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git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@1716057 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Javen O'Neal
parent
58718f7245
commit
d58342dd9f
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@ -27,302 +27,302 @@ import java.util.regex.Pattern;
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*/
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public final class OperandResolver {
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// Based on regular expression defined in JavaDoc at {@link java.lang.Double#valueOf}
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// modified to remove support for NaN, Infinity, Hexadecimal support and floating type suffixes
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private static final String Digits = "(\\p{Digit}+)";
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private static final String Exp = "[eE][+-]?"+Digits;
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private static final String fpRegex =
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("[\\x00-\\x20]*" +
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"[+-]?(" +
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"((("+Digits+"(\\.)?("+Digits+"?)("+Exp+")?)|"+
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"(\\.("+Digits+")("+Exp+")?))))"+
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"[\\x00-\\x20]*");
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private OperandResolver() {
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// no instances of this class
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}
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// Based on regular expression defined in JavaDoc at {@link java.lang.Double#valueOf}
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// modified to remove support for NaN, Infinity, Hexadecimal support and floating type suffixes
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private static final String Digits = "(\\p{Digit}+)";
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private static final String Exp = "[eE][+-]?"+Digits;
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private static final String fpRegex =
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("[\\x00-\\x20]*" +
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"[+-]?(" +
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"((("+Digits+"(\\.)?("+Digits+"?)("+Exp+")?)|"+
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"(\\.("+Digits+")("+Exp+")?))))"+
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"[\\x00-\\x20]*");
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private OperandResolver() {
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// no instances of this class
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}
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/**
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* Retrieves a single value from a variety of different argument types according to standard
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* Excel rules. Does not perform any type conversion.
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* @param arg the evaluated argument as passed to the function or operator.
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* @param srcCellRow used when arg is a single column AreaRef
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* @param srcCellCol used when arg is a single row AreaRef
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* @return a <tt>NumberEval</tt>, <tt>StringEval</tt>, <tt>BoolEval</tt> or <tt>BlankEval</tt>.
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* Never <code>null</code> or <tt>ErrorEval</tt>.
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* @throws EvaluationException(#VALUE!) if srcCellRow or srcCellCol do not properly index into
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* an AreaEval. If the actual value retrieved is an ErrorEval, a corresponding
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* EvaluationException is thrown.
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*/
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public static ValueEval getSingleValue(ValueEval arg, int srcCellRow, int srcCellCol)
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throws EvaluationException {
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final ValueEval result;
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if (arg instanceof RefEval) {
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result = chooseSingleElementFromRef((RefEval) arg);
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} else if (arg instanceof AreaEval) {
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result = chooseSingleElementFromArea((AreaEval) arg, srcCellRow, srcCellCol);
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} else {
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result = arg;
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}
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if (result instanceof ErrorEval) {
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throw new EvaluationException((ErrorEval) result);
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}
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return result;
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}
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/**
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* Retrieves a single value from a variety of different argument types according to standard
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* Excel rules. Does not perform any type conversion.
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* @param arg the evaluated argument as passed to the function or operator.
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* @param srcCellRow used when arg is a single column AreaRef
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* @param srcCellCol used when arg is a single row AreaRef
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* @return a <tt>NumberEval</tt>, <tt>StringEval</tt>, <tt>BoolEval</tt> or <tt>BlankEval</tt>.
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* Never <code>null</code> or <tt>ErrorEval</tt>.
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* @throws EvaluationException(#VALUE!) if srcCellRow or srcCellCol do not properly index into
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* an AreaEval. If the actual value retrieved is an ErrorEval, a corresponding
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* EvaluationException is thrown.
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*/
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public static ValueEval getSingleValue(ValueEval arg, int srcCellRow, int srcCellCol)
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throws EvaluationException {
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final ValueEval result;
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if (arg instanceof RefEval) {
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result = chooseSingleElementFromRef((RefEval) arg);
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} else if (arg instanceof AreaEval) {
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result = chooseSingleElementFromArea((AreaEval) arg, srcCellRow, srcCellCol);
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} else {
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result = arg;
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}
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if (result instanceof ErrorEval) {
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throw new EvaluationException((ErrorEval) result);
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}
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return result;
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}
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/**
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* Implements (some perhaps not well known) Excel functionality to select a single cell from an
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* area depending on the coordinates of the calling cell. Here is an example demonstrating
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* both selection from a single row area and a single column area in the same formula.
