LongArray

java.lang.Object
- com.googlecode.javaewah.LongArray

All Implemented Interfaces:

Buffer, java.lang.Cloneable
```
final class LongArray
extends java.lang.Object
implements Buffer, java.lang.Cloneable
```
Long array wrapper. Users should not be concerned by this class.

Field Summary

Fields
Modifier and Type	Field and Description
`private int`	`actualSizeInWords` The actual size in words.
`private long[]`	`buffer` The buffer (array of 64-bit words)
`private static int`	`DEFAULT_BUFFER_SIZE` The Constant DEFAULT_BUFFER_SIZE: default memory allocation when the object is constructed.

Constructor Summary

Constructors
Constructor and Description

LongArray()
Creates a buffer with default size

LongArray(int bufferSize)
Creates a buffer with explicit size

Constructors
Constructor and Description
`LongArray()` Creates a buffer with default size
`LongArray(int bufferSize)` Creates a buffer with explicit size

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`void`	`andLastWord(long mask)` Replaces the last word position in the buffer with its bitwise-and with the given mask.
`void`	`andWord(int position, long mask)` Replaces the word at the given position in the buffer with its bitwise-and with the given mask.
`void`	`clear()` Resets the buffer The buffer is not fully cleared and any new set operations should overwrite stale data
`LongArray`	`clone()` Creates and returns a copy of the buffer
`void`	`collapse(int position, int length)` Removes a given number of words at the given position in the buffer.
`void`	`ensureCapacity(int capacity)` Increases the size of the buffer if necessary
`void`	`expand(int position, int length)` Expands the buffer by adding the given number of words at the given position.
`long`	`getLastWord()` Returns the last word of the buffer
`long`	`getWord(int position)` Returns the word at a given position
`void`	`negateWord(int position)` Negates the word at the given position in the buffer
`void`	`negative_push_back(Buffer buffer, int start, int number)` Same as push_back, but the words are negated.
`private int`	`newSizeInWords(int number)` Returns the resulting buffer size in words given the number of words to add.
`void`	`orLastWord(long mask)` Replaces the last word position in the buffer with its bitwise-or with the given mask.
`void`	`orWord(int position, long mask)` Replaces the word at the given position in the buffer with its bitwise-or with the given mask.
`void`	`push_back(Buffer buffer, int start, int number)` Appends the specified buffer words to the end of the buffer.
`void`	`push_back(long word)` Appends the specified word to the end of the buffer
`void`	`removeLastWord()` Removes the last word from the buffer
`private void`	`resizeBuffer(int number)` Resizes the buffer if the number of words to add exceeds the buffer capacity.
`void`	`setLastWord(long word)` Replaces the last word in the buffer with the specified word.
`void`	`setWord(int position, long word)` Replaces the word at the given position in the buffer with the specified word.
`int`	`sizeInWords()` Returns the actual size in words
`void`	`swap(Buffer other)` Swap the content of the buffer with another.
`void`	`trim()` Reduces the internal buffer to its minimal allowable size.

Methods inherited from class java.lang.Object
equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - actualSizeInWords
```
private int actualSizeInWords
```
    The actual size in words.
  - buffer
```
private long[] buffer
```
    The buffer (array of 64-bit words)
  - DEFAULT_BUFFER_SIZE
```
private static final int DEFAULT_BUFFER_SIZE
```
    The Constant DEFAULT_BUFFER_SIZE: default memory allocation when the object is constructed.
    
    See Also:
    
    Constant Field Values
- Constructor Detail
  - LongArray
```
public LongArray()
```
    Creates a buffer with default size
  - LongArray
```
public LongArray(int bufferSize)
```
    Creates a buffer with explicit size
    
    Parameters:
    
    bufferSize -
- Method Detail
  - sizeInWords
```
public int sizeInWords()
```
    Description copied from interface: Buffer
    
    Returns the actual size in words
    
    Specified by:
    
    sizeInWords in interface Buffer
  - ensureCapacity
```
public void ensureCapacity(int capacity)
```
    Description copied from interface: Buffer
    
    Increases the size of the buffer if necessary
    
    Specified by:
    
    ensureCapacity in interface Buffer
  - getWord
```
public long getWord(int position)
```
    Description copied from interface: Buffer
    
    Returns the word at a given position
    
    Specified by:
    
    getWord in interface Buffer
    
    Returns:
    
    the word
  - getLastWord
```
public long getLastWord()
```
    Description copied from interface: Buffer
    
    Returns the last word of the buffer
    
    Specified by:
    
    getLastWord in interface Buffer
    
    Returns:
    
    the last word
  - clear
```
public void clear()
```
    Description copied from interface: Buffer
    
    Resets the buffer The buffer is not fully cleared and any new set operations should overwrite stale data
    
    Specified by:
    
    clear in interface Buffer
  - trim
```
public void trim()
```
    Description copied from interface: Buffer
    
    Reduces the internal buffer to its minimal allowable size. This can free memory.
    
