alef 0.78.0

Opinionated polyglot binding generator for Rust libraries
Documentation 
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{% if source_cfg -%}
#[cfg({{ source_cfg }})]
{% endif -%}
/// Serialize a `{{ enum_name }}` to a JSON string. Returns null on failure.
/// # 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_json(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();
    }
    match with_handle::<{{ qualified }}, _>(handle, serde_json::to_string) {
        Err(error) => { set_handle_error(&error); std::ptr::null_mut() }
        Ok(Err(error)) => { set_last_error(2, &error.to_string()); std::ptr::null_mut() }
        Ok(Ok(s)) => match CString::new(s) {
            Ok(cs) => cs.into_raw(),
            Err(e) => {
                set_last_error(2, &e.to_string());
                std::ptr::null_mut()
            }
        }
    }
    })
}