Struct Cursors 

pub struct Cursors { /* private fields */ }

The editor’s cursor state — the single typed home for “where the caret(s) are”.

Phase 1 (today): holds exactly one primary Position. The mutation surface (primary / set_primary / map_primary) is the same shape a single bare Position had, so callers route through it without behavioral change — but now there is ONE typed place that owns cursor state instead of a loose Position field beside an unused multi-caret Selection. That removes the dual-source-of-truth that would desync the moment multi-cursor lands.

Phase 2 (later): the inner representation grows to { primary: Position, secondaries: Vec<Position> } (or wraps Selection directly). Because every caller already goes through this newtype’s surface, that growth is a localized change here — not a fleet-wide rewrite of self.cursor.line reads.

Implementations

impl Cursors

pub const fn single(p: Position) -> Self

One cursor at p.

pub const fn primary(&self) -> Position

The primary caret position — the single read accessor every renderer and motion path uses.

pub const fn set_primary(&mut self, p: Position)

Move the primary caret to p. The single write path — set_cursor in the runtime routes here, keeping clamp + viewport-follow as the only way the cursor changes.

pub fn map_primary(&mut self, f: impl FnOnce(Position) -> Position)

Transform the primary caret in place.

pub const fn count(&self) -> usize

Number of carets — always 1 in phase 1; the seam multi-cursor grows at.

Trait Implementations

impl Clone for Cursors

fn clone(&self) -> Cursors

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Cursors

impl Debug for Cursors

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

Formats the value using the given formatter.

impl Default for Cursors

fn default() -> Cursors

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for Cursors

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for Cursors

impl From<Position> for Cursors

fn from(p: Position) -> Self

Converts to this type from the input type.

impl JsonSchema for Cursors

fn schema_name() -> String

The name of the generated JSON Schema.

fn schema_id() -> Cow<'static, str>

Returns a string that uniquely identifies the schema produced by this type.

fn json_schema(generator: &mut SchemaGenerator) -> Schema

Generates a JSON Schema for this type.

fn is_referenceable() -> bool

Whether JSON Schemas generated for this type should be re-used where possible using the $ref keyword.

impl PartialEq for Cursors

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for Cursors

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for Cursors