1 files changed, 32 insertions, 0 deletions
diff --git a/src/helpers/mod.rs b/src/helpers/mod.rs
new file mode 100644
index 0000000..142ea0b
--- /dev/null
+++ b/src/helpers/mod.rs
@@ -0,0 +1,32 @@
+pub use self::case_style::{CaseStyleHelpers, snakify};
+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
+}