Swift: Major improvements

[RunDevelopment]

I made a number of changes to Swift:

1. Added support for nested comment (/* /* foo */ */).
2. Added support for multi-line strings (""" foo """) and raw strings (#" foo "#)
3. Removed single-quoted strings. Swift does not and has never supported single-quoted strings.
4. Correct tokenization for all operators + punctuation.
5. Added "omit" rule for _.
6. Added support for statement labels. (foo: while ...)
7. Removed builtin functions/properties. They just looked out of place and provided no real value.
8. Improved function detection.
9. Naming-based type detection. All type-like structures (classes, structs, protocols, etc.) typically have UpperCamelCase names.

Edit:

10. Support directives.
11. Support all/custom attributes.
12. Updated keywords.

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@AvdLee
I hope this helps with #3021.

Also, I'm not familiar with Swift and not sure about the naming-based class detection. Can we assume that everything starting with an upper-case letter and containing a lower-case letter is a class name?

[github-actions]

JS File Size Changes (gzipped)

A total of 2 files have changed, with a combined diff of +211 B (+6.4%).

file	master	pull	size diff	% diff
components/prism-swift.min.js	1.06 KB	1.28 KB	+216 B	+20.4%
plugins/autoloader/prism-autoloader.min.js	2.24 KB	2.23 KB	-5 B	-0.2%

Generated by 🚫 dangerJS against 8c70ed8

[AvdLee]

Also, I'm not familiar with Swift and not sure about the naming-based class detection. Can we assume that everything starting with an upper-case letter and containing a lower-case letter is a class name?

It's fair to say yes, but Swift doesn't enforce us doing so. I haven't seen any code examples though in which developers defined classes starting with a lowercase!

[AvdLee]

@AvdLee
I hope this helps with #3021.

Really impressive PR! Thanks a lot, I'm learning a lot about this library as well now 🙂
I'm sure we're getting closer and closer to better support!

Btw, if you like to explore how Prism is behaving with Swift, you can check out my articles here: avanderlee.com
All highlighted code is backed by Prism 💪

[RunDevelopment]

@AvdLee I think I got everything from #3021 now.

Also, in your article about dependency injection, you presented this attribute: @Injected(\.networkProvider). What does the \. mean?

[AvdLee]

@AvdLee I think I got everything from #3021 now.

Dang, that's amazing! Thanks a ton 💪

Also, in your article about dependency injection, you presented this attribute: @injected(.networkProvider). What does the . mean?

It's an accessor to a key path reference. See "Key-Path Expression" in this document: https://docs.swift.org/swift-book/ReferenceManual/Expressions.html

[RunDevelopment]

It's an accessor to a key path reference.

Seems like I missed that part while scanning through the docs. Thank you!