  _ => raise UNDEF)) 
47bb1e380d83
local_theory transactions: more careful treatment of context position;
wenzelm
parents:
24634
diff
changeset

567 
(K (Context.Theory o ProofContext.theory_of)); 
21294  568 

569 
end; 

570 

27601
6683cdb94af8
simplified commit_exit: operate on previous node of final state, include warning here;
wenzelm
parents:
27583
diff
changeset

571 
val forget_proof = transaction (fn _ => 
21007  572 
(fn Proof (_, (_, orig_gthy)) => Theory (orig_gthy, NONE) 
573 
 SkipProof (_, (_, orig_gthy)) => Theory (orig_gthy, NONE) 

574 
 _ => raise UNDEF)); 

575 

27859  576 
fun present_proof f = transaction (fn _ => 
27564
fc6d34e49e17
replaced obsolete ProofHistory by ProofNode (backtracking only);
wenzelm
parents:
27500
diff
changeset

577 
(fn Proof (prf, x) => Proof (ProofNode.apply I prf, x) 
fc6d34e49e17
replaced obsolete ProofHistory by ProofNode (backtracking only);
wenzelm
parents:
27500
diff
changeset

578 
 skip as SkipProof _ => skip 
27859  579 
 _ => raise UNDEF) #> tap f); 
21177  580 

27601
6683cdb94af8
simplified commit_exit: operate on previous node of final state, include warning here;
wenzelm
parents:
27583
diff
changeset

581 
fun proofs' f = transaction (fn int => 
27564
fc6d34e49e17
replaced obsolete ProofHistory by ProofNode (backtracking only);
wenzelm
parents:
27500
diff
changeset

582 
(fn Proof (prf, x) => Proof (ProofNode.applys (f int) prf, x) 
fc6d34e49e17
replaced obsolete ProofHistory by ProofNode (backtracking only);
wenzelm
parents:
27500
diff
changeset

583 
 skip as SkipProof _ => skip 
16815  584 
 _ => raise UNDEF)); 
15668  585 

17904
21c6894b5998
simplified interfaces proof/proof' etc.: perform ProofHistory.apply(s)/current internally;
wenzelm
parents:
17513
diff
changeset

586 
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

587 
val proofs = proofs' o K; 
6689  588 
val proof = proof' o K; 
16815  589 

27601
6683cdb94af8
simplified commit_exit: operate on previous node of final state, include warning here;
wenzelm
parents:
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diff
changeset

590 
fun actual_proof f = transaction (fn _ => 
21007  591 
(fn Proof (prf, x) => Proof (f prf, x) 
20963
a7fd8f05a2be
added type global_theory  theory or local_theory;
wenzelm
parents:
20928
diff
changeset

592 
 _ => raise UNDEF)); 
16815  593 

27601
6683cdb94af8
simplified commit_exit: operate on previous node of final state, include warning here;
wenzelm
parents:
27583
diff
changeset

594 
fun skip_proof f = transaction (fn _ => 
21007  595 
(fn SkipProof (h, x) => SkipProof (f h, x) 
18563  596 
 _ => raise UNDEF)); 
597 

27601
6683cdb94af8
simplified commit_exit: operate on previous node of final state, include warning here;
wenzelm
parents:
27583
diff
changeset

598 
fun skip_proof_to_theory pred = transaction (fn _ => 
27564
fc6d34e49e17
replaced obsolete ProofHistory by ProofNode (backtracking only);
wenzelm
parents:
27500
diff
changeset

599 
(fn SkipProof (d, (gthy, _)) => if pred d then Theory (gthy, NONE) else raise UNDEF 
17904
21c6894b5998
simplified interfaces proof/proof' etc.: perform ProofHistory.apply(s)/current internally;
wenzelm
parents:
17513
diff
changeset

600 
 _ => raise UNDEF)); 
5828  601 

602 

603 

604 
(** toplevel transactions **) 

605 

27427  606 
(* identification *) 
607 

608 
fun get_id (Transition {pos, ...}) = Position.get_id pos; 

609 
fun put_id id (tr as Transition {pos, ...}) = position (Position.put_id id pos) tr; 

610 

611 

25960  612 
(* thread position *) 
25799  613 

25960  614 
fun setmp_thread_position (Transition {pos, ...}) f x = 
25819
e6feb08b7f4b
replaced thread_properties by simplified version in position.ML;
wenzelm
parents:
25809
diff
changeset

