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83 lines
1.7 KiB
C++
83 lines
1.7 KiB
C++
#include <xrpl/ledger/ReadView.h>
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#include <xrpl/basics/base_uint.h>
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#include <xrpl/beast/hash/uhash.h>
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#include <xrpl/ledger/detail/ReadViewFwdRange.h>
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#include <xrpl/protocol/Indexes.h>
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#include <xrpl/protocol/Keylet.h>
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#include <xrpl/protocol/Rules.h>
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#include <xrpl/protocol/SField.h>
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#include <optional>
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#include <unordered_set>
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namespace xrpl {
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ReadView::sles_type::sles_type(ReadView const& view) : ReadViewFwdRange(view)
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{
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}
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auto
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ReadView::sles_type::begin() const -> iterator
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{
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return iterator(view_, view_->slesBegin());
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}
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auto
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ReadView::sles_type::end() const -> iterator
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{
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return iterator(view_, view_->slesEnd());
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}
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auto
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ReadView::sles_type::upper_bound(key_type const& key) const -> iterator
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{
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return iterator(view_, view_->slesUpperBound(key));
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}
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ReadView::txs_type::txs_type(ReadView const& view) : ReadViewFwdRange(view)
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{
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}
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bool
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ReadView::txs_type::empty() const
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{
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return begin() == end();
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}
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auto
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ReadView::txs_type::begin() const -> iterator
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{
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return iterator(view_, view_->txsBegin());
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}
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auto
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ReadView::txs_type::end() const -> iterator
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{
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return iterator(view_, view_->txsEnd());
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}
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Rules
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makeRulesGivenLedger(DigestAwareReadView const& ledger, Rules const& current)
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{
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return makeRulesGivenLedger(ledger, current.presets());
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}
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Rules
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makeRulesGivenLedger(
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DigestAwareReadView const& ledger,
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std::unordered_set<uint256, beast::uhash<>> const& presets)
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{
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Keylet const k = keylet::amendments();
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std::optional const digest = ledger.digest(k.key);
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if (digest)
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{
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auto const sle = ledger.read(k);
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if (sle)
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return Rules(presets, digest, sle->getFieldV256(sfAmendments));
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}
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return Rules(presets);
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}
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} // namespace xrpl
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