mirror of https://github.com/Minestom/Minestom.git
651 lines
27 KiB
Java
651 lines
27 KiB
Java
package net.minestom.server.command;
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import it.unimi.dsi.fastutil.ints.IntArrayList;
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import it.unimi.dsi.fastutil.ints.IntList;
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import net.minestom.server.command.builder.Command;
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import net.minestom.server.command.builder.CommandDispatcher;
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import net.minestom.server.command.builder.CommandSyntax;
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import net.minestom.server.command.builder.arguments.*;
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import net.minestom.server.command.builder.arguments.minecraft.*;
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import net.minestom.server.command.builder.arguments.minecraft.registry.ArgumentEnchantment;
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import net.minestom.server.command.builder.arguments.minecraft.registry.ArgumentEntityType;
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import net.minestom.server.command.builder.arguments.minecraft.registry.ArgumentParticle;
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import net.minestom.server.command.builder.arguments.minecraft.registry.ArgumentPotionEffect;
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import net.minestom.server.command.builder.arguments.number.ArgumentDouble;
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import net.minestom.server.command.builder.arguments.number.ArgumentFloat;
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import net.minestom.server.command.builder.arguments.number.ArgumentInteger;
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import net.minestom.server.command.builder.arguments.number.ArgumentNumber;
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import net.minestom.server.command.builder.condition.CommandCondition;
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import net.minestom.server.entity.Player;
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import net.minestom.server.event.player.PlayerCommandEvent;
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import net.minestom.server.network.packet.server.play.DeclareCommandsPacket;
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import net.minestom.server.utils.ArrayUtils;
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import net.minestom.server.utils.callback.CommandCallback;
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import net.minestom.server.utils.validate.Check;
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import org.apache.commons.lang3.tuple.Pair;
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import org.jetbrains.annotations.NotNull;
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import org.jetbrains.annotations.Nullable;
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import java.util.*;
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import java.util.function.Consumer;
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/**
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* Manager used to register {@link Command} and {@link CommandProcessor}.
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* <p>
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* It is also possible to simulate a command using {@link #execute(CommandSender, String)}.
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*/
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public final class CommandManager {
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public static final String COMMAND_PREFIX = "/";
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private boolean running;
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private final ConsoleSender consoleSender = new ConsoleSender();
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private final CommandDispatcher dispatcher = new CommandDispatcher();
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private final Map<String, CommandProcessor> commandProcessorMap = new HashMap<>();
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private CommandCallback unknownCommandCallback;
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public CommandManager() {
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running = true;
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// Setup console thread
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Thread consoleThread = new Thread(() -> {
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final Scanner scanner = new Scanner(System.in);
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while (running) {
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if (scanner.hasNext()) {
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String command = scanner.nextLine();
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if (!command.startsWith(COMMAND_PREFIX))
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continue;
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command = command.replaceFirst(COMMAND_PREFIX, "");
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execute(consoleSender, command);
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}
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}
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}, "ConsoleCommand-Thread");
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consoleThread.setDaemon(true);
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consoleThread.start();
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}
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/**
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* Stops the console responsible for the console commands processing.
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* <p>
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* WARNING: it cannot be re-run later.
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*/
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public void stopConsoleThread() {
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running = false;
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}
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/**
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* Registers a {@link Command}.
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*
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* @param command the command to register
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*/
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public void register(@NotNull Command command) {
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this.dispatcher.register(command);
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}
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/**
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* Gets the {@link Command} registered by {@link #register(Command)}.
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*
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* @param commandName the command name
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* @return the command associated with the name, null if not any
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*/
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@Nullable
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public Command getCommand(@NotNull String commandName) {
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return dispatcher.findCommand(commandName);
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}
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/**
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* Registers a {@link CommandProcessor}.
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*
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* @param commandProcessor the command to register
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*/
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public void register(@NotNull CommandProcessor commandProcessor) {
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this.commandProcessorMap.put(commandProcessor.getCommandName().toLowerCase(), commandProcessor);
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// Register aliases
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final String[] aliases = commandProcessor.getAliases();
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if (aliases != null && aliases.length > 0) {
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for (String alias : aliases) {
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this.commandProcessorMap.put(alias.toLowerCase(), commandProcessor);
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}
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}
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}
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/**
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* Gets the {@link CommandProcessor} registered by {@link #register(CommandProcessor)}.
