| // Copyright 2019 The Go Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style |
| // license that can be found in the LICENSE file. |
| |
| package impl |
| |
| import ( |
| "fmt" |
| "reflect" |
| "sync" |
| |
| "google.golang.org/protobuf/encoding/protowire" |
| "google.golang.org/protobuf/internal/errors" |
| "google.golang.org/protobuf/proto" |
| pref "google.golang.org/protobuf/reflect/protoreflect" |
| preg "google.golang.org/protobuf/reflect/protoregistry" |
| piface "google.golang.org/protobuf/runtime/protoiface" |
| ) |
| |
| type errInvalidUTF8 struct{} |
| |
| func (errInvalidUTF8) Error() string { return "string field contains invalid UTF-8" } |
| func (errInvalidUTF8) InvalidUTF8() bool { return true } |
| func (errInvalidUTF8) Unwrap() error { return errors.Error } |
| |
| // initOneofFieldCoders initializes the fast-path functions for the fields in a oneof. |
| // |
| // For size, marshal, and isInit operations, functions are set only on the first field |
| // in the oneof. The functions are called when the oneof is non-nil, and will dispatch |
| // to the appropriate field-specific function as necessary. |
| // |
| // The unmarshal function is set on each field individually as usual. |
| func (mi *MessageInfo) initOneofFieldCoders(od pref.OneofDescriptor, si structInfo) { |
| fs := si.oneofsByName[od.Name()] |
| ft := fs.Type |
| oneofFields := make(map[reflect.Type]*coderFieldInfo) |
| needIsInit := false |
| fields := od.Fields() |
| for i, lim := 0, fields.Len(); i < lim; i++ { |
| fd := od.Fields().Get(i) |
| num := fd.Number() |
| // Make a copy of the original coderFieldInfo for use in unmarshaling. |
| // |
| // oneofFields[oneofType].funcs.marshal is the field-specific marshal function. |
| // |
| // mi.coderFields[num].marshal is set on only the first field in the oneof, |
| // and dispatches to the field-specific marshaler in oneofFields. |
| cf := *mi.coderFields[num] |
| ot := si.oneofWrappersByNumber[num] |
| cf.ft = ot.Field(0).Type |
| cf.mi, cf.funcs = fieldCoder(fd, cf.ft) |
| oneofFields[ot] = &cf |
| if cf.funcs.isInit != nil { |
| needIsInit = true |
| } |
| mi.coderFields[num].funcs.unmarshal = func(b []byte, p pointer, wtyp protowire.Type, f *coderFieldInfo, opts unmarshalOptions) (unmarshalOutput, error) { |
| var vw reflect.Value // pointer to wrapper type |
| vi := p.AsValueOf(ft).Elem() // oneof field value of interface kind |
| if !vi.IsNil() && !vi.Elem().IsNil() && vi.Elem().Elem().Type() == ot { |
| vw = vi.Elem() |
| } else { |
| vw = reflect.New(ot) |
| } |
| out, err := cf.funcs.unmarshal(b, pointerOfValue(vw).Apply(zeroOffset), wtyp, &cf, opts) |
| if err != nil { |
| return out, err |
| } |
| vi.Set(vw) |
| return out, nil |
| } |
| } |
| getInfo := func(p pointer) (pointer, *coderFieldInfo) { |
| v := p.AsValueOf(ft).Elem() |
| if v.IsNil() { |
| return pointer{}, nil |
| } |
| v = v.Elem() // interface -> *struct |
| if v.IsNil() { |
| return pointer{}, nil |
| } |
| return pointerOfValue(v).Apply(zeroOffset), oneofFields[v.Elem().Type()] |
| } |
| first := mi.coderFields[od.Fields().Get(0).Number()] |
| first.funcs.size = func(p pointer, _ *coderFieldInfo, opts marshalOptions) int { |
