Enum LexError

#[non_exhaustive]
pub enum LexError {
    UnexpectedInput(String),
    UnterminatedString,
    StringTooLong(usize),
    MalformedEscapeSequence(String),
    MalformedNumber(String),
    MalformedChar(String),
    MalformedIdentifier(String),
    ImproperSymbol(String, String),
    Runtime(String),
}

Error encountered when tokenizing the script text.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

UnexpectedInput(String)

An unexpected symbol is encountered.

UnterminatedString

A string literal is not terminated before a new-line or EOF.

StringTooLong(usize)

An identifier or string literal is longer than the maximum allowed length.

MalformedEscapeSequence(String)

An string/character/numeric escape sequence is in an invalid format.

MalformedNumber(String)

An numeric literal is in an invalid format.

MalformedChar(String)

An character literal is in an invalid format.

MalformedIdentifier(String)

An identifier is in an invalid format.

ImproperSymbol(String, String)

Bad symbol encountered.

Runtime(String)

Runtime error occurred.

Implementations

impl LexError

pub fn into_err(self, pos: Position) -> ParseError

Convert a LexError into a ParseError.

Trait Implementations

impl Clone for LexError

fn clone(&self) -> LexError

Returns a copy 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<(), Error>

Formats the value using the given formatter.

impl Display for LexError

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

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 ParseErrorType

fn from(err: LexError) -> ParseErrorType

Converts to this type from the input type.

impl Hash for LexError

fn hash<__H>(&self, state: &mut __H)

where __H: Hasher,

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 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 Eq for LexError

impl StructuralPartialEq for LexError