/*

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle in the LICENSE file that accompanied this code.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

package com.sun.codemodel.internal;

import java.util.Iterator;

import java.util.List;

/**

 * Represents a wildcard type like "? extends Foo".

 *

 * <p>

 * Instances of this class can be obtained from {@link JClass#wildcard()}

 *

 * TODO: extend this to cover "? super Integer".

 *

 * <p>

 * Our modeling of types are starting to look really ugly.

 * ideally it should have been done somewhat like APT,

 * but it's too late now.

 *

 * @author Kohsuke Kawaguchi

 */

final class JTypeWildcard extends JClass {

    private final JClass bound;

    JTypeWildcard(JClass bound) {

        super(bound.owner());

        this.bound = bound;

    }

    public String name() {

        return "? extends "+bound.name();

    }

    public String fullName() {

        return "? extends "+bound.fullName();

    }

    public JPackage _package() {

        return null;

    }

    /**

     * Returns the class bound of this variable.

     *

     * <p>

     * If no bound is given, this method returns {@link Object}.

     */

    public JClass _extends() {

        if(bound!=null)

            return bound;

        else

            return owner().ref(Object.class);

    }

    /**

     * Returns the interface bounds of this variable.

     */

    public Iterator<JClass> _implements() {

        return bound._implements();

    }

    public boolean isInterface() {

        return false;

    }

    public boolean isAbstract() {

        return false;

    }

    protected JClass substituteParams(JTypeVar[] variables, List<JClass> bindings) {

        JClass nb = bound.substituteParams(variables,bindings);

        if(nb==bound)

            return this;

        else

            return new JTypeWildcard(nb);

    }

    public void generate(JFormatter f) {

        if(bound._extends()==null)

            f.p("?");   // instead of "? extends Object"

        else

            f.p("? extends").g(bound);

    }

}