org.apache.fop.fo.expr.AbsFunction Maven / Gradle / Ivy
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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.
*/
/* $Id: AbsFunction.java 1328963 2012-04-22 20:09:42Z gadams $ */
package org.apache.fop.fo.expr;
import org.apache.fop.datatypes.Numeric;
import org.apache.fop.fo.properties.Property;
/**
* Class modelling the abs Number Function. See Sec. 5.10.1 of the XSL-FO spec.
*/
public class AbsFunction extends FunctionBase {
/** {@inheritDoc} */
public int getRequiredArgsCount() {
return 1;
}
/** {@inheritDoc} */
public Property eval(Property[] args, PropertyInfo propInfo) throws PropertyException {
Numeric num = args[0].getNumeric();
if (num == null) {
throw new PropertyException("Non numeric operand to abs function");
}
// TODO: What if it has relative components (percent, table-col units)?
return (Property) NumericOp.abs(num);
}
}