Struct Span 

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

A span of source code (start to end position).

Fields

start: Position

Start position (inclusive)

end: Position

End position (exclusive)

Implementations

impl Span

pub fn new() -> Self

Create an empty span at the default position.

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

Create a span from start to end positions.

pub fn at(pos: Position) -> Self

Create a span covering a single position.

pub fn merge(self, other: Span) -> Self

Merge two spans into one covering both.

pub fn line(&self) -> usize

Get the starting line number.

Trait Implementations

impl Clone for Span

fn clone(&self) -> Span

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Span

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

Formats the value using the given formatter.

impl Default for Span

fn default() -> Span

Returns the “default value” for a type.

impl Display for Span

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

Formats the value using the given formatter.

impl PartialEq for Span

fn eq(&self, other: &Span) -> 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 Span

impl Eq for Span

impl StructuralPartialEq for Span