Enum syn::Lit

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pub enum Lit {
    Str(LitStr),
    ByteStr(LitByteStr),
    Byte(LitByte),
    Char(LitChar),
    Int(LitInt),
    Float(LitFloat),
    Bool(LitBool),
    Verbatim(Literal),
}

Expand description

A Rust literal such as a string or integer or boolean.

Syntax tree enum

This type is a syntax tree enum.

Variants

`Str(LitStr)`

A UTF-8 string literal: "foo".

`ByteStr(LitByteStr)`

A byte string literal: b"foo".

`Byte(LitByte)`

A byte literal: b'f'.

`Char(LitChar)`

A character literal: 'a'.

`Int(LitInt)`

An integer literal: 1 or 1u16.

`Float(LitFloat)`

A floating point literal: 1f64 or 1.0e10f64.

Must be finite. May not be infinite or NaN.

`Bool(LitBool)`

A boolean literal: true or false.

`Verbatim(Literal)`

A raw token literal not interpreted by Syn.

Implementations

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impl Lit

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pub fn new(token: Literal) -> Self

Interpret a Syn literal from a proc-macro2 literal.

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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)

Trait Implementations

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impl Clone for Lit

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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 From<Lit> for NestedMeta

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fn from(e: Lit) -> NestedMeta

Performs the conversion.

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impl From<LitBool> for Lit

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fn from(e: LitBool) -> Lit

Performs the conversion.

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impl From<LitByte> for Lit

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fn from(e: LitByte) -> Lit

Performs the conversion.

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impl From<LitByteStr> for Lit

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fn from(e: LitByteStr) -> Lit

Performs the conversion.

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impl From<LitChar> for Lit

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fn from(e: LitChar) -> Lit

Performs the conversion.

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impl From<LitFloat> for Lit

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fn from(e: LitFloat) -> Lit

Performs the conversion.

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impl From<LitInt> for Lit

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fn from(e: LitInt) -> Lit

Performs the conversion.

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impl From<LitStr> for Lit

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fn from(e: LitStr) -> Lit

Performs the conversion.

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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

Convert self directly into a TokenStream object. Read more

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impl Token for Lit

Auto Trait Implementations

impl RefUnwindSafe for Lit

impl !Send for Lit

impl !Sync for Lit

impl Unpin for Lit

impl UnwindSafe for Lit

Blanket Implementations

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

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pub 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,

const: unstable · source

pub 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,

const: unstable · source

pub 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

const: unstable · source

pub fn from(t: T) -> T

Returns the argument unchanged.

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

const: unstable · source

pub 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. Read more

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

type Owned = T

The resulting type after obtaining ownership.

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pub fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more

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pub fn clone_into(&self, target: &mut T)

🔬 This is a nightly-only experimental API. (toowned_clone_into)

Uses borrowed data to replace owned data, usually by cloning. Read more

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

type Error = Infallible

The type returned in the event of a conversion error.

const: unstable · source

pub fn try_from(value: U) -> Result<T, <T as TryFrom>::Error>

Performs the conversion.

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impl<T, U> TryInto for T where
U: TryFrom<T>,

type Error = >::Error

The type returned in the event of a conversion error.

const: unstable · source

pub fn try_into(self) -> Result<U, >::Error>

Performs the conversion.

Enum syn::Lit

Variants

Str(LitStr)

ByteStr(LitByteStr)

Byte(LitByte)

Char(LitChar)

Int(LitInt)

Float(LitFloat)

Bool(LitBool)

Verbatim(Literal)

Implementations

impl Lit

pub fn new(token: Literal) -> Self

pub fn suffix(&self) -> &str

pub fn span(&self) -> Span

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

Trait Implementations

impl Clone for Lit

fn clone(&self) -> Self

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

impl From<Lit> for NestedMeta

fn from(e: Lit) -> NestedMeta

impl From<LitBool> for Lit

fn from(e: LitBool) -> Lit

impl From<LitByte> for Lit

fn from(e: LitByte) -> Lit

impl From<LitByteStr> for Lit

fn from(e: LitByteStr) -> Lit

impl From<LitChar> for Lit

fn from(e: LitChar) -> Lit

impl From<LitFloat> for Lit

fn from(e: LitFloat) -> Lit

impl From<LitInt> for Lit

fn from(e: LitInt) -> Lit

impl From<LitStr> for Lit

fn from(e: LitStr) -> Lit

impl Parse for Lit

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

impl ToTokens for Lit

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

fn to_token_stream(&self) -> TokenStream

fn into_token_stream(self) -> TokenStream

impl Token for Lit

Auto Trait Implementations

impl RefUnwindSafe for Lit

impl !Send for Lit

impl !Sync for Lit

impl Unpin for Lit

impl UnwindSafe for Lit

Blanket Implementations

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

pub fn type_id(&self) -> TypeId

impl<T> Borrow<T> for T where T: ?Sized,

pub fn borrow(&self) -> &T

impl<T> BorrowMut<T> for T where T: ?Sized,

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

impl<T> From<T> for T

pub fn from(t: T) -> T

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

pub fn into(self) -> U

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

fn span(&self) -> Span

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

type Owned = T

pub fn to_owned(&self) -> T

pub fn clone_into(&self, target: &mut T)

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

type Error = Infallible

pub fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

impl<T, U> TryInto<U> for T where U: TryFrom<T>,

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

pub fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

`Str(LitStr)`

`ByteStr(LitByteStr)`

`Byte(LitByte)`

`Char(LitChar)`

`Int(LitInt)`

`Float(LitFloat)`

`Bool(LitBool)`

`Verbatim(Literal)`

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

impl<T> Borrow<T> for T where
T: ?Sized,

impl<T> BorrowMut<T> for T where
T: ?Sized,

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

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

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

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

impl<T, U> TryInto<U> for T where
U: TryFrom<T>,