Struct FormatSpec

pub struct FormatSpec<'a> {
    pub fill: Option<char>,
    pub align: Alignment,
    pub flags: u32,
    pub precision: Count<'a>,
    pub precision_span: Option<InnerSpan>,
    pub width: Count<'a>,
    pub width_span: Option<InnerSpan>,
    pub ty: &'a str,
    pub ty_span: Option<InnerSpan>,
}

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

Fields

fill: Option<char>

Optionally specified character to fill alignment with.

align: Alignment

Optionally specified alignment.

flags: u32

Packed version of various flags provided.

precision: Count<'a>

The integer precision to use.

precision_span: Option<InnerSpan>

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

width: Count<'a>

The string width requested for the resulting format.

width_span: Option<InnerSpan>

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

ty: &'a 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<InnerSpan>

The span of the descriptor string (for diagnostics).

Implementations

impl<'a> FormatSpec<'a>

pub fn new(ty: &'a str) -> Self

pub fn is_empty(&self) -> bool

Trait Implementations

impl<'a> Clone for FormatSpec<'a>

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

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<'a> Debug for FormatSpec<'a>

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

Formats the value using the given formatter.

impl<'a> Default for FormatSpec<'a>

fn default() -> Self

Returns the “default value” for a type.

impl<'a> Display for FormatSpec<'a>

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

Formats the value using the given formatter.

impl<'a> PartialEq for FormatSpec<'a>

fn eq(&self, other: &FormatSpec<'a>) -> 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<'a> Copy for FormatSpec<'a>

impl<'a> Eq for FormatSpec<'a>

impl<'a> StructuralPartialEq for FormatSpec<'a>