1 files changed, 19 insertions, 0 deletions
diff --git a/src/from_generic_param.rs b/src/from_generic_param.rs
new file mode 100644
index 0000000..757ad76
--- /dev/null
+++ b/src/from_generic_param.rs
@@ -0,0 +1,19 @@
+use crate::Result;
+
+/// Creates an instance by parsing a specific `syn::GenericParam`.
+/// This can be a type param, a lifetime, or a const param.
+pub trait FromGenericParam: Sized {
+    fn from_generic_param(param: &syn::GenericParam) -> Result<Self>;
+}
+
+impl FromGenericParam for () {
+    fn from_generic_param(_param: &syn::GenericParam) -> Result<Self> {
+        Ok(())
+    }
+}
+
+impl FromGenericParam for syn::GenericParam {
+    fn from_generic_param(param: &syn::GenericParam) -> Result<Self> {
+        Ok(param.clone())
+    }
+}