Struct LexError 

pub struct LexError {
    pub message: String,
    pub offset: usize,
    pub len: usize,
    pub line_column: Option<LineColumn>,
}

A lexical diagnostic (e.g. an unterminated literal), located at a byte span.

Fields

message: String

offset: usize

Byte offset into the source where the offending token began.

len: usize

Byte length of the offending token’s text, so a diagnostic can underline the whole token rather than a single character. May be 0 for a zero-width point at end of input.

line_column: Option<LineColumn>

One-based line/column position, when the full source text was available.

Implementations

impl LexError

pub fn range(&self) -> Range<usize>

The byte range offset..offset + len this error covers in the source.

Trait Implementations

impl Clone for LexError

fn clone(&self) -> LexError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for LexError

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

Formats the value using the given formatter.

impl Display for LexError

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

Formats the value using the given formatter.

impl Eq for LexError

impl Error for LexError

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0:

use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type-based access to context intended for error reports.

impl PartialEq for LexError

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for LexError