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Optional required strictness for decoding #65

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25 changes: 16 additions & 9 deletions thrift/decoder.go
Original file line number Diff line number Diff line change
Expand Up @@ -15,11 +15,16 @@ type Decoder interface {
}

type decoder struct {
r ProtocolReader
r ProtocolReader
enforceRequired bool
}

// DecodeStruct tries to deserialize a struct from a Thrift stream
func DecodeStruct(r ProtocolReader, v interface{}) (err error) {
return DecodeStructWithStrictness(r, true, v)
}

func DecodeStructWithStrictness(r ProtocolReader, enforceRequired bool, v interface{}) (err error) {
if de, ok := v.(Decoder); ok {
return de.DecodeThrift(r)
}
Expand All @@ -32,7 +37,7 @@ func DecodeStruct(r ProtocolReader, v interface{}) (err error) {
err = r.(error)
}
}()
d := &decoder{r}
d := &decoder{r: r, enforceRequired: enforceRequired}
vo := reflect.ValueOf(v)
for vo.Kind() != reflect.Ptr {
d.error(&UnsupportedValueError{Value: vo, Str: "pointer to struct expected"})
Expand Down Expand Up @@ -173,13 +178,15 @@ func (d *decoder) readValue(thriftType byte, rf reflect.Value) {
d.error(err)
}

if req != 0 {
for i := 0; req != 0; i, req = i+1, req>>1 {
if req&1 != 0 {
d.error(&MissingRequiredField{
StructName: v.Type().Name(),
FieldName: meta.fields[i].name,
})
if d.enforceRequired {
if req != 0 {
for i := 0; req != 0; i, req = i+1, req>>1 {
if req&1 != 0 {
d.error(&MissingRequiredField{
StructName: v.Type().Name(),
FieldName: meta.fields[i].name,
})
}
}
}
}
Expand Down