Struct rustc_builtin_macros::format::ast::FormatArguments

pub struct FormatArguments {
    arguments: Vec<FormatArgument>,
    num_unnamed_args: usize,
    num_explicit_args: usize,
    names: FxHashMap<Symbol, usize>,
}

The arguments to format_args!().

E.g. 1, 2, name="ferris", n=3, but also implicit captured arguments like x in format_args!("{x}").

Fields

arguments: Vec<FormatArgument>

num_unnamed_args: usize

num_explicit_args: usize

names: FxHashMap<Symbol, usize>

Implementations

impl FormatArguments

pub fn new() -> Self

pub fn add(&mut self, arg: FormatArgument) -> usize

pub fn by_name(&self, name: Symbol) -> Option<(usize, &FormatArgument)>

pub fn by_index(&self, i: usize) -> Option<&FormatArgument>

pub fn unnamed_args(&self) -> &[FormatArgument]

pub fn named_args(&self) -> &[FormatArgument]

pub fn explicit_args(&self) -> &[FormatArgument]

pub fn into_vec(self) -> Vec<FormatArgument>

Trait Implementations

impl Clone for FormatArguments

fn clone(&self) -> FormatArguments

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for FormatArguments

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

Formats the value using the given formatter.

Layout

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference’s “Type Layout” chapter for details on type layout guarantees.

Size: 72 bytes