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*
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* @param commandName the command name
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* @return the command associated with the name, null if not any
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*/
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@Nullable
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public CommandProcessor getCommandProcessor(@NotNull String commandName) {
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return commandProcessorMap.get(commandName.toLowerCase());
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}
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/**
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* Executes a command for a {@link ConsoleSender}.
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*
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* @param sender the sender of the command
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* @param command the raw command string (without the command prefix)
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* @return true if the command hadn't been cancelled and has been successful
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*/
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public boolean execute(@NotNull CommandSender sender, @NotNull String command) {
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Check.notNull(sender, "Source cannot be null");
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Check.notNull(command, "Command string cannot be null");
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// Command event
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if (sender instanceof Player) {
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Player player = (Player) sender;
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PlayerCommandEvent playerCommandEvent = new PlayerCommandEvent(player, command);
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player.callEvent(PlayerCommandEvent.class, playerCommandEvent);
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if (playerCommandEvent.isCancelled())
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return false;
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command = playerCommandEvent.getCommand();
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}
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// Process the command
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try {
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// Check for rich-command
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this.dispatcher.execute(sender, command);
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return true;
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} catch (NullPointerException e) {
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// Check for legacy-command
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final String[] splitCommand = command.split(" ");
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final String commandName = splitCommand[0];
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final CommandProcessor commandProcessor = commandProcessorMap.get(commandName.toLowerCase());
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if (commandProcessor == null) {
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if (unknownCommandCallback != null) {
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this.unknownCommandCallback.apply(sender, command);
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}
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return false;
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}
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// Execute the legacy-command
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final String[] args = command.substring(command.indexOf(" ") + 1).split(" ");
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return commandProcessor.process(sender, commandName, args);
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}
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}
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/**
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* Gets the callback executed once an unknown command is run.
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*
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* @return the unknown command callback, null if not any
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*/
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@Nullable
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public CommandCallback getUnknownCommandCallback() {
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return unknownCommandCallback;
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}
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/**
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* Sets the callback executed once an unknown command is run.
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*
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* @param unknownCommandCallback the new unknown command callback,
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* setting it to null mean that nothing will be executed
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*/
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public void setUnknownCommandCallback(@Nullable CommandCallback unknownCommandCallback) {
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this.unknownCommandCallback = unknownCommandCallback;
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}
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/**
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* Gets the {@link ConsoleSender} (which is used as a {@link CommandSender}).
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*
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* @return the {@link ConsoleSender}
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*/
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@NotNull
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public ConsoleSender getConsoleSender() {
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return consoleSender;
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}
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/**
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* Gets the {@link DeclareCommandsPacket} for a specific player.
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* <p>
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* Can be used to update the {@link Player} auto-completion list.
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*
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* @param player the player to get the commands packet
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* @return the {@link DeclareCommandsPacket} for {@code player}
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*/
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@NotNull
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public DeclareCommandsPacket createDeclareCommandsPacket(@NotNull Player player) {
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return buildPacket(player);
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}
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/**
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* Builds the {@link DeclareCommandsPacket} for a {@link Player}.
