49 lines
1.8 KiB
C
49 lines
1.8 KiB
C
/*
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* Copyright (C) 2015 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef TNT_FILAMENT_UPCAST_H
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#define TNT_FILAMENT_UPCAST_H
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/*
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* Generates functions to safely upcast a pointer Bar* to FBar*
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* FILAMENT_UPCAST() should be included in the header file
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* declaring FBar, e.g.:
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*
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* #include <Bar.h>
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*
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* class FBar : public Bar {
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* };
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*
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* FILAMENT_UPCAST(Bar)
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*
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*/
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#define FILAMENT_UPCAST(CLASS) \
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inline F##CLASS& upcast(CLASS& that) noexcept { \
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return static_cast<F##CLASS &>(that); \
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} \
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inline const F##CLASS& upcast(const CLASS& that) noexcept { \
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return static_cast<const F##CLASS &>(that); \
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} \
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inline F##CLASS* upcast(CLASS* that) noexcept { \
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return static_cast<F##CLASS *>(that); \
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} \
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inline F##CLASS const* upcast(CLASS const* that) noexcept { \
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return static_cast<F##CLASS const *>(that); \
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}
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#endif // TNT_FILAMENT_UPCAST_H
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