pub enum Scalar {
    Initialized {
        value: Primitive,
        valid_range: WrappingRange,
    },
    Union {
        value: Primitive,
    },
}
Expand description

Information about one scalar component of a Rust type.

Variants

Initialized

Fields

value: Primitive
valid_range: WrappingRange

Union

Fields

value: Primitive

Even for unions, we need to use the correct registers for the kind of values inside the union, so we keep the Primitive type around. We also use it to compute the size of the scalar. However, unions never have niches and even allow undef, so there is no valid_range.

Implementations

Get the primitive representation of this type, ignoring the valid range and whether the value is allowed to be undefined (due to being a union).

Allows the caller to mutate the valid range. This operation will panic if attempted on a union.

Returns true if all possible numbers are valid, i.e valid_range covers the whole layout

Returns true if this type can be left uninit.

Trait Implementations

Returns a copy of the value. Read more

Performs copy-assignment from source. Read more

Formats the value using the given formatter. Read more

Feeds this value into the given Hasher. Read more

Feeds a slice of this type into the given Hasher. Read more

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

This method tests for !=.

Auto Trait Implementations

Blanket Implementations

Gets the TypeId of self. Read more

Immutably borrows from an owned value. Read more

Mutably borrows from an owned value. Read more

Returns the argument unchanged.

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

The resulting type after obtaining ownership.

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

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

The type returned in the event of a conversion error.

Performs the conversion.

The type returned in the event of a conversion 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: 40 bytes

Size for each variant:

  • Initialized: 39 bytes
  • Union: 2 bytes