TrueCloudLab/neoneo-go
7
0
Fork 2
Code Issues Pull requests Projects Releases Packages Wiki Activity

core: move CalculateNetworkFee to a separate package

Browse source
This commit is contained in:
Evgenii Stratonikov 2020-09-28 17:56:16 +03:00
parent d6a1a22afa
commit 9733a6f394
10 changed files with 66 additions and 55 deletions
Download patch file Download diff file Expand all files Collapse all files

32
pkg/core/util.go
View file

@ -7,7 +7,6 @@ import (
"github.com/nspcc-dev/neo-go/pkg/config"
"github.com/nspcc-dev/neo-go/pkg/config/netmode"
"github.com/nspcc-dev/neo-go/pkg/core/block"
"github.com/nspcc-dev/neo-go/pkg/core/interop/crypto"
"github.com/nspcc-dev/neo-go/pkg/core/interop/interopnames"
"github.com/nspcc-dev/neo-go/pkg/core/transaction"
"github.com/nspcc-dev/neo-go/pkg/crypto/hash"
@ -15,7 +14,6 @@ import (
"github.com/nspcc-dev/neo-go/pkg/io"
"github.com/nspcc-dev/neo-go/pkg/smartcontract"
"github.com/nspcc-dev/neo-go/pkg/util"
"github.com/nspcc-dev/neo-go/pkg/vm"
"github.com/nspcc-dev/neo-go/pkg/vm/emit"
"github.com/nspcc-dev/neo-go/pkg/vm/opcode"
)
@ -129,33 +127,3 @@ func headerSliceReverse(dest []*block.Header) {
dest[i], dest[j] = dest[j], dest[i]
}
}
// CalculateNetworkFee returns network fee for transaction
func CalculateNetworkFee(script []byte) (int64, int) {
var (
netFee int64
size int
)
if vm.IsSignatureContract(script) {
size += 67 + io.GetVarSize(script)
netFee += opcodePrice(opcode.PUSHDATA1, opcode.PUSHNULL, opcode.PUSHDATA1) + crypto.ECDSAVerifyPrice
} else if m, pubs, ok := vm.ParseMultiSigContract(script); ok {
n := len(pubs)
sizeInv := 66 * m
size += io.GetVarSize(sizeInv) + sizeInv + io.GetVarSize(script)
netFee += calculateMultisigFee(m) + calculateMultisigFee(n)
netFee += opcodePrice(opcode.PUSHNULL) + crypto.ECDSAVerifyPrice*int64(n)
} else {
// We can support more contract types in the future.
}
return netFee, size
}
func calculateMultisigFee(n int) int64 {
result := opcodePrice(opcode.PUSHDATA1) * int64(n)
bw := io.NewBufBinWriter()
emit.Int(bw.BinWriter, int64(n))
// it's a hack because prices of small PUSH* opcodes are equal
result += opcodePrice(opcode.Opcode(bw.Bytes()[0]))
return result
}