Struct syn::LitInt

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pub struct LitInt { /* private fields */ }
Expand description

An integer literal: 1 or 1u16.

Implementations§

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impl LitInt

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

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pub fn base10_digits(&self) -> &str

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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 })
    }
}
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pub fn suffix(&self) -> &str

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pub fn span(&self) -> Span

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

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pub fn token(&self) -> Literal

Trait Implementations§

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impl Clone for LitInt

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fn clone(&self) -> Self

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Display for LitInt

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

Formats the value using the given formatter. Read more
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impl From<LitInt> for Lit

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fn from(e: LitInt) -> Lit

Converts to this type from the input type.
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impl From<Literal> for LitInt

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fn from(token: Literal) -> Self

Converts to this type from the input type.
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impl Parse for LitInt

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

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impl ToTokens for LitInt

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

Write self to the given TokenStream. Read more
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fn to_token_stream(&self) -> TokenStream

Convert self directly into a TokenStream object. Read more
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fn into_token_stream(self) -> TokenStream
where Self: Sized,

Convert self directly into a TokenStream object. Read more
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impl Token for LitInt

Auto Trait Implementations§

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impl Freeze for LitInt

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impl RefUnwindSafe for LitInt

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impl !Send for LitInt

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impl !Sync for LitInt

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impl Unpin for LitInt

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impl UnwindSafe for LitInt

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> Spanned for T
where T: Spanned + ?Sized,

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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.
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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T> ToString for T
where T: Display + ?Sized,

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default fn to_string(&self) -> String

Converts the given value to a String. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.