Function opDup

protocol/txvm/data.go:15–22

(vm *VM)

var ErrInt = errorf("invalid varint")

func opDup(vm *VM) {
	item, ok := vm.peek().(Data)
	if !ok {
		panic(errors.WithData(ErrType, "want", "Data"))
	}
	vm.chargeCopy(item)
	vm.push(item)
}

func opDrop(vm *VM) {
	item := vm.pop()