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Chunk213And3Compat.scala
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Chunk213And3Compat.scala
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/*
* Copyright (c) 2013 Functional Streams for Scala
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of
* this software and associated documentation files (the "Software"), to deal in
* the Software without restriction, including without limitation the rights to
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
* the Software, and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
package fs2
import scala.collection.{Iterable => GIterable, Factory, SeqFactory}
import scala.collection.immutable.ArraySeq
import scala.reflect.ClassTag
private[fs2] trait Chunk213And3Compat[+O] {
self: Chunk[O] =>
def toArraySeq[O2 >: O: ClassTag]: ArraySeq[O2] = {
val array: Array[O2] = new Array[O2](size)
copyToArray(array)
ArraySeq.unsafeWrapArray[O2](array)
}
def toArraySeqUntagged: ArraySeq[O] = {
val buf = ArraySeq.untagged.newBuilder[O]
buf.sizeHint(size)
var i = 0
while (i < size) {
buf += apply(i)
i += 1
}
buf.result()
}
}
private[fs2] trait ChunkAsSeq213And3Compat[+O] {
self: ChunkAsSeq[O] =>
override def knownSize: Int =
chunk.size
override def copyToArray[O2 >: O](xs: Array[O2], start: Int, len: Int): Int = {
chunk.take(len).copyToArray(xs, start)
math.min(len, xs.length - start)
}
override def map[O2](f: O => O2): IndexedSeq[O2] =
new ChunkAsSeq(chunk.map(f))
override def zipWithIndex: IndexedSeq[(O, Int)] =
new ChunkAsSeq(chunk.zipWithIndex)
override def tapEach[U](f: O => U): IndexedSeq[O] = {
chunk.foreach { o => f(o); () }
this
}
override def to[C1](factory: Factory[O, C1]): C1 =
chunk.to(factory)
override val iterableFactory: SeqFactory[IndexedSeq] =
ArraySeq.untagged
override lazy val empty: IndexedSeq[O] =
new ChunkAsSeq(Chunk.empty)
}
private[fs2] trait ChunkCompanion213And3Compat {
self: Chunk.type =>
protected def platformFrom[O](i: GIterable[O]): Option[Chunk[O]] =
i match {
case arraySeq: ArraySeq[O] =>
val arr = arraySeq.unsafeArray.asInstanceOf[Array[O]]
Some(array(arr)(ClassTag[O](arr.getClass.getComponentType)))
case _ =>
None
}
/** Creates a chunk backed by an immutable `ArraySeq`. */
@deprecated(
"Use the `from` general factory instead",
"3.9.0"
)
def arraySeq[O](arraySeq: ArraySeq[O]): Chunk[O] =
from(arraySeq)
/** Creates a chunk from a `scala.collection.IterableOnce`. */
def iterableOnce[O](i: IterableOnce[O]): Chunk[O] =
iterator(i.iterator)
}