alef 0.79.5

Opinionated polyglot binding generator for Rust libraries
Documentation 
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{% if source_cfg -%}
#[cfg({{ source_cfg }})]
{% endif -%}
/// Render a `{{ enum_name }}` as its string representation
/// (the unit-variant name as serialized by serde — e.g. `"completed"`,
/// without surrounding JSON quotes).
/// # Safety
/// `handle` must be a valid, non-zero handle returned by a `{{ prefix }}` function.
/// The returned string must be freed with `{{ prefix }}_free_string`.
#[unsafe(no_mangle)]
pub unsafe extern "C" fn {{ prefix }}_{{ enum_snake }}_to_string(handle: AlefHandle) -> *mut c_char {
    catch_ffi_panic(std::ptr::null_mut(), || {
    clear_last_error();
    if handle == 0 {
        set_last_error(ALEF_INVALID_HANDLE_ERROR, "zero is not a valid handle");
        return std::ptr::null_mut();
    }
    let rendered = with_handle::<{{ qualified }}, _>(handle, |val| {
        serde_json::to_value(val)
            .ok()
            .and_then(|v| v.as_str().map(str::to_owned))
            .unwrap_or_default()
    });
    match rendered {
        Err(error) => { set_handle_error(&error); std::ptr::null_mut() }
        Ok(s) => match CString::new(s) {
            Ok(cs) => cs.into_raw(),
            Err(_) => {
                set_last_error(1, "{{ enum_name }} variant contained interior NUL byte");
                std::ptr::null_mut()
            }
        }
    }
    })
}