Fix MetaValueSelector NPE

api/src/main/java/net/luckperms/api/cacheddata/Result.java

@@ -0,0 +1,61 @@
+/*
+ * This file is part of LuckPerms, licensed under the MIT License.
+ *
+ *  Copyright (c) lucko (Luck) <luck@lucko.me>
+ *  Copyright (c) contributors
+ *
+ *  Permission is hereby granted, free of charge, to any person obtaining a copy
+ *  of this software and associated documentation files (the "Software"), to deal
+ *  in the Software without restriction, including without limitation the rights
+ *  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ *  copies of the Software, and to permit persons to whom the Software is
+ *  furnished to do so, subject to the following conditions:
+ *
+ *  The above copyright notice and this permission notice shall be included in all
+ *  copies or substantial portions of the Software.
+ *
+ *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ *  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ *  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ *  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ *  SOFTWARE.
+ */
+
+package net.luckperms.api.cacheddata;
+
+import net.luckperms.api.node.Node;
+
+import org.checkerframework.checker.nullness.qual.Nullable;
+
+/**
+ * Represents the result of a cached data lookup
+ *
+ * @param <T> the result type
+ * @since 5.4
+ */
+public interface Result<T, N extends Node> {
+
+    /**
+     * Gets the underlying result.
+     *
+     * @return the underlying result
+     */
+    T result();
+
+    /**
+     * Gets the node that caused the result.
+     *
+     * @return the causing node
+     */
+    @Nullable N node();
+
+    /**
+     * Gets the result that this result overrides, if applicable.
+     *
+     * @return the overridden result
+     */
+    @Nullable Result<T, N> overriddenResult();
+
+}

api/src/main/java/net/luckperms/api/query/meta/MetaValueSelector.java

@@ -25,6 +25,7 @@
 
 package net.luckperms.api.query.meta;
 
+import net.luckperms.api.cacheddata.Result;
 import net.luckperms.api.node.types.MetaNode;
 import net.luckperms.api.query.OptionKey;
 
@@ -54,6 +55,6 @@ public interface MetaValueSelector {
      * @param values the values, in the order in which they were accumulated.
      * @return the selected value
      */
-    @NonNull MetaNode selectValue(@NonNull String key, @NonNull List<MetaNode> values);
+    @NonNull Result<String, MetaNode> selectValue(@NonNull String key, @NonNull List<? extends Result<String, MetaNode>> values);
 
 }