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Foundations of Software - LAMP - EPFL

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Failure And Success Parsers<br />

� The parser failure(msg) always fails with the given error message. It<br />

is implemented as follows:<br />

def failure(msg : String) = new Parser[Nothing] {<br />

def apply(in : Input) = Failure(msg, in)<br />

}<br />

� The parser success(result) always succeeds with the given result. It does<br />

not consume any input. It is implemented as follows:<br />

def success[T](result : T) = new Parser[T] {<br />

def apply(in : Input) = Success(result, in)<br />

}<br />

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