1 use rustc::hir::itemlikevisit::ItemLikeVisitor;
4 use rustc_target::spec::abi::Abi;
5 use syntax::symbol::sym;
7 crate fn collect(tcx: TyCtxt<'_>) -> Vec<String> {
8 let mut collector = Collector {
11 tcx.hir().krate().visit_all_item_likes(&mut collector);
13 for attr in tcx.hir().krate().attrs.iter() {
14 if attr.has_name(sym::link_args) {
15 if let Some(linkarg) = attr.value_str() {
16 collector.add_link_args(&linkarg.as_str());
21 return collector.args;
28 impl<'tcx> ItemLikeVisitor<'tcx> for Collector {
29 fn visit_item(&mut self, it: &'tcx hir::Item) {
30 let fm = match it.kind {
31 hir::ItemKind::ForeignMod(ref fm) => fm,
34 if fm.abi == Abi::Rust ||
35 fm.abi == Abi::RustIntrinsic ||
36 fm.abi == Abi::PlatformIntrinsic {
40 // First, add all of the custom #[link_args] attributes
41 for m in it.attrs.iter().filter(|a| a.check_name(sym::link_args)) {
42 if let Some(linkarg) = m.value_str() {
43 self.add_link_args(&linkarg.as_str());
48 fn visit_trait_item(&mut self, _it: &'tcx hir::TraitItem) {}
49 fn visit_impl_item(&mut self, _it: &'tcx hir::ImplItem) {}
53 fn add_link_args(&mut self, args: &str) {
54 self.args.extend(args.split(' ').filter(|s| !s.is_empty()).map(|s| s.to_string()))