alef 0.25.39

Opinionated polyglot binding generator for Rust libraries
Documentation 
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let {{ visitor_kwarg }}_handle: Option<{{ handle_path }}> = {{ visitor_kwarg }}.map(|v| {
        let bridge = {{ struct_name }}::new(v);
        std::sync::Arc::new(std::sync::Mutex::new(bridge)) as {{ handle_path }}
    });
    let {{ options_name }}_core: Option<{{ options_path }}> = {{ options_name }}.map(|mut o| {
        o.{{ field_name }} = None;
        let mut result: {{ options_path }} = o.into();
        result.{{ field_name }} = {{ visitor_kwarg }}_handle.clone();
        result
    }).or_else(|| {
        if {{ visitor_kwarg }}_handle.is_some() {
            let mut opts = {{ options_path }}::default();
            opts.{{ field_name }} = {{ visitor_kwarg }}_handle.clone();
            Some(opts)
        } else {
            None
        }
    });
{% if has_error %}
{% if return_wrap == "val" %}
    {{ core_call }}{{ err_conv }}
{% else %}
    {{ core_call }}.map(|val| {{ return_wrap }}){{ err_conv }}
{% endif %}
{% else %}
    {{ core_call }}
{% endif %}