Package com.intellij.util.containers

Class WeakList<T>

java.lang.Object

java.util.AbstractCollection<T>

com.intellij.util.containers.UnsafeWeakList<T>

com.intellij.util.containers.WeakList<T>

All Implemented Interfaces:

java.lang.Iterable<T>, java.util.Collection<T>

public class WeakList<T>
extends UnsafeWeakList<T>

Implementation of the Collection interface which:

• Stores elements using weak semantics (see WeakReference)
• Automatically reclaims storage for garbage collected elements
• Is thread safe
• Is NOT RandomAccess, because garbage collector can remove element at any time
• Does NOT support null elements

Please note that since weak references can be collected at any time, index-based methods (like get(index)) or size-based methods (like size()) are dangerous, misleading, error-inducing and are not supported. Instead, please use #add(T) and iterator().

Field Summary

Fields inherited from class com.intellij.util.containers.UnsafeWeakList

myList

Constructor Summary

Constructors

Constructor and Description
WeakList()
WeakList(int initialCapacity)

Method Summary

Modifier and Type	Method and Description
boolean	add(T element)
boolean	addAll(java.util.Collection<? extends T> c)
boolean	addIfAbsent(T element)
void	clear()
boolean	contains(java.lang.Object o)
java.util.List<T>	copyAndClear()
boolean	isEmpty()
java.util.Iterator<T>	iterator()
boolean	remove(java.lang.Object o)
boolean	removeAll(java.util.Collection<?> c)
java.util.List<T>	toStrongList()

Methods inherited from class com.intellij.util.containers.UnsafeWeakList

get, size

Methods inherited from class java.util.AbstractCollection

containsAll, retainAll, toArray, toArray, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Collection

equals, hashCode, parallelStream, removeIf, spliterator, stream

Methods inherited from interface java.lang.Iterable

forEach

Constructor Detail

WeakList

public WeakList()

WeakList

public WeakList(int initialCapacity)

Method Detail

add

public boolean add(T element)

Specified by:

add in interface java.util.Collection<T>

Overrides:

add in class UnsafeWeakList<T>

addAll

public boolean addAll(java.util.Collection<? extends T> c)

Specified by:

addAll in interface java.util.Collection<T>

Overrides:

addAll in class UnsafeWeakList<T>

addIfAbsent

public boolean addIfAbsent(T element)

Overrides:

addIfAbsent in class UnsafeWeakList<T>

clear

public void clear()

Specified by:

clear in interface java.util.Collection<T>

Overrides:

clear in class UnsafeWeakList<T>

contains

public boolean contains(java.lang.Object o)

Specified by:

contains in interface java.util.Collection<T>

Overrides:

contains in class java.util.AbstractCollection<T>

remove

public boolean remove(java.lang.Object o)

Specified by:

remove in interface java.util.Collection<T>

Overrides:

remove in class UnsafeWeakList<T>

removeAll

public boolean removeAll(java.util.Collection<?> c)

Specified by:

removeAll in interface java.util.Collection<T>

Overrides:

removeAll in class UnsafeWeakList<T>

isEmpty

public boolean isEmpty()

Specified by:

isEmpty in interface java.util.Collection<T>

Overrides:

isEmpty in class UnsafeWeakList<T>

iterator

public java.util.Iterator<T> iterator()

Specified by:

iterator in interface java.lang.Iterable<T>

Specified by:

iterator in interface java.util.Collection<T>

Overrides:

iterator in class UnsafeWeakList<T>

toStrongList

public java.util.List<T> toStrongList()

Overrides:

toStrongList in class UnsafeWeakList<T>

copyAndClear

public java.util.List<T> copyAndClear()