nz.org.venice.parser
Class TokenStack

java.lang.Object
  java.util.AbstractCollection
      java.util.AbstractList
          java.util.Vector
              nz.org.venice.parser.TokenStack

All Implemented Interfaces:

java.lang.Cloneable, java.util.Collection, java.util.List, java.util.RandomAccess, java.io.Serializable

public class TokenStack

extends java.util.Vector

A stack of tokens which is used during parsing.

See Also:

Serialized Form

Field Summary

Fields inherited from class java.util.Vector

capacityIncrement, elementCount, elementData

Fields inherited from class java.util.AbstractList

modCount

Constructor Summary

TokenStack()
Create a new token stack.

Method Summary

Token	get()
boolean	match(int tokenType) Compare the token on the top of the stack with the given type.
Token	pop() Remove and return the token on the top of the stack.
boolean	pop(int tokenType) Remove the token on the top of the stack and compare it with the given type.
java.lang.String	toString()

Methods inherited from class java.util.Vector

add, add, addAll, addAll, addElement, capacity, clear, clone, contains, containsAll, copyInto, elementAt, elements, ensureCapacity, equals, firstElement, get, hashCode, indexOf, indexOf, insertElementAt, isEmpty, lastElement, lastIndexOf, lastIndexOf, remove, remove, removeAll, removeAllElements, removeElement, removeElementAt, removeRange, retainAll, set, setElementAt, setSize, size, subList, toArray, toArray, trimToSize

Methods inherited from class java.util.AbstractList

iterator, listIterator, listIterator

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.util.List

iterator, listIterator, listIterator

Constructor Detail

TokenStack

public TokenStack()

Create a new token stack.

Method Detail

get

public Token get()

pop

public Token pop()

Remove and return the token on the top of the stack.

Returns:

the token on the top of the stack

pop

public boolean pop(int tokenType)

Remove the token on the top of the stack and compare it with the given type.

Parameters:

tokenType - the expected token type on the stack.

Returns:

TRUE if the token is of the same type.

match

public boolean match(int tokenType)

Compare the token on the top of the stack with the given type. The token will not be removed from the stack.

Parameters:

tokenType - token type to compare with

Returns:

1 if the token is of the same type; 0 otherwise

toString

public java.lang.String toString()