gecko/js/ipc/CPOWTypes.h

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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
* vim: set ts=8 sw=4 et tw=80:
*
* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is
* The Mozilla Foundation.
* Portions created by the Initial Developer are Copyright (C) 2010
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Ben Newman <b{enjam,newma}n@mozilla.com> (original author)
*
* Alternatively, the contents of this file may be used under the terms of
* either of the GNU General Public License Version 2 or later (the "GPL"),
* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#ifndef mozilla_jsipc_ContextWrapperTypes_h__
#define mozilla_jsipc_ContextWrapperTypes_h__
#include "jsapi.h"
#include "jspubtd.h"
using mozilla::void_t;
namespace mozilla {
namespace jsipc {
using namespace IPC;
template <typename P>
struct CPOWSingleton
{
static void Write(Message*, const P&) {}
static bool Read(const Message*, void**, P*) { return true; }
};
template <typename Type, typename As>
struct CPOWConvertible
{
static void Write(Message* m, const Type& t) {
WriteParam(m, As(t));
}
static bool Read(const Message* m, void** iter, Type* tp) {
As a;
return (ReadParam(m, iter, &a) &&
(*tp = Type(a), true));
}
};
} // namespace jsipc
} // namespace mozilla
namespace IPC {
using namespace mozilla::jsipc;
template <> struct ParamTraits<JSType> : public CPOWConvertible<JSType, int> {};
}
// TODO Use a more standard logging mechanism.
#ifdef LOGGING
#define CPOW_LOG(PRINTF_ARGS) \
JS_BEGIN_MACRO \
printf("CPOW | "); \
printf PRINTF_ARGS ; \
printf("\n"); \
JS_END_MACRO
#define JSVAL_TO_CSTR(CX, V) \
NS_ConvertUTF16toUTF8(nsString(JS_GetStringChars(JS_ValueToString(CX, V)))).get()
#else
#define CPOW_LOG(_) JS_BEGIN_MACRO JS_END_MACRO
#define JSVAL_TO_CSTR(CX, V) ((char*)0)
#endif
#endif