org.jetbrains.kotlinx.jupyter.util.compareUtil.kt Maven / Gradle / Ivy

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package org.jetbrains.kotlinx.jupyter.util

import kotlin.reflect.KProperty1

fun > compareNullable(s1: T?, s2: T?): Int {
    return if (s1 == null) {
        if (s2 == null) 0
        else -1
    } else {
        if (s2 == null) 1
        else s1.compareTo(s2)
    }
}

fun , P : Comparable> T.compareProperty(other: T, property: KProperty1): Int {
    val thisP = property.get(this)
    val otherP = property.get(other)
    return compareNullable(thisP, otherP)
}

fun , P : Comparable> T.compareByProperties(other: T, vararg properties: KProperty1): Int {
    for (prop in properties) {
        val comparison = compareProperty(other, prop)
        if (comparison != 0) return comparison
    }
    return 0
}