Enum clippy_utils::consts::Constant

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pub enum Constant<'tcx> {
Show 16 variants Adt(Const<'tcx>), Str(String), Binary(Lrc<[u8]>), Char(char), Int(u128), F16(f16), F32(f32), F64(f64), F128(f128), Bool(bool), Vec(Vec<Constant<'tcx>>), Repeat(Box<Constant<'tcx>>, u64), Tuple(Vec<Constant<'tcx>>), RawPtr(u128), Ref(Box<Constant<'tcx>>), Err,
}
Expand description

A LitKind-like enum to fold constant Exprs into.

Variants§

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Adt(Const<'tcx>)

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Str(String)

A String (e.g., “abc”).

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Binary(Lrc<[u8]>)

A binary string (e.g., b"abc").

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Char(char)

A single char (e.g., 'a').

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Int(u128)

An integer’s bit representation.

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F16(f16)

An f16.

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F32(f32)

An f32.

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F64(f64)

An f64.

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F128(f128)

An f128.

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Bool(bool)

true or false.

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Vec(Vec<Constant<'tcx>>)

An array of constants.

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Repeat(Box<Constant<'tcx>>, u64)

Also an array, but with only one constant, repeated N times.

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Tuple(Vec<Constant<'tcx>>)

A tuple of constants.

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RawPtr(u128)

A raw pointer.

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Ref(Box<Constant<'tcx>>)

A reference

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Err

A literal with syntax error.

Implementations§

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impl<'tcx> Constant<'tcx>

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pub fn partial_cmp( tcx: TyCtxt<'_>, cmp_type: Ty<'_>, left: &Self, right: &Self, ) -> Option<Ordering>

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pub fn int_value( &self, cx: &LateContext<'_>, val_type: Ty<'_>, ) -> Option<FullInt>

Returns the integer value or None if self or val_type is not integer type.

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pub fn peel_refs(self) -> Self

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fn parse_f16(s: &str) -> Self

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fn parse_f128(s: &str) -> Self

Trait Implementations§

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impl<'tcx> Clone for Constant<'tcx>

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fn clone(&self) -> Constant<'tcx>

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl<'tcx> Debug for Constant<'tcx>

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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<'tcx> Hash for Constant<'tcx>

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

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, Self: Sized,

Feeds a slice of this type into the given Hasher. Read more
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impl<'tcx> PartialEq for Constant<'tcx>

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

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

Auto Trait Implementations§

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impl<'tcx> Freeze for Constant<'tcx>

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impl<'tcx> !RefUnwindSafe for Constant<'tcx>

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impl<'tcx> Send for Constant<'tcx>

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impl<'tcx> Sync for Constant<'tcx>

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impl<'tcx> Unpin for Constant<'tcx>

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impl<'tcx> !UnwindSafe for Constant<'tcx>

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> CloneToUninit for T
where T: Clone,

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default unsafe fn clone_to_uninit(&self, dst: *mut T)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dst. 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> IntoEither for T

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fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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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: 48 bytes

Size for each variant:

  • Adt: 40 bytes
  • Str: 32 bytes
  • Binary: 24 bytes
  • Char: 12 bytes
  • Int: 32 bytes
  • F16: 10 bytes
  • F32: 12 bytes
  • F64: 16 bytes
  • F128: 32 bytes
  • Bool: 9 bytes
  • Vec: 32 bytes
  • Repeat: 24 bytes
  • Tuple: 32 bytes
  • RawPtr: 32 bytes
  • Ref: 16 bytes
  • Err: 0 bytes