5ffbada3df
This is the first set of polymorphic methods. I will add more later, and keep reducing code duplication. cc @Kha
118 lines
4.2 KiB
Text
118 lines
4.2 KiB
Text
/-
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Copyright (c) 2018 Microsoft Corporation. All rights reserved.
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Released under Apache 2.0 license as described in the file LICENSE.
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Authors: Sebastian Ullrich and Leonardo de Moura
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-/
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import Lean.Data.KVMap
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namespace Lean
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def Options := KVMap
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namespace Options
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def empty : Options := { : KVMap }
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instance : HasEmptyc Options := ⟨empty⟩
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instance : Inhabited Options := ⟨empty⟩
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instance : HasToString Options := inferInstanceAs (HasToString KVMap)
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end Options
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structure OptionDecl :=
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(defValue : DataValue)
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(group : String := "")
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(descr : String := "")
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def OptionDecls := NameMap OptionDecl
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instance OptionDecls.inhabited : Inhabited OptionDecls :=
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⟨({} : NameMap OptionDecl)⟩
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private def initOptionDeclsRef : IO (IO.Ref OptionDecls) :=
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IO.mkRef (mkNameMap OptionDecl)
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@[init initOptionDeclsRef]
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private constant optionDeclsRef : IO.Ref OptionDecls := arbitrary _
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@[export lean_register_option]
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def registerOption (name : Name) (decl : OptionDecl) : IO Unit := do
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decls ← optionDeclsRef.get;
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when (decls.contains name) $
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throw $ IO.userError ("invalid option declaration '" ++ toString name ++ "', option already exists");
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optionDeclsRef.set $ decls.insert name decl
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def getOptionDecls : IO OptionDecls := optionDeclsRef.get
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@[export lean_get_option_decls_array]
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def getOptionDeclsArray : IO (Array (Name × OptionDecl)) := do
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decls ← getOptionDecls;
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pure $ decls.fold
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(fun (r : Array (Name × OptionDecl)) k v => r.push (k, v))
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#[]
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def getOptionDecl (name : Name) : IO OptionDecl := do
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decls ← getOptionDecls;
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(some decl) ← pure (decls.find? name) | throw $ IO.userError ("unknown option '" ++ toString name ++ "'");
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pure decl
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def getOptionDefaulValue (name : Name) : IO DataValue := do
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decl ← getOptionDecl name;
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pure decl.defValue
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def getOptionDescr (name : Name) : IO String := do
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decl ← getOptionDecl name;
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pure decl.descr
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def setOptionFromString (opts : Options) (entry : String) : IO Options := do
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let ps := (entry.splitOn "=").map String.trim;
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[key, val] ← pure ps | throw $ IO.userError "invalid configuration option entry, it must be of the form '<key> = <value>'";
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defValue ← getOptionDefaulValue key.toName;
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match defValue with
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| DataValue.ofString v => pure $ opts.setString key val
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| DataValue.ofBool v =>
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if key == "true" then pure $ opts.setBool key true
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else if key == "false" then pure $ opts.setBool key false
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else throw $ IO.userError ("invalid Bool option value '" ++ val ++ "'")
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| DataValue.ofName v => pure $ opts.setName key val.toName
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| DataValue.ofNat v =>
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match val.toNat? with
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| none => throw (IO.userError ("invalid Nat option value '" ++ val ++ "'"))
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| some v => pure $ opts.setNat key v
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| DataValue.ofInt v =>
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match val.toInt? with
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| none => throw (IO.userError ("invalid Int option value '" ++ val ++ "'"))
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| some v => pure $ opts.setInt key v
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@[init] def verboseOption : IO Unit :=
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registerOption `verbose { defValue := true, group := "", descr := "disable/enable verbose messages" }
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@[init] def timeoutOption : IO Unit :=
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registerOption `timeout { defValue := DataValue.ofNat 0, group := "", descr := "the (deterministic) timeout is measured as the maximum of memory allocations (in thousands) per task, the default is unbounded" }
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@[init] def maxMemoryOption : IO Unit :=
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registerOption `maxMemory { defValue := DataValue.ofNat 2048, group := "", descr := "maximum amount of memory available for Lean in megabytes" }
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class MonadOptions (m : Type → Type) :=
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(getOptions : m Options)
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export MonadOptions (getOptions)
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/- We currently cannot mark the following definition as an instance since it increases the search space too much -/
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def monadOptsFromLift (m) {n} [MonadOptions m] [HasMonadLiftT m n] : MonadOptions n :=
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{ getOptions := liftM (getOptions : m _) }
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instance ReaderT.monadOpts {ρ m} [MonadOptions m] : MonadOptions (ReaderT ρ m) := monadOptsFromLift m
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instance StateRefT.monadOpts {σ m} [MonadOptions m] : MonadOptions (StateRefT σ m) := monadOptsFromLift m
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section Methods
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variables {m : Type → Type} [Monad m] [MonadOptions m]
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def getBoolOption (k : Name) (defValue := false) : m Bool := do
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opts ← getOptions;
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pure $ opts.getBool k defValue
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def getNatOption (k : Name) (defValue := 0) : m Nat := do
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opts ← getOptions;
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pure $ opts.getNat k defValue
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end Methods
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end Lean
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