src/Pure/context_position.ML
author wenzelm
Fri Jul 17 21:40:47 2015 +0200 (2015-07-17)
changeset 60749 f727b99faaf7
parent 57858 39d9c7f175e0
child 60858 7bf2188a0998
permissions -rw-r--r--
skeleton for interactive debugger;
     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 is_really_visible: Proof.context -> bool
    15   val not_really: Proof.context -> Proof.context
    16   val restore_visible: Proof.context -> Proof.context -> Proof.context
    17   val restore_visible_global: theory -> theory -> theory
    18   val is_reported_generic: Context.generic -> Position.T -> bool
    19   val is_reported: Proof.context -> Position.T -> bool
    20   val report_generic: Context.generic -> Position.T -> Markup.T -> unit
    21   val reported_text: Proof.context -> Position.T -> Markup.T -> string -> string
    22   val report_text: Proof.context -> Position.T -> Markup.T -> string -> unit
    23   val report: Proof.context -> Position.T -> Markup.T -> unit
    24   val reports_text: Proof.context -> Position.report_text list -> unit
    25   val reports: Proof.context -> Position.report list -> unit
    26 end;
    27 
    28 structure Context_Position: CONTEXT_POSITION =
    29 struct
    30 
    31 structure Data = Generic_Data
    32 (
    33   type T = bool option * bool option;  (*really, visible*)
    34   val empty: T = (NONE, NONE);
    35   val extend = I;
    36   fun merge ((a, b), (a', b')) : T = (merge_options (a, a'), merge_options (b, b'));
    37 );
    38 
    39 val is_visible_generic = the_default true o snd o Data.get;
    40 val is_visible = is_visible_generic o Context.Proof;
    41 val is_visible_global = is_visible_generic o Context.Theory;
    42 
    43 val set_visible = Context.proof_map o Data.map o apsnd o K o SOME;
    44 val set_visible_global = Context.theory_map o Data.map o apsnd o K o SOME;
    45 
    46 val is_really = the_default true o fst o Data.get o Context.Proof;
    47 fun is_really_visible ctxt = is_really ctxt andalso is_visible ctxt;
    48 val not_really = Context.proof_map (Data.map (apfst (K (SOME false))));
    49 
    50 val restore_visible = Context.proof_map o Data.put o Data.get o Context.Proof;
    51 val restore_visible_global = Context.theory_map o Data.put o Data.get o Context.Theory;
    52 
    53 fun is_reported_generic context pos = is_visible_generic context andalso Position.is_reported pos;
    54 fun is_reported ctxt pos = is_visible ctxt andalso Position.is_reported pos;
    55 
    56 fun report_generic context pos markup =
    57   if is_reported_generic context pos then
    58     Output.report [Position.reported_text pos markup ""]
    59   else ();
    60 
    61 fun reported_text ctxt pos markup txt =
    62   if is_reported ctxt pos then Position.reported_text pos markup txt else "";
    63 
    64 fun report_text ctxt pos markup txt = Output.report [reported_text ctxt pos markup txt];
    65 fun report ctxt pos markup = report_text ctxt pos markup "";
    66 
    67 fun reports_text ctxt reps = if is_visible ctxt then Position.reports_text reps else ();
    68 fun reports ctxt reps = if is_visible ctxt then Position.reports reps else ();
    69 
    70 end;