Source/WebCore/Modules/webdatabase/SQLResultSetRowList.cpp

/*
 * Copyright (C) 2007 Apple Inc. All rights reserved.
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 * modification, are permitted provided that the following conditions
 * are met:
 *
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 *     notice, this list of conditions and the following disclaimer.
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 *     its contributors may be used to endorse or promote products derived
 *     from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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#include "config.h"
#include "SQLResultSetRowList.h"

namespace WebCore {

unsigned SQLResultSetRowList::length() const
{
    if (m_result.isEmpty())
        return 0;

    ASSERT(m_result.size() % m_columns.size() == 0);

    return m_result.size() / m_columns.size();
}

ExceptionOr<Vector<WTF::KeyValuePair<String, SQLValue>>> SQLResultSetRowList::item(unsigned index) const
{
    if (index >= length())
        return Exception { IndexSizeError };

    Vector<WTF::KeyValuePair<String, SQLValue>> result;

    unsigned numberOfColumns = m_columns.size();
    unsigned valuesIndex = index * numberOfColumns;
    for (unsigned i = 0; i < numberOfColumns; i++)
        result.append({ m_columns[i], m_result[valuesIndex + i] });

    return WTFMove(result);
}

}