diff options
Diffstat (limited to 'src/library/scala/collection/mutable/ArrayOps.scala')
| -rw-r--r-- | src/library/scala/collection/mutable/ArrayOps.scala | 77 |
1 files changed, 41 insertions, 36 deletions
diff --git a/src/library/scala/collection/mutable/ArrayOps.scala b/src/library/scala/collection/mutable/ArrayOps.scala index 04bb1074ea..5de3dad256 100644 --- a/src/library/scala/collection/mutable/ArrayOps.scala +++ b/src/library/scala/collection/mutable/ArrayOps.scala @@ -12,9 +12,7 @@ package mutable import java.util -import scala.compat.Platform.arraycopy import scala.reflect.ClassTag -import scala.runtime.ScalaRunTime._ import parallel.mutable.ParArray /** This class serves as a wrapper for `Array`s with all the operations found in @@ -35,20 +33,29 @@ import parallel.mutable.ParArray * @define mayNotTerminateInf * @define willNotTerminateInf */ -@deprecatedInheritance("ArrayOps will be sealed to facilitate greater flexibility with array/collections integration in future releases.", "2.11.0") -trait ArrayOps[T] extends Any with ArrayLike[T, Array[T]] with CustomParallelizable[T, ParArray[T]] { +sealed trait ArrayOps[T] extends Any with ArrayLike[T, Array[T]] with CustomParallelizable[T, ParArray[T]] { private def elementClass: Class[_] = - arrayElementClass(repr.getClass) + repr.getClass.getComponentType override def copyToArray[U >: T](xs: Array[U], start: Int, len: Int) { - var l = math.min(len, repr.length) - if (xs.length - start < l) l = xs.length - start max 0 - Array.copy(repr, 0, xs, start, l) + val l = len min repr.length min (xs.length - start) + if (l > 0) Array.copy(repr, 0, xs, start, l) + } + + override def slice(from: Int, until: Int): Array[T] = { + val lo = math.max(from, 0) + val hi = math.min(math.max(until, 0), repr.length) + val size = math.max(hi - lo, 0) + val result = java.lang.reflect.Array.newInstance(elementClass, size) + if (size > 0) { + Array.copy(repr, lo, result, 0, size) + } + result.asInstanceOf[Array[T]] } override def toArray[U >: T : ClassTag]: Array[U] = { - val thatElementClass = arrayElementClass(implicitly[ClassTag[U]]) + val thatElementClass = implicitly[ClassTag[U]].runtimeClass if (elementClass eq thatElementClass) repr.asInstanceOf[Array[U]] else @@ -96,7 +103,7 @@ trait ArrayOps[T] extends Any with ArrayLike[T, Array[T]] with CustomParalleliza val bb: Builder[Array[U], Array[Array[U]]] = Array.newBuilder(ClassTag[Array[U]](elementClass)) if (isEmpty) bb.result() else { - def mkRowBuilder() = Array.newBuilder(ClassTag[U](arrayElementClass(elementClass))) + def mkRowBuilder() = Array.newBuilder(ClassTag[U](elementClass.getComponentType)) val bs = asArray(head) map (_ => mkRowBuilder()) for (xs <- this) { var i = 0 @@ -109,9 +116,9 @@ trait ArrayOps[T] extends Any with ArrayLike[T, Array[T]] with CustomParalleliza bb.result() } } - + /** Converts an array of pairs into an array of first elements and an array of second elements. - * + * * @tparam T1 the type of the first half of the element pairs * @tparam T2 the type of the second half of the element pairs * @param asPair an implicit conversion which asserts that the element type @@ -137,9 +144,9 @@ trait ArrayOps[T] extends Any with ArrayLike[T, Array[T]] with CustomParalleliza } (a1, a2) } - + /** Converts an array of triples into three arrays, one containing the elements from each position of the triple. - * + * * @tparam T1 the type of the first of three elements in the triple * @tparam T2 the type of the second of three elements in the triple * @tparam T3 the type of the third of three elements in the triple @@ -171,10 +178,8 @@ trait ArrayOps[T] extends Any with ArrayLike[T, Array[T]] with CustomParalleliza } (a1, a2, a3) } - def seq = thisCollection - } /** to provide binary compat for 2.11 and 2.12 this class contains @@ -211,12 +216,12 @@ object ArrayOps { private val emptyCharArray = new