xuwei-k

import sjsonnew.BasicJsonProtocol._
import sbinary.DefaultProtocol._

val classFileCount = TaskKey[Int]("classFileCount")

Seq(Compile, Test).map { scope =>
  scope / classFileCount := {
    val s = streams.value.log
    val dir = (scope / classDirectory).value
    val current = (dir ** "*.class").get().size

xuwei-k

package fix

import scala.meta._
import scalafix.v1._

object WasCalledTimes {
  val Times: PartialFunction[Tree, Tree] = {
    case Term.Select(
          n,
          Term.Name("times")

xuwei-k

1. kantan.codecs.strings.URLCodecTests 10162
2. kantan.csv.URLCodecTests 10139
3. kantan.codecs.strings.URLCodecTests 10017
4. kantan.csv.URLCodecTests 9208
5. kantan.csv.cats.RowCodecInstancesTests 5479
6. kantan.csv.scalaz.RowCodecInstancesTests 5238
7. kantan.csv.cats.RowCodecInstancesTests 4815
8. kantan.csv.scalaz.RowCodecInstancesTests 4471
9. kantan.codecs.scalaz.DecoderTests 2469
10. kantan.codecs.scalaz.DecoderTests 1562

xuwei-k

import sbt._
import sbt.Keys._
import scalafix.sbt.ScalafixPlugin
import scalafix.sbt.ScalafixPlugin.autoImport.ScalafixConfig

/**
 * [[https://xuwei-k.hatenablog.com/entry/2025/03/11/214521]]
 */
object MyScalafixPlugin extends AutoPlugin {

xuwei-k

import scala.meta._
import scalafix.v1._

class ThenReturn extends SyntacticRule("ThenReturn") {
  val exclude = Seq("")
  override def fix(implicit doc: SyntacticDocument): Patch = {
    doc.input match {
      case f: Input.VirtualFile if exclude.exists(f.path.contains) =>
        Patch.empty
      case _ =>

xuwei-k

import com.typesafe.sbt.packager.universal.UniversalPlugin.autoImport._
import com.typesafe.sbt.web.SbtWeb.autoImport._
import play.twirl.sbt.Import.TwirlKeys
import sbt.Keys._
import sbt._
import sbtprojectmatrix.ProjectMatrixPlugin
import sbtprojectmatrix.ProjectMatrixPlugin.autoImport.projectMatrixBaseDirectory

object PlayLayoutProjectMatrixPlugin extends AutoPlugin {
  override def requires = play.sbt.PlayWeb && ProjectMatrixPlugin

xuwei-k

$ scala -Xprint:typer -e "for { a <- Option(2) ; b <- Option(a) } yield b"
[[syntax trees at end of                     typer]] // scalacmd15102494186904250690.scala
package <empty> {
  object Main extends scala.AnyRef {
    def <init>(): Main.type = {
      Main.super.<init>();
      ()
    };
    def main(args: Array[String]): Unit = {
      final class $anon extends scala.AnyRef {

xuwei-k

package example

import org.wartremover.WartTraverser
import org.wartremover.WartUniverse

object DisableDoobieReadInstance extends WartTraverser {
  override def apply(u: WartUniverse): u.Traverser =
    new u.Traverser(this) {
      import q.reflect.*
      override def traverseTree(tree: Tree)(owner: Symbol): Unit = {

xuwei-k

import scala.quoted.*

object Foo {
  inline def f[A](inline x: A): List[(String, String)] = ${ impl('x) }

  def impl[A](using q: Quotes)(x: Expr[A]): Expr[List[(String, String)]] = {
    import q.reflect.*
    x.asTerm match {
      case Inlined(_, _, Block(_, Match(_, i :: Nil))) =>
        i match {

xuwei-k

TaskKey[Seq[String]]("allMainClassNames") := Def.taskDyn {
  buildStructure.value.units
    .apply(Keys.thisProjectRef.value.build)
    .defined
    .values
    .toList
    .map { p =>
      LocalProject(p.id) / Compile / discoveredMainClasses
    }
    .join