/*
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* Copyright (C) 2017 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 ANDROID_VINTF_ARCH_H
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#define ANDROID_VINTF_ARCH_H
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#include <stdint.h>
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#include <string>
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#include <array>
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namespace android {
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namespace vintf {
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enum class Arch : size_t {
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ARCH_EMPTY = 0,
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ARCH_32,
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ARCH_64,
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ARCH_32_64
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};
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static const std::array<std::string, 4> gArchStrings = {
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{
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"",
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"32",
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"64",
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"32+64",
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}
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};
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inline bool has32(Arch arch) {
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return arch == Arch::ARCH_32 || arch == Arch::ARCH_32_64;
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}
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inline bool has64(Arch arch) {
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return arch == Arch::ARCH_64 || arch == Arch::ARCH_32_64;
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}
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inline constexpr Arch operator|(Arch lft, Arch rgt) {
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return static_cast<Arch>(static_cast<size_t>(lft) | static_cast<size_t>(rgt));
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}
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static_assert((Arch::ARCH_32 | Arch::ARCH_64) == Arch::ARCH_32_64, "bad Arch::operator|");
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inline Arch& operator|=(Arch& lft, Arch rgt) {
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return (lft = lft | rgt);
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}
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// Returns true if lft defines all bitnesses in rgt, otherwise false.
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inline constexpr bool contains(Arch lft, Arch rgt) {
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return !(~static_cast<size_t>(lft) & static_cast<size_t>(rgt));
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}
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static_assert(contains(Arch::ARCH_32_64, Arch::ARCH_32_64), "bad contains(Arch, Arch)");
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static_assert(contains(Arch::ARCH_32_64, Arch::ARCH_64), "bad contains(Arch, Arch)");
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static_assert(contains(Arch::ARCH_32_64, Arch::ARCH_32), "bad contains(Arch, Arch)");
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static_assert(contains(Arch::ARCH_32_64, Arch::ARCH_EMPTY), "bad contains(Arch, Arch)");
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static_assert(contains(Arch::ARCH_32, Arch::ARCH_EMPTY), "bad contains(Arch, Arch)");
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static_assert(contains(Arch::ARCH_64, Arch::ARCH_EMPTY), "bad contains(Arch, Arch)");
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static_assert(!contains(Arch::ARCH_32, Arch::ARCH_32_64), "bad contains(Arch, Arch)");
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static_assert(!contains(Arch::ARCH_64, Arch::ARCH_32_64), "bad contains(Arch, Arch)");
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static_assert(!contains(Arch::ARCH_32, Arch::ARCH_64), "bad contains(Arch, Arch)");
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static_assert(!contains(Arch::ARCH_64, Arch::ARCH_32), "bad contains(Arch, Arch)");
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static_assert(!contains(Arch::ARCH_EMPTY, Arch::ARCH_32), "bad contains(Arch, Arch)");
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static_assert(!contains(Arch::ARCH_EMPTY, Arch::ARCH_64), "bad contains(Arch, Arch)");
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} // namespace vintf
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} // namespace android
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#endif // ANDROID_VINTF_ARCH_H
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