forked from GeyserMC/Geyser
Merge pull request #308 from rtm516/command-completion
Command auto-completion
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/*
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* Copyright (c) 2019-2020 GeyserMC. http://geysermc.org
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*
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* @author GeyserMC
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* @link https://github.com/GeyserMC/Geyser
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*/
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package org.geysermc.connector.network.translators.java;
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import com.github.steveice10.mc.protocol.data.game.command.CommandNode;
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import com.github.steveice10.mc.protocol.data.game.command.CommandParser;
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import com.github.steveice10.mc.protocol.packet.ingame.server.ServerDeclareCommandsPacket;
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import com.nukkitx.protocol.bedrock.data.CommandData;
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import com.nukkitx.protocol.bedrock.data.CommandEnumData;
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import com.nukkitx.protocol.bedrock.data.CommandParamData;
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import com.nukkitx.protocol.bedrock.packet.AvailableCommandsPacket;
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import lombok.Getter;
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import org.geysermc.connector.GeyserConnector;
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import org.geysermc.connector.network.session.GeyserSession;
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import org.geysermc.connector.network.translators.PacketTranslator;
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import org.geysermc.connector.network.translators.Translator;
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import java.util.*;
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@Translator(packet = ServerDeclareCommandsPacket.class)
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public class JavaServerDeclareCommandsTranslator extends PacketTranslator<ServerDeclareCommandsPacket> {
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@Override
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public void translate(ServerDeclareCommandsPacket packet, GeyserSession session) {
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List<CommandData> commandData = new ArrayList<>();
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Map<Integer, String> commands = new HashMap<>();
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Map<Integer, List<CommandNode>> commandArgs = new HashMap<>();
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// Get the first node, it should be a root node
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CommandNode rootNode = packet.getNodes()[packet.getFirstNodeIndex()];
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// Loop through the root nodes to get all commands
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for (int nodeIndex : rootNode.getChildIndices()) {
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CommandNode node = packet.getNodes()[nodeIndex];
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// Make sure we dont have duplicated commands (happens if there is more than 1 root node)
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if (commands.containsKey(nodeIndex)) { continue; }
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// Get and update the commandArgs list with the found arguments
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if (node.getChildIndices().length >= 1) {
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for (int childIndex : node.getChildIndices()) {
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commandArgs.putIfAbsent(nodeIndex, new ArrayList<>());
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commandArgs.get(nodeIndex).add(packet.getNodes()[childIndex]);
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}
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}
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// Insert the command name into the list
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commands.put(nodeIndex, node.getName());
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}
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// The command flags, not sure what these do apart from break things
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List<CommandData.Flag> flags = new ArrayList<>();
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// Loop through all the found commands
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for (int commandID : commands.keySet()) {
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String commandName = commands.get(commandID);
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// Create a basic alias
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CommandEnumData aliases = new CommandEnumData( commandName + "Aliases", new String[] { commandName.toLowerCase() }, false);
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// Get and parse all params
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CommandParamData[][] params = getParams(commandID, packet.getNodes()[commandID], packet.getNodes());
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// Build the completed command and add it to the final list
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CommandData data = new CommandData(commandName, "A Java server command", flags, (byte) 0, aliases, params);
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commandData.add(data);
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}
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// Add our commands to the AvailableCommandsPacket for the bedrock client
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AvailableCommandsPacket availableCommandsPacket = new AvailableCommandsPacket();
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for (CommandData data : commandData) {
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availableCommandsPacket.getCommands().add(data);
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}
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GeyserConnector.getInstance().getLogger().debug("Sending command packet of " + commandData.size() + " commands");
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// Finally, send the commands to the client
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session.getUpstream().sendPacket(availableCommandsPacket);
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}
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private CommandParamData[][] getParams(int commandID, CommandNode commandNode, CommandNode[] allNodes) {
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// Check if the command is an alias and redirect it
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if (commandNode.getRedirectIndex() != -1) {
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GeyserConnector.getInstance().getLogger().debug("Redirecting command " + commandNode.getName() + " to " + allNodes[commandNode.getRedirectIndex()].getName());
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commandNode = allNodes[commandNode.getRedirectIndex()];
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}
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if (commandNode.getChildIndices().length >= 1) {
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// Create the root param node and build all the children
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ParamInfo rootParam = new ParamInfo(commandNode, null);
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rootParam.buildChildren(allNodes);
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List<CommandParamData[]> treeData = rootParam.getTree();
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CommandParamData[][] params = new CommandParamData[treeData.size()][];
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// Fill the nested params array
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int i = 0;
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for (CommandParamData[] tree : treeData) {
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params[i] = tree;
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i++;
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}
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return params;
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}
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return new CommandParamData[0][0];
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}
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private CommandParamData.Type mapCommandType(CommandParser parser) {
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if (parser == null) { return CommandParamData.Type.STRING; }
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switch (parser) {
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case FLOAT:
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return CommandParamData.Type.FLOAT;
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case INTEGER:
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return CommandParamData.Type.INT;
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case ENTITY:
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case GAME_PROFILE:
