diff options
Diffstat (limited to 'src/script')
| -rw-r--r-- | src/script/descriptor.cpp | 32 | ||||
| -rw-r--r-- | src/script/descriptor.h | 6 |
2 files changed, 21 insertions, 17 deletions
diff --git a/src/script/descriptor.cpp b/src/script/descriptor.cpp index 50119ba184..8ae0460273 100644 --- a/src/script/descriptor.cpp +++ b/src/script/descriptor.cpp @@ -335,10 +335,12 @@ public: /** Base class for all Descriptor implementations. */ class DescriptorImpl : public Descriptor { - //! Public key arguments for this descriptor (size 1 for PK, PKH, WPKH; any size of Multisig). + //! Public key arguments for this descriptor (size 1 for PK, PKH, WPKH; any size for Multisig). const std::vector<std::unique_ptr<PubkeyProvider>> m_pubkey_args; //! The sub-descriptor argument (nullptr for everything but SH and WSH). - const std::unique_ptr<DescriptorImpl> m_script_arg; + //! In doc/descriptors.m this is referred to as SCRIPT expressions sh(SCRIPT) + //! and wsh(SCRIPT), and distinct from KEY expressions and ADDR expressions. + const std::unique_ptr<DescriptorImpl> m_subdescriptor_arg; //! The string name of the descriptor function. const std::string m_name; @@ -349,10 +351,10 @@ protected: /** A helper function to construct the scripts for this descriptor. * * This function is invoked once for every CScript produced by evaluating - * m_script_arg, or just once in case m_script_arg is nullptr. + * m_subdescriptor_arg, or just once in case m_subdescriptor_arg is nullptr. * @param pubkeys The evaluations of the m_pubkey_args field. - * @param script The evaluation of m_script_arg (or nullptr when m_script_arg is nullptr). + * @param script The evaluation of m_subdescriptor_arg (or nullptr when m_subdescriptor_arg is nullptr). * @param out A FlatSigningProvider to put scripts or public keys in that are necessary to the solver. * The script arguments to this function are automatically added, as is the origin info of the provided pubkeys. * @return A vector with scriptPubKeys for this descriptor. @@ -360,12 +362,12 @@ protected: virtual std::vector<CScript> MakeScripts(const std::vector<CPubKey>& pubkeys, const CScript* script, FlatSigningProvider& out) const = 0; public: - DescriptorImpl(std::vector<std::unique_ptr<PubkeyProvider>> pubkeys, std::unique_ptr<DescriptorImpl> script, const std::string& name) : m_pubkey_args(std::move(pubkeys)), m_script_arg(std::move(script)), m_name(name) {} + DescriptorImpl(std::vector<std::unique_ptr<PubkeyProvider>> pubkeys, std::unique_ptr<DescriptorImpl> script, const std::string& name) : m_pubkey_args(std::move(pubkeys)), m_subdescriptor_arg(std::move(script)), m_name(name) {} bool IsSolvable() const override { - if (m_script_arg) { - if (!m_script_arg->IsSolvable()) return false; + if (m_subdescriptor_arg) { + if (!m_subdescriptor_arg->IsSolvable()) return false; } return true; } @@ -375,8 +377,8 @@ public: for (const auto& pubkey : m_pubkey_args) { if (pubkey->IsRange()) return true; } - if (m_script_arg) { - if (m_script_arg->IsRange()) return true; + if (m_subdescriptor_arg) { + if (m_subdescriptor_arg->IsRange()) return true; } return false; } @@ -396,10 +398,10 @@ public: } ret += std::move(tmp); } - if (m_script_arg) { + if (m_subdescriptor_arg) { if (pos++) ret += ","; std::string tmp; - if (!m_script_arg->ToStringHelper(arg, tmp, priv)) return false; + if (!m_subdescriptor_arg->ToStringHelper(arg, tmp, priv)) return false; ret += std::move(tmp); } out = std::move(ret) + ")"; @@ -428,6 +430,8 @@ public: // Construct temporary data in `entries` and `subscripts`, to avoid producing output in case of failure. for (const auto& p : m_pubkey_args) { entries.emplace_back(); + // If we have a cache, we don't need GetPubKey to compute the public key. + // Pass in nullptr to signify only origin info is desired. if (!p->GetPubKey(pos, arg, cache_read ? nullptr : &entries.back().first, entries.back().second)) return false; if (cache_read) { // Cached expanded public key exists, use it. @@ -444,9 +448,9 @@ public: } } std::vector<CScript> subscripts; - if (m_script_arg) { + if (m_subdescriptor_arg) { FlatSigningProvider subprovider; - if (!m_script_arg->ExpandHelper(pos, arg, cache_read, subscripts, subprovider, cache_write)) return false; + if (!m_subdescriptor_arg->ExpandHelper(pos, arg, cache_read, subscripts, subprovider, cache_write)) return false; out = Merge(out, subprovider); } @@ -456,7 +460,7 @@ public: pubkeys.push_back(entry.first); out.origins.emplace(entry.first.GetID(), std::make_pair<CPubKey, KeyOriginInfo>(CPubKey(entry.first), std::move(entry.second))); } - if (m_script_arg) { + if (m_subdescriptor_arg) { for (const auto& subscript : subscripts) { out.scripts.emplace(CScriptID(subscript), subscript); std::vector<CScript> addscripts = MakeScripts(pubkeys, &subscript, out); diff --git a/src/script/descriptor.h b/src/script/descriptor.h index 29915c6c92..a34e9f0d8a 100644 --- a/src/script/descriptor.h +++ b/src/script/descriptor.h @@ -47,9 +47,9 @@ struct Descriptor { * * pos: the position at which to expand the descriptor. If IsRange() is false, this is ignored. * provider: the provider to query for private keys in case of hardened derivation. - * output_script: the expanded scriptPubKeys will be put here. + * output_scripts: the expanded scriptPubKeys will be put here. * out: scripts and public keys necessary for solving the expanded scriptPubKeys will be put here (may be equal to provider). - * cache: vector which will be overwritten with cache data necessary to-evaluate the descriptor at this point without access to private keys. + * cache: vector which will be overwritten with cache data necessary to evaluate the descriptor at this point without access to private keys. */ virtual bool Expand(int pos, const SigningProvider& provider, std::vector<CScript>& output_scripts, FlatSigningProvider& out, std::vector<unsigned char>* cache = nullptr) const = 0; @@ -57,7 +57,7 @@ struct Descriptor { * * pos: the position at which to expand the descriptor. If IsRange() is false, this is ignored. * cache: vector from which cached expansion data will be read. - * output_script: the expanded scriptPubKeys will be put here. + * output_scripts: the expanded scriptPubKeys will be put here. * out: scripts and public keys necessary for solving the expanded scriptPubKeys will be put here (may be equal to provider). */ virtual bool ExpandFromCache(int pos, const std::vector<unsigned char>& cache, std::vector<CScript>& output_scripts, FlatSigningProvider& out) const = 0; |