Enum Error

#[non_exhaustive]
pub enum Error {
    UnsupportedType,
    KeyNotString,
    ValueAfterTable,
    DateInvalid,
    NumberInvalid,
    UnsupportedNone,
    Custom(String),
}

Errors that can occur when serializing a type.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

UnsupportedType

Indicates that a Rust type was requested to be serialized but it was not supported.

Currently the TOML format does not support serializing types such as enums, tuples and tuple structs.

KeyNotString

The key of all TOML maps must be strings, but serialization was attempted where the key of a map was not a string.

ValueAfterTable

All values in a TOML table must be emitted before further tables are emitted. If a value is emitted after a table then this error is generated.

DateInvalid

A serialized date was invalid.

NumberInvalid

A serialized number was invalid.

UnsupportedNone

None was attempted to be serialized, but it’s not supported.

Custom(String)

A custom error which could be generated when serializing a particular type.

Trait Implementations

impl Clone for Error

fn clone(&self) -> Error

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Error

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

Formats the value using the given formatter.

impl Display for Error

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

Formats the value using the given formatter.

impl Error for Error

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 Error for Error

fn custom<T: Display>(msg: T) -> Error

Used when a Serialize implementation encounters any error while serializing a type.

impl PartialEq for Error

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Eq for Error

impl StructuralPartialEq for Error