Parens free `while` statement

while.macro.sjs

/*

`while cond {}`

Brackets are mandatory

The following syntaxes are also valid

`do {} while cond`
`while cond;`

*/

let while = macro {
  rule { $cond:expr { $body ... } } => {
    while ($cond) { $body ... }
  }
  rule infix { do { $body ... } | $cond:expr } => {
    do { $body ... } while ($cond)
  }
  rule { $cond:expr ; } => {
  	while ($cond);
  }
}

export while;