1 files changed, 27 insertions, 0 deletions
diff --git a/editors/vscode/client/codeactions.js b/editors/vscode/client/codeactions.js
new file mode 100644
index 0000000..dd79b3f
--- /dev/null
+++ b/editors/vscode/client/codeactions.js
@@ -0,0 +1,27 @@
+// convert protocol edits into editor actions while rejecting stale versions.
+function convertCodeActions(vscode, results, document, expectedVersion = document.version) {
+    return (Array.isArray(results) ? results : []).flatMap(result => {
+        if (!result.edit) return [];
+        const changes = result.edit.documentChanges || Object.entries(result.edit.changes || {}).map(([uri, edits]) => ({ textDocument: { uri }, edits }));
+        if (changes.some(change => change.textDocument?.uri === document.uri.toString() && change.textDocument.version != null && change.textDocument.version !== expectedVersion)) return [];
+        const edit = new vscode.WorkspaceEdit();
+        let count = 0;
+        for (const change of changes) {
+            if (!change.textDocument || !Array.isArray(change.edits)) continue;
+            const uri = vscode.Uri.parse(change.textDocument.uri);
+            for (const replacement of change.edits) {
+                const range = replacement.range;
+                if (!range || typeof replacement.newText !== 'string') continue;
+                edit.replace(uri, new vscode.Range(range.start.line, range.start.character, range.end.line, range.end.character), replacement.newText);
+                count++;
+            }
+        }
+        if (!count) return [];
+        const action = new vscode.CodeAction(result.title, vscode.CodeActionKind.QuickFix);
+        action.edit = edit;
+        action.isPreferred = !!result.isPreferred;
+        return [action];
+    });
+}
+
+module.exports = { convertCodeActions };