Struct winnow::error::ContextError

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pub struct ContextError<C = StrContext> { /* private fields */ }
Expand description

Accumulate context while backtracking errors

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impl<C> ContextError<C>

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pub fn new() -> Self

Create an empty error

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pub fn context(&self) -> impl Iterator<Item = &C>

Access context from Parser::context

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pub fn cause(&self) -> Option<&(dyn Error + Send + Sync + 'static)>

Originating std::error::Error

Trait Implementations§

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impl<C, I: Stream> AddContext<I, C> for ContextError<C>

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fn add_context( self, _input: &I, _token_start: &<I as Stream>::Checkpoint, context: C ) -> Self

Append to an existing error custom data Read more
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impl<C: Clone> Clone for ContextError<C>

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fn clone(&self) -> Self

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl<C: Debug> Debug for ContextError<C>

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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<C> Default for ContextError<C>

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fn default() -> Self

Returns the “default value” for a type. Read more
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impl Display for ContextError<StrContext>

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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<C> ErrorConvert<ContextError<C>> for ContextError<C>

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fn convert(self) -> ContextError<C>

Transform to another error type
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impl<C, I, E: Error + Send + Sync + 'static> FromExternalError<I, E> for ContextError<C>

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fn from_external_error(_input: &I, _kind: ErrorKind, e: E) -> Self

Like ParserError::from_error_kind but also include an external error.
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impl<I: Stream, C> ParserError<I> for ContextError<C>

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fn from_error_kind(_input: &I, _kind: ErrorKind) -> Self

Creates an error from the input position and an ErrorKind
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fn append( self, _input: &I, _token_start: &<I as Stream>::Checkpoint, _kind: ErrorKind ) -> Self

Like ParserError::from_error_kind but merges it with the existing error. Read more
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fn or(self, other: Self) -> Self

Combines errors from two different parse branches. Read more
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fn assert(input: &I, _message: &'static str) -> Self
where I: Debug,

Process a parser assertion
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impl<C: PartialEq> PartialEq for ContextError<C>

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fn eq(&self, other: &Self) -> 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.

Auto Trait Implementations§

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impl<C = StrContext> !RefUnwindSafe for ContextError<C>

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impl<C> Send for ContextError<C>
where C: Send,

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impl<C> Sync for ContextError<C>
where C: Sync,

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impl<C> Unpin for ContextError<C>
where C: Unpin,

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impl<C = StrContext> !UnwindSafe for ContextError<C>

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<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.