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*
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* @param player the player to build the packet for
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* @return the commands packet for the specific player
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*/
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@NotNull
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private DeclareCommandsPacket buildPacket(@NotNull Player player) {
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DeclareCommandsPacket declareCommandsPacket = new DeclareCommandsPacket();
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List<DeclareCommandsPacket.Node> nodes = new ArrayList<>();
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// Contains the children of the main node (all commands name)
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IntList rootChildren = new IntArrayList();
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// Brigadier-like commands
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for (Command command : dispatcher.getCommands()) {
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// Check if player should see this command
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final CommandCondition commandCondition = command.getCondition();
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if (commandCondition != null) {
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// Do not show command if return false
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if (!commandCondition.apply(player)) {
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continue;
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}
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}
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// The main root of this command
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IntList cmdChildren = new IntArrayList();
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final Collection<CommandSyntax> syntaxes = command.getSyntaxes();
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List<String> names = new ArrayList<>();
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names.add(command.getName());
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names.addAll(Arrays.asList(command.getAliases()));
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for (String name : names) {
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createCommand(nodes, cmdChildren, name, syntaxes, rootChildren);
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}
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}
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// Pair<CommandName,EnabledTracking>
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final List<Pair<String, Boolean>> commandsPair = new ArrayList<>();
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for (CommandProcessor commandProcessor : commandProcessorMap.values()) {
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final boolean enableTracking = commandProcessor.enableWritingTracking();
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// Do not show command if return false
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if (!commandProcessor.hasAccess(player))
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continue;
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commandsPair.add(Pair.of(commandProcessor.getCommandName(), enableTracking));
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final String[] aliases = commandProcessor.getAliases();
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if (aliases == null || aliases.length == 0)
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continue;
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for (String alias : aliases) {
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commandsPair.add(Pair.of(alias, enableTracking));
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}
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}
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for (Pair<String, Boolean> pair : commandsPair) {
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final String name = pair.getLeft();
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final boolean tracking = pair.getRight();
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// Server suggestion (ask_server)
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{
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DeclareCommandsPacket.Node tabNode = new DeclareCommandsPacket.Node();
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tabNode.flags = getFlag(NodeType.ARGUMENT, true, false, tracking);
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tabNode.name = tracking ? "tab_completion" : "args";
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tabNode.parser = "brigadier:string";
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tabNode.properties = packetWriter -> packetWriter.writeVarInt(2); // Greedy phrase
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tabNode.children = new int[0];
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if (tracking) {
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tabNode.suggestionsType = "minecraft:ask_server";
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}
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nodes.add(tabNode);
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}
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DeclareCommandsPacket.Node literalNode = new DeclareCommandsPacket.Node();
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literalNode.flags = getFlag(NodeType.LITERAL, true, false, false);
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literalNode.name = name;
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literalNode.children = new int[]{nodes.size() - 1};
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rootChildren.add(nodes.size());
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nodes.add(literalNode);
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}
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DeclareCommandsPacket.Node rootNode = new DeclareCommandsPacket.Node();
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rootNode.flags = 0;
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rootNode.children = ArrayUtils.toArray(rootChildren);
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nodes.add(rootNode);
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declareCommandsPacket.nodes = nodes.toArray(new DeclareCommandsPacket.Node[0]);
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declareCommandsPacket.rootIndex = nodes.size() - 1;
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return declareCommandsPacket;
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}
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/**
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* Adds the command's syntaxes to the nodes list.
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*
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* @param nodes the nodes of the packet
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* @param cmdChildren the main root of this command
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* @param name the name of the command (or the alias)
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* @param syntaxes the syntaxes of the command
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* @param rootChildren the children of the main node (all commands name)
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*/
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private void createCommand(@NotNull List<DeclareCommandsPacket.Node> nodes,
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@NotNull IntList cmdChildren,
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@NotNull String name,
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@NotNull Collection<CommandSyntax> syntaxes,
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@NotNull IntList rootChildren) {
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DeclareCommandsPacket.Node literalNode = createMainNode(name, syntaxes.isEmpty());
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rootChildren.add(nodes.size());
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nodes.add(literalNode);
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// Contains the arguments of the already-parsed syntaxes
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List<Argument[]> syntaxesArguments = new ArrayList<>();
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// Contains the nodes of an argument
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Map<Argument, List<DeclareCommandsPacket.Node>> storedArgumentsNodes = new HashMap<>();
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for (CommandSyntax syntax : syntaxes) {
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// Represent the last nodes computed in the last iteration
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List<DeclareCommandsPacket.Node> lastNodes = null;
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// Represent the children of the last node
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IntList argChildren = null;
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final Argument[] arguments = syntax.getArguments();
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for (int i = 0; i < arguments.length; i++) {
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final Argument argument = arguments[i];
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final boolean isFirst = i == 0;
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final boolean isLast = i == arguments.length - 1;
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boolean foundSharedPart = false;
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for (Argument[] parsedArguments : syntaxesArguments) {
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if (ArrayUtils.sameStart(arguments, parsedArguments, i + 1)) {
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final Argument sharedArgument = parsedArguments[i];
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argChildren = new IntArrayList();
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lastNodes = storedArgumentsNodes.get(sharedArgument);
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foundSharedPart = true;
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}
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}
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if (foundSharedPart) {
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continue;
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}
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final List<DeclareCommandsPacket.Node> argumentNodes = toNodes(argument, isLast);
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storedArgumentsNodes.put(argument, argumentNodes);
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for (DeclareCommandsPacket.Node node : argumentNodes) {
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final int childId = nodes.size();
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if (isFirst) {
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// Add to main command child
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cmdChildren.add(childId);
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} else {
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// Add to previous argument children
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argChildren.add(childId);
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}
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if (lastNodes != null) {
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final int[] children = ArrayUtils.toArray(argChildren);
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lastNodes.forEach(n -> n.children = n.children == null ?
