/**
* @param ChainState $state
* @param BlockInterface $block
* @param Headers $headers
* @param UtxoIdx $utxoIdx
* @return BlockIndex
*/
public function accept(ChainState $state, BlockInterface $block, Headers $headers, UtxoIdx $utxoIdx)
{
$bestBlock = $state->getLastBlock();
if ($bestBlock->getHash() !== $block->getHeader()->getPrevBlock()) {
throw new \RuntimeException('Blocks:accept() Block does not extend this chain!');
}
$index = $headers->accept($state, $block->getHeader());
$this->blockCheck->check($block)->checkContextual($block, $bestBlock);
//$view = $utxoIdx->fetchView($state, $block);
$view = $this->db->fetchUtxoView($block);
$flagP2sh = $this->consensus->scriptVerifyPayToScriptHash($bestBlock->getHeader()->getTimestamp());
$flags = new Flags($flagP2sh ? InterpreterInterface::VERIFY_P2SH : InterpreterInterface::VERIFY_NONE);
$nInputs = 0;
$nFees = 0;
$nSigOps = 0;
$txs = $block->getTransactions();
foreach ($block->getTransactions() as $tx) {
$nInputs += count($tx->getInputs());
$nSigOps += $this->blockCheck->getLegacySigOps($tx);
if ($nSigOps > $this->consensus->getParams()->getMaxBlockSigOps()) {
throw new \RuntimeException('Blocks::accept() - too many sigops');
}
if (!$tx->isCoinbase()) {
if ($flagP2sh) {
$nSigOps = $this->blockCheck->getP2shSigOps($view, $tx);
if ($nSigOps > $this->consensus->getParams()->getMaxBlockSigOps()) {
throw new \RuntimeException('Blocks::accept() - too many sigops');
}
}
$fee = $this->math->sub($view->getValueIn($this->math, $tx), $tx->getValueOut());
$nFees = $this->math->add($nFees, $fee);
$this->blockCheck->checkInputs($view, $tx, $index->getHeight(), $flags);
}
}
$this->blockCheck->checkCoinbaseSubsidy($txs[0], $nFees, $index->getHeight());
$this->db->insertBlock($block);
$state->updateLastBlock($index);
return $index;
}