| p, info := getInfo(p) |
| if info == nil || info.funcs.size == nil { |
| return 0 |
| } |
| return info.funcs.size(p, info, opts) |
| } |
| first.funcs.marshal = func(b []byte, p pointer, _ *coderFieldInfo, opts marshalOptions) ([]byte, error) { |
| p, info := getInfo(p) |
| if info == nil || info.funcs.marshal == nil { |
| return b, nil |
| } |
| return info.funcs.marshal(b, p, info, opts) |
| } |
| first.funcs.merge = func(dst, src pointer, _ *coderFieldInfo, opts mergeOptions) { |
| srcp, srcinfo := getInfo(src) |
| if srcinfo == nil || srcinfo.funcs.merge == nil { |
| return |
| } |
| dstp, dstinfo := getInfo(dst) |
| if dstinfo != srcinfo { |
| dst.AsValueOf(ft).Elem().Set(reflect.New(src.AsValueOf(ft).Elem().Elem().Elem().Type())) |
| dstp = pointerOfValue(dst.AsValueOf(ft).Elem().Elem()).Apply(zeroOffset) |
| } |
| srcinfo.funcs.merge(dstp, srcp, srcinfo, opts) |
| } |
| if needIsInit { |
| first.funcs.isInit = func(p pointer, _ *coderFieldInfo) error { |
| p, info := getInfo(p) |
| if info == nil || info.funcs.isInit == nil { |
| return nil |
| } |
| return info.funcs.isInit(p, info) |
| } |
| } |
| } |
| |
| func makeWeakMessageFieldCoder(fd pref.FieldDescriptor) pointerCoderFuncs { |
| var once sync.Once |
| var messageType pref.MessageType |
| lazyInit := func() { |
| once.Do(func() { |
| messageName := fd.Message().FullName() |
| messageType, _ = preg.GlobalTypes.FindMessageByName(messageName) |
| }) |
| } |
| |
| return pointerCoderFuncs{ |
| size: func(p pointer, f *coderFieldInfo, opts marshalOptions) int { |
| m, ok := p.WeakFields().get(f.num) |
| if !ok { |
| return 0 |
| } |
| lazyInit() |
| if messageType == nil { |
| panic(fmt.Sprintf("weak message %v is not linked in", fd.Message().FullName())) |
| } |
| return sizeMessage(m, f.tagsize, opts) |
| }, |
| marshal: func(b []byte, p pointer, f *coderFieldInfo, opts marshalOptions) ([]byte, error) { |
| m, ok := p.WeakFields().get(f.num) |
| if !ok { |
| return b, nil |
| } |
| lazyInit() |
| if messageType == nil { |
| panic(fmt.Sprintf("weak message %v is not linked in", fd.Message().FullName())) |
| } |
| return appendMessage(b, m, f.wiretag, opts) |
| }, |
| unmarshal: func(b []byte, p pointer, wtyp protowire.Type, f *coderFieldInfo, opts unmarshalOptions) (unmarshalOutput, error) { |
| fs := p.WeakFields() |
| m, ok := fs.get(f.num) |
| if !ok { |
| lazyInit() |
| if messageType == nil { |
| return unmarshalOutput{}, errUnknown |
| } |
| m = messageType.New().Interface() |
| fs.set(f.num, m) |
| } |
| return consumeMessage(b, m, wtyp, opts) |
| }, |
| isInit: func(p pointer, f *coderFieldInfo) error { |
| m, ok := p.WeakFields().get(f.num) |
| if !ok { |
| return nil |
| } |
| return proto.CheckInitialized(m) |
| }, |
| merge: func(dst, src pointer, f *coderFieldInfo, opts mergeOptions) { |
| sm, ok := src.WeakFields().get(f.num) |
| if !ok { |
| return |
| } |
| dm, ok := dst.WeakFields().get(f.num) |
| if !ok { |
| lazyInit() |
| if messageType == nil { |
| panic(fmt.Sprintf("weak message %v is not linked in", fd.Message().FullName())) |
| } |
| dm = messageType.New().Interface() |