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return CommandParamData.Type.TARGET;
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case BLOCK_POS:
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return CommandParamData.Type.BLOCK_POSITION;
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case COLUMN_POS:
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case VEC3:
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return CommandParamData.Type.POSITION;
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case MESSAGE:
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return CommandParamData.Type.MESSAGE;
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case NBT:
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case NBT_COMPOUND_TAG:
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case NBT_TAG:
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case NBT_PATH:
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return CommandParamData.Type.JSON;
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case RESOURCE_LOCATION:
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return CommandParamData.Type.FILE_PATH;
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case INT_RANGE:
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return CommandParamData.Type.INT_RANGE;
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case BOOL:
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case DOUBLE:
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case STRING:
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case VEC2:
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case BLOCK_STATE:
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case BLOCK_PREDICATE:
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case ITEM_STACK:
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case ITEM_PREDICATE:
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case COLOR:
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case COMPONENT:
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case OBJECTIVE:
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case OBJECTIVE_CRITERIA:
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case OPERATION: // Possibly OPERATOR
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case PARTICLE:
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case ROTATION:
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case SCOREBOARD_SLOT:
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case SCORE_HOLDER:
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case SWIZZLE:
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case TEAM:
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case ITEM_SLOT:
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case MOB_EFFECT:
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case FUNCTION:
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case ENTITY_ANCHOR:
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case RANGE:
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case FLOAT_RANGE:
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case ITEM_ENCHANTMENT:
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case ENTITY_SUMMON:
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case DIMENSION:
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case TIME:
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default:
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return CommandParamData.Type.STRING;
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}
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}
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@Getter
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private class ParamInfo {
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private CommandNode paramNode;
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private CommandParamData paramData;
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private List<ParamInfo> children;
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public ParamInfo(CommandNode paramNode, CommandParamData paramData) {
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this.paramNode = paramNode;
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this.paramData = paramData;
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this.children = new ArrayList<>();
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}
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public void buildChildren(CommandNode[] allNodes) {
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int enumIndex = -1;
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for (int paramID : paramNode.getChildIndices()) {
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CommandNode paramNode = allNodes[paramID];
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if (paramNode.getParser() == null) {
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if (enumIndex == -1) {
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enumIndex = children.size();
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// Create the new enum command
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CommandEnumData enumData = new CommandEnumData(paramNode.getName(), new String[] { paramNode.getName() }, false);
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children.add(new ParamInfo(paramNode, new CommandParamData(paramNode.getName(), false, enumData, mapCommandType(paramNode.getParser()), null, Collections.emptyList())));
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} else {
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// Get the existing enum
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ParamInfo enumParamInfo = children.get(enumIndex);
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// Extend the current list of enum values
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String[] enumOptions = Arrays.copyOf(enumParamInfo.getParamData().getEnumData().getValues(), enumParamInfo.getParamData().getEnumData().getValues().length + 1);
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enumOptions[enumOptions.length - 1] = paramNode.getName();
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// Re-create the command using the updated values
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CommandEnumData enumData = new CommandEnumData(enumParamInfo.getParamData().getEnumData().getName(), enumOptions, false);
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children.set(enumIndex, new ParamInfo(enumParamInfo.getParamNode(), new CommandParamData(enumParamInfo.getParamData().getName(), false, enumData, enumParamInfo.getParamData().getType(), null, Collections.emptyList())));
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}
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}else{
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// Put the non-enum param into the list
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children.add(new ParamInfo(paramNode, new CommandParamData(paramNode.getName(), false, null, mapCommandType(paramNode.getParser()), null, Collections.emptyList())));
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}
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}
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// Recursively build all child options
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for (ParamInfo child : children) {
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child.buildChildren(allNodes);
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}
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}
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public List<CommandParamData[]> getTree() {
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List<CommandParamData[]> treeParamData = new ArrayList<>();
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for (ParamInfo child : children) {
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// Get the tree from the child
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List<CommandParamData[]> childTree = child.getTree();
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// Un-pack the tree append the child node to it and push into the list
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for (CommandParamData[] subchild : childTree) {
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CommandParamData[] tmpTree = new ArrayList<CommandParamData>() {
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{
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add(child.getParamData());
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addAll(Arrays.asList(subchild));
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}
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}.toArray(new CommandParamData[0]);
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treeParamData.add(tmpTree);
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}
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// If we have no more child parameters just the child
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if (childTree.size() == 0) {
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treeParamData.add(new CommandParamData[] { child.getParamData() });
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}
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}
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return treeParamData;
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}
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}
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}
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