Struct HighlightMask 

pub struct HighlightMask { /* private fields */ }

Which highlight sessions a particular view renders.

Two panes over one shared document can carry different find queries, so “which highlights to show” is a property of the view, not the document. A snapshot is built under a mask; only the sessions the mask admits contribute spans, and the effective HighlighterKind is the join over just those.

The default (HighlightMask::all) shows every session — the behaviour of the old snapshot_flow(). HighlightMask::none shows none — the old snapshot_flow_without_highlights(), and it must stay exactly as cheap, since every read-only preview pane uses it.

Implementations

impl HighlightMask

pub fn all() -> Self

Show every session attached to the document. The default, and the shape of a plain snapshot_flow().

pub fn none() -> Self

Show no highlights at all — as cheap as the old show_highlights = false.

pub fn only(ids: impl IntoIterator<Item = SessionId>) -> Self

Show only the named sessions (e.g. the shared syntax + spell sessions plus this view’s own find session).

pub fn with(self, id: SessionId) -> Self

Add a session to a mask that already names some (a no-op on HighlightMask::all, which already admits everything).

Trait Implementations

impl Clone for HighlightMask

fn clone(&self) -> HighlightMask

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for HighlightMask

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

Formats the value using the given formatter.

impl Default for HighlightMask

fn default() -> HighlightMask

Returns the “default value” for a type.

impl Eq for HighlightMask

impl PartialEq for HighlightMask

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for HighlightMask