зеркало из https://github.com/mozilla/gecko-dev.git
85 строки
2.6 KiB
C++
85 строки
2.6 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/. */
|
|
|
|
#include "ipc/IPCMessageUtils.h"
|
|
#include "mozilla/ErrorResult.h"
|
|
#include "mozilla/Assertions.h"
|
|
#include "mozilla/Move.h"
|
|
|
|
#ifndef IPC_ErrorIPCUtils_h
|
|
#define IPC_ErrorIPCUtils_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(Message* aMsg, 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(aMsg, aParam.mResult);
|
|
WriteParam(aMsg, aParam.IsErrorWithMessage());
|
|
WriteParam(aMsg, aParam.IsDOMException());
|
|
if (aParam.IsErrorWithMessage()) {
|
|
aParam.SerializeMessage(aMsg);
|
|
} else if (aParam.IsDOMException()) {
|
|
aParam.SerializeDOMExceptionInfo(aMsg);
|
|
}
|
|
}
|
|
|
|
static bool Read(const Message* aMsg, void** aIter, paramType* aResult)
|
|
{
|
|
paramType readValue;
|
|
if (!ReadParam(aMsg, aIter, &readValue.mResult)) {
|
|
return false;
|
|
}
|
|
bool hasMessage = false;
|
|
if (!ReadParam(aMsg, aIter, &hasMessage)) {
|
|
return false;
|
|
}
|
|
bool hasDOMExceptionInfo = false;
|
|
if (!ReadParam(aMsg, aIter, &hasDOMExceptionInfo)) {
|
|
return false;
|
|
}
|
|
if (hasMessage && hasDOMExceptionInfo) {
|
|
// Shouldn't have both!
|
|
return false;
|
|
}
|
|
if (hasMessage && !readValue.DeserializeMessage(aMsg, aIter)) {
|
|
return false;
|
|
} else if (hasDOMExceptionInfo &&
|
|
!readValue.DeserializeDOMExceptionInfo(aMsg, aIter)) {
|
|
return false;
|
|
}
|
|
*aResult = Move(readValue);
|
|
return true;
|
|
}
|
|
};
|
|
|
|
} // namespace IPC
|
|
|
|
#endif
|