lean4-htt/library/init/lean/compiler/closedtermcache.lean
2019-07-02 13:22:11 -07:00

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/-
Copyright (c) 2019 Microsoft Corporation. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Leonardo de Moura
-/
prelude
import init.lean.environment
namespace Lean
abbrev ClosedTermCache := SMap Expr Name Expr.quickLt
def mkClosedTermCacheExtension : IO (SimplePersistentEnvExtension (Expr × Name) ClosedTermCache) :=
registerSimplePersistentEnvExtension {
name := `closedTermCache,
addImportedFn := fun as =>
let cache : ClosedTermCache := mkStateFromImportedEntries (fun s (p : Expr × Name) => s.insert p.1 p.2) {} as;
cache.switch,
addEntryFn := fun s ⟨e, n⟩ => s.insert e n
}
@[init mkClosedTermCacheExtension]
constant closedTermCacheExt : SimplePersistentEnvExtension (Expr × Name) ClosedTermCache := default _
@[export lean.cache_closed_term_name_core]
def cacheClosedTermName (env : Environment) (e : Expr) (n : Name) : Environment :=
closedTermCacheExt.addEntry env (e, n)
@[export lean.get_closed_term_name_core]
def getClosedTermName (env : Environment) (e : Expr) : Option Name :=
(closedTermCacheExt.getState env).find e
end Lean