mirror of https://github.com/apache/poi.git
(Should have been submitted with 693939) Fixing error value handling for numeric functions. Refactored hierarchy.
git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@693941 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Josh Micich
parent
ea1c2e1863
commit
cd0a88ea0a
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@ -1,98 +1,316 @@
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/*
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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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/*
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* Created on May 14, 2005
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*
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*/
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/* ====================================================================
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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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http://www.apache.org/licenses/LICENSE-2.0
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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.EvaluationException;
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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.OperandResolver;
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import org.apache.poi.hssf.record.formula.eval.ValueEval;
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import org.apache.poi.hssf.record.formula.eval.ValueEvalToNumericXlator;
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/**
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* @author Amol S. Deshmukh < amolweb at ya hoo dot com >
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*
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*/
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public abstract class NumericFunction implements Function {
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protected static final double E = Math.E;
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protected static final double PI = Math.PI;
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static final double ZERO = 0.0;
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static final double TEN = 10.0;
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static final double LOG_10_TO_BASE_e = Math.log(TEN);
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private static final ValueEvalToNumericXlator DEFAULT_NUM_XLATOR =
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new ValueEvalToNumericXlator((short) (
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ValueEvalToNumericXlator.BOOL_IS_PARSED
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| ValueEvalToNumericXlator.REF_BOOL_IS_PARSED
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| ValueEvalToNumericXlator.STRING_IS_PARSED
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| ValueEvalToNumericXlator.REF_STRING_IS_PARSED
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//| ValueEvalToNumericXlator.STRING_TO_BOOL_IS_PARSED
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//| ValueEvalToNumericXlator.REF_STRING_TO_BOOL_IS_PARSED
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//| ValueEvalToNumericXlator.STRING_IS_INVALID_VALUE
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//| ValueEvalToNumericXlator.REF_STRING_IS_INVALID_VALUE
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));
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private static final int DEFAULT_MAX_NUM_OPERANDS = 30;
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/**
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* this is the default impl of the factory(ish) method getXlator.
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* Subclasses can override this method
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* if they desire to return a different ValueEvalToNumericXlator instance
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* than the default.
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*/
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protected ValueEvalToNumericXlator getXlator() {
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return DEFAULT_NUM_XLATOR;
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protected static final double singleOperandEvaluate(Eval arg, int srcCellRow, short srcCellCol) throws EvaluationException {
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ValueEval ve = OperandResolver.getSingleValue(arg, srcCellRow, srcCellCol);
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double result = OperandResolver.coerceValueToDouble(ve);
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checkValue(result);
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return result;
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}
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protected ValueEval singleOperandEvaluate(Eval eval, int srcRow, short srcCol) {
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ValueEval retval;
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if (eval instanceof AreaEval) {
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AreaEval ae = (AreaEval) eval;
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if (ae.contains(srcRow, srcCol)) { // circular ref!
