4737452896

Build Type

github

Committed by GitHub

Commit Message

Merge 142706a45 into 682df3b9b

Pull Request Pull Request #1387: Enable coverage for Scala 3

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63.16

/core/src/main/scala/pureconfig/ConvertHelpers.scala

package pureconfig

import scala.reflect.ClassTag
import scala.util.control.NonFatal
import scala.util.{Failure, Success, Try}

import pureconfig.error._

/** Useful helpers for building `ConfigConvert` instances and dealing with results.
  */
trait ConvertHelpers {

  private[pureconfig] def toResult[A, B](f: A => B): A => Either[FailureReason, B] =
    v => tryToEither(Try(f(v)))

  private[pureconfig] def tryToEither[A](t: Try[A]): Either[FailureReason, A] =
    t match {
      case Success(v) => Right(v)
      case Failure(e) => Left(ExceptionThrown(e))
    }

  private[pureconfig] def ensureNonEmpty[A](implicit ct: ClassTag[A]): String => Either[FailureReason, String] = {
    case "" => Left(EmptyStringFound(ct.toString))
    case x => Right(x)
  }

  def catchReadError[A](f: String => A)(implicit ct: ClassTag[A]): String => Either[FailureReason, A] = { string =>
    try Right(f(string))
    catch {
      case NonFatal(ex) => Left(CannotConvert(string, ct.toString(), ex.toString))
    }
  }

  /** Convert a `String => Try` into a `String => Option[ConfigValueLocation] => Either` such that after application
    *   - `Success(t)` becomes `_ => Right(t)`
    *   - `Failure(e)` becomes `location => Left(CannotConvert(value, type, e.getMessage, location)`
    */
  def tryF[A](f: String => Try[A])(implicit ct: ClassTag[A]): String => Either[FailureReason, A] = { string =>
    f(string) match {
      case Success(t) => Right(t)
      case Failure(e) => Left(CannotConvert(string, ct.runtimeClass.getName, e.getLocalizedMessage))
    }
  }

  /** Convert a `String => Option` into a `String => Option[ConfigValueLocation] => Either` such that after application
    *   - `Some(t)` becomes `_ => Right(t)`
    *   - `None` becomes `location => Left(CannotConvert(value, type, "", location)`
    */
  def optF[A](f: String => Option[A])(implicit ct: ClassTag[A]): String => Either[FailureReason, A] = { string =>
    f(string) match {
      case Some(t) => Right(t)
      case None => Left(CannotConvert(string, ct.runtimeClass.getName, ""))
    }
  }
}

object ConvertHelpers extends ConvertHelpers

1	package pureconfig
2
3	import scala.reflect.ClassTag
4	import scala.util.control.NonFatal
5	import scala.util.{Failure, Success, Try}
6
7	import pureconfig.error._
8
9	/** Useful helpers for building `ConfigConvert` instances and dealing with results.
10	*/
11	trait ConvertHelpers {
12		1✔
13	private[pureconfig] def toResult[A, B](f: A => B): A => Either[FailureReason, B] =	1✔
14	v => tryToEither(Try(f(v)))
15		1✔
16	private[pureconfig] def tryToEither[A](t: Try[A]): Either[FailureReason, A] =
17	t match {	1✔
18	case Success(v) => Right(v)	×
19	case Failure(e) => Left(ExceptionThrown(e))
20	}
21		1✔
22	private[pureconfig] def ensureNonEmpty[A](implicit ct: ClassTag[A]): String => Either[FailureReason, String] = {	1✔
23	case "" => Left(EmptyStringFound(ct.toString))	1✔
24	case x => Right(x)
25	}
26		1✔
27	def catchReadError[A](f: String => A)(implicit ct: ClassTag[A]): String => Either[FailureReason, A] = { string =>	×
28	try Right(f(string))
29	catch {	1✔
30	case NonFatal(ex) => Left(CannotConvert(string, ct.toString(), ex.toString))
31	}
32	}
33
34	/** Convert a `String => Try` into a `String => Option[ConfigValueLocation] => Either` such that after application
35	* - `Success(t)` becomes `_ => Right(t)`
36	* - `Failure(e)` becomes `location => Left(CannotConvert(value, type, e.getMessage, location)`
37	*/	×
38	def tryF[A](f: String => Try[A])(implicit ct: ClassTag[A]): String => Either[FailureReason, A] = { string =>	×
39	f(string) match {	×
40	case Success(t) => Right(t)	×
41	case Failure(e) => Left(CannotConvert(string, ct.runtimeClass.getName, e.getLocalizedMessage))
42	}
43	}
44
45	/** Convert a `String => Option` into a `String => Option[ConfigValueLocation] => Either` such that after application
46	* - `Some(t)` becomes `_ => Right(t)`
47	* - `None` becomes `location => Left(CannotConvert(value, type, "", location)`
48	*/	1✔
49	def optF[A](f: String => Option[A])(implicit ct: ClassTag[A]): String => Either[FailureReason, A] = { string =>	1✔
50	f(string) match {	1✔
51	case Some(t) => Right(t)	×
52	case None => Left(CannotConvert(string, ct.runtimeClass.getName, ""))
53	}
54	}
55	}
56
57	object ConvertHelpers extends ConvertHelpers

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