pobs.action
Class PStack

java.lang.Object
  java.util.AbstractCollection
      pobs.action.PAbstractCollection
          pobs.action.PAbstractList
              pobs.action.PVector
                  pobs.action.PStack

All Implemented Interfaces:

java.util.Collection, java.util.List, PCollection, PList

public class PStack

extends PVector

Copies the methods of the Stackclass and implements a number of POBS actions allowing the stack to be manipulated by a parser.

Author:

Martijn W. van der Lee

Constructor Summary

PStack()

Method Summary

boolean	empty() Tests if this stack is empty.
java.lang.Object	peek() Looks at the object at the top of this stack without removing it from the stack.
java.lang.Object	pop() Removes the object at the top of this stack and returns that object as the value of this function.
PAction	popAction()
java.lang.Object	push(java.lang.Object item) Pushes an item onto the top of this stack.
PAction	pushAction()
PAction	pushAction(java.lang.Object o)
int	search(java.lang.Object o) Returns the 1-based position where an object is on this stack.

Methods inherited from class pobs.action.PVector

add, add, addAll, addAll, clear, contains, containsAll, get, getCollection, indexOf, isEmpty, iterator, lastIndexOf, listIterator, listIterator, remove, remove, removeAll, retainAll, set, size, subList, toArray, toArray

Methods inherited from class pobs.action.PAbstractList

addAction, addAction, addAction, addAction, addAllAction, addAllAction, removeAction, removeAction, setAction, setAction

Methods inherited from class pobs.action.PAbstractCollection

addAction, addAction, addAllAction, clearAction, removeAction, removeAction, removeAllAction, retainAllAction

Methods inherited from class java.util.AbstractCollection

toString

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.util.List

equals, hashCode

Methods inherited from interface pobs.action.PCollection

addAction, addAction, addAllAction, clearAction, removeAction, removeAction, removeAllAction, retainAllAction

Constructor Detail

PStack

public PStack()

Method Detail

popAction

public PAction popAction()

pushAction

public PAction pushAction()

pushAction

public PAction pushAction(java.lang.Object o)

empty

public boolean empty()

Tests if this stack is empty.

peek

public java.lang.Object peek()

Looks at the object at the top of this stack without removing it from the stack.

pop

public java.lang.Object pop()

Removes the object at the top of this stack and returns that object as the value of this function.

push

public java.lang.Object push(java.lang.Object item)

Pushes an item onto the top of this stack.

search

public int search(java.lang.Object o)

Returns the 1-based position where an object is on this stack.