0ad/source/scriptinterface/AutoRooters.h

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/* Copyright (C) 2010 Wildfire Games.
* This file is part of 0 A.D.
*
* 0 A.D. is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
*
* 0 A.D. is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with 0 A.D. If not, see <http://www.gnu.org/licenses/>.
*/
#include "js/jsapi.h"
// Exception-safety and GC-safety wrapper for JSIdArray
// (TODO: it'd be nicer to use the existing js::AutoIdArray but currently that
// requires a load of semi-private SpiderMonkey headers that cause a load of compile warnings)
class IdArrayWrapper
{
JSContext* m_cx;
JSIdArray* m_ida;
public:
IdArrayWrapper(JSContext* cx, JSIdArray* ida) :
m_cx(cx), m_ida(ida)
{
for (jsint i = 0; i < m_ida->length; ++i)
if (!JS_AddRoot(m_cx, &m_ida->vector[i]))
debug_warn(L"JS_AddRoot failed");
}
~IdArrayWrapper()
{
for (jsint i = 0; i < m_ida->length; ++i)
if (!JS_RemoveRoot(m_cx, &m_ida->vector[i]))
debug_warn(L"JS_RemoveRoot failed");
JS_DestroyIdArray(m_cx, m_ida);
}
};