Function select

css-inline/src/html/iter.rs:31–59

(
    document: &'a Document,
    selectors: &'b str,
    caches: &'c mut SelectorCaches,
)

/// Compile selectors from a string and create an element iterator that yields elements matching these selectors.
#[inline]
pub(crate) fn select<'a, 'b, 'c>(
    document: &'a Document,
    selectors: &'b str,
    caches: &'c mut SelectorCaches,
) -> Result<Select<'a, 'c>, ParseError<'b>> {
    Selectors::compile(selectors).map(|selectors| {
        // Only use indexes if they were built during parsing
        let source = if document.has_indexes() {
            match selectors.anchor() {
                SelectorAnchor::Id(id) => ElementSource::Single(document.get_by_id(id.as_inner())),
                SelectorAnchor::Class(class) => {
                    ElementSource::Slice(document.get_by_class(class.as_inner()).iter())
                }
                SelectorAnchor::Tag(tag) => {
                    ElementSource::Slice(document.get_by_tag(tag.as_inner()).iter())
                }
                SelectorAnchor::None => ElementSource::Slice(document.elements.iter()),
            }
        } else {
            ElementSource::Slice(document.elements.iter())
        };
        Select {
            document,
            caches,
            source,
            selectors,
        }
    })
}

/// An element iterator adaptor that yields elements matching given selectors.
pub(crate) struct Select<'a, 'c> {