Enum ParseReleaseDateError 

#[non_exhaustive]
pub enum ParseReleaseDateError {
    WrongLength {
        found: usize,
    },
    NotASeparator {
        index: usize,
        found: u8,
    },
    NotADigit {
        index: usize,
        found: u8,
    },
    MonthOutOfRange {
        month: u16,
    },
    DayOutOfRange {
        year: u16,
        month: u8,
        day: u16,
        last: u8,
    },
    BeforeFirstRevision {
        date: ReleaseDate,
    },
}

Why a string is not a YYYY-MM-DD release date.

Every variant names a byte offset rather than a character offset: the parser reads bytes and never slices the &str, so a multi-byte character at an unexpected position is reported by its lead byte. The distinction matters only for the message, and the alternative — a char from chars().nth — would report a different character from the one that actually failed.

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.

WrongLength

The string was not exactly ten bytes long.

Fields

found: usize

The length that was supplied.

NotASeparator

A separator was expected and something else was there.

Fields

index: usize

Byte offset of the offending byte.

found: u8

The byte that was there.

NotADigit

A digit was expected and something else was there.

Fields

index: usize

Byte offset of the offending byte.

found: u8

The byte that was there.

MonthOutOfRange

The month was outside 1..=12.

Fields

month: u16

The month that was supplied, before conversion to u8.

DayOutOfRange

The day was outside 1..= the length of that month.

Fields

year: u16

The year the day was supplied for.

month: u8

The month the day was supplied for.

day: u16

The day that was supplied, before conversion to u8.

last: u8

The length of that month, honouring leap years.

BeforeFirstRevision

The date is well formed but predates the protocol.

A separate variant from the shape errors above because the fix is different: a WrongLength means the peer sent something that is not a version, and this means the peer sent a version from before MCP existed.

Fields

date: ReleaseDate

The date that was supplied.

Trait Implementations

impl Clone for ParseReleaseDateError

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for ParseReleaseDateError

impl Debug for ParseReleaseDateError

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

Formats the value using the given formatter.

impl Display for ParseReleaseDateError

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

Formats the value using the given formatter.

impl Eq for ParseReleaseDateError

impl Error for ParseReleaseDateError

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<ParseReleaseDateError> for ParseProtocolVersionError

fn from(source: ParseReleaseDateError) -> Self

Converts to this type from the input type.

impl PartialEq for ParseReleaseDateError

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for ParseReleaseDateError