alef 0.110.4

Opinionated polyglot binding generator for Rust libraries
Documentation 
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#[extendr]
pub fn new_{{ type_name_lower }}(
{% for field in params -%}
    {{ field.name }}: {{ field.type }}{{ "," if not loop.last else "" }}
{% endfor -%}
) -> {% if has_named_enum %}extendr_api::Result<{{ type_name }}>{% else %}{{ type_name }}{% endif %} {
    let mut __out = <{{ type_name }}>::default();
{% for field in body_assignments -%}
{% if field.is_named_enum %}
    if let Some(v) = {{ field.name }} {
        let parsed = serde_json::from_value(serde_json::Value::String(v))
            .map_err(|e| extendr_api::Error::Other(format!("invalid value for `{{ field.name }}`: {e}")))?;
{% if field.optional_enum %}        __out.{{ field.name }} = Some(parsed);
{% else %}        __out.{{ field.name }} = parsed;
{% endif %}    }
{% elif field.optional_value %}
    if let Some(v) = {{ field.name }} { __out.{{ field.name }} = Some(v); }
{% else %}
    if let Some(v) = {{ field.name }} { __out.{{ field.name }} = v; }
{% endif %}
{% endfor -%}
    {% if has_named_enum %}Ok(__out){% else %}__out{% endif %}
}