Struct DateTime 

pub struct DateTime(/* private fields */);

Helper for validated date/time string construction.

Wraps an RFC 3339 (an ISO 8601 profile) UTC string suitable for CBOR tag 0. The string is validated on creation: the date must be within 0001-01-01T00:00:00Z to 9999-12-31T23:59:59Z, and follow RFC 3339 section 5.6 layout.

Whole-second timestamps omit the fractional part. Sub-second timestamps include only the necessary digits (1-9, no trailing zeros).

CBOR::Core references section 5.6 of RFC3339, which allows leap seconds (second == 60). So we accept leap seconds and validate, if the date is one of the currently known 27 leap second dates.

However, trying to convert a date/time value containing a leap second to SystemTime will fail with Err(InvalidEncoding).

Implements TryFrom<SystemTime> and TryFrom<&str>, so that Value::date_time can accept both through a single TryInto<DateTime> bound.

Trait Implementations

impl Clone for DateTime

fn clone(&self) -> DateTime

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for DateTime

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

Formats the value using the given formatter.

impl From<DateTime> for Value

fn from(value: DateTime) -> Self

Converts to this type from the input type.

impl Hash for DateTime

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for DateTime

fn cmp(&self, other: &DateTime) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for DateTime

fn eq(&self, other: &DateTime) -> 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 PartialOrd for DateTime

fn partial_cmp(&self, other: &DateTime) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl<Tz: TimeZone> TryFrom<&DateTime<Tz>> for DateTime

where Tz::Offset: Display,

Available on crate feature chrono only.

type Error = Error

The type returned in the event of a conversion error.

fn try_from(value: &DateTime<Tz>) -> Result<Self>

Performs the conversion.

impl TryFrom<&OffsetDateTime> for DateTime

Available on crate feature time only.

type Error = Error

The type returned in the event of a conversion error.

fn try_from(dt: &OffsetDateTime) -> Result<Self>

Performs the conversion.

impl TryFrom<&String> for DateTime

type Error = Error

The type returned in the event of a conversion error.

fn try_from(value: &String) -> Result<Self>

Performs the conversion.

impl TryFrom<&UtcDateTime> for DateTime

Available on crate feature time only.

type Error = Error

The type returned in the event of a conversion error.

fn try_from(dt: &UtcDateTime) -> Result<Self>

Performs the conversion.

impl TryFrom<&str> for DateTime

type Error = Error

The type returned in the event of a conversion error.

fn try_from(value: &str) -> Result<Self>

Performs the conversion.

impl TryFrom<Box<str>> for DateTime

type Error = Error

The type returned in the event of a conversion error.

fn try_from(value: Box<str>) -> Result<Self>

Performs the conversion.

impl<Tz: TimeZone> TryFrom<DateTime<Tz>> for DateTime

where Tz::Offset: Display,

Available on crate feature chrono only.

fn try_from(value: DateTime<Tz>) -> Result<Self>

Converts a chrono::DateTime to a CBOR date/time string (tag 0).

Whole-second timestamps omit the fractional part and sub-second timestamps include only the necessary digits.

type Error = Error

The type returned in the event of a conversion error.

impl TryFrom<OffsetDateTime> for DateTime

Available on crate feature time only.

fn try_from(dt: OffsetDateTime) -> Result<Self>

Converts a time::OffsetDateTime to a CBOR date/time string (tag 0).

Whole-second timestamps omit the fractional part and sub-second timestamps include only the necessary digits.

type Error = Error

The type returned in the event of a conversion error.

impl TryFrom<String> for DateTime

type Error = Error

The type returned in the event of a conversion error.

fn try_from(value: String) -> Result<Self>

Performs the conversion.

impl TryFrom<SystemTime> for DateTime

type Error = Error

The type returned in the event of a conversion error.

fn try_from(value: SystemTime) -> Result<Self>

Performs the conversion.

impl TryFrom<UtcDateTime> for DateTime

Available on crate feature time only.

fn try_from(dt: UtcDateTime) -> Result<Self>

Converts a time::UtcDateTime to a CBOR date/time string (tag 0).

Whole-second timestamps omit the fractional part and sub-second timestamps include only the necessary digits.

type Error = Error

The type returned in the event of a conversion error.

impl Eq for DateTime

impl StructuralPartialEq for DateTime