Trait StreamError

Source

pub trait StreamError<Item, Range>: Sized {
Show 19 methods    // Required methods
    fn unexpected_token(token: Item) -> Self;
    fn unexpected_range(token: Range) -> Self;
    fn unexpected_format<T>(msg: T) -> Self
       where T: Display;
    fn expected_token(token: Item) -> Self;
    fn expected_range(token: Range) -> Self;
    fn expected_format<T>(msg: T) -> Self
       where T: Display;
    fn message_token(token: Item) -> Self;
    fn message_range(token: Range) -> Self;
    fn message_format<T>(msg: T) -> Self
       where T: Display;
    fn is_unexpected_end_of_input(&self) -> bool;
    fn into_other<T>(self) -> T
       where T: StreamError<Item, Range>;

    // Provided methods
    fn unexpected<E>(info: E) -> Self
       where E: for<'s> ErrorInfo<'s, Item, Range> { ... }
    fn unexpected_static_message(msg: &'static str) -> Self { ... }
    fn expected<E>(info: E) -> Self
       where E: for<'s> ErrorInfo<'s, Item, Range> { ... }
    fn expected_static_message(msg: &'static str) -> Self { ... }
    fn message_static_message(msg: &'static str) -> Self { ... }
    fn message<E>(info: E) -> Self
       where E: for<'s> ErrorInfo<'s, Item, Range> { ... }
    fn other<E>(err: E) -> Self
       where E: StdError + Send + Sync + 'static { ... }
    fn end_of_input() -> Self { ... }
}

Expand description

StreamError represents a single error returned from a Stream or a Parser.

Usually multiple instances of StreamError is composed into a ParseError to build the final error value.

Required Methods§

Source

fn into_other<T>(self) -> T
where T: StreamError<Item, Range>,

Converts self into a different StreamError type.

This should aim to preserve as much information as possible into the returned T value but if Self ignores some information passed to it using one of the constructors that information is naturally lost.