Trait flex_error::ErrorMessageTracer

pub trait ErrorMessageTracer {
    fn new_message<E: Display>(message: &E) -> Self;
    fn add_message<E: Display>(self, message: &E) -> Self;
    fn as_error(&self) -> Option<&(dyn Error + 'static)>;
}

An ErrorMessageTracer can be used to generically trace any error detail that implements Display.

The error tracer may add backtrace information when the tracing methods are called. However since the error detail is required to only implement Display, any existing error trace may be lost even if the error detail implements Error and contains backtrace, unless the backtrace is serialized in Display.

Required methods

fn new_message<E: Display>(message: &E) -> Self

Creates a new error trace, starting from a source error detail that implements Display.

fn add_message<E: Display>(self, message: &E) -> Self

Adds new error detail to an existing trace.

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

If the std feature is enabled, the error tracer also provides method to optionally converts itself to a dyn Error.

Implementors

impl ErrorMessageTracer for StringTracer

fn new_message<E: Display>(err: &E) -> Self

fn add_message<E: Display>(self, err: &E) -> Self

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

impl ErrorMessageTracer for AnyhowTracer

fn new_message<E: Display>(err: &E) -> Self

fn add_message<E: Display>(self, err: &E) -> Self

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

impl ErrorMessageTracer for EyreTracer

fn new_message<E: Display>(err: &E) -> Self

fn add_message<E: Display>(self, err: &E) -> Self

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