Enum lalrpop_util::ParseError

pub enum ParseError<L, T, E> {
    InvalidToken {
        location: L,
    },
    UnrecognizedToken {
        token: Option<(L, T, L)>,
        expected: Vec<String>,
    },
    ExtraToken {
        token: (L, T, L),
    },
    User {
        error: E,
    },
}

Variants

InvalidToken

Generated by the parser when it encounters a token (or EOF) it did not expect.

Fields of InvalidToken

location: L

UnrecognizedToken

Generated by the parser when it encounters a token (or EOF) it did not expect.

Fields of UnrecognizedToken

token: Option<(L, T, L)>

If this is Some, then an unexpected token of type T was observed, with a span given by the two L values. If this is None, then EOF was observed when it was not expected.

expected: Vec<String>

The set of expected tokens: these names are taken from the grammar and hence may not necessarily be suitable for presenting to the user.

ExtraToken

Generated by the parser when it encounters additional, unexpected tokens.

Fields of ExtraToken

token: (L, T, L)

User

Custom error type.

Fields of User

error: E

Methods

impl<L, T, E> ParseError<L, T, E>

pub fn map_location<F, LL>(self, op: F) -> ParseError<LL, T, E> where     F: Fn(L) -> LL,

pub fn map_token<F, TT>(self, op: F) -> ParseError<L, TT, E> where     F: Fn(T) -> TT,

pub fn map_error<F, EE>(self, op: F) -> ParseError<L, T, EE> where     F: Fn(E) -> EE,

Trait Implementations

impl<L: Eq, T: Eq, E: Eq> Eq for ParseError<L, T, E>

impl<L: PartialOrd, T: PartialOrd, E: PartialOrd> PartialOrd<ParseError<L, T, E>> for ParseError<L, T, E>

fn partial_cmp(&self, other: &ParseError<L, T, E>) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &ParseError<L, T, E>) -> bool

This method tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &ParseError<L, T, E>) -> bool

This method tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &ParseError<L, T, E>) -> bool

This method tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &ParseError<L, T, E>) -> bool

This method tests greater than or equal to (for self and other) and is used by the >= operator.

impl<L: PartialEq, T: PartialEq, E: PartialEq> PartialEq<ParseError<L, T, E>> for ParseError<L, T, E>

fn eq(&self, other: &ParseError<L, T, E>) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &ParseError<L, T, E>) -> bool

This method tests for !=.

impl<L: Clone, T: Clone, E: Clone> Clone for ParseError<L, T, E>

fn clone(&self) -> ParseError<L, T, E>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<L: Ord, T: Ord, E: Ord> Ord for ParseError<L, T, E>

fn cmp(&self, other: &ParseError<L, T, E>) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

Compares and returns the minimum of two values.

impl<L: Debug, T: Debug, E: Debug> Debug for ParseError<L, T, E>

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

Formats the value using the given formatter.

impl<L, T, E> Display for ParseError<L, T, E> where     L: Display,     T: Display,     E: Display,

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

Formats the value using the given formatter.

impl<L, T, E> Error for ParseError<L, T, E> where     L: Debug + Display,     T: Debug + Display,     E: Debug + Display,

fn description(&self) -> &str

This method is soft-deprecated.

fn cause(&self) -> Option<&dyn Error>

Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

The lower-level cause of this error, if any.

fn source(&self) -> Option<&(dyn Error + 'static)>

The lower-level source of this error, if any.