flatten 20260225

tjp/core/hash/Hash.h

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+// TJP COPYRIGHT HEADER
+
+#pragma once
+
+#include <tjp/core/types/Types.h>
+
+namespace tjp {
+namespace core {
+
+u32 hash32(const u8 *begin, size_t size);
+u64 hash64(const u8 *begin, size_t size);
+
+template<typename T>
+T hash(const u8 *begin, size_t size);
+
+template<typename T, typename U>
+T hash_of(const U &u)
+{
+	auto *begin_ = u.data();
+	auto *end_ = begin_ + u.size();
+	
+	auto *begin = (u8 *)begin_;
+	auto *end = (u8 *)end_;
+	
+	return hash<T>(begin, (end - begin));
+}
+
+template<typename T, typename U>
+T hash_of_value(const U &u)
+{
+	auto *begin_ = &u;
+	auto *end_ = begin_ + sizeof(u);
+	
+	auto *begin = (u8 *)begin_;
+	auto *end = (u8 *)end_;
+	
+	return hash<T>(begin, (end - begin));
+}
+
+template<>
+inline
+u32 hash<u32>(const u8 *begin, size_t size) { return hash32(begin, size); }
+
+template<>
+inline
+s32 hash<s32>(const u8 *begin, size_t size) { return hash32(begin, size); }
+
+template<>
+inline
+u64 hash<u64>(const u8 *begin, size_t size) { return hash64(begin, size); }
+
+template<>
+inline
+s64 hash<s64>(const u8 *begin, size_t size) { return hash64(begin, size); }
+
+} // namespace
+} // namespace
+