services.RandomNameGeneratorService Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of jsyntaxtree Show documentation

Syntax tree representation of the JASS language

The newest version!

package services;

import interfaces.IRandomNameGeneratorService;

import java.util.ArrayList;
import java.util.List;
import java.util.Random;

/**
 * Used to generate random and unique variable/function names
 */
public final class RandomNameGeneratorService implements IRandomNameGeneratorService {

    private static String ALPHABET = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ";
    private static int LENGTH = 12;
    private List usedNames;
    private Random random;

    /**
     * Initialized the random name generator
     */
    public RandomNameGeneratorService() {
        this.random = new Random();
        this.usedNames = new ArrayList<>();
    }

    /**
     * Produces the next unique random name
     *
     * @return  Unique random name
     */
    @Override
    public String next() {
        StringBuilder name = new StringBuilder();
        for(int i = 0; i < LENGTH; i++) {
            name.append(ALPHABET.charAt(random.nextInt(ALPHABET.length())));
        }
        if(usedNames.contains(name.toString())) {
            return next();
        } else {
            usedNames.add(name.toString());
            return name.toString();
        }
    }
}