Struct LitInt

pub struct LitInt { /* private fields */ }

An integer literal: 1 or 1u16.

Implementations

impl LitInt

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

pub fn base10_digits(&self) -> &str

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.

use syn::LitInt;
use syn::parse::{Parse, ParseStream, Result};

struct Port {
    value: u16,
}

impl Parse for Port {
    fn parse(input: ParseStream) -> Result<Self> {
        let lit: LitInt = input.parse()?;
        let value = lit.base10_parse::<u16>()?;
        Ok(Port { value })
    }
}

pub fn suffix(&self) -> &str

pub fn span(&self) -> Span

pub fn set_span(&mut self, span: Span)

pub fn token(&self) -> Literal

Trait Implementations

impl Clone for LitInt

Available on crate feature clone-impls only.

fn clone(&self) -> Self

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for LitInt

Available on crate feature extra-traits only.

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

Formats the value using the given formatter.

impl Display for LitInt

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

Formats the value using the given formatter.

impl From<LitInt> for Lit

fn from(e: LitInt) -> Lit

Converts to this type from the input type.

impl From<Literal> for LitInt

fn from(token: Literal) -> Self

Converts to this type from the input type.

impl Hash for LitInt

Available on crate feature extra-traits only.

fn hash<H>(&self, state: &mut H)

where H: Hasher,

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Parse for LitInt

Available on crate feature parsing only.

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

impl PartialEq for LitInt

Available on crate feature extra-traits only.

fn eq(&self, other: &Self) -> 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 ToTokens for LitInt

Available on crate feature printing only.

fn to_tokens(&self, tokens: &mut TokenStream)

Write self to the given TokenStream.

fn to_token_stream(&self) -> TokenStream

Convert self directly into a TokenStream object.

fn into_token_stream(self) -> TokenStream

where Self: Sized,

Convert self directly into a TokenStream object.

impl Eq for LitInt

Available on crate feature extra-traits only.

impl Token for LitInt

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: 8 bytes