/*
 * (c) Copyright 2010-2011 AgileBirds
 *
 * This file is part of OpenFlexo.
 *
 * OpenFlexo is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * OpenFlexo 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 OpenFlexo. If not, see <http://www.gnu.org/licenses/>.
 *
 */
package org.openflexo.antar.java;

import java.util.Date;

import org.openflexo.antar.expr.Constant.DateSymbolicConstant;
import org.openflexo.antar.expr.Constant.DurationConstant;
import org.openflexo.antar.expr.Constant.FloatSymbolicConstant;
import org.openflexo.antar.expr.DefaultExpressionPrettyPrinter;
import org.openflexo.antar.expr.Expression;
import org.openflexo.antar.expr.SymbolicConstant;
import org.openflexo.toolbox.Duration;

public class JavaExpressionPrettyPrinter extends DefaultExpressionPrettyPrinter {

	public JavaExpressionPrettyPrinter() {
		super(new JavaGrammar());
	}

	@Override
	public String getStringRepresentation(Expression expression) {
		if (expression instanceof JavaPrettyPrintable) {
			return ((JavaPrettyPrintable) expression).getJavaStringRepresentation();
		}
		return super.getStringRepresentation(expression);
	}

	@Override
	protected String makeStringRepresentation(SymbolicConstant constant) {
		if (constant == FloatSymbolicConstant.E) {
			return "Math.E";
		} else if (constant == FloatSymbolicConstant.PI) {
			return "Math.PI";
		} else if (constant == DateSymbolicConstant.NOW) {
			// TODO not implemented
			return "new Date() /* NOW */";
		} else if (constant == DateSymbolicConstant.TODAY) {
			// TODO not implemented
			return "new Date() /* TODAY */";
		}
		return super.makeStringRepresentation(constant);
	}

	@Override
	protected String makeStringRepresentation(DurationConstant constant) {
		return getJavaStringRepresentation(constant.getDuration());
	}

	public static String getJavaStringRepresentation(Duration aDuration) {
		return "new Duration(" + aDuration.getValue() + ",Duration.DurationUnit." + aDuration.getUnit().toString() + ")";
	}

	public static String getJavaStringRepresentation(Date aDate) {
		// TODO not implemented
		return "new Date() /* Please implement date representation for " + aDate + " */";
	}
}