third_party/WebKit/Source/bindings/core/v8/ArrayValue.cpp

/*
 * Copyright (C) 2012 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 "bindings/core/v8/ArrayValue.h"

#include "bindings/core/v8/Dictionary.h"
#include "bindings/core/v8/V8Binding.h"

namespace blink {

ArrayValue& ArrayValue::operator=(const ArrayValue& other) {
  m_array = other.m_array;
  m_isolate = other.m_isolate;
  return *this;
}

bool ArrayValue::isUndefinedOrNull() const {
  return blink::isUndefinedOrNull(m_array);
}

bool ArrayValue::length(size_t& length) const {
  if (isUndefinedOrNull())
    return false;

  length = m_array->Length();
  return true;
}

bool ArrayValue::get(size_t index, Dictionary& value) const {
  if (isUndefinedOrNull())
    return false;

  if (index >= m_array->Length())
    return false;

  DCHECK(m_isolate);
  DCHECK_EQ(m_isolate, v8::Isolate::GetCurrent());
  v8::Local<v8::Value> indexedValue;
  if (!m_array->Get(m_isolate->GetCurrentContext(), index)
           .ToLocal(&indexedValue) ||
      !indexedValue->IsObject())
    return false;

  value = Dictionary(m_isolate, indexedValue);
  return true;
}

}  // namespace blink