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Use Generics::make_where_clause helper

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This commit is contained in:
David Tolnay 2018-04-01 16:58:14 +02:00
parent 860241aa88
commit f8e1fa8ebc
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GPG Key ID: F9BA143B95FF6D82
1 changed files with 4 additions and 36 deletions
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40
serde_derive/src/bound.rs
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@ -44,15 +44,7 @@ pub fn with_where_predicates(
predicates: &[syn::WherePredicate], predicates: &[syn::WherePredicate],
) -> syn::Generics { ) -> syn::Generics {
let mut generics = generics.clone(); let mut generics = generics.clone();
if generics.where_clause.is_none() { generics.make_where_clause()
generics.where_clause = Some(syn::WhereClause {
where_token: Default::default(),
predicates: Punctuated::new(),
});
}
generics.where_clause
.as_mut()
.unwrap()
.predicates .predicates
.extend(predicates.into_iter().cloned()); .extend(predicates.into_iter().cloned());
generics generics
@ -72,15 +64,7 @@ where
.flat_map(|predicates| predicates.to_vec()); .flat_map(|predicates| predicates.to_vec());
let mut generics = generics.clone(); let mut generics = generics.clone();
if generics.where_clause.is_none() { generics.make_where_clause()
generics.where_clause = Some(syn::WhereClause {
where_token: Default::default(),
predicates: Punctuated::new(),
});
}
generics.where_clause
.as_mut()
.unwrap()
.predicates .predicates
.extend(predicates); .extend(predicates);
generics generics
@ -202,15 +186,7 @@ where
}); });
let mut generics = generics.clone(); let mut generics = generics.clone();
if generics.where_clause.is_none() { generics.make_where_clause()
generics.where_clause = Some(syn::WhereClause {
where_token: Default::default(),
predicates: Punctuated::new(),
});
}
generics.where_clause
.as_mut()
.unwrap()
.predicates .predicates
.extend(new_predicates); .extend(new_predicates);
generics generics
@ -222,15 +198,7 @@ pub fn with_self_bound(
bound: &syn::Path, bound: &syn::Path,
) -> syn::Generics { ) -> syn::Generics {
let mut generics = generics.clone(); let mut generics = generics.clone();
if generics.where_clause.is_none() { generics.make_where_clause()
generics.where_clause = Some(syn::WhereClause {
where_token: Default::default(),
predicates: Punctuated::new(),
});
}
generics.where_clause
.as_mut()
.unwrap()
.predicates .predicates
.push(syn::WherePredicate::Type(syn::PredicateType { .push(syn::WherePredicate::Type(syn::PredicateType {
lifetimes: None, lifetimes: None,