Top Description Constructors Methods
org.jruby.util

public abstract Class ArraySupport

extends Object
Class Inheritance
Imports
org.jruby.runtime.builtin.IRubyObject, java.util.Arrays
Support methods for (native) arrays. These utility methods are intended as `System.arraycopy` replacements esp. for common cases such as (method) argument processing, where the arrays are usually small. These are fairly common and for such arrays a length switch + an "inlined" array copy/instantiation cuts the execution time to (at least) half, compared to doing a bare native `arraycopy` (on 8u102).
Author
kares

Constructor Summary

AccessConstructor and Description
private
ArraySupport()

Method Summary

Modifier and TypeMethod and Description
public static void
copy(Object[] src, Object[] dst, int
off set to start copying to
dstOff, final int
copied array length
length)

Copy a source array into a destination array.

public static void
copy(Object[] src, int srcOff, Object[] dst, int dstOff, final int length)

public static Object[]
newCopy(Object[] src, int length)

public static IRubyObject[]
newCopy(IRubyObject[] src, int length)

public static IRubyObject[]
newCopy(IRubyObject[] src, final int srcOff, int length)

public static Class<T>[]
newCopy(Class<T>[] src, int length)

public static Object[]
newCopy(Object[] src, Object last)

public static IRubyObject[]
newCopy(IRubyObject[] src, IRubyObject last)

public static IRubyObject[]
newCopy(IRubyObject first, IRubyObject[] src)

Inherited from java.lang.Object:
cloneequalsfinalizegetClasshashCodenotifynotifyAlltoStringwaitwaitwait

Constructor Detail

ArraySupportback to summary
private ArraySupport()

Method Detail

copyback to summary
public static void copy(Object[] src, Object[] dst, int dstOff, final int length)

Copy a source array into a destination array.

Parameters
dstOff:int

off set to start copying to

length:int

copied array length

copyback to summary
public static void copy(Object[] src, int srcOff, Object[] dst, int dstOff, final int length)
newCopyback to summary
public static Object[] newCopy(Object[] src, int length)
newCopyback to summary
public static IRubyObject[] newCopy(IRubyObject[] src, int length)
newCopyback to summary
public static IRubyObject[] newCopy(IRubyObject[] src, final int srcOff, int length)
newCopyback to summary
public static Class<T>[] newCopy(Class<T>[] src, int length)
newCopyback to summary
public static Object[] newCopy(Object[] src, Object last)
newCopyback to summary
public static IRubyObject[] newCopy(IRubyObject[] src, IRubyObject last)
newCopyback to summary
public static IRubyObject[] newCopy(IRubyObject first, IRubyObject[] src)