зеркало из https://github.com/mozilla/pjs.git
363 строки
8.9 KiB
C++
363 строки
8.9 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set sw=2 ts=8 et tw=80 : */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is Mozilla IPC.
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*
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* The Initial Developer of the Original Code is
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* Ben Turner <bent.mozilla@gmail.com>.
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* Portions created by the Initial Developer are Copyright (C) 2009
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#ifndef __IPC_GLUE_IPCMESSAGEUTILS_H__
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#define __IPC_GLUE_IPCMESSAGEUTILS_H__
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#include "chrome/common/ipc_message_utils.h"
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#include "prtypes.h"
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#include "nsStringGlue.h"
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#include "nsTArray.h"
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#include "gfxMatrix.h"
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#ifdef _MSC_VER
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#pragma warning( disable : 4800 )
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#endif
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namespace mozilla {
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// XXX there are out of place and might be generally useful. Could
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// move to nscore.h or something.
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struct void_t {
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bool operator==(const void_t&) const { return true; }
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};
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struct null_t {
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bool operator==(const null_t&) const { return true; }
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};
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} // namespace mozilla
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namespace IPC {
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template<>
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struct ParamTraits<PRInt8>
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{
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typedef PRInt8 paramType;
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static void Write(Message* aMsg, const paramType& aParam)
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{
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aMsg->WriteBytes(&aParam, sizeof(aParam));
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}
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static bool Read(const Message* aMsg, void** aIter, paramType* aResult)
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{
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const char* outp;
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if (!aMsg->ReadBytes(aIter, &outp, sizeof(*aResult)))
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return false;
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*aResult = *reinterpret_cast<const paramType*>(outp);
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return true;
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}
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};
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template<>
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struct ParamTraits<PRUint8>
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{
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typedef PRUint8 paramType;
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static void Write(Message* aMsg, const paramType& aParam)
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{
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aMsg->WriteBytes(&aParam, sizeof(aParam));
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}
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static bool Read(const Message* aMsg, void** aIter, paramType* aResult)
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{
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const char* outp;
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if (!aMsg->ReadBytes(aIter, &outp, sizeof(*aResult)))
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return false;
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*aResult = *reinterpret_cast<const paramType*>(outp);
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return true;
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}
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};
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template <>
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struct ParamTraits<nsACString>
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{
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typedef nsACString paramType;
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static void Write(Message* aMsg, const paramType& aParam)
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{
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bool isVoid = aParam.IsVoid();
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aMsg->WriteBool(isVoid);
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if (isVoid)
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// represents a NULL pointer
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return;
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PRUint32 length = aParam.Length();
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WriteParam(aMsg, length);
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aMsg->WriteBytes(aParam.BeginReading(), length);
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}
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static bool Read(const Message* aMsg, void** aIter, paramType* aResult)
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{
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bool isVoid;
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if (!aMsg->ReadBool(aIter, &isVoid))
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return false;
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if (isVoid) {
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aResult->SetIsVoid(PR_TRUE);
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return true;
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}
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PRUint32 length;
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if (ReadParam(aMsg, aIter, &length)) {
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const char* buf;
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if (aMsg->ReadBytes(aIter, &buf, length)) {
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aResult->Assign(buf, length);
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return true;
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}
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}
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return false;
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}
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static void Log(const paramType& aParam, std::wstring* aLog)
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{
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if (aParam.IsVoid())
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aLog->append(L"(NULL)");
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else
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aLog->append(UTF8ToWide(aParam.BeginReading()));
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}
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};
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template <>
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struct ParamTraits<nsAString>
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{
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typedef nsAString paramType;
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static void Write(Message* aMsg, const paramType& aParam)
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{
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bool isVoid = aParam.IsVoid();
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aMsg->WriteBool(isVoid);
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if (isVoid)
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// represents a NULL pointer
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return;
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PRUint32 length = aParam.Length();
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WriteParam(aMsg, length);
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aMsg->WriteBytes(aParam.BeginReading(), length * sizeof(PRUnichar));
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}
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static bool Read(const Message* aMsg, void** aIter, paramType* aResult)
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{
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bool isVoid;
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if (!aMsg->ReadBool(aIter, &isVoid))
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return false;
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if (isVoid) {
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aResult->SetIsVoid(PR_TRUE);
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return true;
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}
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PRUint32 length;
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if (ReadParam(aMsg, aIter, &length)) {
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const PRUnichar* buf;
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if (aMsg->ReadBytes(aIter, reinterpret_cast<const char**>(&buf),
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length * sizeof(PRUnichar))) {
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aResult->Assign(buf, length);
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return true;
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}
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}
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return false;
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}
