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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 "include/v8.h" | 8 #include "include/v8.h" |
| 9 #include "src/base/functional.h" | 9 #include "src/base/functional.h" |
| 10 #include "src/base/macros.h" | 10 #include "src/base/macros.h" |
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| 199 // Ex. MaybeHandle<JSArray> can be passed when Handle<Object> is expected. | 199 // Ex. MaybeHandle<JSArray> can be passed when Handle<Object> is expected. |
| 200 template <typename S> | 200 template <typename S> |
| 201 V8_INLINE MaybeHandle(MaybeHandle<S> maybe_handle) | 201 V8_INLINE MaybeHandle(MaybeHandle<S> maybe_handle) |
| 202 : location_(reinterpret_cast<T**>(maybe_handle.location_)) { | 202 : location_(reinterpret_cast<T**>(maybe_handle.location_)) { |
| 203 T* a = nullptr; | 203 T* a = nullptr; |
| 204 S* b = nullptr; | 204 S* b = nullptr; |
| 205 a = b; // Fake assignment to enforce type checks. | 205 a = b; // Fake assignment to enforce type checks. |
| 206 USE(a); | 206 USE(a); |
| 207 } | 207 } |
| 208 | 208 |
| 209 template <typename S> |
| 210 V8_INLINE MaybeHandle(S* object, Isolate* isolate) |
| 211 : MaybeHandle(handle(object, isolate)) {} |
| 212 |
| 209 V8_INLINE void Assert() const { DCHECK_NOT_NULL(location_); } | 213 V8_INLINE void Assert() const { DCHECK_NOT_NULL(location_); } |
| 210 V8_INLINE void Check() const { CHECK_NOT_NULL(location_); } | 214 V8_INLINE void Check() const { CHECK_NOT_NULL(location_); } |
| 211 | 215 |
| 212 V8_INLINE Handle<T> ToHandleChecked() const { | 216 V8_INLINE Handle<T> ToHandleChecked() const { |
| 213 Check(); | 217 Check(); |
| 214 return Handle<T>(location_); | 218 return Handle<T>(location_); |
| 215 } | 219 } |
| 216 | 220 |
| 217 // Convert to a Handle with a type that can be upcasted to. | 221 // Convert to a Handle with a type that can be upcasted to. |
| 218 template <typename S> | 222 template <typename S> |
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| 407 next = limit = NULL; | 411 next = limit = NULL; |
| 408 sealed_level = level = 0; | 412 sealed_level = level = 0; |
| 409 canonical_scope = NULL; | 413 canonical_scope = NULL; |
| 410 } | 414 } |
| 411 }; | 415 }; |
| 412 | 416 |
| 413 } // namespace internal | 417 } // namespace internal |
| 414 } // namespace v8 | 418 } // namespace v8 |
| 415 | 419 |
| 416 #endif // V8_HANDLES_H_ | 420 #endif // V8_HANDLES_H_ |
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