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core: simplify GetTransactionResults() a bit

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Make less movements.
This commit is contained in:
Roman Khimov 2020-03-06 19:26:39 +03:00
parent 0e8ff558d1
commit fe4916f691
1 changed files with 6 additions and 18 deletions
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24
pkg/core/blockchain.go
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@ -1641,36 +1641,24 @@ func (bc *Blockchain) verifyResults(t *transaction.Transaction) error {
// GetTransactionResults returns the transaction results aggregate by assetID.
// Golang of GetTransationResults method in C# (https://github.com/neo-project/neo/blob/master/neo/Network/P2P/Payloads/Transaction.cs#L207)
func (bc *Blockchain) GetTransactionResults(t *transaction.Transaction) []*transaction.Result {
var tempResults []*transaction.Result
var results []*transaction.Result
tempGroupResult := make(map[util.Uint256]util.Fixed8)
tempResult := make(map[util.Uint256]util.Fixed8)
references, err := bc.References(t)
if err != nil {
return nil
}
for _, inout := range references {
tempResults = append(tempResults, &transaction.Result{
AssetID: inout.Out.AssetID,
Amount: inout.Out.Amount,
})
c := tempResult[inout.Out.AssetID]
tempResult[inout.Out.AssetID] = c.Add(inout.Out.Amount)
}
for _, output := range t.Outputs {
tempResults = append(tempResults, &transaction.Result{
AssetID: output.AssetID,
Amount: -output.Amount,
})
}
for _, r := range tempResults {
if amount, ok := tempGroupResult[r.AssetID]; ok {
tempGroupResult[r.AssetID] = amount.Add(r.Amount)
} else {
tempGroupResult[r.AssetID] = r.Amount
}
c := tempResult[output.AssetID]
tempResult[output.AssetID] = c.Sub(output.Amount)
}
results = []*transaction.Result{} // this assignment is necessary. (Most of the time amount == 0 and results is the empty slice.)
for assetID, amount := range tempGroupResult {
for assetID, amount := range tempResult {
if amount != util.Fixed8(0) {
results = append(results, &transaction.Result{
AssetID: assetID,