package testdata import ( "github.com/nspcc-dev/neo-go/pkg/interop/runtime" "github.com/nspcc-dev/neo-go/pkg/interop/storage" ) const ( totalSupply = 1000000 decimals = 2 ) func Main(operation string, args []interface{}) interface{} { runtime.Notify("contract call", operation, args) switch operation { case "Put": ctx := storage.GetContext() storage.Put(ctx, args[0].([]byte), args[1].([]byte)) return true case "totalSupply": return totalSupply case "decimals": return decimals case "name": return "Rubl" case "symbol": return "RUB" case "balanceOf": ctx := storage.GetContext() addr := args[0].([]byte) if len(addr) != 20 { runtime.Log("invalid address") return false } var amount int val := storage.Get(ctx, addr) if val != nil { amount = val.(int) } runtime.Notify("balanceOf", addr, amount) return amount case "transfer": ctx := storage.GetContext() from := args[0].([]byte) if len(from) != 20 { runtime.Log("invalid 'from' address") return false } to := args[1].([]byte) if len(to) != 20 { runtime.Log("invalid 'to' address") return false } amount := args[2].(int) if amount < 0 { runtime.Log("invalid amount") return false } var fromBalance int val := storage.Get(ctx, from) if val != nil { fromBalance = val.(int) } if fromBalance < amount { runtime.Log("insufficient funds") return false } fromBalance -= amount storage.Put(ctx, from, fromBalance) var toBalance int val = storage.Get(ctx, to) if val != nil { toBalance = val.(int) } toBalance += amount storage.Put(ctx, to, toBalance) runtime.Notify("transfer", from, to, amount) return true case "init": ctx := storage.GetContext() h := runtime.GetExecutingScriptHash() amount := totalSupply storage.Put(ctx, h, amount) runtime.Notify("transfer", []byte{}, h, amount) return true default: panic("invalid operation") } }