615 
Position.setmp_thread_data pos f x; 
25799  616 

27606  617 
fun status tr m = 
618 
setmp_thread_position tr (fn () => Output.status (Markup.markup m "")) (); 

619 

26602
5534b6a6b810
made purely valueoriented, moved global state to structure Isar (cf. isar.ML);
wenzelm
parents:
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diff
changeset

620 
fun error_msg tr exn_info = 
5534b6a6b810
made purely valueoriented, moved global state to structure Isar (cf. isar.ML);
wenzelm
parents:
26491
diff
changeset

621 
setmp_thread_position tr (fn () => Output.error_msg (exn_message (EXCURSION_FAIL exn_info))) (); 
5534b6a6b810
made purely valueoriented, moved global state to structure Isar (cf. isar.ML);
wenzelm
parents:
26491
diff
changeset

622 

25799  623 

28095
7eaf0813bdc3
added add_hook interface for posttransition hooks;
wenzelm
parents:
27859
diff
changeset

624 
(* posttransition hooks *) 
7eaf0813bdc3
added add_hook interface for posttransition hooks;
wenzelm
parents:
27859
diff
changeset

625 

28103
b79e61861f0f
simplified Toplevel.add_hook: cover successful transactions only;
wenzelm
parents:
28095
diff
changeset

626 
local val hooks = ref ([]: (transition > state > state > unit) list) in 
28095
7eaf0813bdc3
added add_hook interface for posttransition hooks;
wenzelm
parents:
27859
diff
changeset

627 

7eaf0813bdc3
added add_hook interface for posttransition hooks;
wenzelm
parents:
27859
diff
changeset

628 
fun add_hook f = CRITICAL (fn () => change hooks (cons f)); 
7eaf0813bdc3
added add_hook interface for posttransition hooks;
wenzelm
parents:
27859
diff
changeset

629 
fun get_hooks () = CRITICAL (fn () => ! hooks); 
7eaf0813bdc3
added add_hook interface for posttransition hooks;
wenzelm
parents:
27859
diff
changeset

630 

7eaf0813bdc3
added add_hook interface for posttransition hooks;
wenzelm
parents:
27859
diff
changeset

631 
end; 
7eaf0813bdc3
added add_hook interface for posttransition hooks;
wenzelm
parents:
27859
diff
changeset

632 

7eaf0813bdc3
added add_hook interface for posttransition hooks;
wenzelm
parents:
27859
diff
changeset

633 

5828  634 
(* apply transitions *) 
635 

6664  636 
local 
637 

25799  638 
fun app int (tr as Transition {trans, pos, int_only, print, no_timing, ...}) = 
25819
e6feb08b7f4b
replaced thread_properties by simplified version in position.ML;
wenzelm
parents:
25809
diff
changeset

639 
setmp_thread_position tr (fn state => 
25799  640 
let 
26621
78b3ad7af5d5
eliminated unused name_of, source, source_of, print', print3, three_buffersN;
wenzelm
parents:
26602
diff
changeset

641 
val _ = if not int andalso int_only then warning (command_msg "Interactiveonly " tr) else (); 
16682  642 

25799  643 
fun do_timing f x = (warning (command_msg "" tr); timeap f x); 
644 
fun do_profiling f x = profile (! profiling) f x; 

645 

26256
3e7939e978c6
added exception CONTEXT, indicating context of another exception;
wenzelm
parents:
26081
diff
changeset

646 
val (result, status) = 
25799  647 
state > (apply_trans int pos trans 
648 
> (if ! profiling > 0 andalso not no_timing then do_profiling else I) 

649 
> (if ! profiling > 0 orelse ! timing andalso not no_timing then do_timing else I)); 

26256
3e7939e978c6
added exception CONTEXT, indicating context of another exception;
wenzelm
parents:
26081
diff
changeset

650 

26621
78b3ad7af5d5
eliminated unused name_of, source, source_of, print', print3, three_buffersN;
wenzelm
parents:
26602
diff
changeset

651 
val _ = if int andalso not (! quiet) andalso print then print_state false result else (); 
26256
3e7939e978c6
added exception CONTEXT, indicating context of another exception;
wenzelm
parents:
26081
diff
changeset

