author  wenzelm 
Mon, 25 Feb 2008 19:48:06 +0100  
changeset 26138  dc578de1d3e9 
parent 24562  fc3cf01e8af1 
child 26185  e53165319347 
permissions  rwrr 
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(* Title: Pure/Thy/thm_deps.ML 
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ID: $Id$ 
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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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signature BASIC_THM_DEPS = 
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sig 
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val thm_deps : thm list > unit 
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end; 
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signature THM_DEPS = 
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sig 
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include BASIC_THM_DEPS 
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val enable : unit > unit 
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val disable : unit > unit 
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end; 
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structure ThmDeps : THM_DEPS = 
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struct 
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open Proofterm; 
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fun enable () = if ! proofs = 0 then proofs := 1 else (); 
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fun disable () = proofs := 0; 
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fun dest_thm_axm (PThm (name, prf, _, _)) = (name, prf) 
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 dest_thm_axm (PAxm (name, _, _)) = (name ^ " (Ax)", MinProof ([], [], [])) 
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 dest_thm_axm _ = ("", MinProof ([], [], [])); 
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fun make_deps_graph (AbsP (_, _, prf)) = make_deps_graph prf 
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 make_deps_graph (Abst (_, _, prf)) = make_deps_graph prf 
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 make_deps_graph (prf1 %% prf2) = make_deps_graph prf1 #> make_deps_graph prf2 
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 make_deps_graph (prf % _) = make_deps_graph prf 
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 make_deps_graph (MinProof (thms, axms, _)) = 
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fold (make_deps_graph o Proofterm.proof_of_min_thm) thms #> 
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fold (make_deps_graph o Proofterm.proof_of_min_axm) axms 
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 make_deps_graph prf = (fn p as (gra, parents) => 
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let val (name, prf') = dest_thm_axm prf 
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in 
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if name <> "" then 
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if not (Symtab.defined gra name) then 
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let 
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val (gra', parents') = make_deps_graph prf' (gra, []); 
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val prefx = #1 (Library.split_last (NameSpace.explode name)); 
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val session = 
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(case prefx of 

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(x :: _) => 

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(case ThyInfo.lookup_theory x of 

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SOME thy => 
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let val name = Present.session_name thy 
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in if name = "" then [] else [name] end 
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 NONE => []) 
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 _ => ["global"]); 
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in 

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if member (op =) parents' name then (gra', parents union parents') 
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else (Symtab.update (name, 
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{name = Sign.base_name name, ID = name, 
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dir = space_implode "/" (session @ prefx), 

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unfold = false, path = "", parents = parents'}) gra', 
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insert (op =) name parents) 
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end 
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else (gra, insert (op =) name parents) 
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else 
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make_deps_graph prf' (gra, parents) 
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end); 
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fun thm_deps thms = 
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Present.display_graph 
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(map snd (sort_wrt fst (Symtab.dest (fst 
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(fold make_deps_graph (map Thm.proof_of thms) (Symtab.empty, [])))))); 

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end; 
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structure BasicThmDeps : BASIC_THM_DEPS = ThmDeps; 
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open BasicThmDeps; 