Enum LexerError

pub enum LexerError {
    UnknownCharacter(char),
    UnexpectedCharacter(char),
    UnterminatedString,
    UnknownCharacterInString(char),
    UnknownEscapeSequence(String),
    UnexpectedEndOfFile,
    InvalidNumber,
}

Error when tokenizing the input source

Variants

UnknownCharacter(char)

An unknown character was found

Unknown characters are characters that do not occur anywhere in the GraphQL language, such as ? or %.

UnexpectedCharacter(char)

An unexpected character was found

Unexpected characters are characters that do exist in the GraphQL language, but is not expected at the current position in the document.

UnterminatedString

An unterminated string literal was found

Apart from forgetting the ending ", terminating a string within a Unicode escape sequence or having a line break in the string also causes this error.

UnknownCharacterInString(char)

An unknown character in a string literal was found

This occurs when an invalid source character is found in a string literal, such as ASCII control characters.

UnknownEscapeSequence(String)

An unknown escape sequence in a string literal was found

Only a limited set of escape sequences are supported, this is emitted when e.g. "\l" is parsed.

UnexpectedEndOfFile

The input source was unexpectedly terminated

Emitted when the current token requires a succeeding character, but the source has reached EOF. Emitted when scanning e.g. "1.".

InvalidNumber

An invalid number literal was found

Trait Implementations

impl Clone for LexerError

fn clone(&self) -> LexerError

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for LexerError

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

Formats the value using the given formatter.

impl Display for LexerError

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

Formats the value using the given formatter.

impl Error for LexerError

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 LexerError

fn eq(&self, other: &LexerError) -> 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 LexerError

impl StructuralPartialEq for LexerError