652 
in (result, Option.map (fn UNDEF => type_error tr state  exn => exn) status) end); 
6664  653 

654 
in 

5828  655 

26602
5534b6a6b810
made purely valueoriented, moved global state to structure Isar (cf. isar.ML);
wenzelm
parents:
26491
diff
changeset

656 
fun transition int tr st = 
28095
7eaf0813bdc3
added add_hook interface for posttransition hooks;
wenzelm
parents:
27859
diff
changeset

657 
let 
7eaf0813bdc3
added add_hook interface for posttransition hooks;
wenzelm
parents:
27859
diff
changeset

658 
val hooks = get_hooks (); 
28103
b79e61861f0f
simplified Toplevel.add_hook: cover successful transactions only;
wenzelm
parents:
28095
diff
changeset

659 
fun apply_hooks st' = hooks > List.app (fn f => (try (fn () => f tr st st') (); ())); 
28095
7eaf0813bdc3
added add_hook interface for posttransition hooks;
wenzelm
parents:
27859
diff
changeset

660 

7eaf0813bdc3
added add_hook interface for posttransition hooks;
wenzelm
parents:
27859
diff
changeset

661 
val ctxt = try context_of st; 
7eaf0813bdc3
added add_hook interface for posttransition hooks;
wenzelm
parents:
27859
diff
changeset

662 
val res = 
7eaf0813bdc3
added add_hook interface for posttransition hooks;
wenzelm
parents:
27859
diff
changeset

663 
(case app int tr st of 
7eaf0813bdc3
added add_hook interface for posttransition hooks;
wenzelm
parents:
27859
diff
changeset

664 
(_, SOME TERMINATE) => NONE 
28103
b79e61861f0f
simplified Toplevel.add_hook: cover successful transactions only;
wenzelm
parents:
28095
diff
changeset

665 
 (st', SOME (EXCURSION_FAIL exn_info)) => SOME (st', SOME exn_info) 
b79e61861f0f
simplified Toplevel.add_hook: cover successful transactions only;
wenzelm
parents:
28095
diff
changeset

666 
 (st', SOME exn) => SOME (st', SOME (exn_context ctxt exn, at_command tr)) 
b79e61861f0f
simplified Toplevel.add_hook: cover successful transactions only;
wenzelm
parents:
28095
diff
changeset

667 
 (st', NONE) => SOME (st', NONE)); 
b79e61861f0f
simplified Toplevel.add_hook: cover successful transactions only;
wenzelm
parents:
28095
diff
changeset

668 
val _ = (case res of SOME (st', NONE) => apply_hooks st'  _ => ()); 
28095
7eaf0813bdc3
added add_hook interface for posttransition hooks;
wenzelm
parents:
27859
diff
changeset

669 
in res end; 
6664  670 

671 
end; 

5828  672 

673 

27601
6683cdb94af8
simplified commit_exit: operate on previous node of final state, include warning here;
wenzelm
parents:
27583
diff
changeset

674 
(* commit final exit *) 
6683cdb94af8
simplified commit_exit: operate on previous node of final state, include warning here;
wenzelm
parents:
27583
diff
changeset

675 

28425  676 
fun commit_exit pos = 
27601
6683cdb94af8
simplified commit_exit: operate on previous node of final state, include warning here;
wenzelm
parents:
27583
diff
changeset

677 
name "end" empty 
28425  678 
> position pos 
27601
6683cdb94af8
simplified commit_exit: operate on previous node of final state, include warning here;
wenzelm
parents:
27583
diff
changeset

679 
> add_trans CommitExit 
6683cdb94af8
simplified commit_exit: operate on previous node of final state, include warning here;
wenzelm
parents:
27583
diff
changeset

680 
> imperative (fn () => warning "Expected to find finished theory"); 
6683cdb94af8
simplified commit_exit: operate on previous node of final state, include warning here;
wenzelm
parents:
27583
diff
changeset

681 

6683cdb94af8
simplified commit_exit: operate on previous node of final state, include warning here;
wenzelm
parents:
27583
diff
changeset

682 

28425  683 
(* nested commands *) 
5828  684 

28425  685 
fun command tr st = 
27576
7afff36043e6
eliminated internal command history  superceeded by global Isar state (cf. isar.ML);
wenzelm
parents:
27564
diff
changeset

