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Optimize JsonObjectParser.isWhitespace by replacing Set.contains with match using table switch (#25260)

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Lukasz Stefaniak 2018-06-26 16:44:28 +02:00 • committed by Arnout Engelen
parent 427124a531
commit b8230a38b7
3 changed files with 43 additions and 34 deletions
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19
akka-stream/src/main/scala/akka/stream/impl/JsonObjectParser.scala
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@ -23,15 +23,18 @@ import scala.annotation.switch
final val Backslash = '\\'.toByte
final val Comma = ','.toByte
final val LineBreak = '\n'.toByte
final val LineBreak2 = '\r'.toByte
final val Tab = '\t'.toByte
final val Space = ' '.toByte
final val LineBreak = 10 // '\n'
final val LineBreak2 = 13 // '\r'
final val Tab = 9 // '\t'
final val Space = 32 // ' '
final val Whitespace = Set(LineBreak, LineBreak2, Tab, Space)
def isWhitespace(input: Byte): Boolean =
Whitespace.contains(input)
def isWhitespace(b: Byte): Boolean = (b: @switch) match {
case Space ⇒ true
case LineBreak ⇒ true
case LineBreak2 ⇒ true
case Tab ⇒ true
case _ ⇒ false
}
}