Struct ErrCtx 

pub struct ErrCtx<E: Error> {
    pub source: E,
    /* private fields */
}

Custom error struct ErrCtx.

Stores two fields, a msg: Vec<u8> field which stores the context messages as raw bytes for less memory usage, and source: E where E: std::error::Error for the lower-level source of the error.

The Vec<u8> for messages will be optimized even further in nexy versions to use smallvec or a similar crate for zero-alloc small contexts while longer ones stay alloc.

Fields

source: E

Implementations

impl<E: Error + Send + Sync + 'static> ErrCtx<E>

pub fn new(source: E, msg: Vec<u8>) -> Self

Function for constructing a new ErrCtx<E> struct from a raw source error and a Vec<u8> of bytes that gets consumed in the function.

pub fn msg(&self) -> &str

Method for getting the messages in a ErrCtx<E> struct in &str format instead of raw accessing the Vec<u8>.

Trait Implementations

impl<E: Debug + Error> Debug for ErrCtx<E>

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

Formats the value using the given formatter.

impl<E: Display + Error> Display for ErrCtx<E>

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

Formats the value using the given formatter.

impl<E: Display + Error + 'static> Error for ErrCtx<E>

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

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

fn description(&self) -> &str

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

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<E: Error> From<E> for ErrCtx<E>

fn from(value: E) -> Self

Converts to this type from the input type.

impl<E: Error> Send for ErrCtx<E>

impl<E: Error> Sync for ErrCtx<E>