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asSequence returns empty sequence singleton for empty arrays and strings.

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#KT-8450 Fixed
This commit is contained in:
Ilya Gorbunov
2015-07-10 19:15:56 +03:00
parent 5f8a652a38
commit 96b79eebe7
2 changed files with 21 additions and 1 deletions
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libraries/stdlib/src/generated/_Sequences.kt
+10
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@@ -14,6 +14,7 @@ import java.util.Collections // TODO: it's temporary while we have java.util.Col
* Returns a sequence from the given collection.
*/
public fun <T> Array<out T>.asSequence(): Sequence<T> {
if (isEmpty()) return emptySequence()
return object : Sequence<T> {
override fun iterator(): Iterator<T> {
return this@asSequence.iterator()
@@ -25,6 +26,7 @@ public fun <T> Array<out T>.asSequence(): Sequence<T> {
* Returns a sequence from the given collection.
*/
public fun BooleanArray.asSequence(): Sequence<Boolean> {
if (isEmpty()) return emptySequence()
return object : Sequence<Boolean> {
override fun iterator(): Iterator<Boolean> {
return this@asSequence.iterator()
@@ -36,6 +38,7 @@ public fun BooleanArray.asSequence(): Sequence<Boolean> {
* Returns a sequence from the given collection.
*/
public fun ByteArray.asSequence(): Sequence<Byte> {
if (isEmpty()) return emptySequence()
return object : Sequence<Byte> {
override fun iterator(): Iterator<Byte> {
return this@asSequence.iterator()
@@ -47,6 +50,7 @@ public fun ByteArray.asSequence(): Sequence<Byte> {
* Returns a sequence from the given collection.
*/
public fun CharArray.asSequence(): Sequence<Char> {
if (isEmpty()) return emptySequence()
return object : Sequence<Char> {
override fun iterator(): Iterator<Char> {
return this@asSequence.iterator()
@@ -58,6 +62,7 @@ public fun CharArray.asSequence(): Sequence<Char> {
* Returns a sequence from the given collection.
*/
public fun DoubleArray.asSequence(): Sequence<Double> {
if (isEmpty()) return emptySequence()
return object : Sequence<Double> {
override fun iterator(): Iterator<Double> {
return this@asSequence.iterator()
@@ -69,6 +74,7 @@ public fun DoubleArray.asSequence(): Sequence<Double> {
* Returns a sequence from the given collection.
*/
public fun FloatArray.asSequence(): Sequence<Float> {
if (isEmpty()) return emptySequence()
return object : Sequence<Float> {
override fun iterator(): Iterator<Float> {
return this@asSequence.iterator()
@@ -80,6 +86,7 @@ public fun FloatArray.asSequence(): Sequence<Float> {
* Returns a sequence from the given collection.
*/
public fun IntArray.asSequence(): Sequence<Int> {
if (isEmpty()) return emptySequence()
return object : Sequence<Int> {
override fun iterator(): Iterator<Int> {
return this@asSequence.iterator()
@@ -91,6 +98,7 @@ public fun IntArray.asSequence(): Sequence<Int> {
* Returns a sequence from the given collection.
*/
public fun LongArray.asSequence(): Sequence<Long> {
if (isEmpty()) return emptySequence()
return object : Sequence<Long> {
override fun iterator(): Iterator<Long> {
return this@asSequence.iterator()
@@ -102,6 +110,7 @@ public fun LongArray.asSequence(): Sequence<Long> {
* Returns a sequence from the given collection.
*/
public fun ShortArray.asSequence(): Sequence<Short> {
if (isEmpty()) return emptySequence()
return object : Sequence<Short> {
override fun iterator(): Iterator<Short> {
return this@asSequence.iterator()
@@ -142,6 +151,7 @@ public fun <T> Sequence<T>.asSequence(): Sequence<T> {
* Returns a sequence from the given collection.
*/
public fun String.asSequence(): Sequence<Char> {
if (isEmpty()) return emptySequence()
return object : Sequence<Char> {
override fun iterator(): Iterator<Char> {
return this@asSequence.iterator()