/*

 * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved.

 * 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.ArrayList;

import java.util.List;

/**

 * Implementation of {@link JGenerifiable}.

 *

 * @author

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

 */

abstract class JGenerifiableImpl implements JGenerifiable, JDeclaration {

    /** Lazily created list of {@link JTypeVar}s. */

    private List<JTypeVar> typeVariables = null;

    protected abstract JCodeModel owner();

    public void declare( JFormatter f ) {

        if(typeVariables!=null) {

            f.p('<');

            for (int i = 0; i < typeVariables.size(); i++) {

                if(i!=0)    f.p(',');

                f.d(typeVariables.get(i));

            }

            f.p('>');

        }

    }

    public JTypeVar generify(String name) {

        JTypeVar v = new JTypeVar(owner(),name);

        if(typeVariables==null)

            typeVariables = new ArrayList<JTypeVar>(3);

        typeVariables.add(v);

        return v;

    }

    public JTypeVar generify(String name, Class<?> bound) {

        return generify(name,owner().ref(bound));

    }

    public JTypeVar generify(String name, JClass bound) {

        return generify(name).bound(bound);

    }

    public JTypeVar[] typeParams() {

        if(typeVariables==null)

            return JTypeVar.EMPTY_ARRAY;

        else

            return typeVariables.toArray(new JTypeVar[typeVariables.size()]);

    }

}