本文整理汇总了C++中boost::optional::issue方法的典型用法代码示例。如果您正苦于以下问题：C++ optional::issue方法的具体用法？C++ optional::issue怎么用？C++ optional::issue使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类boost::optional的用法示例。
在下文中一共展示了optional::issue方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: Issue
path::RippleCalc::Output
flow (
PaymentSandbox& sb,
STAmount const& deliver,
AccountID const& src,
AccountID const& dst,
STPathSet const& paths,
bool defaultPaths,
bool partialPayment,
bool ownerPaysTransferFee,
boost::optional<Quality> const& limitQuality,
boost::optional<STAmount> const& sendMax,
beast::Journal j,
path::detail::FlowDebugInfo* flowDebugInfo)
{
Issue const srcIssue = [&] {
if (sendMax)
return sendMax->issue ();
if (!isXRP (deliver.issue ().currency))
return Issue (deliver.issue ().currency, src);
return xrpIssue ();
}();
Issue const dstIssue = deliver.issue ();
boost::optional<Issue> sendMaxIssue;
if (sendMax)
sendMaxIssue = sendMax->issue ();
// convert the paths to a collection of strands. Each strand is the collection
// of account->account steps and book steps that may be used in this payment.
auto sr = toStrands (sb, src, dst, dstIssue, sendMaxIssue, paths,
defaultPaths, ownerPaysTransferFee, j);
if (sr.first != tesSUCCESS)
{
path::RippleCalc::Output result;
result.setResult (sr.first);
return result;
}
auto& strands = sr.second;
if (j.trace())
{
j.trace() << "\nsrc: " << src << "\ndst: " << dst
<< "\nsrcIssue: " << srcIssue << "\ndstIssue: " << dstIssue;
j.trace() << "\nNumStrands: " << strands.size ();
for (auto const& curStrand : strands)
{
j.trace() << "NumSteps: " << curStrand.size ();
for (auto const& step : curStrand)
{
j.trace() << '\n' << *step << '\n';
}
}
}
const bool srcIsXRP = isXRP (srcIssue.currency);
const bool dstIsXRP = isXRP (dstIssue.currency);
auto const asDeliver = toAmountSpec (deliver);
// The src account may send either xrp or iou. The dst account may receive
// either xrp or iou. Since XRP and IOU amounts are represented by different
// types, use templates to tell `flow` about the amount types.
if (srcIsXRP && dstIsXRP)
{
return finishFlow (sb, srcIssue, dstIssue,
flow<XRPAmount, XRPAmount> (
sb, strands, asDeliver.xrp, defaultPaths, partialPayment,
limitQuality, sendMax, j, flowDebugInfo));
}
if (srcIsXRP && !dstIsXRP)
{
return finishFlow (sb, srcIssue, dstIssue,
flow<XRPAmount, IOUAmount> (
sb, strands, asDeliver.iou, defaultPaths, partialPayment,
limitQuality, sendMax, j, flowDebugInfo));
}
if (!srcIsXRP && dstIsXRP)
{
return finishFlow (sb, srcIssue, dstIssue,
flow<IOUAmount, XRPAmount> (
sb, strands, asDeliver.xrp, defaultPaths, partialPayment,
limitQuality, sendMax, j, flowDebugInfo));
}
assert (!srcIsXRP && !dstIsXRP);
return finishFlow (sb, srcIssue, dstIssue,
flow<IOUAmount, IOUAmount> (
sb, strands, asDeliver.iou, defaultPaths, partialPayment,
limitQuality, sendMax, j, flowDebugInfo));
}