ScriptInstance.cpp revision cad810f21b803229eb11403f9209855525a25d57 
1/*
2 * Copyright (C) 2008, 2009 Google Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are
6 * met:
7 *
8 *     * Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 *     * Redistributions in binary form must reproduce the above
11 * copyright notice, this list of conditions and the following disclaimer
12 * in the documentation and/or other materials provided with the
13 * distribution.
14 *     * Neither the name of Google Inc. nor the names of its
15 * contributors may be used to endorse or promote products derived from
16 * this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 */
30
31#include "config.h"
32#include "ScriptInstance.h"
33
34#ifndef NDEBUG
35#include "V8Proxy.h"
36#endif
37#include <wtf/Assertions.h>
38
39namespace WebCore {
40
41V8ScriptInstance::V8ScriptInstance()
42{
43}
44
45V8ScriptInstance::V8ScriptInstance(v8::Handle<v8::Object> instance)
46{
47    set(instance);
48}
49
50V8ScriptInstance::~V8ScriptInstance()
51{
52    clear();
53}
54
55v8::Persistent<v8::Object> V8ScriptInstance::instance()
56{
57    return m_instance;
58}
59
60void V8ScriptInstance::clear()
61{
62    if (m_instance.IsEmpty())
63        return;
64#ifndef NDEBUG
65    V8GCController::unregisterGlobalHandle(this, m_instance);
66#endif
67    m_instance.Dispose();
68    m_instance.Clear();
69}
70
71void V8ScriptInstance::set(v8::Handle<v8::Object> instance)
72{
73    clear();
74    if (instance.IsEmpty())
75        return;
76
77    m_instance = v8::Persistent<v8::Object>::New(instance);
78#ifndef NDEBUG
79    V8GCController::registerGlobalHandle(SCRIPTINSTANCE, this, m_instance);
80#endif
81}
82
83} // namespace WebCore
84