Struct ErrorMessage 

pub struct ErrorMessage(/* private fields */);

A lightweight owned error message.

Implementations

impl ErrorMessage

pub const fn empty() -> Self

Creates an empty error message.

pub const fn from_bstr(msg: ByteString) -> Self

Creates an error message from a ByteString.

pub const fn from_static(msg: &'static str) -> Self

Creates an error message from a static string.

pub fn is_empty(&self) -> bool

Returns true if the message is empty.

pub fn as_str(&self) -> &str

Returns the message as a string slice.

pub fn as_bstr(&self) -> &ByteString

Returns the underlying ByteString.

pub fn into_string(self) -> ByteString

Converts this message into its underlying ByteString.

pub fn with_source<E: StdError + Send + Sync + 'static>( self, source: E, ) -> ErrorMessageChained

Attaches a source error to this message.

Trait Implementations

impl Clone for ErrorMessage

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ErrorMessage

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

Formats the value using the given formatter.

impl Display for ErrorMessage

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

Formats the value using the given formatter.

impl Eq for ErrorMessage

impl Error for ErrorMessage

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<'a> From<&'a ErrorMessage> for ByteString

fn from(msg: &'a ErrorMessage) -> Self

Converts to this type from the input type.

impl From<&'static str> for ErrorMessage

fn from(value: &'static str) -> Self

Converts to this type from the input type.

impl From<ByteString> for ErrorMessage

fn from(value: ByteString) -> Self

Converts to this type from the input type.

impl From<ErrorMessage> for ByteString

fn from(msg: ErrorMessage) -> Self

Converts to this type from the input type.

impl From<String> for ErrorMessage

fn from(value: String) -> Self

Converts to this type from the input type.

impl PartialEq for ErrorMessage

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for ErrorMessage