[#23] balance: Support NEP-17
Signed-off-by: Alex Vanin <alexey@nspcc.ru>
This commit is contained in:
Alex Vanin
Alex Vanin
parent
29f2f0ef17
commit
3875003b2e
2 changed files with 29 additions and 36 deletions
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@ -1,6 +1,7 @@
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package balancecontract
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import (
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"github.com/nspcc-dev/neo-go/pkg/interop"
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"github.com/nspcc-dev/neo-go/pkg/interop/binary"
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"github.com/nspcc-dev/neo-go/pkg/interop/blockchain"
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"github.com/nspcc-dev/neo-go/pkg/interop/contract"
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@ -24,8 +25,6 @@ type (
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// Token holds all token info.
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Token struct {
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// Token name
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Name string
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// Ticker symbol
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Symbol string
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// Amount of decimals
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@ -46,7 +45,6 @@ type (
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)
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const (
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name = "NeoFS Balance"
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symbol = "NEOFS"
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decimals = 12
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circulation = "MainnetGAS"
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@ -70,7 +68,6 @@ var (
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// CreateToken initializes the Token Interface for the Smart Contract to operate with.
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func CreateToken() Token {
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return Token{
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Name: name,
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Symbol: symbol,
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Decimals: decimals,
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CirculationKey: circulation,
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@ -101,10 +98,6 @@ func Init(addrNetmap, addrContainer []byte) {
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runtime.Log("balance contract initialized")
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}
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func Name() string {
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return token.Name
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}
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func Symbol() string {
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return token.Symbol
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}
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@ -117,15 +110,15 @@ func TotalSupply() int {
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return token.getSupply(ctx)
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}
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func BalanceOf(holder []byte) interface{} {
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return token.balanceOf(ctx, holder)
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func BalanceOf(account interop.Hash160) int {
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return token.balanceOf(ctx, account)
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}
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func Transfer(from, to []byte, amount int) bool {
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func Transfer(from, to interop.Hash160, amount int, data interface{}) bool {
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return token.transfer(ctx, from, to, amount, false, nil)
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}
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func TransferX(from, to []byte, amount int, details []byte) bool {
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func TransferX(from, to interop.Hash160, amount int, details []byte) bool {
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var (
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n int // number of votes for inner ring invoke
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hashTxID []byte // ballot key of the inner ring invocation
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@ -166,7 +159,7 @@ func TransferX(from, to []byte, amount int, details []byte) bool {
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return false
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}
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func Lock(txID, from, to []byte, amount, until int) bool {
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func Lock(txID []byte, from, to interop.Hash160, amount, until int) bool {
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netmapContractAddr := storage.Get(ctx, netmapContractKey).([]byte)
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innerRing := contract.Call(netmapContractAddr, "innerRingList").([]irNode)
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threshold := len(innerRing)/3*2 + 1
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@ -243,7 +236,7 @@ func NewEpoch(epochNum int) bool {
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return true
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}
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func Mint(to []byte, amount int, details []byte) bool {
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func Mint(to interop.Hash160, amount int, details []byte) bool {
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netmapContractAddr := storage.Get(ctx, netmapContractKey).([]byte)
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innerRing := contract.Call(netmapContractAddr, "innerRingList").([]irNode)
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threshold := len(innerRing)/3*2 + 1
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@ -274,7 +267,7 @@ func Mint(to []byte, amount int, details []byte) bool {
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return true
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}
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func Burn(from []byte, amount int, details []byte) bool {
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func Burn(from interop.Hash160, amount int, details []byte) bool {
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netmapContractAddr := storage.Get(ctx, netmapContractKey).([]byte)
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innerRing := contract.Call(netmapContractAddr, "innerRingList").([]irNode)
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threshold := len(innerRing)/3*2 + 1
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@ -324,13 +317,13 @@ func (t Token) getSupply(ctx storage.Context) int {
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}
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// BalanceOf gets the token balance of a specific address.
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func (t Token) balanceOf(ctx storage.Context, holder []byte) interface{} {
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func (t Token) balanceOf(ctx storage.Context, holder interop.Hash160) int {
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acc := getAccount(ctx, holder)
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return acc.Balance
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}
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func (t Token) transfer(ctx storage.Context, from []byte, to []byte, amount int, innerRing bool, details []byte) bool {
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func (t Token) transfer(ctx storage.Context, from, to interop.Hash160, amount int, innerRing bool, details []byte) bool {
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amountFrom, ok := t.canTransfer(ctx, from, to, amount, innerRing)
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if !ok {
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return false
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@ -351,14 +344,14 @@ func (t Token) transfer(ctx storage.Context, from []byte, to []byte, amount int,
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setSerialized(ctx, to, amountTo)
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}
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runtime.Notify("transfer", from, to, amount)
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runtime.Notify("transferX", from, to, amount, details)
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runtime.Notify("Transfer", from, to, amount)
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runtime.Notify("TransferX", from, to, amount, details)
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return true
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}
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// canTransfer returns the amount it can transfer.
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func (t Token) canTransfer(ctx storage.Context, from []byte, to []byte, amount int, innerRing bool) (Account, bool) {
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func (t Token) canTransfer(ctx storage.Context, from, to interop.Hash160, amount int, innerRing bool) (Account, bool) {
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var (
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emptyAcc = Account{}
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)
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@ -383,7 +376,7 @@ func (t Token) canTransfer(ctx storage.Context, from []byte, to []byte, amount i
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}
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// isUsableAddress checks if the sender is either the correct NEO address or SC address.
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func isUsableAddress(addr []byte) bool {
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func isUsableAddress(addr interop.Hash160) bool {
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if len(addr) == 20 {
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if runtime.CheckWitness(addr) {
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return true
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@ -527,11 +520,8 @@ func bytesEqual(a []byte, b []byte) bool {
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smart-contracts, that will be set up at `Init` method.
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*/
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func fromKnownContract(caller []byte) bool {
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func fromKnownContract(caller interop.Hash160) bool {
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containerContractAddr := storage.Get(ctx, containerContractKey).([]byte)
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if bytesEqual(caller, containerContractAddr) {
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return true
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}
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return false
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return bytesEqual(caller, containerContractAddr)
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}
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@ -1,32 +1,35 @@
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hasstorage: true
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ispayable: false
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name: "NeoFS Balance"
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supportedstandards: ["NEP-17"]
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safemethods: ["balanceOf", "decimals", "symbol", "totalSupply"]
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events:
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- name: Lock
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parameters:
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- name: txID
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type: ByteArray
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- name: from
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type: ByteArray
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type: Hash160
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- name: to
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type: ByteArray
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type: Hash160
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- name: amount
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type: Integer
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- name: until
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type: Integer
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- name: transfer
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- name: Transfer
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parameters:
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- name: from
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type: ByteArray
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type: Hash160
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- name: to
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type: ByteArray
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type: Hash160
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- name: amount
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type: Integer
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- name: transferX
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- name: TransferX
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parameters:
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- name: from
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type: ByteArray
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type: Hash160
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- name: to
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type: ByteArray
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type: Hash160
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- name: amount
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type: Integer
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- name: details
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@ -34,12 +37,12 @@ events:
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- name: Mint
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parameters:
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- name: from
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type: ByteArray
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type: Hash160
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- name: amount
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type: Integer
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- name: Burn
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parameters:
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- name: to
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type: ByteArray
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type: Hash160
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- name: amount
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type: Integer
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