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Preserve docs on aliases #332

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Merged
merged 1 commit into from
Oct 3, 2020
Merged

Preserve docs on aliases #332

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2 changes: 2 additions & 0 deletions macro/src/expand.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -657,9 +657,11 @@ fn expand_rust_function_shim_impl(
}

fn expand_type_alias(alias: &TypeAlias) -> TokenStream {
let doc = &alias.doc;
let ident = &alias.ident;
let ty = &alias.ty;
quote! {
#doc
pub type #ident = #ty;
}
}
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1 change: 1 addition & 0 deletions syntax/mod.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -79,6 +79,7 @@ pub struct ExternFn {
}

pub struct TypeAlias {
pub doc: Doc,
pub type_token: Token![type],
pub ident: Ident,
pub eq_token: Token![=],
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3 changes: 2 additions & 1 deletion syntax/parse.rs
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Expand Up @@ -396,9 +396,10 @@ fn parse_extern_verbatim(cx: &mut Errors, tokens: &TokenStream, lang: Lang) -> R
let eq_token: Token![=] = input.parse()?;
let ty: RustType = input.parse()?;
let semi_token: Token![;] = input.parse()?;
attrs::parse_doc(cx, &attrs);
let doc = attrs::parse_doc(cx, &attrs);

Ok(TypeAlias {
doc,
type_token,
ident,
eq_token,
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