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https://gitee.com/openharmony/arkcompiler_runtime_core
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757889d5e3
Issue: https://gitee.com/openharmony/arkcompiler_runtime_core/issues/I687G9?from=project-issue Test: tdd Signed-off-by: shawn_hu_ls <huxiaowei3@huawei.com>
63 lines
1.8 KiB
C++
63 lines
1.8 KiB
C++
/**
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* Copyright (c) 2021-2022 Huawei Device Co., Ltd.
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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 LIBPANDABASE_UTILS_UTILS_H
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#define LIBPANDABASE_UTILS_UTILS_H
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#include <exception>
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#include <string>
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namespace panda {
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// ----------------------------------------------------------------------------
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// General helper functions
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// Returns the value (0 .. 15) of a hexadecimal character c.
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// If c is not a legal hexadecimal character, returns a value < 0.
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inline uint32_t HexValue(uint32_t c)
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{
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constexpr uint32_t BASE16 = 16;
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constexpr uint32_t BASE10 = 10;
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constexpr uint32_t MASK = 0x20;
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c -= '0';
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if (static_cast<unsigned>(c) < BASE10) {
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return c;
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}
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// NOLINTNEXTLINE(hicpp-signed-bitwise)
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c = (c | MASK) - ('a' - '0');
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if (static_cast<unsigned>(c) < (BASE16 - BASE10)) {
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return c + BASE10;
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}
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return -1;
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}
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// General helper class
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class UnreachableException : public std::exception {
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public:
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explicit UnreachableException(const char *msg) : msg_(msg) {}
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explicit UnreachableException(const std::string_view &msg) : msg_(msg) {}
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const char *what() const noexcept override
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{
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return msg_.c_str();
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}
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private:
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std::string msg_;
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};
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} // namespace panda
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#endif // LIBPANDABASE_UTILS_UTILS_H
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