| dst.WeakFields().set(f.num, dm) |
| } |
| opts.Merge(dm, sm) |
| }, |
| } |
| } |
| |
| func makeMessageFieldCoder(fd pref.FieldDescriptor, ft reflect.Type) pointerCoderFuncs { |
| if mi := getMessageInfo(ft); mi != nil { |
| funcs := pointerCoderFuncs{ |
| size: sizeMessageInfo, |
| marshal: appendMessageInfo, |
| unmarshal: consumeMessageInfo, |
| merge: mergeMessage, |
| } |
| if needsInitCheck(mi.Desc) { |
| funcs.isInit = isInitMessageInfo |
| } |
| return funcs |
| } else { |
| return pointerCoderFuncs{ |
| size: func(p pointer, f *coderFieldInfo, opts marshalOptions) int { |
| m := asMessage(p.AsValueOf(ft).Elem()) |
| return sizeMessage(m, f.tagsize, opts) |
| }, |
| marshal: func(b []byte, p pointer, f *coderFieldInfo, opts marshalOptions) ([]byte, error) { |
| m := asMessage(p.AsValueOf(ft).Elem()) |
| return appendMessage(b, m, f.wiretag, opts) |
| }, |
| unmarshal: func(b []byte, p pointer, wtyp protowire.Type, f *coderFieldInfo, opts unmarshalOptions) (unmarshalOutput, error) { |
| mp := p.AsValueOf(ft).Elem() |
| if mp.IsNil() { |
| mp.Set(reflect.New(ft.Elem())) |
| } |
| return consumeMessage(b, asMessage(mp), wtyp, opts) |
| }, |
| isInit: func(p pointer, f *coderFieldInfo) error { |
| m := asMessage(p.AsValueOf(ft).Elem()) |
| return proto.CheckInitialized(m) |
| }, |
| merge: mergeMessage, |
| } |
| } |
| } |
| |
| func sizeMessageInfo(p pointer, f *coderFieldInfo, opts marshalOptions) int { |
| return protowire.SizeBytes(f.mi.sizePointer(p.Elem(), opts)) + f.tagsize |
| } |
| |
| func appendMessageInfo(b []byte, p pointer, f *coderFieldInfo, opts marshalOptions) ([]byte, error) { |
| b = protowire.AppendVarint(b, f.wiretag) |
| b = protowire.AppendVarint(b, uint64(f.mi.sizePointer(p.Elem(), opts))) |
| return f.mi.marshalAppendPointer(b, p.Elem(), opts) |
| } |
| |
| func consumeMessageInfo(b []byte, p pointer, wtyp protowire.Type, f *coderFieldInfo, opts unmarshalOptions) (out unmarshalOutput, err error) { |
| if wtyp != protowire.BytesType { |
| return out, errUnknown |
| } |
| v, n := protowire.ConsumeBytes(b) |
| if n < 0 { |
| return out, errDecode |
| } |
| if p.Elem().IsNil() { |
| p.SetPointer(pointerOfValue(reflect.New(f.mi.GoReflectType.Elem()))) |
| } |
| o, err := f.mi.unmarshalPointer(v, p.Elem(), 0, opts) |
| if err != nil { |
| return out, err |
| } |
| out.n = n |
| out.initialized = o.initialized |
| return out, nil |
| } |
| |
| func isInitMessageInfo(p pointer, f *coderFieldInfo) error { |
| return f.mi.checkInitializedPointer(p.Elem()) |
| } |
| |
| func sizeMessage(m proto.Message, tagsize int, _ marshalOptions) int { |
| return protowire.SizeBytes(proto.Size(m)) + tagsize |
| } |
| |
| func appendMessage(b []byte, m proto.Message, wiretag uint64, opts marshalOptions) ([]byte, error) { |
| b = protowire.AppendVarint(b, wiretag) |
| b = protowire.AppendVarint(b, uint64(proto.Size(m))) |
| return opts.Options().MarshalAppend(b, m) |
| } |
| |
| func consumeMessage(b []byte, m proto.Message, wtyp protowire.Type, opts unmarshalOptions) (out unmarshalOutput, err error) { |
| if wtyp != protowire.BytesType { |
| return out, errUnknown |
| } |
| v, n := protowire.ConsumeBytes(b) |
