1 files changed, 52 insertions, 0 deletions
diff --git a/src/main/java/io/github/moulberry/notenoughupdates/util/IdentityCharacteristics.java b/src/main/java/io/github/moulberry/notenoughupdates/util/IdentityCharacteristics.java
new file mode 100644
index 00000000..76607ea0
--- /dev/null
+++ b/src/main/java/io/github/moulberry/notenoughupdates/util/IdentityCharacteristics.java
@@ -0,0 +1,52 @@
+/*
+ * Copyright (C) 2023 NotEnoughUpdates contributors
+ *
+ * This file is part of NotEnoughUpdates.
+ *
+ * NotEnoughUpdates is free software: you can redistribute it
+ * and/or modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation, either
+ * version 3 of the License, or (at your option) any later version.
+ *
+ * NotEnoughUpdates is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with NotEnoughUpdates. If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package io.github.moulberry.notenoughupdates.util;
+
+/**
+ * Wrapper around a {@link T} that implements hashing and equality according to object identity instead of the objects
+ * default equals implementation.
+ */
+public final class IdentityCharacteristics<T> {
+	private final T object;
+
+	public IdentityCharacteristics(T object) {
+		this.object = object;
+	}
+
+	public static <T> IdentityCharacteristics<T> of(T object) {
+		return new IdentityCharacteristics<>(object);
+	}
+
+	public T getObject() {
+		return object;
+	}
+
+	@Override
+	public int hashCode() {
+		return System.identityHashCode(object);
+	}
+
+	@SuppressWarnings("EqualsWhichDoesntCheckParameterClass")
+	@Override
+	public boolean equals(Object obj) {
+		return obj == object;
+	}
+
+}