third_party/blink/renderer/modules/webdatabase/sql_result_set_row_list.cc

/*
 * Copyright (C) 2007 Apple 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.
 * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of
 *     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
 * 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 "third_party/blink/renderer/modules/webdatabase/sql_result_set_row_list.h"

#include "third_party/blink/renderer/bindings/core/v8/script_value.h"
#include "third_party/blink/renderer/bindings/core/v8/to_v8_for_core.h"
#include "third_party/blink/renderer/bindings/modules/v8/to_v8_for_modules.h"
#include "third_party/blink/renderer/platform/bindings/exception_messages.h"

namespace blink {

unsigned SQLResultSetRowList::length() const {
  if (result_.size() == 0)
    return 0;

  DCHECK_EQ(result_.size() % columns_.size(), 0u);

  return result_.size() / columns_.size();
}

ScriptValue SQLResultSetRowList::item(ScriptState* script_state,
                                      unsigned index,
                                      ExceptionState& exception_state) {
  if (index >= length()) {
    exception_state.ThrowDOMException(
        DOMExceptionCode::kIndexSizeError,
        ExceptionMessages::IndexExceedsMaximumBound<unsigned>("index", index,
                                                              length()));
    return ScriptValue();
  }

  unsigned num_columns = columns_.size();
  unsigned values_index = index * num_columns;

  Vector<std::pair<String, SQLValue>> data_array;
  for (unsigned i = 0; i < num_columns; ++i)
    data_array.push_back(
        std::make_pair(columns_[i], result_[values_index + i]));

  return ScriptValue::From(script_state, data_array);
}

}  // namespace blink