sepBy1 composite ​

Signature ​

function sepBy1<T, S>(parser: Parser<T>, sep: Parser<S>): Parser<Array<T>>

Description ​

sepBy1 combinator parses one or more occurrences of parser, separated by sep. Returns a list of values (without separator) returned by parser. Otherwise returns an error produced by parser.

Usage ​

const Parser = sepBy1(whole(), string('+'))

run(Parser).with('1+2+3+4')

{
  isOk: true,
  span: [ 0, 7 ],
  pos: 7,
  value: [ 1, 2, 3, 4 ]
}

run(Parser).with('1-two')

{
  isOk: true,
  span: [ 0, 1 ],
  pos: 1,
  value: [ 1 ]
}

run(Parser).with('one+two')

{
  isOk: false,
  span: [ 0, 0 ],
  pos: 0,
  expected: 'whole number'
}