/*

 * 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;

/**

 * Type variable used to declare generics.

 *

 * @see JGenerifiable

 * @author

 *     Kohsuke Kawaguchi (kohsuke.kawaguchi@sun.com)

 */

public final class JTypeVar extends JClass implements JDeclaration {

    private final String name;

    private JClass bound;

    JTypeVar(JCodeModel owner, String _name) {

        super(owner);

        this.name = _name;

    }

    public String name() {

        return name;

    }

    public String fullName() {

        return name;

    }

    public JPackage _package() {

        return null;

    }

    /**

     * Adds a bound to this variable.

     *

     * @return  this

     */

    public JTypeVar bound( JClass c ) {

        if(bound!=null)

            throw new IllegalArgumentException("type variable has an existing class bound "+bound);

        bound = c;

        return this;

    }

    /**

     * 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;

    }

    /**

     * Prints out the declaration of the variable.

     */

    public void declare(JFormatter f) {

        f.id(name);

        if(bound!=null)

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

    }

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

        for(int i=0;i<variables.length;i++)

            if(variables[i]==this)

                return bindings.get(i);

        return this;

    }

    public void generate(JFormatter f) {

        f.id(name);

    }

}