/*
 * Name: Mike Cifelli
 * Course: CIS 443 - Programming Languages
 * Assignment: Lisp Parser
 */

package parser;

/**
 * This class represents an ATOM in the PL-Lisp implementation.
 */
public class Atom extends SExpression {

    private String text;

    /**
     * Create a new ATOM with the specified text.
     *
     * @param text
     *  the text representing this ATOM
     */
    public Atom(String text) {
        this.text = text;
    }

    /**
     * Test if this S-expression is an ATOM.
     *
     * @return
     *  <code>true</code>
     */
    public boolean atomp() {
        return true;
    }

    /**
     * Returns a string representation of this ATOM.
     *
     * @return
     *  a string representation of this ATOM
     */
    public String toString() {
        return text;
    }

}