fujaba/NetworkParser

package de.uniks.networkparser.logic;

import de.uniks.networkparser.buffer.CharacterBuffer;
import de.uniks.networkparser.interfaces.LocalisationInterface;
import de.uniks.networkparser.interfaces.ObjectCondition;
import de.uniks.networkparser.interfaces.ParserCondition;
/*
NetworkParser
The MIT License
Copyright (c) 2010-2016 Stefan Lindel https://www.github.com/fujaba/NetworkParser/

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
*/
import de.uniks.networkparser.interfaces.SendableEntityCreator;
import de.uniks.networkparser.interfaces.TemplateParser;

/**
 * Not Clazz for neg. Condition.
 *
 * @author Stefan Lindel
 */

public class Not implements ParserCondition, SendableEntityCreator {
    public static final String TAG = "not";
    /** Constant for ITEM. */
    public static final String ITEM = "item";
    /** Varibale for Condition. */
    private ObjectCondition item;

    @Override
    public boolean update(Object evt) {
        if (item != null) {
            return !item.update(evt);
        }
        return false;
    }

    /**
     * @return Not Condition
     */
    public ObjectCondition getItem() {
        return item;
    }

    /**
     * @param value for new Condition
     * @return Not Instance
     */
    public Not with(ObjectCondition value) {
        this.item = value;
        return this;
    }

    @Override
    public String[] getProperties() {
        return new String[] { ITEM };
    }

    @Override
    public Object getSendableInstance(boolean prototyp) {
        return new Not();
    }

    @Override
    public Object getValue(Object entity, String attribute) {
        if (ITEM.equalsIgnoreCase(attribute)) {
            return ((Not) entity).getItem();
        }
        return null;
    }

    @Override
    public boolean setValue(Object entity, String attribute, Object value, String type) {
        if (ITEM.equalsIgnoreCase(attribute)) {
            if (value instanceof ObjectCondition) {
                ((Not) entity).with((ObjectCondition) value);
            }
        }
        return false;
    }

    /**
     * Static Method for instance a new Instance of Not Object.
     *
     * @param condition Condition to negate
     * @return The new Instance
     */
    public static Not create(ObjectCondition condition) {
        return new Not().with(condition);
    }

    @Override
    public String toString() {
        if (this.item != null) {
            return "!" + this.item.toString();
        }
        return "!";
    }

    @Override
    public String getKey() {
        return TAG;
    }

    @Override
    public boolean isExpression() {
        return true;
    }

    @Override
    public Object getValue(LocalisationInterface variables) {
        return null;
    }

    @Override
    public void create(CharacterBuffer buffer, TemplateParser parser, LocalisationInterface customTemplate) {
        if(buffer == null) {
            return;
        }
        buffer.skip();
        buffer.skip();

        ObjectCondition expression = parser.parsing(buffer, customTemplate, true, true, "endnot");
        this.item = expression;
        buffer.skipTo(SPLITEND, false);
        buffer.skip();
        buffer.skip();
    }
}