com.github.alex1304.ultimategdbot.api.command.ArgumentList Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of ultimategdbot-api Show documentation

There is a newer version: 6.0.2

package com.github.alex1304.ultimategdbot.api.command;

import static java.util.stream.Collectors.joining;

import java.util.ArrayDeque;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;

/**
 * Represents the list of the arguments of a command.
 */
public class ArgumentList {

	private final List tokens;
	
	public ArgumentList(List tokens) {
		this.tokens = tokens;
	}

	/**
	 * Gets the number of tokens (arguments) present in the list.
	 * 
	 * @return the token count
	 */
	public int tokenCount() {
		return tokens.size();
	}
	
	/**
	 * Returns the argument at the specified position.
	 * 
	 * @param position the position of the argument
	 * @return the argument at the specified position
	 * @throws IndexOutOfBoundsException if the position is out of bounds
	 */
	public String get(int position) {
		return tokens.get(position);
	}
	
	/**
	 * Gets all arguments from the specified position to the last one, into one
	 * String resulting of the concatenation of all arguments (separated with a
	 * whitespace). Specifying a position <= 0 returns all arguments. Specifying a
	 * position >= tokenCount will result in an empty String.
	 * 
	 * @param position the position of the first arguments
	 * @return all arguments into one concatenated String
	 */
	public String getAllAfter(int position) {
		return tokens.stream().skip(position).collect(joining(" "));
	}

	public List getTokens() {
		return Collections.unmodifiableList(tokens);
	}
	
	public List getTokens(int maxCount) {
		var mergedTokens = new ArrayDeque<>(tokens);
		while (mergedTokens.size() > 1 && mergedTokens.size() > maxCount) {
			var lastArg = mergedTokens.removeLast();
			var beforeLastArg = mergedTokens.removeLast();
			mergedTokens.addLast(beforeLastArg + " " + lastArg);
		}
		return Collections.unmodifiableList(new ArrayList<>(mergedTokens));
	}
	
	@Override
	public String toString() {
		return "ArgumentList{tokens=" + tokens.toString() + "}";
	}
}