author | wenzelm |
Fri, 06 Mar 2015 15:58:56 +0100 | |
changeset 59621 | 291934bac95e |
parent 59323 | 468bd3aedfa1 |
child 59633 | a372513af1e2 |
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: Proof.context -> conv |
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val dynamic_tac: Proof.context -> int -> tactic |
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val dynamic_value: Proof.context -> term -> term |
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val static_conv: { ctxt: Proof.context, simpset: simpset option, consts: string list } |
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-> Proof.context -> conv |
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val static_tac: { ctxt: Proof.context, simpset: simpset option, consts: string list } |
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-> Proof.context -> int -> tactic |
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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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simplifier uses proper Proof.context instead of historic type simpset;
wenzelm
parents:
48072
diff
changeset
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val extend = I; |
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val merge = merge_ss; |
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); |
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simplifier uses proper Proof.context instead of historic type simpset;
wenzelm
parents:
48072
diff
changeset
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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 ctxt some_ss = the_default (Simpset.get (Proof_Context.theory_of ctxt)) 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 context 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 = Code_Symbol.Graph.fold (add_stmt o fst o snd); |
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fun simpset_program ctxt some_ss program = |
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simpset_map ctxt (add_program program) (simpset_default ctxt some_ss); |
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fun rewrite_modulo ctxt some_ss program = |
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let |
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val ss = simpset_program ctxt some_ss program; |
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in fn ctxt => Simplifier.full_rewrite (ctxt |> put_simpset ss |> set_trace) end; |
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parents:
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fun conclude_tac ctxt some_ss = |
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let |
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val ss = simpset_default ctxt some_ss |
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in fn ctxt => Simplifier.full_simp_tac (ctxt |> put_simpset ss) end; |
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(* evaluation with dynamic code context *) |
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fun dynamic_conv ctxt = Code_Thingol.dynamic_conv ctxt |
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(fn program => fn _ => fn _ => rewrite_modulo ctxt NONE program ctxt); |
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fun dynamic_tac ctxt = CONVERSION (dynamic_conv ctxt) |
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THEN' conclude_tac ctxt NONE ctxt; |
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fun dynamic_value ctxt = |
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Thm.cterm_of and Thm.ctyp_of operate on local context;
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snd o Logic.dest_equals o Thm.prop_of o dynamic_conv ctxt o Thm.global_cterm_of (Proof_Context.theory_of ctxt); |
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val _ = Theory.setup |
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(Method.setup @{binding code_simp} |
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(Scan.succeed (SIMPLE_METHOD' o (CHANGED_PROP oo dynamic_tac))) |
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"simplification with code equations"); |
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(* evaluation with static code context *) |
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62da80041afd
syntactic means to prevent accidental mixup of static and dynamic context
haftmann
parents:
56969
diff
changeset
|
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fun static_conv { ctxt, simpset, consts } = |
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syntactic means to prevent accidental mixup of static and dynamic context
haftmann
parents:
56969
diff
changeset
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Code_Thingol.static_conv_simple { ctxt = ctxt, consts = consts } |
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syntactic means to prevent accidental mixup of static and dynamic context
haftmann
parents:
56969
diff
changeset
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(K oo rewrite_modulo ctxt simpset); |
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56973
62da80041afd
syntactic means to prevent accidental mixup of static and dynamic context
haftmann
parents:
56969
diff
changeset
|
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fun static_tac { ctxt, simpset, consts } = |
52736
317663b422bb
more correct context for dynamic invocations of static code conversions etc.
haftmann
parents:
51717
diff
changeset
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let |
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syntactic means to prevent accidental mixup of static and dynamic context
haftmann
parents:
56969
diff
changeset
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val conv = static_conv { ctxt = ctxt, simpset = simpset, consts = consts }; |
62da80041afd
syntactic means to prevent accidental mixup of static and dynamic context
haftmann
parents:
56969
diff
changeset
|
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val tac = conclude_tac ctxt simpset; |
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in fn ctxt' => CONVERSION (conv ctxt') THEN' (tac ctxt') end; |
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end; |