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commons #82 ReflectionUtils: java.lang.AssertionError: assertion fail… #83

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Merged
wajda merged 1 commit into from
Sep 16, 2021
Merged

commons #82 ReflectionUtils: java.lang.AssertionError: assertion fail… #83

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36 changes: 16 additions & 20 deletions src/main/scala/za/co/absa/commons/reflect/ReflectionUtils.scala
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Original file line number Diff line number Diff line change
Expand Up @@ -19,7 +19,6 @@ package za.co.absa.commons.reflect
import scala.annotation.tailrec
import scala.collection.concurrent.TrieMap
import scala.reflect.ClassTag
import scala.reflect.internal.Symbols
import scala.reflect.runtime.universe._
import scala.tools.reflect.ToolBox

Expand Down Expand Up @@ -120,26 +119,23 @@ object ReflectionUtils {
}

def reflectClass(c: Class[_]) = {
val members =
try mirror.classSymbol(c).toType.decls
catch {
// a workaround for Scala bug #12190
case _: Symbols#CyclicReference => Nil
// error reading Scala signature
case e: RuntimeException
if e.getMessage.toLowerCase.contains("scala signature") => Nil
}
val maybeMember = util.Try {
val members = mirror.classSymbol(c).toType.decls
members
.filter(smb => (
smb.toString.endsWith(s" $fieldName")
&& smb.isTerm
&& !smb.isConstructor
&& (!smb.isMethod || smb.asMethod.paramLists.forall(_.isEmpty))
))
.minBy(!_.isMethod)

val maybeMember = members
.filter(smb => (
smb.toString.endsWith(s" $fieldName")
&& smb.isTerm
&& !smb.isConstructor
&& (!smb.isMethod || smb.asMethod.paramLists.forall(_.isEmpty))
))
.toArray
.sortBy(!_.isMethod) // method members first
.headOption
// Unless:
// - `Symbols#CyclicReference` (a workaround for Scala bug #12190)
// - `RuntimeException("scala signature")` (#80, #82)
// - ... or any other runtime error during Scala reflection
// }
}.toOption

maybeMember
.map(m => {
Expand Down