src/Pure/context_position.ML
author blanchet
Mon May 19 23:43:53 2014 +0200 (2014-05-19)
changeset 57008 10f68b83b474
parent 56333 38f1422ef473
child 57858 39d9c7f175e0
permissions -rw-r--r--
use E 1.8's auto scheduler option
     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: bool -> Proof.context -> Proof.context
    13   val set_visible_global: bool -> theory -> theory
    14   val restore_visible: Proof.context -> Proof.context -> Proof.context
    15   val restore_visible_global: theory -> theory -> theory
    16   val is_reported_generic: Context.generic -> Position.T -> bool
    17   val is_reported: Proof.context -> Position.T -> bool
    18   val report_generic: Context.generic -> Position.T -> Markup.T -> unit
    19   val reported_text: Proof.context -> Position.T -> Markup.T -> string -> string
    20   val report_text: Proof.context -> Position.T -> Markup.T -> string -> unit
    21   val report: Proof.context -> Position.T -> Markup.T -> unit
    22   val reports_text: Proof.context -> Position.report_text list -> unit
    23   val reports: Proof.context -> Position.report list -> unit
    24 end;
    25 
    26 structure Context_Position: CONTEXT_POSITION =
    27 struct
    28 
    29 structure Data = Generic_Data
    30 (
    31   type T = bool option;
    32   val empty: T = NONE;
    33   val extend = I;
    34   fun merge (x, y): T = if is_some x then x else y;
    35 );
    36 
    37 val is_visible_generic = the_default true o Data.get;
    38 val is_visible = is_visible_generic o Context.Proof;
    39 val is_visible_global = is_visible_generic o Context.Theory;
    40 
    41 val set_visible = Context.proof_map o Data.put o SOME;
    42 val set_visible_global = Context.theory_map o Data.put o SOME;
    43 
    44 val restore_visible = set_visible o is_visible;
    45 val restore_visible_global = set_visible_global o is_visible_global;
    46 
    47 fun is_reported_generic context pos = is_visible_generic context andalso Position.is_reported pos;
    48 fun is_reported ctxt pos = is_visible ctxt andalso Position.is_reported pos;
    49 
    50 fun report_generic context pos markup =
    51   if is_reported_generic context pos then
    52     Output.report [Position.reported_text pos markup ""]
    53   else ();
    54 
    55 fun reported_text ctxt pos markup txt =
    56   if is_reported ctxt pos then Position.reported_text pos markup txt else "";
    57 
    58 fun report_text ctxt pos markup txt = Output.report [reported_text ctxt pos markup txt];
    59 fun report ctxt pos markup = report_text ctxt pos markup "";
    60 
    61 fun reports_text ctxt reps = if is_visible ctxt then Position.reports_text reps else ();
    62 fun reports ctxt reps = if is_visible ctxt then Position.reports reps else ();
    63 
    64 end;