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• ObjectSelfType.scala

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fix.ObjectSelfType.scala Maven / Gradle / Ivy

package fix

import scala.meta.Defn
import scala.meta.XtensionCollectionLikeUI
import scalafix.Diagnostic
import scalafix.Patch
import scalafix.lint.LintSeverity
import scalafix.v1.SyntacticDocument
import scalafix.v1.SyntacticRule
import scalafix.v1.XtensionOptionPatch
import scalafix.v1.XtensionSeqPatch

class ObjectSelfType extends SyntacticRule("ObjectSelfType") {
  override def isLinter = true

  override def fix(implicit doc: SyntacticDocument): Patch = {
    doc.tree.collect { case obj: Defn.Object =>
      obj.templ.body.selfOpt.collect {
        case self if self.decltpe.isDefined =>
          Patch.lint(
            Diagnostic(
              id = "",
              position = self.pos,
              message = "objects must not have a self type",
              severity = LintSeverity.Warning,
            )
          )
      }.asPatch
    }.asPatch
  }
}