Struct Span 

pub struct Span {
    pub start: usize,
    pub end: usize,
    pub line: u32,
    pub column: u32,
}

A span in the source code, tracking byte offsets and line/column.

Fields

start: usize

Start byte offset (inclusive).

end: usize

End byte offset (exclusive).

line: u32

Line number (1-indexed).

column: u32

Column number (1-indexed, in characters not bytes).

Implementations

impl Span

pub fn new(start: usize, end: usize, line: u32, column: u32) -> Self

Create a new span.

pub fn dummy() -> Self

Create a dummy span for generated code.

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

Merge two spans into one that covers both.

pub fn len(&self) -> usize

Length in bytes.

pub fn is_empty(&self) -> bool

Check if span is empty.

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