Function repr_offset::offset_calc::next_field_offset

pub const fn next_field_offset<Struct, Prev, Next>(
    previous_offset: usize
) -> usize

Calculates the offset of a field in bytes,given the previous field.

Parameters

Struct is the struct that contains the field that this calculates the offset for.

Prev is the type of the previous field.

Next is the type of the field that this calculates the offset for.

previous_offset is the offset in bytes of the previous field,of Prev type.

Example

use repr_offset::offset_calc::next_field_offset;

#[repr(C, packed)]
struct Foo(u8, u16, u32, u64);

assert_eq!( OFFSET_1, 1 );
assert_eq!( OFFSET_2, 3 );
assert_eq!( OFFSET_3, 7 );

const OFFSET_0: usize = 0;
const OFFSET_1: usize = next_field_offset::<Foo, u8, u16>(OFFSET_0);
const OFFSET_2: usize = next_field_offset::<Foo, u16, u32>(OFFSET_1);
const OFFSET_3: usize = next_field_offset::<Foo, u32, u64>(OFFSET_2);