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vm: make SerializeItem/DeserializeItem public APIs

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They're useful as wrappers around EncodeBinaryStackItem/DecodeBinaryStackItem.
This commit is contained in:
Roman Khimov 2020-02-07 12:16:47 +03:00
parent 7e7ce7f19f
commit b805b1a71b
3 changed files with 7 additions and 5 deletions
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4
pkg/vm/interop.go
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@ -93,7 +93,7 @@ func runtimeNotify(vm *VM) error {
// RuntimeSerialize handles syscalls System.Runtime.Serialize and Neo.Runtime.Serialize. // RuntimeSerialize handles syscalls System.Runtime.Serialize and Neo.Runtime.Serialize.
func RuntimeSerialize(vm *VM) error { func RuntimeSerialize(vm *VM) error {
item := vm.Estack().Pop() item := vm.Estack().Pop()
data, err := serializeItem(item.value) data, err := SerializeItem(item.value)
if err != nil { if err != nil {
return err return err
} else if len(data) > MaxItemSize { } else if len(data) > MaxItemSize {
@ -109,7 +109,7 @@ func RuntimeSerialize(vm *VM) error {
func RuntimeDeserialize(vm *VM) error { func RuntimeDeserialize(vm *VM) error {
data := vm.Estack().Pop().Bytes() data := vm.Estack().Pop().Bytes()
item, err := deserializeItem(data) item, err := DeserializeItem(data)
if err != nil { if err != nil {
return err return err
} }

6
pkg/vm/serialization.go
View file

@ -17,7 +17,8 @@ const (
mapT stackItemType = 0x82 mapT stackItemType = 0x82
) )
func serializeItem(item StackItem) ([]byte, error) { // SerializeItem encodes given StackItem into the byte slice.
func SerializeItem(item StackItem) ([]byte, error) {
w := io.NewBufBinWriter() w := io.NewBufBinWriter()
EncodeBinaryStackItem(item, w.BinWriter) EncodeBinaryStackItem(item, w.BinWriter)
if w.Err != nil { if w.Err != nil {
@ -78,7 +79,8 @@ func serializeItemTo(item StackItem, w *io.BinWriter, seen map[StackItem]bool) {
} }
} }
func deserializeItem(data []byte) (StackItem, error) { // DeserializeItem decodes StackItem from the given byte slice.
func DeserializeItem(data []byte) (StackItem, error) {
r := io.NewBinReaderFromBuf(data) r := io.NewBinReaderFromBuf(data)
item := DecodeBinaryStackItem(r) item := DecodeBinaryStackItem(r)
if r.Err != nil { if r.Err != nil {

2
pkg/vm/vm_test.go
View file

@ -653,7 +653,7 @@ func TestDeserializeUnknown(t *testing.T) {
prog := append(getSyscallProg("Neo.Runtime.Deserialize"), byte(opcode.RET)) prog := append(getSyscallProg("Neo.Runtime.Deserialize"), byte(opcode.RET))
vm := load(prog) vm := load(prog)
data, err := serializeItem(NewBigIntegerItem(123)) data, err := SerializeItem(NewBigIntegerItem(123))
require.NoError(t, err) require.NoError(t, err)
data[0] = 0xFF data[0] = 0xFF