| if n < 0 { |
| return out, errDecode |
| } |
| o, err := opts.Options().UnmarshalState(piface.UnmarshalInput{ |
| Buf: v, |
| Message: m.ProtoReflect(), |
| }) |
| if err != nil { |
| return out, err |
| } |
| out.n = n |
| out.initialized = o.Flags&piface.UnmarshalInitialized != 0 |
| return out, nil |
| } |
| |
| func sizeMessageValue(v pref.Value, tagsize int, opts marshalOptions) int { |
| m := v.Message().Interface() |
| return sizeMessage(m, tagsize, opts) |
| } |
| |
| func appendMessageValue(b []byte, v pref.Value, wiretag uint64, opts marshalOptions) ([]byte, error) { |
| m := v.Message().Interface() |
| return appendMessage(b, m, wiretag, opts) |
| } |
| |
| func consumeMessageValue(b []byte, v pref.Value, _ protowire.Number, wtyp protowire.Type, opts unmarshalOptions) (pref.Value, unmarshalOutput, error) { |
| m := v.Message().Interface() |
| out, err := consumeMessage(b, m, wtyp, opts) |
| return v, out, err |
| } |
| |
| func isInitMessageValue(v pref.Value) error { |
| m := v.Message().Interface() |
| return proto.CheckInitialized(m) |
| } |
| |
| var coderMessageValue = valueCoderFuncs{ |
| size: sizeMessageValue, |
| marshal: appendMessageValue, |
| unmarshal: consumeMessageValue, |
| isInit: isInitMessageValue, |
| merge: mergeMessageValue, |
| } |
| |
| func sizeGroupValue(v pref.Value, tagsize int, opts marshalOptions) int { |
| m := v.Message().Interface() |
| return sizeGroup(m, tagsize, opts) |
| } |
| |
| func appendGroupValue(b []byte, v pref.Value, wiretag uint64, opts marshalOptions) ([]byte, error) { |
| m := v.Message().Interface() |
| return appendGroup(b, m, wiretag, opts) |
| } |
| |
| func consumeGroupValue(b []byte, v pref.Value, num protowire.Number, wtyp protowire.Type, opts unmarshalOptions) (pref.Value, unmarshalOutput, error) { |
| m := v.Message().Interface() |
| out, err := consumeGroup(b, m, num, wtyp, opts) |
| return v, out, err |
| } |
| |
| var coderGroupValue = valueCoderFuncs{ |
| size: sizeGroupValue, |
| marshal: appendGroupValue, |
| unmarshal: consumeGroupValue, |
| isInit: isInitMessageValue, |
| merge: mergeMessageValue, |
| } |
| |
| func makeGroupFieldCoder(fd pref.FieldDescriptor, ft reflect.Type) pointerCoderFuncs { |
| num := fd.Number() |
| if mi := getMessageInfo(ft); mi != nil { |
| funcs := pointerCoderFuncs{ |
| size: sizeGroupType, |
| marshal: appendGroupType, |
| unmarshal: consumeGroupType, |
| merge: mergeMessage, |
| } |
| if needsInitCheck(mi.Desc) { |
| funcs.isInit = isInitMessageInfo |
| } |
| return funcs |
| } else { |
| return pointerCoderFuncs{ |
| size: func(p pointer, f *coderFieldInfo, opts marshalOptions) int { |
| m := asMessage(p.AsValueOf(ft).Elem()) |
| return sizeGroup(m, f.tagsize, opts) |
| }, |
| marshal: func(b []byte, p pointer, f *coderFieldInfo, opts marshalOptions) ([]byte, error) { |
| m := asMessage(p.AsValueOf(ft).Elem()) |
| return appendGroup(b, m, f.wiretag, opts) |
| }, |
| unmarshal: func(b []byte, p pointer, wtyp protowire.Type, f *coderFieldInfo, opts unmarshalOptions) (unmarshalOutput, error) { |
| mp := p.AsValueOf(ft).Elem() |
| if mp.IsNil() { |
| mp.Set(reflect.New(ft.Elem())) |
| } |