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children :
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ArrayUtils.concatenateIntArrays(n.children, children));
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}
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nodes.add(node);
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}
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//System.out.println("debug: " + argument.getId() + " : " + isFirst + " : " + isLast);
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//System.out.println("debug2: " + i);
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//System.out.println("size: " + (argChildren != null ? argChildren.size() : "NULL"));
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if (isLast) {
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// Last argument doesn't have children
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final int[] children = new int[0];
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argumentNodes.forEach(node -> node.children = children);
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} else {
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// Create children list which will be filled during next iteration
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argChildren = new IntArrayList();
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lastNodes = argumentNodes;
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}
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}
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syntaxesArguments.add(arguments);
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}
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final int[] children = ArrayUtils.toArray(cmdChildren);
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//System.out.println("test " + children.length + " : " + children[0]);
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literalNode.children = children;
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if (children.length > 0) {
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literalNode.redirectedNode = children[0];
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}
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}
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@NotNull
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private DeclareCommandsPacket.Node createMainNode(@NotNull String name, boolean executable) {
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DeclareCommandsPacket.Node literalNode = new DeclareCommandsPacket.Node();
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literalNode.flags = getFlag(NodeType.LITERAL, executable, false, false);
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literalNode.name = name;
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return literalNode;
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}
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/**
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* Converts an argument to a node with the correct brigadier parser.
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*
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* @param argument the argument to convert
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* @param executable true if this is the last argument, false otherwise
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* @return the list of nodes that the argument require
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*/
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@NotNull
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private List<DeclareCommandsPacket.Node> toNodes(@NotNull Argument<?> argument, boolean executable) {
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List<DeclareCommandsPacket.Node> nodes = new ArrayList<>();
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// You can uncomment this to test any brigadier parser on the client
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/*DeclareCommandsPacket.Node testNode = simpleArgumentNode(nodes, argument, executable);
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testNode.parser = "minecraft:entity";
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testNode.properties = packetWriter -> packetWriter.writeByte((byte) 0x0);
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if (true) {
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return nodes;
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}*/
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if (argument instanceof ArgumentBoolean) {
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DeclareCommandsPacket.Node argumentNode = simpleArgumentNode(nodes, argument, executable, false);
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argumentNode.parser = "brigadier:bool";
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argumentNode.properties = packetWriter -> packetWriter.writeByte((byte) 0);
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} else if (argument instanceof ArgumentDouble) {
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DeclareCommandsPacket.Node argumentNode = simpleArgumentNode(nodes, argument, executable, false);
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ArgumentDouble argumentDouble = (ArgumentDouble) argument;
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argumentNode.parser = "brigadier:double";
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argumentNode.properties = packetWriter -> {
