commonMain.com.github.mustafaozhan.scopemob.WhetherScope.kt Maven / Gradle / Ivy

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Set of useful scope and higher-order functions

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/*
 Copyright (c) 2020 Mustafa Ozhan. All rights reserved.
 */
package com.github.mustafaozhan.scopemob

inline fun  T.whether(
    method: T.(condition: T) -> Boolean
): T? =
    if (this != null && method(this)) {
        this
    } else {
        null
    }

inline fun  T.whether(
    vararg method: T.(condition: T) -> Boolean
): T? =
    if (this != null) {
        if (method.all { it(this) }) {
            this
        } else {
            null
        }
    } else {
        null
    }

inline fun  T.whetherNot(
    method: T.(condition: T) -> Boolean
): T? =
    if (this != null && !method(this)) {
        this
    } else {
        null
    }

inline fun  T.whetherNot(
    vararg method: T.(condition: T) -> Boolean
): T? =
    if (this != null) {
        if (!method.all { it(this) }) {
            this
        } else {
            null
        }
    } else {
        null
    }