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TCTags as PassByValue

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This commit is contained in:
Dustin J. Mitchell 2022-02-06 05:04:44 +00:00
parent 23ba6a57b3
commit f4c6e04d44
7 changed files with 227 additions and 91 deletions
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8
lib/src/uuid.rs
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@ -54,7 +54,9 @@ pub extern "C" fn tc_uuid_to_buf<'a>(tcuuid: TCUuid, buf: *mut libc::c_char) {
let buf: &'a mut [u8] = unsafe {
std::slice::from_raw_parts_mut(buf as *mut u8, ::uuid::adapter::Hyphenated::LENGTH)
};
let uuid: Uuid = Uuid::from_arg(tcuuid);
// SAFETY:
// - tcuuid is a valid TCUuid (all byte patterns are valid)
let uuid: Uuid = unsafe { Uuid::from_arg(tcuuid) };
uuid.to_hyphenated().encode_lower(buf);
}
@ -62,7 +64,9 @@ pub extern "C" fn tc_uuid_to_buf<'a>(tcuuid: TCUuid, buf: *mut libc::c_char) {
/// at least TC_UUID_STRING_BYTES long. No NUL terminator is added.
#[no_mangle]
pub extern "C" fn tc_uuid_to_str(tcuuid: TCUuid) -> *mut TCString<'static> {
let uuid: Uuid = Uuid::from_arg(tcuuid);
// SAFETY:
// - tcuuid is a valid TCUuid (all byte patterns are valid)
let uuid: Uuid = unsafe { Uuid::from_arg(tcuuid) };
let s = uuid.to_string();
// SAFETY: see TCString docstring
unsafe { TCString::from(s).return_val() }