formal pretty bodies for class specifications, accepting additional formal bookkeeping in locale.ML
(* Title: Pure/Tools/class_deps.ML
Author: Florian Haftmann, TU Muenchen
Visualization of class dependencies.
*)
signature CLASS_DEPS =
sig
val class_deps: Proof.context -> sort -> sort option -> unit
val class_deps_cmd: Proof.context -> string -> string option -> unit
end;
structure Class_Deps: CLASS_DEPS =
struct
fun gen_visualize prep_sort ctxt raw_super raw_sub =
let
val thy = Proof_Context.theory_of ctxt;
val super = prep_sort ctxt raw_super;
val sub = Option.map (prep_sort ctxt) raw_sub;
val {classes = (space, original_algebra), ...} = Type.rep_tsig (Proof_Context.tsig_of ctxt);
fun le_super class = Sorts.sort_le original_algebra ([class], super);
val sub_le =
(case sub of
NONE => K true
| SOME sub => fn class => Sorts.sort_le original_algebra (sub, [class]));
val (_, algebra) =
Sorts.subalgebra (Context.pretty ctxt)
(le_super andf sub_le) (K NONE) original_algebra;
fun pretty_body_of c = if Class.is_class thy c then Class.pretty_body thy c else [];
in
Sorts.classes_of algebra
|> Graph.dest
|> map (fn ((c, _), ds) =>
((c, Graph_Display.content_node (Name_Space.extern ctxt space c) (pretty_body_of c)), ds))
|> Graph_Display.display_graph
end;
val class_deps = gen_visualize (Type.cert_sort o Proof_Context.tsig_of);
val class_deps_cmd = gen_visualize Syntax.read_sort;
val _ =
Outer_Syntax.command @{command_spec "class_deps"} "visualize class dependencies"
((Scan.optional Parse.sort "{}" -- Scan.option Parse.sort) >> (fn (super, sub) =>
(Toplevel.unknown_theory o
Toplevel.keep (fn st => class_deps_cmd (Toplevel.context_of st) super sub))));
end;