diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/ocl/hashing/hash.hpp (renamed from include/ocl/crc32/crc32.hpp) | 45 |
1 files changed, 32 insertions, 13 deletions
diff --git a/include/ocl/crc32/crc32.hpp b/include/ocl/hashing/hash.hpp index 0ee1f8c..c64daf4 100644 --- a/include/ocl/crc32/crc32.hpp +++ b/include/ocl/hashing/hash.hpp @@ -1,6 +1,6 @@ /* - * File: crc32.hpp - * Purpose: CRC32 module. + * File: hash.hpp + * Purpose: Hashing module. * Author: Amlal El Mahrouss, * Copyright 2025, Amlal El Mahrouss, Licensed under the Boost Software License. */ @@ -9,6 +9,7 @@ #define _OCL_CRC32_HPP #include <core/config.hpp> +#include <unordered_map> #include <cstdint> #include <string> #include <cstddef> @@ -16,13 +17,13 @@ /// @brief Crc32 implementation in C++ /// @author Amlal El Mahrouss (amlal@nekernel.org) -namespace ocl::crc32 +namespace ocl { - namespace detail + struct hash_trait { - inline constexpr const std::uint16_t crc_sz_ = 256U; + static constexpr const std::uint16_t crc_sz_ = 256U; - inline std::uint32_t crc_array_[crc_sz_] = { + static constexpr std::uint32_t crc_array_[crc_sz_] = { 0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419, 0x706af48f, 0xe963a535, 0x9e6495a3, 0x0edb8832, 0x79dcb8a4, 0xe0d5e91e, 0x97d2d988, 0x09b64c2b, 0x7eb17cbd, 0xe7b82d07, 0x90bf1d91, 0x1db71064, 0x6ab020f2, 0xf3b97148, 0x84be41de, 0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7, @@ -57,7 +58,7 @@ namespace ocl::crc32 0xb3667a2e, 0xc4614ab8, 0x5d681b02, 0x2a6f2b94, 0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, 0x2d02ef8d}; template <typename buffer_type> - inline std::uint32_t + static std::uint32_t crc32(buffer_type in, size_t len) noexcept { if (!in || *in == 0) @@ -70,13 +71,31 @@ namespace ocl::crc32 return ~crc; } - } // namespace detail + }; - template <typename char_type = char> - inline std::uint32_t hash(const std::basic_string<char_type>& in) + template <typename K, typename V> + using hash_map = std::unordered_map<K, V, std::hash<ocl::hash_trait>>; +} // namespace ocl + +namespace std +{ + template <> + struct hash<ocl::hash_trait> final { - return detail::crc32<const char_type*>(in.c_str(), in.size()); - } -} // namespace ocl::crc32 + hash() = default; + ~hash() = default; + + template <typename T> + inline std::size_t operator()(T* in_) + { + return ocl::hash_trait::crc32<char*>((char*)in_, sizeof(T)); + } + + inline std::size_t operator()(const std::string& in_) + { + return ocl::hash_trait::crc32<const char*>(in_.c_str(), in_.size()); + } + }; +} // namespace std #endif // !_OCL_CRC32_HPP
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