1 files changed, 70 insertions, 0 deletions
diff --git a/storage/mozStorageStatementJSHelper.h b/storage/mozStorageStatementJSHelper.h
new file mode 100644
index 000000000..c7948bfa8
--- /dev/null
+++ b/storage/mozStorageStatementJSHelper.h
@@ -0,0 +1,70 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ * vim: sw=2 ts=2 et lcs=trail\:.,tab\:>~ :
+ * 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/. */
+
+#ifndef MOZSTORAGESTATEMENTJSHELPER_H
+#define MOZSTORAGESTATEMENTJSHELPER_H
+
+#include "nsIXPCScriptable.h"
+#include "nsIXPConnect.h"
+
+class Statement;
+
+namespace mozilla {
+namespace storage {
+
+class StatementJSHelper : public nsIXPCScriptable
+{
+public:
+  NS_DECL_ISUPPORTS
+  NS_DECL_NSIXPCSCRIPTABLE
+
+private:
+  nsresult getRow(Statement *, JSContext *, JSObject *, JS::Value *);
+  nsresult getParams(Statement *, JSContext *, JSObject *, JS::Value *);
+};
+
+/**
+ * Wrappers used to clean up the references JS helpers hold to the statement.
+ * For cycle-avoidance reasons they do not hold reference-counted references,
+ * so it is important we do this.
+ */
+class StatementJSObjectHolder : public nsIXPConnectJSObjectHolder
+{
+public:
+  NS_DECL_ISUPPORTS
+  NS_DECL_NSIXPCONNECTJSOBJECTHOLDER
+
+  explicit StatementJSObjectHolder(nsIXPConnectJSObjectHolder* aHolder);
+
+protected:
+  virtual ~StatementJSObjectHolder() {};
+  nsCOMPtr<nsIXPConnectJSObjectHolder> mHolder;
+};
+
+class StatementParamsHolder final: public StatementJSObjectHolder {
+public:
+  explicit StatementParamsHolder(nsIXPConnectJSObjectHolder* aHolder)
+    : StatementJSObjectHolder(aHolder) {
+  }
+
+private:
+  virtual ~StatementParamsHolder();
+};
+
+class StatementRowHolder final: public StatementJSObjectHolder {
+public:
+  explicit StatementRowHolder(nsIXPConnectJSObjectHolder* aHolder)
+    : StatementJSObjectHolder(aHolder) {
+  }
+
+private:
+  virtual ~StatementRowHolder();
+};
+
+} // namespace storage
+} // namespace mozilla
+
+#endif // MOZSTORAGESTATEMENTJSHELPER_H