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Implement WeakRef Object

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related test262 test-cases has been removed from the skip list

Except two test since it needs FinalizationRegistry feature

Signed-off-by: bence gabor kis <kisbg@inf.u-szeged.hu>
This commit is contained in:
bence gabor kis 2021-01-11 09:02:10 +01:00 • committed by Patrick Kim
commit ccd0ec704c
11 changed files with 234 additions and 24 deletions
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58
src/runtime/WeakRefObject.cpp Normal file
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/*
* Copyright (c) 2021-present Samsung Electronics Co., Ltd
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301
* USA
*/
#include "Escargot.h"
#include "WeakRefObject.h"
#include "ArrayObject.h"
#include "Context.h"
namespace Escargot {
WeakRefObject::WeakRefObject(ExecutionState& state, Object* target)
: WeakRefObject(state, state.context()->globalObject()->weakRefPrototype(), target)
{
}
WeakRefObject::WeakRefObject(ExecutionState& state, Object* proto, Object* target)
: Object(state, proto)
, m_target(target)
{
}
void* WeakRefObject::operator new(size_t size)
{
static bool typeInited = false;
static GC_descr descr;
if (!typeInited) {
GC_word obj_bitmap[GC_BITMAP_SIZE(WeakRefObject)] = { 0 };
Object::fillGCDescriptor(obj_bitmap);
GC_set_bit(obj_bitmap, GC_WORD_OFFSET(WeakRefObject, m_target));
descr = GC_make_descriptor(obj_bitmap, GC_WORD_LEN(WeakRefObject));
typeInited = true;
}
return GC_MALLOC_EXPLICITLY_TYPED(size, descr);
}
bool WeakRefObject::deleteOperation(ExecutionState& state)
{
m_target = nullptr;
return true;
}
} // namespace Escargot