Adding upstream version 124.0.1.upstream/124.0.1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 21 insertions, 0 deletions

diff --git a/js/src/frontend/Parser-macros.h b/js/src/frontend/Parser-macros.h
new file mode 100644
index 0000000000..4e7f7dfb5f
--- /dev/null
+++ b/js/src/frontend/Parser-macros.h
@@ -0,0 +1,21 @@
+/* -*- 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 frontend_Parser_macros_h
+#define frontend_Parser_macros_h
+
+#include "mozilla/Likely.h"  // MOZ_UNLIKELY
+
+#define MOZ_TRY_VAR_OR_RETURN(target, expr, returnValue) \
+  do {                                                   \
+    auto parserTryVarTempResult_ = (expr);               \
+    if (MOZ_UNLIKELY(parserTryVarTempResult_.isErr())) { \
+      return (returnValue);                              \
+    }                                                    \
+    (target) = parserTryVarTempResult_.unwrap();         \
+  } while (0)
+
+#endif /* frontend_Parser_macros_h */