author | wenzelm |
Thu, 14 Aug 2014 10:48:40 +0200 | |
changeset 57934 | 5e500c0e7eca |
parent 49561 | src/Pure/Thy/thm_deps.ML@26fc70e983c2 |
child 58028 | e4250d370657 |
permissions | -rw-r--r-- |
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(* Title: Pure/Tools/thm_deps.ML |
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Author: Stefan Berghofer, TU Muenchen |
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Visualize dependencies of theorems. |
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*) |
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New function thm_deps for visualizing dependencies of theorems.
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signature THM_DEPS = |
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sig |
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thm_deps/unused_thms: Context.get_theory based on proper theory ancestry, not accidental theory loader state;
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val thm_deps: theory -> thm list -> unit |
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val unused_thms: theory list * theory list -> (string * thm) list |
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end; |
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structure Thm_Deps: THM_DEPS = |
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struct |
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(* thm_deps *) |
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||
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fun thm_deps thy thms = |
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let |
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fun add_dep ("", _, _) = I |
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| add_dep (name, _, PBody {thms = thms', ...}) = |
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let |
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val prefix = #1 (split_last (Long_Name.explode name)); |
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val session = |
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(case prefix of |
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a :: _ => |
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(case try (Context.get_theory thy) a of |
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SOME thy => |
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(case Present.session_name thy of |
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"" => [] |
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| session => [session]) |
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| NONE => []) |
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| _ => ["global"]); |
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val parents = filter_out (fn s => s = "") (map (#1 o #2) thms'); |
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val entry = |
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{name = Long_Name.base_name name, |
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ID = name, |
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dir = space_implode "/" (session @ prefix), |
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unfold = false, |
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path = "", |
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parents = parents, |
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content = []}; |
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in cons entry end; |
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val deps = Proofterm.fold_body_thms add_dep (Thm.proof_bodies_of thms) []; |
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in Graph_Display.display_graph (sort_wrt #ID deps) end; |
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val _ = |
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Outer_Syntax.improper_command @{command_spec "thm_deps"} "visualize theorem dependencies" |
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(Parse_Spec.xthms1 >> (fn args => |
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Toplevel.unknown_theory o Toplevel.keep (fn state => |
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thm_deps (Toplevel.theory_of state) (Attrib.eval_thms (Toplevel.context_of state) args)))); |
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(* unused_thms *) |
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fun unused_thms (base_thys, thys) = |
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let |
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fun add_fact space (name, ths) = |
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if exists (fn thy => Global_Theory.defined_fact thy name) base_thys then I |
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else |
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let val {concealed, group, ...} = Name_Space.the_entry space name in |
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fold_rev (fn th => |
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(case Thm.derivation_name th of |
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"" => I |
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| a => cons (a, (th, concealed, group)))) ths |
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end; |
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fun add_facts facts = Facts.fold_static (add_fact (Facts.space_of facts)) facts; |
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val new_thms = |
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fold (add_facts o Global_Theory.facts_of) thys [] |
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|> sort_distinct (string_ord o pairself #1); |
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val used = |
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Proofterm.fold_body_thms |
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(fn (a, _, _) => a <> "" ? Symtab.update (a, ())) |
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(map Proofterm.strip_thm (Thm.proof_bodies_of (map (#1 o #2) new_thms))) |
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Symtab.empty; |
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fun is_unused a = not (Symtab.defined used a); |
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(*groups containing at least one used theorem*) |
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val used_groups = fold (fn (a, (_, _, group)) => |
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if is_unused a then I |
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else |
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(case group of |
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NONE => I |
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| SOME grp => Inttab.update (grp, ()))) new_thms Inttab.empty; |
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val (thms', _) = fold (fn (a, (th, concealed, group)) => fn q as (thms, seen_groups) => |
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if not concealed andalso |
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(* FIXME replace by robust treatment of thm groups *) |
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member (op =) [Thm.theoremK, Thm.lemmaK, Thm.corollaryK] (Thm.legacy_get_kind th) andalso |
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is_unused a |
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then |
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(case group of |
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NONE => ((a, th) :: thms, seen_groups) |
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| SOME grp => |
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if Inttab.defined used_groups grp orelse |
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Inttab.defined seen_groups grp then q |
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else ((a, th) :: thms, Inttab.update (grp, ()) seen_groups)) |
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else q) new_thms ([], Inttab.empty); |
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in rev thms' end; |
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val _ = |
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Outer_Syntax.improper_command @{command_spec "unused_thms"} "find unused theorems" |
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(Scan.option ((Scan.repeat1 (Scan.unless Parse.minus Parse.name) --| Parse.minus) -- |
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Scan.option (Scan.repeat1 (Scan.unless Parse.minus Parse.name))) >> (fn opt_range => |
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Toplevel.keep (fn state => |
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let |
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val thy = Toplevel.theory_of state; |
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val ctxt = Toplevel.context_of state; |
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fun pretty_thm (a, th) = Proof_Context.pretty_fact ctxt (a, [th]); |
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val get_theory = Context.get_theory thy; |
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in |
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unused_thms |
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(case opt_range of |
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NONE => (Theory.parents_of thy, [thy]) |
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| SOME (xs, NONE) => (map get_theory xs, [thy]) |
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| SOME (xs, SOME ys) => (map get_theory xs, map get_theory ys)) |
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|> map pretty_thm |> Pretty.writeln_chunks |
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end))); |
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end; |
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