jetbrains.exodus.kotlin.Kodus.kt Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of sonarlint-core Show documentation

Common library used by some SonarLint flavors

There is a newer version: 10.5.0.78949

/**
 * Copyright 2010 - 2022 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
 *
 * https://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 jetbrains.exodus.kotlin

import kotlin.reflect.KProperty

val  T?.notNull: T get() = this ?: throw IllegalStateException()

fun  T?.notNull(msg: () -> Any?) = this ?: throw IllegalStateException(msg().toString())

inline fun  T.synchronized(block: T.() -> R): R = synchronized(this) {
    return block()
}

class DefaultDelegate(private val getDefault: () -> T) {

    private var value: T? = null

    operator fun getValue(thisRef: Any?, property: KProperty<*>): T {
        return value ?: getDefault().also { value = it }
    }

    operator fun setValue(thisRef: Any?, property: KProperty<*>, value: T) {
        this.value = value
    }
}