structure Lean.Expr.FoldConstsImpl.State : Type

• visited : PtrSet Expr
• visitedConsts : NameHashSet

@[reducible, inline]

unsafe abbrev Lean.Expr.FoldConstsImpl.FoldM (α : Type) : Type

Equations

• Lean.Expr.FoldConstsImpl.FoldM = StateM Lean.Expr.FoldConstsImpl.State

unsafe def Lean.Expr.FoldConstsImpl.fold {α : Type} (f : Name → α → α) (e : Expr) (acc : α) : FoldM α

Equations

• Lean.Expr.FoldConstsImpl.fold f e acc = Lean.Expr.FoldConstsImpl.fold.visit✝ f e acc

@[inline]

unsafe def Lean.Expr.FoldConstsImpl.foldUnsafe {α : Type} (e : Expr) (init : α) (f : Name → α → α) : α

Equations

• Lean.Expr.FoldConstsImpl.foldUnsafe e init f = StateT.run' (Lean.Expr.FoldConstsImpl.fold f e init) { }

@[implemented_by Lean.Expr.FoldConstsImpl.foldUnsafe]

opaque Lean.Expr.foldConsts {α : Type} (e : Expr) (init : α) (f : Name → α → α) : α

Apply f to every constant occurring in e once.

def Lean.Expr.getUsedConstants (e : Expr) : Array Name

Equations

• e.getUsedConstants = e.foldConsts #[] fun (c : Lean.Name) (cs : Array Lean.Name) => cs.push c

def Lean.Expr.getUsedConstantsAsSet (e : Expr) : NameSet

Like Expr.getUsedConstants, but produce a NameSet.

Equations

• e.getUsedConstantsAsSet = e.foldConsts ∅ fun (c : Lean.Name) (cs : Lean.NameSet) => cs.insert c

def Lean.ConstantInfo.getUsedConstantsAsSet (c : ConstantInfo) : NameSet

Return all names appearing in the type or value of a ConstantInfo.

Equations

• One or more equations did not get rendered due to their size.
• c.getUsedConstantsAsSet = c.type.getUsedConstantsAsSet ++ match c.value? with | some v => v.getUsedConstantsAsSet | none => ∅