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*
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* <table border="1" cellpadding="1" cellspacing="1" summary="sample spreadsheet">
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* <tr><th> </th><th> A </th><th> B </th><th> C </th><th> D </th></tr>
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* <tr><th>1</th><td>15</td><td>20</td><td>25</td><td> </td></tr>
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* <tr><th>2</th><td> </td><td> </td><td> </td><td>200</td></tr>
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* <tr><th>3</th><td> </td><td> </td><td> </td><td>300</td></tr>
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* <tr><th>3</th><td> </td><td> </td><td> </td><td>400</td></tr>
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* </table>
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*
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* If the formula "=1000+A1:B1+D2:D3" is put into the 9 cells from A2 to C4, the spreadsheet
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* will look like this:
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*
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* <table border="1" cellpadding="1" cellspacing="1" summary="sample spreadsheet">
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* <tr><th> </th><th> A </th><th> B </th><th> C </th><th> D </th></tr>
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* <tr><th>1</th><td>15</td><td>20</td><td>25</td><td> </td></tr>
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* <tr><th>2</th><td>1215</td><td>1220</td><td>#VALUE!</td><td>200</td></tr>
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* <tr><th>3</th><td>1315</td><td>1320</td><td>#VALUE!</td><td>300</td></tr>
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* <tr><th>4</th><td>#VALUE!</td><td>#VALUE!</td><td>#VALUE!</td><td>400</td></tr>
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* </table>
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*
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* Note that the row area (A1:B1) does not include column C and the column area (D2:D3) does
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* not include row 4, so the values in C1(=25) and D4(=400) are not accessible to the formula
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* as written, but in the 4 cells A2:B3, the row and column selection works ok.<p/>
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*
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* The same concept is extended to references across sheets, such that even multi-row,
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* multi-column areas can be useful.<p/>
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*
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* Of course with carefully (or carelessly) chosen parameters, cyclic references can occur and
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* hence this method <b>can</b> throw a 'circular reference' EvaluationException. Note that
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* this method does not attempt to detect cycles. Every cell in the specified Area <tt>ae</tt>
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* has already been evaluated prior to this method call. Any cell (or cell<b>s</b>) part of
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* <tt>ae</tt> that would incur a cyclic reference error if selected by this method, will
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* already have the value <t>ErrorEval.CIRCULAR_REF_ERROR</tt> upon entry to this method. It
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* is assumed logic exists elsewhere to produce this behaviour.
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*
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* @return whatever the selected cell's evaluated value is. Never <code>null</code>. Never
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* <tt>ErrorEval</tt>.
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* @throws EvaluationException if there is a problem with indexing into the area, or if the
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* evaluated cell has an error.
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*/
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public static ValueEval chooseSingleElementFromArea(AreaEval ae,
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int srcCellRow, int srcCellCol) throws EvaluationException {
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ValueEval result = chooseSingleElementFromAreaInternal(ae, srcCellRow, srcCellCol);
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if (result instanceof ErrorEval) {
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throw new EvaluationException((ErrorEval) result);
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}
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return result;
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}
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/**
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* Implements (some perhaps not well known) Excel functionality to select a single cell from an
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* area depending on the coordinates of the calling cell. Here is an example demonstrating
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* both selection from a single row area and a single column area in the same formula.