686 
(case transition (! interact) tr st of 
28425  687 
SOME (st', NONE) => st' 
688 
 SOME (_, SOME exn_info) => raise EXCURSION_FAIL exn_info 

27576
7afff36043e6
eliminated internal command history  superceeded by global Isar state (cf. isar.ML);
wenzelm
parents:
27564
diff
changeset

689 
 NONE => raise EXCURSION_FAIL (TERMINATE, at_command tr)); 
7afff36043e6
eliminated internal command history  superceeded by global Isar state (cf. isar.ML);
wenzelm
parents:
27564
diff
changeset

690 

28433
b3dab95f098f
begin_proof: avoid race condition wrt. skip_proofs flag;
wenzelm
parents:
28425
diff
changeset

691 

b3dab95f098f
begin_proof: avoid race condition wrt. skip_proofs flag;
wenzelm
parents:
28425
diff
changeset

692 
(* excursion of units, consisting of commands with proof *) 
b3dab95f098f
begin_proof: avoid race condition wrt. skip_proofs flag;
wenzelm
parents:
28425
diff
changeset

693 

28425  694 
fun command_result tr st = 
695 
let val st' = command tr st 

696 
in (st', st') end; 

17076  697 

28446
a01de3b3fa2e
renamed promise to future, tuned related interfaces;
wenzelm
parents:
28443
diff
changeset

698 
fun unit_result immediate (tr, proof_trs) st = 
28433
b3dab95f098f
begin_proof: avoid race condition wrt. skip_proofs flag;
wenzelm
parents:
28425
diff
changeset

699 
let val st' = command tr st in 
28453
06702e7acd1d
excursion/unit_result: no print for forked end, finish into global theory, pick resul from presentation context;
wenzelm
parents:
28451
diff
changeset

700 
if immediate orelse null proof_trs orelse 
06702e7acd1d
excursion/unit_result: no print for forked end, finish into global theory, pick resul from presentation context;
wenzelm
parents:
28451
diff
changeset

701 
not (can proof_of st') orelse Proof.is_relevant (proof_of st') 
28433
b3dab95f098f
begin_proof: avoid race condition wrt. skip_proofs flag;
wenzelm
parents:
28425
diff
changeset

702 
then 
28453
06702e7acd1d
excursion/unit_result: no print for forked end, finish into global theory, pick resul from presentation context;
wenzelm
parents:
28451
diff
changeset

703 
let val (states, st'') = fold_map command_result proof_trs st' 
06702e7acd1d
excursion/unit_result: no print for forked end, finish into global theory, pick resul from presentation context;
wenzelm
parents:
28451
diff
changeset

704 
in (fn () => (tr, st') :: (proof_trs ~~ states), st'') end 
06702e7acd1d
excursion/unit_result: no print for forked end, finish into global theory, pick resul from presentation context;
wenzelm
parents:
28451
diff
changeset

705 
else 
28433
b3dab95f098f
begin_proof: avoid race condition wrt. skip_proofs flag;
wenzelm
parents:
28425
diff
changeset

706 
let 
b3dab95f098f
begin_proof: avoid race condition wrt. skip_proofs flag;
wenzelm
parents:
28425
diff
changeset

707 
val (body_trs, end_tr) = split_last proof_trs; 
b3dab95f098f
begin_proof: avoid race condition wrt. skip_proofs flag;
wenzelm
parents:
28425
diff
changeset

708 
val body_states = ref ([]: state list); 
28453
06702e7acd1d
excursion/unit_result: no print for forked end, finish into global theory, pick resul from presentation context;
wenzelm
parents:
28451
diff
changeset

709 
val finish = Context.Theory o ProofContext.theory_of; 
28433
b3dab95f098f
begin_proof: avoid race condition wrt. skip_proofs flag;
wenzelm
parents:
28425
diff
changeset

710 
fun make_result prf = 
28453
06702e7acd1d
excursion/unit_result: no print for forked end, finish into global theory, pick resul from presentation context;
wenzelm
parents:
28451
diff
changeset

711 
let val (states, State (result_node, _)) = 
28433
b3dab95f098f
begin_proof: avoid race condition wrt. skip_proofs flag;
wenzelm
parents:
28425
diff
changeset

