Enum TextPos 

pub enum TextPos {
    Char(usize),
    Line(usize),
    End,
}

A position in the text for the bounds of a rewrite range.

Resolves to a character index (0-based) for the half-open range [from, to). A bare usize is treated as a character index (via From<usize>); [line] sets the start of a line, infinite — the end of the text.

Variants

Char(usize)

A character index (0-based, Unicode scalar). Clamped to [0, length].

Line(usize)

The start of line n (0-based) — the boundary before its first character. Lines are separated by \n. An index past the last line is the end of the text.

End

The end of the text. Valid primarily as to (for from it equals the length, i.e. an empty range at the end). Constructed via infinite.

Trait Implementations

impl Clone for TextPos

fn clone(&self) -> TextPos

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for TextPos

impl Debug for TextPos

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

Formats the value using the given formatter.

impl Eq for TextPos

impl From<usize> for TextPos

fn from(i: usize) -> Self

Converts to this type from the input type.

impl PartialEq for TextPos

fn eq(&self, other: &TextPos) -> 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 StructuralPartialEq for TextPos