org.parboiled.common

Class IntArrayStack

java.lang.Object

org.parboiled.common.IntArrayStack

public class IntArrayStack
extends java.lang.Object

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	IntArrayStack.UnderflowException

Constructor Summary

Constructors

Constructor and Description
IntArrayStack()

Method Summary

Methods

Modifier and Type	Method and Description
void	clear() Empties the stack.
void	getElements(int[] destArray, int destStartIndex) Copies all elements currently on the stack into the given array.
boolean	isEmpty() Tests if the stack is empty.
int	peek() Returns the item at the top of the stack without removing it.
int	pop() Removes the most recently inserted item from the stack.
void	push(int x) Pushes a new item onto the stack.
int	size() Returns the number of element currently on the stack.
int[]	toArray()

Methods inherited from class java.lang.Object

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

Constructor Detail

IntArrayStack

public IntArrayStack()

Method Detail

isEmpty

public boolean isEmpty()

Tests if the stack is empty.

Returns:

true if empty, false otherwise.

size

public int size()

Returns the number of element currently on the stack.

Returns:

the number of element currently on the stack

getElements

public void getElements(int[] destArray,
               int destStartIndex)

Copies all elements currently on the stack into the given array.

Parameters:

destArray - the array

destStartIndex - the index to start copying into

toArray

public int[] toArray()

Returns:

all elements in a new array.

clear

public void clear()

Empties the stack.

peek

public int peek()

Returns the item at the top of the stack without removing it.

Returns:

the most recently inserted item in the stack.

Throws:

IntArrayStack.UnderflowException - if the stack is empty.

pop

public int pop()

Removes the most recently inserted item from the stack.

Returns:

the top stack item

Throws:

IntArrayStack.UnderflowException - if the stack is empty.

push

public void push(int x)

Pushes a new item onto the stack.

Parameters:

x - the item to add.