Struct CssParser 

pub struct CssParser { /* private fields */ }

Parser for CSS files.

Implementations

impl CssParser

pub fn new() -> Self

Create a new CSS parser.

pub fn parse(&mut self, css_content: &str) -> Result<WebUIFragmentRecords>

Parse CSS content and return fragments.

pub fn process_css( &mut self, css_content: &str, fragments: &mut WebUIFragmentRecords, ) -> Result<()>

Process CSS content and merge it into fragments.

pub fn parse_inline_css(&mut self, style_content: &str) -> Result<String>

Parse inline CSS from style tags in HTML.

pub fn extract_tokens(&mut self, css_content: &str) -> Result<HashSet<String>>

Extract CSS custom property token names used via var() in the given CSS.

Returns a set of variable names (without the -- prefix) that are referenced through var(--name) calls. Variables that are only defined (e.g., --bar: 12px) in the same CSS are excluded.

Handles nested fallbacks: var(--a, var(--b, var(--c))) yields {"a", "b", "c"} because each nested var() is a separate call_expression in the tree-sitter CSS AST.

pub fn extract_definitions( &mut self, css_content: &str, ) -> Result<HashSet<String>>

Extract CSS custom property definitions from the given CSS.

Returns a set of variable names (without -- prefix) that are defined via --name: value declarations. This is used to exclude application-level token definitions (e.g., from <style> in the entry HTML) from the hoisted token set.

pub fn extract_tokens_and_definitions( &mut self, css_content: &str, ) -> Result<(HashSet<String>, HashSet<String>)>

Extract both token usages and definitions in a single parse.

Returns (tokens, definitions) where:

• tokens: var() usages with locally-defined properties already excluded
• definitions: all custom property definitions (for global filtering)

Prefer this over calling extract_tokens + extract_definitions separately on the same CSS content to avoid redundant tree-sitter parses.

Trait Implementations

impl Debug for CssParser

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

Formats the value using the given formatter.

impl Default for CssParser

fn default() -> Self

Returns the “default value” for a type.