60 lines
1.9 KiB
Java
60 lines
1.9 KiB
Java
/*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The ASF licenses this file to You under the Apache License, Version 2.0
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* (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.apache.poi.hssf.record.formula.functions;
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import org.apache.poi.hssf.record.formula.eval.AreaEval;
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import org.apache.poi.hssf.record.formula.eval.ErrorEval;
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import org.apache.poi.hssf.record.formula.eval.Eval;
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import org.apache.poi.hssf.record.formula.eval.NumberEval;
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import org.apache.poi.hssf.record.formula.eval.RefEval;
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/**
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* Implementation for Excel COLUMNS function.
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*
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* @author Josh Micich
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*/
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public final class Columns implements Function {
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public Eval evaluate(Eval[] args, int srcCellRow, short srcCellCol) {
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switch(args.length) {
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case 1:
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// expected
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break;
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case 0:
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// too few arguments
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return ErrorEval.VALUE_INVALID;
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default:
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// too many arguments
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return ErrorEval.VALUE_INVALID;
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}
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Eval firstArg = args[0];
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int result;
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if (firstArg instanceof AreaEval) {
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AreaEval ae = (AreaEval) firstArg;
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result = ae.getLastColumn() - ae.getFirstColumn() + 1;
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} else if (firstArg instanceof RefEval) {
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result = 1;
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} else { // anything else is not valid argument
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return ErrorEval.VALUE_INVALID;
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}
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return new NumberEval(result);
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}
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}
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