gpui-form-derive 0.7.0

Macro crate for gpui-form
Documentation 
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use syn::{GenericArgument, PathArguments, Type};

/// Checks if a type is Option<T> and returns (is_option, inner_type).
/// If not an Option, returns the original type as inner_type.
pub fn extract_option_inner_type(ty: &Type) -> (bool, Type) {
    if let Type::Path(type_path) = ty
        && let Some(last_segment) = type_path.path.segments.last()
        && last_segment.ident == "Option"
        && let PathArguments::AngleBracketed(args) = &last_segment.arguments
        && let Some(GenericArgument::Type(inner_type)) = args.args.first()
    {
        (true, inner_type.clone())
    } else {
        (false, ty.clone())
    }
}