Array[Char](0) private val emptyBooleanArray = new Array[Boolean](0) - /** A class of `ArrayOps` for arrays containing reference types. */ + /** A subclass of `ArrayOps` for arrays containing reference types. */ final class ofRef[T <: AnyRef](override val repr: Array[T]) extends AnyVal with ArrayOpsImpl[T] with ArrayLike[T, Array[T]] { override protected[this] def thisCollection: WrappedArray[T] = new WrappedArray.ofRef[T](repr) override protected[this] def toCollection(repr: Array[T]): WrappedArray[T] = new WrappedArray.ofRef[T](repr) - override protected[this] def newBuilder = new ArrayBuilder.ofRef[T]()(ClassTag[T](arrayElementClass(repr.getClass))) + override protected[this] def newBuilder = new ArrayBuilder.ofRef[T]()(ClassTag[T](repr.getClass.getComponentType)) protected override def emptyImpl:Array[T] = util.Arrays.copyOf[T](repr,0) protected override def sliceImpl(from: Int, until: Int): Array[T] = util.Arrays.copyOfRange[T](repr, from, until) @@ -225,8 +230,8 @@ object ArrayOps { def update(index: Int, elem: T) { repr(index) = elem } } - /** A class of `ArrayOps` for arrays containing `byte`s. */ -final class ofByte(override val repr: Array[Byte]) extends AnyVal with ArrayOpsImpl[Byte] with ArrayLike[Byte, Array[Byte]] { + /** A subclass of `ArrayOps` for arrays containing `Byte`s. */ + final class ofByte(override val repr: Array[Byte]) extends AnyVal with ArrayOpsImpl[Byte] with ArrayLike[Byte, Array[Byte]] { override protected[this] def thisCollection: WrappedArray[Byte] = new WrappedArray.ofByte(repr) override protected[this] def toCollection(repr: Array[Byte]): WrappedArray[Byte] = new WrappedArray.ofByte(repr) @@ -239,8 +244,8 @@ final class ofByte(override val repr: Array[Byte]) extends AnyVal with ArrayOpsI def update(index: Int, elem: Byte) { repr(index) = elem } } - /** A class of `ArrayOps` for arrays containing `short`s. */ -final class ofShort(override val repr: Array[Short]) extends AnyVal with ArrayOpsImpl[Short] with ArrayLike[Short, Array[Short]] { + /** A subclass of `ArrayOps` for arrays containing `Short`s. */ + final class ofShort(override val repr: Array[Short]) extends AnyVal with ArrayOpsImpl[Short] with ArrayLike[Short, Array[Short]] { override protected[this] def thisCollection: WrappedArray[Short] = new WrappedArray.ofShort(repr) override protected[this] def toCollection(repr: Array[Short]): WrappedArray[Short] = new WrappedArray.ofShort(repr) @@ -253,8 +258,8 @@ final class ofShort(override val repr: Array[Short]) extends AnyVal with ArrayOp def update(index: Int, elem: Short) { repr(index) = elem } } - /** A class of `ArrayOps` for arrays containing `char`s. */ -final class ofChar(override val repr: Array[Char]) extends AnyVal with ArrayOpsImpl[Char] with ArrayLike[Char, Array[Char]] { + /** A subclass of `ArrayOps` for arrays containing `Char`s. */ + final class ofChar(override val repr: Array[Char]) extends AnyVal with ArrayOpsImpl[Char] with ArrayLike[Char, Array[Char]] { override protected[this] def thisCollection: WrappedArray[Char] = new WrappedArray.ofChar(repr) override protected[this] def toCollection(repr: Array[Char]): WrappedArray[Char] = new WrappedArray.ofChar(repr) @@ -267,8 +272,8 @@ final class ofChar(override val repr: Array[Char]) extends AnyVal with ArrayOpsI def update(index: Int, elem: Char) { repr(index) = elem } } - /** A class of `ArrayOps` for arrays containing `int`s. */ -final class ofInt(override val repr: Array[Int]) extends AnyVal with ArrayOpsImpl[Int] with ArrayLike[Int, Array[Int]] { + /** A subclass of `ArrayOps` for arrays containing `Int`s. */ + final class ofInt(override val repr: Array[Int]) extends AnyVal with ArrayOpsImpl[Int] with ArrayLike[Int, Array[Int]] { override protected[this] def thisCollection: WrappedArray[Int] = new WrappedArray.ofInt(repr) override protected[this] def toCollection(repr: Array[Int]): WrappedArray[Int] = new