author | wenzelm |
Fri, 20 Mar 2015 14:48:04 +0100 | |
changeset 59763 | 56d2c357e6b5 |
parent 59184 | 830bb7ddb3ab |
child 59936 | b8ffc3dc9e24 |
permissions | -rw-r--r-- |
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(* Title: Tools/solve_direct.ML |
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Author: Timothy Bourke and Gerwin Klein, NICTA |
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Check whether a newly stated theorem can be solved directly by an |
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existing theorem. Duplicate lemmas can be detected in this way. |
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The implementation relies critically on the Find_Theorems solves |
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feature. |
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*) |
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signature SOLVE_DIRECT = |
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sig |
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added "try" command, to launch Solve Direct, Quickcheck, Nitpick, Sledgehammer, and Try Methods
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val solve_directN: string |
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val someN: string |
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val noneN: string |
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val unknownN: string |
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val max_solutions: int Unsynchronized.ref |
58892
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eliminated obsolete Proof.goal_message -- print outcome more directly;
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val solve_direct: Proof.state -> bool * (string * string list) |
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end; |
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structure Solve_Direct: SOLVE_DIRECT = |
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struct |
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datatype mode = Auto_Try | Try | Normal |
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val solve_directN = "solve_direct"; |
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val someN = "some"; |
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val noneN = "none"; |
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val unknownN = "none"; |
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52701
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guard unify tracing via visible status of global theory;
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(* preferences *) |
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val max_solutions = Unsynchronized.ref 5; |
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some rearangement of load order to keep preferences adjacent -- slightly fragile;
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(* solve_direct command *) |
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fun do_solve_direct mode state = |
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let |
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val ctxt = Proof.context_of state; |
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val find_ctxt = if mode = Auto_Try then Context_Position.set_visible false ctxt else ctxt; |
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val crits = [(true, Find_Theorems.Solves)]; |
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fun find g = |
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snd (Find_Theorems.find_theorems find_ctxt (SOME g) (SOME (! max_solutions)) false crits); |
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fun prt_result (goal, results) = |
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let |
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val msg = |
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(if mode = Auto_Try then "Auto " else "") ^ solve_directN ^ ": " ^ |
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(case goal of |
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NONE => "The current goal" |
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| SOME sg => Syntax.string_of_term ctxt (Thm.term_of sg)); |
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in |
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Pretty.big_list |
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(msg ^ " can be solved directly with") |
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(map (Find_Theorems.pretty_thm ctxt) results) |
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end; |
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fun seek_against_goal () = |
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(case try Proof.simple_goal state of |
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NONE => NONE |
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| SOME {goal = st, ...} => |
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let |
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replaced Proof.get_goal state by Proof.flat_goal state, which provides the standard view on goals for (semi)automated tools;
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val subgoals = Drule.strip_imp_prems (Thm.cprop_of st); |
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val rs = |
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if length subgoals = 1 |
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32860
a4ab5d0cccd1
replaced Proof.get_goal state by Proof.flat_goal state, which provides the standard view on goals for (semi)automated tools;
wenzelm
parents:
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then [(NONE, find st)] |
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else map (fn sg => (SOME sg, find (Goal.init sg))) subgoals; |
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val results = filter_out (null o snd) rs; |
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in if null results then NONE else SOME results end); |
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fun message results = separate (Pretty.brk 0) (map prt_result results); |
40116
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introduced manual version of "Auto Solve" as "solve_direct"
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parents:
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in |
9ed3711366c8
introduced manual version of "Auto Solve" as "solve_direct"
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(case try seek_against_goal () of |
9ed3711366c8
introduced manual version of "Auto Solve" as "solve_direct"
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parents:
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SOME (SOME results) => |
43020
abb5d1f907e4
added "try" command, to launch Solve Direct, Quickcheck, Nitpick, Sledgehammer, and Try Methods
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(someN, |
59184
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explicit message channels for "state", "information";
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let val msg = Pretty.string_of (Pretty.chunks (message results)) |
830bb7ddb3ab
explicit message channels for "state", "information";
wenzelm
parents:
58893
diff
changeset
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in if mode = Auto_Try then [msg] else (writeln msg; []) end) |
43025
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| SOME NONE => |
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(if mode = Normal then writeln "No proof found." |
43025
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parents:
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else (); |
58892
20aa19ecf2cc
eliminated obsolete Proof.goal_message -- print outcome more directly;
wenzelm
parents:
58843
diff
changeset
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(noneN, [])) |
43025
5a0dec7bc099
handle non-auto try case gracefully in Solve Direct
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parents:
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| NONE => |
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(if mode = Normal then writeln "An error occurred." |
43025
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handle non-auto try case gracefully in Solve Direct
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parents:
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else (); |
58892
20aa19ecf2cc
eliminated obsolete Proof.goal_message -- print outcome more directly;
wenzelm
parents:
58843
diff
changeset
|
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(unknownN, []))) |
43020
abb5d1f907e4
added "try" command, to launch Solve Direct, Quickcheck, Nitpick, Sledgehammer, and Try Methods
blanchet
parents:
43018
diff
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end |
abb5d1f907e4
added "try" command, to launch Solve Direct, Quickcheck, Nitpick, Sledgehammer, and Try Methods
blanchet
parents:
43018
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|> `(fn (outcome_code, _) => outcome_code = someN); |
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43025
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val solve_direct = do_solve_direct Normal |
5a0dec7bc099
handle non-auto try case gracefully in Solve Direct
blanchet
parents:
43024
diff
changeset
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40116
9ed3711366c8
introduced manual version of "Auto Solve" as "solve_direct"
blanchet
parents:
39616
diff
changeset
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val _ = |
58893
9e0ecb66d6a7
eliminated unused int_only flag (see also c12484a27367);
wenzelm
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Outer_Syntax.command @{command_spec "solve_direct"} |
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outer syntax command definitions based on formal command_spec derived from theory header declarations;
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"try to solve conjectures directly with existing theorems" |
51557
4e4b56b7a3a5
more robust access Toplevel.proof_of -- prefer warning via Toplevel.unknown_proof over hard crash (notably for skipped proofs);
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(Scan.succeed (Toplevel.unknown_proof o |
4e4b56b7a3a5
more robust access Toplevel.proof_of -- prefer warning via Toplevel.unknown_proof over hard crash (notably for skipped proofs);
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Toplevel.keep (ignore o solve_direct o Toplevel.proof_of))); |
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40116
9ed3711366c8
introduced manual version of "Auto Solve" as "solve_direct"
blanchet
parents:
39616
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9ed3711366c8
introduced manual version of "Auto Solve" as "solve_direct"
blanchet
parents:
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(* hook *) |
9ed3711366c8
introduced manual version of "Auto Solve" as "solve_direct"
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parents:
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43025
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fun try_solve_direct auto = do_solve_direct (if auto then Auto_Try else Try) |
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val _ = Try.tool_setup (solve_directN, (10, @{system_option auto_solve_direct}, try_solve_direct)); |
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end; |