Mirrors/servo
1
0
Fork 0
mirror of https://github.com/servo/servo.git synced 2025-08-03 20:50:07 +01:00
Code Issues Projects Releases Packages Wiki Activity

Format jstraceable_derive #21373

Browse source
This commit is contained in:
kingdido999 2018-09-10 11:03:38 +08:00
parent 6cb39fad47
commit 1cd092db63
1 changed files with 8 additions and 6 deletions
Download patch file Download diff file Expand all files Collapse all files

14
components/jstraceable_derive/lib.rs
View file

@ -3,15 +3,15 @@
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
extern crate quote; extern crate quote;
#[macro_use] extern crate syn; #[macro_use]
#[macro_use] extern crate synstructure; extern crate syn;
#[macro_use]
extern crate synstructure;
decl_derive!([JSTraceable] => js_traceable_derive); decl_derive!([JSTraceable] => js_traceable_derive);
fn js_traceable_derive(s: synstructure::Structure) -> quote::Tokens { fn js_traceable_derive(s: synstructure::Structure) -> quote::Tokens {
let match_body = s.each(|binding| { let match_body = s.each(|binding| Some(quote!(#binding.trace(tracer);)));
Some(quote!(#binding.trace(tracer);))
});
let ast = s.ast(); let ast = s.ast();
let name = ast.ident; let name = ast.ident;
@ -19,7 +19,9 @@ fn js_traceable_derive(s: synstructure::Structure) -> quote::Tokens {
let mut where_clause = where_clause.unwrap_or(&parse_quote!(where)).clone(); let mut where_clause = where_clause.unwrap_or(&parse_quote!(where)).clone();
for param in ast.generics.type_params() { for param in ast.generics.type_params() {
let ident = param.ident; let ident = param.ident;
where_clause.predicates.push(parse_quote!(#ident: ::dom::bindings::trace::JSTraceable)) where_clause
.predicates
.push(parse_quote!(#ident: ::dom::bindings::trace::JSTraceable))
} }
let tokens = quote! { let tokens = quote! {