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96d5e6ca48
Currently includes generated key holder classes for types used in the Registry Modification API
93 lines
2.9 KiB
Diff
93 lines
2.9 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Jake Potrebic <jake.m.potrebic@gmail.com>
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Date: Wed, 2 Mar 2022 13:36:21 -0800
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Subject: [PATCH] Add PaperRegistry
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diff --git a/src/main/java/io/papermc/paper/registry/Reference.java b/src/main/java/io/papermc/paper/registry/Reference.java
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new file mode 100644
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index 0000000000000000000000000000000000000000..d880810cbf05bc45051fe29515054211572e33b4
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--- /dev/null
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+++ b/src/main/java/io/papermc/paper/registry/Reference.java
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@@ -0,0 +1,43 @@
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+package io.papermc.paper.registry;
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+
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+import org.bukkit.Keyed;
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+import org.bukkit.NamespacedKey;
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+import org.bukkit.Registry;
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+import org.jetbrains.annotations.NotNull;
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+import org.jetbrains.annotations.Nullable;
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+
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+/**
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+ * Represents a reference to a server-backed registry value that may
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+ * change.
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+ *
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+ * @param <T> type of the value
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+ */
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+public interface Reference<T extends Keyed> extends Keyed {
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+
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+ /**
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+ * Gets the value from the registry with the key.
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+ *
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+ * @return the value
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+ * @throws java.util.NoSuchElementException if there is no value with this key
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+ */
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+ @NotNull T value();
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+
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+ /**
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+ * Gets the value from the registry with the key.
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+ *
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+ * @return the value or null if it doesn't exist
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+ */
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+ @Nullable T valueOrNull();
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+
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+ /**
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+ * Creates a reference to a registered value.
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+ *
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+ * @param registry the registry the value is located in
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+ * @param key the key to the value
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+ * @param <T> the type of the value
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+ * @return a reference
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+ */
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+ static <T extends Keyed> @NotNull Reference<T> create(@NotNull Registry<T> registry, @NotNull NamespacedKey key) {
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+ return new ReferenceImpl<>(registry, key);
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+ }
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+}
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diff --git a/src/main/java/io/papermc/paper/registry/ReferenceImpl.java b/src/main/java/io/papermc/paper/registry/ReferenceImpl.java
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new file mode 100644
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index 0000000000000000000000000000000000000000..f29e76a6b66ddfec12ddf8db6dcb2df6083b5982
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--- /dev/null
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+++ b/src/main/java/io/papermc/paper/registry/ReferenceImpl.java
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@@ -0,0 +1,31 @@
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+package io.papermc.paper.registry;
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+
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+import org.bukkit.Keyed;
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+import org.bukkit.NamespacedKey;
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+import org.bukkit.Registry;
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+import org.jetbrains.annotations.NotNull;
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+import org.jetbrains.annotations.Nullable;
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+
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+import java.util.NoSuchElementException;
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+
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+record ReferenceImpl<T extends Keyed>(@NotNull Registry<T> registry, @NotNull NamespacedKey key) implements Reference<T> {
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+
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+ @Override
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+ public @NotNull T value() {
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+ final T value = this.registry.get(this.key);
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+ if (value == null) {
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+ throw new NoSuchElementException("No such value with key " + this.key);
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+ }
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+ return value;
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+ }
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+
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+ @Override
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+ public @Nullable T valueOrNull() {
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+ return this.registry.get(this.key);
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+ }
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+
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+ @Override
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+ public @NotNull NamespacedKey getKey() {
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+ return this.key;
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+ }
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+}
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