Asserts a step value with a given one
Asserts a step value with a given one otherwise prints env
Asserts a step value with success state and the position is expected as well
Asserts a step value with success state and the position is expected as well otherwise prints env
Asserts a step value with a fail.
Fail is related only on the fail in the given rule in a step.
Asserts a step value with a fail on an expected position
Fail is related only on the fail in the given rule in a step.
Creates an internal parser or panicking otherwise