/* ==================================================================== 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. ==================================================================== */ using HH.WMS.Utils.NPOI.SS.Formula.Eval; using System; namespace HH.WMS.Utils.NPOI.SS.Formula.Functions { /** * Implementation for the function COUNTBLANK *

* Syntax: COUNTBLANK ( range ) * * *
range is the range of cells to count blanks
*

* * @author Mads Mohr Christensen */ public class Countblank : Fixed1ArgFunction { public override ValueEval Evaluate(int srcRowIndex, int srcColumnIndex, ValueEval arg0) { double result; if (arg0 is RefEval) { result = CountUtils.CountMatchingCell((RefEval)arg0, predicate); } else if (arg0 is TwoDEval) { result = CountUtils.CountMatchingCellsInArea((TwoDEval)arg0, predicate); } else { throw new ArgumentException("Bad range arg type (" + arg0.GetType().Name + ")"); } return new NumberEval(result); } private static I_MatchPredicate predicate = new BlankPredicate(); private class BlankPredicate : I_MatchPredicate { #region I_MatchPredicate 成员 public bool Matches(ValueEval valueEval) { return valueEval == BlankEval.instance; } #endregion } } }