Enum pest::error::ErrorVariant

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pub enum ErrorVariant<R> {
    ParsingError {
        positives: Vec<R>,
        negatives: Vec<R>,
    },
    CustomError {
        message: String,
    },
}
Expand description

Different kinds of parsing errors.

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ParsingError

Generated parsing error with expected and unexpected Rules

Fields

§positives: Vec<R>

Positive attempts

§negatives: Vec<R>

Negative attempts

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CustomError

Custom error with a message

Fields

§message: String

Short explanation

Implementations§

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impl<R: RuleType> ErrorVariant<R>

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pub fn message(&self) -> Cow<'_, str>

Returns the error message for ErrorVariant

If ErrorVariant is CustomError, it returns a Cow::Borrowed reference to message. If ErrorVariant is ParsingError, a Cow::Owned containing “expected ErrorVariant::ParsingError::positives ErrorVariant::ParsingError::negatives” is returned.

§Examples
let variant = ErrorVariant::<()>::CustomError {
    message: String::from("unexpected error")
};

println!("{}", variant.message());

Trait Implementations§

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impl<R: Clone> Clone for ErrorVariant<R>

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fn clone(&self) -> ErrorVariant<R>

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<R: Debug> Debug for ErrorVariant<R>

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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<R: RuleType> Display for ErrorVariant<R>

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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<R> Error for ErrorVariant<R>
where Self: Debug + Display,

1.30.0 · source§

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

Returns the lower-level source of this error, if any. Read more
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fn description(&self) -> &str

👎Deprecated since 1.42.0: use the Display impl or to_string()
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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<R: Hash> Hash for ErrorVariant<R>

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fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher. Read more
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fn hash_slice<H>(data: &[Self], state: &mut H)
where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher. Read more
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impl<R: PartialEq> PartialEq for ErrorVariant<R>

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fn eq(&self, other: &ErrorVariant<R>) -> bool

Tests for self and other values to be equal, and is used by ==.
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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<R: Eq> Eq for ErrorVariant<R>

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impl<R> StructuralPartialEq for ErrorVariant<R>

Auto Trait Implementations§

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impl<R> Freeze for ErrorVariant<R>

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impl<R> RefUnwindSafe for ErrorVariant<R>
where R: RefUnwindSafe,

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impl<R> Send for ErrorVariant<R>
where R: Send,

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impl<R> Sync for ErrorVariant<R>
where R: Sync,

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impl<R> Unpin for ErrorVariant<R>
where R: Unpin,

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impl<R> UnwindSafe for ErrorVariant<R>
where R: 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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default 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<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.