| return consumeGroup(b, asMessage(mp), num, wtyp, opts) |
| }, |
| isInit: func(p pointer, f *coderFieldInfo) error { |
| m := asMessage(p.AsValueOf(ft).Elem()) |
| return proto.CheckInitialized(m) |
| }, |
| merge: mergeMessage, |
| } |
| } |
| } |
| |
| func sizeGroupType(p pointer, f *coderFieldInfo, opts marshalOptions) int { |
| return 2*f.tagsize + f.mi.sizePointer(p.Elem(), opts) |
| } |
| |
| func appendGroupType(b []byte, p pointer, f *coderFieldInfo, opts marshalOptions) ([]byte, error) { |
| b = protowire.AppendVarint(b, f.wiretag) // start group |
| b, err := f.mi.marshalAppendPointer(b, p.Elem(), opts) |
| b = protowire.AppendVarint(b, f.wiretag+1) // end group |
| return b, err |
| } |
| |
| func consumeGroupType(b []byte, p pointer, wtyp protowire.Type, f *coderFieldInfo, opts unmarshalOptions) (out unmarshalOutput, err error) { |
| if wtyp != protowire.StartGroupType { |
| return out, errUnknown |
| } |
| if p.Elem().IsNil() { |
| p.SetPointer(pointerOfValue(reflect.New(f.mi.GoReflectType.Elem()))) |
| } |
| return f.mi.unmarshalPointer(b, p.Elem(), f.num, opts) |
| } |
| |
| func sizeGroup(m proto.Message, tagsize int, _ marshalOptions) int { |
| return 2*tagsize + proto.Size(m) |
| } |
| |
| func appendGroup(b []byte, m proto.Message, wiretag uint64, opts marshalOptions) ([]byte, error) { |
| b = protowire.AppendVarint(b, wiretag) // start group |
| b, err := opts.Options().MarshalAppend(b, m) |
| b = protowire.AppendVarint(b, wiretag+1) // end group |
| return b, err |
| } |
| |
| func consumeGroup(b []byte, m proto.Message, num protowire.Number, wtyp protowire.Type, opts unmarshalOptions) (out unmarshalOutput, err error) { |
| if wtyp != protowire.StartGroupType { |
| return out, errUnknown |
| } |
| b, n := protowire.ConsumeGroup(num, b) |
| if n < 0 { |
| return out, errDecode |
| } |
| o, err := opts.Options().UnmarshalState(piface.UnmarshalInput{ |
| Buf: b, |
| Message: m.ProtoReflect(), |
| }) |
| if err != nil { |
| return out, err |
| } |
| out.n = n |
| out.initialized = o.Flags&piface.UnmarshalInitialized != 0 |
| return out, nil |
| } |
| |
| func makeMessageSliceFieldCoder(fd pref.FieldDescriptor, ft reflect.Type) pointerCoderFuncs { |
| if mi := getMessageInfo(ft); mi != nil { |
| funcs := pointerCoderFuncs{ |
| size: sizeMessageSliceInfo, |
| marshal: appendMessageSliceInfo, |
| unmarshal: consumeMessageSliceInfo, |
| merge: mergeMessageSlice, |
| } |
| if needsInitCheck(mi.Desc) { |
| funcs.isInit = isInitMessageSliceInfo |
| } |
| return funcs |
| } |
| return pointerCoderFuncs{ |
| size: func(p pointer, f *coderFieldInfo, opts marshalOptions) int { |
| return sizeMessageSlice(p, ft, f.tagsize, opts) |
| }, |
| marshal: func(b []byte, p pointer, f *coderFieldInfo, opts marshalOptions) ([]byte, error) { |
| return appendMessageSlice(b, p, f.wiretag, ft, opts) |
| }, |
| unmarshal: func(b []byte, p pointer, wtyp protowire.Type, f *coderFieldInfo, opts unmarshalOptions) (unmarshalOutput, error) { |
| return consumeMessageSlice(b, p, ft, wtyp, opts) |
| }, |
| isInit: func(p pointer, f *coderFieldInfo) error { |
| return isInitMessageSlice(p, ft) |
| }, |
| merge: mergeMessageSlice, |
