66 lines
2.8 KiB
Standard ML
66 lines
2.8 KiB
Standard ML
(*
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* Copyright 2020, Data61, CSIRO (ABN 41 687 119 230)
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*)
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signature OLD_DEFS=
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sig
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end
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structure Old_Defs : OLD_DEFS =
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struct
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fun read ctxt (b, str) =
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Syntax.read_prop ctxt str handle ERROR msg =>
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cat_error msg ("The error(s) above occurred in definition " ^ Binding.print b);
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fun add_defs ctxt ((unchecked, overloaded), args) thy =
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(legacy_feature "Old 'defs' command -- use 'definition' (with 'overloading') instead";
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thy |>
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(if unchecked then Global_Theory.add_defs_unchecked else Global_Theory.add_defs)
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overloaded
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(map (fn ((b, ax), srcs) => ((b, read ctxt (b, ax)), map (Attrib.attribute_cmd ctxt) srcs)) args));
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val opt_unchecked_overloaded =
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Scan.optional (@{keyword "("} |-- Parse.!!!
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(((@{keyword "unchecked"} >> K true) --
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Scan.optional (@{keyword "overloaded"} >> K true) false ||
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@{keyword "overloaded"} >> K (false, true)) --| @{keyword ")"})) (false, false);
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fun syntax_alias global_alias local_alias b name =
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Local_Theory.declaration {syntax = true, pos = Position.none, pervasive = true} (fn phi =>
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let val b' = Morphism.binding phi b
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in Context.mapping (global_alias b' name) (local_alias b' name) end);
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val const_alias = syntax_alias Sign.const_alias Proof_Context.const_alias;
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(* Proof_Context.fact_alias doesn't work here, so we need to play a few tricks to get the right fact name *)
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val _ =
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Outer_Syntax.command @{command_keyword defs} "define constants"
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(Parse.opt_target -- (opt_unchecked_overloaded --
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Scan.repeat1 (Parse_Spec.thm_name ":" -- Parse.prop >> (fn ((x, y), z) => ((x, z), y))))
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>> (fn (target, (b, args)) => Toplevel.local_theory NONE target (fn lthy =>
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let
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val args' = map (fn ((b, def), x) => ((Binding.suffix_name "__internal__" b, def), x)) args
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val (thms, lthy') = Local_Theory.background_theory_result (add_defs lthy (b, args')) lthy;
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val lthy'' = fold2 (fn ((b, _), _) => fn thm =>
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fn lthy =>
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let val (_, lthy') = Local_Theory.note ((b,[]), [thm]) lthy
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in lthy' end) args thms lthy';
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val lthy''' = Local_Theory.raw_theory (fold (fn thm =>
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Global_Theory.hide_fact true (Thm.derivation_name thm)) thms) lthy''
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in lthy''' end)));
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val _ =
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Outer_Syntax.command @{command_keyword consts'} "localized consts declaration"
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(Parse.opt_target -- Scan.repeat1 Parse.const_binding >>
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(fn (target, bs) => Toplevel.local_theory NONE target (fn lthy =>
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fold (fn (b, raw_typ, mixfix) => fn lthy =>
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let val (Const (nm, _), lthy') = Local_Theory.background_theory_result
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(Sign.declare_const lthy ((b, Syntax.read_typ lthy raw_typ), mixfix)) lthy;
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in const_alias b nm lthy' end) bs lthy)))
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end
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