blob: 11aebc8354806a93f83e033796bb851922a242fd (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
|
pub use self::case_style::CaseStyleHelpers;
pub use self::type_props::HasTypeProperties;
pub use self::variant_props::HasStrumVariantProperties;
pub mod case_style;
mod metadata;
pub mod type_props;
pub mod variant_props;
use proc_macro2::Span;
use quote::ToTokens;
use syn::spanned::Spanned;
pub fn non_enum_error() -> syn::Error {
syn::Error::new(Span::call_site(), "This macro only supports enums.")
}
pub fn strum_discriminants_passthrough_error(span: &impl Spanned) -> syn::Error {
syn::Error::new(
span.span(),
"expected a pass-through attribute, e.g. #[strum_discriminants(serde(rename = \"var0\"))]",
)
}
pub fn occurrence_error<T: ToTokens>(fst: T, snd: T, attr: &str) -> syn::Error {
let mut e = syn::Error::new_spanned(
snd,
format!("Found multiple occurrences of strum({})", attr),
);
e.combine(syn::Error::new_spanned(fst, "first one here"));
e
}
|
