a7882cfeb9
To support visited styles, we match and cascade a separate set of styles any time we notice that an element has a relevant link. The visited rules and values are held in `ComputedStyle` alongside the regular rules and values, which simplifies supporting various APIs like `cascade_primary_and_pseudos` which expect easy access to previously matched rules. To simplify passing the additional values around, an additional reference to the visited `ComputedValues` is placed inside the regular `ComputedValues`. MozReview-Commit-ID: 2ebbjcfkfWf
rust-selectors
CSS Selectors library for Rust. Includes parsing and serilization of selectors, as well as matching against a generic tree of elements. Pseudo-elements and most pseudo-classes are generic as well.
Warning: breaking changes are made to this library fairly frequently (13 times in 2016, for example). However you can use this crate without updating it that often, old versions stay available on crates.io and Cargo will only automatically update to versions that are numbered as compatible.
To see how to use this library with your own tree representation,
see Kuchiki’s src/select.rs.
(Note however that Kuchiki is not always up to date with the latest rust-selectors version,
so that code may need to be tweaked.)
If you don’t already have a tree data structure,
consider using Kuchiki itself.