Adding support for OptionsResolver component

[benjaminmal]

It will be nice to support the OptionsResolver component. By supporting I mean:

• Resolving the type / prototype of each defined options
• Check if the values given in the options array match the allowed types / values
• Check if there are missing required options
• Check if the user use deprecated options
• Check if the user use the correct object type hinting when using a closure. Given the context, OptionsResolver or Options.
• Resolve the pure array keys and value types (nowaday there are some Argument of an invalid type mixed supplied for foreach, only iterables are supported. or Cannot access offset '{offset}' on mixed. and many others errors)

What do you think about that?

[ondrejmirtes]

Feel free to modernize the extension and contribute it here 😊

[benjaminmal]

@ondrejmirtes I will try to work on it when I'll have time to :)

[tom-combet]

I'm also concerned, I'd like to contribute to this!

@ondrejmirtes I forked and cloned the repo but I'm a bit lost: classes from PHPStan are missing so I get errors in VSCode (Undefined type 'PHPStan\Testing\TypeInferenceTestCase'. for instance). Therefore, I don't benefit from the IDE.

Is it the good way to start developing on phpstan (clone + composer install)?

[ondrejmirtes]

@tom-combet If you use PhpStorm IDE then the classes can be seen. They're defined inside phpstan.phar in vendor/phpstan/phpstan.