wrong asumption about InputInterface::getArgument() return type in interact()

[nikophil]

Hello,

since this PR, if the config symfony.consoleApplicationLoader is not provided, PHPStan will always consider that every call to $input->getArgument() inside the method interfact() will return null.

Maybe some guard condition should be added gefore adding NullType.

I'm willing to fix this if you think it is relevant

[ondrejmirtes]

/cc @VincentLanglet

[VincentLanglet]

PHPStan will always consider that every call to $input->getArgument() inside the method interfact() will return null.

Maybe some guard condition should be added gefore adding NullType.

I made some new tries and

$this->addArgument('task', InputArgument::REQUIRED); // Possibly null in interact
$this->addArgument('task', InputArgument::REQUIRED | InputArgument::ARRAY); // [] in interact
$this->addArgument('task', InputArgument::REQUIRED, default: 'foo'); // Not possible
$this->addArgument('task', InputArgument::OPTIONAL); // Possibly null in interact
$this->addArgument('task', InputArgument::OPTIONAL, default: 'foo'); // Not null in interact

And also, indeed, we need to add Null only if some types were already inferred.

I opened #397

[ondrejmirtes]

Please test 1.4.4 https://github.com/phpstan/phpstan-symfony/releases/tag/1.4.4 to see whether it fixes your problem.

[nikophil]

problem fixed ✔️

thanks!

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