diff options
Diffstat (limited to 'src/library/scala/collection/convert/WrapAsJava.scala')
| -rw-r--r-- | src/library/scala/collection/convert/WrapAsJava.scala | 81 |
1 files changed, 56 insertions, 25 deletions
diff --git a/src/library/scala/collection/convert/WrapAsJava.scala b/src/library/scala/collection/convert/WrapAsJava.scala index 9916fe9843..e3a064b79d 100644 --- a/src/library/scala/collection/convert/WrapAsJava.scala +++ b/src/library/scala/collection/convert/WrapAsJava.scala @@ -13,7 +13,27 @@ package convert import java.{ lang => jl, util => ju }, java.util.{ concurrent => juc } import scala.language.implicitConversions -trait WrapAsJava { +@deprecated("use JavaConverters or consider ToJavaImplicits", since="2.12.0") +trait WrapAsJava extends LowPriorityWrapAsJava { + // provide higher-priority implicits with names that don't exist in JavaConverters for the case + // when importing both JavaConverters._ and JavaConversions._. otherwise implicit conversions + // would not apply, see https://github.com/scala/scala/pull/5109#issuecomment-212417789 + implicit def `deprecated asJavaIterator`[A](it: Iterator[A]): ju.Iterator[A] = asJavaIterator(it) + implicit def `deprecated asJavaEnumeration`[A](it: Iterator[A]): ju.Enumeration[A] = asJavaEnumeration(it) + implicit def `deprecated asJavaIterable`[A](i: Iterable[A]): jl.Iterable[A] = asJavaIterable(i) + implicit def `deprecated asJavaCollection`[A](it: Iterable[A]): ju.Collection[A] = asJavaCollection(it) + implicit def `deprecated bufferAsJavaList`[A](b: mutable.Buffer[A]): ju.List[A] = bufferAsJavaList(b) + implicit def `deprecated mutableSeqAsJavaList`[A](seq: mutable.Seq[A]): ju.List[A] = mutableSeqAsJavaList(seq) + implicit def `deprecated seqAsJavaList`[A](seq: Seq[A]): ju.List[A] = seqAsJavaList(seq) + implicit def `deprecated mutableSetAsJavaSet`[A](s: mutable.Set[A]): ju.Set[A] = mutableSetAsJavaSet(s) + implicit def `deprecated setAsJavaSet`[A](s: Set[A]): ju.Set[A] = setAsJavaSet(s) + implicit def `deprecated mutableMapAsJavaMap`[A, B](m: mutable.Map[A, B]): ju.Map[A, B] = mutableMapAsJavaMap(m) + implicit def `deprecated asJavaDictionary`[A, B](m: mutable.Map[A, B]): ju.Dictionary[A, B] = asJavaDictionary(m) + implicit def `deprecated mapAsJavaMap`[A, B](m: Map[A, B]): ju.Map[A, B] = mapAsJavaMap(m) + implicit def `deprecated mapAsJavaConcurrentMap`[A, B](m: concurrent.Map[A, B]): juc.ConcurrentMap[A, B] = mapAsJavaConcurrentMap(m) +} + +private[convert] trait LowPriorityWrapAsJava { import Wrappers._ /** @@ -30,8 +50,9 @@ trait WrapAsJava { * @return A Java Iterator view of the argument. */ implicit def asJavaIterator[A](it: Iterator[A]): ju.Iterator[A] = it match { - case JIteratorWrapper(wrapped) => wrapped.asInstanceOf[ju.Iterator[A]] - case _ => IteratorWrapper(it) + case null => null + case JIteratorWrapper(wrapped) => wrapped.asInstanceOf[ju.Iterator[A]] + case _ => IteratorWrapper(it) } /** @@ -48,8 +69,9 @@ trait WrapAsJava { * @return A Java Enumeration view of the argument. */ implicit def asJavaEnumeration[A](it: Iterator[A]): ju.Enumeration[A] = it match { + case null => null case JEnumerationWrapper(wrapped) => wrapped.asInstanceOf[ju.Enumeration[A]] - case _ => IteratorWrapper(it) + case _ => IteratorWrapper(it) } /** @@ -66,8 +88,9 @@ trait WrapAsJava { * @return A Java Iterable view of the argument. */ implicit def asJavaIterable[A](i: Iterable[A]): jl.Iterable[A] = i match { - case JIterableWrapper(wrapped) => wrapped.asInstanceOf[jl.Iterable[A]] - case _ => IterableWrapper(i) + case null => null + case JIterableWrapper(wrapped) => wrapped.asInstanceOf[jl.Iterable[A]] + case _ => IterableWrapper(i) } /** @@ -82,8 +105,9 @@ trait WrapAsJava { * @return