ArrayValue.cpp   [plain text]

/*
 * Copyright (C) 2012 Google Inc. All rights reserved.
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 *
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 * 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
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#include "config.h"
#include "ArrayValue.h"

#include "Dictionary.h"
#include <runtime/JSArray.h>

using namespace JSC;

namespace WebCore {

ArrayValue::ArrayValue()
    : m_exec(0)
{
}

ArrayValue::ArrayValue(JSC::ExecState* exec, JSC::JSValue value)
    : m_exec(exec)
{
    if (!value.isUndefinedOrNull() && isJSArray(value))
        m_value = value;
}

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

bool ArrayValue::isUndefinedOrNull() const
{
    return m_value.isEmpty() || m_value.isUndefinedOrNull();
}

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

    JSArray* array = asArray(m_value);
    length = array->length();
    return true;
}

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

    JSValue indexedValue = asArray(m_value)->getIndex(m_exec, index);
    if (indexedValue.isUndefinedOrNull() || !indexedValue.isObject())
        return false;

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

} // namespace WebCore