Package akka.dispatch.sysmsg

Class EarliestFirstSystemMessageList

java.lang.Object

scala.AnyVal

akka.dispatch.sysmsg.EarliestFirstSystemMessageList

public class EarliestFirstSystemMessageList
extends scala.AnyVal

INTERNAL API

Value class supporting list operations on system messages. The next field of SystemMessage is hidden, and can only accessed through the value classes LatestFirstSystemMessageList and EarliestFirstSystemMessageList, abstracting over the fact that system messages are the list nodes themselves. If used properly, this stays a compile time construct without any allocation overhead.

This list is mutable.

This list type also encodes that the messages contained are in reverse order, i.e. the head of the list is the latest appended element.

Constructor Summary

Constructors

Constructor	Description
EarliestFirstSystemMessageList(SystemMessage head)

Method Summary

Modifier and Type	Method	Description
EarliestFirstSystemMessageList	$colon$colon(SystemMessage msg)	Attaches a message to the current head of the list.
static EarliestFirstSystemMessageList	$colon$colon$extension(EarliestFirstSystemMessageList $this, SystemMessage msg)
boolean	equals(java.lang.Object x$1)
static boolean	equals$extension(EarliestFirstSystemMessageList $this, java.lang.Object x$1)
int	hashCode()
static int	hashCode$extension(EarliestFirstSystemMessageList $this)
SystemMessage	head()
boolean	isEmpty()	Indicates if the list is empty or not.
static boolean	isEmpty$extension(EarliestFirstSystemMessageList $this)
boolean	nonEmpty()	Indicates if the list has at least one element or not.
static boolean	nonEmpty$extension(EarliestFirstSystemMessageList $this)
LatestFirstSystemMessageList	reverse()	Reverses the list.
EarliestFirstSystemMessageList	reverse_$colon$colon$colon(LatestFirstSystemMessageList other)
static EarliestFirstSystemMessageList	reverse_$colon$colon$colon$extension(EarliestFirstSystemMessageList $this, LatestFirstSystemMessageList other)
static LatestFirstSystemMessageList	reverse$extension(EarliestFirstSystemMessageList $this)
EarliestFirstSystemMessageList	reversePrepend(LatestFirstSystemMessageList other)	Prepends a list in a reversed order to the head of this list.
static EarliestFirstSystemMessageList	reversePrepend$extension(EarliestFirstSystemMessageList $this, LatestFirstSystemMessageList other)
int	size()	Indicates if the list is empty or not.
static int	size$extension(EarliestFirstSystemMessageList $this)
EarliestFirstSystemMessageList	tail()	Gives back the list containing all the elements except the first.
static EarliestFirstSystemMessageList	tail$extension(EarliestFirstSystemMessageList $this)

Methods inherited from class java.lang.Object

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

Constructor Detail

EarliestFirstSystemMessageList

public EarliestFirstSystemMessageList(SystemMessage head)

Method Detail

isEmpty$extension

public static final boolean isEmpty$extension(EarliestFirstSystemMessageList $this)

nonEmpty$extension

public static final boolean nonEmpty$extension(EarliestFirstSystemMessageList $this)

size$extension

public static final int size$extension(EarliestFirstSystemMessageList $this)

tail$extension

public static final EarliestFirstSystemMessageList tail$extension(EarliestFirstSystemMessageList $this)

reverse$extension

public static final LatestFirstSystemMessageList reverse$extension(EarliestFirstSystemMessageList $this)

$colon$colon$extension

public static final EarliestFirstSystemMessageList $colon$colon$extension(EarliestFirstSystemMessageList $this,
                                                                          SystemMessage msg)

reversePrepend$extension

public static final EarliestFirstSystemMessageList reversePrepend$extension(EarliestFirstSystemMessageList $this,
                                                                            LatestFirstSystemMessageList other)

reverse_$colon$colon$colon$extension

public static final EarliestFirstSystemMessageList reverse_$colon$colon$colon$extension(EarliestFirstSystemMessageList $this,
                                                                                        LatestFirstSystemMessageList other)

hashCode$extension

public static final int hashCode$extension(EarliestFirstSystemMessageList $this)

equals$extension

public static final boolean equals$extension(EarliestFirstSystemMessageList $this,
                                             java.lang.Object x$1)

head

public SystemMessage head()

isEmpty

public final boolean isEmpty()

Indicates if the list is empty or not. This operation has constant cost.

nonEmpty

public final boolean nonEmpty()

Indicates if the list has at least one element or not. This operation has constant cost.

size

public final int size()

Indicates if the list is empty or not. This operation has constant cost.

tail

public final EarliestFirstSystemMessageList tail()

Gives back the list containing all the elements except the first. This operation has constant cost.

*Warning:* as the underlying list nodes (the SystemMessage instances) are mutable, care should be taken when passing the tail to other methods. SystemMessage.unlink() should be called on the head if one wants to detach the tail permanently.

reverse

public final LatestFirstSystemMessageList reverse()

Reverses the list. This operation mutates the underlying list. The cost of the call to reverse is linear in the number of elements.

The type of the returned list is of the opposite order: LatestFirstSystemMessageList

$colon$colon

public final EarliestFirstSystemMessageList $colon$colon(SystemMessage msg)

Attaches a message to the current head of the list. This operation has constant cost.

reversePrepend

public final EarliestFirstSystemMessageList reversePrepend(LatestFirstSystemMessageList other)

Prepends a list in a reversed order to the head of this list. The prepended list will be reversed during the process.

Example: (3, 4, 5) reversePrepend (2, 1, 0) == (0, 1, 2, 3, 4, 5)

The cost of this operation is linear in the size of the list that is to be prepended.

reverse_$colon$colon$colon

public final EarliestFirstSystemMessageList reverse_$colon$colon$colon(LatestFirstSystemMessageList other)

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

equals

public boolean equals(java.lang.Object x$1)

Overrides:

equals in class java.lang.Object