Add manual Default for Scope

Author: Sdoba16

src/ast.rs

@@ -521,7 +521,7 @@ impl TreeLike for ExprTree<'_> {
 /// 2. Resolving type aliases
 /// 3. Assigning types to each witness expression
 /// 4. Resolving calls to custom functions
-#[derive(Clone, Debug, Eq, PartialEq, Default)]
+#[derive(Clone, Debug, Eq, PartialEq)]
 struct Scope {
     resolutions: ProgramResolutions,
     paths: Arc<[SourceName]>,
@@ -536,6 +536,23 @@ struct Scope {
     call_tracker: CallTracker,
 }
 
+impl Default for Scope {
+    fn default() -> Self {
+        Self {
+            resolutions: Arc::from([]), 
+            paths: Arc::from([]),
+            file_id: 0,
+            variables: Vec::new(),
+            aliases: HashMap::new(),
+            parameters: HashMap::new(),
+            witnesses: HashMap::new(),
+            functions: HashMap::new(),
+            is_main: false,
+            call_tracker: CallTracker::default(),
+        }
+    }
+}
+
 impl Scope {
     pub fn new(resolutions: ProgramResolutions, paths: Arc<[SourceName]>) -> Self {
         Self {