Merge pull request #66 from dewert99/method-lifetime-params

Method lifetime params

ambassador/src/register.rs

@@ -343,14 +343,18 @@ fn build_method_invocation(
         })
         .collect();
 
-    let generics = method_sig.generics.split_for_impl().1;
-    let turbofish = generics.as_turbofish();
+    let generics = method_sig.generics.params.iter().filter_map(|x| match x {
+        GenericParam::Type(t) => Some(&t.ident),
+        GenericParam::Lifetime(_) => None,
+        GenericParam::Const(c) => Some(&c.ident),
+    });
     let post = if original_method.sig.asyncness.is_some() {
         quote!(.await)
     } else {
         quote!()
     };
 
-    let method_invocation = quote! { #field_ident.#method_ident #turbofish(#argument_list) #post };
+    let method_invocation =
+        quote! { #field_ident.#method_ident::<#(#generics,)*>(#argument_list) #post };
     method_invocation
 }

ambassador/tests/run-pass/late_bound_lifetime.rs

@@ -0,0 +1,22 @@
+#![deny(late_bound_lifetime_arguments)]
+extern crate ambassador;
+
+use ambassador::{delegatable_trait, Delegate};
+
+#[delegatable_trait]
+pub trait Shout {
+    fn shout<'a>(&'a self) {
+        println!("SHOUT!")
+    }
+}
+
+pub struct A;
+impl Shout for A {}
+
+#[derive(Delegate)]
+#[delegate(Shout, target = "0")]
+pub struct B(A);
+
+fn main() {
+    B(A).shout()
+}