Paper/patches/api/0054-Fix-upstream-javadocs.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Zach Brown <zach.brown@destroystokyo.com>
Date: Sat, 10 Jun 2017 16:59:40 -0500
Subject: [PATCH] Fix upstream javadocs

Upstream still refuses to use Java 8 with the API so they are likely unaware these are even issues.

diff --git a/src/main/java/org/bukkit/Bukkit.java b/src/main/java/org/bukkit/Bukkit.java
index aea30cacbf43c4c6d30b0c9e0d59fcd2db444ad8..e25a6532deca1df59eff2ab59697b851535ee952 100644
--- a/src/main/java/org/bukkit/Bukkit.java
+++ b/src/main/java/org/bukkit/Bukkit.java
@@ -1331,6 +1331,8 @@ public final class Bukkit {
 
     /**
      * Gets every player that has ever played on this server.
+     * <p>
+     * <b>This method can be expensive as it loads all the player data files from the disk.</b>
      *
      * @return an array containing all previous players
      */
diff --git a/src/main/java/org/bukkit/Server.java b/src/main/java/org/bukkit/Server.java
index 5e4e6e83ac6b52493cb285561425bed53ffff2b6..2bfbb0ce71c8c5f8bd9bbd908488831b94ce583f 100644
--- a/src/main/java/org/bukkit/Server.java
+++ b/src/main/java/org/bukkit/Server.java
@@ -509,13 +509,10 @@ public interface Server extends PluginMessageRecipient, net.kyori.adventure.audi
      * </ul>
      * <p>
      * <b>Note:</b> If set to 0, {@link SpawnCategory} mobs spawning will be disabled.
-     * <p>
-     * Minecraft default: 1.
-     * <br>
-     * <b>Note: </b> the {@link SpawnCategory#MISC} are not consider.
      *
      * @param spawnCategory the category of spawn
      * @return the default ticks per {@link SpawnCategory} mobs spawn value
+     * @throws IllegalArgumentException if the category is {@link SpawnCategory#MISC}
      */
     public int getTicksPerSpawns(@NotNull SpawnCategory spawnCategory);
 
@@ -1126,6 +1123,8 @@ public interface Server extends PluginMessageRecipient, net.kyori.adventure.audi
 
     /**
      * Gets every player that has ever played on this server.
+     * <p>
+     * <b>This method can be expensive as it loads all the player data files from the disk.</b>
      *
      * @return an array containing all previous players
      */
diff --git a/src/main/java/org/bukkit/entity/ArmorStand.java b/src/main/java/org/bukkit/entity/ArmorStand.java
index 91fc11dda99de506be83d40df8929bf7cd8e8d85..7dc631ebd009f5f5c3ac1699c3f3515c47609c05 100644
--- a/src/main/java/org/bukkit/entity/ArmorStand.java
+++ b/src/main/java/org/bukkit/entity/ArmorStand.java
@@ -360,5 +360,8 @@ public interface ArmorStand extends LivingEntity {
      * @param move {@code true} if this armour stand can move, {@code false} otherwise
      */
     void setCanMove(boolean move);
+
+    @Override
+    org.bukkit.inventory.@NotNull EntityEquipment getEquipment();
     // Paper end
 }
diff --git a/src/main/java/org/bukkit/entity/HumanEntity.java b/src/main/java/org/bukkit/entity/HumanEntity.java
index 2cf43eac30187a43a01c81b3021b2cfec0d4ba8a..864941be2d07de08f63e740ad2becf1dc5790433 100644
--- a/src/main/java/org/bukkit/entity/HumanEntity.java
+++ b/src/main/java/org/bukkit/entity/HumanEntity.java
@@ -21,6 +21,11 @@ import org.jetbrains.annotations.Nullable;
  */
 public interface HumanEntity extends LivingEntity, AnimalTamer, InventoryHolder {
 
+    // Paper start
+    @Override
+    org.bukkit.inventory.@NotNull EntityEquipment getEquipment();
+    // Paper end
+
     /**
      * Returns the name of this player
      *
diff --git a/src/main/java/org/bukkit/entity/Mob.java b/src/main/java/org/bukkit/entity/Mob.java
index be9334a8b5fba9181ad63c211697e798be63da25..0514a141cb93a650be38c63d4336d46e4304f4b6 100644
--- a/src/main/java/org/bukkit/entity/Mob.java
+++ b/src/main/java/org/bukkit/entity/Mob.java
@@ -8,6 +8,10 @@ import org.jetbrains.annotations.Nullable;
  */
 public interface Mob extends LivingEntity, Lootable {
 
