partial def Lean.Level.replace (f? : Level → Option Level) (u : Level) : Level

@[reducible, inline]

abbrev Lean.Expr.ReplaceLevelImpl.cacheSize : USize

structure Lean.Expr.ReplaceLevelImpl.State : Type

• keys : Array Expr
• results : Array Expr

@[reducible, inline]

abbrev Lean.Expr.ReplaceLevelImpl.ReplaceM (α : Type) : Type

unsafe def Lean.Expr.ReplaceLevelImpl.cache (i : USize) (key result : Expr) : ReplaceM Expr

unsafe def Lean.Expr.ReplaceLevelImpl.replaceUnsafeM (f? : Level → Option Level) (size : USize) (e : Expr) : ReplaceM Expr

unsafe def Lean.Expr.ReplaceLevelImpl.initCache : State

unsafe def Lean.Expr.ReplaceLevelImpl.replaceUnsafe (f? : Level → Option Level) (e : Expr) : Expr

@[implemented_by Lean.Expr.ReplaceLevelImpl.replaceUnsafe]

partial def Lean.Expr.replaceLevel (f? : Level → Option Level) : Expr → Expr