jpicedt.format.input.util
Class NumericalExpression
java.lang.Object
jpicedt.format.input.util.AbstractRegularExpression
jpicedt.format.input.util.NumericalExpression
- All Implemented Interfaces:
- ExpressionConstants
public class NumericalExpression
- extends AbstractRegularExpression
An expression containing only digits, possibly preceded by whitespaces ;
a post-delimiters can be specified, as well as the number's type (int or double) and its sign
- Since:
- jpicedt 1.3
- Version:
- $Id: NumericalExpression.java,v 1.4.2.1 2007/09/02 11:56:13 reynal Exp $
- Author:
- Sylvain Reynal
Fields inherited from interface jpicedt.format.input.util.ExpressionConstants |
ANY_CHAR, ANY_CHAR_EOL, ANY_SIGN, AT_LEAST, AT_MOST, DEBUG, DOUBLE, EOL, EXACTLY, INTEGER, NEGATIVE, NON_NULL, POSITIVE, STRICTLY_NEGATIVE, STRICTLY_POSITIVE, WHITE_SPACES, WHITE_SPACES_OR_EOL |
Method Summary |
Number |
getValue()
Return the parsed value, wrapped in a Number (either Integer or Double) |
boolean |
interpret(Context context)
Parses this expression, possibly using the given Context to fetch the String to interpret
if this Expression is a leaf expression. |
String |
toString()
|
NumericalExpression
public NumericalExpression(int numberType,
int sign,
String postfix,
boolean swallowPostFix)
- Parameters:
numberType
- INTEGER or DOUBLEsign
- ANY_SIGN, POSITIVE, NEGATIVE, STRICTLY_POSITIVE, STRICTLY_NEGATIVE or NON_NULLpostfix
- a String that signals the end of this numerical expression (if NULL, swallows as many digits as possible)swallowPostFix
- if TRUE, move cursor JUST BEHIND the postfix; else move it TO THE POSTFIX POSITION
N/A if postFix is null.
NumericalExpression
public NumericalExpression(int numberType,
int sign)
- Constructor w/o postfix, i.e. parse as many digits as possible.
- Parameters:
numberType
- INTEGER or DOUBLEsign
- ANY_SIGN, POSITIVE, NEGATIVE, STRICTLY_POSITIVE, STRICTLY_NEGATIVE or NON_NULL
NumericalExpression
public NumericalExpression()
- Constructor w/o postfix, type=DOUBLE and sign=ANY_SIGN.
interpret
public boolean interpret(Context context)
throws REParserException
- Description copied from class:
AbstractRegularExpression
- Parses this expression, possibly using the given Context to fetch the String to interpret
if this Expression is a leaf expression.
- Specified by:
interpret
in class AbstractRegularExpression
- Returns:
- TRUE if expr has been found on the current line
Calls action() in case of successful parsing, and send a ParserEvent with value=parsed number.
- Throws:
REParserException
- if an error occur during parsing
getValue
public Number getValue()
- Return the parsed value, wrapped in a Number (either Integer or Double)
toString
public String toString()
- Overrides:
toString
in class Object
Submit a bug : syd@jpicedt.org