зеркало из https://github.com/mozilla/pjs.git
737 строки
18 KiB
C++
737 строки
18 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 "nsID.h"
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#include "nsMemory.h"
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#include "nsStringGlue.h"
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#include "nsTArray.h"
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#include "gfx3DMatrix.h"
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#include "gfxColor.h"
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#include "gfxMatrix.h"
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#include "gfxPattern.h"
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#include "nsRect.h"
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#include "nsRegion.h"
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#include "gfxASurface.h"
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#include "Layers.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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#if !defined(OS_POSIX)
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// This condition must be kept in sync with the one in
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// ipc_message_utils.h, but this dummy definition of
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// base::FileDescriptor acts as a static assert that we only get one
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// def or the other (or neither, in which case code using
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// FileDescriptor fails to build)
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namespace base { class FileDescriptor { }; }
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#endif
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using mozilla::layers::LayerManager;
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namespace mozilla {
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typedef gfxPattern::GraphicsFilter GraphicsFilterType;
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typedef gfxASurface::gfxSurfaceType gfxSurfaceType;
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typedef LayerManager::LayersBackend LayersBackend;
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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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#if !defined(OS_POSIX)
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// See above re: keeping definitions in sync
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template<>
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struct ParamTraits<base::FileDescriptor>
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{
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typedef base::FileDescriptor paramType;
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static void Write(Message* aMsg, const paramType& aParam) {
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NS_RUNTIMEABORT("FileDescriptor isn't meaningful on this platform");
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}
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static bool Read(const Message* aMsg, void** aIter, paramType* aResult) {
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NS_RUNTIMEABORT("FileDescriptor isn't meaningful on this platform");
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return false;
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}
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};
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#endif // !defined(OS_POSIX)
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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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#ifdef MOZILLA_INTERNAL_API
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template<>
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struct ParamTraits<nsCAutoString> : ParamTraits<nsCString>
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{
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typedef nsCAutoString paramType;
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};
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#endif // MOZILLA_INTERNAL_API
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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, class A>
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struct ParamTraits<nsTArray<E, A> >
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{
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typedef nsTArray<E, A> 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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aResult->SetCapacity(length);
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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<typename E>
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struct ParamTraits<InfallibleTArray<E> > :
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ParamTraits<nsTArray<E, nsTArrayInfallibleAllocator> >
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{
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typedef InfallibleTArray<E> paramType;
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// use nsTArray Write() method
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// deserialize the array fallibly, but return an InfallibleTArray
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static bool Read(const Message* aMsg, void** aIter, paramType* aResult)
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{
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nsTArray<E> temp;
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if (!ReadParam(aMsg, aIter, &temp))
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return false;
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aResult->SwapElements(temp);
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return true;
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}
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// use nsTArray Log() method
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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<gfx3DMatrix>
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{
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typedef gfx3DMatrix paramType;
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static void Write(Message* msg, const paramType& param)
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{
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#define Wr(_f) WriteParam(msg, param. _f)
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Wr(_11); Wr(_12); Wr(_13); Wr(_14);
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Wr(_21); Wr(_22); Wr(_23); Wr(_24);
