Package org.aspectj.org.eclipse.jdt.internal.compiler.util

Class CharDeduplication

java.lang.Object

org.aspectj.org.eclipse.jdt.internal.compiler.util.CharDeduplication

public class CharDeduplication
extends Object

Field Summary

Fields

Modifier and Type	Field	Description
static final int	SEARCH_SIZE	number of entries to linear search affects performance but decreases collisions - does not affect memory
static final int	TABLE_SIZE	size of hash table, does not affect performance due to hashing but affects memory

Method Summary

Modifier and Type	Method	Description
static CharDeduplication	getThreadLocalInstance()
static char[]	intern(char[] source)
void	reset()	Deprecated.
char[]	sharedCopyOfRange(char[] source, int from, int to)	like Arrays.copyOfRange(source, from, to) but returns a cached instance of the former result if available

Methods inherited from class java.lang.Object

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

Field Details

TABLE_SIZE

public static final int TABLE_SIZE

size of hash table, does not affect performance due to hashing but affects memory

See Also:

• Constant Field Values

SEARCH_SIZE

public static final int SEARCH_SIZE

number of entries to linear search affects performance but decreases collisions - does not affect memory

See Also:

• Constant Field Values

Method Details

getThreadLocalInstance

public static CharDeduplication getThreadLocalInstance()

Returns:

an instance that is *not* thread safe. To be used in a single thread only.

reset

@Deprecated
public void reset()

Deprecated.

public for test purpose only

intern

public static char[] intern(char[] source)

sharedCopyOfRange

public char[] sharedCopyOfRange(char[] source,
 int from,
 int to)

like Arrays.copyOfRange(source, from, to) but returns a cached instance of the former result if available

Parameters:

from - start index (inclusive)

to - end index (exclusive)

Returns:

source[from..to-1]

See Also:

• Arrays.copyOfRange(char[], int, int)