/*

 * Copyright (c) 2016, 2018, 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 jdk.management.jfr;

/**

 * Helper class for generating toString()

 *

 */

final class Stringifier {

    private final StringBuilder sb = new StringBuilder();

    private boolean first = true;

    public void add(String name, Object value) {

        if (first) {

            first = false;

        } else {

            sb.append(" ");

        }

        boolean isString = value instanceof String;

        sb.append(name).append("=");

        if (value == null) {

            sb.append("null");

        } else {

            if (isString) {

                sb.append("\"");

            }

            sb.append(value);

            if (isString) {

                sb.append("\"");

            }

        }

    }

    @Override

    public String toString() {

        return sb.toString();

    }

}