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Improve handling of trait bounds when deriving fmap-like traits

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This commit is contained in:
Anthony Ramine 2017-08-26 12:40:28 +02:00
parent 8101887d31
commit efc852f6e3
12 changed files with 229 additions and 136 deletions
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2
components/style_derive/compute_squared_distance.rs
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@ -30,7 +30,7 @@ pub fn derive(input: syn::DeriveInput) -> quote::Tokens {
} else {
let mut sum = quote!();
sum.append_separated(this_info.iter().zip(&other_info).map(|(this, other)| {
where_clause.add_trait_bound(this.field.ty.clone());
where_clause.add_trait_bound(&this.field.ty);
quote! {
::values::distance::ComputeSquaredDistance::compute_squared_distance(#this, #other)?
}