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1 // Copyright 2008 the V8 project authors. All rights reserved. | 1 // Copyright 2008 the V8 project authors. All rights reserved. |
2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
4 // met: | 4 // met: |
5 // | 5 // |
6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
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240 | 240 |
241 template <class T> | 241 template <class T> |
242 static inline T* ToApi(v8::internal::Handle<v8::internal::Object> obj) { | 242 static inline T* ToApi(v8::internal::Handle<v8::internal::Object> obj) { |
243 return reinterpret_cast<T*>(obj.location()); | 243 return reinterpret_cast<T*>(obj.location()); |
244 } | 244 } |
245 | 245 |
246 | 246 |
247 template <class T> | 247 template <class T> |
248 v8::internal::Handle<T> v8::internal::Handle<T>::EscapeFrom( | 248 v8::internal::Handle<T> v8::internal::Handle<T>::EscapeFrom( |
249 v8::HandleScope* scope) { | 249 v8::HandleScope* scope) { |
250 return Utils::OpenHandle(*scope->Close(Utils::ToLocal(*this))); | 250 v8::internal::Handle<T> handle; |
| 251 if (!is_null()) { |
| 252 handle = *this; |
| 253 } |
| 254 return Utils::OpenHandle(*scope->Close(Utils::ToLocal(handle))); |
251 } | 255 } |
252 | 256 |
253 | 257 |
254 // Implementations of ToLocal | 258 // Implementations of ToLocal |
255 | 259 |
256 #define MAKE_TO_LOCAL(Name, From, To) \ | 260 #define MAKE_TO_LOCAL(Name, From, To) \ |
257 Local<v8::To> Utils::Name(v8::internal::Handle<v8::internal::From> obj) { \ | 261 Local<v8::To> Utils::Name(v8::internal::Handle<v8::internal::From> obj) { \ |
258 ASSERT(!obj->IsTheHole()); \ | 262 ASSERT(obj.is_null() || !obj->IsTheHole()); \ |
259 return Local<To>(reinterpret_cast<To*>(obj.location())); \ | 263 return Local<To>(reinterpret_cast<To*>(obj.location())); \ |
260 } | 264 } |
261 | 265 |
262 MAKE_TO_LOCAL(ToLocal, Context, Context) | 266 MAKE_TO_LOCAL(ToLocal, Context, Context) |
263 MAKE_TO_LOCAL(ToLocal, Object, Value) | 267 MAKE_TO_LOCAL(ToLocal, Object, Value) |
264 MAKE_TO_LOCAL(ToLocal, JSFunction, Function) | 268 MAKE_TO_LOCAL(ToLocal, JSFunction, Function) |
265 MAKE_TO_LOCAL(ToLocal, String, String) | 269 MAKE_TO_LOCAL(ToLocal, String, String) |
266 MAKE_TO_LOCAL(ToLocal, JSObject, Object) | 270 MAKE_TO_LOCAL(ToLocal, JSObject, Object) |
267 MAKE_TO_LOCAL(ToLocal, JSArray, Array) | 271 MAKE_TO_LOCAL(ToLocal, JSArray, Array) |
268 MAKE_TO_LOCAL(ToLocal, Proxy, External) | 272 MAKE_TO_LOCAL(ToLocal, Proxy, External) |
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470 #ifdef DEBUG | 474 #ifdef DEBUG |
471 v8::ImplementationUtilities::ZapHandleRange( | 475 v8::ImplementationUtilities::ZapHandleRange( |
472 spare_, | 476 spare_, |
473 &spare_[kHandleBlockSize]); | 477 &spare_[kHandleBlockSize]); |
474 #endif | 478 #endif |
475 } | 479 } |
476 | 480 |
477 } } // namespace v8::internal | 481 } } // namespace v8::internal |
478 | 482 |
479 #endif // V8_API_H_ | 483 #endif // V8_API_H_ |
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