Enum rustc_ast_passes::ast_validation::ForbiddenLetReason

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enum ForbiddenLetReason {
    ForbiddenWithOr(Span),
    GenericForbidden,
}

Expand description

Used to forbid let expressions in certain syntactic locations.

Variants

`ForbiddenWithOr(Span)`

A let chain with the || operator

`GenericForbidden`

let is not valid and the source environment is not important

Trait Implementations

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impl Clone for ForbiddenLetReason

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fn clone(&self) -> ForbiddenLetReason

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 Copy for ForbiddenLetReason

Auto Trait Implementations

impl RefUnwindSafe for ForbiddenLetReason

impl !Send for ForbiddenLetReason

impl !Sync for ForbiddenLetReason

impl Unpin for ForbiddenLetReason

impl UnwindSafe for ForbiddenLetReason

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)

🔬 This is a nightly-only experimental API. (toowned_clone_into)

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: 12 bytes

Size for each variant:

ForbiddenWithOr: 8 bytes
GenericForbidden: 0 bytes

Enum rustc_ast_passes::ast_validation::ForbiddenLetReason

Variants

`ForbiddenWithOr(Span)`

`GenericForbidden`

Trait Implementations

impl Clone for ForbiddenLetReason

fn clone(&self) -> ForbiddenLetReason

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

impl Copy for ForbiddenLetReason

Auto Trait Implementations

impl RefUnwindSafe for ForbiddenLetReason

impl !Send for ForbiddenLetReason

impl !Sync for ForbiddenLetReason

impl Unpin for ForbiddenLetReason

impl UnwindSafe for ForbiddenLetReason

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

Enum rustc_ast_passes::ast_validation::ForbiddenLetReason

Variants

ForbiddenWithOr(Span)

GenericForbidden

Trait Implementations

impl Clone for ForbiddenLetReason

fn clone(&self) -> ForbiddenLetReason

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

impl Copy for ForbiddenLetReason

Auto Trait Implementations

impl RefUnwindSafe for ForbiddenLetReason

impl !Send for ForbiddenLetReason

impl !Sync for ForbiddenLetReason

impl Unpin for ForbiddenLetReason

impl UnwindSafe for ForbiddenLetReason

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

`ForbiddenWithOr(Span)`

`GenericForbidden`

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>,