1/*
2 * Copyright (C) 2014 Apple 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
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#pragma once
27
28#include "CallFrame.h"
29#include "JSGlobalObject.h"
30
31namespace JSC {
32
33class DebuggerEvalEnabler {
34public:
35 enum class Mode {
36 EvalOnCurrentCallFrame,
37 EvalOnCallFrameAtDebuggerEntry,
38 };
39
40 DebuggerEvalEnabler(const ExecState* exec, Mode mode = Mode::EvalOnCurrentCallFrame)
41 : m_exec(exec)
42#if !ASSERT_DISABLED
43 , m_mode(mode)
44#endif
45
46 {
47 UNUSED_PARAM(mode);
48 if (exec) {
49 JSGlobalObject* globalObject = exec->lexicalGlobalObject();
50 m_evalWasDisabled = !globalObject->evalEnabled();
51 if (m_evalWasDisabled)
52 globalObject->setEvalEnabled(true, globalObject->evalDisabledErrorMessage());
53#if !ASSERT_DISABLED
54 if (m_mode == Mode::EvalOnCallFrameAtDebuggerEntry)
55 globalObject->setCallFrameAtDebuggerEntry(exec);
56#endif
57 }
58 }
59
60 ~DebuggerEvalEnabler()
61 {
62 if (m_exec) {
63 JSGlobalObject* globalObject = m_exec->lexicalGlobalObject();
64 if (m_evalWasDisabled)
65 globalObject->setEvalEnabled(false, globalObject->evalDisabledErrorMessage());
66#if !ASSERT_DISABLED
67 if (m_mode == Mode::EvalOnCallFrameAtDebuggerEntry)
68 globalObject->setCallFrameAtDebuggerEntry(nullptr);
69#endif
70 }
71 }
72
73private:
74 const ExecState* m_exec;
75 bool m_evalWasDisabled { false };
76#if !ASSERT_DISABLED
77 DebuggerEvalEnabler::Mode m_mode;
78#endif
79};
80
81} // namespace JSC
82