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packetWriter.writeByte(getNumberProperties(argumentDouble));
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if (argumentDouble.hasMin())
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packetWriter.writeDouble(argumentDouble.getMin());
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if (argumentDouble.hasMax())
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packetWriter.writeDouble(argumentDouble.getMax());
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};
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} else if (argument instanceof ArgumentFloat) {
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DeclareCommandsPacket.Node argumentNode = simpleArgumentNode(nodes, argument, executable, false);
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ArgumentFloat argumentFloat = (ArgumentFloat) argument;
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argumentNode.parser = "brigadier:float";
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argumentNode.properties = packetWriter -> {
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packetWriter.writeByte(getNumberProperties(argumentFloat));
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if (argumentFloat.hasMin())
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packetWriter.writeFloat(argumentFloat.getMin());
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if (argumentFloat.hasMax())
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packetWriter.writeFloat(argumentFloat.getMax());
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};
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} else if (argument instanceof ArgumentInteger) {
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DeclareCommandsPacket.Node argumentNode = simpleArgumentNode(nodes, argument, executable, false);
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ArgumentInteger argumentInteger = (ArgumentInteger) argument;
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argumentNode.parser = "brigadier:integer";
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argumentNode.properties = packetWriter -> {
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packetWriter.writeByte(getNumberProperties(argumentInteger));
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if (argumentInteger.hasMin())
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packetWriter.writeInt(argumentInteger.getMin());
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if (argumentInteger.hasMax())
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packetWriter.writeInt(argumentInteger.getMax());
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};
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} else if (argument instanceof ArgumentWord) {
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ArgumentWord argumentWord = (ArgumentWord) argument;
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// Add the single word properties + parser
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final Consumer<DeclareCommandsPacket.Node> wordConsumer = node -> {
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node.parser = "brigadier:string";
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node.properties = packetWriter -> {
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packetWriter.writeVarInt(0); // Single word
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};
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};
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final boolean hasRestriction = argumentWord.hasRestrictions();
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if (hasRestriction) {
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// Create a node for each restrictions as literal
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for (String restrictionWord : argumentWord.getRestrictions()) {
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DeclareCommandsPacket.Node argumentNode = new DeclareCommandsPacket.Node();
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nodes.add(argumentNode);
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argumentNode.flags = getFlag(NodeType.LITERAL, executable, false, false);
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argumentNode.name = restrictionWord;
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wordConsumer.accept(argumentNode);
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}
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} else {
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// Can be any word, add only one argument node
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DeclareCommandsPacket.Node argumentNode = simpleArgumentNode(nodes, argument, executable, false);
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wordConsumer.accept(argumentNode);
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}
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} else if (argument instanceof ArgumentDynamicWord) {
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DeclareCommandsPacket.Node argumentNode = simpleArgumentNode(nodes, argument, executable, true);
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argumentNode.parser = "brigadier:string";
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argumentNode.properties = packetWriter -> {
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packetWriter.writeVarInt(0); // Single word
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};
