Breaking news В CPython предлагают добавить Rust: https://discuss.python.org/t/prepeprustforcpython/104906 Пример кода: | yihong0618 和朋友们的频道

2025/11/17 23:12

Breaking news
В CPython предлагают добавить Rust: https://discuss.python.org/t/pre-pep-rust-for-cpython/104906
Пример кода: https://github.com/emmatyping/cpython/pull/13/files
#[unsafe(no_mangle)]
pub unsafe extern "C" fn b64encode(
_module: *mut PyObject,
args: mut mut PyObject,
nargs: Py_ssize_t,
) -> *mut PyObject {
if nargs != 1 {
unsafe {
PyErr_SetString(
PyExc_TypeError,
c"b64encode() takes exactly one argument".as_ptr(),
);
}
return ptr::null_mut();
}
let source = unsafe { *args };
let buffer = match unsafe { BorrowedBuffer::from_object(source) } {
Ok(buf) => buf,
Err(_) => return ptr::null_mut(),
};
let view_len = buffer.len();
if view_len < 0 {
unsafe {
PyErr_SetString(
PyExc_TypeError,
c"b64encode() argument has negative length".as_ptr(),
);
}
return ptr::null_mut();
}
let input_len = view_len as usize;
let input = unsafe { slice::from_raw_parts(buffer.as_ptr(), input_len) };
let Some(output_len) = encoded_output_len(input_len) else {
unsafe {
PyErr_NoMemory();
}
return ptr::null_mut();
};
if output_len > isize::MAX as usize {
unsafe {
PyErr_NoMemory();
}
return ptr::null_mut();
}
let result = unsafe {
PyBytes_FromStringAndSize(ptr::null(), output_len as Py_ssize_t)
};
if result.is_null() {
return ptr::null_mut();
}
let dest_ptr = unsafe { PyBytes_AsString(result) };
if dest_ptr.is_null() {
unsafe {
Py_DecRef(result);
}
return ptr::null_mut();
}
let dest = unsafe { slice::from_raw_parts_mut(dest_ptr.cast::<u8>(), output_len) };
let written = encode_into(input, dest);
debug_assert_eq!(written, output_len);
result
}
Все подробности будут в @cpython_notes
Обсуждение: что думаете?
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