Struct Span 

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

Byte-range + line/column position within a source file.

Fields

start: usize

Byte offset of the first character (inclusive).

end: usize

Byte offset past the last character (exclusive).

line: u32

1-based line number.

col: u32

1-based column number (byte-based; see UTF-8 TODO above).

Implementations

impl Span

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

Create a new span from raw fields.

pub fn dummy() -> Self

Placeholder span for generated nodes that have no source location.

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

Merge two spans into one that covers both.

The column of the merged span comes from whichever span starts first in the source (smaller start offset).

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 Display for Span

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

Formats the value using the given formatter.

impl Hash for Span

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 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