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Diffstat (limited to '')
-rw-r--r-- | dom/ipc/IdType.h | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/dom/ipc/IdType.h b/dom/ipc/IdType.h new file mode 100644 index 0000000000..ccf8b52693 --- /dev/null +++ b/dom/ipc/IdType.h @@ -0,0 +1,64 @@ +/* -*- 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_IdType_h +#define mozilla_dom_IdType_h + +#include "ipc/IPCMessageUtils.h" + +namespace IPC { +template <typename T> +struct ParamTraits; +} // namespace IPC + +namespace mozilla::dom { +class BrowsingContext; +class ContentParent; +class BrowserParent; + +template <typename T> +class IdType { + friend struct IPC::ParamTraits<IdType<T>>; + + public: + IdType() : mId(0) {} + explicit IdType(uint64_t aId) : mId(aId) {} + + operator uint64_t() const { return mId; } + + IdType& operator=(uint64_t aId) { + mId = aId; + return *this; + } + + bool operator<(const IdType& rhs) { return mId < rhs.mId; } + + private: + uint64_t mId; +}; + +using TabId = IdType<BrowserParent>; +using ContentParentId = IdType<ContentParent>; +} // namespace mozilla::dom + +namespace IPC { + +template <typename T> +struct ParamTraits<mozilla::dom::IdType<T>> { + using paramType = mozilla::dom::IdType<T>; + + static void Write(MessageWriter* aWriter, const paramType& aParam) { + WriteParam(aWriter, aParam.mId); + } + + static bool Read(MessageReader* aReader, paramType* aResult) { + return ReadParam(aReader, &aResult->mId); + } +}; + +} // namespace IPC + +#endif // mozilla_dom_IdType_h |