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Paper/patches/api/0287-ItemStack-editMeta.patch

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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Riley Park <rileysebastianpark@gmail.com>
2021-06-11 14:02:28 +02:00
Date: Sun, 23 May 2021 05:04:28 -0700
Subject: [PATCH] ItemStack#editMeta
diff --git a/src/main/java/org/bukkit/inventory/ItemStack.java b/src/main/java/org/bukkit/inventory/ItemStack.java
2023-04-04 11:47:16 +02:00
index 2d945516ec65ffe103479aea218b3002cc572dc1..f9faef1b73b5027a3d22e76a0b33b7c952f3ae08 100644
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--- a/src/main/java/org/bukkit/inventory/ItemStack.java
+++ b/src/main/java/org/bukkit/inventory/ItemStack.java
@@ -547,6 +547,50 @@ public class ItemStack implements Cloneable, ConfigurationSerializable, Translat
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return result.ensureServerConversions(); // Paper
}
+ // Paper start
+ /**
+ * Edits the {@link ItemMeta} of this stack.
+ * <p>
+ * The {@link java.util.function.Consumer} must only interact
+ * with this stack's {@link ItemMeta} through the provided {@link ItemMeta} instance.
+ * Calling this method or any other meta-related method of the {@link ItemStack} class
+ * (such as {@link #getItemMeta()}, {@link #addItemFlags(ItemFlag...)}, {@link #lore()}, etc.)
+ * from inside the consumer is disallowed and will produce undefined results or exceptions.
+ * </p>
+ *
+ * @param consumer the meta consumer
+ * @return {@code true} if the edit was successful, {@code false} otherwise
+ */
+ public boolean editMeta(final @NotNull java.util.function.Consumer<? super ItemMeta> consumer) {
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+ return editMeta(ItemMeta.class, consumer);
+ }
+
+ /**
+ * Edits the {@link ItemMeta} of this stack if the meta is of the specified type.
+ * <p>
+ * The {@link java.util.function.Consumer} must only interact
+ * with this stack's {@link ItemMeta} through the provided {@link ItemMeta} instance.
+ * Calling this method or any other meta-related method of the {@link ItemStack} class
+ * (such as {@link #getItemMeta()}, {@link #addItemFlags(ItemFlag...)}, {@link #lore()}, etc.)
+ * from inside the consumer is disallowed and will produce undefined results or exceptions.
+ * </p>
+ *
+ * @param metaClass the type of meta to edit
+ * @param consumer the meta consumer
+ * @param <M> the meta type
+ * @return {@code true} if the edit was successful, {@code false} otherwise
+ */
+ public <M extends ItemMeta> boolean editMeta(final @NotNull Class<M> metaClass, final @NotNull java.util.function.Consumer<@NotNull ? super M> consumer) {
+ final @Nullable ItemMeta meta = this.getItemMeta();
+ if (metaClass.isInstance(meta)) {
+ consumer.accept((M) meta);
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+ this.setItemMeta(meta);
+ return true;
+ }
+ return false;
+ }
+ // Paper end
+
/**
* Get a copy of this ItemStack's {@link ItemMeta}.
*