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https://github.com/bolero-MURAKAMI/Sprout
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net.endian: resolution dependence on Boost
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bolero-MURAKAMI
parent
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commit
f2c09dd3af
139 changed files with 4800 additions and 202 deletions
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@ -13,163 +13,185 @@
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#include <cstdint>
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#include <sprout/config.hpp>
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#include <boost/detail/endian.hpp>
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#include <sprout/assert.hpp>
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#include <sprout/predef/detail/endian_compat.hpp>
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namespace sprout {
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namespace net {
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namespace detail {
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/*
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* lshift_by
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* Left shift 'val' by 'n' bytes
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*/
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template<typename T>
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SPROUT_CONSTEXPR T lshift_by(T val, std::uint_fast8_t n) {
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return val << (n * 8);
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}
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namespace net {
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namespace detail {
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/*
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* lshift_by
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* Left shift 'val' by 'n' bytes
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*/
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template<typename T>
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inline SPROUT_CONSTEXPR T
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lshift_by(T val, std::uint_fast8_t n) {
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return val << (n * 8);
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}
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/*
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* rshift_by
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* Right shift 'val' by 'n' bytes
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*/
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template<typename T>
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SPROUT_CONSTEXPR T rshift_by(T val, std::uint_fast8_t n) {
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return val >> (n * 8);
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}
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/*
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* rshift_by
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* Right shift 'val' by 'n' bytes
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*/
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template<typename T>
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inline SPROUT_CONSTEXPR T
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rshift_by(T val, std::uint_fast8_t n) {
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return val >> (n * 8);
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}
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/*
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* mask_t
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* Mask 'n'th byte
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*/
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template<typename T>
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SPROUT_CONSTEXPR T mask_at(std::uint_fast8_t n) {
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return sprout::net::detail::lshift_by(T(0xFF), n);
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}
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/*
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* mask_t
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* Mask 'n'th byte
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*/
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template<typename T>
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inline SPROUT_CONSTEXPR T
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mask_at(std::uint_fast8_t n) {
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return sprout::net::detail::lshift_by(T(0xFF), n);
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}
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/*
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* byte_at
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* Get 'n'th byte from 'val'
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*/
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template<typename T>
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SPROUT_CONSTEXPR T byte_at(T val, std::uint_fast8_t n) {
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return sprout::net::detail::rshift_by((val & sprout::net::detail::mask_at<T>(n)), n);
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}
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/*
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* byte_at
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* Get 'n'th byte from 'val'
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*/
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template<typename T>
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inline SPROUT_CONSTEXPR T
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byte_at(T val, std::uint_fast8_t n) {
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return sprout::net::detail::rshift_by((val & sprout::net::detail::mask_at<T>(n)), n);
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}
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/*
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* replace_at
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* Replace, in 'val', 'n'th byte with 'byte_val'
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*/
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template<typename T>
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SPROUT_CONSTEXPR T replace_at(T val, std::uint8_t byte_val, std::uint_fast8_t n) {
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return (val & ~sprout::net::detail::mask_at<T>(n)) | sprout::net::detail::lshift_by(T(byte_val), n);
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}
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/*
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* replace_at
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* Replace, in 'val', 'n'th byte with 'byte_val'
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*/
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template<typename T>
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inline SPROUT_CONSTEXPR T
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replace_at(T val, std::uint8_t byte_val, std::uint_fast8_t n) {
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return (val & ~sprout::net::detail::mask_at<T>(n)) | sprout::net::detail::lshift_by(T(byte_val), n);
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}
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/*
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* copy
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* Copy, in 'val', byte at index 'from' to byte at index 'to'
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*/
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template<typename T>
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SPROUT_CONSTEXPR T copy(T val, std::uint_fast8_t from, std::uint_fast8_t to) {
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return sprout::net::detail::replace_at(val, sprout::net::detail::byte_at(val, from), to);
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}
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/*
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* copy
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* Copy, in 'val', byte at index 'from' to byte at index 'to'
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*/
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template<typename T>
