mirror of
https://github.com/mozilla/gecko-dev.git
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05dc5e0d76
Automatically generated rewrites of all ParamTraits and IPDLParamTraits
implementations in-tree to use IPC::Message{Reader,Writer}.
Differential Revision: https://phabricator.services.mozilla.com/D140004
67 lines
2 KiB
C++
67 lines
2 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "IPCMessageUtilsSpecializations.h"
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#include "nsGkAtoms.h"
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namespace IPC {
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static const uint16_t kDynamicAtomToken = 0xffff;
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static const uint16_t kAtomsCount =
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static_cast<uint16_t>(mozilla::detail::GkAtoms::Atoms::AtomsCount);
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static_assert(static_cast<size_t>(
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mozilla::detail::GkAtoms::Atoms::AtomsCount) == kAtomsCount,
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"Number of static atoms must fit in a uint16_t");
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static_assert(kDynamicAtomToken >= kAtomsCount,
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"Exceeded supported number of static atoms");
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/* static */
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void ParamTraits<nsAtom*>::Write(MessageWriter* aWriter, const nsAtom* aParam) {
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MOZ_ASSERT(aParam);
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if (aParam->IsStatic()) {
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const nsStaticAtom* atom = aParam->AsStatic();
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uint16_t index = static_cast<uint16_t>(nsGkAtoms::IndexOf(atom));
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MOZ_ASSERT(index < kAtomsCount);
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WriteParam(aWriter, index);
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return;
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}
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WriteParam(aWriter, kDynamicAtomToken);
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nsDependentAtomString atomStr(aParam);
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// nsDependentAtomString is serialized as its base, nsString, but we
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// can be explicit about it.
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nsString& str = atomStr;
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WriteParam(aWriter, str);
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}
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/* static */
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bool ParamTraits<nsAtom*>::Read(MessageReader* aReader,
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RefPtr<nsAtom>* aResult) {
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uint16_t token;
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if (!ReadParam(aReader, &token)) {
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return false;
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}
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if (token != kDynamicAtomToken) {
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if (token >= kAtomsCount) {
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return false;
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}
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*aResult = nsGkAtoms::GetAtomByIndex(token);
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return true;
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}
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nsAutoString str;
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if (!ReadParam(aReader, static_cast<nsString*>(&str))) {
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return false;
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}
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*aResult = NS_Atomize(str);
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MOZ_ASSERT(*aResult);
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return true;
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}
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} // namespace IPC
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