Struct regex_automata::util::wire::SerializeError

pub struct SerializeError {
    what: &'static str,
}

An error that occurs when serializing an object from this crate.

Serialization, as used in this crate, universally refers to the process of transforming a structure (like a DFA) into a custom binary format represented by &[u8]. To this end, serialization is generally infallible. However, it can fail when caller provided buffer sizes are too small. When that occurs, a serialization error is reported.

A SerializeError provides no introspection capabilities. Its only supported operation is conversion to a human readable error message.

This error type implements the std::error::Error trait only when the std feature is enabled. Otherwise, this type is defined in all configurations.

Fields

what: &'static str

The name of the thing that a buffer is too small for.

Currently, the only kind of serialization error is one that is committed by a caller: providing a destination buffer that is too small to fit the serialized object. This makes sense conceptually, since every valid inhabitant of a type should be serializable.

This is somewhat exposed in the public API of this crate. For example, the to_bytes_{big,little}_endian APIs return a Vec<u8> and are guaranteed to never panic or error. This is only possible because the implementation guarantees that it will allocate a Vec<u8> that is big enough.

In summary, if a new serialization error kind needs to be added, then it will need careful consideration.

Implementations

impl SerializeError

pub(crate) fn buffer_too_small(what: &'static str) -> SerializeError

Trait Implementations

impl Debug for SerializeError

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

Formats the value using the given formatter.

impl Display for SerializeError

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

Formats the value using the given formatter.

impl Error for SerializeError

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

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.