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Wr(_31); Wr(_32); Wr(_33); Wr(_34);
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Wr(_41); Wr(_42); Wr(_43); Wr(_44);
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#undef Wr
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}
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static bool Read(const Message* msg, void** iter, paramType* result)
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{
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#define Rd(_f) ReadParam(msg, iter, &result-> _f)
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return (Rd(_11) && Rd(_12) && Rd(_13) && Rd(_14) &&
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Rd(_21) && Rd(_22) && Rd(_23) && Rd(_24) &&
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Rd(_31) && Rd(_32) && Rd(_33) && Rd(_34) &&
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Rd(_41) && Rd(_42) && Rd(_43) && Rd(_44));
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#undef Rd
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}
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};
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template<>
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struct ParamTraits<mozilla::GraphicsFilterType>
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{
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typedef mozilla::GraphicsFilterType paramType;
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static void Write(Message* msg, const paramType& param)
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{
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switch (param) {
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case gfxPattern::FILTER_FAST:
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case gfxPattern::FILTER_GOOD:
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case gfxPattern::FILTER_BEST:
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case gfxPattern::FILTER_NEAREST:
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case gfxPattern::FILTER_BILINEAR:
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case gfxPattern::FILTER_GAUSSIAN:
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WriteParam(msg, int32(param));
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return;
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default:
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NS_RUNTIMEABORT("not reached");
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return;
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}
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}
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static bool Read(const Message* msg, void** iter, paramType* result)
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{
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int32 filter;
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if (!ReadParam(msg, iter, &filter))
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return false;
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switch (filter) {
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case gfxPattern::FILTER_FAST:
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case gfxPattern::FILTER_GOOD:
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case gfxPattern::FILTER_BEST:
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case gfxPattern::FILTER_NEAREST:
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case gfxPattern::FILTER_BILINEAR:
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case gfxPattern::FILTER_GAUSSIAN:
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*result = paramType(filter);
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return true;
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default:
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return false;
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}
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}
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};
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template<>
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struct ParamTraits<mozilla::gfxSurfaceType>
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{
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typedef mozilla::gfxSurfaceType paramType;
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static void Write(Message* msg, const paramType& param)
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{
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if (gfxASurface::SurfaceTypeImage <= param &&
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param < gfxASurface::SurfaceTypeMax) {
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WriteParam(msg, int32(param));
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return;
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}
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NS_RUNTIMEABORT("surface type not reached");
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}
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static bool Read(const Message* msg, void** iter, paramType* result)
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{
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int32 filter;
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if (!ReadParam(msg, iter, &filter))
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return false;
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if (gfxASurface::SurfaceTypeImage <= filter &&
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filter < gfxASurface::SurfaceTypeMax) {
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*result = paramType(filter);
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return true;
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}
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return false;
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}
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};
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template<>
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struct ParamTraits<mozilla::LayersBackend>
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{
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typedef mozilla::LayersBackend paramType;
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static void Write(Message* msg, const paramType& param)
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{
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if (LayerManager::LAYERS_NONE < param &&
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param < LayerManager::LAYERS_LAST) {
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WriteParam(msg, int32(param));
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return;