+    // Paper start
+    @Override
+    org.bukkit.inventory.@org.jetbrains.annotations.NotNull EntityEquipment getEquipment();
+    // Paper end
     /**
      * Instructs this Mob to set the specified LivingEntity as its target.
      * <p>
diff --git a/src/main/java/org/bukkit/entity/Player.java b/src/main/java/org/bukkit/entity/Player.java
index 6e6ec4095ac9d6c17b1ee657133f6521ead35226..cf4beb02cce7b87facd5465291286f1b5e97db59 100644
--- a/src/main/java/org/bukkit/entity/Player.java
+++ b/src/main/java/org/bukkit/entity/Player.java
@@ -303,15 +303,15 @@ public interface Player extends HumanEntity, Conversable, OfflinePlayer, PluginM
 
     /**
      * Saves the players current location, health, inventory, motion, and
-     * other information into the username.dat file, in the world/player
-     * folder
+     * other information into the &lt;uuid&gt;.dat file, in the
+     * &lt;level-name&gt;/playerdata/ folder.
      */
     public void saveData();
 
     /**
      * Loads the players current location, health, inventory, motion, and
-     * other information from the username.dat file, in the world/player
-     * folder.
+     * other information from the &lt;uuid&gt;.dat file, in the
+     * &lt;level-name&gt;/playerdata/ folder.
      * <p>
      * Note: This will overwrite the players current inventory, health,
      * motion, etc, with the state from the saved dat file.
@@ -767,7 +767,7 @@ public interface Player extends HumanEntity, Conversable, OfflinePlayer, PluginM
      *
      * Use supplied alternative character to the section symbol to represent legacy color codes.
      *
-     * @param alternateChar Alternate symbol such as '&'
+     * @param alternateChar Alternate symbol such as '&amp;'
      * @param message The message to send
      * @deprecated use {@link #sendActionBar(Component)}
      */
diff --git a/src/main/java/org/bukkit/entity/Slime.java b/src/main/java/org/bukkit/entity/Slime.java
index 1119e26e270bb45f517955b19d95a9ec3d113634..4631647c64c89ffdde2d9b63bdab974acfe6cb3d 100644
--- a/src/main/java/org/bukkit/entity/Slime.java
+++ b/src/main/java/org/bukkit/entity/Slime.java
@@ -11,6 +11,16 @@ public interface Slime extends Mob {
     public int getSize();
 
     /**
+     * Setting the size of the slime (regardless of previous size)
+     * will set the following attributes:
+     * <ul>
+     *     <li>{@link org.bukkit.attribute.Attribute#GENERIC_MAX_HEALTH}</li>
+     *     <li>{@link org.bukkit.attribute.Attribute#GENERIC_MOVEMENT_SPEED}</li>
+     *     <li>{@link org.bukkit.attribute.Attribute#GENERIC_ATTACK_DAMAGE}</li>
+     * </ul>
+     * to their per-size defaults and heal the
+     * slime to its max health (assuming it's alive).
+     *
      * @param sz The new size of the slime.
      */
     public void setSize(int sz);
diff --git a/src/main/java/org/bukkit/inventory/EntityEquipment.java b/src/main/java/org/bukkit/inventory/EntityEquipment.java
index d5b50a4a954fed35d37f03f1a277cc173ca106df..a91fa5386afd7a1137adb921ad5adb798604772f 100644
--- a/src/main/java/org/bukkit/inventory/EntityEquipment.java
+++ b/src/main/java/org/bukkit/inventory/EntityEquipment.java
@@ -37,9 +37,23 @@ public interface EntityEquipment {
     public ItemStack getItem(@NotNull EquipmentSlot slot);
 
