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jpicedt.graphic.io.parser
Class NumericalExpression  

java.lang.Object
  jpicedt.graphic.io.parser.AbstractRegularExpression
      jpicedt.graphic.io.parser.NumericalExpression

All Implemented Interfaces:

ExpressionConstants

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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

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Field Summary
private  int	numberType
private  java.lang.String	postfix
private  int	sign
private  boolean	swallowPostFix
private  java.lang.Number	value

 

Fields inherited from interface jpicedt.graphic.io.parser.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

 

Constructor Summary

NumericalExpression()           Constructor w/o postfix, type=DOUBLE and sign=ANY_SIGN.

NumericalExpression(int numberType, int sign)           Constructor w/o postfix, i.e.

NumericalExpression(int numberType, int sign, java.lang.String postfix, boolean swallowPostFix)

 

Method Summary
java.lang.Number	getValue()           Return the parsed value, wrapped in a Number (either Integer or Double)
boolean	interpret(Context context)           Parses this expression, possibly using Context to fetch the String to interpret if this Expression is a leaf expression.
java.lang.String	toString()           Convert this Object to a human-readable String.

 

Methods inherited from class jpicedt.graphic.io.parser.AbstractRegularExpression

action

 

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

 

Field Detail

numberType

private int numberType

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sign

private int sign

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postfix

private java.lang.String postfix

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swallowPostFix

private boolean swallowPostFix

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value

private java.lang.Number value

Constructor Detail

NumericalExpression

public NumericalExpression(int numberType,
                           int sign,
                           java.lang.String postfix,
                           boolean swallowPostFix)

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NumericalExpression

public NumericalExpression(int numberType,
                           int sign)

Constructor w/o postfix, i.e. parse as many digits as possible.

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NumericalExpression

public NumericalExpression()

Constructor w/o postfix, type=DOUBLE and sign=ANY_SIGN.

Method Detail

interpret

public boolean interpret(Context context)
                  throws ParserException

Description copied from class: AbstractRegularExpression

Parses this expression, possibly using Context to fetch the String to interpret if this Expression is a leaf expression.

Specified by:

interpret in class AbstractRegularExpression

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getValue

public java.lang.Number getValue()

Return the parsed value, wrapped in a Number (either Integer or Double)

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toString

public java.lang.String toString()

Description copied from class: java.lang.Object

Convert this Object to a human-readable String. There are no limits placed on how long this String should be or what it should contain. We suggest you make it as intuitive as possible to be able to place it into System.out.println() 55 and such.

It is typical, but not required, to ensure that this method never completes abruptly with a java.lang.RuntimeException.

This method will be called when performing string concatenation with this object. If the result is null, string concatenation will instead use "null".

The default implementation returns getClass().getName() + "@" + Integer.toHexString(hashCode()).

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