Enum Error

pub enum Error<P, E = u32> {
    Code(ErrorKind<E>),
    Node(ErrorKind<E>, Box<Err<P, E>>),
    Position(ErrorKind<E>, P),
    NodePosition(ErrorKind<E>, P, Box<Err<P, E>>),
}

Contains the error that a parser can return

It can represent a linked list of errors, indicating the path taken in the parsing tree, with corresponding position in the input data. It depends on P, the input position (for a &u8 parser, it would be a &u8), and E, the custom error type (by default, u32)

Variants

Code(ErrorKind<E>)

An error code, represented by an ErrorKind, which can contain a custom error code represented by E

Node(ErrorKind<E>, Box<Err<P, E>>)

An error code, and the next error

Position(ErrorKind<E>, P)

An error code, and the input position

NodePosition(ErrorKind<E>, P, Box<Err<P, E>>)

An error code, the input position and the next error

Trait Implementations

impl<P, E> Clone for Err<P, E>

where P: Clone, E: Clone,

fn clone(&self) -> Err<P, E>

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<P, E> Debug for Err<P, E>

where P: Debug, E: Debug,

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.

impl<P, E> Display for Err<P, E>

where P: Debug, E: Debug,

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.

impl<P, E> Error for Err<P, E>

where P: Debug + Any, E: Debug + Any,

fn description(&self) -> &str

👎Deprecated since 1.42.0: use the Display impl or to_string()

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

Returns the lower-level source of this error, if any.

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0: replaced by Error::source, which can support downcasting

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.

impl<P, E> PartialEq for Err<P, E>

where P: PartialEq, E: PartialEq,

fn eq(&self, other: &Err<P, E>) -> bool

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<P, E> Eq for Err<P, E>

where P: Eq, E: Eq,

impl<P, E> StructuralPartialEq for Err<P, E>