Enum OldColumnOffsetRef 

pub enum OldColumnOffsetRef {
    Current,
    Column(OldColumnIndex),
    Trailing,
}

Legacy column offset-line selector.

Offset APIs operate on column boundary lines. Concrete column indices select the start line for that column, while OldColumnOffsetRef::Trailing selects the right-most line after the final column.

Variants

Current

Use the current legacy column boundary.

Column(OldColumnIndex)

Use the start boundary for a concrete legacy column.

Trailing

Use the right-most boundary after the final legacy column.

Implementations

impl OldColumnOffsetRef

pub const CURRENT: Self = Self::Current

Current legacy column boundary.

pub const TRAILING: Self = Self::Trailing

Right-most boundary after the final legacy column.

pub const fn column(index: OldColumnIndex) -> Self

Select the start boundary for a concrete legacy column.

Trait Implementations

impl Clone for OldColumnOffsetRef

fn clone(&self) -> OldColumnOffsetRef

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for OldColumnOffsetRef

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

Formats the value using the given formatter.

impl Default for OldColumnOffsetRef

fn default() -> OldColumnOffsetRef

Returns the “default value” for a type.

impl From<OldColumnIndex> for OldColumnOffsetRef

fn from(index: OldColumnIndex) -> Self

Converts to this type from the input type.

impl From<usize> for OldColumnOffsetRef

fn from(index: usize) -> Self

Converts to this type from the input type.

impl Hash for OldColumnOffsetRef

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 PartialEq for OldColumnOffsetRef

fn eq(&self, other: &OldColumnOffsetRef) -> 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 Copy for OldColumnOffsetRef

impl Eq for OldColumnOffsetRef

impl StructuralPartialEq for OldColumnOffsetRef