Enum ParseError 

pub enum ParseError {
    Lexer(LexerError),
    UnexpectedToken {
        expected: String,
        found: String,
        position: Position,
    },
    UnexpectedEof {
        position: Position,
    },
    ExpectedDirectiveName {
        position: Position,
    },
    MissingSemicolon {
        position: Position,
    },
    UnmatchedCloseBrace {
        position: Position,
    },
    UnclosedBlock {
        position: Position,
    },
    IoError(String),
}

An error that occurs during parsing.

Includes both parse-level errors and forwarded LexerErrors.

Variants

Lexer(LexerError)

A tokenization error propagated from the lexer.

UnexpectedToken

The parser found a different token than expected.

Fields

expected: String

found: String

position: Position

UnexpectedEof

The input ended while the parser still expected more tokens.

Fields

position: Position

ExpectedDirectiveName

An identifier was expected at the start of a directive but not found.

Fields

position: Position

MissingSemicolon

A directive was not terminated with ;.

Fields

position: Position

UnmatchedCloseBrace

A } was found without a matching {.

Fields

position: Position

UnclosedBlock

A { was opened but never closed before end-of-file.

Fields

position: Position

IoError(String)

A file could not be read from disk.

Implementations

impl ParseError

pub fn position(&self) -> Option<Position>

Returns the source position where this error occurred, if available.

Returns None only for IoError which has no source position.

Trait Implementations

impl Clone for ParseError

fn clone(&self) -> ParseError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ParseError

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

Formats the value using the given formatter.

impl Display for ParseError

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

Formats the value using the given formatter.

impl Error for ParseError

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<LexerError> for ParseError

fn from(source: LexerError) -> Self

Converts to this type from the input type.