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*
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* <table border="1" cellpadding="1" cellspacing="1" summary="sample spreadsheet">
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* <tr><th> </th><th> A </th><th> B </th><th> C </th><th> D </th></tr>
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* <tr><th>1</th><td>15</td><td>20</td><td>25</td><td> </td></tr>
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* <tr><th>2</th><td> </td><td> </td><td> </td><td>200</td></tr>
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* <tr><th>3</th><td> </td><td> </td><td> </td><td>300</td></tr>
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* <tr><th>3</th><td> </td><td> </td><td> </td><td>400</td></tr>
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* </table>
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*
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* If the formula "=1000+A1:B1+D2:D3" is put into the 9 cells from A2 to C4, the spreadsheet
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* will look like this:
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*
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* <table border="1" cellpadding="1" cellspacing="1" summary="sample spreadsheet">
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* <tr><th> </th><th> A </th><th> B </th><th> C </th><th> D </th></tr>
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* <tr><th>1</th><td>15</td><td>20</td><td>25</td><td> </td></tr>
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* <tr><th>2</th><td>1215</td><td>1220</td><td>#VALUE!</td><td>200</td></tr>
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* <tr><th>3</th><td>1315</td><td>1320</td><td>#VALUE!</td><td>300</td></tr>
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* <tr><th>4</th><td>#VALUE!</td><td>#VALUE!</td><td>#VALUE!</td><td>400</td></tr>
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* </table>
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*
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* Note that the row area (A1:B1) does not include column C and the column area (D2:D3) does
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* not include row 4, so the values in C1(=25) and D4(=400) are not accessible to the formula
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* as written, but in the 4 cells A2:B3, the row and column selection works ok.<p/>
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*
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* The same concept is extended to references across sheets, such that even multi-row,
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* multi-column areas can be useful.<p/>
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*
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* Of course with carefully (or carelessly) chosen parameters, cyclic references can occur and
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* hence this method <b>can</b> throw a 'circular reference' EvaluationException. Note that
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* this method does not attempt to detect cycles. Every cell in the specified Area <tt>ae</tt>
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* has already been evaluated prior to this method call. Any cell (or cell<b>s</b>) part of
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* <tt>ae</tt> that would incur a cyclic reference error if selected by this method, will
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* already have the value <t>ErrorEval.CIRCULAR_REF_ERROR</tt> upon entry to this method. It
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* is assumed logic exists elsewhere to produce this behaviour.
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*
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* @return whatever the selected cell's evaluated value is. Never <code>null</code>. Never
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* <tt>ErrorEval</tt>.
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* @throws EvaluationException if there is a problem with indexing into the area, or if the
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* evaluated cell has an error.
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*/
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public static ValueEval chooseSingleElementFromArea(AreaEval ae,
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int srcCellRow, int srcCellCol) throws EvaluationException {
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ValueEval result = chooseSingleElementFromAreaInternal(ae, srcCellRow, srcCellCol);
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if (result instanceof ErrorEval) {
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throw new EvaluationException((ErrorEval) result);
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}
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return result;
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}
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/**
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* @return possibly <tt>ErrorEval</tt>, and <code>null</code>
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*/
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private static ValueEval chooseSingleElementFromAreaInternal(AreaEval ae,
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int srcCellRow, int srcCellCol) throws EvaluationException {
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/**
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* @return possibly <tt>ErrorEval</tt>, and <code>null</code>
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*/
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private static ValueEval chooseSingleElementFromAreaInternal(AreaEval ae,
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int srcCellRow, int srcCellCol) throws EvaluationException {
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// if(false) {
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// // this is too simplistic
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// if(ae.containsRow(srcCellRow) && ae.containsColumn(srcCellCol)) {
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// throw new EvaluationException(ErrorEval.CIRCULAR_REF_ERROR);
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// }
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// /*
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// Circular references are not dealt with directly here, but it is worth noting some issues.
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// if(false) {
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// // this is too simplistic
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// if(ae.containsRow(srcCellRow) && ae.containsColumn(srcCellCol)) {
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// throw new EvaluationException(ErrorEval.CIRCULAR_REF_ERROR);
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// }
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// /*
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// Circular references are not dealt with directly here, but it is worth noting some issues.
