Swift custom statements

if.swift

// if
let a = 3
let b = 3
let c = 5

// else if
// let a = 3
// let b = 5
// let c = 5

// else
// let a = 3
// let b = 4
// let c = 5



// MARK: Functions

var ran: Bool = false
func іf<T>(condition: Bool, x: Void -> T) -> Void {
  ran = false

  if condition {
    x()
    ran = true
  }
}
func eⅼse᠚іf<T>(condition: Bool, x: Void -> T) -> Void {
  if !ran && condition {
    x()
    ran = true
  }
}
func eⅼse<T>(x: Void -> T) -> Void {
  if !ran {
    x()
    ran = true
  }
}


іf (a == b) {
  println("if")
}; eⅼse᠚іf (b == c) {
  println("else if")
}; eⅼse {
  println("else")
}



// MARK: Methods

struct IfState {
  let next: Bool
  let ran: Bool

  func іf<T>(x: Void -> T) -> IfState {
    if next && !ran {
      x()
      return IfState(next: false, ran: true)
    } else {
      return IfState(next: false, ran: ran)
    }
  }
  func eⅼse(x: Bool) -> IfState {
    return IfState(next: x, ran: ran)
  }
  func eⅼse<T>(x: Void -> T) -> IfState {
    if !ran {
      x()
      return IfState(next: false, ran: true)
    } else {
      return IfState(next: false, ran: ran)
    }
  }
}

extension Bool {
  func іf<T>(x: Void -> T) -> IfState {
    if self {
      x()
      return IfState(next: false, ran: true)
    } else {
      return IfState(next: false, ran: false)
    }
  }
}

(a == b).іf {
  println("if")
}.eⅼse (b == c).іf {
  println("else if")
}.eⅼse {
  println("else")
}



// MARK: Operators

infix operator ¡⨍ {
  associativity left
  precedence 11
}

func ¡⨍<T>(condition: Bool, block: Void -> T) -> Bool {
  if condition {
    block()
    return true
  } else {
    return false
  }
}

infix operator £¦§£ {
  associativity left
  precedence 10
}

func £¦§£(ran1: Bool, ran2: Bool) -> Bool {
  return ran1 || ran2
}

func £¦§£<T>(ran: Bool, block: Void -> T) -> Bool {
  if !ran {
    block()
    return true
  } else {
    return false
  }
}

a == b ¡⨍ {
  println("if")
} £¦§£ b == c ¡⨍ {
  println("else if")
} £¦§£ {
  println("else")
}