/* 
 *  Copyright (C) 2000 - 2008 TagServlet Ltd
 *
 *  This file is part of Open BlueDragon (OpenBD) CFML Server Engine.
 *  
 *  OpenBD is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  Free Software Foundation,version 3.
 *  
 *  OpenBD 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 for more details.
 *  
 *  You should have received a copy of the GNU General Public License
 *  along with OpenBD.  If not, see http://www.gnu.org/licenses/
 *  
 *  Additional permission under GNU GPL version 3 section 7
 *  
 *  If you modify this Program, or any covered work, by linking or combining 
 *  it with any of the JARS listed in the README.txt (or a modified version of 
 *  (that library), containing parts covered by the terms of that JAR, the 
 *  licensors of this Program grant you additional permission to convey the 
 *  resulting work. 
 *  README.txt @ http://www.openbluedragon.org/license/README.txt
 *  
 *  http://www.openbluedragon.org/
 */

package com.naryx.tagfusion.cfm.tag;

import java.io.Serializable;

import com.naryx.tagfusion.cfm.engine.cfCatchData;
import com.naryx.tagfusion.cfm.engine.cfEngine;
import com.naryx.tagfusion.cfm.engine.cfSession;
import com.naryx.tagfusion.cfm.engine.cfmBadFileException;
import com.naryx.tagfusion.cfm.engine.cfmRunTimeException;

/**
 * This tag evaluates an expression and throws an exception if the expression
 * evaluates to false; it does nothing if the expression evaluates to true. This
 * is a subclass of cfIF to take advantage of common methods for evaluating
 * expressions.
 */
public class cfASSERT extends cfIF implements Serializable
{
	static final long serialVersionUID = 1;
  
	protected void defaultParameters( String _tag ) throws cfmBadFileException {
		parseExpression( "cfassert", _tag );
	}

	public String getEndMarker() { return null; }

	public cfTagReturnType render( cfSession _Session ) throws cfmRunTimeException
	{
		if ( cfEngine.isAssertionsEnabled() ) {
			if ( !evaluateExpression( _Session ) )
			{
				cfCatchData	catchData = new cfCatchData( _Session );
				catchData.setType( cfCatchData.TYPE_EXPRESSION );
				catchData.setMessage( "Assertion Failed" );
				catchData.setDetail( "test detail message" );
				catchData.setExtendedInfo( exprString );
				
				throw newRunTimeException( catchData );	
			}
		}
		return cfTagReturnType.NORMAL;
	}
}