xgo/objects/builtin_module.go

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package objects
// BuiltinModule is an importable module that's written in Go.
type BuiltinModule struct {
Attrs map[string]Object
}
// Import returns an immutable map for the module.
func (m *BuiltinModule) Import(name string) (interface{}, error) {
attrs := make(map[string]Object, len(m.Attrs))
for k, v := range m.Attrs {
attrs[k] = v.Copy()
}
attrs["__module_name__"] = &String{Value: name}
return &ImmutableMap{Value: attrs}, nil
}