Enum Error

pub enum Error<'a> {
    BadFormat(char),
    Parse(Cow<'a, str>),
    ListRequired,
    MapRequired,
    MissingArg(Position<'a>),
    BadArg(Position<'a>, FormatType),
    BadData(Position<'a>, String),
    Io(Error),
}

An error returned during formatting.

An error may borrow information from the format string.

Variants

BadFormat(char)

An unknown format character has been specified in the format.

Parse(Cow<'a, str>)

A custom error during parsing a specific format.

ListRequired

The format refers to an indexed argument, but the argument list does not support indexed access.

MapRequired

The format refers to a named argument, but the argument list does not support named access.

MissingArg(Position<'a>)

An argument was missing from the argument list.

BadArg(Position<'a>, FormatType)

An argument could not be formatted in the requested format.

BadData(Position<'a>, String)

Formatting the data with the requested format resulted in an error.

Io(Error)

An I/O error occurred when writing into the target.

Trait Implementations

impl<'a> Debug for Error<'a>

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

Formats the value using the given formatter.

impl<'a> Display for Error<'a>

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

Formats the value using the given formatter.

impl<'a> Error for Error<'a>

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.