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1 // Copyright 2013 The Chromium Authors. All rights reserved. | 1 // Copyright 2013 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "gin/wrappable.h" | 5 #include "gin/wrappable.h" |
6 | 6 |
7 #include "base/logging.h" | 7 #include "base/logging.h" |
8 #include "gin/object_template_builder.h" | 8 #include "gin/object_template_builder.h" |
9 #include "gin/per_isolate_data.h" | 9 #include "gin/per_isolate_data.h" |
10 | 10 |
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28 wrappable->wrapper_.Reset(); | 28 wrappable->wrapper_.Reset(); |
29 data.SetSecondPassCallback(SecondWeakCallback); | 29 data.SetSecondPassCallback(SecondWeakCallback); |
30 } | 30 } |
31 | 31 |
32 void WrappableBase::SecondWeakCallback( | 32 void WrappableBase::SecondWeakCallback( |
33 const v8::WeakCallbackInfo<WrappableBase>& data) { | 33 const v8::WeakCallbackInfo<WrappableBase>& data) { |
34 WrappableBase* wrappable = data.GetParameter(); | 34 WrappableBase* wrappable = data.GetParameter(); |
35 delete wrappable; | 35 delete wrappable; |
36 } | 36 } |
37 | 37 |
38 v8::Handle<v8::Object> WrappableBase::GetWrapperImpl(v8::Isolate* isolate, | 38 v8::Local<v8::Object> WrappableBase::GetWrapperImpl(v8::Isolate* isolate, |
39 WrapperInfo* info) { | 39 WrapperInfo* info) { |
40 if (!wrapper_.IsEmpty()) { | 40 if (!wrapper_.IsEmpty()) { |
41 return v8::Local<v8::Object>::New(isolate, wrapper_); | 41 return v8::Local<v8::Object>::New(isolate, wrapper_); |
42 } | 42 } |
43 | 43 |
44 PerIsolateData* data = PerIsolateData::From(isolate); | 44 PerIsolateData* data = PerIsolateData::From(isolate); |
45 v8::Local<v8::ObjectTemplate> templ = data->GetObjectTemplate(info); | 45 v8::Local<v8::ObjectTemplate> templ = data->GetObjectTemplate(info); |
46 if (templ.IsEmpty()) { | 46 if (templ.IsEmpty()) { |
47 templ = GetObjectTemplateBuilder(isolate).Build(); | 47 templ = GetObjectTemplateBuilder(isolate).Build(); |
48 CHECK(!templ.IsEmpty()); | 48 CHECK(!templ.IsEmpty()); |
49 data->SetObjectTemplate(info, templ); | 49 data->SetObjectTemplate(info, templ); |
50 } | 50 } |
51 CHECK_EQ(kNumberOfInternalFields, templ->InternalFieldCount()); | 51 CHECK_EQ(kNumberOfInternalFields, templ->InternalFieldCount()); |
52 v8::Handle<v8::Object> wrapper = templ->NewInstance(); | 52 v8::Local<v8::Object> wrapper = templ->NewInstance(); |
53 // |wrapper| may be empty in some extreme cases, e.g., when | 53 // |wrapper| may be empty in some extreme cases, e.g., when |
54 // Object.prototype.constructor is overwritten. | 54 // Object.prototype.constructor is overwritten. |
55 if (wrapper.IsEmpty()) { | 55 if (wrapper.IsEmpty()) { |
56 // The current wrappable object will be no longer managed by V8. Delete this | 56 // The current wrappable object will be no longer managed by V8. Delete this |
57 // now. | 57 // now. |
58 delete this; | 58 delete this; |
59 return wrapper; | 59 return wrapper; |
60 } | 60 } |
61 wrapper->SetAlignedPointerInInternalField(kWrapperInfoIndex, info); | 61 wrapper->SetAlignedPointerInInternalField(kWrapperInfoIndex, info); |
62 wrapper->SetAlignedPointerInInternalField(kEncodedValueIndex, this); | 62 wrapper->SetAlignedPointerInInternalField(kEncodedValueIndex, this); |
63 wrapper_.Reset(isolate, wrapper); | 63 wrapper_.Reset(isolate, wrapper); |
64 wrapper_.SetWeak(this, FirstWeakCallback, v8::WeakCallbackType::kParameter); | 64 wrapper_.SetWeak(this, FirstWeakCallback, v8::WeakCallbackType::kParameter); |
65 return wrapper; | 65 return wrapper; |
66 } | 66 } |
67 | 67 |
68 namespace internal { | 68 namespace internal { |
69 | 69 |
70 void* FromV8Impl(v8::Isolate* isolate, v8::Handle<v8::Value> val, | 70 void* FromV8Impl(v8::Isolate* isolate, v8::Local<v8::Value> val, |
71 WrapperInfo* wrapper_info) { | 71 WrapperInfo* wrapper_info) { |
72 if (!val->IsObject()) | 72 if (!val->IsObject()) |
73 return NULL; | 73 return NULL; |
74 v8::Handle<v8::Object> obj = v8::Handle<v8::Object>::Cast(val); | 74 v8::Local<v8::Object> obj = v8::Local<v8::Object>::Cast(val); |
75 WrapperInfo* info = WrapperInfo::From(obj); | 75 WrapperInfo* info = WrapperInfo::From(obj); |
76 | 76 |
77 // If this fails, the object is not managed by Gin. It is either a normal JS | 77 // If this fails, the object is not managed by Gin. It is either a normal JS |
78 // object that's not wrapping any external C++ object, or it is wrapping some | 78 // object that's not wrapping any external C++ object, or it is wrapping some |
79 // C++ object, but that object isn't managed by Gin (maybe Blink). | 79 // C++ object, but that object isn't managed by Gin (maybe Blink). |
80 if (!info) | 80 if (!info) |
81 return NULL; | 81 return NULL; |
82 | 82 |
83 // If this fails, the object is managed by Gin, but it's not wrapping an | 83 // If this fails, the object is managed by Gin, but it's not wrapping an |
84 // instance of the C++ class associated with wrapper_info. | 84 // instance of the C++ class associated with wrapper_info. |
85 if (info != wrapper_info) | 85 if (info != wrapper_info) |
86 return NULL; | 86 return NULL; |
87 | 87 |
88 return obj->GetAlignedPointerFromInternalField(kEncodedValueIndex); | 88 return obj->GetAlignedPointerFromInternalField(kEncodedValueIndex); |
89 } | 89 } |
90 | 90 |
91 } // namespace internal | 91 } // namespace internal |
92 | 92 |
93 } // namespace gin | 93 } // namespace gin |
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