pub enum CsFold<'a> {
    Single(&'a FieldInfo),
    Combine(Span, P<Expr>, P<Expr>),
    Fieldless,
}
Expand description

The function passed to cs_fold is called repeatedly with a value of this type. It describes one part of the code generation. The result is always an expression.

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Single(&'a FieldInfo)

The basic case: a field expression for one or more selflike args. E.g. for PartialEq::eq this is something like self.x == other.x.

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Combine(Span, P<Expr>, P<Expr>)

The combination of two field expressions. E.g. for PartialEq::eq this is something like <field1 equality> && <field2 equality>.

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Fieldless

Auto Trait Implementations§

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impl<'a> !RefUnwindSafe for CsFold<'a>

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impl<'a> !Send for CsFold<'a>

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impl<'a> !Sync for CsFold<'a>

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impl<'a> Unpin for CsFold<'a>

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impl<'a> !UnwindSafe for CsFold<'a>

Blanket Implementations§

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impl<T> Any for Twhere 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 Twhere 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 Twhere 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 Twhere 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, U> TryFrom<U> for Twhere 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 Twhere 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: 32 bytes

Size for each variant:

  • Single: 12 bytes
  • Combine: 28 bytes
  • Fieldless: 0 bytes