Configure JMH benchmarking

benchmark/src/main/scala/net/marek/tyre/benchmark/RegexBenchmark.scala

@@ -0,0 +1,32 @@
+package net.marek.tyre.benchmark
+
+import org.openjdk.jmh.annotations.{Benchmark, Scope, State}
+import net.marek.tyre.*
+import scala.util.Random
+
+@State(Scope.Thread)
+class RegexBenchmark:
+
+  @Benchmark
+  def runTyre: Unit = data.foreach(tyreTimeParser.run)
+
+  @Benchmark
+  def runRegex: Unit = data.foreach:
+    case regexTimeParser(h, m) => (h.toInt, m.toInt)
+
+  private val tyreTimeParser =
+    val ht = tyre"[0-1]\d|2[0-3]"
+    val mt = tyre"[0-5]\d"
+    val tt = tyre"$ht:$mt".map: t =>
+      val ((h10,h1), _, m10, m1) = t
+      (h10.toInt * 10 + h1.toInt, m10.toInt * 10 + m1.toInt)
+    tt.compile()
+
+  private val regexTimeParser = """([0-1]\d|2[0-3]):([0-5]\d)""".r
+
+  private val rand = Random()
+  private def drawTime =
+    val h = rand.between(0,24)
+    val m = rand.between(0,60)
+    f"$h%02d:$m%02d"
+  private val data = List.tabulate(100_000)(_ => drawTime)

build.sbt

@@ -28,6 +28,14 @@ lazy val root = (project in file("."))
   )
   .settings(publishSettings: _*)
 
+lazy val benchmark = (project in file("benchmark"))
+  .settings(basicSettings: _*)
+  .settings(
+    name := "tyre-benchmark"
+  )
+  .enablePlugins(JmhPlugin)
+  .dependsOn(root)
+
 lazy val scalacSettings = Seq(
   "-deprecation", // Emit warning and location for usages of deprecated APIs.
   "-explain", // Explain errors in more detail.

project/plugins.sbt

@@ -1,2 +1,3 @@
 addSbtPlugin("org.scalameta" % "sbt-scalafmt" % "2.5.2")
 addSbtPlugin("com.github.sbt" % "sbt-ci-release" % "1.5.12")
+addSbtPlugin("pl.project13.scala" % "sbt-jmh" % "0.4.7")