    Specified by:
    
    trim in interface Buffer
  - setWord
```
public void setWord(int position,
                    long word)
```
    Description copied from interface: Buffer
    
    Replaces the word at the given position in the buffer with the specified word.
    
    Specified by:
    
    setWord in interface Buffer
  - setLastWord
```
public void setLastWord(long word)
```
    Description copied from interface: Buffer
    
    Replaces the last word in the buffer with the specified word.
    
    Specified by:
    
    setLastWord in interface Buffer
  - push_back
```
public void push_back(long word)
```
    Description copied from interface: Buffer
    
    Appends the specified word to the end of the buffer
    
    Specified by:
    
    push_back in interface Buffer
  - push_back
```
public void push_back(Buffer buffer,
                      int start,
                      int number)
```
    Description copied from interface: Buffer
    
    Appends the specified buffer words to the end of the buffer.
    
    Specified by:
    
    push_back in interface Buffer
    
    Parameters:
    
    buffer - the buffer
    
    start - the position of the first word to add
    
    number - the number of words to add
  - negative_push_back
```
public void negative_push_back(Buffer buffer,
                               int start,
                               int number)
```
    Description copied from interface: Buffer
    
    Same as push_back, but the words are negated.
    
    Specified by:
    
    negative_push_back in interface Buffer
    
    Parameters:
    
    buffer - the buffer
    
    start - the position of the first word to add
    
    number - the number of words to add
  - removeLastWord
```
public void removeLastWord()
```
    Description copied from interface: Buffer
    
    Removes the last word from the buffer
    
    Specified by:
    
    removeLastWord in interface Buffer
  - negateWord
```
public void negateWord(int position)
```
    Description copied from interface: Buffer
    
    Negates the word at the given position in the buffer
    
    Specified by:
    
    negateWord in interface Buffer
  - andWord
```
public void andWord(int position,
                    long mask)
```
    Description copied from interface: Buffer
    
    Replaces the word at the given position in the buffer with its bitwise-and with the given mask.
    
    Specified by:
    
    andWord in interface Buffer
  - orWord
```
public void orWord(int position,
                   long mask)
```
    Description copied from interface: Buffer
    
    Replaces the word at the given position in the buffer with its bitwise-or with the given mask.
    
    Specified by:
    
    orWord in interface Buffer
  - andLastWord
```
public void andLastWord(long mask)
```
    Description copied from interface: Buffer
    
    Replaces the last word position in the buffer with its bitwise-and with the given mask.
    
    Specified by:
    
    andLastWord in interface Buffer
  - orLastWord
```
public void orLastWord(long mask)
```
    Description copied from interface: Buffer
    
    Replaces the last word position in the buffer with its bitwise-or with the given mask.
    
    Specified by:
    
    orLastWord in interface Buffer
  - expand
```
public void expand(int position,
                   int length)
```
    Description copied from interface: Buffer
    
    Expands the buffer by adding the given number of words at the given position. The added words may contain stale data.
    
    Specified by:
    
    expand in interface Buffer
    
    Parameters:
    
    position - the position of the buffer where to add words
    
    length - the number of words to add
  - collapse
```
public void collapse(int position,
                     int length)
```
    Description copied from interface: Buffer
    
    Removes a given number of words at the given position in the buffer. The freed words at the end of the buffer are properly cleaned.
    
    Specified by:
    
    collapse in interface Buffer
    
    Parameters:
    
    position - the position of the buffer where to add words
    
    length - the number of words to add
  - clone
```
public LongArray clone()
```
    Description copied from interface: Buffer
    
    Creates and returns a copy of the buffer
    
    Specified by:
    
    clone in interface Buffer
    
    Overrides:
    
    clone in class java.lang.Object
  - swap
```
public void swap(Buffer other)
```
    Description copied from interface: Buffer
    
    Swap the content of the buffer with another.
    
    Specified by:
    
    swap in interface Buffer
    
    Parameters:
    
    other - buffer to swap with
  - resizeBuffer
```
private void resizeBuffer(int number)
```
    Resizes the buffer if the number of words to add exceeds the buffer capacity.
    
    Parameters:
    
    number - the number of words to add
  - newSizeInWords
```
private int newSizeInWords(int number)
```
    Returns the resulting buffer size in words given the number of words to add.
    
    Parameters:
    
    number - the number of words to add

Class LongArray

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

actualSizeInWords

buffer

DEFAULT_BUFFER_SIZE

Constructor Detail

LongArray

LongArray

Method Detail

sizeInWords

ensureCapacity

getWord

getLastWord

clear

trim

setWord

setLastWord

push_back

push_back

negative_push_back

removeLastWord

negateWord

andWord

orWord

andLastWord

orLastWord

expand

collapse

clone

swap

resizeBuffer

newSizeInWords