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| 1 // Copyright 2011 the V8 project authors. All rights reserved. | 1 // Copyright 2011 the V8 project 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 #ifndef V8_HANDLES_H_ | 5 #ifndef V8_HANDLES_H_ |
| 6 #define V8_HANDLES_H_ | 6 #define V8_HANDLES_H_ |
| 7 | 7 |
| 8 #include "src/objects.h" | 8 #include "src/objects.h" |
| 9 | 9 |
| 10 namespace v8 { | 10 namespace v8 { |
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| 37 template <class S> MaybeHandle(MaybeHandle<S> maybe_handle) { | 37 template <class S> MaybeHandle(MaybeHandle<S> maybe_handle) { |
| 38 #ifdef DEBUG | 38 #ifdef DEBUG |
| 39 T* a = NULL; | 39 T* a = NULL; |
| 40 S* b = NULL; | 40 S* b = NULL; |
| 41 a = b; // Fake assignment to enforce type checks. | 41 a = b; // Fake assignment to enforce type checks. |
| 42 USE(a); | 42 USE(a); |
| 43 #endif | 43 #endif |
| 44 location_ = reinterpret_cast<T**>(maybe_handle.location_); | 44 location_ = reinterpret_cast<T**>(maybe_handle.location_); |
| 45 } | 45 } |
| 46 | 46 |
| 47 INLINE(void Assert() const) { ASSERT(location_ != NULL); } | 47 INLINE(void Assert() const) { DCHECK(location_ != NULL); } |
| 48 INLINE(void Check() const) { CHECK(location_ != NULL); } | 48 INLINE(void Check() const) { CHECK(location_ != NULL); } |
| 49 | 49 |
| 50 INLINE(Handle<T> ToHandleChecked()) const { | 50 INLINE(Handle<T> ToHandleChecked()) const { |
| 51 Check(); | 51 Check(); |
| 52 return Handle<T>(location_); | 52 return Handle<T>(location_); |
| 53 } | 53 } |
| 54 | 54 |
| 55 // Convert to a Handle with a type that can be upcasted to. | 55 // Convert to a Handle with a type that can be upcasted to. |
| 56 template <class S> INLINE(bool ToHandle(Handle<S>* out)) { | 56 template <class S> INLINE(bool ToHandle(Handle<S>* out)) { |
| 57 if (location_ == NULL) { | 57 if (location_ == NULL) { |
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| 288 | 288 |
| 289 void Initialize() { | 289 void Initialize() { |
| 290 next = limit = NULL; | 290 next = limit = NULL; |
| 291 level = 0; | 291 level = 0; |
| 292 } | 292 } |
| 293 }; | 293 }; |
| 294 | 294 |
| 295 } } // namespace v8::internal | 295 } } // namespace v8::internal |
| 296 | 296 |
| 297 #endif // V8_HANDLES_H_ | 297 #endif // V8_HANDLES_H_ |
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