1/*
2 * Copyright (C) 2006, 2007, 2008, 2013 Apple Inc. All rights reserved.
3 * Copyright (c) 2011 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
7 * are met:
8 *
9 * 1.  Redistributions of source code must retain the above copyright
10 *     notice, this list of conditions and the following disclaimer.
11 * 2.  Redistributions in binary form must reproduce the above copyright
12 *     notice, this list of conditions and the following disclaimer in the
13 *     documentation and/or other materials provided with the distribution.
14 * 3.  Neither the name of Apple Inc. ("Apple") nor the names of
15 *     its contributors may be used to endorse or promote products derived
16 *     from this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
19 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
20 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
21 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
22 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
23 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
24 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
25 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 */
29
30#include "config.h"
31#include "ScriptValue.h"
32
33#include "APICast.h"
34#include "InspectorValues.h"
35#include "JSLock.h"
36#include "StructureInlines.h"
37
38using namespace JSC;
39using namespace Inspector;
40
41namespace Deprecated {
42
43ScriptValue::~ScriptValue()
44{
45}
46
47bool ScriptValue::getString(ExecState* scriptState, String& result) const
48{
49    if (!m_value)
50        return false;
51    JSLockHolder lock(scriptState);
52    if (!m_value.get().getString(scriptState, result))
53        return false;
54    return true;
55}
56
57String ScriptValue::toString(ExecState* scriptState) const
58{
59    String result = m_value.get().toString(scriptState)->value(scriptState);
60    // Handle the case where an exception is thrown as part of invoking toString on the object.
61    if (scriptState->hadException())
62        scriptState->clearException();
63    return result;
64}
65
66bool ScriptValue::isEqual(ExecState* scriptState, const ScriptValue& anotherValue) const
67{
68    if (hasNoValue())
69        return anotherValue.hasNoValue();
70    return JSValueIsEqual(toRef(scriptState), toRef(scriptState, jsValue()), toRef(scriptState, anotherValue.jsValue()), nullptr);
71}
72
73bool ScriptValue::isNull() const
74{
75    if (!m_value)
76        return false;
77    return m_value.get().isNull();
78}
79
80bool ScriptValue::isUndefined() const
81{
82    if (!m_value)
83        return false;
84    return m_value.get().isUndefined();
85}
86
87bool ScriptValue::isObject() const
88{
89    if (!m_value)
90        return false;
91    return m_value.get().isObject();
92}
93
94bool ScriptValue::isFunction() const
95{
96    CallData callData;
97    return getCallData(m_value.get(), callData) != CallTypeNone;
98}
99
100#if ENABLE(INSPECTOR)
101static PassRefPtr<InspectorValue> jsToInspectorValue(ExecState* scriptState, JSValue value, int maxDepth)
102{
103    if (!value) {
104        ASSERT_NOT_REACHED();
105        return nullptr;
106    }
107
108    if (!maxDepth)
109        return nullptr;
110
111    maxDepth--;
112
113    if (value.isNull() || value.isUndefined())
114        return InspectorValue::null();
115    if (value.isBoolean())
116        return InspectorBasicValue::create(value.asBoolean());
117    if (value.isNumber())
118        return InspectorBasicValue::create(value.asNumber());
119    if (value.isString())
120        return InspectorString::create(value.getString(scriptState));
121
122    if (value.isObject()) {
123        if (isJSArray(value)) {
124            RefPtr<InspectorArray> inspectorArray = InspectorArray::create();
125            JSArray* array = asArray(value);
126            unsigned length = array->length();
127            for (unsigned i = 0; i < length; i++) {
128                JSValue element = array->getIndex(scriptState, i);
129                RefPtr<InspectorValue> elementValue = jsToInspectorValue(scriptState, element, maxDepth);
130                if (!elementValue)
131                    return nullptr;
132                inspectorArray->pushValue(elementValue);
133            }
134            return inspectorArray;
135        }
136        RefPtr<InspectorObject> inspectorObject = InspectorObject::create();
137        JSObject* object = value.getObject();
138        PropertyNameArray propertyNames(scriptState);
139        object->methodTable()->getOwnPropertyNames(object, scriptState, propertyNames, ExcludeDontEnumProperties);
140        for (size_t i = 0; i < propertyNames.size(); i++) {
141            const Identifier& name = propertyNames[i];
142            JSValue propertyValue = object->get(scriptState, name);
143            RefPtr<InspectorValue> inspectorValue = jsToInspectorValue(scriptState, propertyValue, maxDepth);
144            if (!inspectorValue)
145                return nullptr;
146            inspectorObject->setValue(name.string(), inspectorValue);
147        }
148        return inspectorObject;
149    }
150
151    ASSERT_NOT_REACHED();
152    return nullptr;
153}
154
155PassRefPtr<InspectorValue> ScriptValue::toInspectorValue(ExecState* scriptState) const
156{
157    JSLockHolder holder(scriptState);
158    return jsToInspectorValue(scriptState, m_value.get(), InspectorValue::maxDepth);
159}
160#endif // ENABLE(INSPECTOR)
161
162} // namespace Deprecated
163