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Tweak Option inference to support more cases with other derive macros #382

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Tweak Option inference to support more cases with other derive macros #382

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7 changes: 6 additions & 1 deletion validator_derive/src/types.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -151,7 +151,12 @@ impl ValidateField {

/// How many Option<Option< are there before the actual field
pub fn number_options(&self) -> u8 {
fn find_option(mut count: u8, ty: &syn::Type) -> u8 {
fn find_option(mut count: u8, mut ty: &syn::Type) -> u8 {
// Unwrap `Type::Group`s, these might occur when used with other derive macros.
while let syn::Type::Group(inner) = ty {
ty = &inner.elem;
}

if let syn::Type::Path(p) = ty {
let idents_of_path =
p.path.segments.iter().fold(String::new(), |mut acc, v| {
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