sjm.examples.tokens
Class ScientificNumberState

java.lang.Object
  |
  +--sjm.parse.tokens.TokenizerState
        |
        +--sjm.parse.tokens.NumberState
              |
              +--sjm.examples.tokens.ScientificNumberState

public class ScientificNumberState

extends NumberState

A ScientificNumberState object returns a number from a reader. This state's idea of a number expands on its superclass, allowing an 'e' followed by an integer to represent 10 to the indicated power. For example, this state will recognize 1e2 as equaling 100.

This class exists primarily to show how to introduce a new tokenizing state.

Field Summary

protected boolean

absorbedE

Fields inherited from class sjm.parse.tokens.NumberState

absorbedDot, absorbedLeadingMinus, c, gotAdigit, value

Constructor Summary

ScientificNumberState()

Method Summary

static void	main(java.lang.String[] args) Just a demo.
protected void	parseRight(java.io.PushbackReader r)
protected void	reset(int cin)
protected Token	value(java.io.PushbackReader r, Tokenizer t)

Methods inherited from class sjm.parse.tokens.NumberState

absorbDigits, nextToken, parseLeft

Methods inherited from class java.lang.Object

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

Field Detail

absorbedE

protected boolean absorbedE

Constructor Detail

ScientificNumberState

public ScientificNumberState()

Method Detail

main

public static void main(java.lang.String[] args)
                 throws java.io.IOException

Just a demo.

parseRight

protected void parseRight(java.io.PushbackReader r)
                   throws java.io.IOException

Overrides:

parseRight in class NumberState

reset

protected void reset(int cin)

Overrides:

reset in class NumberState

value

protected Token value(java.io.PushbackReader r,
                      Tokenizer t)
               throws java.io.IOException

Overrides:

value in class NumberState