Struct simplicity_sys::c_jets::frame_ffi::CFrameItem

#[repr(C)]
pub struct CFrameItem {
    pub edge: *const c_uchar,
    pub len: size_t,
}

FrameItem for C FFI. This type is only used to pass data to the C FFI.

Fields

edge: *const c_uchar

len: size_t

Implementations

impl CFrameItem

pub unsafe fn new_read(n: usize, from: *const usize) -> Self

Initialize a new read frame. ‘n’ is the number of cells for the read frame. ‘from’ is a pointer to the beginning of the new slice for the array of u8 to hold the frame’s cells.

Note: The C implementation uses array of UWORD for from. UWORD maps to uint_fast16_t which maps to usize on both 32-bit and 64-bit platforms.

Safety

from must be a valid pointer to a contiguous allocation of at least n usizes.

pub unsafe fn new_write(n: usize, from: *mut usize) -> Self

Initialize a new write frame. ‘n’ is the number of cells for the write frame. ‘from’ is a pointer to the one-past-the-end of the new slice for the array of UWORDS to hold the frame’s cells.

Safety

from must be a valid pointer one past the end of a contiguous allocation of at least n usizes.

Trait Implementations

impl Debug for CFrameItem

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.