alef 0.84.2

Opinionated polyglot binding generator for Rust libraries
Documentation 
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 if {{ name }} == 0 {
        set_last_error(ALEF_INVALID_HANDLE_ERROR, "zero is not a valid handle for parameter '{{ name }}'");
        {{ fail_ret }}
    }
    let {{ rs_name }}_ptr = match locked_handle_ptr::<{{ qualified }}>(&mut __alef_guards, {{ name }}) {
        Ok(value) => value,
        Err(error) => { set_handle_error(&error); {{ fail_ret }} }
    };
    // SAFETY: the registry entry guard remains held for the duration of this call.
    let {{ rs_name }} = {% if is_mut %}unsafe { &mut *{{ rs_name }}_ptr }{% elif is_ref %}unsafe { &*{{ rs_name }}_ptr }{% else %}unsafe { &*{{ rs_name }}_ptr }.clone(){% endif %};