Struct Cursor 

pub struct Cursor {
    pub id: CaretId,
    pub anchor: Position,
    pub head: Position,
}

A single cursor — anchor + head. Visual selection is the range between them. When equal, it’s just an insertion point.

Fields

id: CaretId

anchor: Position

head: Position

Implementations

impl Cursor

pub const fn new(id: CaretId, anchor: Position, head: Position) -> Self

pub fn at(id: CaretId, p: Position) -> Self

pub fn range(self) -> Range

The selected range — normalized so start ≤ end.

pub const fn is_caret(self) -> bool

pub const fn extend_to(self, p: Position) -> Self

Move the head to p, leaving the anchor fixed — grows the selection.

pub const fn collapse(self) -> Self

Collapse to the head — becomes a pure caret.

Trait Implementations

impl Clone for Cursor

fn clone(&self) -> Cursor

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Cursor

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

Formats the value using the given formatter.

impl Default for Cursor

fn default() -> Cursor

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for Cursor

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Hash for Cursor

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl JsonSchema for Cursor

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 Cursor

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Serialize for Cursor

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Copy for Cursor

impl Eq for Cursor

impl StructuralPartialEq for Cursor