WrappedArray.ofInt(repr) @@ -281,8 +286,8 @@ final class ofInt(override val repr: Array[Int]) extends AnyVal with ArrayOpsImp def update(index: Int, elem: Int) { repr(index) = elem } } - /** A class of `ArrayOps` for arrays containing `long`s. */ -final class ofLong(override val repr: Array[Long]) extends AnyVal with ArrayOpsImpl[Long] with ArrayLike[Long, Array[Long]] { + /** A subclass of `ArrayOps` for arrays containing `Long`s. */ + final class ofLong(override val repr: Array[Long]) extends AnyVal with ArrayOpsImpl[Long] with ArrayLike[Long, Array[Long]] { override protected[this] def thisCollection: WrappedArray[Long] = new WrappedArray.ofLong(repr) override protected[this] def toCollection(repr: Array[Long]): WrappedArray[Long] = new WrappedArray.ofLong(repr) @@ -295,8 +300,8 @@ final class ofLong(override val repr: Array[Long]) extends AnyVal with ArrayOpsI def update(index: Int, elem: Long) { repr(index) = elem } } - /** A class of `ArrayOps` for arrays containing `float`s. */ -final class ofFloat(override val repr: Array[Float]) extends AnyVal with ArrayOpsImpl[Float] with ArrayLike[Float, Array[Float]] { + /** A subclass of `ArrayOps` for arrays containing `Float`s. */ + final class ofFloat(override val repr: Array[Float]) extends AnyVal with ArrayOpsImpl[Float] with ArrayLike[Float, Array[Float]] { override protected[this] def thisCollection: WrappedArray[Float] = new WrappedArray.ofFloat(repr) override protected[this] def toCollection(repr: Array[Float]): WrappedArray[Float] = new WrappedArray.ofFloat(repr) @@ -309,8 +314,8 @@ final class ofFloat(override val repr: Array[Float]) extends AnyVal with ArrayOp def update(index: Int, elem: Float) { repr(index) = elem } } - /** A class of `ArrayOps` for arrays containing `double`s. */ -final class ofDouble(override val repr: Array[Double]) extends AnyVal with ArrayOpsImpl[Double] with ArrayLike[Double, Array[Double]] { + /** A subclass of `ArrayOps` for arrays containing `Double`s. */ + final class ofDouble(override val repr: Array[Double]) extends AnyVal with ArrayOpsImpl[Double] with ArrayLike[Double, Array[Double]] { override protected[this] def thisCollection: WrappedArray[Double] = new WrappedArray.ofDouble(repr) override protected[this] def toCollection(repr: Array[Double]): WrappedArray[Double] = new WrappedArray.ofDouble(repr) @@ -323,8 +328,8 @@ final class ofDouble(override val repr: Array[Double]) extends AnyVal with Array def update(index: Int, elem: Double) { repr(index) = elem } } - /** A class of `ArrayOps` for arrays containing `boolean`s. */ -final class ofBoolean(override val repr: Array[Boolean]) extends AnyVal with ArrayOpsImpl[Boolean] with ArrayLike[Boolean, Array[Boolean]] { + /** A subclass of `ArrayOps` for arrays containing `Boolean`s. */ + final class ofBoolean(override val repr: Array[Boolean]) extends AnyVal with ArrayOpsImpl[Boolean] with ArrayLike[Boolean, Array[Boolean]] { override protected[this] def thisCollection: WrappedArray[Boolean] = new WrappedArray.ofBoolean(repr) override protected[this] def toCollection(repr: Array[Boolean]): WrappedArray[Boolean] = new WrappedArray.ofBoolean(repr) @@ -337,8 +342,8 @@ final class ofBoolean(override val repr: Array[Boolean]) extends AnyVal with Arr def update(index: Int, elem: Boolean) { repr(index) = elem } } - /** A class of `ArrayOps` for arrays of `Unit` types. */ -final class ofUnit(override val repr: Array[Unit]) extends AnyVal with ArrayOpsImpl[Unit] with ArrayLike[Unit, Array[Unit]] { + /** A subclass of `ArrayOps` for arrays of `Unit` types. */ + final class ofUnit(override val repr: Array[Unit]) extends AnyVal with ArrayOpsImpl[Unit] with ArrayLike[Unit, Array[Unit]] { override protected[this] def thisCollection: WrappedArray[Unit] = new WrappedArray.ofUnit(repr) override protected[this] def toCollection(repr: Array[Unit]): WrappedArray[Unit] = new WrappedArray.ofUnit(repr) |