educe/trait_handlers/deref_mut/
panic.rs

1use proc_macro2::Span;
2use syn::Variant;
3
4#[inline]
5pub(crate) fn multiple_deref_mut_fields(span: Span) -> syn::Error {
6    syn::Error::new(span, "multiple fields are set for `DerefMut`")
7}
8
9#[inline]
10pub(crate) fn multiple_deref_mut_fields_of_variant(span: Span, variant: &Variant) -> syn::Error {
11    syn::Error::new(
12        span,
13        format!("multiple fields of the `{}` variant are set for `DerefMut`", variant.ident),
14    )
15}
16
17#[inline]
18pub(crate) fn no_deref_mut_field(span: Span) -> syn::Error {
19    syn::Error::new(span, "there is no field which is assigned for `DerefMut`")
20}
21
22#[inline]
23pub(crate) fn no_deref_mut_field_of_variant(span: Span, variant: &Variant) -> syn::Error {
24    syn::Error::new(
25        span,
26        format!(
27            "there is no field for the `{}` variant which is assigned for `DerefMut`",
28            variant.ident
29        ),
30    )
31}