com.github.stormbit.vksdk.vkapi.Bitmask.kt Maven / Gradle / Ivy

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The Kotlin library for working with VK api

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package com.github.stormbit.vksdk.vkapi

import kotlin.properties.ReadWriteProperty
import kotlin.reflect.KProperty

open class Bitmask(open var mask: Int = 0) {
    fun getValue(bit: Int): Boolean = mask and bit != 0
    fun setValue(bit: Int) { mask = mask or bit }
    fun clearValue(bit: Int) { mask = mask xor bit }

    fun bitmask(bit: Int): BitmaskDelegate = BitmaskDelegate(bit)

    class BitmaskDelegate(private val bit: Int) : ReadWriteProperty {
        override fun getValue(thisRef: Bitmask, property: KProperty<*>) = thisRef.getValue(bit)

        override fun setValue(thisRef: Bitmask, property: KProperty<*>, value: Boolean) =
            if (value) thisRef.setValue(bit) else thisRef.clearValue(bit)
    }
}