1 files changed, 9 insertions, 9 deletions

diff --git a/src/makefile/macro.rs b/src/makefile/macro.rs
index b135f42..4a82fe9 100644
--- a/src/makefile/macro.rs
+++ b/src/makefile/macro.rs
@@ -11,6 +11,7 @@ use std::rc::Rc;
 use super::functions;
 use super::token::{Token, TokenString};
 use super::ItemSource;
+use super::LookupInternal;
 #[cfg(feature = "full")]
 use crate::makefile::eval_context::DeferredEvalContext;
 use eyre::{bail, Result, WrapErr};
@@ -25,10 +26,6 @@ pub struct Macro {
     pub eagerly_expanded: bool,
 }
 
-pub trait LookupInternal: for<'a> Fn(&'a str) -> Result<String> {}
-
-impl<F: for<'a> Fn(&'a str) -> Result<String>> LookupInternal for F {}
-
 #[cfg(feature = "full")]
 #[derive(Clone, Debug)]
 pub enum ExportConfig {
@@ -91,7 +88,7 @@ impl ExportConfig {
 pub struct Set<'parent, 'lookup> {
     parent: Option<&'parent Set<'parent, 'lookup>>,
     pub data: HashMap<String, Macro>,
-    lookup_internal: Option<&'lookup dyn LookupInternal>,
+    lookup_internal: Option<LookupInternal<'lookup>>,
     #[cfg(feature = "full")]
     pub exported: ExportConfig,
     warnings: Rc<RefCell<HashSet<String>>>,
@@ -140,8 +137,8 @@ impl<'parent, 'lookup> Set<'parent, 'lookup> {
     }
 
     fn lookup_internal(&self, name: &str) -> Result<String> {
-        if let Some(lookup) = self.lookup_internal {
-            lookup(name)
+        if let Some(lookup) = self.lookup_internal.as_ref() {
+            lookup.lookup(name)
         } else if let Some(parent) = self.parent {
             parent.lookup_internal(name)
         } else {
@@ -341,7 +338,7 @@ impl<'parent, 'lookup> Set<'parent, 'lookup> {
         }
     }
 
-    pub fn with_lookup<'l, 's: 'l>(&'s self, lookup: &'l dyn LookupInternal) -> Set<'s, 'l> {
+    pub fn with_lookup<'l, 's: 'l>(&'s self, lookup: LookupInternal<'l>) -> Set<'s, 'l> {
         Set {
             parent: Some(self),
             data: HashMap::new(),
@@ -392,7 +389,10 @@ impl fmt::Debug for Set<'_, '_> {
         let mut r#struct = f.debug_struct("Set");
         r#struct.field("parent", &self.parent);
         r#struct.field("data", &self.data);
-        r#struct.field("lookup_internal", &self.lookup_internal.map(|_| ()));
+        r#struct.field(
+            "lookup_internal",
+            &self.lookup_internal.as_ref().map(|_| ()),
+        );
         #[cfg(feature = "full")]
         r#struct.field("exported", &self.exported);
         r#struct.field("warnings", &self.warnings);