mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-11-24 13:21:05 +00:00
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
107 lines
3.3 KiB
C++
107 lines
3.3 KiB
C++
/* -*- 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 IPC_ErrorIPCUtils_h
|
|
#define IPC_ErrorIPCUtils_h
|
|
|
|
#include <utility>
|
|
|
|
#include "ipc/EnumSerializer.h"
|
|
#include "ipc/IPCMessageUtils.h"
|
|
#include "mozilla/Assertions.h"
|
|
#include "mozilla/ErrorResult.h"
|
|
|
|
namespace IPC {
|
|
|
|
template <>
|
|
struct ParamTraits<mozilla::dom::ErrNum>
|
|
: public ContiguousEnumSerializer<
|
|
mozilla::dom::ErrNum, mozilla::dom::ErrNum(0),
|
|
mozilla::dom::ErrNum(mozilla::dom::Err_Limit)> {};
|
|
|
|
template <>
|
|
struct ParamTraits<mozilla::ErrorResult> {
|
|
typedef mozilla::ErrorResult paramType;
|
|
|
|
static void Write(MessageWriter* aWriter, const paramType& aParam) {
|
|
// It should be the case that mMightHaveUnreportedJSException can only be
|
|
// true when we're expecting a JS exception. We cannot send such messages
|
|
// over the IPC channel since there is no sane way of transferring the JS
|
|
// value over to the other side. Callers should never do that.
|
|
MOZ_ASSERT_IF(aParam.IsJSException(),
|
|
aParam.mMightHaveUnreportedJSException);
|
|
if (aParam.IsJSException()
|
|
#ifdef DEBUG
|
|
|| aParam.mMightHaveUnreportedJSException
|
|
#endif
|
|
) {
|
|
MOZ_CRASH(
|
|
"Cannot encode an ErrorResult representing a Javascript exception");
|
|
}
|
|
|
|
WriteParam(aWriter, aParam.mResult);
|
|
WriteParam(aWriter, aParam.IsErrorWithMessage());
|
|
WriteParam(aWriter, aParam.IsDOMException());
|
|
if (aParam.IsErrorWithMessage()) {
|
|
aParam.SerializeMessage(aWriter);
|
|
} else if (aParam.IsDOMException()) {
|
|
aParam.SerializeDOMExceptionInfo(aWriter);
|
|
}
|
|
}
|
|
|
|
static void Write(MessageWriter* aWriter, paramType&& aParam) {
|
|
Write(aWriter, static_cast<const paramType&>(aParam));
|
|
aParam.SuppressException();
|
|
}
|
|
|
|
static bool Read(MessageReader* aReader, paramType* aResult) {
|
|
paramType readValue;
|
|
if (!ReadParam(aReader, &readValue.mResult)) {
|
|
return false;
|
|
}
|
|
bool hasMessage = false;
|
|
if (!ReadParam(aReader, &hasMessage)) {
|
|
return false;
|
|
}
|
|
bool hasDOMExceptionInfo = false;
|
|
if (!ReadParam(aReader, &hasDOMExceptionInfo)) {
|
|
return false;
|
|
}
|
|
if (hasMessage && hasDOMExceptionInfo) {
|
|
// Shouldn't have both!
|
|
return false;
|
|
}
|
|
if (hasMessage && !readValue.DeserializeMessage(aReader)) {
|
|
return false;
|
|
} else if (hasDOMExceptionInfo &&
|
|
!readValue.DeserializeDOMExceptionInfo(aReader)) {
|
|
return false;
|
|
}
|
|
*aResult = std::move(readValue);
|
|
return true;
|
|
}
|
|
};
|
|
|
|
template <>
|
|
struct ParamTraits<mozilla::CopyableErrorResult> {
|
|
typedef mozilla::CopyableErrorResult paramType;
|
|
|
|
static void Write(MessageWriter* aWriter, const paramType& aParam) {
|
|
ParamTraits<mozilla::ErrorResult>::Write(aWriter, aParam);
|
|
}
|
|
|
|
static bool Read(MessageReader* aReader, paramType* aResult) {
|
|
// We can't cast *aResult to ErrorResult&, so cheat and just cast
|
|
// to ErrorResult*.
|
|
return ParamTraits<mozilla::ErrorResult>::Read(
|
|
aReader, reinterpret_cast<mozilla::ErrorResult*>(aResult));
|
|
}
|
|
};
|
|
|
|
} // namespace IPC
|
|
|
|
#endif
|