Enum rustc_ast::ast::LitKind

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pub enum LitKind {
    Str(Symbol, StrStyle),
    ByteStr(Lrc<[u8]>),
    Byte(u8),
    Char(char),
    Int(u128, LitIntType),
    Float(Symbol, LitFloatType),
    Bool(bool),
    Err(Symbol),
}

Expand description

Literal kind.

E.g., "foo", 42, 12.34, or bool.

Variants

`ByteStr(Lrc<[u8]>)`

A byte string (b"foo").

`Byte(u8)`

A byte char (b'f').

`Char(char)`

A character literal ('a').

`Bool(bool)`

A boolean literal.

`Err(Symbol)`

Placeholder for a literal that wasn’t well-formed in some way.

Implementations

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impl LitKind

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pub fn from_lit_token(lit: Lit) -> Result<LitKind, LitError>

Converts literal token into a semantic literal.

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pub fn to_lit_token(&self) -> Lit

Attempts to recover a token from semantic literal. This function is used when the original token doesn’t exist (e.g. the literal is created by an AST-based macro) or unavailable (e.g. from HIR pretty-printing).

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impl LitKind

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pub fn is_str(&self) -> bool

Returns true if this literal is a string.

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pub fn is_bytestr(&self) -> bool

Returns true if this literal is byte literal string.

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pub fn is_numeric(&self) -> bool

Returns true if this is a numeric literal.

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pub fn is_unsuffixed(&self) -> bool

Returns true if this literal has no suffix. Note: this will return true for literals with prefixes such as raw strings and byte strings.

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pub fn is_suffixed(&self) -> bool

Returns true if this literal has a suffix.

Trait Implementations

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impl Clone for LitKind

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fn clone(&self) -> LitKind

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

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impl Debug for LitKind

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

Formats the value using the given formatter. Read more

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

Feeds this value into the given Hasher. Read more

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

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

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impl<CTX> HashStable<CTX> for LitKind where
__CTX: HashStableContext,

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fn hash_stable(&self, hcx: &mut CTX, __hasher: &mut StableHasher)

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impl PartialEq<LitKind> for LitKind

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

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

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

This method tests for !=.

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impl Eq for LitKind

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impl StructuralEq for LitKind

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impl StructuralPartialEq for LitKind

Auto Trait Implementations

impl RefUnwindSafe for LitKind

impl !Send for LitKind

impl !Sync for LitKind

impl Unpin for LitKind

impl UnwindSafe for LitKind

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,

const: unstable · source

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

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

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

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> ToOwned for T where
T: Clone,

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, 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.

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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

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

Performs the conversion.

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: 24 bytes

Size for each variant:

Str: 7 bytes
ByteStr: 23 bytes
Byte: 1 byte
Char: 7 bytes
Int: 23 bytes
Float: 7 bytes
Bool: 1 byte
Err: 7 bytes

Enum rustc_ast::ast::LitKind

Variants

Str(Symbol, StrStyle)

ByteStr(Lrc<[u8]>)

Byte(u8)

Char(char)

Int(u128, LitIntType)

Float(Symbol, LitFloatType)

Bool(bool)

Err(Symbol)

Implementations

impl LitKind

pub fn from_lit_token(lit: Lit) -> Result<LitKind, LitError>

pub fn to_lit_token(&self) -> Lit

impl LitKind

pub fn is_str(&self) -> bool

pub fn is_bytestr(&self) -> bool

pub fn is_numeric(&self) -> bool

pub fn is_unsuffixed(&self) -> bool

pub fn is_suffixed(&self) -> bool

Trait Implementations

impl Clone for LitKind

fn clone(&self) -> LitKind

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

impl Debug for LitKind

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

impl<__D: Decoder> Decodable<__D> for LitKind

fn decode(__decoder: &mut __D) -> Self

impl<__E: Encoder> Encodable<__E> for LitKind

fn encode(&self, __encoder: &mut __E)

impl Hash for LitKind

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

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

impl<__CTX> HashStable<__CTX> for LitKind where __CTX: HashStableContext,

fn hash_stable(&self, __hcx: &mut __CTX, __hasher: &mut StableHasher)

impl PartialEq<LitKind> for LitKind

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

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

impl Eq for LitKind

impl StructuralEq for LitKind

impl StructuralPartialEq for LitKind

Auto Trait Implementations

impl RefUnwindSafe for LitKind

impl !Send for LitKind

impl !Sync for LitKind

impl Unpin for LitKind

impl UnwindSafe for LitKind

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> 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

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

Layout

`Str(Symbol, StrStyle)`

`ByteStr(Lrc<[u8]>)`

`Byte(u8)`

`Char(char)`

`Int(u128, LitIntType)`

`Float(Symbol, LitFloatType)`

`Bool(bool)`

`Err(Symbol)`

impl<D: Decoder> Decodable<D> for LitKind

fn decode(decoder: &mut D) -> Self

impl<E: Encoder> Encodable<E> for LitKind

fn encode(&self, encoder: &mut E)

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

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

impl<CTX> HashStable<CTX> for LitKind where
__CTX: HashStableContext,

fn hash_stable(&self, hcx: &mut CTX, __hasher: &mut StableHasher)

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> 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>,