lalrpop_util

Enum ParseError

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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,
    },
}

Variants§

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InvalidToken

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

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§location: L
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UnrecognizedEof

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

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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.

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UnrecognizedToken

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

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§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.

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ExtraToken

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

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User

Custom error type.

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§error: E

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)>

Returns 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,

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

Tests for self and other values to be equal, and is used by ==.
1.0.0 · source§

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

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

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

Tests less than or equal to (for self and other) and is used by the <= operator. Read more
1.0.0 · source§

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

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

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> StructuralPartialEq for ParseError<L, T, E>

Auto Trait Implementations§

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

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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 L: Send, E: Send, T: Send,

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

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

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

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unsafe fn clone_to_uninit(&self, dst: *mut T)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dst. 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.