antlr.collections.impl
Class IndexedVector

java.lang.Object
  antlr.collections.impl.IndexedVector

public class IndexedVector
extends Object

A simple indexed vector: a normal vector except that you must specify a key when adding an element. This allows fast lookup and allows the order of specification to be preserved.

Field Summary

protected Vector	elements
protected Hashtable	index

Constructor Summary

IndexedVector()
IndexedVector constructor comment.

IndexedVector(int size)
IndexedVector constructor comment.

Method Summary

void	appendElement(Object key, Object value)
Object	elementAt(int i) Returns the element at the specified index.
Enumeration	elements()
Object	getElement(Object key)
boolean	removeElement(Object key) remove element referred to by key NOT value; return false if not found.
int	size()

Methods inherited from class java.lang.Object

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

Field Detail

elements

protected Vector elements

index

protected Hashtable index

Constructor Detail

IndexedVector

public IndexedVector()

IndexedVector constructor comment.

IndexedVector

public IndexedVector(int size)

IndexedVector constructor comment.

Parameters:

size - int

Method Detail

appendElement

public void appendElement(Object key,
                          Object value)

elementAt

public Object elementAt(int i)

Returns the element at the specified index.

Parameters:

index - the index of the desired element

Throws:

ArrayIndexOutOfBoundsException - If an invalid index was given.

elements

public Enumeration elements()

getElement

public Object getElement(Object key)

removeElement

public boolean removeElement(Object key)

remove element referred to by key NOT value; return false if not found.

size

public int size()