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events-macros: Refactor expand_event

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This commit is contained in:
Jonas Platte 2021-08-17 12:39:16 +02:00
parent 15553e1da9
commit b84cc8d905
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GPG Key ID: 7D261D771D915378
1 changed files with 11 additions and 14 deletions
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25
crates/ruma-events-macros/src/event.rs
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@ -20,22 +20,19 @@ pub fn expand_event(input: DeriveInput) -> syn::Result<TokenStream> {
syn::Error::new_spanned(ident, "not a valid ruma event struct identifier")
})?;
let fields: Vec<_> = if let Data::Struct(DataStruct { fields, .. }) = input.data.clone() {
if let Fields::Named(FieldsNamed { named, .. }) = fields {
if !named.iter().any(|f| f.ident.as_ref().unwrap() == "content") {
return Err(syn::Error::new(
Span::call_site(),
"struct must contain a `content` field",
));
}
named.into_iter().collect()
} else {
return Err(syn::Error::new_spanned(
fields,
"the `Event` derive only supports named fields",
let fields: Vec<_> = if let Data::Struct(DataStruct {
fields: Fields::Named(FieldsNamed { named, .. }),
..
}) = &input.data
{
if !named.iter().any(|f| f.ident.as_ref().unwrap() == "content") {
return Err(syn::Error::new(
Span::call_site(),
"struct must contain a `content` field",
));
}
named.iter().cloned().collect()
} else {
return Err(syn::Error::new_spanned(
input.ident,