Struct Range 

pub struct Range {
    pub start: Position,
    pub end: Position,
}

A half-open [start, end) range expressed as two Positions.

The vim-grammar Range (line ranges, marks, patterns, :%, Selection, custom) lives in lattice-grammar; this is the protocol-level structural range used by edits and decorations.

start is included, end is not, so start == end is a zero-width range (an insertion point). The constructors do not order or validate the endpoints; a well-formed range has start <= end, and consumers reject an inverted one (ProtocolError::InvalidRange).

Examples

use lattice_protocol::{Position, Range};

// The first three bytes of line 0 — "abc" in "abcdef".
let abc = Range::new(Position::new(0, 0), Position::new(0, 3));
assert!(!abc.is_empty());

// A range may span lines; `end` is exclusive.
let two_lines = Range::new(Position::new(1, 4), Position::new(2, 0));
assert_eq!(two_lines.end.line, 2);

// An insertion point.
assert!(Range::empty(Position::new(3, 1)).is_empty());

Fields

start: Position

First position inside the range (inclusive).

end: Position

First position past the range (exclusive).

Implementations

impl Range

pub const fn new(start: Position, end: Position) -> Self

The range [start, end). Endpoints are stored as given.

pub const fn empty(at: Position) -> Self

A zero-width range at at — where an insert goes.

pub fn is_empty(&self) -> bool

true when start == end: the range covers no bytes.

Trait Implementations

impl Clone for Range

fn clone(&self) -> Range

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Range

impl Debug for Range

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for Range

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for Range

impl PartialEq for Range

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for Range

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 Range