Struct DesignatorWriter

struct DesignatorWriter<'p, 'w, W> {
    printer: &'p SpanPrinter,
    wtr: &'w mut W,
    desig: Designators,
    sign: Option<DirectionSign>,
    fmtint: DecimalFormatter,
    fmtfraction: FractionalFormatter,
    written_non_zero_unit: bool,
}

An abstraction for writing the “designator” variant of the friendly format.

This takes care of computing some initial state and keeping track of some mutable state that influences printing. For example, whether to write a delimiter or not (one should only come after a unit that has been written).

Fields

printer: &'p SpanPrinter

wtr: &'w mut W

desig: Designators

sign: Option<DirectionSign>

fmtint: DecimalFormatter

fmtfraction: FractionalFormatter

written_non_zero_unit: bool

Implementations

impl<'p, 'w, W: Write> DesignatorWriter<'p, 'w, W>

fn new( printer: &'p SpanPrinter, wtr: &'w mut W, has_calendar: bool, signum: i8, ) -> DesignatorWriter<'p, 'w, W>

fn maybe_write_prefix_sign(&mut self) -> Result<(), Error>

fn maybe_write_suffix_sign(&mut self) -> Result<(), Error>

fn maybe_write_zero(&mut self) -> Result<(), Error>

fn write(&mut self, unit: Unit, value: impl Into<i64>) -> Result<(), Error>

fn write_fractional_duration( &mut self, unit: FractionalUnit, duration: &SignedDuration, ) -> Result<(), Error>

fn finish_preceding(&mut self) -> Result<(), Error>

Trait Implementations

impl<'p, 'w, W: Debug> Debug for DesignatorWriter<'p, 'w, W>

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

Formats the value using the given formatter.