Enum SessionError 

pub enum SessionError {
    Io(Error),
    OldLayout,
    Format {
        log: String,
        found: Option<String>,
    },
    Record {
        log: String,
        line: usize,
        why: String,
    },
    Changed {
        log: String,
    },
}

Why a session cannot be read or saved. Reading is strict: a session with any record it cannot read is refused whole, and nothing is written.

Variants

Io(Error)

The store failed.

OldLayout

The directory holds the single-file layout older than rig-session/2 (a top-level *.jsonl); it is left as it is.

Format

A log’s header names a format other than FORMAT, or none; it is left as it is.

Fields

log: String

The log.

found: Option<String>

The format its header names.

Record

A record cannot be read, or its change does not apply.

Fields

log: String

The log.

line: usize

The line, from 1.

why: String

Why.

Changed

The log moved on since the conversation saved to it was read: saving would lose the changes made there.

Fields

log: String

The log.

Trait Implementations

impl Debug for SessionError

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

Formats the value using the given formatter.

impl Display for SessionError

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

Formats the value using the given formatter.

impl Error for SessionError

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 From<Error> for SessionError

fn from(source: Error) -> Self

Converts to this type from the input type.

impl From<SessionError> for UndoError

fn from(source: SessionError) -> Self

Converts to this type from the input type.

impl From<SessionError> for Error

fn from(error: SessionError) -> Self

The store’s own error back; any other as io::ErrorKind::InvalidData, so ? works in code that returns io::Result.