Enum LexError 

pub enum LexError {
    UnterminatedString {
        start: Position,
    },
    InvalidEscape {
        escape: char,
        pos: Position,
    },
    InvalidNumber {
        text: String,
        pos: Position,
    },
    InvalidIdentifier {
        text: String,
        pos: Position,
    },
    UnexpectedByte {
        byte: u8,
        pos: Position,
    },
    InvalidUtf8 {
        pos: Position,
    },
}

Errors produced by tokenize.

Variants

UnterminatedString

A "-quoted string was not terminated before end-of-input.

Fields

start: Position

Position of the opening ".

InvalidEscape

A \x escape sequence used an unsupported character.

Fields

escape: char

The character after the backslash.

pos: Position

Position of the backslash.

InvalidNumber

A numeric token could not be parsed.

Fields

text: String

The raw text.

pos: Position

Start position.

InvalidIdentifier

An identifier or kind annotation is ill-formed.

Fields

text: String

The raw text.

pos: Position

Start position.

UnexpectedByte

A byte that cannot start any token (e.g. stray punctuation).

Fields

byte: u8

The offending byte.

pos: Position

Start position.

InvalidUtf8

Input was not valid UTF-8 at the cursor.

Fields

pos: Position

Position of the bad byte.

Trait Implementations

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, __formatter: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

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 From<LexError> for ParseError

fn from(source: LexError) -> Self

Converts to this type from the input type.

impl PartialEq for LexError

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