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Add wither behavior with PHP8 static return type #13619

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merged 1 commit into from
Nov 5, 2020
Merged

Add wither behavior with PHP8 static return type #13619

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19 changes: 16 additions & 3 deletions service_container/calls.rst
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Original file line number Diff line number Diff line change
Expand Up @@ -90,9 +90,6 @@ instead of mutating the object they were called on::
{
private $logger;

/**
* @return static
*/
public function withLogger(LoggerInterface $logger)
{
$new = clone $this;
Expand Down Expand Up @@ -146,3 +143,19 @@ The configuration to tell the container it should do so would be like:

$container->register(MessageGenerator::class)
->addMethodCall('withLogger', [new Reference('logger')], true);

If autowire is enabled, you can also use annotations; with the previous exemple it would be::

/**
* @required
* @return static
*/
public function withLogger(LoggerInterface $logger)
{
$new = clone $this;
$new->logger = $logger;

return $new;
}

You can also leverage the PHP8 ``static`` return type instead of the ``@return static`` annotation. Note if you don't want a method with a PHP8 ``static`` return type and a ``@required`` annotation to behave as a wither, you can add a ``@return $this`` annotation to disable the *returns clone* feature.