Further environment extension API; the primitives live in Lean.Environment.

def Lean.SimplePersistentEnvExtension (α σ : Type) : Type

Simple PersistentEnvExtension that implements exportEntriesFn using a list of entries.

@[specialize #[]]

def Lean.mkStateFromImportedEntries {α σ : Type} (addEntryFn : σ → α → σ) (initState : σ) (as : Array (Array α)) : σ

structure Lean.SimplePersistentEnvExtensionDescr (α σ : Type) : Type

• name : Name
• addEntryFn : σ → α → σ
• addImportedFn : Array (Array α) → σ
• toArrayFn : List α → Array α
• exportEntriesFnEx? : Option (Environment → σ → List α → OLeanLevel → Array α)
• asyncMode : EnvExtension.AsyncMode
• replay? : Option (List α → σ → σ → List α × σ)

def Lean.SimplePersistentEnvExtension.replayOfFilter {σ : Type u_1} {α : Type u_2} (p : σ → α → Bool) (addEntryFn : σ → α → σ) : List α → σ → σ → List α × σ

Returns a function suitable for SimplePersistentEnvExtensionDescr.replay? that replays all new entries onto the state using addEntryFn. p should filter out entries that have already been added to the state by a prior replay of the same realizable constant.

def Lean.registerSimplePersistentEnvExtension {α σ : Type} [Inhabited σ] (descr : SimplePersistentEnvExtensionDescr α σ) : IO (SimplePersistentEnvExtension α σ)

instance Lean.SimplePersistentEnvExtension.instInhabited {α σ : Type} [Inhabited σ] : Inhabited (SimplePersistentEnvExtension α σ)

def Lean.SimplePersistentEnvExtension.getEntries {α σ : Type} [Inhabited σ] (ext : SimplePersistentEnvExtension α σ) (env : Environment) (asyncMode : EnvExtension.AsyncMode := ext.toEnvExtension.asyncMode) : List α

Get the list of values used to update the state of the given SimplePersistentEnvExtension in the current file.

def Lean.SimplePersistentEnvExtension.getState {α σ : Type} [Inhabited σ] (ext : SimplePersistentEnvExtension α σ) (env : Environment) (asyncMode : EnvExtension.AsyncMode := ext.toEnvExtension.asyncMode) (asyncDecl : Name := Name.anonymous) : σ

Get the current state of the given SimplePersistentEnvExtension.

def Lean.SimplePersistentEnvExtension.setState {α σ : Type} (ext : SimplePersistentEnvExtension α σ) (env : Environment) (s : σ) : Environment

Set the current state of the given SimplePersistentEnvExtension. This change is not persisted across files.

def Lean.SimplePersistentEnvExtension.modifyState {α σ : Type} (ext : SimplePersistentEnvExtension α σ) (env : Environment) (f : σ → σ) : Environment

Modify the state of the given extension in the given environment by applying the given function. This change is not persisted across files.

def Lean.TagDeclarationExtension : Type

Environment extension for tagging declarations. Declarations must only be tagged in the module where they were declared.

def Lean.mkTagDeclarationExtension (name : Name := by exact decl_name%) (asyncMode : EnvExtension.AsyncMode := EnvExtension.AsyncMode.mainOnly) : IO TagDeclarationExtension

instance Lean.TagDeclarationExtension.instInhabited : Inhabited TagDeclarationExtension

def Lean.TagDeclarationExtension.tag (ext : TagDeclarationExtension) (env : Environment) (declName : Name) : Environment

def Lean.TagDeclarationExtension.isTagged (ext : TagDeclarationExtension) (env : Environment) (declName : Name) (asyncMode : EnvExtension.AsyncMode := ext.toEnvExtension.asyncMode) : Bool

structure Lean.MapDeclarationExtension (α : Type) extends Lean.PersistentEnvExtension (Lean.Name × α) (Lean.Name × α) (Lean.NameMap α) : Type

Environment extension for mapping declarations to values. Declarations must only be inserted into the mapping in the module where they were declared.

• toEnvExtension : EnvExtension (PersistentEnvExtensionState (Name × α) (NameMap α))
• name : Name
• addImportedFn : Array (Array (Name × α)) → ImportM (NameMap α)
• addEntryFn : NameMap α → Name × α → NameMap α
• exportEntriesFn : Environment → NameMap α → OLeanLevel → Array (Name × α)
• statsFn : NameMap α → Format

def Lean.instInhabitedMapDeclarationExtension.default {a✝ : Type} : MapDeclarationExtension a✝

instance Lean.instInhabitedMapDeclarationExtension {a✝ : Type} : Inhabited (MapDeclarationExtension a✝)

def Lean.mkMapDeclarationExtension {α : Type} (name : Name := by exact decl_name%) (asyncMode : EnvExtension.AsyncMode := EnvExtension.AsyncMode.async AsyncBranch.mainEnv) (exportEntriesFn : Environment → NameMap α → OLeanLevel → Array (Name × α) := fun (env : Environment) (s : NameMap α) (x : OLeanLevel) => Array.filter (fun (x : Name × α) => match x with | (n, snd) => env.contains n false) (Std.TreeMap.toArray s)) : IO (MapDeclarationExtension α)

def Lean.MapDeclarationExtension.insert {α : Type} (ext : MapDeclarationExtension α) (env : Environment) (declName : Name) (val : α) : Environment

def Lean.MapDeclarationExtension.find? {α : Type} [Inhabited α] (ext : MapDeclarationExtension α) (env : Environment) (declName : Name) (asyncMode : EnvExtension.AsyncMode := ext.toEnvExtension.asyncMode) (level : OLeanLevel := OLeanLevel.exported) : Option α

def Lean.MapDeclarationExtension.contains {α : Type} [Inhabited α] (ext : MapDeclarationExtension α) (env : Environment) (declName : Name) : Bool