Function pascal_case_segments 

pub fn pascal_case_segments<S: ToTokens + ?Sized>(
    name: &Ident,
    span: &S,
    what: &str,
    min_segments: usize,
) -> Result<Vec<String>>

The pascal-case segments of the struct name name, which must have at least min_segments; errors are reported at span, calling the struct what (e.g. “struct”, “merge patch model”).

Errors

Returns an error when name is not pascal cased, or has too few segments.

Examples

let name: syn::Ident = syn::parse_quote!(OrderModel);

assert_eq!(
    pascal_case_segments(&name, &name, "struct", 2).unwrap(),
    vec!["Order", "Model"]
);
assert!(pascal_case_segments(&name, &name, "struct", 3).is_err());