From 2d87ed9a4dc8554bff082c97335b2a48659c7381 Mon Sep 17 00:00:00 2001
From: Melody Horn <melody@boringcactus.com>
Date: Fri, 2 Apr 2021 22:40:27 -0600
Subject: simplify MakefileReader.targets

it doesn't need interior mutability so why put up with the cruft from that?
---
 src/makefile/input.rs | 28 ++++++++++++++--------------
 1 file changed, 14 insertions(+), 14 deletions(-)

diff --git a/src/makefile/input.rs b/src/makefile/input.rs
index fda81d0..e8a4a42 100644
--- a/src/makefile/input.rs
+++ b/src/makefile/input.rs
@@ -90,7 +90,7 @@ fn inference_match<'a>(
 pub struct MakefileReader<'a> {
     inference_rules: Vec<InferenceRule>,
     macros: MacroSet<'static, 'static>,
-    targets: RefCell<HashMap<String, Rc<RefCell<Target>>>>,
+    targets: HashMap<String, Target>,
     pub first_non_special_target: Option<String>,
     args: &'a Args,
     // TODO borrow warnings from Python version
@@ -106,11 +106,7 @@ impl<'a> MakefileReader<'a> {
         if !args.no_builtin_rules {
             inference_rules.extend(builtin_inference_rules());
             macros.add_builtins();
-            targets.extend(
-                builtin_targets()
-                    .into_iter()
-                    .map(|t| (t.name.clone(), Rc::new(RefCell::new(t)))),
-            );
+            targets.extend(builtin_targets().into_iter().map(|t| (t.name.clone(), t)));
         }
 
         macros.add_env();
@@ -128,7 +124,7 @@ impl<'a> MakefileReader<'a> {
         MakefileReader {
             inference_rules,
             macros,
-            targets: RefCell::new(targets),
+            targets,
             first_non_special_target,
             args,
         }
@@ -337,13 +333,11 @@ impl<'a> MakefileReader<'a> {
                 if self.first_non_special_target.is_none() && !target.starts_with('.') {
                     self.first_non_special_target = Some(target.into());
                 }
-                let mut targets = self.targets.borrow_mut();
-                match targets.get_mut(target) {
+                match self.targets.get_mut(target) {
                     Some(old_target)
                         if commands.is_empty()
                             && !(target == ".SUFIXES" && prerequisites.is_empty()) =>
                     {
-                        let mut old_target = old_target.borrow_mut();
                         let new_prerequisites = prerequisites
                             .iter()
                             .filter(|x| !old_target.prerequisites.contains(x))
@@ -358,7 +352,7 @@ impl<'a> MakefileReader<'a> {
                             commands: commands.clone(),
                             already_updated: Cell::new(false),
                         };
-                        targets.insert(target.into(), Rc::new(RefCell::new(new_target)));
+                        self.targets.insert(target.into(), new_target);
                     }
                 }
             }
@@ -461,7 +455,13 @@ impl<'a> From<MakefileReader<'a>> for super::Makefile<'a> {
         Self {
             inference_rules: reader.inference_rules,
             macros: reader.macros,
-            targets: reader.targets,
+            targets: RefCell::new(
+                reader
+                    .targets
+                    .into_iter()
+                    .map(|(k, v)| (k, Rc::new(RefCell::new(v))))
+                    .collect(),
+            ),
             first_non_special_target: reader.first_non_special_target,
             args: reader.args,
         }
@@ -556,7 +556,7 @@ mod test {
         MakefileReader {
             inference_rules: vec![],
             macros: MacroSet::new(),
-            targets: RefCell::new(HashMap::new()),
+            targets: HashMap::new(),
             first_non_special_target: None,
             args,
         }
@@ -642,7 +642,7 @@ clean:
         let args = Args::empty();
         let mut makefile = empty_makefile(&args);
         makefile.and_read(Cursor::new(file))?;
-        assert!(makefile.targets.borrow().contains_key("server"));
+        assert!(makefile.targets.contains_key("server"));
         Ok(())
     }
 }
-- 
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