Struct FormatDescriptionV3 

pub struct FormatDescriptionV3<'a> {
    pub(crate) inner: FormatDescriptionV3Inner<'a>,
    pub(crate) max_bytes_needed: usize,
}

Available on crate features formatting or parsing only.

A complete description of how to format and parse a type.

Both for forwards compatibility and to enable optimizations, this type is deliberately opaque and cannot be constructed by users of the crate. Instead, it is returned by the format_description! macro (when version=3 is used) as well as the parse_borrowed and parse_owned methods.

Fields

inner: FormatDescriptionV3Inner<'a>

The inner enum that controls all business logic.

max_bytes_needed: usize

Available on crate feature formatting only.

The maximum number of bytes that are needed to format any value using this format description.

Implementations

impl FormatDescriptionV3<'_>

pub fn to_owned(self) -> FormatDescriptionV3<'static>

Available on crate feature alloc only.

Convert the format description to an owned version, enabling it to be stored without regard for lifetime.

Trait Implementations

impl<'a> Clone for FormatDescriptionV3<'a>

fn clone(&self) -> FormatDescriptionV3<'a>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl ComputeMetadata for FormatDescriptionV3<'_>

Available on crate feature formatting only.

fn compute_metadata(&self) -> Metadata

Compute the metadata for a format description.

impl Debug for FormatDescriptionV3<'_>

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

Formats the value using the given formatter.

impl Sealed for FormatDescriptionV3<'_>

Available on crate feature formatting only.

fn format_into<V>( &self, output: &mut (impl Write + ?Sized), value: &V, state: &mut V::State, ) -> Result<usize, Format>

where V: ComponentProvider,

Format the item into the provided output, returning the number of bytes written.

fn format<V>(&self, value: &V, state: &mut V::State) -> Result<String, Format>

where V: ComponentProvider,

Format the item directly to a String.

impl Sealed for FormatDescriptionV3<'_>

Available on crate feature parsing only.

fn parse_into<'a>( &self, input: &'a [u8], parsed: &mut Parsed, ) -> Result<&'a [u8], Parse>

Parse the item into the provided Parsed struct.

fn parse(&self, input: &[u8]) -> Result<Parsed, Parse>

Parse the item into a new Parsed struct.

fn parse_date(&self, input: &[u8]) -> Result<Date, Parse>

Parse a Date from the format description.

fn parse_time(&self, input: &[u8]) -> Result<Time, Parse>

Parse a Time from the format description.

fn parse_offset(&self, input: &[u8]) -> Result<UtcOffset, Parse>

Parse a UtcOffset from the format description.

fn parse_primitive_date_time( &self, input: &[u8], ) -> Result<PrimitiveDateTime, Parse>

Parse a PrimitiveDateTime from the format description.

fn parse_utc_date_time(&self, input: &[u8]) -> Result<UtcDateTime, Parse>

Parse a UtcDateTime from the format description.

fn parse_offset_date_time(&self, input: &[u8]) -> Result<OffsetDateTime, Parse>

Parse a OffsetDateTime from the format description.

impl Formattable for FormatDescriptionV3<'_>

Available on crate feature formatting only.

impl Parsable for FormatDescriptionV3<'_>

Available on crate feature parsing only.