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-rw-r--r--src/script/descriptor.cpp36
1 files changed, 20 insertions, 16 deletions
diff --git a/src/script/descriptor.cpp b/src/script/descriptor.cpp
index 50119ba184..327af62a4f 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);
@@ -488,9 +492,9 @@ public:
if (!p->GetPrivKey(pos, provider, key)) continue;
out.keys.emplace(key.GetPubKey().GetID(), key);
}
- if (m_script_arg) {
+ if (m_subdescriptor_arg) {
FlatSigningProvider subprovider;
- m_script_arg->ExpandPrivate(pos, provider, subprovider);
+ m_subdescriptor_arg->ExpandPrivate(pos, provider, subprovider);
out = Merge(out, subprovider);
}
}