/**
 *
 * Copyright (c) 2014, the Railo Company Ltd. All rights reserved.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either 
 * version 2.1 of the License, or (at your option) any later version.
 * 
 * This library 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
 * Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public 
 * License along with this library.  If not, see <http://www.gnu.org/licenses/>.
 * 
 **/
package lucee.transformer.cfml.evaluator.func.impl;

import lucee.runtime.exp.TemplateException;
import lucee.runtime.type.util.ArrayUtil;
import lucee.transformer.bytecode.expression.var.Argument;
import lucee.transformer.bytecode.expression.var.BIF;
import lucee.transformer.cfml.evaluator.EvaluatorException;
import lucee.transformer.cfml.evaluator.FunctionEvaluator;
import lucee.transformer.expression.Expression;
import lucee.transformer.expression.literal.LitString;
import lucee.transformer.library.function.FunctionLibFunction;

public class GetTickCount implements FunctionEvaluator{

	@Override
	public void execute(BIF bif, FunctionLibFunction flf) throws TemplateException {
		Argument[] args = bif.getArguments();
		if(ArrayUtil.isEmpty(args)) return;
		
		Argument arg = args[0];
		Expression value = arg.getValue();
		if(value instanceof LitString) {
			String unit=((LitString)value).getString();
			if("nano".equalsIgnoreCase(unit))
				arg.setValue(bif.getFactory().createLitDouble(lucee.runtime.functions.other.GetTickCount.UNIT_NANO), "number");
			else if("milli".equalsIgnoreCase(unit))
				arg.setValue(bif.getFactory().createLitDouble(lucee.runtime.functions.other.GetTickCount.UNIT_MILLI), "number");
			else if("micro".equalsIgnoreCase(unit))
				arg.setValue(bif.getFactory().createLitDouble(lucee.runtime.functions.other.GetTickCount.UNIT_MICRO), "number");
			else if("second".equalsIgnoreCase(unit))
				arg.setValue(bif.getFactory().createLitDouble(lucee.runtime.functions.other.GetTickCount.UNIT_SECOND), "number");
		}
	}

	@Override
	public void evaluate(BIF bif, FunctionLibFunction flf) throws EvaluatorException {}

	@Override
	public FunctionLibFunction pre(BIF bif, FunctionLibFunction flf) throws TemplateException {return null;}

}