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takeSides composite

Signature

ts

function takeSides<T1, T2, T3>(
  p1: Parser<T1>,
  p2: Parser<T2>,
  p3: Parser<T3>
): Parser<[T1, T3]>

Description

takeSides combinator takes exactly three parsers and applies them in order. Returns a tuple of the results of p1 and p3 parsers.

Usage

ts

const Parser = takeSides(
  whole(),
  sequence(
    whitespace(),
    string('&'),
    whitespace()
  ),
  whole()
)

Success

ts

run(Parser).with('100 & 200')

{
  isOk: true,
  span: [ 0, 9 ],
  pos: 9,
  value: [ 100, 200 ]
}

Failure

ts

run(Parser).with('100 ^ 200')

{
  isOk: false,
  span: [ 4, 5 ],
  pos: 5,
  expected: '&'
}