Enum LitNumber

pub enum LitNumber {
    Int(LitInt),
    Float(LitFloat),
}

An integer or fixed-point number literal: 1 or 1.0.

Variants

Int(LitInt)

Float(LitFloat)

Implementations

impl LitNumber

pub fn new_int(repr: &str, span: Span) -> Self

pub fn new_fixed(repr: &str, span: Span) -> Self

pub fn peek(lookahead: &Lookahead1<'_>) -> bool

pub fn base10_digits(&self) -> &str

Returns the base-10 digits of the literal.

pub fn base10_parse<N>(&self) -> Result<N>

where N: FromStr, N::Err: Display,

Parses the literal into a selected number type.

This is equivalent to lit.base10_digits().parse() except that the resulting errors will be correctly spanned to point to the literal token in the macro input.

pub fn suffix(&self) -> &str

pub fn token(&self) -> Literal

Trait Implementations

impl Clone for LitNumber

fn clone(&self) -> LitNumber

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for LitNumber

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

Formats the value using the given formatter.

impl Parse for LitNumber

fn parse(input: ParseStream<'_>) -> Result<Self>

impl Spanned for LitNumber

fn span(&self) -> Span

Returns a Span covering the complete contents of this syntax tree node, or Span::call_site() if this node is empty.

fn set_span(&mut self, span: Span)

Sets the span of this syntax tree node if it is not empty.

fn with_span(self, span: Span) -> Self

where Self: Sized,

Sets the span of this owned syntax tree node if it is not empty.

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: 16 bytes

Size for each variant:

• Int: 8 bytes
• Float: 8 bytes