Enum Lit

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

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

This type is available if Syn is built with the "derive" or "full" feature.

§Syntax tree enum

This type is a syntax tree enum.

Variants§

§

Str(LitStr)

A UTF-8 string literal: "foo".

This type is available if Syn is built with the "derive" or "full" feature.

§

ByteStr(LitByteStr)

A byte string literal: b"foo".

This type is available if Syn is built with the "derive" or "full" feature.

§

Byte(LitByte)

A byte literal: b'f'.

This type is available if Syn is built with the "derive" or "full" feature.

§

Char(LitChar)

A character literal: 'a'.

This type is available if Syn is built with the "derive" or "full" feature.

§

Int(LitInt)

An integer literal: 1 or 1u16.

Holds up to 64 bits of data. Use LitVerbatim for any larger integer literal.

This type is available if Syn is built with the "derive" or "full" feature.

§

Float(LitFloat)

A floating point literal: 1f64 or 1.0e10f64.

Must be finite. May not be infinte or NaN.

This type is available if Syn is built with the "derive" or "full" feature.

§

Bool(LitBool)

A boolean literal: true or false.

This type is available if Syn is built with the "derive" or "full" feature.

§

Verbatim(LitVerbatim)

A raw token literal not interpreted by Syn, possibly because it represents an integer larger than 64 bits.

This type is available if Syn is built with the "derive" or "full" feature.

Implementations§

Source§

impl Lit

Source

pub fn new(token: Literal, span: Span) -> Self

Interpret a Syn literal from a proc-macro2 literal.

Not all proc-macro2 literals are valid Syn literals. In particular, doc comments are considered by proc-macro2 to be literals but in Syn they are Attribute.

§Panics

Panics if the input is a doc comment literal.

Trait Implementations§

Source§

impl Clone for Lit

Source§

fn clone(&self) -> Lit

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, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
Source§

impl From<Lit> for NestedMeta

Source§

fn from(e: Lit) -> NestedMeta

Converts to this type from the input type.
Source§

impl From<LitBool> for Lit

Source§

fn from(e: LitBool) -> Lit

Converts to this type from the input type.
Source§

impl From<LitByte> for Lit

Source§

fn from(e: LitByte) -> Lit

Converts to this type from the input type.
Source§

impl From<LitByteStr> for Lit

Source§

fn from(e: LitByteStr) -> Lit

Converts to this type from the input type.
Source§

impl From<LitChar> for Lit

Source§

fn from(e: LitChar) -> Lit

Converts to this type from the input type.
Source§

impl From<LitFloat> for Lit

Source§

fn from(e: LitFloat) -> Lit

Converts to this type from the input type.
Source§

impl From<LitInt> for Lit

Source§

fn from(e: LitInt) -> Lit

Converts to this type from the input type.
Source§

impl From<LitStr> for Lit

Source§

fn from(e: LitStr) -> Lit

Converts to this type from the input type.
Source§

impl From<LitVerbatim> for Lit

Source§

fn from(e: LitVerbatim) -> Lit

Converts to this type from the input type.
Source§

impl Hash for Lit

Source§

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

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, Self: Sized,

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

impl PartialEq for Lit

Source§

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

Tests for self and other values to be equal, and is used by ==.
1.0.0 · Source§

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
Source§

impl Synom for Lit

Source§

fn parse(input: Cursor<'_>) -> PResult<'_, Self>

Source§

fn description() -> Option<&'static str>

Source§

impl ToTokens for Lit

Source§

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

Write self to the given Tokens. Read more
Source§

fn into_tokens(self) -> Tokens
where Self: Sized,

Convert self directly into a Tokens object. Read more
Source§

impl Eq for Lit

Source§

impl StructuralPartialEq for Lit

Auto Trait Implementations§

§

impl Freeze for Lit

§

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,

Source§

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
Source§

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

Source§

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

Mutably borrows from an owned value. Read more
Source§

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

Source§

unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. Read more
Source§

impl<T> From<T> for T

Source§

fn from(t: T) -> T

Returns the argument unchanged.

Source§

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

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: ToTokens,

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.
Source§

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

Source§

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)

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

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

Source§

type Error = Infallible

The type returned in the event of a conversion error.
Source§

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

Performs the conversion.
Source§

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

Source§

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

The type returned in the event of a conversion error.
Source§

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

Performs the conversion.