Package org.apache.xml.utils
Class BoolStack
java.lang.Object
org.apache.xml.utils.BoolStack
- All Implemented Interfaces:
Cloneable
Simple stack for boolean values.
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Constructor Summary
Constructors -
Method Summary
Modifier and TypeMethodDescriptionfinal void
clear()
Clears the stack.clone()
boolean
isEmpty()
Tests if this stack is empty.final boolean
peek()
Looks at the object at the top of this stack without removing it from the stack.final boolean
Looks at the object at the top of this stack without removing it from the stack.final boolean
Looks at the object at the top of this stack without removing it from the stack.final boolean
pop()
Removes the object at the top of this stack and returns that object as the value of this function.final boolean
Removes the object at the top of this stack and returns the next object at the top as the value of this function.final boolean
push
(boolean val) Pushes an item onto the top of this stack.final void
setTop
(boolean b) Set the item at the top of this stackfinal int
size()
Get the length of the list.
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Constructor Details
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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
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Method Details
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size
public final int size()Get the length of the list.- Returns:
- Current length of the list
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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.
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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.
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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
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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
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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.
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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.
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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.
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isEmpty
public boolean isEmpty()Tests if this stack is empty.- Returns:
true
if this stack is empty;false
otherwise.
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clone
- Throws:
CloneNotSupportedException
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