     /**
-     * Gets a copy of the item the entity is currently holding
+     * Gets the item the entity is currently holding
      * in their main hand.
      *
+     * <p>
+     * This returns a copy if this equipment instance is from a non-player,
+     * or it's an empty stack (has AIR as its type).
+     * For non-empty stacks from players, this returns a live mirror. You can check if this
+     * will return a mirror with
+     * <pre>{@code
+     * EntityEquipment equipment = entity.getEquipment();
+     * if (equipment instanceof PlayerInventory) {
+     *     equipment.getItemInMainHand(); // will return a mirror
+     * } else {
+     *     equipment.getItemInMainHand(); // will return a copy
+     * }
+     * }</pre>
+     *
      * @return the currently held item
      */
     @NotNull
@@ -61,9 +75,23 @@ public interface EntityEquipment {
     void setItemInMainHand(@Nullable ItemStack item, boolean silent);
 
     /**
-     * Gets a copy of the item the entity is currently holding
+     * Gets the item the entity is currently holding
      * in their off hand.
      *
+     * <p>
+     * This returns a copy if this equipment instance is from a non-player,
+     * or it's an empty stack (has AIR as its type).
+     * For non-empty stacks from players, this returns a live mirror. You can check if this
+     * will return a mirror with
+     * <pre>{@code
+     * EntityEquipment equipment = entity.getEquipment();
+     * if (equipment instanceof PlayerInventory) {
+     *     equipment.getItemInOffHand(); // will return a mirror
+     * } else {
+     *     equipment.getItemInOffHand(); // will return a copy
+     * }
+     * }</pre>
+     *
      * @return the currently held item
      */
     @NotNull
@@ -85,7 +113,21 @@ public interface EntityEquipment {
     void setItemInOffHand(@Nullable ItemStack item, boolean silent);
 
     /**
-     * Gets a copy of the item the entity is currently holding
+     * Gets the item the entity is currently holding
+     *
+     * <p>
+     * This returns a copy if this equipment instance is from a non-player,
+     * or it's an empty stack (has AIR as its type).
+     * For non-empty stacks from players, this returns a live mirror. You can check if this
+     * will return a mirror with
+     * <pre>{@code
+     * EntityEquipment equipment = entity.getEquipment();
+     * if (equipment instanceof PlayerInventory) {
+     *     equipment.getItemInHand(); // will return a mirror
+     * } else {
+     *     equipment.getItemInHand(); // will return a copy
+     * }
+     * }</pre>
      *
      * @return the currently held item
      * @see #getItemInMainHand()
@@ -110,11 +152,24 @@ public interface EntityEquipment {
     void setItemInHand(@Nullable ItemStack stack);
 
     /**
-     * Gets a copy of the helmet currently being worn by the entity
+     * Gets the helmet currently being worn by the entity
+     *
+     * <p>
+     * This returns a copy if this equipment instance is from a non-player.
+     * For stacks from players, this returns a live mirror (or null). You can check if this
+     * will return a mirror with
+     * <pre>{@code
+     * EntityEquipment equipment = entity.getEquipment();
+     * if (equipment instanceof PlayerInventory) {
+     *     equipment.getItemInHand(); // will return a mirror
+     * } else {
+     *     equipment.getItemInHand(); // will return a copy
+     * }
+     * }</pre>
      *
      * @return The helmet being worn
      */
-    @Nullable
+    @org.bukkit.UndefinedNullability("not null for entities, nullable for players") // Paper
     ItemStack getHelmet();
 
     /**
@@ -133,11 +188,24 @@ public interface EntityEquipment {
     void setHelmet(@Nullable ItemStack helmet, boolean silent);
 
     /**
-     * Gets a copy of the chest plate currently being worn by the entity
+     * Gets the chest plate currently being worn by the entity
+     *
+     * <p>
+     * This returns a copy if this equipment instance is from a non-player.
+     * For stacks from players, this returns a live mirror (or null). You can check if this
+     * will return a mirror with
+     * <pre>{@code
+     * EntityEquipment equipment = entity.getEquipment();
+     * if (equipment instanceof PlayerInventory) {
+     *     equipment.getChestplate(); // will return a mirror
+     * } else {
+     *     equipment.getChestplate(); // will return a copy
+     * }
+     * }</pre>
      *
      * @return The chest plate being worn
      */
-    @Nullable
+    @org.bukkit.UndefinedNullability("not null for entities, nullable for players") // Paper
     ItemStack getChestplate();
 
     /**
@@ -156,11 +224,24 @@ public interface EntityEquipment {
     void setChestplate(@Nullable ItemStack chestplate, boolean silent);
 
