Enum ParseError

#[non_exhaustive]
pub enum ParseError {
    Syntax(ParseError),
    Range(RangeError),
    Date(DateError),
    MissingFields,
    InconsistentTimeUtcOffsets,
    InvalidOffsetError,
    ExcessivePrecision,
    MismatchedTimeZoneFields,
    UnknownCalendar,
    MismatchedCalendar(AnyCalendarKind, AnyCalendarKind),
    RequiresCalculation,
}

The error type for parsing RFC 9557 strings.

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.

Syntax(ParseError)

Syntax error.

Range(RangeError)

Parsed record is out of valid date range.

Date(DateError)

Parsed date and time records were not a valid ISO date.

MissingFields

There were missing fields required to parse component.

InconsistentTimeUtcOffsets

There were two offsets provided that were not consistent with each other.

InvalidOffsetError

There was an invalid Offset.

ExcessivePrecision

Parsed fractional digits had excessive precision beyond nanosecond.

MismatchedTimeZoneFields

The set of time zone fields was not expected for the given type. For example, if a named time zone was present with offset-only parsing, or an offset was present with named-time-zone-only parsing.

UnknownCalendar

An unknown calendar was provided.

MismatchedCalendar(AnyCalendarKind, AnyCalendarKind)

Expected a different calendar.

RequiresCalculation

A timezone calculation is required to interpret this string, which is not supported.

Example

use icu::calendar::Iso;
use icu::time::{ZonedDateTime, ParseError, zone::IanaParser};

// This timestamp is in UTC, and requires a time zone calculation in order to display a Zurich time.
assert_eq!(
    ZonedDateTime::try_lenient_from_str("2024-08-12T12:32:00Z[Europe/Zurich]", Iso, IanaParser::new()).unwrap_err(),
    ParseError::RequiresCalculation,
);

// These timestamps are in local time
ZonedDateTime::try_lenient_from_str("2024-08-12T14:32:00+02:00[Europe/Zurich]", Iso, IanaParser::new()).unwrap();
ZonedDateTime::try_lenient_from_str("2024-08-12T14:32:00[Europe/Zurich]", Iso, IanaParser::new()).unwrap();

Trait Implementations

impl Debug for ParseError

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

Formats the value using the given formatter.

impl Display for ParseError

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

Formats the value using the given formatter.

impl Error for ParseError

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<DateError> for ParseError

fn from(value: DateError) -> Self

Converts to this type from the input type.

impl From<InvalidOffsetError> for ParseError

fn from(_: InvalidOffsetError) -> Self

Converts to this type from the input type.

impl From<ParseError> for ParseError

fn from(value: Rfc9557ParseError) -> Self

Converts to this type from the input type.

impl From<ParseError> for ParseError

fn from(value: ParseError) -> Self

Converts to this type from the input type.

impl From<RangeError> for ParseError

fn from(value: RangeError) -> Self

Converts to this type from the input type.

impl PartialEq for ParseError

fn eq(&self, other: &ParseError) -> 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 StructuralPartialEq for ParseError