1/*
2 * Copyright (C) 2014-2018 Apple Inc. All rights reserved.
3 * Copyright (c) 2010 Google Inc. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are
7 * met:
8 *
9 * * Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * * Redistributions in binary form must reproduce the above
12 * copyright notice, this list of conditions and the following disclaimer
13 * in the documentation and/or other materials provided with the
14 * distribution.
15 * * Neither the name of Google Inc. nor the names of its
16 * contributors may be used to endorse or promote products derived from
17 * this software without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
20 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
21 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
22 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
23 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
24 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
25 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 */
31
32#include "config.h"
33#include "ScriptArguments.h"
34
35#include "CatchScope.h"
36#include "JSCInlines.h"
37#include "ProxyObject.h"
38#include "StrongInlines.h"
39
40namespace Inspector {
41
42Ref<ScriptArguments> ScriptArguments::create(JSC::ExecState& state, Vector<JSC::Strong<JSC::Unknown>>&& arguments)
43{
44 return adoptRef(*new ScriptArguments(state, WTFMove(arguments)));
45}
46
47ScriptArguments::ScriptArguments(JSC::ExecState& state, Vector<JSC::Strong<JSC::Unknown>>&& arguments)
48 : m_globalObject(state.vm(), state.lexicalGlobalObject())
49 , m_arguments(WTFMove(arguments))
50{
51}
52
53ScriptArguments::~ScriptArguments() = default;
54
55JSC::JSValue ScriptArguments::argumentAt(size_t index) const
56{
57 ASSERT(m_arguments.size() > index);
58 return m_arguments[index].get();
59}
60
61JSC::ExecState* ScriptArguments::globalState() const
62{
63 if (m_globalObject)
64 return const_cast<JSC::JSGlobalObject*>(m_globalObject.get())->globalExec();
65
66 return nullptr;
67}
68
69bool ScriptArguments::getFirstArgumentAsString(String& result)
70{
71 if (!argumentCount())
72 return false;
73
74 auto* state = globalState();
75 if (!state) {
76 ASSERT_NOT_REACHED();
77 return false;
78 }
79
80 auto value = argumentAt(0);
81 if (JSC::jsDynamicCast<JSC::ProxyObject*>(state->vm(), value)) {
82 result = "[object Proxy]"_s;
83 return true;
84 }
85
86 auto scope = DECLARE_CATCH_SCOPE(state->vm());
87 result = value.toWTFString(state);
88 scope.clearException();
89 return true;
90}
91
92bool ScriptArguments::isEqual(const ScriptArguments& other) const
93{
94 auto size = m_arguments.size();
95
96 if (size != other.m_arguments.size())
97 return false;
98
99 if (!size)
100 return true;
101
102 auto* state = globalState();
103 if (!state)
104 return false;
105
106 for (size_t i = 0; i < size; ++i) {
107 auto a = m_arguments[i].get();
108 auto b = other.m_arguments[i].get();
109 if (!a || !b) {
110 if (a != b)
111 return false;
112 } else {
113 auto scope = DECLARE_CATCH_SCOPE(state->vm());
114 bool result = JSC::JSValue::strictEqual(state, a, b);
115 scope.clearException();
116 if (!result)
117 return false;
118 }
119 }
120
121 return true;
122}
123
124} // namespace Inspector
125