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Return SelectionResult from SelectCoinsBnB

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Removes coins_out and value_ret has SelectCoinsBnB return a
std::optional<SelectionResult>
This commit is contained in:
Andrew Chow
2020-11-16 14:31:45 -05:00
parent a339add471
commit 60d2ca72e3
5 changed files with 60 additions and 70 deletions
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20
src/wallet/coinselection.cpp
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@@ -56,17 +56,14 @@ struct {
* bound of the range.
* @param const CAmount& cost_of_change This is the cost of creating and spending a change output.
* This plus selection_target is the upper bound of the range.
* @param std::set<CInputCoin>& out_set -> This is an output parameter for the set of CInputCoins
* that have been selected.
* @param CAmount& value_ret -> This is an output parameter for the total value of the CInputCoins
* that were selected.
* @returns The result of this coin selection algorithm, or std::nullopt
*/
static const size_t TOTAL_TRIES = 100000;
bool SelectCoinsBnB(std::vector<OutputGroup>& utxo_pool, const CAmount& selection_target, const CAmount& cost_of_change, std::set<CInputCoin>& out_set, CAmount& value_ret)
std::optional<SelectionResult> SelectCoinsBnB(std::vector<OutputGroup>& utxo_pool, const CAmount& selection_target, const CAmount& cost_of_change)
{
out_set.clear();
SelectionResult result(selection_target);
CAmount curr_value = 0;
std::vector<bool> curr_selection; // select the utxo at this index
@@ -80,7 +77,7 @@ bool SelectCoinsBnB(std::vector<OutputGroup>& utxo_pool, const CAmount& selectio
curr_available_value += utxo.GetSelectionAmount();
}
if (curr_available_value < selection_target) {
return false;
return std::nullopt;
}
// Sort the utxo_pool
@@ -156,19 +153,17 @@ bool SelectCoinsBnB(std::vector<OutputGroup>& utxo_pool, const CAmount& selectio
// Check for solution
if (best_selection.empty()) {
return false;
return std::nullopt;
}
// Set output set
value_ret = 0;
for (size_t i = 0; i < best_selection.size(); ++i) {
if (best_selection.at(i)) {
util::insert(out_set, utxo_pool.at(i).m_outputs);
value_ret += utxo_pool.at(i).m_value;
result.AddInput(utxo_pool.at(i));
}
}
return true;
return result;
}
std::optional<std::pair<std::set<CInputCoin>, CAmount>> SelectCoinsSRD(const std::vector<OutputGroup>& utxo_pool, CAmount target_value)
@@ -421,6 +416,7 @@ void SelectionResult::Clear()
void SelectionResult::AddInput(const OutputGroup& group)
{
util::insert(m_selected_inputs, group.m_outputs);
m_use_effective = !group.m_subtract_fee_outputs;
}
const std::set<CInputCoin>& SelectionResult::GetInputSet() const