DirectivesStack.java

/**
 * Copyright (C) 2011-2015 The XDocReport Team <xdocreport@googlegroups.com>
 *
 * All rights reserved.
 *
 * 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.
 */
package fr.opensagres.xdocreport.template.formatter;

import java.util.Stack;

import fr.opensagres.xdocreport.template.formatter.Directive.DirectiveType;

public class DirectivesStack
    extends Stack<Directive>
{

    private static final long serialVersionUID = -11427919871179717L;

    public Directive peekDirective( DirectiveType type )
    {
        Directive directive = peekOrNull();
        if ( directive == null )
        {
            return null;
        }
        if ( directive.getType().equals( type ) )
        {
            return directive;
        }
        Directive d = null;
        Object[] elementData = super.toArray();
        for ( int i = elementData.length - 1; i >= 0; i-- )
        {
            d = (Directive) elementData[i];
            if ( d.getType().equals( type ) )
            {
                return d;
            }
        }
        return null;
    }

    public Directive peekOrNull()
    {
        if ( isEmpty() )
        {
            return null;
        }
        return super.peek();
    }

}