Bug 1651016 - Introduce CACHE_TRY and CACHE_TRY_VAR macros; r=ttung

Differential Revision: https://phabricator.services.mozilla.com/D84316

dom/cache/CacheCommon.cpp

@@ -0,0 +1,24 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* 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/. */
+
+#include "CacheCommon.h"
+
+#include "nsPrintfCString.h"
+#include "nsXPCOM.h"
+
+namespace mozilla::dom::cache {
+
+void HandleError(const nsLiteralCString& aExpr,
+                 const nsLiteralCString& aSourceFile, int32_t aSourceLine) {
+#ifdef DEBUG
+  NS_DebugBreak(NS_DEBUG_WARNING, "Error", aExpr.get(), aSourceFile.get(),
+                aSourceLine);
+#endif
+
+  // TODO: Report to browser console
+}
+
+}  // namespace mozilla::dom::cache

dom/cache/CacheCommon.h

@@ -0,0 +1,25 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* 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 mozilla_dom_cache_CacheCommon_h
+#define mozilla_dom_cache_CacheCommon_h
+
+#include "mozilla/dom/quota/QuotaCommon.h"
+
+// Cache equivalent of QM_TRY.
+#define CACHE_TRY(...) QM_TRY_META(mozilla::dom::cache, ##__VA_ARGS__)
+
+// Cache equivalent of QM_TRY_VAR.
+#define CACHE_TRY_VAR(...) QM_TRY_VAR_META(mozilla::dom::cache, ##__VA_ARGS__)
+
+namespace mozilla::dom::cache {
+
+void HandleError(const nsLiteralCString& aExpr,
+                 const nsLiteralCString& aSourceFile, int32_t aSourceLine);
+
+}  // namespace mozilla::dom::cache
+
+#endif  // mozilla_dom_cache_CacheCommon_h

dom/cache/moz.build

@@ -48,6 +48,7 @@ UNIFIED_SOURCES += [
     'AutoUtils.cpp',
     'Cache.cpp',
     'CacheChild.cpp',
+    'CacheCommon.cpp',
     'CacheOpChild.cpp',
     'CacheOpParent.cpp',
     'CacheParent.cpp',