A Java Collection view of the argument. */ implicit def asJavaCollection[A](it: Iterable[A]): ju.Collection[A] = it match { - case JCollectionWrapper(wrapped) => wrapped.asInstanceOf[ju.Collection[A]] - case _ => new IterableWrapper(it) + case null => null + case JCollectionWrapper(wrapped) => wrapped.asInstanceOf[ju.Collection[A]] + case _ => new IterableWrapper(it) } /** @@ -100,8 +124,9 @@ trait WrapAsJava { * @return A Java List view of the argument. */ implicit def bufferAsJavaList[A](b: mutable.Buffer[A]): ju.List[A] = b match { - case JListWrapper(wrapped) => wrapped - case _ => new MutableBufferWrapper(b) + case null => null + case JListWrapper(wrapped) => wrapped + case _ => new MutableBufferWrapper(b) } /** @@ -118,8 +143,9 @@ trait WrapAsJava { * @return A Java List view of the argument. */ implicit def mutableSeqAsJavaList[A](seq: mutable.Seq[A]): ju.List[A] = seq match { - case JListWrapper(wrapped) => wrapped - case _ => new MutableSeqWrapper(seq) + case null => null + case JListWrapper(wrapped) => wrapped + case _ => new MutableSeqWrapper(seq) } /** @@ -136,8 +162,9 @@ trait WrapAsJava { * @return A Java List view of the argument. */ implicit def seqAsJavaList[A](seq: Seq[A]): ju.List[A] = seq match { - case JListWrapper(wrapped) => wrapped.asInstanceOf[ju.List[A]] - case _ => new SeqWrapper(seq) + case null => null + case JListWrapper(wrapped) => wrapped.asInstanceOf[ju.List[A]] + case _ => new SeqWrapper(seq) } /** @@ -154,8 +181,9 @@ trait WrapAsJava { * @return A Java Set view of the argument. */ implicit def mutableSetAsJavaSet[A](s: mutable.Set[A]): ju.Set[A] = s match { + case null => null case JSetWrapper(wrapped) => wrapped - case _ => new MutableSetWrapper(s) + case _ => new MutableSetWrapper(s) } /** @@ -172,8 +200,9 @@ trait WrapAsJava { * @return A Java Set view of the argument. */ implicit def setAsJavaSet[A](s: Set[A]): ju.Set[A] = s match { + case null => null case JSetWrapper(wrapped) => wrapped - case _ => new SetWrapper(s) + case _ => new SetWrapper(s) } /** @@ -190,9 +219,9 @@ trait WrapAsJava { * @return A Java Map view of the argument. */ implicit def mutableMapAsJavaMap[A, B](m: mutable.Map[A, B]): ju.Map[A, B] = m match { - //case JConcurrentMapWrapper(wrapped) => wrapped + case null => null case JMapWrapper(wrapped) => wrapped - case _ => new MutableMapWrapper(m) + case _ => new MutableMapWrapper(m) } /** @@ -210,9 +239,9 @@ trait WrapAsJava { * @return A Java `Dictionary` view of the argument. */ implicit def asJavaDictionary[A, B](m: mutable.Map[A, B]): ju.Dictionary[A, B] = m match { - //case JConcurrentMapWrapper(wrapped) => wrapped - case JDictionaryWrapper(wrapped) => wrapped - case _ => new DictionaryWrapper(m) + case null => null + case JDictionaryWrapper(wrapped) => wrapped + case _ => new DictionaryWrapper(m) } /** @@ -230,9 +259,9 @@ trait WrapAsJava { * @return A Java `Map` view of the argument. */ implicit def mapAsJavaMap[A, B](m: Map[A, B]): ju.Map[A, B] = m match { - //case JConcurrentMapWrapper(wrapped) => wrapped + case null => null case JMapWrapper(wrapped) => wrapped.asInstanceOf[ju.Map[A, B]] - case _ => new MapWrapper(m) + case _ => new MapWrapper(m) } /** @@ -251,9 +280,11 @@ trait WrapAsJava { * @return A Java `ConcurrentMap` view of the argument. */ implicit def mapAsJavaConcurrentMap[A, B](m: concurrent.Map[A, B]): juc.ConcurrentMap[A, B] = m match { + case null => null case JConcurrentMapWrapper(wrapped) => wrapped - case _ => new ConcurrentMapWrapper(m) + case _ => new ConcurrentMapWrapper(m) } } -object WrapAsJava extends WrapAsJava { } +@deprecated("use JavaConverters or consider ImplicitConversionsToJava", since="2.12.0") +object WrapAsJava extends WrapAsJava |