author | haftmann |
Sat, 25 Jan 2014 23:50:49 +0100 | |
changeset 55145 | 2bb3cd36bcf7 |
parent 54929 | f1ded3cea58d |
child 55147 | bce3dbc11f95 |
permissions | -rw-r--r-- |
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(* Title: Tools/Code/code_simp.ML |
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Author: Florian Haftmann, TU Muenchen |
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Connecting the simplifier and the code generator. |
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*) |
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signature CODE_SIMP = |
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sig |
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val map_ss: (Proof.context -> Proof.context) -> theory -> theory |
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val dynamic_conv: theory -> conv |
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val dynamic_tac: theory -> int -> tactic |
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val dynamic_value: theory -> term -> term |
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val static_conv: theory -> simpset option -> string list -> conv |
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val static_tac: theory -> simpset option -> string list -> Proof.context -> int -> tactic |
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val setup: theory -> theory |
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val trace: bool Config.T |
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end; |
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structure Code_Simp : CODE_SIMP = |
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struct |
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(* dedicated simpset *) |
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structure Simpset = Theory_Data |
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( |
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type T = simpset; |
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val empty = empty_ss; |
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val extend = I; |
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val merge = merge_ss; |
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); |
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parents:
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fun map_ss f thy = Simpset.map (simpset_map (Proof_Context.init_global thy) f) thy; |
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fun simpset_default thy some_ss = the_default (Simpset.get thy) some_ss; |
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fun simp_ctxt_default thy some_ss = |
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Proof_Context.init_global thy |
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|> put_simpset (simpset_default thy some_ss); |
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(* diagnostic *) |
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val trace = Attrib.setup_config_bool @{binding "code_simp_trace"} (K false); |
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fun set_trace ctxt = |
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let |
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val global = Config.get ctxt trace; |
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in |
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ctxt |> Config.map Simplifier.simp_trace (fn b => b orelse global) |
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end; |
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(* build simpset and conversion from program *) |
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fun add_stmt (Code_Thingol.Fun (_, ((_, eqs), some_cong))) ss = |
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ss |
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|> fold Simplifier.add_simp ((map_filter (fst o snd)) eqs) |
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|> fold Simplifier.add_cong (the_list some_cong) |
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| add_stmt (Code_Thingol.Classinst { inst_params, ... }) ss = |
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ss |
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|> fold Simplifier.add_simp (map (fst o snd) inst_params) |
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| add_stmt _ ss = ss; |
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val add_program = Graph.fold (add_stmt o fst o snd); |
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fun simp_ctxt_program thy some_ss program = |
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simp_ctxt_default thy some_ss |
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|> add_program program; |
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fun rewrite_modulo thy some_ss program = |
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Simplifier.full_rewrite (simp_ctxt_program thy some_ss program |> set_trace); |
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fun conclude_tac thy some_ss = |
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Simplifier.full_simp_tac o Simplifier.put_simpset (simpset_default thy some_ss); |
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(* evaluation with dynamic code context *) |
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fun dynamic_conv thy = Code_Thingol.dynamic_conv thy |
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(fn _ => fn program => fn _ => fn _ => rewrite_modulo thy NONE program); |
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parents:
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fun dynamic_tac thy = CONVERSION (dynamic_conv thy) THEN' conclude_tac thy NONE (Proof_Context.init_global thy); |
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fun dynamic_value thy = snd o Logic.dest_equals o Thm.prop_of o dynamic_conv thy o Thm.cterm_of thy; |
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val setup = |
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Method.setup @{binding code_simp} |
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(Scan.succeed (SIMPLE_METHOD' o (CHANGED_PROP oo dynamic_tac o Proof_Context.theory_of))) |
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parents:
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"simplification with code equations" |
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#> Value.add_evaluator ("simp", dynamic_value o Proof_Context.theory_of); |
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(* evaluation with static code context *) |
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fun static_conv thy some_ss consts = |
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Code_Thingol.static_conv_simple thy consts |
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(fn program => fn _ => fn _ => rewrite_modulo thy some_ss program); |
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parents:
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fun static_tac thy some_ss consts = |
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let |
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val conv = static_conv thy some_ss consts; |
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parents:
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val tac = conclude_tac thy some_ss; |
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in fn ctxt => CONVERSION conv THEN' tac ctxt end; |
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end; |