TER PathCursor::advanceNode (STAmount const& amount, bool reverse) const
{
bool multi = multiQuality_ || amount == zero;
// If the multiQuality_ is unchanged, use the PathCursor we're using now.
if (multi == multiQuality_)
return advanceNode (reverse);
// Otherwise, use a new PathCursor with the new multiQuality_.
PathCursor withMultiQuality {rippleCalc_, pathState_, multi, nodeIndex_};
return withMultiQuality.advanceNode (reverse);
}
TER PathCursor::advanceNode (STAmount const& amount, bool reverse, bool callerHasLiquidity) const
{
bool const multi = fix1141 (view ().info ().parentCloseTime)
? (multiQuality_ || (!callerHasLiquidity && amount == beast::zero))
: (multiQuality_ || amount == beast::zero);
// If the multiQuality_ is unchanged, use the PathCursor we're using now.
if (multi == multiQuality_)
return advanceNode (reverse);
// Otherwise, use a new PathCursor with the new multiQuality_.
PathCursor withMultiQuality {rippleCalc_, pathState_, multi, j_, nodeIndex_};
return withMultiQuality.advanceNode (reverse);
}
TER PathCursor::liquidity () const
{
TER resultCode = tecPATH_DRY;
PathCursor pc = *this;
pathState_.resetView (rippleCalc_.view);
for (pc.nodeIndex_ = pc.nodeSize(); pc.nodeIndex_--; )
{
JLOG (j_.trace())
<< "reverseLiquidity>"
<< " nodeIndex=" << pc.nodeIndex_
<< ".issue_.account=" << to_string (pc.node().issue_.account);
resultCode = pc.reverseLiquidity();
if (!pc.node().transferRate_)
return tefINTERNAL;
JLOG (j_.trace())
<< "reverseLiquidity< "
<< "nodeIndex=" << pc.nodeIndex_
<< " resultCode=" << transToken (resultCode)
<< " transferRate_=" << *pc.node().transferRate_
<< ": " << resultCode;
if (resultCode != tesSUCCESS)
break;
}
// VFALCO-FIXME this generates errors
// JLOG (j_.trace())
// << "nextIncrement: Path after reverse: " << pathState_.getJson ();
if (resultCode != tesSUCCESS)
return resultCode;
pathState_.resetView (rippleCalc_.view);
for (pc.nodeIndex_ = 0; pc.nodeIndex_ < pc.nodeSize(); ++pc.nodeIndex_)
{
JLOG (j_.trace())
<< "forwardLiquidity> nodeIndex=" << nodeIndex_;
resultCode = pc.forwardLiquidity();
if (resultCode != tesSUCCESS)
return resultCode;
JLOG (j_.trace())
<< "forwardLiquidity<"
<< " nodeIndex:" << pc.nodeIndex_
<< " resultCode:" << resultCode;
if (pathState_.isDry())
resultCode = tecPATH_DRY;
}
return resultCode;
}
