theory Eisbach_Tools
imports Eisbach
begin
ML ‹
local
fun trace_method parser print =
Scan.lift (Args.mode "dummy") -- parser >>
(fn (dummy, x) => fn ctxt => SIMPLE_METHOD (fn st =>
(if dummy orelse not (Method.detect_closure_state st)
then tracing (print ctxt x) else ();
all_tac st)));
fun setup_trace_method binding parser print =
Method.setup binding
(trace_method parser (fn ctxt => fn x => Binding.name_of binding ^ ": " ^ print ctxt x))
"";
in
val _ =
Theory.setup
(setup_trace_method \<^binding>‹print_fact›
(Scan.lift (Scan.ahead Parse.not_eof) -- Attrib.thms)
(fn ctxt => fn (tok, thms) =>
(* FIXME proper formatting!? *)
Token.unparse tok ^ ": " ^ commas (map (Thm.string_of_thm ctxt) thms)) #>
setup_trace_method \<^binding>‹print_term›
(Scan.lift (Scan.ahead Parse.not_eof) -- Args.term)
(fn ctxt => fn (tok, t) =>
(* FIXME proper formatting!? *)
Token.unparse tok ^ ": " ^ Syntax.string_of_term ctxt t) #>
setup_trace_method \<^binding>‹print_type›
(Scan.lift (Scan.ahead Parse.not_eof) -- Args.typ)
(fn ctxt => fn (tok, t) =>
(* FIXME proper formatting!? *)
Token.unparse tok ^ ": " ^ Syntax.string_of_typ ctxt t));
end
›
ML ‹
fun try_map v seq =
(case try Seq.pull seq of
SOME (SOME (x, seq')) => Seq.make (fn () => SOME(x, try_map v seq'))
| SOME NONE => Seq.empty
| NONE => v);
›
method_setup catch = ‹
Method.text_closure -- Method.text_closure >>
(fn (text, text') => fn ctxt => fn using => fn st =>
let
val method = Method.evaluate_runtime text ctxt using;
val backup_results = Method.evaluate_runtime text' ctxt using st;
in
(case try method st of
SOME seq => try_map backup_results seq
| NONE => backup_results)
end)
›
ML ‹
fun uncurry_rule thm = Conjunction.uncurry_balanced (Thm.nprems_of thm) thm;
fun curry_rule thm =
if Thm.no_prems thm then thm
else
let val conjs = Logic.dest_conjunctions (Thm.major_prem_of thm);
in Conjunction.curry_balanced (length conjs) thm end;
›
attribute_setup uncurry = ‹Scan.succeed (Thm.rule_attribute [] (K uncurry_rule))›
attribute_setup curry = ‹Scan.succeed (Thm.rule_attribute [] (K curry_rule))›
end