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

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InvalidToken

Fields

§location: L

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

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UnrecognizedEof

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§location: L

The end of the final token

§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.

Generated by the parser when it encounters an EOF it did not expect.

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UnrecognizedToken

Fields

§token: (L, T, L)

The unexpected token of type T with a span given by the two L values.

§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.

Generated by the parser when it encounters a token it did not expect.

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ExtraToken

Fields

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

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User

Fields

§error: E

Custom error type.

Implementations§

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

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pub fn map_location<LL>(self, op: impl FnMut(L) -> LL) -> ParseError<LL, T, E>

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pub fn map_token<TT>(self, op: impl FnOnce(T) -> TT) -> ParseError<L, TT, E>

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pub fn map_error<EE>(self, op: impl FnOnce(E) -> EE) -> ParseError<L, T, EE>

Trait Implementations§

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

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

Returns a copy of the value. Read more
1.0.0 · source§

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

Performs copy-assignment from source. Read more
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impl<L: Debug, T: Debug, E: Debug> Debug for ParseError<L, T, E>

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

Formats the value using the given formatter. Read more
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impl<L, T, E> Display for ParseError<L, T, E>
where L: Display, T: Display, E: Display,

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

Formats the value using the given formatter. Read more
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impl<L, T, E> Error for ParseError<L, T, E>
where L: Debug + Display, T: Debug + Display, E: Debug + Display,

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fn description(&self) -> &str

👎Deprecated since 1.42.0: use the Display impl or to_string()
1.30.0 · source§

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

The lower-level source of this error, if any. Read more
1.0.0 · source§

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

👎Deprecated since 1.33.0: replaced by Error::source, which can support downcasting
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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. Read more
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impl<L, T, E> From<E> for ParseError<L, T, E>

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fn from(error: E) -> Self

Converts to this type from the input type.
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impl<L: Ord, T: Ord, E: Ord> Ord for ParseError<L, T, E>

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

This method returns an Ordering between self and other. Read more
1.21.0 · source§

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

Compares and returns the maximum of two values. Read more
1.21.0 · source§

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

Compares and returns the minimum of two values. Read more
1.50.0 · source§

fn clamp(self, min: Self, max: Self) -> Self
where Self: Sized + PartialOrd,

Restrict a value to a certain interval. Read more
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impl<L: PartialEq, T: PartialEq, E: PartialEq> PartialEq for ParseError<L, T, E>

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

This method tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl<L: PartialOrd, T: PartialOrd, E: PartialOrd> PartialOrd for ParseError<L, T, E>

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

This method returns an ordering between self and other values if one exists. Read more
1.0.0 · source§

fn lt(&self, other: &Rhs) -> bool

This method tests less than (for self and other) and is used by the < operator. Read more
1.0.0 · source§

fn le(&self, other: &Rhs) -> bool

This method tests less than or equal to (for self and other) and is used by the <= operator. Read more
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fn gt(&self, other: &Rhs) -> bool

This method tests greater than (for self and other) and is used by the > operator. Read more
1.0.0 · source§

fn ge(&self, other: &Rhs) -> bool

This method tests greater than or equal to (for self and other) and is used by the >= operator. Read more
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impl<L: Eq, T: Eq, E: Eq> Eq for ParseError<L, T, E>

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

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

Auto Trait Implementations§

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

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

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

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

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

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> From<!> for T

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fn from(t: !) -> T

Converts to this type from the input type.
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T> ToString for T
where T: Display + ?Sized,

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default fn to_string(&self) -> String

Converts the given value to a String. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.