/* 
 *  Copyright (C) 2000 - 2010 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.parser.script;

/**
 * This class represents a case/default label in a switch statement. A cfswitchstatement should
 * hold a vector of these.
 */

import java.util.Iterator;
import java.util.List;

import com.naryx.tagfusion.cfm.engine.cfData;
import com.naryx.tagfusion.cfm.engine.cfmRunTimeException;
import com.naryx.tagfusion.cfm.parser.CFContext;
import com.naryx.tagfusion.cfm.parser.CFExpression;
import com.naryx.tagfusion.cfm.tag.cfTag;

public class CFCase implements CFScriptStatement, java.io.Serializable {

	private static final long serialVersionUID = 1L;

	private List<CFScriptStatement> statementBlock;
	private boolean isDefault = true;
	private CFExpression constant;
	private	cfTag	hostTag	= null;
	
	public CFCase( CFExpression _constant, List<CFScriptStatement> _statementBlock ) {
		this( _statementBlock );
		isDefault = false;
		constant = _constant;
	}
	
	public cfTag getHostTag(){
		return hostTag;
	}
	
	public void setHostTag( cfTag _hostTag ){
		hostTag = _hostTag;
		for (int i = 0; i < statementBlock.size(); i++)
			statementBlock.get(i).setHostTag(_hostTag);
	}


	public CFCase( List<CFScriptStatement> _statementBlock ) {
		statementBlock = _statementBlock;
	}

	// shouldn't be called if isDefault is true else will get NullPointerException
	public cfData getConstant( CFContext context ) throws cfmRunTimeException {
		return constant.Eval(context);
	}

	public boolean isDefault() {
		return isDefault;
	}

	public void checkIndirectAssignments( String[] scriptSource ) {
		for (int i = 0; i < statementBlock.size(); i++) {
			statementBlock.get(i).checkIndirectAssignments(scriptSource);
		}
	}

	public CFStatementResult Exec( CFContext context ) throws cfmRunTimeException {
		Iterator<CFScriptStatement> statements = statementBlock.iterator();

		while (statements.hasNext()) {
			CFStatementResult result = statements.next().Exec(context);
			if ( result != null ) {
				return result;
			}
		}
		return null;
	}

	public String toString() {
		String temp = "case :\n";
		Iterator<CFScriptStatement> statements = statementBlock.iterator();

		while (statements.hasNext())
			temp += statements.next().Decompile(0) + "\n";

		return temp;
	}

	public String Decompile( int indent ) {
		StringBuilder sb = new StringBuilder();
		if ( isDefault ){
			sb.append( "default:" );
		}else{
			sb.append( "case " );
			sb.append( constant.Decompile(0) );
		}
		return sb.toString();
	}

}