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- /* ====================================================================
- 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.
- ==================================================================== */
-
- package org.apache.poi.ss.formula.atp;
-
- import java.util.ArrayList;
- import java.util.Calendar;
- import java.util.List;
-
- import org.apache.poi.ss.formula.eval.AreaEvalBase;
- import org.apache.poi.ss.formula.eval.EvaluationException;
- import org.apache.poi.ss.formula.eval.OperandResolver;
- import org.apache.poi.ss.formula.eval.StringEval;
- import org.apache.poi.ss.formula.eval.ValueEval;
- import org.apache.poi.ss.usermodel.DateUtil;
-
- /**
- * Evaluator for formula arguments.
- *
- * @author jfaenomoto@gmail.com
- */
- final class ArgumentsEvaluator {
-
- public static final ArgumentsEvaluator instance = new ArgumentsEvaluator();
-
- private ArgumentsEvaluator() {
- // enforces singleton
- }
-
- /**
- * Evaluate a generic {@link ValueEval} argument to a double value that represents a date in POI.
- *
- * @param arg {@link ValueEval} an argument.
- * @param srcCellRow number cell row.
- * @param srcCellCol number cell column.
- * @return a double representing a date in POI.
- * @throws EvaluationException exception upon argument evaluation.
- */
- public double evaluateDateArg(ValueEval arg, int srcCellRow, int srcCellCol) throws EvaluationException {
- ValueEval ve = OperandResolver.getSingleValue(arg, srcCellRow, (short) srcCellCol);
-
- if (ve instanceof StringEval) {
- String strVal = ((StringEval) ve).getStringValue();
- Double dVal = OperandResolver.parseDouble(strVal);
- if (dVal != null) {
- return dVal.doubleValue();
- }
- Calendar date = DateParser.parseDate(strVal);
- return DateUtil.getExcelDate(date, false);
- }
- return OperandResolver.coerceValueToDouble(ve);
- }
-
- /**
- * Evaluate a generic {@link ValueEval} argument to an array of double values that represents dates in POI.
- *
- * @param arg {@link ValueEval} an argument.
- * @param srcCellRow number cell row.
- * @param srcCellCol number cell column.
- * @return an array of doubles representing dates in POI.
- * @throws EvaluationException exception upon argument evaluation.
- */
- public double[] evaluateDatesArg(ValueEval arg, int srcCellRow, int srcCellCol) throws EvaluationException {
- if (arg == null) {
- return new double[0];
- }
-
- if (arg instanceof StringEval) {
- return new double[]{ evaluateDateArg(arg, srcCellRow, srcCellCol) };
- } else if (arg instanceof AreaEvalBase) {
- List<Double> valuesList = new ArrayList<Double>();
- AreaEvalBase area = (AreaEvalBase) arg;
- for (int i = area.getFirstRow(); i <= area.getLastRow(); i++) {
- for (int j = area.getFirstColumn(); j <= area.getLastColumn(); j++) {
- // getValue() is replaced with getAbsoluteValue() because loop variables i, j are
- // absolute indexes values, but getValue() works with relative indexes values
- valuesList.add(evaluateDateArg(area.getAbsoluteValue(i, j), i, j));
- }
- }
- double[] values = new double[valuesList.size()];
- for (int i = 0; i < valuesList.size(); i++) {
- values[i] = valuesList.get(i).doubleValue();
- }
- return values;
- }
- return new double[]{ OperandResolver.coerceValueToDouble(arg) };
- }
-
- /**
- * Evaluate a generic {@link ValueEval} argument to a double value.
- *
- * @param arg {@link ValueEval} an argument.
- * @param srcCellRow number cell row.
- * @param srcCellCol number cell column.
- * @return a double value.
- * @throws EvaluationException exception upon argument evaluation.
- */
- public double evaluateNumberArg(ValueEval arg, int srcCellRow, int srcCellCol) throws EvaluationException {
- if (arg == null) {
- return 0f;
- }
-
- return OperandResolver.coerceValueToDouble(arg);
- }
- }
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