/* Generated By:JJTree: Do not edit this line. ASTAtIfError.java Version 4.3 */
/* JavaCCOptions:MULTI=true,NODE_USES_PARSER=true,VISITOR=false,TRACK_TOKENS=false,NODE_PREFIX=AST,NODE_EXTENDS=,NODE_FACTORY=,SUPPORT_CLASS_VISIBILITY_PUBLIC=true */
/*
* © Copyright FOCONIS AG, 2014
*
* 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.openntf.formula.ast;
import java.util.Set;
import org.openntf.formula.FormulaContext;
import org.openntf.formula.FormulaReturnException;
import org.openntf.formula.ValueHolder;
import org.openntf.formula.ValueHolder.DataType;
import org.openntf.formula.parse.AtFormulaParserImpl;
/**
* Implements the {@literal @}IfError function (this is rarely used)
*
* @author Roland Praml, Foconis AG
*
*/
public class ASTAtIfError extends SimpleNode {
public ASTAtIfError(final AtFormulaParserImpl p, final int id) {
super(p, id);
}
/**
* {@literal @}IfError detects the error of the first valueHolder and returns the second one
*/
@Override
public ValueHolder evaluate(final FormulaContext ctx) throws FormulaReturnException {
ValueHolder vh = children[0].evaluate(ctx);
if (vh.dataType == DataType.ERROR && children.length == 2) {
return children[1].evaluate(ctx);
}
return ValueHolder.valueDefault();
}
@Override
protected void analyzeThis(final Set<String> readFields, final Set<String> modifiedFields, final Set<String> variables,
final Set<String> functions) {
functions.add("@iferror");
}
}
/* JavaCC - OriginalChecksum=776aeb60d75aec0e2d82f5d09d2401a6 (do not edit this line) */