1/*
2 * Copyright (C) 2009, 2011 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 "ScriptState.h"
33
34#include "Frame.h"
35#include "JSDOMWindowBase.h"
36#include "JSWorkerContext.h"
37#include "Node.h"
38#include "Page.h"
39#include "WorkerContext.h"
40#include "WorkerScriptController.h"
41#include <interpreter/CallFrame.h>
42#include <runtime/JSGlobalObject.h>
43
44namespace WebCore {
45
46ScriptStateProtectedPtr::~ScriptStateProtectedPtr()
47{
48}
49
50ScriptStateProtectedPtr::ScriptStateProtectedPtr(ScriptState* scriptState)
51    : m_globalObject(scriptState->globalData(), scriptState->lexicalGlobalObject())
52{
53}
54
55ScriptState* ScriptStateProtectedPtr::get() const
56{
57    if (m_globalObject)
58        return const_cast<JSC::JSGlobalObject*>(m_globalObject.get())->globalExec();
59    return 0;
60}
61
62
63ScriptState* mainWorldScriptState(Frame* frame)
64{
65    JSDOMWindowShell* shell = frame->script()->windowShell(mainThreadNormalWorld());
66    return shell->window()->globalExec();
67}
68
69ScriptState* scriptStateFromNode(DOMWrapperWorld* world, Node* node)
70{
71    if (!node)
72        return 0;
73    Document* document = node->document();
74    if (!document)
75        return 0;
76    Frame* frame = document->frame();
77    if (!frame)
78        return 0;
79    if (!frame->script()->canExecuteScripts(NotAboutToExecuteScript))
80        return 0;
81    return frame->script()->globalObject(world)->globalExec();
82}
83
84ScriptState* scriptStateFromPage(DOMWrapperWorld* world, Page* page)
85{
86    return page->mainFrame()->script()->globalObject(world)->globalExec();
87}
88
89#if ENABLE(WORKERS)
90ScriptState* scriptStateFromWorkerContext(WorkerContext* workerContext)
91{
92    return workerContext->script()->workerContextWrapper()->globalExec();
93}
94#endif
95
96}
97