/**
 * 
 */
package com.epistimis.uddl;

import org.eclipse.xtext.common.services.DefaultTerminalConverters;
import org.eclipse.xtext.conversion.IValueConverter;
import org.eclipse.xtext.conversion.ValueConverter;
import org.eclipse.xtext.conversion.ValueConverterException;
import org.eclipse.xtext.nodemodel.INode;

/**
 * 
 */
public class UddlValueConverters extends DefaultTerminalConverters {

    IValueConverter<Boolean> realRangeLowerValueConverter = new IValueConverter<Boolean>() {

        @Override
        public Boolean toValue(String string, INode node) throws ValueConverterException {
        	if ((string.startsWith("[")) || (string.isEmpty())) {
        		return Boolean.TRUE;
        	}
        	if (string.startsWith("(")) {
        		return Boolean.FALSE;
        	}
           // default
        	return Boolean.TRUE;
        }

        @Override
        public String toString(Boolean value) throws ValueConverterException {
            return value.booleanValue()? "[" : "(" ;
        }
    };

    IValueConverter<Boolean> realRangeUpperValueConverter = new IValueConverter<Boolean>() {

        @Override
        public Boolean toValue(String string, INode node) throws ValueConverterException {
        	if ((string.startsWith("]")) || (string.isEmpty())) {
        		return Boolean.TRUE;
        	}
        	if (string.startsWith(")")) {
        		return Boolean.FALSE;
        	}
           // default
        	return Boolean.TRUE;
        }

        @Override
        public String toString(Boolean value) throws ValueConverterException {

            return value.booleanValue()? "]" : ")" ;
        }
    };
    

    @ValueConverter(rule = "RRLOWER")
    public IValueConverter<Boolean> RRLOWER() {
        return realRangeLowerValueConverter;
    }

    @ValueConverter(rule = "RRUPPER")
    public IValueConverter<Boolean> RRUPPER() {
        return realRangeUpperValueConverter;
    }

}

    public Class<? extends IValueConverterService> bindIValueConverterService() {
        return UddlValueConverters.class ;
    }