com.statemachinesystems.util

Class DynamicReference<T>

java.lang.Object

com.statemachinesystems.util.DynamicReference<T>

Type Parameters:

T - the type of value being referenced

public class DynamicReference<T>
extends Object

A dynamically-scoped reference.

Constructor Summary

Constructors

Constructor and Description
DynamicReference(T initialValue) Create a dynamically-scoped reference with the given initial default value.

Method Summary

Modifier and Type	Method and Description
T	get() Retrieve the current value of the reference.
String	toString()
void	withValue(T newValue, Runnable block) Override the value of the reference while executing the given block.
<R> R	withValue(T newValue, Supplier<R> block) Override the value of the reference while executing the given block, returning the block's value.

Methods inherited from class java.lang.Object

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

Constructor Detail

DynamicReference

public DynamicReference(T initialValue)

Create a dynamically-scoped reference with the given initial default value.

Parameters:

initialValue - the initial default value to use

Method Detail

get

public T get()

Retrieve the current value of the reference.

Returns:

the current value of the reference

withValue

public void withValue(T newValue,
                      Runnable block)

Override the value of the reference while executing the given block.

Parameters:

newValue - the overridden value to use within the given block

block - the block to execute

withValue

public <R> R withValue(T newValue,
                       Supplier<R> block)

Override the value of the reference while executing the given block, returning the block's value.

Type Parameters:

R - the return type of the block

Parameters:

newValue - the overridden value to use within the given block

block - the block to execute

Returns:

the value returned by the block

toString

public String toString()

Overrides:

toString in class Object