Enum ErrorRef 

pub enum ErrorRef<'a> {
    Std(&'a (dyn Error + 'static), Option<&'a Meta>),
    Stack(&'a dyn StackError),
}

Reference to an error which can either be a std error or a stack error.

This provides a unified interface to either a std or a stack error. If it’s a stack error it allows to access the error metadata captured at the call site.

Variants

Std(&'a (dyn Error + 'static), Option<&'a Meta>)

Std error (no location info).

Stack(&'a dyn StackError)

StackError (has location info).

Implementations

impl<'a> ErrorRef<'a>

pub fn std(err: &'a (dyn Error + 'static)) -> ErrorRef<'a>

Creates a ErrorRef for a std error.

pub fn stack(err: &dyn StackError) -> ErrorRef<'_>

Creates a ErrorRef for a StackError.

pub fn is_transparent(&self) -> bool

Returns true if this error is transparent (i.e. directly forwards to its source).

pub fn as_std(self) -> &'a dyn Error

Returns the error as a std error.

pub fn source(self) -> Option<ErrorRef<'a>>

Returns the next source in the source chain as a ErrorRef.

pub fn meta(&self) -> Option<&Meta>

Returns the location where this error was created, if available.

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

Formats the error message.

pub fn downcast_ref<T: Error + 'static>(self) -> Option<&'a T>

Downcast this error object by reference.

Trait Implementations

impl<'a> Clone for ErrorRef<'a>

fn clone(&self) -> ErrorRef<'a>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<'a> Debug for ErrorRef<'a>

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

Formats the value using the given formatter.

impl<'a> Display for ErrorRef<'a>

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

Formats the value using the given formatter.

impl<'a> Copy for ErrorRef<'a>