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(* Title: HOL/Nunchaku/Tools/nunchaku_display.ML
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Author: Jasmin Blanchette, Inria Nancy, LORIA, MPII
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Copyright 2015, 2016
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Pretty printing of Isabelle/HOL models for Nunchaku.
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*)
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signature NUNCHAKU_DISPLAY =
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sig
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type isa_model = Nunchaku_Reconstruct.isa_model
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val pretty_of_isa_model_opt: Proof.context -> isa_model option -> Pretty.T
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end;
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structure Nunchaku_Display : NUNCHAKU_DISPLAY =
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struct
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open Nunchaku_Util;
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open Nunchaku_Reconstruct;
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val indent_size = 2;
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val pretty_indent = Pretty.indent indent_size;
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fun sorting_str_of_typ (TFree (s, _)) = "a" ^ s
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| sorting_str_of_typ (Type (s, Ts)) = "b" ^ s ^ space_implode " " (map sorting_str_of_typ Ts)
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| sorting_str_of_typ (TVar _) = "X";
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fun sorting_str_of_term (Const (s, T)) = "b" ^ s ^ sorting_str_of_typ T
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| sorting_str_of_term (Free (s, _)) = "a" ^ s
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| sorting_str_of_term (t $ u) = sorting_str_of_term t ^ " " ^ sorting_str_of_term u
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| sorting_str_of_term (Abs (_, T, t)) = "c" ^ sorting_str_of_typ T ^ " " ^ sorting_str_of_term t
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| sorting_str_of_term _ = "X";
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fun pretty_of_isa_model_opt _ NONE =
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pretty_indent (Pretty.str "Model unavailable (internal error)")
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| pretty_of_isa_model_opt ctxt0
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(SOME {type_model, free_model, pat_complete_model, pat_incomplete_model, skolem_model}) =
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let
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val ctxt = ctxt0 |> Config.put show_question_marks false;
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val pat_incomplete_model' = pat_incomplete_model
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|> filter_out (can (fn Const (@{const_name unreachable}, _) => ()) o fst);
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fun pretty_of_typ_entry (T, atoms) =
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Pretty.block (Pretty.breaks [Syntax.pretty_typ ctxt T, Pretty.str "=",
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Pretty.enum "," "{" "}" (map (Syntax.pretty_term ctxt) atoms)]);
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fun pretty_of_term_entry (t, value) =
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let
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val no_types_ctxt = ctxt |> Config.put show_types false;
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val schematic_ctxt = ctxt |> Proof_Context.set_mode Proof_Context.mode_schematic;
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val show_types = Config.get ctxt show_types;
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val value' = value |> perhaps (try (Syntax.check_term schematic_ctxt));
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val T = fastype_of t;
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val T' = if T = dummyT then try fastype_of value' |> the_default T else T;
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val t' = t |> show_types ? Type.constraint T';
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in
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Pretty.block (Pretty.breaks
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[Syntax.pretty_term ctxt t'
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|> (show_types andalso T' <> dummyT) ? (single #> Pretty.enclose "(" ")"),
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Pretty.str "=", Syntax.pretty_term no_types_ctxt value'])
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end;
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fun chunks_of_entries sorting_str_of pretty_of title entries =
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if not (null entries) then
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(if title = "" then [] else [Pretty.str (title ^ plural_s_for_list entries ^ ":")]) @
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map (pretty_indent o pretty_of) (sort_by (sorting_str_of o fst) entries)
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else
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[];
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val chunks =
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(if null free_model then
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[pretty_indent (Pretty.str "No free variables")]
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else
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chunks_of_entries sorting_str_of_term pretty_of_term_entry "" free_model) @
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chunks_of_entries sorting_str_of_term pretty_of_term_entry "Skolem constant" skolem_model @
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chunks_of_entries sorting_str_of_term pretty_of_term_entry "Underspecified constant"
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pat_incomplete_model' @
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(if Config.get ctxt show_consts then
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chunks_of_entries sorting_str_of_term pretty_of_term_entry "Fully specified constant"
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pat_complete_model
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else
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[]) @
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chunks_of_entries sorting_str_of_typ pretty_of_typ_entry "Type" type_model;
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in
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Pretty.chunks chunks
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end;
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end;
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