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 

    27 namespace JSC {

    28 

    29 static const size_t setThreshold = 20;

    30 

    31 void PropertyNameArray::add(UString::Rep* identifier)

    32 {

    33     ASSERT(identifier == UString::null().rep() || 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(m_data->propertyNameVector()[i].ustring().rep());

    45         }

    46         if (!m_set.add(identifier).second)

    47             return;

    48     }

    49 

    50     addKnownUnique(identifier);

    51 }

    52 

    53 } // namespace JSC