Function DecomposePeginWitness

src/pegins.cpp:551–592

}

bool DecomposePeginWitness(const CScriptWitness& witness, CAmount& value, CAsset& asset, uint256& genesis_hash, CScript& claim_script, std::variant<std::monostate, Sidechain::Bitcoin::CTransactionRef, CTransactionRef>& tx, std::variant<std::monostate, Sidechain::Bitcoin::CMerkleBlock, CMerkleBlock>& merkle_block)
{
    const auto& stack = witness.stack;

    if (stack.size() < 5) return false;

    CDataStream stream(stack[0], SER_NETWORK, PROTOCOL_VERSION);
    stream >> value;

    CAsset tmp_asset(stack[1]);
    asset = tmp_asset;

    uint256 gh(stack[2]);
    genesis_hash = gh;

    CScript s(stack[3].begin(), stack[3].end());
    claim_script = s;

    CDataStream ss_tx(stack[4], SER_NETWORK, PROTOCOL_VERSION);
    if (Params().GetConsensus().ParentChainHasPow()) {
        Sidechain::Bitcoin::CTransactionRef btc_tx;
        ss_tx >> btc_tx;
        tx = btc_tx;
    } else {
        CTransactionRef elem_tx;
        ss_tx >> elem_tx;
        tx = elem_tx;
    }

    CDataStream ss_proof(stack[5], SER_NETWORK, PROTOCOL_VERSION);
    if (Params().GetConsensus().ParentChainHasPow()) {
        Sidechain::Bitcoin::CMerkleBlock tx_proof;
        ss_proof >> tx_proof;
        merkle_block = tx_proof;
    } else {
        CMerkleBlock tx_proof;
        ss_proof >> tx_proof;
        merkle_block = tx_proof;
    }

    return true;
}