src/Pure/context_position.ML
author wenzelm
Sat Nov 04 15:24:40 2017 +0100 (23 months ago)
changeset 67003 49850a679c2c
parent 63030 4e7eff53bee7
permissions -rw-r--r--
more robust sorted_entries;
     1 (*  Title:      Pure/context_position.ML
     2     Author:     Makarius
     3 
     4 Context position visibility flag.
     5 *)
     6 
     7 signature CONTEXT_POSITION =
     8 sig
     9   val is_visible_generic: Context.generic -> bool
    10   val is_visible: Proof.context -> bool
    11   val is_visible_global: theory -> bool
    12   val set_visible_generic: bool -> Context.generic -> Context.generic
    13   val set_visible: bool -> Proof.context -> Proof.context
    14   val set_visible_global: bool -> theory -> theory
    15   val is_really_visible: Proof.context -> bool
    16   val not_really: Proof.context -> Proof.context
    17   val restore_visible_generic: Context.generic -> Context.generic -> Context.generic
    18   val restore_visible: Proof.context -> Proof.context -> Proof.context
    19   val restore_visible_global: theory -> theory -> theory
    20   val is_reported_generic: Context.generic -> Position.T -> bool
    21   val is_reported: Proof.context -> Position.T -> bool
    22   val report_generic: Context.generic -> Position.T -> Markup.T -> unit
    23   val reported_text: Proof.context -> Position.T -> Markup.T -> string -> string
    24   val report_text: Proof.context -> Position.T -> Markup.T -> string -> unit
    25   val report: Proof.context -> Position.T -> Markup.T -> unit
    26   val reports_text: Proof.context -> Position.report_text list -> unit
    27   val reports: Proof.context -> Position.report list -> unit
    28 end;
    29 
    30 structure Context_Position: CONTEXT_POSITION =
    31 struct
    32 
    33 structure Data = Generic_Data
    34 (
    35   type T = bool option * bool option;  (*really, visible*)
    36   val empty: T = (NONE, NONE);
    37   val extend = I;
    38   fun merge ((a, b), (a', b')) : T = (merge_options (a, a'), merge_options (b, b'));
    39 );
    40 
    41 val is_visible_generic = the_default true o snd o Data.get;
    42 val is_visible = is_visible_generic o Context.Proof;
    43 val is_visible_global = is_visible_generic o Context.Theory;
    44 
    45 val set_visible_generic = Data.map o apsnd o K o SOME;
    46 val set_visible = Context.proof_map o Data.map o apsnd o K o SOME;
    47 val set_visible_global = Context.theory_map o Data.map o apsnd o K o SOME;
    48 
    49 val is_really = the_default true o fst o Data.get o Context.Proof;
    50 fun is_really_visible ctxt = is_really ctxt andalso is_visible ctxt;
    51 val not_really = Context.proof_map (Data.map (apfst (K (SOME false))));
    52 
    53 val restore_visible_generic = Data.put o Data.get;
    54 val restore_visible = Context.proof_map o Data.put o Data.get o Context.Proof;
    55 val restore_visible_global = Context.theory_map o Data.put o Data.get o Context.Theory;
    56 
    57 fun is_reported_generic context pos = is_visible_generic context andalso Position.is_reported pos;
    58 fun is_reported ctxt pos = is_visible ctxt andalso Position.is_reported pos;
    59 
    60 fun report_generic context pos markup =
    61   if is_reported_generic context pos then
    62     Output.report [Position.reported_text pos markup ""]
    63   else ();
    64 
    65 fun reported_text ctxt pos markup txt =
    66   if is_reported ctxt pos then Position.reported_text pos markup txt else "";
    67 
    68 fun report_text ctxt pos markup txt = Output.report [reported_text ctxt pos markup txt];
    69 fun report ctxt pos markup = report_text ctxt pos markup "";
    70 
    71 fun reports_text ctxt reps = if is_visible ctxt then Position.reports_text reps else ();
    72 fun reports ctxt reps = if is_visible ctxt then Position.reports reps else ();
    73 
    74 end;