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package mill.scalalib.dependency.versions
import fastparse._, NoWhitespace._
private[dependency] object VersionParser {
private def numberParser[_: P] =
P(CharIn("0-9").rep(1).!.map(_.toLong))
private def numericPartParser[_: P] =
P(numberParser ~ &(CharIn(".\\-+") | End)).rep(min = 1, sep = ".")
private def tokenParser[_: P] =
CharPred(c => c != '.' && c != '-' && c != '+').rep(1).!
private def tokenPartParser[_: P] =
tokenParser.rep(sep = CharIn(".\\-"))
private def firstPartParser[_: P] =
P(CharIn(".\\-") ~ tokenPartParser).?
private def secondPartParser[_: P] =
P("+" ~ tokenPartParser).?
private def versionParser[_: P] =
P(numericPartParser ~ firstPartParser ~ secondPartParser).map {
case (a, b, c) => (a, b.getOrElse(Seq.empty), c.getOrElse(Seq.empty))
}
def parse(text: String): Parsed[(Seq[Long], Seq[String], Seq[String])] =
fastparse.parse(text, versionParser(_))
}
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