Struct SelectorExplanation 

pub struct SelectorExplanation {
    pub source: String,
    pub specificity: Specificity,
    pub description: String,
    pub performance_notes: Vec<String>,
    pub hints: Vec<OptimizationHint>,
    pub estimated_matches: Option<usize>,
}

Detailed explanation of a CSS selector.

Fields

source: String

The original selector string.

specificity: Specificity

Parsed specificity.

description: String

Human-readable description of what the selector matches.

performance_notes: Vec<String>

Performance characteristics.

hints: Vec<OptimizationHint>

Optimization suggestions.

estimated_matches: Option<usize>

Estimated match count (if document provided).

Implementations

impl SelectorExplanation

pub fn analyze(selector: &CompiledSelector) -> Self

Creates a new selector explanation by analyzing the selector.

Performance

This function is O(n) where n is the selector length. Target: <1ms for typical selectors.

pub fn analyze_with_document( selector: &CompiledSelector, doc: &Document, ) -> Self

Creates explanation with estimated match count from a document.

pub fn format(&self) -> String

Formats the explanation for human-readable output.

Trait Implementations

impl Clone for SelectorExplanation

fn clone(&self) -> SelectorExplanation

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SelectorExplanation

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

Formats the value using the given formatter.