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//
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// ANY one of the return statements in this method could return a cell that is identical
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// to the one immediately being evaluated. The evaluating cell is identified by srcCellRow,
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// srcCellRow AND sheet. The sheet is not available in any nearby calling method, so that's
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// one reason why circular references are not easy to detect here. (The sheet of the returned
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// cell can be obtained from ae if it is an Area3DEval.)
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// ANY one of the return statements in this method could return a cell that is identical
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// to the one immediately being evaluated. The evaluating cell is identified by srcCellRow,
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// srcCellRow AND sheet. The sheet is not available in any nearby calling method, so that's
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// one reason why circular references are not easy to detect here. (The sheet of the returned
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// cell can be obtained from ae if it is an Area3DEval.)
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//
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// Another reason there's little value in attempting to detect circular references here is
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// that only direct circular references could be detected. If the cycle involved two or more
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// cells this method could not detect it.
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// Another reason there's little value in attempting to detect circular references here is
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// that only direct circular references could be detected. If the cycle involved two or more
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// cells this method could not detect it.
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//
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// Logic to detect evaluation cycles of all kinds has been coded in EvaluationCycleDetector
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// (and FormulaEvaluator).
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// */
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// }
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// Logic to detect evaluation cycles of all kinds has been coded in EvaluationCycleDetector
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// (and FormulaEvaluator).
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// */
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// }
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if (ae.isColumn()) {
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if(ae.isRow()) {
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return ae.getRelativeValue(0, 0);
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}
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if(!ae.containsRow(srcCellRow)) {
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throw EvaluationException.invalidValue();
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}
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return ae.getAbsoluteValue(srcCellRow, ae.getFirstColumn());
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}
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if(!ae.isRow()) {
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// multi-column, multi-row area
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if(ae.containsRow(srcCellRow) && ae.containsColumn(srcCellCol)) {
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return ae.getAbsoluteValue(ae.getFirstRow(), ae.getFirstColumn());
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}
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throw EvaluationException.invalidValue();
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}
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if(!ae.containsColumn(srcCellCol)) {
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throw EvaluationException.invalidValue();
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}
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return ae.getAbsoluteValue(ae.getFirstRow(), srcCellCol);
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}
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private static ValueEval chooseSingleElementFromRef(RefEval ref) {
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return ref.getInnerValueEval( ref.getFirstSheetIndex() );
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}
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if (ae.isColumn()) {
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if(ae.isRow()) {
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return ae.getRelativeValue(0, 0);
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}
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if(!ae.containsRow(srcCellRow)) {
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throw EvaluationException.invalidValue();
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}
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return ae.getAbsoluteValue(srcCellRow, ae.getFirstColumn());
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}
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if(!ae.isRow()) {
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// multi-column, multi-row area
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if(ae.containsRow(srcCellRow) && ae.containsColumn(srcCellCol)) {
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return ae.getAbsoluteValue(ae.getFirstRow(), ae.getFirstColumn());
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}
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throw EvaluationException.invalidValue();
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}
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if(!ae.containsColumn(srcCellCol)) {
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throw EvaluationException.invalidValue();
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}
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return ae.getAbsoluteValue(ae.getFirstRow(), srcCellCol);
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}
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private static ValueEval chooseSingleElementFromRef(RefEval ref) {
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return ref.getInnerValueEval( ref.getFirstSheetIndex() );
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}
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/**
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* Applies some conversion rules if the supplied value is not already an integer.<br/>
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* Value is first coerced to a <tt>double</tt> ( See <tt>coerceValueToDouble()</tt> ).
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* Note - <tt>BlankEval</tt> is converted to <code>0</code>.<p/>
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*
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* Excel typically converts doubles to integers by truncating toward negative infinity.<br/>
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* The equivalent java code is:<br/>
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* <code>return (int)Math.floor(d);</code><br/>
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* <b>not</b>:<br/>
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* <code>return (int)d; // wrong - rounds toward zero</code>
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*
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*/
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public static int coerceValueToInt(ValueEval ev) throws EvaluationException {
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if (ev == BlankEval.instance) {
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return 0;
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}
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double d = coerceValueToDouble(ev);
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// Note - the standard java type conversion from double to int truncates toward zero.
