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Diffstat (limited to 'runtime/reflective_reference.h')
-rw-r--r-- | runtime/reflective_reference.h | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/runtime/reflective_reference.h b/runtime/reflective_reference.h new file mode 100644 index 0000000000..f57c0301bc --- /dev/null +++ b/runtime/reflective_reference.h @@ -0,0 +1,71 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#ifndef ART_RUNTIME_REFLECTIVE_REFERENCE_H_ +#define ART_RUNTIME_REFLECTIVE_REFERENCE_H_ + +#include "android-base/macros.h" +#include "base/macros.h" +#include "mirror/object_reference.h" + +namespace art { + +class ArtField; +class ArtMethod; +// A reference to a ArtField or ArtMethod. +template <class ReflectiveType> +class ReflectiveReference { + public: + static_assert(std::is_same_v<ReflectiveType, ArtMethod> || + std::is_same_v<ReflectiveType, ArtField>, + "Uknown type!"); + ReflectiveReference() : val_(nullptr) {} + explicit ReflectiveReference(ReflectiveType* r) : val_(r) {} + ReflectiveReference<ReflectiveType>& operator=(const ReflectiveReference<ReflectiveType>& t) = + default; + + ReflectiveType* Ptr() { + return val_; + } + + void Assign(ReflectiveType* r) { + val_ = r; + } + + bool IsNull() const { + return val_ == nullptr; + } + + bool operator==(const ReflectiveReference<ReflectiveType>& rr) const { + return val_ == rr.val_; + } + bool operator!=(const ReflectiveReference<ReflectiveType>& rr) const { + return !operator==(rr); + } + bool operator==(std::nullptr_t) const { + return IsNull(); + } + bool operator!=(std::nullptr_t) const { + return !IsNull(); + } + + private: + ReflectiveType* val_; +}; + +} // namespace art + +#endif // ART_RUNTIME_REFLECTIVE_REFERENCE_H_ |