rocket.json.client.CharJsonSerializer.java Source code

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Here is the source code for rocket.json.client.CharJsonSerializer.java

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/*
 * Copyright Miroslav Pokorny
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License. You may obtain a copy of
 * the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations under
 * the License.
 */
package rocket.json.client;

import com.google.gwt.json.client.JSONNull;
import com.google.gwt.json.client.JSONString;
import com.google.gwt.json.client.JSONValue;

/**
 * Reads and writes char values.
 * 
 * @author Miroslav Pokorny
 * @author Vincente Ferrer
 */
public class CharJsonSerializer extends JsonSerializer {

    public final static CharJsonSerializer serializer = new CharJsonSerializer();

    private CharJsonSerializer() {
        super();
    }

    @Override
    public Object readObject(final JSONValue jsonValue) {
        return new Character(read(jsonValue));
    }

    @Override
    public JSONValue writeJson(final Object instance) {
        final Character wrapper = (Character) instance;
        return wrapper == null ? (JSONValue) JSONNull.getInstance()
                : new JSONString(Character.toString(wrapper.charValue()));
    }

    public char read(final JSONValue jsonValue) {
        char value = 0;

        while (true) {
            if (null == jsonValue) {
                break;
            }
            final JSONString c = jsonValue.isString();
            if (null == c) {
                break;
            }

            value = c.stringValue().charAt(0);
            break;
        }

        return value;
    }

    public JSONValue writeJson(final char charValue) {
        return new JSONString(Character.toString(charValue));
    }
}