antlr

Class CharQueue

java.lang.Object

antlr.CharQueue

public class CharQueue
extends Object

A circular buffer object used by CharBuffer

Field Summary

Fields

Modifier and Type	Field and Description
protected char[]	buffer Physical circular buffer of tokens
protected int	nbrEntries number of tokens in the queue

Constructor Summary

Constructors

Constructor and Description
CharQueue(int minSize)

Method Summary

Modifier and Type	Method and Description
void	append(char tok) Add token to end of the queue
char	elementAt(int idx) Fetch a token from the queue by index
void	init(int size) Initialize the queue.
void	removeFirst() Remove char from front of queue
void	reset() Clear the queue.

Methods inherited from class java.lang.Object

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

Field Detail

buffer

protected char[] buffer

Physical circular buffer of tokens

nbrEntries

protected int nbrEntries

number of tokens in the queue

Constructor Detail

CharQueue

public CharQueue(int minSize)

Method Detail

append

public final void append(char tok)

Add token to end of the queue

Parameters:

tok - The token to add

elementAt

public final char elementAt(int idx)

Fetch a token from the queue by index

Parameters:

idx - The index of the token to fetch, where zero is the token at the front of the queue

init

public void init(int size)

Initialize the queue.

Parameters:

size - The initial size of the queue

reset

public final void reset()

Clear the queue. Leaving the previous buffer alone.

removeFirst

public final void removeFirst()

Remove char from front of queue