.kotlin.kotlin-compiler.1.3.11.source-code.transform.kt Maven / Gradle / Ivy
/*
* Copyright 2010-2016 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.ir.util
import org.jetbrains.kotlin.ir.IrElement
inline fun MutableList.transform(transformation: (T) -> IrElement) {
forEachIndexed { i, item ->
set(i, transformation(item) as T)
}
}
/**
* Transforms a mutable list in place.
* Each element `it` is replaced with a result of `transformation(it)`,
* `null` means "keep existing element" (to avoid creating excessive singleton lists).
*/
inline fun MutableList.transformFlat(transformation: (T) -> List?) {
var i = 0
while (i < size) {
val item = get(i)
val transformed = transformation(item)
if (transformed == null) {
i++
continue
}
addAll(i, transformed)
i += transformed.size
removeAt(i)
}
}