712 
(case st' of State (SOME (Proof (_, (_, orig_gthy)), exit), prev) 
28453
06702e7acd1d
excursion/unit_result: no print for forked end, finish into global theory, pick resul from presentation context;
wenzelm
parents:
28451
diff
changeset

713 
=> State (SOME (Proof (ProofNode.init prf, (finish, orig_gthy)), exit), prev)) 
06702e7acd1d
excursion/unit_result: no print for forked end, finish into global theory, pick resul from presentation context;
wenzelm
parents:
28451
diff
changeset

714 
> fold_map command_result body_trs 
06702e7acd1d
excursion/unit_result: no print for forked end, finish into global theory, pick resul from presentation context;
wenzelm
parents:
28451
diff
changeset

715 
> command (end_tr > set_print false) 
06702e7acd1d
excursion/unit_result: no print for forked end, finish into global theory, pick resul from presentation context;
wenzelm
parents:
28451
diff
changeset

716 
in body_states := states; presentation_context (Option.map #1 result_node) NONE end; 
06702e7acd1d
excursion/unit_result: no print for forked end, finish into global theory, pick resul from presentation context;
wenzelm
parents:
28451
diff
changeset

717 
val st'' = st' 
06702e7acd1d
excursion/unit_result: no print for forked end, finish into global theory, pick resul from presentation context;
wenzelm
parents:
28451
diff
changeset

718 
> command (end_tr > reset_trans > end_proof (K (Proof.future_proof make_result))); 
28433
b3dab95f098f
begin_proof: avoid race condition wrt. skip_proofs flag;
wenzelm
parents:
28425
diff
changeset

719 
in (fn () => (tr, st') :: (body_trs ~~ ! body_states) @ [(end_tr, st'')], st'') end 
b3dab95f098f
begin_proof: avoid race condition wrt. skip_proofs flag;
wenzelm
parents:
28425
diff
changeset

720 
end; 
b3dab95f098f
begin_proof: avoid race condition wrt. skip_proofs flag;
wenzelm
parents:
28425
diff
changeset

721 

b3dab95f098f
begin_proof: avoid race condition wrt. skip_proofs flag;
wenzelm
parents:
28425
diff
changeset

722 
fun excursion input = 
28425  723 
let 
28433
b3dab95f098f
begin_proof: avoid race condition wrt. skip_proofs flag;
wenzelm
parents:
28425
diff
changeset

724 
val end_pos = if null input then error "No input" else pos_of (fst (List.last input)); 
b3dab95f098f
begin_proof: avoid race condition wrt. skip_proofs flag;
wenzelm
parents:
28425
diff
changeset

725 

28446
a01de3b3fa2e
renamed promise to future, tuned related interfaces;
wenzelm
parents:
28443
diff
changeset

726 
val immediate = not (! future_scheduler) orelse Multithreading.max_threads_value () <= 1; 
a01de3b3fa2e
renamed promise to future, tuned related interfaces;
wenzelm
parents:
28443
diff
changeset

727 
val (future_results, end_state) = fold_map (unit_result immediate) input toplevel; 
28433
b3dab95f098f
begin_proof: avoid race condition wrt. skip_proofs flag;
wenzelm
parents:
28425
diff
changeset

728 
val _ = 
b3dab95f098f
begin_proof: avoid race condition wrt. skip_proofs flag;
wenzelm
parents:
28425
diff
changeset

729 
(case end_state of 
b3dab95f098f
begin_proof: avoid race condition wrt. skip_proofs flag;
wenzelm
parents:
28425
diff
changeset

730 
State (NONE, SOME (Theory (Context.Theory thy, _), _)) => Thm.join_futures thy 
b3dab95f098f
begin_proof: avoid race condition wrt. skip_proofs flag;
wenzelm
parents:
28425
diff
changeset

731 
 _ => error "Unfinished development at end of input"); 
b3dab95f098f
begin_proof: avoid race condition wrt. skip_proofs flag;
wenzelm
parents:
28425
diff
changeset

732 
val results = maps (fn res => res ()) future_results; 
b3dab95f098f
begin_proof: avoid race condition wrt. skip_proofs flag;
wenzelm
parents:
28425
diff
changeset

733 
in (results, fn () => ignore (command (commit_exit end_pos) end_state)) end; 
7062  734 

6664  735 
end; 