diff options
Diffstat (limited to 'components/selectors/tree.rs')
| -rw-r--r-- | components/selectors/tree.rs | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/components/selectors/tree.rs b/components/selectors/tree.rs index 52599893d2f..611e40d6027 100644 --- a/components/selectors/tree.rs +++ b/components/selectors/tree.rs @@ -47,9 +47,13 @@ pub trait Element: Sized + Clone + Debug { /// /// This is guaranteed to be called in a pseudo-element. fn pseudo_element_originating_element(&self) -> Option<Self> { + debug_assert!(self.is_pseudo_element()); self.parent_element() } + /// Whether we're matching on a pseudo-element. + fn is_pseudo_element(&self) -> bool; + /// Skips non-element nodes fn prev_sibling_element(&self) -> Option<Self>; |