Enum syntax::ast::LitKind

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

Literal kind.

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

Variants

Str(Symbol, StrStyle)

A string literal ("foo").

ByteStr(Lrc<Vec<u8>>)

A byte string (b"foo").

Byte(u8)

A byte char (b'f').

Char(char)

A character literal ('a').

Int(u128, LitIntType)

An integer literal (1).

Float(Symbol, FloatTy)

A float literal (1f64 or 1E10f64).

FloatUnsuffixed(Symbol)

A float literal without a suffix (1.0 or 1.0E10).

Bool(bool)

A boolean literal.

Err(Symbol)

A recovered character literal that contains mutliple chars, most likely a typo.

Methods

impl LitKind

pub fn is_str(&self) -> bool

Returns true if this literal is a string.

pub fn is_bytestr(&self) -> bool

Returns true if this literal is byte literal string.

pub fn is_numeric(&self) -> bool

Returns true if this is a numeric literal.

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.

pub fn is_suffixed(&self) -> bool

Returns true if this literal has a suffix.

impl LitKind

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).

Trait Implementations

impl PartialEq<LitKind> for LitKind

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

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

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

This method tests for !=.

impl Clone for LitKind

fn clone(&self) -> LitKind

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for LitKind

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

Formats the value using the given formatter.

impl Hash for LitKind

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

Feeds this value into the given [Hasher].

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

Feeds a slice of this type into the given [Hasher].

impl Encodable for LitKind

fn encode<__S: Encoder>(&self, s: &mut __S) -> Result<(), __S::Error>

impl Decodable for LitKind

fn decode<__D: Decoder>(d: &mut __D) -> Result<LitKind, __D::Error>