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      1 /*
      2  * Copyright (C) 2011 Google Inc. All rights reserved.
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions
      6  * are met:
      7  *
      8  * 1.  Redistributions of source code must retain the above copyright
      9  *     notice, this list of conditions and the following disclaimer.
     10  * 2.  Redistributions in binary form must reproduce the above copyright
     11  *     notice, this list of conditions and the following disclaimer in the
     12  *     documentation and/or other materials provided with the distribution.
     13  *
     14  * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
     15  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
     16  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
     17  * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
     18  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
     19  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     20  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
     21  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     23  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     24  */
     25 
     26 #include "config.h"
     27 #include "modules/indexeddb/IDBKey.h"
     28 
     29 namespace WebCore {
     30 
     31 IDBKey::~IDBKey()
     32 {
     33 }
     34 
     35 bool IDBKey::isValid() const
     36 {
     37     if (m_type == InvalidType)
     38         return false;
     39 
     40     if (m_type == ArrayType) {
     41         for (size_t i = 0; i < m_array.size(); i++) {
     42             if (!m_array[i]->isValid())
     43                 return false;
     44         }
     45     }
     46 
     47     return true;
     48 }
     49 
     50 int IDBKey::compare(const IDBKey* other) const
     51 {
     52     ASSERT(other);
     53     if (m_type != other->m_type)
     54         return m_type > other->m_type ? -1 : 1;
     55 
     56     switch (m_type) {
     57     case ArrayType:
     58         for (size_t i = 0; i < m_array.size() && i < other->m_array.size(); ++i) {
     59             if (int result = m_array[i]->compare(other->m_array[i].get()))
     60                 return result;
     61         }
     62         if (m_array.size() < other->m_array.size())
     63             return -1;
     64         if (m_array.size() > other->m_array.size())
     65             return 1;
     66         return 0;
     67     case StringType:
     68         return -codePointCompare(other->m_string, m_string);
     69     case DateType:
     70     case NumberType:
     71         return (m_number < other->m_number) ? -1 :
     72                 (m_number > other-> m_number) ? 1 : 0;
     73     case InvalidType:
     74     case MinType:
     75         ASSERT_NOT_REACHED();
     76         return 0;
     77     }
     78 
     79     ASSERT_NOT_REACHED();
     80     return 0;
     81 }
     82 
     83 bool IDBKey::isLessThan(const IDBKey* other) const
     84 {
     85     ASSERT(other);
     86     return compare(other) == -1;
     87 }
     88 
     89 bool IDBKey::isEqual(const IDBKey* other) const
     90 {
     91     if (!other)
     92         return false;
     93 
     94     return !compare(other);
     95 }
     96 
     97 } // namespace WebCore
     98