Method GetPubKey

src/script/descriptor.cpp:270–280

public:
    OriginPubkeyProvider(uint32_t exp_index, KeyOriginInfo info, std::unique_ptr<PubkeyProvider> provider, bool apostrophe) : PubkeyProvider(exp_index), m_origin(std::move(info)), m_provider(std::move(provider)), m_apostrophe(apostrophe) {}
    std::optional<CPubKey> GetPubKey(int pos, const SigningProvider& arg, FlatSigningProvider& out, const DescriptorCache* read_cache = nullptr, DescriptorCache* write_cache = nullptr) const override
    {
        std::optional<CPubKey> pub = m_provider->GetPubKey(pos, arg, out, read_cache, write_cache);
        if (!pub) return std::nullopt;
        Assert(out.pubkeys.contains(pub->GetID()));
        auto& [pubkey, suborigin] = out.origins[pub->GetID()];
        Assert(pubkey == *pub); // m_provider must have a valid origin by this point.
        std::copy(std::begin(m_origin.fingerprint), std::end(m_origin.fingerprint), suborigin.fingerprint);
        suborigin.path.insert(suborigin.path.begin(), m_origin.path.begin(), m_origin.path.end());
        return pub;
    }
    bool IsRange() const override { return m_provider->IsRange(); }
    size_t GetSize() const override { return m_provider->GetSize(); }
    bool IsBIP32() const override { return m_provider->IsBIP32(); }