From 5928f043b56bff29340364dabf4ec020e62666e6 Mon Sep 17 00:00:00 2001
From: Dunqing <29533304+Dunqing@users.noreply.github.com>
Date: Wed, 23 Oct 2024 15:36:30 +0000
Subject: [PATCH] feat(semantic): add `move_binding` API in ` ScopeTree`
 (#6808)

Part of #6658

This API is useful when we want to move a scope to another scope
---
 crates/oxc_semantic/src/scope.rs | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/crates/oxc_semantic/src/scope.rs b/crates/oxc_semantic/src/scope.rs
index b21edcde1662d..03103b2e57f83 100644
--- a/crates/oxc_semantic/src/scope.rs
+++ b/crates/oxc_semantic/src/scope.rs
@@ -328,6 +328,14 @@ impl ScopeTree {
         self.bindings[scope_id].shift_remove(name);
     }
 
+    /// Move a binding from one scope to another.
+    pub fn move_binding(&mut self, from: ScopeId, to: ScopeId, name: &str) {
+        let from_map = &mut self.bindings[from];
+        if let Some((name, symbol_id)) = from_map.swap_remove_entry(name) {
+            self.bindings[to].insert(name, symbol_id);
+        }
+    }
+
     /// Reserve memory for an `additional` number of scopes.
     pub fn reserve(&mut self, additional: usize) {
         self.parent_ids.reserve(additional);