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https://github.com/matrix-construct/construct
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ircd: Typedef a buf for sha256; improve hash related interface.
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1 changed files with 11 additions and 9 deletions
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@ -31,12 +31,12 @@ namespace ircd
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// string at compile time leaving an integer residue at runtime.
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constexpr size_t hash(const char *const &str, const size_t i = 0);
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constexpr size_t hash(const char16_t *const &str, const size_t i = 0);
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constexpr size_t hash(const std::string_view &str, const size_t i = 0);
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// Note that at runtime this hash uses multiplication on every character
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// which can consume many cycles...
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size_t hash(const std::string &str, const size_t i = 0);
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size_t hash(const std::u16string &str, const size_t i = 0);
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size_t hash(const std::string_view &str, const size_t i = 0);
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/// ircd:: reserves the $ character over a string as an alias for hash()
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template<class string>
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@ -107,6 +107,8 @@ struct ircd::crh::sha256
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256 / 8
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};
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using buf = fixed_const_raw_buffer<digest_size>;
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protected:
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std::unique_ptr<ctx> ctx;
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@ -147,14 +149,6 @@ const
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};
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}
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/// Runtime hashing of a string_view. Non-cryptographic.
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inline size_t
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ircd::hash(const std::string_view &str,
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const size_t i)
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{
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return i >= str.size()? 7681ULL : (hash(str, i+1) * 33ULL) ^ str.at(i);
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}
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/// Runtime hashing of a std::u16string (for js). Non-cryptographic.
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inline size_t
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ircd::hash(const std::u16string &str,
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@ -171,6 +165,14 @@ ircd::hash(const std::string &str,
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return i >= str.size()? 7681ULL : (hash(str, i+1) * 33ULL) ^ str.at(i);
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}
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/// Runtime hashing of a string_view. Non-cryptographic.
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constexpr size_t
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ircd::hash(const std::string_view &str,
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const size_t i)
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{
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return i >= str.size()? 7681ULL : (hash(str, i+1) * 33ULL) ^ str.at(i);
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}
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/// Compile-time hashing of a wider string literal (for js). Non-cryptographic.
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constexpr size_t
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ircd::hash(const char16_t *const &str,
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