org.antlr.runtime

Class CharStreamState

java.lang.Object

org.antlr.runtime.CharStreamState

public class CharStreamState
extends java.lang.Object

When walking ahead with cyclic DFA or for syntactic predicates, we need to record the state of the input stream (char index, line, etc...) so that we can rewind the state after scanning ahead. This is the complete state of a stream.

Field Summary

Fields

Modifier and Type	Field and Description
(package private) int	charPositionInLine What char position 0..n-1 in line is scanner before processing buffer[p]?
(package private) int	line What line number is the scanner at before processing buffer[p]?
(package private) int	p Index into the char stream of next lookahead char

Constructor Summary

Constructors

Constructor and Description
CharStreamState()

Method Summary

Methods inherited from class java.lang.Object

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

Field Detail

p

int p

Index into the char stream of next lookahead char

line

int line

What line number is the scanner at before processing buffer[p]?

charPositionInLine

int charPositionInLine

What char position 0..n-1 in line is scanner before processing buffer[p]?

Constructor Detail

CharStreamState

public CharStreamState()