X-Git-Url: https://git.pterodactylus.net/?p=Sone.git;a=blobdiff_plain;f=src%2Fmain%2Fkotlin%2Fnet%2Fpterodactylus%2Fsone%2Futils%2FDefaultOption.kt;fp=src%2Fmain%2Fkotlin%2Fnet%2Fpterodactylus%2Fsone%2Futils%2FDefaultOption.kt;h=fd4215f19da2c7daa5bc064271d5ba08cf04322e;hp=0000000000000000000000000000000000000000;hb=5c5bee980f9cab5792e34d1c9840f73b8b191830;hpb=faf66247a34f64946990a985d2ea3003465969cb

diff --git a/src/main/kotlin/net/pterodactylus/sone/utils/DefaultOption.kt b/src/main/kotlin/net/pterodactylus/sone/utils/DefaultOption.kt
new file mode 100644
index 0000000..fd4215f
--- /dev/null
+++ b/src/main/kotlin/net/pterodactylus/sone/utils/DefaultOption.kt
@@ -0,0 +1,28 @@
+package net.pterodactylus.sone.utils
+
+/**
+ * Basic implementation of an [Option].
+ *
+ * @param <T> The type of the option
+ */
+class DefaultOption<T> @JvmOverloads constructor(
+		private val defaultValue: T,
+		private val validator: ((T) -> Boolean)? = null
+) : Option<T> {
+
+	@Volatile
+	private var value: T? = null
+
+	override fun get() = value ?: defaultValue
+
+	override fun getReal(): T? = value
+
+	override fun validate(value: T?): Boolean =
+			value == null || validator?.invoke(value) ?: true
+
+	override fun set(value: T?) {
+		require(validate(value)) { "New Value ($value) could not be validated." }
+		this.value = value
+	}
+
+}