1/*
2 * Copyright (C) 2006, 2008 Apple Inc. All rights reserved.
3 *
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Library General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
8 *
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Library General Public License for more details.
13 *
14 * You should have received a copy of the GNU Library General Public License
15 * along with this library; see the file COPYING.LIB. If not, write to
16 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
17 * Boston, MA 02110-1301, USA.
18 *
19 */
20
21#include "config.h"
22#include "PropertyNameArray.h"
23
24#include "Structure.h"
25#include "StructureChain.h"
26
27namespace JSC {
28
29static const size_t setThreshold = 20;
30
31void PropertyNameArray::add(UString::Rep* identifier)
32{
33 ASSERT(identifier == &UString::Rep::null() || identifier == &UString::Rep::empty() || identifier->isIdentifier());
34
35 size_t size = m_data->propertyNameVector().size();
36 if (size < setThreshold) {
37 for (size_t i = 0; i < size; ++i) {
38 if (identifier == m_data->propertyNameVector()[i].ustring().rep())
39 return;
40 }
41 } else {
42 if (m_set.isEmpty()) {
43 for (size_t i = 0; i < size; ++i)
44 m_set.add(value: m_data->propertyNameVector()[i].ustring().rep());
45 }
46 if (!m_set.add(value: identifier).second)
47 return;
48 }
49
50 addKnownUnique(identifier);
51}
52
53} // namespace JSC
54

source code of qtscript/src/3rdparty/javascriptcore/JavaScriptCore/runtime/PropertyNameArray.cpp