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use crate::marker::PhantomData;
use crate::slice;
use libc::{__wasi_ciovec_t, __wasi_iovec_t, c_void};
#[repr(transparent)]
pub struct IoVec<'a> {
vec: __wasi_ciovec_t,
_p: PhantomData<&'a [u8]>,
}
impl<'a> IoVec<'a> {
#[inline]
pub fn new(buf: &'a [u8]) -> IoVec<'a> {
IoVec {
vec: __wasi_ciovec_t {
buf: buf.as_ptr() as *const c_void,
buf_len: buf.len(),
},
_p: PhantomData,
}
}
#[inline]
pub fn as_slice(&self) -> &[u8] {
unsafe {
slice::from_raw_parts(self.vec.buf as *const u8, self.vec.buf_len)
}
}
}
pub struct IoVecMut<'a> {
vec: __wasi_iovec_t,
_p: PhantomData<&'a mut [u8]>,
}
impl<'a> IoVecMut<'a> {
#[inline]
pub fn new(buf: &'a mut [u8]) -> IoVecMut<'a> {
IoVecMut {
vec: __wasi_iovec_t {
buf: buf.as_mut_ptr() as *mut c_void,
buf_len: buf.len()
},
_p: PhantomData,
}
}
#[inline]
pub fn as_slice(&self) -> &[u8] {
unsafe {
slice::from_raw_parts(self.vec.buf as *const u8, self.vec.buf_len)
}
}
#[inline]
pub fn as_mut_slice(&mut self) -> &mut [u8] {
unsafe {
slice::from_raw_parts_mut(self.vec.buf as *mut u8, self.vec.buf_len)
}
}
}
|