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retval = ErrorEval.CIRCULAR_REF_ERROR;
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private static final void checkValue(double result) throws EvaluationException {
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if (Double.isNaN(result) || Double.isInfinite(result)) {
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throw new EvaluationException(ErrorEval.NUM_ERROR);
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}
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else if (ae.isRow()) {
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if (ae.containsColumn(srcCol)) {
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ValueEval ve = ae.getValueAt(ae.getFirstRow(), srcCol);
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ve = getXlator().attemptXlateToNumeric(ve);
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retval = getXlator().attemptXlateToNumeric(ve);
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}
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else {
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retval = ErrorEval.VALUE_INVALID;
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}
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}
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else if (ae.isColumn()) {
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if (ae.containsRow(srcRow)) {
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ValueEval ve = ae.getValueAt(srcRow, ae.getFirstColumn());
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retval = getXlator().attemptXlateToNumeric(ve);
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}
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else {
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retval = ErrorEval.VALUE_INVALID;
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}
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}
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else {
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retval = ErrorEval.VALUE_INVALID;
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}
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}
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else {
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retval = getXlator().attemptXlateToNumeric((ValueEval) eval);
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}
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return retval;
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}
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public final Eval evaluate(Eval[] args, int srcCellRow, short srcCellCol) {
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double result;
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try {
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result = eval(args, srcCellRow, srcCellCol);
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checkValue(result);
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} catch (EvaluationException e) {
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return e.getErrorEval();
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}
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return new NumberEval(result);
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}
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protected abstract double eval(Eval[] args, int srcCellRow, short srcCellCol) throws EvaluationException;
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/* -------------------------------------------------------------------------- */
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// intermediate sub-classes (one-arg, two-arg and multi-arg
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public static abstract class OneArg extends NumericFunction {
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protected OneArg() {
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// no fields to initialise
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}
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protected final double eval(Eval[] args, int srcCellRow, short srcCellCol) throws EvaluationException {
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if (args.length != 1) {
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throw new EvaluationException(ErrorEval.VALUE_INVALID);
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}
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double d = singleOperandEvaluate(args[0], srcCellRow, srcCellCol);
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return evaluate(d);
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}
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protected abstract double evaluate(double d) throws EvaluationException;
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}
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public static abstract class TwoArg extends NumericFunction {
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protected TwoArg() {
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// no fields to initialise
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}
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protected final double eval(Eval[] args, int srcCellRow, short srcCellCol) throws EvaluationException {
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if (args.length != 2) {
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throw new EvaluationException(ErrorEval.VALUE_INVALID);
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}
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double d0 = singleOperandEvaluate(args[0], srcCellRow, srcCellCol);
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double d1 = singleOperandEvaluate(args[1], srcCellRow, srcCellCol);
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return evaluate(d0, d1);
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}
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protected abstract double evaluate(double d0, double d1) throws EvaluationException;
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}
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public static abstract class MultiArg extends NumericFunction {
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private final int _minArgs;
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private final int _maxArgs;
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protected MultiArg(int minArgs, int maxArgs) {
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_minArgs = minArgs;
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_maxArgs = maxArgs;
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}
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protected final double eval(Eval[] args, int srcCellRow, short srcCellCol) throws EvaluationException {
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int nArgs = args.length;
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if (nArgs < _minArgs || nArgs > _maxArgs) {
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throw new EvaluationException(ErrorEval.VALUE_INVALID);
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}
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double[] ds = new double[nArgs];
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for(int i=0; i<nArgs; i++) {
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ds[i] = singleOperandEvaluate(args[i], srcCellRow, srcCellCol);
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}
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return evaluate(ds);
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}
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protected abstract double evaluate(double[] ds) throws EvaluationException;
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}
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/* -------------------------------------------------------------------------- */
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public static final Function ABS = new OneArg() {
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protected double evaluate(double d) {
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return Math.abs(d);
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}
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};
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public static final Function ACOS = new OneArg() {
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protected double evaluate(double d) {
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return Math.acos(d);
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}
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};
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public static final Function ACOSH = new OneArg() {
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protected double evaluate(double d) {
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return MathX.acosh(d);
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}
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};
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public static final Function ASIN = new OneArg() {
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protected double evaluate(double d) {
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return Math.asin(d);
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}
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};
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public static final Function ASINH = new OneArg() {
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protected double evaluate(double d) {
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return MathX.asinh(d);
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}
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};
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public static final Function ATAN = new OneArg() {
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protected double evaluate(double d) {
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return Math.atan(d);
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}
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};
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public static final Function ATANH = new OneArg() {
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protected double evaluate(double d) {
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return MathX.atanh(d);
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}
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};
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public static final Function COS = new OneArg() {
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protected double evaluate(double d) {
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return Math.cos(d);
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}
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};
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public static final Function COSH = new OneArg() {
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protected double evaluate(double d) {
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return MathX.cosh(d);
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}
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};
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public static final Function DEGREES = new OneArg() {
