parsley/parsley/Parsley/LazyChooseParsley

LazyChooseParsley

final implicit class LazyChooseParsley[P, +A](pq: => (P, P))(implicit con: P => Parsley[A])

This class exposes a ternary operator on pairs of parsers.

Value parameters:
con

A conversion (if required) to turn elements of pq into parsers

pq

The parsers which serve the branches of the if

Version:

1.0.0

class Object
trait Matchable
class Any

Value members

Concrete methods

def ?:(b: => Parsley[Boolean]): Parsley[A]

This is an if statement lifted to the parser level. Formally, this is a selective functor operation, equivalent to (branch b.map(boolToEither) (p.map(const)) (q.map(const))). Note: due to Scala operator associativity laws, this is a right-associative operator, and must be properly bracketed, technically the receiver is the rhs...

This is an if statement lifted to the parser level. Formally, this is a selective functor operation, equivalent to (branch b.map(boolToEither) (p.map(const)) (q.map(const))). Note: due to Scala operator associativity laws, this is a right-associative operator, and must be properly bracketed, technically the receiver is the rhs...

Value parameters:
b

The parser that yields the condition value

Returns:

The result of either p or q depending on the return value of the receiver