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Project-declaredLean 4.32.0 · mathlib@81a5d257

Map run with Logging inputs eq run append Input Log

QueryImpl.map_run_withLogging_inputs_eq_run_appendInputLog

Project documentation

A WriterT query log can be replayed as a StateT input log. For computations over a sum spec + loggedSpec, this theorem compares two implementations: * left queries in spec are forwarded unchanged; * right queries in loggedSpec are either handled with withLogging, producing a QueryLog loggedSpec, or with appendInputLog, appending just the q...

Exact Lean statement

theorem map_run_withLogging_inputs_eq_run_appendInputLog
    [LawfulMonad m₀] [HasQuery spec₀ m₀]
    {α' : Type}
    (so : QueryImpl loggedSpec m₀)
    (oa : OracleComp (spec₀ + loggedSpec) α')
    (initialInputs : List loggedSpec.Domain) :
    let baseW : QueryImpl spec₀ (WriterT (QueryLog loggedSpec) m₀)

Formal artifact

Lean source

Canonical source
Full Lean sourceLean 4
theorem map_run_withLogging_inputs_eq_run_appendInputLog    [LawfulMonad m₀] [HasQuery spec₀ m₀]    {α' : Type}    (so : QueryImpl loggedSpec m₀)    (oa : OracleComp (spec₀ + loggedSpec) α')    (initialInputs : List loggedSpec.Domain) :    let baseW : QueryImpl spec₀ (WriterT (QueryLog loggedSpec) m₀) :=      (HasQuery.toQueryImpl (spec := spec₀) (m := m₀)).liftTarget _    let implW : QueryImpl (spec₀ + loggedSpec)        (WriterT (QueryLog loggedSpec) m₀) :=      baseW + QueryImpl.withLogging so    let baseS : QueryImpl spec₀ (StateT (List loggedSpec.Domain) m₀) :=      (HasQuery.toQueryImpl (spec := spec₀) (m := m₀)).liftTarget _    let implAppend : QueryImpl (spec₀ + loggedSpec)        (StateT (List loggedSpec.Domain) m₀) :=      baseS + appendInputLog so    ((fun z : α' × QueryLog loggedSpec =>        (z.1, initialInputs ++ z.2.map (fun e => e.1))) <$>          ((simulateQ implW oa).run : m₀ (α' × QueryLog loggedSpec))) =      ((simulateQ implAppend oa).run initialInputs : m₀ (α' × List loggedSpec.Domain)) := by  induction oa using OracleComp.inductionOn generalizing initialInputs with  | pure x => simp  | query_bind t oa ih =>      cases t with      | inl t' => simp [ih]      | inr t' =>          simp only [OracleSpec.add_apply_inr, simulateQ_bind, simulateQ_query,            OracleQuery.input_query, OracleQuery.cont_query, add_apply_inr, withLogging_apply,            bind_pure_comp, map_bind, monad_norm, WriterT.run_bind', WriterT.run_liftM,            List.empty_eq, WriterT.run_tell, List.cons_append, List.nil_append,            appendInputLog_apply, modify, StateT.run_bind, StateT.run_modifyGet,            StateT.run_monadLift, monadLift_self]          exact bind_congr fun u => by simpa [List.append_assoc] using ih u (initialInputs ++ [t'])
Project
VCVio
License
Apache-2.0
Commit
2ceb2d825ee3
Source
VCVio/OracleComp/QueryTracking/LoggingOracle.lean:170-202

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