     /**
-     * Gets a copy of the leggings currently being worn by the entity
+     * Gets the leggings currently being worn by the entity
+     *
+     * <p>
+     * This returns a copy if this equipment instance is from a non-player.
+     * For stacks from players, this returns a live mirror (or null). You can check if this
+     * will return a mirror with
+     * <pre>{@code
+     * EntityEquipment equipment = entity.getEquipment();
+     * if (equipment instanceof PlayerInventory) {
+     *     equipment.getLeggings(); // will return a mirror
+     * } else {
+     *     equipment.getLeggings(); // will return a copy
+     * }
+     * }</pre>
      *
      * @return The leggings being worn
      */
-    @Nullable
+    @org.bukkit.UndefinedNullability("not null for entities, nullable for players") // Paper
     ItemStack getLeggings();
 
     /**
@@ -179,11 +260,24 @@ public interface EntityEquipment {
     void setLeggings(@Nullable ItemStack leggings, boolean silent);
 
     /**
-     * Gets a copy of the boots currently being worn by the entity
+     * Gets the boots currently being worn by the entity
+     *
+     * <p>
+     * This returns a copy if this equipment instance is from a non-player.
+     * For stacks from players, this returns a live mirror (or null). You can check if this
+     * will return a mirror with
+     * <pre>{@code
+     * EntityEquipment equipment = entity.getEquipment();
+     * if (equipment instanceof PlayerInventory) {
+     *     equipment.getBoots(); // will return a mirror
+     * } else {
+     *     equipment.getBoots(); // will return a copy
+     * }
+     * }</pre>
      *
      * @return The boots being worn
      */
-    @Nullable
+    @org.bukkit.UndefinedNullability("not null for entities, nullable for players") // Paper
     ItemStack getBoots();
 
     /**
@@ -202,12 +296,25 @@ public interface EntityEquipment {
     void setBoots(@Nullable ItemStack boots, boolean silent);
 
     /**
-     * Gets a copy of all worn armor
+     * Gets all worn armor
+     *
+     * <p>
+     * This returns a copy if this equipment instance is from a non-player,
+     * or it's an empty stack (has AIR as its type).
+     * For non-empty stacks from players, this returns a live mirror. You can check if this
+     * will return a mirror with
+     * <pre>{@code
+     * EntityEquipment equipment = entity.getEquipment();
+     * if (equipment instanceof PlayerInventory) {
+     *     equipment.getArmorContents(); // will return an array of mirror
+     * } else {
+     *     equipment.getArmorContents(); // will return an array of copies
+     * }
+     * }</pre>
      *
      * @return The array of worn armor. Individual items may be null.
      */
-    @NotNull
-    ItemStack[] getArmorContents();
+    @org.bukkit.UndefinedNullability("not null elements for entities, nullable elements for players") ItemStack @NotNull [] getArmorContents(); // Paper
 
     /**
      * Sets the entities armor to the provided array of ItemStacks
diff --git a/src/main/java/org/bukkit/inventory/PlayerInventory.java b/src/main/java/org/bukkit/inventory/PlayerInventory.java
index 62fbd7f6d8195bebcab7f704a0a485a1bbeca26c..5461f7fa75f5a065bb333b4a113640b5fe1e3825 100644
--- a/src/main/java/org/bukkit/inventory/PlayerInventory.java
+++ b/src/main/java/org/bukkit/inventory/PlayerInventory.java
@@ -158,7 +158,7 @@ public interface PlayerInventory extends Inventory {
     public void setBoots(@Nullable ItemStack boots);
 
     /**
-     * Gets a copy of the item the player is currently holding
+     * Gets the item the player is currently holding
      * in their main hand.
      *
      * @return the currently held item
@@ -174,7 +174,7 @@ public interface PlayerInventory extends Inventory {
     void setItemInMainHand(@Nullable ItemStack item);
 
     /**
-     * Gets a copy of the item the player is currently holding
+     * Gets the item the player is currently holding
      * in their off hand.
      *
      * @return the currently held item
@@ -190,7 +190,7 @@ public interface PlayerInventory extends Inventory {
     void setItemInOffHand(@Nullable ItemStack item);
 
     /**
-     * Gets a copy of the item the player is currently holding
+     * Gets the item the player is currently holding
      *
      * @return the currently held item
      * @see #getItemInMainHand()