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// but Math.floor() truncates toward negative infinity
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return (int)Math.floor(d);
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}
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/**
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* Applies some conversion rules if the supplied value is not already an integer.<br/>
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* Value is first coerced to a <tt>double</tt> ( See <tt>coerceValueToDouble()</tt> ).
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* Note - <tt>BlankEval</tt> is converted to <code>0</code>.<p/>
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*
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* Excel typically converts doubles to integers by truncating toward negative infinity.<br/>
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* The equivalent java code is:<br/>
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* <code>return (int)Math.floor(d);</code><br/>
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* <b>not</b>:<br/>
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* <code>return (int)d; // wrong - rounds toward zero</code>
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*
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*/
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public static int coerceValueToInt(ValueEval ev) throws EvaluationException {
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if (ev == BlankEval.instance) {
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return 0;
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}
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double d = coerceValueToDouble(ev);
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// Note - the standard java type conversion from double to int truncates toward zero.
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// but Math.floor() truncates toward negative infinity
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return (int)Math.floor(d);
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}
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/**
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* Applies some conversion rules if the supplied value is not already a number.
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* Note - <tt>BlankEval</tt> is converted to {@link NumberEval#ZERO}.
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* @param ev must be a {@link NumberEval}, {@link StringEval}, {@link BoolEval} or
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* {@link BlankEval}
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* @return actual, parsed or interpreted double value (respectively).
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* @throws EvaluationException(#VALUE!) only if a StringEval is supplied and cannot be parsed
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* as a double (See <tt>parseDouble()</tt> for allowable formats).
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* @throws RuntimeException if the supplied parameter is not {@link NumberEval},
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* {@link StringEval}, {@link BoolEval} or {@link BlankEval}
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*/
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public static double coerceValueToDouble(ValueEval ev) throws EvaluationException {
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/**
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* Applies some conversion rules if the supplied value is not already a number.
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* Note - <tt>BlankEval</tt> is converted to {@link NumberEval#ZERO}.
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* @param ev must be a {@link NumberEval}, {@link StringEval}, {@link BoolEval} or
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* {@link BlankEval}
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* @return actual, parsed or interpreted double value (respectively).
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* @throws EvaluationException(#VALUE!) only if a StringEval is supplied and cannot be parsed
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* as a double (See <tt>parseDouble()</tt> for allowable formats).
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* @throws RuntimeException if the supplied parameter is not {@link NumberEval},
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* {@link StringEval}, {@link BoolEval} or {@link BlankEval}
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*/
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public static double coerceValueToDouble(ValueEval ev) throws EvaluationException {
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if (ev == BlankEval.instance) {
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return 0.0;
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}
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if (ev instanceof NumericValueEval) {
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// this also handles booleans
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return ((NumericValueEval)ev).getNumberValue();
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}
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if (ev instanceof StringEval) {
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Double dd = parseDouble(((StringEval) ev).getStringValue());
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if (dd == null) {
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throw EvaluationException.invalidValue();
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}
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return dd.doubleValue();
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}
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throw new RuntimeException("Unexpected arg eval type (" + ev.getClass().getName() + ")");
|
||||
}
|
||||
if (ev == BlankEval.instance) {
|
||||
return 0.0;
|
||||
}
|
||||
if (ev instanceof NumericValueEval) {
|
||||
// this also handles booleans
|
||||
return ((NumericValueEval)ev).getNumberValue();
|
||||
}
|
||||
if (ev instanceof StringEval) {
|
||||
Double dd = parseDouble(((StringEval) ev).getStringValue());
|
||||
if (dd == null) {
|
||||
throw EvaluationException.invalidValue();
|
||||
}
|
||||
return dd.doubleValue();
|
||||
}
|
||||
throw new RuntimeException("Unexpected arg eval type (" + ev.getClass().getName() + ")");
|
||||
}
|
||||
|
||||
/**
|
||||
* Converts a string to a double using standard rules that Excel would use.<br/>
|
||||
* Tolerates leading and trailing spaces, <p/>
|
||||
*
|
||||
* Doesn't support currency prefixes, commas, percentage signs or arithmetic operations strings.
