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skip mate in +/-0 when not representable by %eval #99

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Merged
ornicar merged 2 commits into from
Oct 5, 2026
Merged

skip mate in +/-0 when not representable by %eval #99

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a96d309
skip mate in +/-0 when not representable by %eval
niklasf Oct 4, 2026
8b5ed2d
scalachess 18.0.0
ornicar Oct 5, 2026
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2 changes: 1 addition & 1 deletion build.sbt
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Original file line number Diff line number Diff line change
Expand Up @@ -29,7 +29,7 @@ lazy val app = project
"org.reactivemongo" %% "reactivemongo" % "1.1.0-RC15",
"org.reactivemongo" %% "reactivemongo-akkastream" % "1.1.0-RC15",
"com.github.lichess-org.scalalib" %% "scalalib-core" % "11.10.11",
"com.github.lichess-org.scalachess" %% "scalachess" % "17.16.1",
"com.github.lichess-org.scalachess" %% "scalachess" % "18.0.0",
"com.typesafe.akka" %% "akka-actor" % "2.6.21",
"com.typesafe.akka" %% "akka-stream" % "2.6.21",
"com.typesafe.akka" %% "akka-slf4j" % "2.6.21",
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18 changes: 13 additions & 5 deletions src/main/scala/lila/analyse/Info.scala
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Expand Up @@ -58,16 +58,24 @@ object Info:

def start(ply: Int) = Info(ply, Eval.initial, Nil)

private def strCp(s: String) = s.toIntOption.map(Cp.apply)
private def strMate(s: String) = s.toIntOption.map(Mate.apply)
private def strCp(s: String) = s.toIntOption.map(Cp.apply)

// keep mate in +/-0 only when it has the standard meaning
// (side to move is mated), like WhiteScore.exportMate
private def strMate(s: String, ply: Int): Option[Mate] =
val whiteToMove = ply % 2 == 0
s match
case "+0" => Option.when(!whiteToMove)(Mate(0))
case "-0" | "0" => Option.when(whiteToMove)(Mate(0))
case _ => s.toIntOption.map(Mate.apply)

private def decode(ply: Int, str: String): Option[Info] = str.split(separator) match
case Array() => Some(Info(ply, Eval.empty))
case Array(cp) => Some(Info(ply, Eval(strCp(cp), None, None)))
case Array(cp, ma) => Some(Info(ply, Eval(strCp(cp), strMate(ma), None)))
case Array(cp, ma, va) => Some(Info(ply, Eval(strCp(cp), strMate(ma), None), va.split(' ').toList))
case Array(cp, ma) => Some(Info(ply, Eval(strCp(cp), strMate(ma, ply), None)))
case Array(cp, ma, va) => Some(Info(ply, Eval(strCp(cp), strMate(ma, ply), None), va.split(' ').toList))
case Array(cp, ma, va, be) =>
Some(Info(ply, Eval(strCp(cp), strMate(ma), Uci.Move.fromChars(be)), va.split(' ').toList))
Some(Info(ply, Eval(strCp(cp), strMate(ma, ply), Uci.Move.fromChars(be)), va.split(' ').toList))
case _ => None

def decodeList(str: String, fromPly: Int): Option[List[Info]] = {
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