1 files changed, 32 insertions, 0 deletions
diff --git a/devtools/client/debugger/src/selectors/ast.js b/devtools/client/debugger/src/selectors/ast.js
new file mode 100644
index 0000000000..f3384fdc58
--- /dev/null
+++ b/devtools/client/debugger/src/selectors/ast.js
@@ -0,0 +1,32 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at <http://mozilla.org/MPL/2.0/>. */
+
+import { makeBreakpointId } from "../utils/breakpoint";
+
+export function getSymbols(state, location) {
+  if (!location) {
+    return null;
+  }
+  if (location.source.isOriginal) {
+    return (
+      state.ast.mutableOriginalSourcesSymbols[location.source.id]?.value || null
+    );
+  }
+  if (!location.sourceActor) {
+    throw new Error(
+      "Expects a location with a source actor when passing non-original sources to getSymbols"
+    );
+  }
+  return (
+    state.ast.mutableSourceActorSymbols[location.sourceActor.id]?.value || null
+  );
+}
+
+export function getInScopeLines(state, location) {
+  return state.ast.mutableInScopeLines[makeBreakpointId(location)]?.lines;
+}
+
+export function hasInScopeLines(state, location) {
+  return !!getInScopeLines(state, location);
+}