Class | Sass::Selector::Universal |
In: |
lib/sass/selector.rb
|
Parent: | Simple |
namespace | [R] |
The selector namespace. `nil` means the default namespace, `[""]`
means no namespace, `["*"]` means any namespace.
@return [Array<String, Sass::Script::Node>, nil] |
Unification of a universal selector is somewhat complicated, especially when a namespace is specified. If there is no namespace specified or any namespace is specified (namespace `"*"`), then `sel` is returned without change (unless it‘s empty, in which case `"*"` is required).
If a namespace is specified but `sel` does not specify a namespace, then the given namespace is applied to `sel`, either by adding this {Universal} selector or applying this namespace to an existing {Element} selector.
If both this selector and `sel` specify namespaces, those namespaces are unified via {Simple#unify_namespaces} and the unified namespace is used, if possible.
@todo There are lots of cases that this documentation specifies;
make sure we thoroughly test **all of them**.
@todo Keep track of whether a default namespace has been declared
and handle namespace-unspecified selectors accordingly.
@todo If any branch of a CommaSequence ends up being just `"*"`,
then all other branches should be eliminated
@see Selector#unify