Anonymous Class parentheses check for PER 2.0

[rikvdh]

For PER 2.0 we need a sniff to check the absence of parentheses when no arguments are needed for an anonymous class.

8. Anonymous Classes¶

...

If the anonymous class has no arguments, the () after class MUST be omitted.

The current existing sniff for 'anonymous classes' (PSR12.Classes.AnonClassDeclaration) could be extended with an configuration option. But maybe this specific behavior is easily checked in a new Sniff as well.

• [X] I have read the Contribution Guidelines and this is not a support question.
• [ ] I intend to create a pull request to implement this feature.

[jrfnl]

@rikvdh Please add a code sample of the desired behaviour (and what's not working).

[rikvdh]

This is invalid, the parentheses are not allowed there:

<?php

$foo = new class() {};

Valid should be:

<?php

$foo = new class {};

This is currently not covered by any sniff.

[jrfnl]

Confirmed for PHPCS. For what it's worth, PHPCSExtra does contain a sniff for this: Universal.Classes.DisallowAnonClassParentheses.

[rikvdh]

Ok, I've overlooked this one. We'll go with this one for now.. 👍