Enum TokenKind 

pub enum TokenKind {
    Keyword,
    Function,
    Type,
    Number,
    String,
    Comment,
    Variable,
    Constant,
    Operator,
}

A coarse token kind. The view layer maps each kind to a colour via theme tokens. We deliberately flatten arborium’s capture-name taxonomy (which has ~50 distinct strings like "keyword.function", "string.special.symbol", …) into a small enum because:

1. A Notion-style code block doesn’t need surgical precision. It needs to be readable at a glance.
2. Mapping every arborium capture to its own CSS variable would explode devup.json with dozens of colour slots that nobody tunes.
3. Colour themes in the wild (One Dark, Dracula, GitHub) group captures into ~8 slots anyway.

Variants

Keyword

fn, let, if, return, language keywords.

Function

Function names at definition or call sites.

Type

Type names, struct names, trait names.

Number

42, 0xff, 3.14.

String

"hello", 'x', template literal bodies.

Comment

// line comments, /* block comments */.

Variable

User-facing identifiers that don’t fit another slot (variables, parameters).

Constant

Built-in constants like true, false, null, None.

Operator

+, =>, ::, punctuation that carries meaning.

Implementations

impl TokenKind

pub const fn as_str(self) -> &'static str

The string handed across the WASM boundary. Kept short and lowercase so the TS side can use them as-is for CSS class suffixes (syntax-keyword, syntax-string, …).

pub fn from_capture(capture: &str) -> Option<Self>

Map a raw arborium capture name (e.g. "keyword.function", "string.special.symbol") to our coarse enum. Unknown captures return None — the caller should skip them so we don’t paint random tokens.

The matching is prefix-based ("keyword.function" → Keyword) because arborium’s capture names are dotted namespaces where the first segment is the most important.

Trait Implementations

impl Clone for TokenKind

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for TokenKind

impl Debug for TokenKind

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Eq for TokenKind

impl PartialEq for TokenKind

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for TokenKind