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Implement enhanced Ticket support:

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Tickets are a mechanism to allow for the "out-of-order" execution of
transactions on the XRP Ledger.

This commit, if merged, reworks the existing support for tickets and
introduces support for 'ticket batching', completing the feature set
needed for tickets.

The code is gated under the newly-introduced `TicketBatch` amendment
and the `Tickets` amendment, which is not presently active on the
network, is being removed.

The specification for this change can be found at:
https://github.com/xrp-community/standards-drafts/issues/16
This commit is contained in:
Scott Schurr
2018-10-18 18:43:02 -07:00
committed by Nik Bougalis
parent 01bd5a2646
commit 7724cca384
101 changed files with 6337 additions and 2287 deletions
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22
src/ripple/app/tx/impl/CreateOffer.cpp
View File

@@ -29,12 +29,15 @@
namespace ripple {
XRPAmount
CreateOffer::calculateMaxSpend(STTx const& tx)
TxConsequences
CreateOffer::makeTxConsequences(PreflightContext const& ctx)
{
auto const& saTakerGets = tx[sfTakerGets];
auto calculateMaxXRPSpend = [](STTx const& tx) -> XRPAmount {
auto const& amount{tx[sfTakerGets]};
return amount.native() ? amount.xrp() : beast::zero;
};
return saTakerGets.native() ? saTakerGets.xrp() : beast::zero;
return TxConsequences{ctx.tx, calculateMaxXRPSpend(ctx.tx)};
}
NotTEC
@@ -1143,10 +1146,9 @@ CreateOffer::applyGuts(Sandbox& sb, Sandbox& sbCancel)
auto const cancelSequence = ctx_.tx[~sfOfferSequence];
// FIXME understand why we use SequenceNext instead of current transaction
// sequence to determine the transaction. Why is the offer sequence
// number insufficient?
auto const uSequence = ctx_.tx.getSequence();
// Note that we we use the value from the sequence or ticket as the
// offer sequence. For more explanation see comments in SeqProxy.h.
auto const offerSequence = ctx_.tx.getSeqProxy().value();
// This is the original rate of the offer, and is the rate at which
// it will be placed, even if crossing offers change the amounts that
@@ -1373,7 +1375,7 @@ CreateOffer::applyGuts(Sandbox& sb, Sandbox& sbCancel)
}
// We need to place the remainder of the offer into its order book.
auto const offer_index = keylet::offer(account_, uSequence);
auto const offer_index = keylet::offer(account_, offerSequence);
// Add offer to owner's directory.
auto const ownerNode = sb.dirInsert(
@@ -1415,7 +1417,7 @@ CreateOffer::applyGuts(Sandbox& sb, Sandbox& sbCancel)
auto sleOffer = std::make_shared<SLE>(offer_index);
sleOffer->setAccountID(sfAccount, account_);
sleOffer->setFieldU32(sfSequence, uSequence);
sleOffer->setFieldU32(sfSequence, offerSequence);
sleOffer->setFieldH256(sfBookDirectory, dir.key);
sleOffer->setFieldAmount(sfTakerPays, saTakerPays);
sleOffer->setFieldAmount(sfTakerGets, saTakerGets);