1 use syn::{GenericArgument, Lifetime, PathArguments, Type};
2
populate_static_lifetimes(ty: &mut Type)3 pub(crate) fn populate_static_lifetimes(ty: &mut Type) {
4 match ty {
5 #![cfg_attr(all(test, exhaustive), deny(non_exhaustive_omitted_patterns))]
6 Type::Array(ty) => populate_static_lifetimes(&mut ty.elem),
7 Type::Group(ty) => populate_static_lifetimes(&mut ty.elem),
8 Type::Paren(ty) => populate_static_lifetimes(&mut ty.elem),
9 Type::Path(ty) => {
10 if let Some(qself) = &mut ty.qself {
11 populate_static_lifetimes(&mut qself.ty);
12 }
13 for segment in &mut ty.path.segments {
14 if let PathArguments::AngleBracketed(segment) = &mut segment.arguments {
15 for arg in &mut segment.args {
16 if let GenericArgument::Type(arg) = arg {
17 populate_static_lifetimes(arg);
18 }
19 }
20 }
21 }
22 }
23 Type::Ptr(ty) => populate_static_lifetimes(&mut ty.elem),
24 Type::Reference(ty) => {
25 if ty.lifetime.is_none() {
26 ty.lifetime = Some(Lifetime::new("'static", ty.and_token.span));
27 }
28 populate_static_lifetimes(&mut ty.elem);
29 }
30 Type::Slice(ty) => populate_static_lifetimes(&mut ty.elem),
31 Type::Tuple(ty) => ty.elems.iter_mut().for_each(populate_static_lifetimes),
32 Type::ImplTrait(_)
33 | Type::Infer(_)
34 | Type::Macro(_)
35 | Type::Never(_)
36 | Type::TraitObject(_)
37 | Type::BareFn(_)
38 | Type::Verbatim(_) => {}
39
40 _ => unimplemented!("unknown Type"),
41 }
42 }
43