Enum SyntaxError

pub enum SyntaxError {
    UnexpectedRule {
        expected: Rule,
        actual: Rule,
    },
    ParserError {
        error: Box<Error<Rule>>,
    },
}

A syntax error.

Variants

UnexpectedRule

An unexpected rule was used in FromPair::from_pair.

Example

let cache = Cache::new();
let pairs = Lexer::tokenize(Rule::UnquotedString, "hello, world!");
let pair = pairs.unwrap().next().unwrap();
QuotedString::from_pair(pair, &cache).unwrap_err();

Fields

expected: Rule

actual: Rule

ParserError

The underlying parser encountered an error.

Example

QuotedString::from_str("definitely not a quoted string").unwrap_err();

Fields

error: Box<Error<Rule>>

Trait Implementations

impl Debug for SyntaxError

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

Formats the value using the given formatter.

impl Display for SyntaxError

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

Formats the value using the given formatter.

impl Error for SyntaxError

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<Box<Error<Rule>>> for SyntaxError

fn from(source: Box<PestError<Rule>>) -> Self

Converts to this type from the input type.

impl From<Error<Rule>> for SyntaxError

fn from(error: PestError<Rule>) -> Self

Converts to this type from the input type.

impl From<SyntaxError> for Error

fn from(source: SyntaxError) -> Self

Converts to this type from the input type.

impl PartialEq for SyntaxError

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

impl StructuralPartialEq for SyntaxError