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https://github.com/openharmony/ark_runtime_core.git
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wanyanglan
14c9021696
Signed-off-by: wanyanglan <wanyanglan1@huawei.com> Change-Id: I2564094cef9c6c41263e37faf9ffbbec14223dc7
78 lines
2.4 KiB
C++
78 lines
2.4 KiB
C++
/*
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* Copyright (c) 2021 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 PANDA_LIBPANDABASE_UTILS_HASH_BASE_H_
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#define PANDA_LIBPANDABASE_UTILS_HASH_BASE_H_
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#include <array>
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#include <cstdint>
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#include <cstdlib>
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#include <macros.h>
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namespace panda {
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// Superclass for all hash classes. Defines interfaces for hash methods.
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template <typename HashImpl>
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class HashBase {
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public:
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/**
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* \brief Create 32 bits Hash from \param key via \param seed.
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* @param key - a key which should be hashed
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* @param len - length of the key in bytes
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* @param seed - seed which is used to calculate hash
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* @return 32 bits hash
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*/
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static uint32_t GetHash32WithSeed(const uint8_t *key, size_t len, uint32_t seed)
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{
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return HashImpl::GetHash32WithSeedImpl(key, len, seed);
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}
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/**
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* \brief Create 32 bits Hash from \param key.
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* @param key - a key which should be hashed
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* @param len - length of the key in bytes
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* @return 32 bits hash
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*/
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static uint32_t GetHash32(const uint8_t *key, size_t len)
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{
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return HashImpl::GetHash32Impl(key, len);
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}
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/**
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* \brief Create 32 bits Hash from MUTF8 \param string.
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* @param string - a pointer to the MUTF8 string
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* @return 32 bits hash
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*/
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static uint32_t GetHash32String(const uint8_t *mutf8_string)
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{
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return HashImpl::GetHash32StringImpl(mutf8_string);
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}
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/**
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* \brief Create 32 bits Hash from MUTF8 \param string.
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* @param string - a pointer to the MUTF8 string
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* @param seed - seed which is used to calculate hash
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* @return 32 bits hash
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*/
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static uint32_t GetHash32StringWithSeed(const uint8_t *mutf8_string, uint32_t seed)
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{
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return HashImpl::GetHash32StringWithSeedImpl(mutf8_string, seed);
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}
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};
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} // namespace panda
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#endif // PANDA_LIBPANDABASE_UTILS_HASH_BASE_H_
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