From 80deddc6b581421556370b31aec51d1ae902fa14 Mon Sep 17 00:00:00 2001
From: =?utf8?q?David=20=E2=80=98Bombe=E2=80=99=20Roden?=
 <bombe@pterodactylus.net>
Date: Tue, 7 Apr 2020 10:40:07 +0200
Subject: [PATCH] =?utf8?q?=F0=9F=8E=A8=20Replace=20default=20option=20with?=
 =?utf8?q?=20Kotlin=20version?=
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---
 .../pterodactylus/sone/utils/DefaultOption.java    | 83 ----------------------
 .../net/pterodactylus/sone/utils/DefaultOption.kt  | 30 ++++++++
 .../pterodactylus/sone/utils/DefaultOptionTest.kt  |  3 +-
 3 files changed, 31 insertions(+), 85 deletions(-)
 delete mode 100644 src/main/java/net/pterodactylus/sone/utils/DefaultOption.java
 create mode 100644 src/main/kotlin/net/pterodactylus/sone/utils/DefaultOption.kt

diff --git a/src/main/java/net/pterodactylus/sone/utils/DefaultOption.java b/src/main/java/net/pterodactylus/sone/utils/DefaultOption.java
deleted file mode 100644
index b46c58e..0000000
--- a/src/main/java/net/pterodactylus/sone/utils/DefaultOption.java
+++ /dev/null
@@ -1,83 +0,0 @@
-package net.pterodactylus.sone.utils;
-
-import java.util.function.Predicate;
-
-/**
- * Basic implementation of an {@link Option}.
- *
- * @param <T>
- *            The type of the option
- */
-public class DefaultOption<T> implements Option<T> {
-
-	/** The default value. */
-	private final T defaultValue;
-
-	/** The current value. */
-	private volatile T value;
-
-	/** The validator. */
-	private Predicate<T> validator;
-
-	/**
-	 * Creates a new default option.
-	 *
-	 * @param defaultValue
-	 *            The default value of the option
-	 */
-	public DefaultOption(T defaultValue) {
-		this(defaultValue, null);
-	}
-
-	/**
-	 * Creates a new default option.
-	 *
-	 * @param defaultValue
-	 *            The default value of the option
-	 * @param validator
-	 *            The validator for value validation (may be {@code null})
-	 */
-	public DefaultOption(T defaultValue, Predicate<T> validator) {
-		this.defaultValue = defaultValue;
-		this.validator = validator;
-	}
-
-	/**
-	 * {@inheritDoc}
-	 */
-	@Override
-	public T get() {
-		return (value != null) ? value : defaultValue;
-	}
-
-	/**
-	 * Returns the real value of the option. This will also return an unset
-	 * value (usually {@code null})!
-	 *
-	 * @return The real value of the option
-	 */
-	@Override
-	public T getReal() {
-		return value;
-	}
-
-	/**
-	 * {@inheritDoc}
-	 */
-	@Override
-	public boolean validate(T value) {
-		return (validator == null) || (value == null) || validator.test(value);
-	}
-
-	/**
-	 * {@inheritDoc}
-	 */
-	@Override
-	public void set(T value) {
-		if ((value != null) && (validator != null) && (!validator.test(value))) {
-			throw new IllegalArgumentException("New Value (" + value + ") could not be validated.");
-		}
-		this.value = value;
-	}
-
-}
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..5f75e12
--- /dev/null
+++ b/src/main/kotlin/net/pterodactylus/sone/utils/DefaultOption.kt
@@ -0,0 +1,30 @@
+package net.pterodactylus.sone.utils
+
+import java.util.function.Predicate
+
+/**
+ * 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
+	}
+
+}
diff --git a/src/test/kotlin/net/pterodactylus/sone/utils/DefaultOptionTest.kt b/src/test/kotlin/net/pterodactylus/sone/utils/DefaultOptionTest.kt
index f7f4a49..e445b39 100644
--- a/src/test/kotlin/net/pterodactylus/sone/utils/DefaultOptionTest.kt
+++ b/src/test/kotlin/net/pterodactylus/sone/utils/DefaultOptionTest.kt
@@ -1,6 +1,5 @@
 package net.pterodactylus.sone.utils
 
-import com.google.common.base.Predicate
 import org.hamcrest.MatcherAssert.assertThat
 import org.hamcrest.Matchers.equalTo
 import org.hamcrest.Matchers.nullValue
@@ -14,7 +13,7 @@ class DefaultOptionTest {
 
 	private val defaultValue = Any()
 	private val acceptedValue = Any()
-	private val matchesAcceptedValue = Predicate<Any?> { it == acceptedValue }
+	private val matchesAcceptedValue = { it: Any -> it == acceptedValue }
 
 	@Test
 	fun `default option returns default value when unset`() {
-- 
2.7.4