Package org.apache.xml.utils

Class BoolStack

  • All Implemented Interfaces:
    java.lang.Cloneable
    public final class BoolStack
extends java.lang.Object
implements java.lang.Cloneable
    Simple stack for boolean values.

    • Constructor Summary

      Constructors 
      Constructor Description
      BoolStack()
      Default constructor.
      BoolStack​(int size)
      Construct a IntVector, using the given block size.

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      void clear()
      Clears the stack.
      java.lang.Object clone()  
      boolean isEmpty()
      Tests if this stack is empty.
      boolean peek()
      Looks at the object at the top of this stack without removing it from the stack.
      boolean peekOrFalse()
      Looks at the object at the top of this stack without removing it from the stack.
      boolean peekOrTrue()
      Looks at the object at the top of this stack without removing it from the stack.
      boolean pop()
      Removes the object at the top of this stack and returns that object as the value of this function.
      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.
      boolean push​(boolean val)
      Pushes an item onto the top of this stack.
      void setTop​(boolean b)
      Set the item at the top of this stack
      int size()
      Get the length of the list.

      • Methods inherited from class java.lang.Object

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

    • Constructor Detail

      • BoolStack

        public BoolStack()
        Default constructor. Note that the default block size is very small, for small lists.

      • BoolStack

        public BoolStack​(int size)
        Construct a IntVector, using the given block size.
        Parameters:
        size - array size to allocate

    • Method Detail

      • size

        public final int size()
        Get the length of the list.
        Returns:
        Current length of the list

      • clear

        public final void clear()
        Clears the stack.

      • push

        public final boolean push​(boolean val)
        Pushes an item onto the top of this stack.
        Parameters:
        val - the boolean to be pushed onto this stack.
        Returns:
        the item argument.

      • pop

        public final boolean pop()
        Removes the object at the top of this stack and returns that object as the value of this function.
        Returns:
        The object at the top of this stack.
        Throws:
        EmptyStackException - if this stack is empty.

      • popAndTop

        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.
        Returns:
        Next object to the top or false if none there

      • setTop

        public final void setTop​(boolean b)
        Set the item at the top of this stack
        Parameters:
        b - Object to set at the top of this stack

      • peek

        public final boolean peek()
        Looks at the object at the top of this stack without removing it from the stack.
        Returns:
        the object at the top of this stack.
        Throws:
        EmptyStackException - if this stack is empty.

      • peekOrFalse

        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.
        Returns:
        the object at the top of this stack.

      • peekOrTrue

        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.
        Returns:
        the object at the top of this stack.

      • isEmpty

        public boolean isEmpty()
        Tests if this stack is empty.
        Returns:
        true if this stack is empty; false otherwise.

      • clone

        public java.lang.Object clone()
                       throws java.lang.CloneNotSupportedException
        Throws:
        java.lang.CloneNotSupportedException