d81d826bfc
Match C# implementation and fix state inconsistency at block 249920 of preview2 testnet. Make our Go Storage.Get return nil and adapt examples/tests.
93 lines
1.9 KiB
Go
93 lines
1.9 KiB
Go
package testdata
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import (
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"github.com/nspcc-dev/neo-go/pkg/interop/runtime"
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"github.com/nspcc-dev/neo-go/pkg/interop/storage"
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)
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const (
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totalSupply = 1000000
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decimals = 2
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)
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func Main(operation string, args []interface{}) interface{} {
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runtime.Notify("contract call", operation, args)
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switch operation {
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case "Put":
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ctx := storage.GetContext()
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storage.Put(ctx, args[0].([]byte), args[1].([]byte))
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return true
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case "totalSupply":
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return totalSupply
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case "decimals":
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return decimals
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case "name":
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return "Rubl"
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case "symbol":
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return "RUB"
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case "balanceOf":
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ctx := storage.GetContext()
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addr := args[0].([]byte)
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if len(addr) != 20 {
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runtime.Log("invalid address")
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return false
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}
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var amount int
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val := storage.Get(ctx, addr)
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if val != nil {
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amount = val.(int)
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}
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runtime.Notify("balanceOf", addr, amount)
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return amount
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case "transfer":
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ctx := storage.GetContext()
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from := args[0].([]byte)
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if len(from) != 20 {
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runtime.Log("invalid 'from' address")
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return false
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}
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to := args[1].([]byte)
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if len(to) != 20 {
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runtime.Log("invalid 'to' address")
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return false
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}
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amount := args[2].(int)
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if amount < 0 {
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runtime.Log("invalid amount")
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return false
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}
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var fromBalance int
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val := storage.Get(ctx, from)
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if val != nil {
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fromBalance = val.(int)
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}
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if fromBalance < amount {
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runtime.Log("insufficient funds")
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return false
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}
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fromBalance -= amount
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storage.Put(ctx, from, fromBalance)
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var toBalance int
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val = storage.Get(ctx, to)
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if val != nil {
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toBalance = val.(int)
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}
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toBalance += amount
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storage.Put(ctx, to, toBalance)
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runtime.Notify("transfer", from, to, amount)
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return true
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case "init":
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ctx := storage.GetContext()
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h := runtime.GetExecutingScriptHash()
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amount := totalSupply
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storage.Put(ctx, h, amount)
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runtime.Notify("transfer", []byte{}, h, amount)
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return true
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default:
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panic("invalid operation")
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}
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}
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