neoneo-go/pkg/vm/interop.go

52 lines
1.2 KiB
Go

package vm
import (
"errors"
"fmt"
)
// InteropFunc allows to hook into the VM.
type InteropFunc func(vm *VM) error
// runtimeLog handles the syscall "Neo.Runtime.Log" for printing and logging stuff.
func runtimeLog(vm *VM) error {
item := vm.Estack().Pop()
fmt.Printf("NEO-GO-VM (log) > %s\n", item.Value())
return nil
}
// runtimeNotify handles the syscall "Neo.Runtime.Notify" for printing and logging stuff.
func runtimeNotify(vm *VM) error {
item := vm.Estack().Pop()
fmt.Printf("NEO-GO-VM (notify) > %s\n", item.Value())
return nil
}
// RuntimeSerialize handles syscalls System.Runtime.Serialize and Neo.Runtime.Serialize.
func RuntimeSerialize(vm *VM) error {
item := vm.Estack().Pop()
data, err := serializeItem(item.value)
if err != nil {
return err
} else if len(data) > MaxItemSize {
return errors.New("too big item")
}
vm.Estack().PushVal(data)
return nil
}
// RuntimeDeserialize handles syscalls System.Runtime.Deserialize and Neo.Runtime.Deserialize.
func RuntimeDeserialize(vm *VM) error {
data := vm.Estack().Pop().Bytes()
item, err := deserializeItem(data)
if err != nil {
return err
}
vm.Estack().Push(&Element{value: item})
return nil
}