1 files changed, 55 insertions, 0 deletions
diff --git a/devtools/client/debugger/src/utils/location.js b/devtools/client/debugger/src/utils/location.js
new file mode 100644
index 0000000000..bcc1b7acb2
--- /dev/null
+++ b/devtools/client/debugger/src/utils/location.js
@@ -0,0 +1,55 @@
+/* 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/>. */
+
+// @flow
+import { sortBy } from "lodash";
+import { getSelectedLocation } from "./selected-location";
+
+import type {
+  MappedLocation,
+  PartialPosition,
+  SourceLocation,
+  SourceId,
+  Source,
+} from "../types";
+
+type IncompleteLocation = {
+  sourceId: SourceId,
+  line?: number,
+  column?: number,
+  sourceUrl?: string,
+};
+
+export function comparePosition(a: ?PartialPosition, b: ?PartialPosition) {
+  return a && b && a.line == b.line && a.column == b.column;
+}
+
+export function createLocation({
+  sourceId,
+  // Line 0 represents no specific line chosen for action
+  line = 0,
+  column,
+  sourceUrl = "",
+}: IncompleteLocation): SourceLocation {
+  return {
+    sourceId,
+    line,
+    column,
+    sourceUrl,
+  };
+}
+
+export function sortSelectedLocations<T: MappedLocation>(
+  locations: $ReadOnlyArray<T>,
+  selectedSource: ?Source
+): Array<T> {
+  return sortBy(locations, [
+    // Priority: line number, undefined column, column number
+    location => getSelectedLocation(location, selectedSource).line,
+    location => {
+      const selectedLocation = getSelectedLocation(location, selectedSource);
+      return selectedLocation.column === undefined || selectedLocation.column;
+    },
+  ]);
+}