Attributes

[KapitanOczywisty]

This is implementation of Attributes added in PHP 8.0. However documentation for this feature is rather bad, so I'd advice you to use sth like https://3v4l.org/ to determinate how this feature really works.

Implemented:

• argument-less attribute #[MyAttribute]
• attribute with arguments #[MyAttribute(true)]
• attribute with named arguments #[MyAttribute(name:'Bob')]
• namespaced attributes #[\Ye\Old\Attribute]
• multiple attributes #[A,B,C]
• multilined attributes

#[
A,
B(true)
]

• anonymous class attributes (single-line only) new #[MyAttribute] class {}, also it's valid to write new#[MyAttribute]class{}
• Attribute as class name, for use as argument #[Attribute(Attribute::TARGET_CLASS)]
• test spec

Scopes

• meta.attribute.php for whole #[....]
• support.attribute.php for attribute name, w/ namespace scopes like in classes
• support.attribute.builtin.php for Attribute and future builtins
• arguments are the same as in function call

Not implemented

• multilined attributes for anonymous classes - I'm not sure if I should implement this, since it would need some trickery to add with TM grammar (feedback is welcome)

[KapitanOczywisty]

I've removed complicated look-behind. As far I'm concerned, there is no case where this could backfire, but I could be wrong.

[KapitanOczywisty]

@sadick254 ready for review 😃

[sadick254]

Looks great 👍