Struct Span 

pub struct Span {
    pub offset: usize,
    pub len: usize,
    pub line: u32,
    pub col: u32,
}

Location of a parser error in the original source buffer.

Fields

offset: usize

Byte offset from the start of the input (0-based).

len: usize

Length of the offending substring, in bytes.

line: u32

1-based line number where the error starts.

col: u32

1-based column number where the error starts.

Implementations

impl Span

pub fn from_offset(source: &str, offset: usize, len: usize) -> Self

Computes a Span from an absolute byte offset into source, counting newlines for line/col attribution.

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 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