Documentation

Lean.Util.Recognizers

@[inline]

def Lean.Expr.const? (e : Lean.Expr) :

Option (Lean.Name × List Lean.Level)

Instances For

@[inline]

def Lean.Expr.app1? (e : Lean.Expr) (fName : Lean.Name) :

Option Lean.Expr

Equations

e.app1? fName = if e.isAppOfArity fName 1 = true then some e.appArg! else none

Instances For

@[inline]

def Lean.Expr.app2? (e : Lean.Expr) (fName : Lean.Name) :

Option (Lean.Expr × Lean.Expr)

Instances For

@[inline]

def Lean.Expr.app3? (e : Lean.Expr) (fName : Lean.Name) :

Option (Lean.Expr × Lean.Expr × Lean.Expr)

Equations

e.app3? fName = if e.isAppOfArity fName 3 = true then some (e.appFn!.appFn!.appArg!, e.appFn!.appArg!, e.appArg!) else none

Instances For

@[inline]

def Lean.Expr.app4? (e : Lean.Expr) (fName : Lean.Name) :

Option (Lean.Expr × Lean.Expr × Lean.Expr × Lean.Expr)

Equations

e.app4? fName = if e.isAppOfArity fName 4 = true then some (e.appFn!.appFn!.appFn!.appArg!, e.appFn!.appFn!.appArg!, e.appFn!.appArg!, e.appArg!) else none

Instances For

@[inline]

def Lean.Expr.eq? (p : Lean.Expr) :

Option (Lean.Expr × Lean.Expr × Lean.Expr)

Instances For

@[inline]

def Lean.Expr.ne? (p : Lean.Expr) :

Option (Lean.Expr × Lean.Expr × Lean.Expr)

Instances For

@[inline]

def Lean.Expr.iff? (p : Lean.Expr) :

Option (Lean.Expr × Lean.Expr)

Instances For

@[inline]

def Lean.Expr.eqOrIff? (p : Lean.Expr) :

Option (Lean.Expr × Lean.Expr)

Instances For

@[inline]

def Lean.Expr.not? (p : Lean.Expr) :

Option Lean.Expr

Instances For

@[inline]

def Lean.Expr.notNot? (p : Lean.Expr) :

Option Lean.Expr

Equations

p.notNot? = match p.not? with | some p => p.not? | none => none

Instances For

@[inline]

def Lean.Expr.and? (p : Lean.Expr) :

Option (Lean.Expr × Lean.Expr)

Equations

p.and? = p.app2? `And

Instances For

@[inline]

def Lean.Expr.heq? (p : Lean.Expr) :

Option (Lean.Expr × Lean.Expr × Lean.Expr × Lean.Expr)

Instances For

def Lean.Expr.natAdd? (e : Lean.Expr) :

Option (Lean.Expr × Lean.Expr)

Equations

e.natAdd? = e.app2? `Nat.add

Instances For

@[inline]

def Lean.Expr.arrow? :

Lean.Expr → Option (Lean.Expr × Lean.Expr)

Instances For

def Lean.Expr.isEq (e : Lean.Expr) :

Instances For

def Lean.Expr.isHEq (e : Lean.Expr) :

Instances For

def Lean.Expr.isIte (e : Lean.Expr) :

Instances For

def Lean.Expr.isDIte (e : Lean.Expr) :

Instances For

def Lean.Expr.listLit? (e : Lean.Expr) :

Option (Lean.Expr × List Lean.Expr)

Equations

e.listLit? = Lean.Expr.listLit?.loop e []

Instances For

partial def Lean.Expr.listLit?.loop (e : Lean.Expr) (acc : List Lean.Expr) :

Option (Lean.Expr × List Lean.Expr)

def Lean.Expr.arrayLit? (e : Lean.Expr) :

Option (Lean.Expr × List Lean.Expr)

Instances For

def Lean.Expr.prod? (e : Lean.Expr) :

Option (Lean.Expr × Lean.Expr)

Recognize α × β

Equations

e.prod? = e.app2? `Prod

Instances For

def Lean.Expr.name? :

Lean.Expr → Option Lean.Name

Checks if an expression is a Name literal, and if so returns the name.

Instances For