mdoc.internal.document.MdocExceptions.scala Maven / Gradle / Ivy

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package mdoc.internal.document

import java.util.Collections
import scala.annotation.tailrec

object MdocExceptions {
  def trimStacktrace(e: Throwable): Unit = {
    val isVisited =
      Collections.newSetFromMap(new java.util.IdentityHashMap[Throwable, java.lang.Boolean])
    @tailrec def loop(ex: Throwable): Unit = {
      isVisited.add(ex)
      val stacktrace = ex.getStackTrace.takeWhile(!_.getClassName.startsWith("mdoc"))
      ex.setStackTrace(stacktrace)
      // avoid infinite loop when traversing exceptions cyclic dependencies between causes.
      if (e.getCause != null && !isVisited.contains(e.getCause)) {
        loop(e.getCause)
      }
    }
    loop(e)
  }
}