1/*
2 * Copyright (C) 2008, 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 "ScriptValue.h"
33
34#include "InspectorValues.h"
35#include "ScriptScope.h"
36#include "SerializedScriptValue.h"
37#include "V8Binding.h"
38
39namespace WebCore {
40
41PassRefPtr<SerializedScriptValue> ScriptValue::serialize(ScriptState* scriptState)
42{
43    ScriptScope scope(scriptState);
44    return SerializedScriptValue::create(v8Value());
45}
46
47ScriptValue ScriptValue::deserialize(ScriptState* scriptState, SerializedScriptValue* value)
48{
49    ScriptScope scope(scriptState);
50    return ScriptValue(value->deserialize());
51}
52
53bool ScriptValue::getString(String& result) const
54{
55    if (m_value.IsEmpty())
56        return false;
57
58    if (!m_value->IsString())
59        return false;
60
61    result = toWebCoreString(m_value);
62    return true;
63}
64
65String ScriptValue::toString(ScriptState*) const
66{
67    v8::TryCatch block;
68    v8::Handle<v8::String> s = m_value->ToString();
69    // Handle the case where an exception is thrown as part of invoking toString on the object.
70    if (block.HasCaught())
71        return String();
72    return v8StringToWebCoreString<String>(s, DoNotExternalize);
73}
74
75#if ENABLE(INSPECTOR)
76static PassRefPtr<InspectorValue> v8ToInspectorValue(v8::Handle<v8::Value> value)
77{
78    if (value.IsEmpty()) {
79        ASSERT_NOT_REACHED();
80        return 0;
81    }
82    if (value->IsNull() || value->IsUndefined())
83        return InspectorValue::null();
84    if (value->IsBoolean())
85        return InspectorBasicValue::create(value->BooleanValue());
86    if (value->IsNumber())
87        return InspectorBasicValue::create(value->NumberValue());
88    if (value->IsString())
89        return InspectorString::create(toWebCoreString(value));
90    if (value->IsArray()) {
91        v8::Handle<v8::Array> array = v8::Handle<v8::Array>::Cast(value);
92        RefPtr<InspectorArray> inspectorArray = InspectorArray::create();
93        uint32_t length = array->Length();
94        for (uint32_t i = 0; i < length; i++) {
95            v8::Local<v8::Value> value = array->Get(v8::Int32::New(i));
96            RefPtr<InspectorValue> element = v8ToInspectorValue(value);
97            if (!element) {
98                ASSERT_NOT_REACHED();
99                element = InspectorValue::null();
100            }
101            inspectorArray->pushValue(element);
102        }
103        return inspectorArray;
104    }
105    if (value->IsObject()) {
106        RefPtr<InspectorObject> inspectorObject = InspectorObject::create();
107        v8::Handle<v8::Object> object = v8::Handle<v8::Object>::Cast(value);
108        v8::Local<v8::Array> propertyNames = object->GetPropertyNames();
109        uint32_t length = propertyNames->Length();
110        for (uint32_t i = 0; i < length; i++) {
111            v8::Local<v8::Value> name = propertyNames->Get(v8::Int32::New(i));
112            // FIXME(yurys): v8::Object should support GetOwnPropertyNames
113            if (name->IsString() && !object->HasRealNamedProperty(v8::Handle<v8::String>::Cast(name)))
114                continue;
115            RefPtr<InspectorValue> propertyValue = v8ToInspectorValue(object->Get(name));
116            if (!propertyValue) {
117                ASSERT_NOT_REACHED();
118                continue;
119            }
120            inspectorObject->setValue(toWebCoreStringWithNullCheck(name), propertyValue);
121        }
122        return inspectorObject;
123    }
124    ASSERT_NOT_REACHED();
125    return 0;
126}
127
128PassRefPtr<InspectorValue> ScriptValue::toInspectorValue(ScriptState* scriptState) const
129{
130    v8::HandleScope handleScope;
131    // v8::Object::GetPropertyNames() expects current context to be not null.
132    v8::Context::Scope contextScope(scriptState->context());
133    return v8ToInspectorValue(m_value);
134}
135#endif
136
137} // namespace WebCore
138