package suicideChess;

/**
 * @author djib
 * 
 * This class avoids the use of strings for squares
 * 
 * $LastChangedDate$
 * $LastChangedRevision$
 * $LastChangedBy$
 */


public class Square {
	private char file;
	private int fileNb;
	private int rank;

	public class NotAValidSquare extends Exception {
		/**
		 * Generated by Eclipse
		 */
		private static final long serialVersionUID = 7586171991212094565L;

		NotAValidSquare(String s) { super(s); };
	}
	
	public Square(String square) throws NotAValidSquare {
		if (square.length()!=2 || !(Character.isLetter(square.toCharArray()[0])) || 
				!(Character.isDigit(square.toCharArray()[1]))) {
			throw new NotAValidSquare(square);	
		}
		file = Character.toLowerCase(square.toCharArray()[0]);
		fileNb = ((int)file) - ((int)'a') + 1;
		rank = Integer.parseInt(square.substring(1,2));
	}
	
	public char getFile() {
		return file;
	}
	public int getRank() {
		return rank;
	}
	public int getFileNb() {
		return fileNb;
	}
	
	public String toString() {
		return String.valueOf(file)+String.valueOf(rank);
	}
}