Package com.prineside.luaj

Class WeakTable

java.lang.Object

com.prineside.luaj.WeakTable

All Implemented Interfaces:

com.esotericsoftware.kryo.KryoSerializable

public class WeakTable
extends Object
implements com.esotericsoftware.kryo.KryoSerializable

Subclass of LuaTable that provides weak key and weak value semantics.

Normally these are not created directly, but indirectly when changing the mode of a LuaTable as lua script executes.

However, calling the constructors directly when weak tables are required from Java will reduce overhead.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	WeakTable.WeakKeyAndValueSlot
static class	WeakTable.WeakKeySlot
static class	WeakTable.WeakSlot
static final class	WeakTable.WeakUserdata	Internal class to implement weak userdata values.
static class	WeakTable.WeakValue	Internal class to implement weak values.
static class	WeakTable.WeakValueSlot

Constructor Summary

Constructors

Constructor	Description
WeakTable(boolean weakkeys, boolean weakvalues, LuaValue backing)	Construct a table with weak keys, weak values, or both

Method Summary

Modifier and Type	Method	Description
LuaValue	arrayget(LuaValue[] array, int index)
LuaTable.Slot	entry(LuaValue key, LuaValue value)
static LuaTable	make(boolean weakkeys, boolean weakvalues)
void	read(com.esotericsoftware.kryo.Kryo kryo, com.esotericsoftware.kryo.io.Input input)
protected static LuaValue	strengthen(Object ref)	Unwrap a LuaValue from a WeakReference and/or WeakUserdata.
LuaValue	toLuaValue()
boolean	useWeakKeys()
boolean	useWeakValues()
protected static LuaValue	weaken(LuaValue value)	Self-sent message to convert a value to its weak counterpart
LuaValue	wrap(LuaValue value)
void	write(com.esotericsoftware.kryo.Kryo kryo, com.esotericsoftware.kryo.io.Output output)

Methods inherited from class java.lang.Object

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

Constructor Details

WeakTable

public WeakTable(boolean weakkeys,
 boolean weakvalues,
 LuaValue backing)

Construct a table with weak keys, weak values, or both

Parameters:

weakkeys - true to let the table have weak keys

weakvalues - true to let the table have weak values

Method Details

write

public void write(com.esotericsoftware.kryo.Kryo kryo,
 com.esotericsoftware.kryo.io.Output output)

Specified by:

write in interface com.esotericsoftware.kryo.KryoSerializable

read

public void read(com.esotericsoftware.kryo.Kryo kryo,
 com.esotericsoftware.kryo.io.Input input)

Specified by:

read in interface com.esotericsoftware.kryo.KryoSerializable

make

public static LuaTable make(boolean weakkeys,
 boolean weakvalues)

useWeakKeys

public boolean useWeakKeys()

useWeakValues

public boolean useWeakValues()

toLuaValue

public LuaValue toLuaValue()

entry

public LuaTable.Slot entry(LuaValue key,
 LuaValue value)

weaken

protected static LuaValue weaken(LuaValue value)

Self-sent message to convert a value to its weak counterpart

Parameters:

value - value to convert

Returns:

LuaValue that is a strong or weak reference, depending on type of value

strengthen

protected static LuaValue strengthen(Object ref)

Unwrap a LuaValue from a WeakReference and/or WeakUserdata.

Parameters:

ref - reference to convert

Returns:

LuaValue or null

See Also:

• weaken(LuaValue)

wrap

public LuaValue wrap(LuaValue value)

arrayget

public LuaValue arrayget(LuaValue[] array,
 int index)