File	Doc	Category	Size	Date	Package
BoolStack.java	API Doc	Java SE 5 API	4322	Fri Aug 26 14:56:04 BST 2005	com.sun.org.apache.xml.internal.utils

BoolStack

• java.lang.Object

Fields Summary
private boolean[]	m_values Array of boolean values
private int	m_allocatedSize Array size allocated
private int	m_index Index into the array of booleans

Constructors Summary
public BoolStack() Default constructor. Note that the default block size is very small, for small lists. this(32);
public BoolStack(int size) Construct a IntVector, using the given block size. param size array size to allocate m_allocatedSize = size; m_values = new boolean[size]; m_index = -1;

Methods Summary
public final void	clear() Clears the stack. m_index = -1;
public java.lang.Object	clone() return super.clone();
private void	grow() Grows the size of the stack m_allocatedSize *= 2; boolean newVector[] = new boolean[m_allocatedSize]; System.arraycopy(m_values, 0, newVector, 0, m_index + 1); m_values = newVector;
public boolean	isEmpty() Tests if this stack is empty. return true if this stack is empty; false otherwise. return (m_index == -1);
public final boolean	peek() Looks at the object at the top of this stack without removing it from the stack. return the object at the top of this stack. throws EmptyStackException if this stack is empty. return m_values[m_index];
public final boolean	peekOrFalse() Looks at the object at the top of this stack without removing it from the stack. If the stack is empty, it returns false. return the object at the top of this stack. return (m_index > -1) ? m_values[m_index] : false;
public final boolean	peekOrTrue() Looks at the object at the top of this stack without removing it from the stack. If the stack is empty, it returns true. return the object at the top of this stack. return (m_index > -1) ? m_values[m_index] : true;
public final boolean	pop() Removes the object at the top of this stack and returns that object as the value of this function. return The object at the top of this stack. throws EmptyStackException if this stack is empty. return m_values[m_index--];
public final boolean	popAndTop() Removes the object at the top of this stack and returns the next object at the top as the value of this function. return Next object to the top or false if none there m_index--; return (m_index >= 0) ? m_values[m_index] : false;
public final boolean	push(boolean val) Pushes an item onto the top of this stack. param val the boolean to be pushed onto this stack. return the item argument. if (m_index == m_allocatedSize - 1) grow(); return (m_values[++m_index] = val);
public final void	setTop(boolean b) Set the item at the top of this stack param b Object to set at the top of this stack m_values[m_index] = b;
public final int	size() Get the length of the list. return Current length of the list return m_index + 1;