summaryrefslogtreecommitdiffstats
path: root/dom/base/BorrowedAttrInfo.h
diff options
context:
space:
mode:
Diffstat (limited to 'dom/base/BorrowedAttrInfo.h')
-rw-r--r--dom/base/BorrowedAttrInfo.h46
1 files changed, 46 insertions, 0 deletions
diff --git a/dom/base/BorrowedAttrInfo.h b/dom/base/BorrowedAttrInfo.h
new file mode 100644
index 000000000..8efb02d25
--- /dev/null
+++ b/dom/base/BorrowedAttrInfo.h
@@ -0,0 +1,46 @@
+/* -*- 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 BorrowedAttrInfo_h__
+#define BorrowedAttrInfo_h__
+
+#include "mozilla/Assertions.h"
+
+class nsAttrName;
+class nsAttrValue;
+
+namespace mozilla {
+namespace dom {
+
+/**
+ * Struct that stores info on an attribute. The name and value must either both
+ * be null or both be non-null.
+ *
+ * Note that, just as the pointers returned by GetAttrNameAt, the pointers that
+ * this struct hold are only valid until the element or its attributes are
+ * mutated (directly or via script).
+ */
+struct BorrowedAttrInfo
+{
+ BorrowedAttrInfo()
+ : mName(nullptr)
+ , mValue(nullptr)
+ {
+ }
+
+ BorrowedAttrInfo(const nsAttrName* aName, const nsAttrValue* aValue);
+
+ BorrowedAttrInfo(const BorrowedAttrInfo& aOther);
+
+ const nsAttrName* mName;
+ const nsAttrValue* mValue;
+
+ explicit operator bool() const { return mName != nullptr; }
+};
+
+} // namespace dom
+} // namespace mozilla
+#endif