structure Lean.CollectFVars.State : Type

• visitedExpr : Lean.ExprSet
• fvarSet : Lean.FVarIdSet
• fvarIds : Array Lean.FVarId

instance Lean.CollectFVars.instInhabitedState : Inhabited Lean.CollectFVars.State

Equations

• Lean.CollectFVars.instInhabitedState = { default := { visitedExpr := default, fvarSet := default, fvarIds := default } }

def Lean.CollectFVars.State.add (s : Lean.CollectFVars.State) (fvarId : Lean.FVarId) : Lean.CollectFVars.State

Equations

• s.add fvarId = { visitedExpr := s.visitedExpr, fvarSet := s.fvarSet.insert fvarId, fvarIds := s.fvarIds.push fvarId }

@[reducible, inline]

abbrev Lean.CollectFVars.Visitor : Type

Equations

• Lean.CollectFVars.Visitor = (Lean.CollectFVars.State → Lean.CollectFVars.State)

partial def Lean.CollectFVars.visit (e : Lean.Expr) : Lean.CollectFVars.Visitor

partial def Lean.CollectFVars.main : Lean.Expr → Lean.CollectFVars.Visitor

def Lean.collectFVars (s : Lean.CollectFVars.State) (e : Lean.Expr) : Lean.CollectFVars.State