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Extract duplicated code into a function

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Mingun
2020-10-12 00:23:45 +05:00
committed by Mingun
parent 1d11f03449
commit ab6588ef74
1 changed files with 22 additions and 29 deletions
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serde_derive/src/de.rs
+22 -29
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@@ -3084,23 +3084,29 @@ struct DeTypeGenerics<'a>(&'a Parameters);
#[cfg(feature = "deserialize_in_place")] #[cfg(feature = "deserialize_in_place")]
struct InPlaceTypeGenerics<'a>(&'a Parameters); struct InPlaceTypeGenerics<'a>(&'a Parameters);
/// If `'de` lifetime is defined, prepends it to list of generics
/// and then produces tokens for declaration generics on type
fn to_tokens(mut generics: syn::Generics, borrowed: &BorrowedLifetimes, tokens: &mut TokenStream) {
if borrowed.de_lifetime_param().is_some() {
let def = syn::LifetimeParam {
attrs: Vec::new(),
lifetime: syn::Lifetime::new("'de", Span::call_site()),
colon_token: None,
bounds: Punctuated::new(),
};
// Prepend 'de lifetime to list of generics
generics.params = Some(syn::GenericParam::Lifetime(def))
.into_iter()
.chain(generics.params)
.collect();
}
let (_, ty_generics, _) = generics.split_for_impl();
ty_generics.to_tokens(tokens);
}
impl<'a> ToTokens for DeTypeGenerics<'a> { impl<'a> ToTokens for DeTypeGenerics<'a> {
fn to_tokens(&self, tokens: &mut TokenStream) { fn to_tokens(&self, tokens: &mut TokenStream) {
let mut generics = self.0.generics.clone(); to_tokens(self.0.generics.clone(), &self.0.borrowed, tokens);
if self.0.borrowed.de_lifetime_param().is_some() {
let def = syn::LifetimeParam {
attrs: Vec::new(),
lifetime: syn::Lifetime::new("'de", Span::call_site()),
colon_token: None,
bounds: Punctuated::new(),
};
generics.params = Some(syn::GenericParam::Lifetime(def))
.into_iter()
.chain(generics.params)
.collect();
}
let (_, ty_generics, _) = generics.split_for_impl();
ty_generics.to_tokens(tokens);
} }
} }
@@ -3113,20 +3119,7 @@ impl<'a> ToTokens for InPlaceTypeGenerics<'a> {
.chain(generics.params) .chain(generics.params)
.collect(); .collect();
if self.0.borrowed.de_lifetime_param().is_some() { to_tokens(generics, &self.0.borrowed, tokens);
let def = syn::LifetimeParam {
attrs: Vec::new(),
lifetime: syn::Lifetime::new("'de", Span::call_site()),
colon_token: None,
bounds: Punctuated::new(),
};
generics.params = Some(syn::GenericParam::Lifetime(def))
.into_iter()
.chain(generics.params)
.collect();
}
let (_, ty_generics, _) = generics.split_for_impl();
ty_generics.to_tokens(tokens);
} }
} }