alef 0.115.5

Opinionated polyglot binding generator for Rust libraries
Documentation 
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/// Convert a `{{ rust_path }}` error to a typed Ruby exception.
#[allow(dead_code)]
fn {{ fn_name }}(e: {{ rust_path }}) -> magnus::Error {
    use magnus::prelude::*;
    let message = e.to_string();
    let ruby = unsafe { magnus::Ruby::get_unchecked() };
    #[allow(unreachable_patterns)]
    let class_name = match &e {
{% for variant in variants %}        {{ variant.pattern }} => "{{ variant.class_name }}",
{% endfor %}        _ => "{{ base_class }}",
    };
    let build = || -> Result<magnus::Error, magnus::Error> {
        let module = ruby.define_module("{{ module_name }}")?;
        let class: magnus::ExceptionClass = module.const_get(class_name)?;
        let exception = class.new_instance((message.as_str(),))?;
{% for field in info %}        exception.funcall::<_, _, magnus::Value>("instance_variable_set", ("@{{ field.name }}", {{ field.value }}))?;
{% endfor %}        Ok(magnus::Error::from(exception))
    };
    build().unwrap_or_else(|_| magnus::Error::new(ruby.exception_runtime_error(), message))
}