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inline SPROUT_CONSTEXPR T
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copy(T val, std::uint_fast8_t from, std::uint_fast8_t to) {
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return sprout::net::detail::replace_at(val, sprout::net::detail::byte_at(val, from), to);
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}
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/*
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* swap
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* Swap, in 'val', byte at index 'n1' with byte at index 'n2'
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*/
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template<typename T>
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SPROUT_CONSTEXPR T swap(T val, std::uint_fast8_t n1, std::uint_fast8_t n2) {
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return sprout::net::detail::replace_at(sprout::net::detail::copy(val, n1, n2), sprout::net::detail::byte_at(val, n2), n1);
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}
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/*
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* swap
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* Swap, in 'val', byte at index 'n1' with byte at index 'n2'
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*/
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template<typename T>
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inline SPROUT_CONSTEXPR T
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swap(T val, std::uint_fast8_t n1, std::uint_fast8_t n2) {
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return sprout::net::detail::replace_at(sprout::net::detail::copy(val, n1, n2), sprout::net::detail::byte_at(val, n2), n1);
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}
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/*
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* reverse_impl
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* Swap, in 'val', byte at index 'n1' with byte at index 'n2' in 'val', increment n1, decrement n2 until n1 > n2
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*/
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template<typename T>
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SPROUT_CONSTEXPR T reverse_impl(T val, std::uint_fast8_t n1, std::uint_fast8_t n2) {
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return n1 > n2 ? val : sprout::net::detail::reverse_impl(swap(val, n1, n2), n1 + 1, n2 - 1);
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}
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/*
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* reverse_impl
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* Swap, in 'val', byte at index 'n1' with byte at index 'n2' in 'val', increment n1, decrement n2 until n1 > n2
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*/
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template<typename T>
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inline SPROUT_CONSTEXPR T
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reverse_impl(T val, std::uint_fast8_t n1, std::uint_fast8_t n2) {
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return n1 > n2 ? val : sprout::net::detail::reverse_impl(swap(val, n1, n2), n1 + 1, n2 - 1);
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}
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/*
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* reverse
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* Reverse 'val'
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*/
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template<typename T>
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SPROUT_CONSTEXPR T reverse(T val) {
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return sprout::net::detail::reverse_impl(val, 0, sizeof(T) - 1);
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}
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/*
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* reverse
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* Reverse 'val'
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*/
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template<typename T>
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inline SPROUT_CONSTEXPR T
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reverse(T val) {
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return sprout::net::detail::reverse_impl(val, 0, sizeof(T) - 1);
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}
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/*
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* reverse_words_impl
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* Swap, in 'val', byte at index 'n' - 1 with byte at index 'n' - 2, decrement n by 2 until n == 0
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*/
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template<typename T>
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SPROUT_CONSTEXPR T reverse_words_impl(T val, std::uint_fast8_t n) {
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return n == 0 ? val : sprout::net::detail::reverse_words_impl(swap(val, n - 1, n - 2), n - 2);
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}
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/*
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* reverse_words_impl
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* Swap, in 'val', byte at index 'n' - 1 with byte at index 'n' - 2, decrement n by 2 until n == 0
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*/
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template<typename T>
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inline SPROUT_CONSTEXPR T
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reverse_words_impl(T val, std::uint_fast8_t n) {
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return n == 0 ? val : sprout::net::detail::reverse_words_impl(swap(val, n - 1, n - 2), n - 2);
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}
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/*
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* reverse_words
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* Reverse each word in 'val'
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*/
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template<typename T>
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SPROUT_CONSTEXPR T reverse_words(T val) {
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return sprout::net::detail::reverse_words_impl(val, sizeof(T));
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}
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} // namespace detail
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/*
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* reverse_words
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* Reverse each word in 'val'
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*/
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template<typename T>
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inline SPROUT_CONSTEXPR T
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reverse_words(T val) {
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return sprout::net::detail::reverse_words_impl(val, sizeof(T));
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}
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} // namespace detail
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// http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2013/n3620.pdf
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// template<>
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// constexpr unsigned-integral hton(unsigned-integral host)
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template<typename T>
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SPROUT_CONSTEXPR T hton SPROUT_PREVENT_MACRO_SUBSTITUTION (T host) {
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#if defined(BOOST_BIG_ENDIAN)
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return host;
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#elif defined(BOOST_LITTLE_ENDIAN)
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return sprout::net::detail::reverse(host);
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#elif defined(BOOST_PDP_ENDIAN)
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return sprout::net::detail::reverse_words(host);
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// http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2013/n3620.pdf
