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Add SER_READ and SER_WRITE for read/write-dependent statements

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Extracted and extended by Pieter Wuille from a comment by Russ
Yanofsky (see
https://github.com/bitcoin/bitcoin/pull/18317#discussion_r398625457).
This commit is contained in:
Russell Yanofsky 2020-03-30 15:22:07 -07:00 committed by Pieter Wuille
parent 6f9a1e5ad0
commit d06fedd1bc
1 changed files with 24 additions and 0 deletions
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24
src/serialize.h
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@ -190,6 +190,8 @@ template<typename X> const X& ReadWriteAsHelper(const X& x) { return x; }
#define READWRITE(...) (::SerReadWriteMany(s, ser_action, __VA_ARGS__))
#define READWRITEAS(type, obj) (::SerReadWriteMany(s, ser_action, ReadWriteAsHelper<type>(obj)))
#define SER_READ(obj, code) ::SerRead(s, ser_action, obj, [&](Stream& s, typename std::remove_const<Type>::type& obj) { code; })
#define SER_WRITE(obj, code) ::SerWrite(s, ser_action, obj, [&](Stream& s, const Type& obj) { code; })
/**
* Implement three methods for serializable objects. These are actually wrappers over
@ -1100,6 +1102,28 @@ inline void SerReadWriteMany(Stream& s, CSerActionUnserialize ser_action, Args&&
::UnserializeMany(s, args...);
}
template<typename Stream, typename Type, typename Fn>
inline void SerRead(Stream& s, CSerActionSerialize ser_action, Type&&, Fn&&)
{
}
template<typename Stream, typename Type, typename Fn>
inline void SerRead(Stream& s, CSerActionUnserialize ser_action, Type&& obj, Fn&& fn)
{
fn(s, std::forward<Type>(obj));
}
template<typename Stream, typename Type, typename Fn>
inline void SerWrite(Stream& s, CSerActionSerialize ser_action, Type&& obj, Fn&& fn)
{
fn(s, std::forward<Type>(obj));
}
template<typename Stream, typename Type, typename Fn>
inline void SerWrite(Stream& s, CSerActionUnserialize ser_action, Type&&, Fn&&)
{
}
template<typename I>
inline void WriteVarInt(CSizeComputer &s, I n)
{