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argumentNode.suggestionsType = "minecraft:ask_server";
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} else if (argument instanceof ArgumentString) {
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DeclareCommandsPacket.Node argumentNode = simpleArgumentNode(nodes, argument, executable, false);
|
|
|
|
argumentNode.parser = "brigadier:string";
|
|
argumentNode.properties = packetWriter -> {
|
|
packetWriter.writeVarInt(1); // Quotable phrase
|
|
};
|
|
} else if (argument instanceof ArgumentStringArray) {
|
|
DeclareCommandsPacket.Node argumentNode = simpleArgumentNode(nodes, argument, executable, false);
|
|
|
|
argumentNode.parser = "brigadier:string";
|
|
argumentNode.properties = packetWriter -> {
|
|
packetWriter.writeVarInt(2); // Greedy phrase
|
|
};
|
|
} else if (argument instanceof ArgumentDynamicStringArray) {
|
|
DeclareCommandsPacket.Node argumentNode = simpleArgumentNode(nodes, argument, executable, true);
|
|
|
|
argumentNode.parser = "brigadier:string";
|
|
argumentNode.properties = packetWriter -> {
|
|
packetWriter.writeVarInt(2); // Greedy phrase
|
|
};
|
|
argumentNode.suggestionsType = "minecraft:ask_server";
|
|
} else if (argument instanceof ArgumentColor) {
|
|
DeclareCommandsPacket.Node argumentNode = simpleArgumentNode(nodes, argument, executable, false);
|
|
argumentNode.parser = "minecraft:color";
|
|
} else if (argument instanceof ArgumentTime) {
|
|
DeclareCommandsPacket.Node argumentNode = simpleArgumentNode(nodes, argument, executable, false);
|
|
argumentNode.parser = "minecraft:time";
|
|
} else if (argument instanceof ArgumentEnchantment) {
|
|
DeclareCommandsPacket.Node argumentNode = simpleArgumentNode(nodes, argument, executable, false);
|
|
argumentNode.parser = "minecraft:item_enchantment";
|
|
} else if (argument instanceof ArgumentParticle) {
|
|
DeclareCommandsPacket.Node argumentNode = simpleArgumentNode(nodes, argument, executable, false);
|
|
argumentNode.parser = "minecraft:particle";
|
|
} else if (argument instanceof ArgumentPotionEffect) {
|
|
DeclareCommandsPacket.Node argumentNode = simpleArgumentNode(nodes, argument, executable, false);
|
|
argumentNode.parser = "minecraft:mob_effect";
|
|
} else if (argument instanceof ArgumentEntityType) {
|
|
DeclareCommandsPacket.Node argumentNode = simpleArgumentNode(nodes, argument, executable, false);
|
|
argumentNode.parser = "minecraft:entity_summon";
|
|
} else if (argument instanceof ArgumentIntRange) {
|
|
DeclareCommandsPacket.Node argumentNode = simpleArgumentNode(nodes, argument, executable, false);
|
|
argumentNode.parser = "minecraft:int_range";
|
|
} else if (argument instanceof ArgumentFloatRange) {
|
|
DeclareCommandsPacket.Node argumentNode = simpleArgumentNode(nodes, argument, executable, false);
|
|
argumentNode.parser = "minecraft:float_range";
|
|
} else if (argument instanceof ArgumentEntities) {
|
|
ArgumentEntities argumentEntities = (ArgumentEntities) argument;
|
|
DeclareCommandsPacket.Node argumentNode = simpleArgumentNode(nodes, argument, executable, false);
|
|
argumentNode.parser = "minecraft:entity";
|
|
argumentNode.properties = packetWriter -> {
|
|
byte mask = 0;
|
|
if (argumentEntities.isOnlySingleEntity()) {
|
|
mask += 1;
|
|
}
|
|
if (argumentEntities.isOnlyPlayers()) {
|
|
mask += 2;
|
|
}
|
|
packetWriter.writeByte(mask);
|
|
};
|
|
} else if (argument instanceof ArgumentItemStack) {
|
|
DeclareCommandsPacket.Node argumentNode = simpleArgumentNode(nodes, argument, executable, false);
|
|
argumentNode.parser = "minecraft:item_stack";
|
|
} else if (argument instanceof ArgumentNbtCompoundTag) {
|
|
DeclareCommandsPacket.Node argumentNode = simpleArgumentNode(nodes, argument, executable, false);
|
|
argumentNode.parser = "minecraft:nbt_compound_tag";
|
|
} else if (argument instanceof ArgumentNbtTag) {
|
|
DeclareCommandsPacket.Node argumentNode = simpleArgumentNode(nodes, argument, executable, false);
|
|
argumentNode.parser = "minecraft:nbt_tag";
|
|
}
|
|
|
|
return nodes;
|
|
}
|
|
|
|
private byte getNumberProperties(@NotNull ArgumentNumber<? extends Number> argumentNumber) {
|
|
byte result = 0;
|
|
if (argumentNumber.hasMin())
|
|
result += 1;
|
|
if (argumentNumber.hasMax())
|
|
result += 2;
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* Builds an argument nod and add it to the nodes list.
|
|
*
|
|
* @param nodes the current nodes list
|
|
* @param argument the argument
|
|
* @param executable true if this will be the last argument, false otherwise
|
|
* @return the created {@link DeclareCommandsPacket.Node}
|
|
*/
|
|
@NotNull
|
|
private DeclareCommandsPacket.Node simpleArgumentNode(@NotNull List<DeclareCommandsPacket.Node> nodes,
|
|
@NotNull Argument<?> argument, boolean executable, boolean suggestion) {
|
|
DeclareCommandsPacket.Node argumentNode = new DeclareCommandsPacket.Node();
|
|
nodes.add(argumentNode);
|
|
|
|
argumentNode.flags = getFlag(NodeType.ARGUMENT, executable, false, suggestion);
|
|
argumentNode.name = argument.getId();
|
|
|
|
return argumentNode;
|
|
}
|
|
|
|
private byte getFlag(@NotNull NodeType type, boolean executable, boolean redirect, boolean suggestionType) {
|
|
byte result = (byte) type.mask;
|
|
|
|
if (executable) {
|
|
result |= 0x04;
|
|
}
|
|
|
|
if (redirect) {
|
|
result |= 0x08;
|
|
}
|
|
|
|
if (suggestionType) {
|
|
result |= 0x10;
|
|
}
|
|
return result;
|
|
}
|
|
|
|
private enum NodeType {
|
|
ROOT(0), LITERAL(0b1), ARGUMENT(0b10), NONE(0x11);
|
|
|
|
private final int mask;
|
|
|
|
NodeType(int mask) {
|
|
this.mask = mask;
|
|
}
|
|
|
|
}
|
|
}
|