/*
 * @(#)ClassDeclaration.java	1.3 04/02/20
 *
 * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
 * SUN PROPRIETARY/CONFIDENTIAL.  Use is subject to license terms.
 */

package com.sun.mirror.declaration;


import java.util.Collection;

import com.sun.mirror.type.ClassType;


/**
 * Represents the declaration of a class.
 * For the declaration of an interface, see {@link InterfaceDeclaration}.
 * Provides access to information about the class, its members, and
 * its constructors.
 * Note that an {@linkplain EnumDeclaration enum} is a kind of class.
 *
 * <p> While a <tt>ClassDeclaration</tt> represents the <i>declaration</i>
 * of a class, a {@link ClassType} represents a class <i>type</i>.
 * See {@link TypeDeclaration} for more on this distinction.
 *
 * <p> {@link com.sun.mirror.util.DeclarationFilter}
 * provides a simple way to select just the items of interest
 * when a method returns a collection of declarations.
 *
 * @author Joseph D. Darcy
 * @author Scott Seligman
 * @version 1.3 04/02/20
 *
 * @see ClassType
 * @since 1.5
 */

public interface ClassDeclaration extends TypeDeclaration {

    /**
     * Returns the class type directly extended by this class.
     * The only class with no superclass is <tt>java.lang.Object</tt>,
     * for which this method returns null.
     *
     * @return the class type directly extended by this class, or null
     * if there is none
     */
    ClassType getSuperclass();

    /**
     * Returns the constructors of this class.
     * This includes the default constructor if this class has
     * no constructors explicitly declared.
     *
     * @return the constructors of this class
     *
     * @see com.sun.mirror.util.DeclarationFilter
     */
    Collection<ConstructorDeclaration> getConstructors();

    /**
     * {@inheritDoc}
     */
    Collection<MethodDeclaration> getMethods();
}