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protected double evaluate(double d) {
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return Math.toDegrees(d);
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}
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};
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public static final Function DOLLAR = new OneArg() {
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protected double evaluate(double d) {
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return d;
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}
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};
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public static final Function EXP = new OneArg() {
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protected double evaluate(double d) {
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return Math.pow(Math.E, d);
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}
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};
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public static final Function FACT = new OneArg() {
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protected double evaluate(double d) {
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return MathX.factorial((int)d);
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}
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};
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public static final Function INT = new OneArg() {
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protected double evaluate(double d) {
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return Math.round(d-0.5);
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}
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};
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public static final Function LN = new OneArg() {
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protected double evaluate(double d) {
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return Math.log(d);
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}
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};
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public static final Function LOG10 = new OneArg() {
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protected double evaluate(double d) {
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return Math.log(d) / LOG_10_TO_BASE_e;
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}
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};
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public static final Function RADIANS = new OneArg() {
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protected double evaluate(double d) {
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return Math.toRadians(d);
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}
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};
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public static final Function SIGN = new OneArg() {
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protected double evaluate(double d) {
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return MathX.sign(d);
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}
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};
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public static final Function SIN = new OneArg() {
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protected double evaluate(double d) {
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return Math.sin(d);
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}
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};
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public static final Function SINH = new OneArg() {
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protected double evaluate(double d) {
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return MathX.sinh(d);
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}
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};
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public static final Function SQRT = new OneArg() {
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protected double evaluate(double d) {
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return Math.sqrt(d);
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}
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};
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public static final Function TAN = new OneArg() {
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protected double evaluate(double d) {
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return Math.tan(d);
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}
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};
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public static final Function TANH = new OneArg() {
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protected double evaluate(double d) {
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return MathX.tanh(d);
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}
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};
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/* -------------------------------------------------------------------------- */
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public static final Function ATAN2 = new TwoArg() {
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protected double evaluate(double d0, double d1) throws EvaluationException {
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if (d0 == ZERO && d1 == ZERO) {
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throw new EvaluationException(ErrorEval.DIV_ZERO);
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}
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return Math.atan2(d1, d0);
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}
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};
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public static final Function CEILING = new TwoArg() {
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protected double evaluate(double d0, double d1) {
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return MathX.ceiling(d0, d1);
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}
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};
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public static final Function COMBIN = new TwoArg() {
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protected double evaluate(double d0, double d1) throws EvaluationException {
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if (d0 > Integer.MAX_VALUE || d1 > Integer.MAX_VALUE) {
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throw new EvaluationException(ErrorEval.NUM_ERROR);
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}
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return MathX.nChooseK((int) d0, (int) d1);
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}
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};
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public static final Function FLOOR = new TwoArg() {
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protected double evaluate(double d0, double d1) throws EvaluationException {
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if (d1 == ZERO) {
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if (d0 == ZERO) {
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return ZERO;
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}
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throw new EvaluationException(ErrorEval.DIV_ZERO);
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}
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return MathX.floor(d0, d1);
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}
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};
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public static final Function MOD = new TwoArg() {
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protected double evaluate(double d0, double d1) throws EvaluationException {
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if (d1 == ZERO) {
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throw new EvaluationException(ErrorEval.DIV_ZERO);
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}
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return MathX.mod(d0, d1);
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}
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};
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public static final Function POWER = new TwoArg() {
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protected double evaluate(double d0, double d1) {
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return Math.pow(d0, d1);
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}
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};
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public static final Function ROUND = new TwoArg() {
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protected double evaluate(double d0, double d1) {
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return MathX.round(d0, (int)d1);
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}
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};
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public static final Function ROUNDDOWN = new TwoArg() {
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protected double evaluate(double d0, double d1) {
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return MathX.roundDown(d0, (int)d1);
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}
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};
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public static final Function ROUNDUP = new TwoArg() {
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protected double evaluate(double d0, double d1) {
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return MathX.roundUp(d0, (int)d1);
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}
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};
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/* -------------------------------------------------------------------------- */
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public static final Function LOG = new MultiArg(1,2) {
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protected double evaluate(double[] ds) {
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double logE = Math.log(ds[0]);
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if (ds.length == 1) {
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return logE / LOG_10_TO_BASE_e;
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}
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double base = ds[1];
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if (base == Math.E) {
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return logE;
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}
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return logE / Math.log(base);
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}
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};
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}
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