/*
* Copyright 2010 NCHOVY
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.krakenapps.sqlparser.parser;
import org.krakenapps.bnf.Binding;
import org.krakenapps.bnf.Parser;
import org.krakenapps.sqlparser.ast.NumericValueExpression;
public class FactorParser implements Parser {
@Override
public Object parse(Binding b) {
if (b.getChildren() != null) {
String sign = (String) b.getChildren()[0].getValue();
NumericValueExpression expr = (NumericValueExpression) b.getChildren()[1].getValue();
if (sign.equals("-"))
return new NumericValueExpression(expr, true);
return expr;
} else {
return b.getValue();
}
}
}