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static void Log(const paramType& aParam, std::wstring* aLog)
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{
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if (aParam.IsVoid())
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aLog->append(L"(NULL)");
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else {
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#ifdef WCHAR_T_IS_UTF16
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aLog->append(reinterpret_cast<const wchar_t*>(aParam.BeginReading()));
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#else
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PRUint32 length = aParam.Length();
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for (PRUint32 index = 0; index < length; index++) {
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aLog->push_back(std::wstring::value_type(aParam[index]));
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}
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#endif
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}
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}
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};
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template <>
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struct ParamTraits<nsCString> : ParamTraits<nsACString>
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{
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typedef nsCString paramType;
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};
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template <>
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struct ParamTraits<nsString> : ParamTraits<nsAString>
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{
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typedef nsString paramType;
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};
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template <typename E>
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struct ParamTraits<nsTArray<E> >
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{
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typedef nsTArray<E> paramType;
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static void Write(Message* aMsg, const paramType& aParam)
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{
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PRUint32 length = aParam.Length();
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WriteParam(aMsg, length);
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for (PRUint32 index = 0; index < length; index++) {
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WriteParam(aMsg, aParam[index]);
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}
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}
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static bool Read(const Message* aMsg, void** aIter, paramType* aResult)
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{
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PRUint32 length;
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if (!ReadParam(aMsg, aIter, &length)) {
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return false;
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}
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for (PRUint32 index = 0; index < length; index++) {
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E* element = aResult->AppendElement();
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if (!(element && ReadParam(aMsg, aIter, element))) {
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return false;
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}
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}
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return true;
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}
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static void Log(const paramType& aParam, std::wstring* aLog)
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{
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for (PRUint32 index = 0; index < aParam.Length(); index++) {
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if (index) {
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aLog->append(L" ");
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}
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LogParam(aParam[index], aLog);
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}
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}
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};
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template<>
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struct ParamTraits<float>
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{
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typedef float paramType;
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static void Write(Message* aMsg, const paramType& aParam)
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{
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aMsg->WriteBytes(&aParam, sizeof(paramType));
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}
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static bool Read(const Message* aMsg, void** aIter, paramType* aResult)
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{
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const char* outFloat;
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if (!aMsg->ReadBytes(aIter, &outFloat, sizeof(float)))
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return false;
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*aResult = *reinterpret_cast<const float*>(outFloat);
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return true;
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}
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static void Log(const paramType& aParam, std::wstring* aLog)
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{
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aLog->append(StringPrintf(L"%g", aParam));
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}
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};
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template<>
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struct ParamTraits<gfxMatrix>
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{
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typedef gfxMatrix paramType;
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static void Write(Message* aMsg, const paramType& aParam)
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{
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WriteParam(aMsg, aParam.xx);
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WriteParam(aMsg, aParam.xy);
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WriteParam(aMsg, aParam.yx);
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WriteParam(aMsg, aParam.yy);
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WriteParam(aMsg, aParam.x0);
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WriteParam(aMsg, aParam.y0);
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}
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static bool Read(const Message* aMsg, void** aIter, paramType* aResult)
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{
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if (ReadParam(aMsg, aIter, &aResult->xx) &&
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ReadParam(aMsg, aIter, &aResult->xy) &&
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ReadParam(aMsg, aIter, &aResult->yx) &&
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ReadParam(aMsg, aIter, &aResult->yy) &&
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ReadParam(aMsg, aIter, &aResult->x0) &&
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ReadParam(aMsg, aIter, &aResult->y0))
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return true;
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return false;
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}
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static void Log(const paramType& aParam, std::wstring* aLog)
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{
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aLog->append(StringPrintf(L"[[%g %g] [%g %g] [%g %g]]", aParam.xx, aParam.xy, aParam.yx, aParam.yy,
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aParam.x0, aParam.y0));
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}
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};
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template<>
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struct ParamTraits<mozilla::void_t>
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{
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typedef mozilla::void_t paramType;
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static void Write(Message* aMsg, const paramType& aParam) { }
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static bool
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Read(const Message* aMsg, void** aIter, paramType* aResult)
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{
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*aResult = paramType();
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return true;
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}
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};
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template<>
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struct ParamTraits<mozilla::null_t>
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{
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typedef mozilla::null_t paramType;
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static void Write(Message* aMsg, const paramType& aParam) { }
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static bool
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Read(const Message* aMsg, void** aIter, paramType* aResult)
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{
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*aResult = paramType();
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return true;
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}
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};
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} /* namespace IPC */
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#endif /* __IPC_GLUE_IPCMESSAGEUTILS_H__ */
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