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}
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NS_RUNTIMEABORT("surface type not reached");
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}
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static bool Read(const Message* msg, void** iter, paramType* result)
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{
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int32 type;
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if (!ReadParam(msg, iter, &type))
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return false;
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if (LayerManager::LAYERS_NONE < type &&
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type < LayerManager::LAYERS_LAST) {
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*result = paramType(type);
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return true;
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}
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return false;
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}
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};
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template<>
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struct ParamTraits<gfxRGBA>
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{
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typedef gfxRGBA paramType;
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static void Write(Message* msg, const paramType& param)
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{
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WriteParam(msg, param.r);
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WriteParam(msg, param.g);
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WriteParam(msg, param.b);
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WriteParam(msg, param.a);
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}
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static bool Read(const Message* msg, void** iter, paramType* result)
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{
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|
return (ReadParam(msg, iter, &result->r) &&
|
|
ReadParam(msg, iter, &result->g) &&
|
|
ReadParam(msg, iter, &result->b) &&
|
|
ReadParam(msg, iter, &result->a));
|
|
}
|
|
};
|
|
|
|
template<>
|
|
struct ParamTraits<mozilla::void_t>
|
|
{
|
|
typedef mozilla::void_t paramType;
|
|
static void Write(Message* aMsg, const paramType& aParam) { }
|
|
static bool
|
|
Read(const Message* aMsg, void** aIter, paramType* aResult)
|
|
{
|
|
*aResult = paramType();
|
|
return true;
|
|
}
|
|
};
|
|
|
|
template<>
|
|
struct ParamTraits<mozilla::null_t>
|
|
{
|
|
typedef mozilla::null_t paramType;
|
|
static void Write(Message* aMsg, const paramType& aParam) { }
|
|
static bool
|
|
Read(const Message* aMsg, void** aIter, paramType* aResult)
|
|
{
|
|
*aResult = paramType();
|
|
return true;
|
|
}
|
|
};
|
|
|
|
template<>
|
|
struct ParamTraits<nsIntPoint>
|
|
{
|
|
typedef nsIntPoint paramType;
|
|
|
|
static void Write(Message* msg, const paramType& param)
|
|
{
|
|
WriteParam(msg, param.x);
|
|
WriteParam(msg, param.y);
|
|
}
|
|
|
|
static bool Read(const Message* msg, void** iter, paramType* result)
|
|
{
|
|
return (ReadParam(msg, iter, &result->x) &&
|
|
ReadParam(msg, iter, &result->y));
|
|
}
|
|
};
|
|
|
|
template<>
|
|
struct ParamTraits<nsIntRect>
|
|
{
|
|
typedef nsIntRect paramType;
|
|
|
|
static void Write(Message* msg, const paramType& param)
|
|
{
|
|
WriteParam(msg, param.x);
|
|
WriteParam(msg, param.y);
|
|
WriteParam(msg, param.width);
|
|
WriteParam(msg, param.height);
|
|
}
|
|
|
|
static bool Read(const Message* msg, void** iter, paramType* result)
|
|
{
|
|
return (ReadParam(msg, iter, &result->x) &&
|
|
ReadParam(msg, iter, &result->y) &&
|
|
ReadParam(msg, iter, &result->width) &&
|
|
ReadParam(msg, iter, &result->height));
|
|
}
|
|
};
|
|
|
|
template<>
|
|
struct ParamTraits<nsIntRegion>
|
|
{
|
|
typedef nsIntRegion paramType;
|
|
|
|
static void Write(Message* msg, const paramType& param)
|
|
{
|
|
nsIntRegionRectIterator it(param);
|
|
while (const nsIntRect* r = it.Next())
|
|
WriteParam(msg, *r);
|
|
// empty rects are sentinel values because nsRegions will never
|
|
// contain them
|
|
WriteParam(msg, nsIntRect());
|
|
}
|
|
|
|
static bool Read(const Message* msg, void** iter, paramType* result)
|
|
{
|
|
nsIntRect rect;
|
|
while (ReadParam(msg, iter, &rect)) {
|
|
if (rect.IsEmpty())
|
|
return true;
|
|
result->Or(*result, rect);
|
|
}
|
|
return false;
|
|
}
|
|
};
|
|
|
|
template<>
|
|
struct ParamTraits<nsIntSize>
|
|
{
|
|
typedef nsIntSize paramType;
|
|
|
|
static void Write(Message* msg, const paramType& param)
|
|
{
|
|
WriteParam(msg, param.width);
|
|
WriteParam(msg, param.height);
|
|
}
|
|
|
|
static bool Read(const Message* msg, void** iter, paramType* result)
|
|
{
|
|
return (ReadParam(msg, iter, &result->width) &&
|
|
ReadParam(msg, iter, &result->height));
|
|
}
|
|
};
|
|
|
|
template<>
|
|
struct ParamTraits<nsRect>
|
|
{
|
|
typedef nsRect paramType;
|
|
|
|
static void Write(Message* msg, const paramType& param)
|
|
{
|
|
WriteParam(msg, param.x);
|
|
WriteParam(msg, param.y);
|
|
WriteParam(msg, param.width);
|
|
WriteParam(msg, param.height);
|
|
}
|
|
|
|
static bool Read(const Message* msg, void** iter, paramType* result)
|
|
{
|
|
return (ReadParam(msg, iter, &result->x) &&
|
|
ReadParam(msg, iter, &result->y) &&
|
|
ReadParam(msg, iter, &result->width) &&
|
|
ReadParam(msg, iter, &result->height));
|
|
}
|
|
};
|
|
|
|
template<>
|
|
struct ParamTraits<nsID>
|
|
{
|
|
typedef nsID paramType;
|
|
|
|
static void Write(Message* aMsg, const paramType& aParam)
|
|
{
|
|
WriteParam(aMsg, aParam.m0);
|
|
WriteParam(aMsg, aParam.m1);
|
|
WriteParam(aMsg, aParam.m2);
|
|
for (unsigned int i = 0; i < NS_ARRAY_LENGTH(aParam.m3); i++) {
|
|
WriteParam(aMsg, aParam.m3[i]);
|
|
}
|
|
}
|
|
|
|
static bool Read(const Message* aMsg, void** aIter, paramType* aResult)
|
|
{
|
|
if(!ReadParam(aMsg, aIter, &(aResult->m0)) ||
|
|
!ReadParam(aMsg, aIter, &(aResult->m1)) ||
|
|
!ReadParam(aMsg, aIter, &(aResult->m2)))
|
|
return false;
|
|
|
|
for (unsigned int i = 0; i < NS_ARRAY_LENGTH(aResult->m3); i++)
|
|
if (!ReadParam(aMsg, aIter, &(aResult->m3[i])))
|
|
return false;
|
|
|
|
return true;
|
|
}
|
|
|
|
static void Log(const paramType& aParam, std::wstring* aLog)
|
|
{
|
|
aLog->append(L"{");
|
|
aLog->append(StringPrintf(L"%8.8X-%4.4X-%4.4X-",
|
|
aParam.m0,
|
|
aParam.m1,
|
|
aParam.m2));
|
|
for (unsigned int i = 0; i < NS_ARRAY_LENGTH(aParam.m3); i++)
|
|
aLog->append(StringPrintf(L"%2.2X", aParam.m3[i]));
|
|
aLog->append(L"}");
|
|
}
|
|
};
|
|
|
|
} /* namespace IPC */
|
|
|
|
#endif /* __IPC_GLUE_IPCMESSAGEUTILS_H__ */
|