Apply patch sets by value in preparation for AppliedPatchSet

src/commands/build.rs

@@ -105,7 +105,7 @@ pub fn build(options: &BuildOptions) -> Result<(), BuildError> {
     let patch_set = compute_patch_set(&snapshot, &tree, root_id);
 
     log::trace!("Applying patch set");
-    apply_patch_set(&mut tree, &patch_set);
+    apply_patch_set(&mut tree, patch_set);
 
     log::trace!("Opening output file for write");
     let mut file = BufWriter::new(File::create(&options.output_file)?);

src/commands/serve.rs

@@ -68,7 +68,7 @@ pub fn serve(options: &ServeOptions) -> Result<(), ServeError> {
         .expect("snapshot did not return an instance");
 
     let patch_set = compute_patch_set(&snapshot, &tree, root_id);
-    apply_patch_set(&mut tree, &patch_set);
+    apply_patch_set(&mut tree, patch_set);
 
     let session = Arc::new(ServeSession::new(imfs, tree, maybe_project));
     let server = LiveServer::new(session);

src/commands/upload.rs

@@ -72,7 +72,7 @@ pub fn upload(options: UploadOptions) -> Result<(), UploadError> {
     let patch_set = compute_patch_set(&snapshot, &tree, root_id);
 
     log::trace!("Applying patch set");
-    apply_patch_set(&mut tree, &patch_set);
+    apply_patch_set(&mut tree, patch_set);
 
     let root_id = tree.get_root_id();
 

src/snapshot/patch_apply.rs

@@ -9,18 +9,18 @@ use super::{
     InstancePropertiesWithMeta, InstanceSnapshot, RojoTree,
 };
 
-pub fn apply_patch_set(tree: &mut RojoTree, patch_set: &PatchSet) {
+pub fn apply_patch_set(tree: &mut RojoTree, patch_set: PatchSet) {
     let mut context = PatchApplyContext::default();
 
-    for removed_id in &patch_set.removed_instances {
-        tree.remove_instance(*removed_id);
+    for removed_id in patch_set.removed_instances {
+        tree.remove_instance(removed_id);
     }
 
-    for add_patch in &patch_set.added_instances {
+    for add_patch in patch_set.added_instances {
         apply_add_child(&mut context, tree, add_patch.parent_id, &add_patch.instance);
     }
 
-    for update_patch in &patch_set.updated_instances {
+    for update_patch in patch_set.updated_instances {
         apply_update_child(&context, tree, update_patch);
     }
 
@@ -95,43 +95,47 @@ fn apply_add_child(
     }
 }
 
-fn apply_update_child(context: &PatchApplyContext, tree: &mut RojoTree, patch: &PatchUpdate) {
-    if let Some(metadata) = &patch.changed_metadata {
-        tree.update_metadata(patch.id, metadata.clone());
+fn apply_update_child(context: &PatchApplyContext, tree: &mut RojoTree, patch: PatchUpdate) {
+    if let Some(metadata) = patch.changed_metadata {
+        tree.update_metadata(patch.id, metadata);
     }
 
     let mut instance = tree
         .get_instance_mut(patch.id)
         .expect("Instance referred to by patch does not exist");
 
-    if let Some(name) = &patch.changed_name {
-        *instance.name_mut() = name.clone();
+    if let Some(name) = patch.changed_name {
+        *instance.name_mut() = name;
     }
 
-    if let Some(class_name) = &patch.changed_class_name {
-        *instance.class_name_mut() = class_name.clone();
+    if let Some(class_name) = patch.changed_class_name {
+        *instance.class_name_mut() = class_name;
     }
 
-    for (key, property_entry) in &patch.changed_properties {
+    for (key, property_entry) in patch.changed_properties {
         match property_entry {
             // Ref values need to be potentially rewritten from snapshot IDs to
             // instance IDs if they referred to an instance that was created as
             // part of this patch.
             Some(RbxValue::Ref { value: Some(id) }) => {
-                let new_id = context.snapshot_id_to_instance_id.get(id).unwrap_or(id);
+                let new_id = context
+                    .snapshot_id_to_instance_id
+                    .get(&id)
+                    .copied()
+                    .unwrap_or(id);
 
                 instance.properties_mut().insert(
-                    key.clone(),
+                    key,
                     RbxValue::Ref {
-                        value: Some(*new_id),
+                        value: Some(new_id),
                     },
                 );
             }
             Some(value) => {
-                instance.properties_mut().insert(key.clone(), value.clone());
+                instance.properties_mut().insert(key, value);
             }
             None => {
-                instance.properties_mut().remove(key);
+                instance.properties_mut().remove(&key);
             }
         }
     }
@@ -182,7 +186,7 @@ mod test {
             ..Default::default()
         };
 
-        apply_patch_set(&mut tree, &patch_set);
+        apply_patch_set(&mut tree, patch_set);
 
         let root_instance = tree.get_instance(root_id).unwrap();
         let child_id = root_instance.children()[0];
@@ -235,7 +239,7 @@ mod test {
             ..Default::default()
         };
 
-        apply_patch_set(&mut tree, &patch_set);
+        apply_patch_set(&mut tree, patch_set);
 
         let expected_properties = hashmap! {
             "Foo".to_owned() => RbxValue::Int32 { value: 8 },