pub enum LiteralKind {
    Int {
        base: Base,
        empty_int: bool,
    },
    Float {
        base: Base,
        empty_exponent: bool,
    },
    Char {
        terminated: bool,
    },
    Byte {
        terminated: bool,
    },
    Str {
        terminated: bool,
    },
    ByteStr {
        terminated: bool,
    },
    CStr {
        terminated: bool,
    },
    RawStr {
        n_hashes: Option<u8>,
    },
    RawByteStr {
        n_hashes: Option<u8>,
    },
    RawCStr {
        n_hashes: Option<u8>,
    },
}
Expand description

Enum representing the literal types supported by the lexer.

Note that the suffix is not considered when deciding the LiteralKind in this type. This means that float literals like 1f32 are classified by this type as Int. (Compare against rustc_ast::token::LitKind and rustc_ast::ast::LitKind).

Variants§

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Int

Fields

§base: Base
§empty_int: bool

“12_u8”, “0o100”, “0b120i99”, “1f32”.

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Float

Fields

§base: Base
§empty_exponent: bool

“12.34f32”, “1e3”, but not “1f32”.

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Char

Fields

§terminated: bool

“‘a’”, “‘\’”, “‘’‘”, “’;”

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Byte

Fields

§terminated: bool

“b’a’”, “b’\‘”, “b’‘’”, “b’;”

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Str

Fields

§terminated: bool

““abc”“, ““abc”

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ByteStr

Fields

§terminated: bool

“b“abc”“, “b“abc”

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CStr

Fields

§terminated: bool

c"abc", c"abc

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RawStr

Fields

§n_hashes: Option<u8>

“r“abc”“, “r#“abc”#“, “r####“ab”###“c”####“, “r#“a”. None indicates an invalid literal.

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RawByteStr

Fields

§n_hashes: Option<u8>

“br“abc”“, “br#“abc”#“, “br####“ab”###“c”####“, “br#“a”. None indicates an invalid literal.

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RawCStr

Fields

§n_hashes: Option<u8>

cr"abc", “cr#“abc”#“, cr#"a. None indicates an invalid literal.

Trait Implementations§

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impl Clone for LiteralKind

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fn clone(&self) -> LiteralKind

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 LiteralKind

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

Formats the value using the given formatter. Read more
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impl Ord for LiteralKind

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fn cmp(&self, other: &LiteralKind) -> Ordering

This method returns an Ordering between self and other. Read more
1.21.0 · source§

fn max(self, other: Self) -> Self
where Self: Sized,

Compares and returns the maximum of two values. Read more
1.21.0 · source§

fn min(self, other: Self) -> Self
where Self: Sized,

Compares and returns the minimum of two values. Read more
1.50.0 · source§

fn clamp(self, min: Self, max: Self) -> Self
where Self: Sized + PartialOrd,

Restrict a value to a certain interval. Read more
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impl PartialEq for LiteralKind

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

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

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

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl PartialOrd for LiteralKind

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fn partial_cmp(&self, other: &LiteralKind) -> Option<Ordering>

This method returns an ordering between self and other values if one exists. Read more
1.0.0 · source§

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

This method tests less than (for self and other) and is used by the < operator. Read more
1.0.0 · source§

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

This method tests less than or equal to (for self and other) and is used by the <= operator. Read more
1.0.0 · source§

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

This method tests greater than (for self and other) and is used by the > operator. Read more
1.0.0 · source§

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

This method tests greater than or equal to (for self and other) and is used by the >= operator. Read more
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impl Copy for LiteralKind

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impl Eq for LiteralKind

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impl StructuralPartialEq for LiteralKind

Auto Trait Implementations§

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,

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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,

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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

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fn from(t: T) -> T

Returns the argument unchanged.

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

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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,

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

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::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: 3 bytes

Size for each variant:

  • Int: 2 bytes
  • Float: 2 bytes
  • Char: 1 byte
  • Byte: 1 byte
  • Str: 1 byte
  • ByteStr: 1 byte
  • CStr: 1 byte
  • RawStr: 2 bytes
  • RawByteStr: 2 bytes
  • RawCStr: 2 bytes