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Previously, PseudoClassFunction arguments were simply a copy of the Function token arguments. So from a selector of ".flex:not(div, span.wide, .hidden)", the not function would have these arguments in the AST:

[(ident-token "div"),
 (comma-token),
 (whitespace-token " "),
 (ident-token "span"),
 (delim-token "."),
 (ident-token "wide"),
 (comma-token),
 (whitespace-token " "),
 (delim-token "."),
 (ident-token "hidden")]

Now the arguments are parsed, so that a PseudoClassFunction is represented fully in the AST as something like:

(pseudo-class-selector
  (pseudo-class-function
    "not"
    (arguments
      (type-selector (wqname (ident-token "div"))),
      (compound-selector
        (type (type-selector (wqname (ident-token "span"))))
        (subclasses
          (class-selector (ident-token "wide"))
        )
        (pseudo-elements)
      ),
      (class-selector (ident-token "hidden"))
    )
  )
)

so that the AST doesn't just contain tokens. Previously the arguments
were something like

```
[(ident-token "div"),
 (comma-token),
 (whitespace-token " "),
 (ident-token "span"),
 (delim-token "."),
 (ident-token "wide"),
 (comma-token),
 (whitespace-token " "),
 (delim-token "."),
 (ident-token "hidden")]
```

Now those tokens will be represented in the AST as

```
[(type-selector (wqname (ident-token "div"))),
 (compound-selector
   (type (type-selector (wqname (ident-token "span"))))
   (subclasses
     (class-selector (ident-token "wide"))
   )
   (pseudo-elements)
 ),
 (class-selector (ident-token "hidden"))]
```
@kddnewton kddnewton merged commit 5b84ed8 into ruby-syntax-tree:main Jun 28, 2024
@kddnewton
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This is a clever way to do it!

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2 participants