|
||||
*
|
||||
* Some examples:<br/>
|
||||
* " 123 " -> 123.0<br/>
|
||||
* ".123" -> 0.123<br/>
|
||||
* "1E4" -> 1000<br/>
|
||||
* "-123" -> -123.0<br/>
|
||||
* These not supported yet:<br/>
|
||||
* " $ 1,000.00 " -> 1000.0<br/>
|
||||
* "$1.25E4" -> 12500.0<br/>
|
||||
* "5**2" -> 500<br/>
|
||||
* "250%" -> 2.5<br/>
|
||||
*
|
||||
* @return <code>null</code> if the specified text cannot be parsed as a number
|
||||
*/
|
||||
public static Double parseDouble(String pText) {
|
||||
|
||||
if (Pattern.matches(fpRegex, pText))
|
||||
try {
|
||||
return Double.parseDouble(pText);
|
||||
} catch (NumberFormatException e) {
|
||||
return null;
|
||||
}
|
||||
else {
|
||||
return null;
|
||||
}
|
||||
|
||||
}
|
||||
/**
|
||||
* Converts a string to a double using standard rules that Excel would use.<br/>
|
||||
* Tolerates leading and trailing spaces, <p/>
|
||||
*
|
||||
* Doesn't support currency prefixes, commas, percentage signs or arithmetic operations strings.
|
||||
*
|
||||
* Some examples:<br/>
|
||||
* " 123 " -> 123.0<br/>
|
||||
* ".123" -> 0.123<br/>
|
||||
* "1E4" -> 1000<br/>
|
||||
* "-123" -> -123.0<br/>
|
||||
* These not supported yet:<br/>
|
||||
* " $ 1,000.00 " -> 1000.0<br/>
|
||||
* "$1.25E4" -> 12500.0<br/>
|
||||
* "5**2" -> 500<br/>
|
||||
* "250%" -> 2.5<br/>
|
||||
*
|
||||
* @return <code>null</code> if the specified text cannot be parsed as a number
|
||||
*/
|
||||
public static Double parseDouble(String pText) {
|
||||
|
||||
if (Pattern.matches(fpRegex, pText))
|
||||
try {
|
||||
return Double.parseDouble(pText);
|
||||
} catch (NumberFormatException e) {
|
||||
return null;
|
||||
}
|
||||
else {
|
||||
return null;
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
/**
|
||||
* @param ve must be a <tt>NumberEval</tt>, <tt>StringEval</tt>, <tt>BoolEval</tt>, or <tt>BlankEval</tt>
|
||||
* @return the converted string value. never <code>null</code>
|
||||
*/
|
||||
public static String coerceValueToString(ValueEval ve) {
|
||||
if (ve instanceof StringValueEval) {
|
||||
StringValueEval sve = (StringValueEval) ve;
|
||||
return sve.getStringValue();
|
||||
}
|
||||
if (ve == BlankEval.instance) {
|
||||
return "";
|
||||
}
|
||||
throw new IllegalArgumentException("Unexpected eval class (" + ve.getClass().getName() + ")");
|
||||
}
|
||||
/**
|
||||
* @param ve must be a <tt>NumberEval</tt>, <tt>StringEval</tt>, <tt>BoolEval</tt>, or <tt>BlankEval</tt>
|
||||
* @return the converted string value. never <code>null</code>
|
||||
*/
|
||||
public static String coerceValueToString(ValueEval ve) {
|
||||
if (ve instanceof StringValueEval) {
|
||||
StringValueEval sve = (StringValueEval) ve;
|
||||
return sve.getStringValue();
|
||||
}
|
||||
if (ve == BlankEval.instance) {
|
||||
return "";
|
||||
}
|
||||
throw new IllegalArgumentException("Unexpected eval class (" + ve.getClass().getName() + ")");
|
||||
}
|
||||
|
||||
/**
|
||||
* @return <code>null</code> to represent blank values
|
||||
* @throws EvaluationException if ve is an ErrorEval, or if a string value cannot be converted
