Differential D8394 Diff 25735 src/script/descriptor.cpp

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src/script/descriptor.cpp

Show First 20 Lines • Show All 101 Lines • ▼ Show 20 Lines	uint64_t PolyMod(uint64_t c, int val) {
}		}
if (c0 & 16) {		if (c0 & 16) {
c ^= 0x644d626ffd;		c ^= 0x644d626ffd;
}		}
return c;		return c;
}		}

std::string DescriptorChecksum(const Span<const char> &span) {		std::string DescriptorChecksum(const Span<const char> &span) {
/** A character set designed such that:		/**
		* A character set designed such that:
* - The most common 'unprotected' descriptor characters (hex, keypaths)		* - The most common 'unprotected' descriptor characters (hex, keypaths)
* are in the first group of 32.		* are in the first group of 32.
* - Case errors cause an offset that's a multiple of 32.		* - Case errors cause an offset that's a multiple of 32.
* - As many alphabetic characters are in the same group (while following		* - As many alphabetic characters are in the same group (while following
* the above restrictions).		* the above restrictions).
*		*
* If p(x) gives the position of a character c in this character set, every		* If p(x) gives the position of a character c in this character set, every
* group of 3 characters (a,b,c) is encoded as the 4 symbols (p(a) & 31,		* group of 3 characters (a,b,c) is encoded as the 4 symbols (p(a) & 31,
* p(b) & 31, p(c) & 31, (p(a) / 32) + 3 * (p(b) / 32) + 9 * (p(c) / 32).		* p(b) & 31, p(c) & 31, (p(a) / 32) + 3 * (p(b) / 32) + 9 * (p(c) / 32).
* This means that changes that only affect the lower 5 bits of the		* This means that changes that only affect the lower 5 bits of the
* position, or only the higher 2 bits, will just affect a single symbol.		* position, or only the higher 2 bits, will just affect a single symbol.
*		*
* As a result, within-group-of-32 errors count as 1 symbol, as do		* As a result, within-group-of-32 errors count as 1 symbol, as do
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protected:		protected:
//! Return a serialization of anything except pubkey and script arguments,		//! Return a serialization of anything except pubkey and script arguments,
//! to be prepended to those.		//! to be prepended to those.
virtual std::string ToStringExtra() const { return ""; }		virtual std::string ToStringExtra() const { return ""; }

/**		/**
* A helper function to construct the scripts for this descriptor.		* A helper function to construct the scripts for this descriptor.
*		*
* This function is invoked once for every CScript produced by evaluating		* This function is invoked once for every CScript produced by evaluating
* m_subdescriptor_arg, or just once in case m_subdescriptor_arg is		* m_subdescriptor_arg, or just once in case m_subdescriptor_arg is nullptr.
nullptr.		*

* @param pubkeys The evaluations of the m_pubkey_args field.		* @param pubkeys The evaluations of the m_pubkey_args field.
* @param script The evaluation of m_subdescriptor_arg (or nullptr when		* @param script The evaluation of m_subdescriptor_arg (or nullptr when
m_subdescriptor_arg is nullptr).		* m_subdescriptor_arg is nullptr).
* @param out A FlatSigningProvider to put scripts or public keys in that		* @param out A FlatSigningProvider to put scripts or public keys in that
are necessary to the solver.		* are necessary to the solver. The script arguments to this
* The script arguments to this function are automatically		* function are automatically added, as is the origin info of the
added, as is the origin info of the provided pubkeys.		* provided pubkeys.
* @return A vector with scriptPubKeys for this descriptor.		* @return A vector with scriptPubKeys for this descriptor.
*/		*/
virtual std::vector<CScript>		virtual std::vector<CScript>
MakeScripts(const std::vector<CPubKey> &pubkeys, const CScript *script,		MakeScripts(const std::vector<CPubKey> &pubkeys, const CScript *script,
FlatSigningProvider &out) const = 0;		FlatSigningProvider &out) const = 0;

public:		public:
DescriptorImpl(std::vector<std::unique_ptr<PubkeyProvider>> pubkeys,		DescriptorImpl(std::vector<std::unique_ptr<PubkeyProvider>> pubkeys,
std::unique_ptr<DescriptorImpl> script,		std::unique_ptr<DescriptorImpl> script,
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