sbt.internal.io.ErrorHandling.scala Maven / Gradle / Ivy

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/*
 * sbt IO
 * Copyright Scala Center, Lightbend, and Mark Harrah
 *
 * Licensed under Apache License 2.0
 * SPDX-License-Identifier: Apache-2.0
 *
 * See the NOTICE file distributed with this work for
 * additional information regarding copyright ownership.
 */

package sbt.internal.io

import java.io.IOException

private[sbt] object ErrorHandling {
  def translate[T](msg: => String)(f: => T) =
    try {
      f
    } catch {
      case e: IOException => throw new TranslatedIOException(msg + e.toString, e)
      case e: Exception   => throw new TranslatedException(msg + e.toString, e)
    }

  def wideConvert[T](f: => T): Either[Throwable, T] =
    try {
      Right(f)
    } catch {
      case ex @ (_: Exception | _: StackOverflowError)     => Left(ex)
      case err @ (_: ThreadDeath | _: VirtualMachineError) => throw err
      case x: Throwable                                    => Left(x)
    }

  def convert[T](f: => T): Either[Exception, T] =
    try {
      Right(f)
    } catch { case e: Exception => Left(e) }

  def reducedToString(e: Throwable): String =
    if (e.getClass == classOf[RuntimeException]) {
      val msg = e.getMessage
      if (msg == null || msg.isEmpty) e.toString else msg
    } else
      e.toString
}

private[sbt] sealed class TranslatedException private[sbt] (msg: String, cause: Throwable)
    extends RuntimeException(msg, cause) {
  override def toString = msg
}

private[sbt] final class TranslatedIOException private[sbt] (msg: String, cause: IOException)
    extends TranslatedException(msg, cause)