|
||||
*/
|
||||
public static Boolean coerceValueToBoolean(ValueEval ve, boolean stringsAreBlanks) throws EvaluationException {
|
||||
/**
|
||||
* @return <code>null</code> to represent blank values
|
||||
* @throws EvaluationException if ve is an ErrorEval, or if a string value cannot be converted
|
||||
*/
|
||||
public static Boolean coerceValueToBoolean(ValueEval ve, boolean stringsAreBlanks) throws EvaluationException {
|
||||
|
||||
if (ve == null || ve == BlankEval.instance) {
|
||||
// TODO - remove 've == null' condition once AreaEval is fixed
|
||||
return null;
|
||||
}
|
||||
if (ve instanceof BoolEval) {
|
||||
return Boolean.valueOf(((BoolEval) ve).getBooleanValue());
|
||||
}
|
||||
if (ve == null || ve == BlankEval.instance) {
|
||||
// TODO - remove 've == null' condition once AreaEval is fixed
|
||||
return null;
|
||||
}
|
||||
if (ve instanceof BoolEval) {
|
||||
return Boolean.valueOf(((BoolEval) ve).getBooleanValue());
|
||||
}
|
||||
|
||||
if (ve == BlankEval.instance) {
|
||||
return null;
|
||||
}
|
||||
if (ve == BlankEval.instance) {
|
||||
return null;
|
||||
}
|
||||
|
||||
if (ve instanceof StringEval) {
|
||||
if (stringsAreBlanks) {
|
||||
return null;
|
||||
}
|
||||
String str = ((StringEval) ve).getStringValue();
|
||||
if (str.equalsIgnoreCase("true")) {
|
||||
return Boolean.TRUE;
|
||||
}
|
||||
if (str.equalsIgnoreCase("false")) {
|
||||
return Boolean.FALSE;
|
||||
}
|
||||
// else - string cannot be converted to boolean
|
||||
throw new EvaluationException(ErrorEval.VALUE_INVALID);
|
||||
}
|
||||
if (ve instanceof StringEval) {
|
||||
if (stringsAreBlanks) {
|
||||
return null;
|
||||
}
|
||||
String str = ((StringEval) ve).getStringValue();
|
||||
if (str.equalsIgnoreCase("true")) {
|
||||
return Boolean.TRUE;
|
||||
}
|
||||
if (str.equalsIgnoreCase("false")) {
|
||||
return Boolean.FALSE;
|
||||
}
|
||||
// else - string cannot be converted to boolean
|
||||
throw new EvaluationException(ErrorEval.VALUE_INVALID);
|
||||
}
|
||||
|
||||
if (ve instanceof NumericValueEval) {
|
||||
NumericValueEval ne = (NumericValueEval) ve;
|
||||
double d = ne.getNumberValue();
|
||||
if (Double.isNaN(d)) {
|
||||
throw new EvaluationException(ErrorEval.VALUE_INVALID);
|
||||
}
|
||||
return Boolean.valueOf(d != 0);
|
||||
}
|
||||
if (ve instanceof ErrorEval) {
|
||||
throw new EvaluationException((ErrorEval) ve);
|
||||
}
|
||||
throw new RuntimeException("Unexpected eval (" + ve.getClass().getName() + ")");
|
||||
}
|
||||
if (ve instanceof NumericValueEval) {
|
||||
NumericValueEval ne = (NumericValueEval) ve;
|
||||
double d = ne.getNumberValue();
|
||||
if (Double.isNaN(d)) {
|
||||
throw new EvaluationException(ErrorEval.VALUE_INVALID);
|
||||
}
|
||||
return Boolean.valueOf(d != 0);
|
||||
}
|
||||
if (ve instanceof ErrorEval) {
|
||||
throw new EvaluationException((ErrorEval) ve);
|
||||
}
|
||||
throw new RuntimeException("Unexpected eval (" + ve.getClass().getName() + ")");
|
||||
}
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in New Issue