This method is the same as `DOMString::from` with a `String` argument
and `From` and `Into` are preferred when writing modern Rust.
Testing: This should not change behavior and is thus covered by existing
tests.
Signed-off-by: Martin Robinson <mrobinson@igalia.com>
- Use modern Rust conveniences such as `unwrap_or_default`
- Unabbreviate `attr`
- Unify the lowercase ASCII name assertion and make it a debug assertion
- Use `unreachable!` instead of panic
- Expose two attribute getters that follow the behavior of two
specification concepts and what we expect internally in Servo:
- One that takes a namespace, but does not require lowercase attribute
names. ([specification
concept](https://dom.spec.whatwg.org/#concept-element-attributes-get-by-namespace>))
- One that does not take a namespace, but does require lowercase
attribute names. ([specification
concept](https://dom.spec.whatwg.org/#concept-element-attributes-get-by-name))
Testing: This should not really change behavior so should be covered by
existing tests.
Signed-off-by: Martin Robinson <mrobinson@igalia.com>
This reduces code duplication in the callers.
Testing: This is a just a refactor, so no tests are needed.
Fixes: #11280.
Signed-off-by: Martin Robinson <mrobinson@igalia.com>
