| // Copyright 2019 The Fuchsia Authors. All rights reserved. | |
| // Use of this source code is governed by a BSD-style license that can be | |
| // found in the LICENSE file. | |
| #ifndef SRC_DEVELOPER_DEBUG_ZXDB_COMMON_REF_PTR_TO_H_ | |
| #define SRC_DEVELOPER_DEBUG_ZXDB_COMMON_REF_PTR_TO_H_ | |
| #include "src/lib/fxl/memory/ref_counted.h" | |
| namespace zxdb { | |
| // Converts a ray pointer to a reference-counted type to a RefPtr. | |
| // | |
| // Const and fxl::RefPtr don't play well together so this requires an awkward const_cast. Callers | |
| // should take care to preserve the const expectation of the caller. | |
| // | |
| // In zxdb this is normally this is done for Symbol-derived classes which are const in their normal | |
| // usage anyway. | |
| // | |
| // Example: | |
| // | |
| // void Foo(const Type* type) { | |
| // fxl::RefPtr<Type> ref = RefPtrTo(type); | |
| // ... | |
| // } | |
| template <typename T> | |
| fxl::RefPtr<T> RefPtrTo(const T* pointer) { | |
| return fxl::RefPtr<T>(const_cast<T*>(pointer)); | |
| } | |
| } // namespace zxdb | |
| #endif // SRC_DEVELOPER_DEBUG_ZXDB_COMMON_REF_PTR_TO_H_ |