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// template<>
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// constexpr unsigned-integral hton(unsigned-integral host)
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template<typename T>
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inline SPROUT_CONSTEXPR T
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hton SPROUT_PREVENT_MACRO_SUBSTITUTION (T host) {
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#if defined(SPROUT_BIG_ENDIAN)
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return host;
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#elif defined(SPROUT_LITTLE_ENDIAN)
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return sprout::net::detail::reverse(host);
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#elif defined(SPROUT_PDP_ENDIAN)
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return sprout::net::detail::reverse_words(host);
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#else
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return SPROUT_ASSERT_MSG(0, "hton: unsupported endian"), host;
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#endif
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}
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}
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// http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2013/n3620.pdf
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// template<>
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// constexpr unsigned-integral ntoh(unsigned-integral net)
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template<typename T>
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SPROUT_CONSTEXPR T ntoh SPROUT_PREVENT_MACRO_SUBSTITUTION (T net) {
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#if defined(BOOST_BIG_ENDIAN)
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return net;
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#elif defined(BOOST_LITTLE_ENDIAN)
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return sprout::net::detail::reverse(net);
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#elif defined(BOOST_PDP_ENDIAN)
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return sprout::net::detail::reverse_words(host);
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// http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2013/n3620.pdf
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// template<>
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// constexpr unsigned-integral ntoh(unsigned-integral net)
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template<typename T>
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inline SPROUT_CONSTEXPR T
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ntoh SPROUT_PREVENT_MACRO_SUBSTITUTION (T net) {
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#if defined(SPROUT_BIG_ENDIAN)
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return net;
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#elif defined(SPROUT_LITTLE_ENDIAN)
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return sprout::net::detail::reverse(net);
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#elif defined(SPROUT_PDP_ENDIAN)
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return sprout::net::detail::reverse_words(host);
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#else
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return SPROUT_ASSERT_MSG(0, "ntoh: unsupported endian"), net;
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#endif
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}
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}
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// http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2013/n3620.pdf
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// uint32_t htonl(uint32_t host32)
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SPROUT_CONSTEXPR std::uint32_t htonl SPROUT_PREVENT_MACRO_SUBSTITUTION (std::uint32_t host32) {
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return sprout::net::hton SPROUT_PREVENT_MACRO_SUBSTITUTION (host32);
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}
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// http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2013/n3620.pdf
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// uint32_t htonl(uint32_t host32)
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inline SPROUT_CONSTEXPR std::uint32_t
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htonl SPROUT_PREVENT_MACRO_SUBSTITUTION (std::uint32_t host32) {
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return sprout::net::hton SPROUT_PREVENT_MACRO_SUBSTITUTION (host32);
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}
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// http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2013/n3620.pdf
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// uint16_t htons(uint16_t host16)
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SPROUT_CONSTEXPR std::uint16_t htons SPROUT_PREVENT_MACRO_SUBSTITUTION (std::uint16_t host16) {
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return sprout::net::hton SPROUT_PREVENT_MACRO_SUBSTITUTION (host16);
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}
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// http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2013/n3620.pdf
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// uint16_t htons(uint16_t host16)
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inline SPROUT_CONSTEXPR std::uint16_t
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htons SPROUT_PREVENT_MACRO_SUBSTITUTION (std::uint16_t host16) {
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return sprout::net::hton SPROUT_PREVENT_MACRO_SUBSTITUTION (host16);
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}
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// http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2013/n3620.pdf
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// uint32_t ntohl(uint32_t net32)
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SPROUT_CONSTEXPR std::uint32_t ntohl SPROUT_PREVENT_MACRO_SUBSTITUTION (std::uint32_t net32) {
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return sprout::net::ntoh SPROUT_PREVENT_MACRO_SUBSTITUTION (net32);
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}
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// http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2013/n3620.pdf
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// uint32_t ntohl(uint32_t net32)
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inline SPROUT_CONSTEXPR std::uint32_t
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ntohl SPROUT_PREVENT_MACRO_SUBSTITUTION (std::uint32_t net32) {
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return sprout::net::ntoh SPROUT_PREVENT_MACRO_SUBSTITUTION (net32);
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}
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// http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2013/n3620.pdf
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// uint16_t ntohs(uint32_t net16)
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SPROUT_CONSTEXPR std::uint16_t ntohs SPROUT_PREVENT_MACRO_SUBSTITUTION (std::uint16_t net16) {
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return sprout::net::ntoh SPROUT_PREVENT_MACRO_SUBSTITUTION (net16);
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}
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} //namespace net
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// http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2013/n3620.pdf
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// uint16_t ntohs(uint32_t net16)
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inline SPROUT_CONSTEXPR std::uint16_t
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ntohs SPROUT_PREVENT_MACRO_SUBSTITUTION (std::uint16_t net16) {
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return sprout::net::ntoh SPROUT_PREVENT_MACRO_SUBSTITUTION (net16);
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}
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} //namespace net
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} // namespace sprout
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#endif // #ifndef SPROUT_NET_ENDIAN_HPP
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