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/*
* Copyright (C) 2011 Google Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "modules/indexeddb/IDBKey.h"
namespace WebCore {
IDBKey::~IDBKey()
{
}
bool IDBKey::isValid() const
{
if (m_type == InvalidType)
return false;
if (m_type == ArrayType) {
for (size_t i = 0; i < m_array.size(); i++) {
if (!m_array[i]->isValid())
return false;
}
}
return true;
}
// Safely compare numbers (signed/unsigned ints/floats/doubles).
template <typename T>
static int compareNumbers(const T& a, const T& b)
{
if (a < b)
return -1;
if (b < a)
return 1;
return 0;
}
int IDBKey::compare(const IDBKey* other) const
{
ASSERT(other);
if (m_type != other->m_type)
return m_type > other->m_type ? -1 : 1;
switch (m_type) {
case ArrayType:
for (size_t i = 0; i < m_array.size() && i < other->m_array.size(); ++i) {
if (int result = m_array[i]->compare(other->m_array[i].get()))
return result;
}
return compareNumbers(m_array.size(), other->m_array.size());
case BinaryType:
if (int result = memcmp(m_binary->data(), other->m_binary->data(), std::min(m_binary->size(), other->m_binary->size())))
return result < 0 ? -1 : 1;
return compareNumbers(m_binary->size(), other->m_binary->size());
case StringType:
return codePointCompare(m_string, other->m_string);
case DateType:
case NumberType:
return compareNumbers(m_number, other->m_number);
case InvalidType:
case MinType:
ASSERT_NOT_REACHED();
return 0;
}
ASSERT_NOT_REACHED();
return 0;
}
bool IDBKey::isLessThan(const IDBKey* other) const
{
ASSERT(other);
return compare(other) == -1;
}
bool IDBKey::isEqual(const IDBKey* other) const
{
if (!other)
return false;
return !compare(other);
}
} // namespace WebCore
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