Trait winnow::error::AddContext

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pub trait AddContext<I: Stream, C = &'static str>: Sized {
    // Provided method
    fn add_context(
        self,
        _input: &I,
        _token_start: &<I as Stream>::Checkpoint,
        _context: C,
    ) -> Self { ... }
}
Expand description

Used by Parser::context to add custom data to error while backtracking

May be implemented multiple times for different kinds of context.

Provided Methods§

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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

This is used mainly by Parser::context, to add user friendly information to errors when backtracking through a parse tree

Object Safety§

This trait is not object safe.

Implementations on Foreign Types§

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impl<I: Stream, C> AddContext<I, C> for ()

Implementors§

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

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impl<I, C> AddContext<I, C> for TreeError<I, C>
where I: Stream + Clone,

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impl<I: Stream + Clone, C> AddContext<I, C> for InputError<I>

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

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impl<I: Stream, C, E: AddContext<I, C>> AddContext<I, C> for ErrMode<E>