Adding upstream version 86.0.1.upstream/86.0.1upstream

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

1 files changed, 43 insertions, 0 deletions

diff --git a/js/src/builtin/intl/ScopedICUObject.h b/js/src/builtin/intl/ScopedICUObject.h
new file mode 100644
index 0000000000..557a7e4bd6
--- /dev/null
+++ b/js/src/builtin/intl/ScopedICUObject.h
@@ -0,0 +1,43 @@
+/* -*- 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 builtin_intl_ScopedICUObject_h
+#define builtin_intl_ScopedICUObject_h
+
+/*
+ * A simple RAII class to assure ICU objects are automatically deallocated at
+ * scope end.  Unfortunately, ICU's C++ API is uniformly unstable, so we can't
+ * use its smart pointers for this.
+ */
+
+namespace js {
+
+template <typename T, void(Delete)(T*)>
+class ScopedICUObject {
+  T* ptr_;
+
+ public:
+  explicit ScopedICUObject(T* ptr) : ptr_(ptr) {}
+
+  ~ScopedICUObject() {
+    if (ptr_) {
+      Delete(ptr_);
+    }
+  }
+
+  // In cases where an object should be deleted on abnormal exits,
+  // but returned to the caller if everything goes well, call forget()
+  // to transfer the object just before returning.
+  T* forget() {
+    T* tmp = ptr_;
+    ptr_ = nullptr;
+    return tmp;
+  }
+};
+
+}  // namespace js
+
+#endif /* builtin_intl_ScopedICUObject_h */