# Enum rustc_infer::traits::WellFormedLoc

source ·

    pub enum WellFormedLoc {
        Ty(LocalDefId),
        Param {
            function: LocalDefId,
            param_idx: u16,
        },
    }

Expand description

The ‘location’ at which we try to perform HIR-based wf checking. This information is used to obtain an `hir::Ty`, which we can walk in order to obtain precise spans for any ‘nested’ types (e.g. `Foo` in `Option<Foo>`).

## Variants§

§

### Ty(LocalDefId)

Use the type of the provided definition.

§

### Param

#### Fields

§`function: LocalDefId`

The function to lookup the parameter in

§`param_idx: u16`

The index of the parameter to use. Parameters are indexed from 0, with the return type being the last ‘parameter’

Use the type of the parameter of the provided function. We cannot use `hir::Param`, since the function may not have a body (e.g. a trait method definition)

## Auto Trait Implementations§

§

### impl RefUnwindSafe for WellFormedLoc

§

### impl Send for WellFormedLoc

§

### impl Sync for WellFormedLoc

§

### impl Unpin for WellFormedLoc

§

### impl UnwindSafe for WellFormedLoc

## Blanket Implementations§

source§

### impl<T> Any for T
where T: 'static + ?Sized,

source§

#### fn type_id(&self) -> TypeId

Gets the `TypeId` of `self`. Read more
source§

### impl<T> Borrow<T> for T
where T: ?Sized,

source§

#### fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
source§

### impl<T> BorrowMut<T> for T
where T: ?Sized,

source§

#### fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
source§

### impl<T> From<T> for T

source§

#### fn from(t: T) -> T

Returns the argument unchanged.

source§

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

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.

source§

### impl<T> ToOwned for T
where T: Clone,

§

#### type Owned = T

The resulting type after obtaining ownership.
source§

#### fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
source§

#### fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
source§

### impl<T, U> TryFrom<U> for T
where U: Into<T>,

§

#### type Error = Infallible

The type returned in the event of a conversion error.
source§

#### fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
source§

### impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

§

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

The type returned in the event of a conversion error.
source§

#### 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: 8 bytes

Size for each variant:

- `Ty`: 6 bytes
- `Param`: 6 bytes