feat: implement endian conversion utilities #196
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src/iceberg/util/endian.h
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| /// \brief Concept for values that can be converted to/from another endian format. | ||
| template <typename T> | ||
| concept EndianConvertible = std::is_arithmetic_v<T> && !std::same_as<T, bool>; |
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Sizeof(bool) is 1 byte, and endianness is irrelevant for single-byte data types; a byte-swap is a no-op.
Also, according to the Iceberg specification, a boolean is represented as 0x00 for false and any non-zero byte for true. This definition is inherently independent of endianness, which is different from multi-byte types like int or double, where the specification explicitly defines the value as being stored in a particular endian format .
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What about char? There is a sizeof(T) <= 1 branch, so maybe treat bool the same.
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What about char? There is a
sizeof(T) <= 1branch, so maybe treat bool the same.
I see your point, but I think performing an endian conversion on a bool is semantically less reasonable. The main benefit of the current design is that it explicitly catches this kind of logical error at compile time.
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If we don't support bool here, users may need to special case bool to avoid passing it to ByteSwap. For simplicity, should we support bool as well?
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src/iceberg/util/endian.h
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| /// \brief Concept for values that can be converted to/from another endian format. | ||
| template <typename T> | ||
| concept EndianConvertible = std::is_arithmetic_v<T> && !std::same_as<T, bool>; |
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If we don't support bool here, users may need to special case bool to avoid passing it to ByteSwap. For simplicity, should we support bool as well?
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@wgtmac I've updated the code to address the feedback from the review. Thank you. |
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Thanks for adding this @HeartLinked, and thanks for the review all! 🙌
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Implements cross-platform endianness conversion utilities in
src/iceberg/util/endian.hwith full support for integer and floating-point types, including comprehensive test coverage.