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 "bindings/v8/ScriptValue.h"
33
34 #include "bindings/v8/ScriptScope.h"
35 #include "bindings/v8/ScriptState.h"
36 #include "bindings/v8/V8Binding.h"
37 #include "platform/JSONValues.h"
38
39 namespace WebCore {
40
~ScriptValue()41 ScriptValue::~ScriptValue()
42 {
43 }
44
getString(String & result) const45 bool ScriptValue::getString(String& result) const
46 {
47 if (hasNoValue())
48 return false;
49
50 v8::HandleScope handleScope(m_isolate);
51 v8::Handle<v8::Value> string = v8Value();
52 if (string.IsEmpty() || !string->IsString())
53 return false;
54 result = toCoreString(string.As<v8::String>());
55 return true;
56 }
57
toString() const58 String ScriptValue::toString() const
59 {
60 v8::TryCatch block;
61 v8::Handle<v8::String> string = v8Value()->ToString();
62 if (block.HasCaught())
63 return String();
64 return v8StringToWebCoreString<String>(string, DoNotExternalize);
65 }
66
v8ToJSONValue(v8::Handle<v8::Value> value,int maxDepth,v8::Isolate * isolate)67 static PassRefPtr<JSONValue> v8ToJSONValue(v8::Handle<v8::Value> value, int maxDepth, v8::Isolate* isolate)
68 {
69 if (value.IsEmpty()) {
70 ASSERT_NOT_REACHED();
71 return 0;
72 }
73
74 if (!maxDepth)
75 return 0;
76 maxDepth--;
77
78 if (value->IsNull() || value->IsUndefined())
79 return JSONValue::null();
80 if (value->IsBoolean())
81 return JSONBasicValue::create(value->BooleanValue());
82 if (value->IsNumber())
83 return JSONBasicValue::create(value->NumberValue());
84 if (value->IsString())
85 return JSONString::create(toCoreString(value.As<v8::String>()));
86 if (value->IsArray()) {
87 v8::Handle<v8::Array> array = v8::Handle<v8::Array>::Cast(value);
88 RefPtr<JSONArray> inspectorArray = JSONArray::create();
89 uint32_t length = array->Length();
90 for (uint32_t i = 0; i < length; i++) {
91 v8::Local<v8::Value> value = array->Get(v8::Int32::New(i, isolate));
92 RefPtr<JSONValue> element = v8ToJSONValue(value, maxDepth, isolate);
93 if (!element)
94 return 0;
95 inspectorArray->pushValue(element);
96 }
97 return inspectorArray;
98 }
99 if (value->IsObject()) {
100 RefPtr<JSONObject> jsonObject = JSONObject::create();
101 v8::Handle<v8::Object> object = v8::Handle<v8::Object>::Cast(value);
102 v8::Local<v8::Array> propertyNames = object->GetPropertyNames();
103 uint32_t length = propertyNames->Length();
104 for (uint32_t i = 0; i < length; i++) {
105 v8::Local<v8::Value> name = propertyNames->Get(v8::Int32::New(i, isolate));
106 // FIXME(yurys): v8::Object should support GetOwnPropertyNames
107 if (name->IsString() && !object->HasRealNamedProperty(v8::Handle<v8::String>::Cast(name)))
108 continue;
109 RefPtr<JSONValue> propertyValue = v8ToJSONValue(object->Get(name), maxDepth, isolate);
110 if (!propertyValue)
111 return 0;
112 V8TRYCATCH_FOR_V8STRINGRESOURCE_RETURN(V8StringResource<WithNullCheck>, nameString, name, 0);
113 jsonObject->setValue(nameString, propertyValue);
114 }
115 return jsonObject;
116 }
117 ASSERT_NOT_REACHED();
118 return 0;
119 }
120
toJSONValue(ScriptState * scriptState) const121 PassRefPtr<JSONValue> ScriptValue::toJSONValue(ScriptState* scriptState) const
122 {
123 v8::HandleScope handleScope(scriptState->isolate());
124 // v8::Object::GetPropertyNames() expects current context to be not null.
125 v8::Context::Scope contextScope(scriptState->context());
126 return v8ToJSONValue(v8Value(), JSONValue::maxDepth, scriptState->isolate());
127 }
128
129 } // namespace WebCore
130