Struct style::sharing::RevalidationResult

pub struct RevalidationResult {
    pub selectors_matched: SmallBitVec,
    pub relevant_attributes: RelevantAttributes,
}

The results from the revalidation step.

Rather than either:

• Plainly rejecting sharing for elements with different attributes (which would be unfortunate because a lot of elements have different attributes yet those attributes are not style-relevant).

• Having to give up on per-attribute bucketing, which would be unfortunate because it increases the cost of revalidation for pages with lots of global attribute selectors (see bug 1868316).

• We also store the style-relevant attributes for these elements, in order to guarantee that we end up looking at the same selectors.

Fields

selectors_matched: SmallBitVec

A bit for each selector matched. This is sound because we guarantee we look up into the same buckets via the pre-revalidation checks and relevant_attributes.

relevant_attributes: RelevantAttributes

The set of attributes of this element that were relevant for its style.

Trait Implementations

impl Debug for RevalidationResult

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

Formats the value using the given formatter.

impl Default for RevalidationResult

fn default() -> RevalidationResult

Returns the “default value” for a type.

impl PartialEq for RevalidationResult

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

This method tests for self and other values to be equal, and is used by ==.

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

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.