org.jetbrains.kotlin.js.inline.util.collectionUtils.kt Maven / Gradle / Ivy
/*
* Copyright 2010-2015 JetBrains s.r.o.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.jetbrains.kotlin.js.inline.util
import java.util.Collections
import java.util.IdentityHashMap
fun IdentitySet(): MutableSet {
return Collections.newSetFromMap(IdentityHashMap())
}
fun Collection.toIdentitySet(): MutableSet {
val result = IdentitySet()
for (element in this) {
result.add(element)
}
return result
}
fun Sequence.toIdentitySet(): MutableSet {
val result = IdentitySet()
for (element in this) {
result.add(element)
}
return result
}
fun Iterable.zipWithDefault(
other: Iterable,
defaultT: T
): List> {
val itT = iterator()
val itR = other.iterator()
val result = arrayListOf>()
while (itT.hasNext() && itR.hasNext()) {
result.add(itT.next() to itR.next())
}
assert(!itT.hasNext()) { "First collection is bigger than second" }
while (itR.hasNext()) {
result.add(defaultT to itR.next())
}
return result
}