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Diffstat (limited to 'app/src/main/kotlin/com/pitchedapps/frost/utils/LazyResettable.kt')
| -rw-r--r-- | app/src/main/kotlin/com/pitchedapps/frost/utils/LazyResettable.kt | 51 |
1 files changed, 0 insertions, 51 deletions
diff --git a/app/src/main/kotlin/com/pitchedapps/frost/utils/LazyResettable.kt b/app/src/main/kotlin/com/pitchedapps/frost/utils/LazyResettable.kt deleted file mode 100644 index c8365f5c..00000000 --- a/app/src/main/kotlin/com/pitchedapps/frost/utils/LazyResettable.kt +++ /dev/null @@ -1,51 +0,0 @@ -package com.pitchedapps.frost.utils - -import java.io.Serializable -import kotlin.reflect.KProperty - -/** - * Created by Allan Wang on 2017-05-30. - * - * Lazy delegate that can be invalidated if needed - * https://stackoverflow.com/a/37294840/4407321 - */ -private object UNINITIALIZED - -fun <T : Any> lazyResettable(initializer: () -> T): LazyResettable<T> = LazyResettable<T>(initializer) - -class LazyResettable<T : Any>(private val initializer: () -> T, lock: Any? = null) : Lazy<T>, Serializable { - @Volatile private var _value: Any = UNINITIALIZED - private val lock = lock ?: this - - fun invalidate() { - _value = UNINITIALIZED - } - - override val value: T - get() { - val _v1 = _value - if (_v1 !== UNINITIALIZED) - @Suppress("UNCHECKED_CAST") - return _v1 as T - - return synchronized(lock) { - val _v2 = _value - if (_v2 !== UNINITIALIZED) { - @Suppress("UNCHECKED_CAST") - _v2 as T - } else { - val typedValue = initializer() - _value = typedValue - typedValue - } - } - } - - override fun isInitialized(): Boolean = _value !== UNINITIALIZED - - override fun toString(): String = if (isInitialized()) value.toString() else "Lazy value not initialized yet." - - operator fun setValue(any: Any, property: KProperty<*>, t: T) { - _value = t - } -}
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