1/*
2 * Copyright (C) 2006, 2007, 2008 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 Computer, 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 "InspectorValues.h"
34#include "SerializedScriptValue.h"
35
36#include <JavaScriptCore/APICast.h>
37#include <JavaScriptCore/JSValueRef.h>
38
39#include <heap/Strong.h>
40#include <runtime/JSLock.h>
41#include <runtime/UString.h>
42
43using namespace JSC;
44
45namespace WebCore {
46
47bool ScriptValue::getString(ScriptState* scriptState, String& result) const
48{
49    if (!m_value)
50        return false;
51    JSLock lock(SilenceAssertionsOnly);
52    UString ustring;
53    if (!m_value.get().getString(scriptState, ustring))
54        return false;
55    result = ustringToString(ustring);
56    return true;
57}
58
59String ScriptValue::toString(ScriptState* scriptState) const
60{
61    String result = ustringToString(m_value.get().toString(scriptState));
62    // Handle the case where an exception is thrown as part of invoking toString on the object.
63    if (scriptState->hadException())
64        scriptState->clearException();
65    return result;
66}
67
68bool ScriptValue::isEqual(ScriptState* scriptState, const ScriptValue& anotherValue) const
69{
70    if (hasNoValue())
71        return anotherValue.hasNoValue();
72
73    return JSValueIsEqual(toRef(scriptState), toRef(scriptState, jsValue()), toRef(scriptState, anotherValue.jsValue()), 0);
74}
75
76bool ScriptValue::isNull() const
77{
78    if (!m_value)
79        return false;
80    return m_value.get().isNull();
81}
82
83bool ScriptValue::isUndefined() const
84{
85    if (!m_value)
86        return false;
87    return m_value.get().isUndefined();
88}
89
90bool ScriptValue::isObject() const
91{
92    if (!m_value)
93        return false;
94    return m_value.get().isObject();
95}
96
97bool ScriptValue::isFunction() const
98{
99    CallData callData;
100    return getCallData(m_value.get(), callData) != CallTypeNone;
101}
102
103PassRefPtr<SerializedScriptValue> ScriptValue::serialize(ScriptState* scriptState, SerializationErrorMode throwExceptions)
104{
105    return SerializedScriptValue::create(scriptState, jsValue(), throwExceptions);
106}
107
108ScriptValue ScriptValue::deserialize(ScriptState* scriptState, SerializedScriptValue* value, SerializationErrorMode throwExceptions)
109{
110    return ScriptValue(scriptState->globalData(), value->deserialize(scriptState, scriptState->lexicalGlobalObject(), throwExceptions));
111}
112
113#if ENABLE(INSPECTOR)
114static PassRefPtr<InspectorValue> jsToInspectorValue(ScriptState* scriptState, JSValue value)
115{
116    if (!value) {
117        ASSERT_NOT_REACHED();
118        return 0;
119    }
120    if (value.isNull() || value.isUndefined())
121        return InspectorValue::null();
122    if (value.isBoolean())
123        return InspectorBasicValue::create(value.getBoolean());
124    if (value.isNumber())
125        return InspectorBasicValue::create(value.uncheckedGetNumber());
126    if (value.isString()) {
127        UString s = value.getString(scriptState);
128        return InspectorString::create(String(s.characters(), s.length()));
129    }
130    if (value.isObject()) {
131        if (isJSArray(&scriptState->globalData(), value)) {
132            RefPtr<InspectorArray> inspectorArray = InspectorArray::create();
133            JSArray* array = asArray(value);
134            unsigned length = array->length();
135            for (unsigned i = 0; i < length; i++) {
136                JSValue element = array->getIndex(i);
137                RefPtr<InspectorValue> elementValue = jsToInspectorValue(scriptState, element);
138                if (!elementValue) {
139                    ASSERT_NOT_REACHED();
140                    elementValue = InspectorValue::null();
141                }
142                inspectorArray->pushValue(elementValue);
143            }
144            return inspectorArray;
145        }
146        RefPtr<InspectorObject> inspectorObject = InspectorObject::create();
147        JSObject* object = value.getObject();
148        PropertyNameArray propertyNames(scriptState);
149        object->getOwnPropertyNames(scriptState, propertyNames);
150        for (size_t i = 0; i < propertyNames.size(); i++) {
151            const Identifier& name =  propertyNames[i];
152            JSValue propertyValue = object->get(scriptState, name);
153            RefPtr<InspectorValue> inspectorValue = jsToInspectorValue(scriptState, propertyValue);
154            if (!inspectorValue) {
155                ASSERT_NOT_REACHED();
156                inspectorValue = InspectorValue::null();
157            }
158            inspectorObject->setValue(String(name.characters(), name.length()), inspectorValue);
159        }
160        return inspectorObject;
161    }
162    ASSERT_NOT_REACHED();
163    return 0;
164}
165
166PassRefPtr<InspectorValue> ScriptValue::toInspectorValue(ScriptState* scriptState) const
167{
168    return jsToInspectorValue(scriptState, m_value.get());
169}
170#endif // ENABLE(INSPECTOR)
171
172} // namespace WebCore
173