Struct FormatSpec

pub struct FormatSpec<'input> {

    pub fill: Option<char>,
    pub fill_span: Option<Range<usize>>,
    pub align: Alignment,
    pub sign: Option<Sign>,
    pub alternate: bool,
    pub zero_pad: bool,
    pub debug_hex: Option<DebugHex>,
    pub precision: Count<'input>,
    pub precision_span: Option<Range<usize>>,
    pub width: Count<'input>,
    pub width_span: Option<Range<usize>>,
    pub ty: &'input str,
    pub ty_span: Option<Range<usize>>,
}

Specification for the formatting of an argument in the format string.

Fields

fill: Option<char>

Optionally specified character to fill alignment with.

fill_span: Option<Range<usize>>

Span of the optionally specified fill character.

align: Alignment

Optionally specified alignment.

sign: Option<Sign>

The + or - flag.

alternate: bool

The # flag.

zero_pad: bool

The 0 flag.

debug_hex: Option<DebugHex>

The x or X flag. (Only for Debug.)

precision: Count<'input>

The integer precision to use.

precision_span: Option<Range<usize>>

The span of the precision formatting flag (for diagnostics).

width: Count<'input>

The string width requested for the resulting format.

width_span: Option<Range<usize>>

The span of the width formatting flag (for diagnostics).

ty: &'input str

The descriptor string representing the name of the format desired for this argument, this can be empty or any number of characters, although it is required to be one word.

ty_span: Option<Range<usize>>

The span of the descriptor string (for diagnostics).

Trait Implementations

impl<'input> Clone for FormatSpec<'input>

fn clone(&self) -> FormatSpec<'input>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<'input> Debug for FormatSpec<'input>

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

Formats the value using the given formatter.

impl<'input> Default for FormatSpec<'input>

fn default() -> FormatSpec<'input>

Returns the “default value” for a type.

impl<'input> PartialEq for FormatSpec<'input>

fn eq(&self, other: &FormatSpec<'input>) -> bool

Tests for self and other values to be equal, and is used by ==.

const 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<'input> StructuralPartialEq for FormatSpec<'input>