gecko-dev/dom/base/BorrowedAttrInfo.h

47 lines
1.2 KiB
C
Raw Normal View History

/* -*- 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