Enum syn::Lit

source · [−]

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

source

impl Lit

source

pub fn new(token: Literal) -> Self

Interpret a Syn literal from a proc-macro2 literal.

source

pub fn suffix(&self) -> &str

source

pub fn span(&self) -> Span

source

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

Trait Implementations

source

impl Clone for Lit

source

fn clone(&self) -> Self

Returns a copy of the value. Read more

1.0.0 · source

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

Performs copy-assignment from source. Read more

source

impl Debug for Lit

source

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

Formats the value using the given formatter. Read more

source

impl From<Lit> for NestedMeta

source

fn from(e: Lit) -> NestedMeta

Performs the conversion.

source

impl From<LitBool> for Lit

source

fn from(e: LitBool) -> Lit

Performs the conversion.

source

impl From<LitByte> for Lit

source

fn from(e: LitByte) -> Lit

Performs the conversion.

source

impl From<LitByteStr> for Lit

source

fn from(e: LitByteStr) -> Lit

Performs the conversion.

source

impl From<LitChar> for Lit

source

fn from(e: LitChar) -> Lit

Performs the conversion.

source

impl From<LitFloat> for Lit

source

fn from(e: LitFloat) -> Lit

Performs the conversion.

source

impl From<LitInt> for Lit

source

fn from(e: LitInt) -> Lit

Performs the conversion.

source

impl From<LitStr> for Lit

source

fn from(e: LitStr) -> Lit

Performs the conversion.

source

impl Hash for Lit

source

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

Feeds this value into the given Hasher. Read more

1.3.0 · source

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

Feeds a slice of this type into the given Hasher. Read more

source

fn eq(&self, other: &Self) -> bool

This method tests for self and other values to be equal, and is used by ==. Read more

1.0.0 · source

fn ne(&self, other: &Rhs) -> bool

This method tests for !=.

source

impl ToTokens for Lit

source

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

Write self to the given TokenStream. Read more

source

fn to_token_stream(&self) -> TokenStream

Convert self directly into a TokenStream object. Read more

source

fn into_token_stream(self) -> TokenStream

Convert self directly into a TokenStream object. Read more

source

impl Eq for Lit

source

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

source

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

source

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

source

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

const: unstable · source

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

source

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

const: unstable · source

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

Mutably borrows from an owned value. Read more

source

impl<T> From<T> for T

const: unstable · source

fn from(t: T) -> T

Returns the argument unchanged.

source

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

const: unstable · source

fn into(self) -> U

Calls U::from(self).

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

source

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

source

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

source

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

type Owned = T

The resulting type after obtaining ownership.

source

fn to_owned(&self) -> T

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

source

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

source

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

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

Performs the conversion.

source

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

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 Debug for Lit

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

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 Hash for Lit

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

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

impl Parse for Lit

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

impl PartialEq<Lit> for Lit

fn eq(&self, other: &Self) -> bool

fn ne(&self, other: &Rhs) -> bool

impl ToTokens for Lit

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

fn to_token_stream(&self) -> TokenStream

fn into_token_stream(self) -> TokenStream

impl Eq for Lit

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,

fn type_id(&self) -> TypeId

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

fn borrow(&self) -> &T

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

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

impl<T> From<T> for T

fn from(t: T) -> T

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

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

fn to_owned(&self) -> T

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

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

type Error = Infallible

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

`Str(LitStr)`

`ByteStr(LitByteStr)`

`Byte(LitByte)`

`Char(LitChar)`

`Int(LitInt)`

`Float(LitFloat)`

`Bool(LitBool)`

`Verbatim(Literal)`

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

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

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>,