21     pub fn from_syn_ty(ty: &syn::Type) -> Sp<Self> {  in from_syn_ty()
23         let t = |kind| Sp::new(kind, ty.span());  in from_syn_ty()
25         if is_simple_ty(ty, "bool") {  in from_syn_ty()
27         } else if is_generic_ty(ty, "Vec") {  in from_syn_ty()
29         } else if let Some(subty) = subty_if_name(ty, "Option") {  in from_syn_ty()
43 pub fn sub_type(ty: &syn::Type) -> Option<&syn::Type> {  in sub_type()
44     subty_if(ty, |_| true)  in sub_type()
47 fn only_last_segment(ty: &syn::Type) -> Option<&PathSegment> {  in only_last_segment()
48     match ty {  in only_last_segment()
62 fn subty_if<F>(ty: &syn::Type, f: F) -> Option<&syn::Type>  in subty_if()
66     let ty = strip_group(ty);  in subty_if()  localVariable
68     only_last_segment(ty)  in subty_if()
73                     if let GenericArgument::Type(ty) = genneric {  in subty_if()
74                         Some(ty)  in subty_if()
85 pub fn subty_if_name<'a>(ty: &'a syn::Type, name: &str) -> Option<&'a syn::Type> {  in subty_if_name()
86     subty_if(ty, |seg| seg.ident == name)  in subty_if_name()
89 pub fn is_simple_ty(ty: &syn::Type, name: &str) -> bool {  in is_simple_ty()
90     let ty = strip_group(ty);  in is_simple_ty()  localVariable
92     only_last_segment(ty)  in is_simple_ty()
112 fn strip_group(mut ty: &syn::Type) -> &syn::Type {  in strip_group()
113     while let Type::Group(group) = ty {  in strip_group()
114         ty = &*group.elem;  in strip_group()
117     ty  in strip_group()
120 fn is_generic_ty(ty: &syn::Type, name: &str) -> bool {  in is_generic_ty()
121     subty_if_name(ty, name).is_some()  in is_generic_ty()