package com.madbean.kata8.readable;

import java.util.HashSet;
import java.util.Iterator;
import java.util.Set;

/**
 *
 * @author Matt Quail
 * @see <a href="http://www.pragprog.com/pragdave/Practices/Kata/KataEight.rdoc,v">Kata 8</a>
 */
public class ReadableAlg extends BaseAlg {

    /** set of words in the wordlist */
    private Set words = new HashSet();

    public void addWord(String aWord) {
        words.add(aWord);
    }

    public void iterateOverPotentialResultWords() {
        for (Iterator i = words.iterator(); i.hasNext();) {
            String word = (String) i.next();

            if (! isValidResultWordLength(word.length())) {
                // too big, or too small, we only want to look at words
                // of a particular size
                continue;
            }
            generateSubstrings(word);
        }
    }

    public boolean validWords(String aLeadingWord, String aTrailingWord) {
        return words.contains(aLeadingWord) && words.contains(aTrailingWord);
    }
}