make convert_type skip non-type generics

1 files changed, 9 insertions, 0 deletions

diff --git a/src/syn_utils.rs b/src/syn_utils.rs
index ea4b5ea..00efee0 100644
--- a/src/syn_utils.rs
+++ b/src/syn_utils.rs
@@ -23,6 +23,15 @@ pub fn lifetime_bounds<T>(
     })
 }
 
+pub fn type_arguments_mut<P>(
+    args: &mut Punctuated<GenericArgument, P>,
+) -> impl Iterator<Item = &mut Type> {
+    args.iter_mut().filter_map(|a| match a {
+        GenericArgument::Type(t) => Some(t),
+        _other => None,
+    })
+}
+
 pub enum TypeOrPath<'a> {
     Type(&'a Type),
     Path(&'a Path),