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author | Cory Fields <cory-nospam-@coryfields.com> | 2024-02-26 19:52:14 +0000 |
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committer | Cory Fields <cory-nospam-@coryfields.com> | 2024-02-27 19:03:26 +0000 |
commit | ad7584d8b60119ca3717117a1eb6a16d753c5d74 (patch) | |
tree | cf179d06ee94954e70553b7b840db222838c3cd9 /src/serialize.h | |
parent | 4d7d7fd123113342f09871b1a383cda1bb53d0ea (diff) | |
download | bitcoin-ad7584d8b60119ca3717117a1eb6a16d753c5d74.tar.xz |
serialization: replace char-is-int8_t autoconf detection with c++20 concept
This removes the only remaining autoconf macro in our serialization code,
so it can now be used trivially and safely out-of-tree.
Diffstat (limited to 'src/serialize.h')
-rw-r--r-- | src/serialize.h | 20 |
1 files changed, 10 insertions, 10 deletions
diff --git a/src/serialize.h b/src/serialize.h index 7b336ce1af..ab57376a57 100644 --- a/src/serialize.h +++ b/src/serialize.h @@ -6,10 +6,6 @@ #ifndef BITCOIN_SERIALIZE_H #define BITCOIN_SERIALIZE_H -#if defined(HAVE_CONFIG_H) -#include <config/bitcoin-config.h> -#endif - #include <attributes.h> #include <compat/assumptions.h> // IWYU pragma: keep #include <compat/endian.h> @@ -17,6 +13,7 @@ #include <span.h> #include <algorithm> +#include <concepts> #include <cstdint> #include <cstring> #include <ios> @@ -263,9 +260,14 @@ const Out& AsBase(const In& x) // i.e. anything that supports .read(Span<std::byte>) and .write(Span<const std::byte>) // // clang-format off -#ifndef CHAR_EQUALS_INT8 -template <typename Stream> void Serialize(Stream&, char) = delete; // char serialization forbidden. Use uint8_t or int8_t -#endif + +// Typically int8_t and char are distinct types, but some systems may define int8_t +// in terms of char. Forbid serialization of char in the typical case, but allow it if +// it's the only way to describe an int8_t. +template<class T> +concept CharNotInt8 = std::same_as<T, char> && !std::same_as<T, int8_t>; + +template <typename Stream, CharNotInt8 V> void Serialize(Stream&, V) = delete; // char serialization forbidden. Use uint8_t or int8_t template <typename Stream> void Serialize(Stream& s, std::byte a) { ser_writedata8(s, uint8_t(a)); } template<typename Stream> inline void Serialize(Stream& s, int8_t a ) { ser_writedata8(s, a); } template<typename Stream> inline void Serialize(Stream& s, uint8_t a ) { ser_writedata8(s, a); } @@ -279,9 +281,7 @@ template <typename Stream, BasicByte B, int N> void Serialize(Stream& s, const B template <typename Stream, BasicByte B, std::size_t N> void Serialize(Stream& s, const std::array<B, N>& a) { s.write(MakeByteSpan(a)); } template <typename Stream, BasicByte B> void Serialize(Stream& s, Span<B> span) { s.write(AsBytes(span)); } -#ifndef CHAR_EQUALS_INT8 -template <typename Stream> void Unserialize(Stream&, char) = delete; // char serialization forbidden. Use uint8_t or int8_t -#endif +template <typename Stream, CharNotInt8 V> void Unserialize(Stream&, V) = delete; // char serialization forbidden. Use uint8_t or int8_t template <typename Stream> void Unserialize(Stream& s, std::byte& a) { a = std::byte{ser_readdata8(s)}; } template<typename Stream> inline void Unserialize(Stream& s, int8_t& a ) { a = ser_readdata8(s); } template<typename Stream> inline void Unserialize(Stream& s, uint8_t& a ) { a = ser_readdata8(s); } |