| } |
| } |
| |
| func sizeMessageSliceInfo(p pointer, f *coderFieldInfo, opts marshalOptions) int { |
| s := p.PointerSlice() |
| n := 0 |
| for _, v := range s { |
| n += protowire.SizeBytes(f.mi.sizePointer(v, opts)) + f.tagsize |
| } |
| return n |
| } |
| |
| func appendMessageSliceInfo(b []byte, p pointer, f *coderFieldInfo, opts marshalOptions) ([]byte, error) { |
| s := p.PointerSlice() |
| var err error |
| for _, v := range s { |
| b = protowire.AppendVarint(b, f.wiretag) |
| siz := f.mi.sizePointer(v, opts) |
| b = protowire.AppendVarint(b, uint64(siz)) |
| b, err = f.mi.marshalAppendPointer(b, v, opts) |
| if err != nil { |
| return b, err |
| } |
| } |
| return b, nil |
| } |
| |
| func consumeMessageSliceInfo(b []byte, p pointer, wtyp protowire.Type, f *coderFieldInfo, opts unmarshalOptions) (out unmarshalOutput, err error) { |
| if wtyp != protowire.BytesType { |
| return out, errUnknown |
| } |
| v, n := protowire.ConsumeBytes(b) |
| if n < 0 { |
| return out, errDecode |
| } |
| m := reflect.New(f.mi.GoReflectType.Elem()).Interface() |
| mp := pointerOfIface(m) |
| o, err := f.mi.unmarshalPointer(v, mp, 0, opts) |
| if err != nil { |
| return out, err |
| } |
| p.AppendPointerSlice(mp) |
| out.n = n |
| out.initialized = o.initialized |
| return out, nil |
| } |
| |
| func isInitMessageSliceInfo(p pointer, f *coderFieldInfo) error { |
| s := p.PointerSlice() |
| for _, v := range s { |
| if err := f.mi.checkInitializedPointer(v); err != nil { |
| return err |
| } |
| } |
| return nil |
| } |
| |
| func sizeMessageSlice(p pointer, goType reflect.Type, tagsize int, _ marshalOptions) int { |
| s := p.PointerSlice() |
| n := 0 |
| for _, v := range s { |
| m := asMessage(v.AsValueOf(goType.Elem())) |
| n += protowire.SizeBytes(proto.Size(m)) + tagsize |
| } |
| return n |
| } |
| |
| func appendMessageSlice(b []byte, p pointer, wiretag uint64, goType reflect.Type, opts marshalOptions) ([]byte, error) { |
| s := p.PointerSlice() |
| var err error |
| for _, v := range s { |
| m := asMessage(v.AsValueOf(goType.Elem())) |
| b = protowire.AppendVarint(b, wiretag) |
| siz := proto.Size(m) |
| b = protowire.AppendVarint(b, uint64(siz)) |
| b, err = opts.Options().MarshalAppend(b, m) |
| if err != nil { |
| return b, err |
| } |
| } |
| return b, nil |
| } |
| |
| func consumeMessageSlice(b []byte, p pointer, goType reflect.Type, wtyp protowire.Type, opts unmarshalOptions) (out unmarshalOutput, err error) { |
| if wtyp != protowire.BytesType { |
| return out, errUnknown |
| } |
| v, n := protowire.ConsumeBytes(b) |
| if n < 0 { |
| return out, errDecode |
| } |
| mp := reflect.New(goType.Elem()) |
| o, err := opts.Options().UnmarshalState(piface.UnmarshalInput{ |
| Buf: v, |
| Message: asMessage(mp).ProtoReflect(), |
| }) |
| if err != nil { |
| return out, err |
| } |
| p.AppendPointerSlice(pointerOfValue(mp)) |
| out.n = n |
| out.initialized = o.Flags&piface.UnmarshalInitialized != 0 |
| return out, nil |
| } |
| |
| func isInitMessageSlice(p pointer, goType reflect.Type) error { |
| s := p.PointerSlice() |
| for _, v := range s { |
| m := asMessage(v.AsValueOf(goType.Elem())) |
| if err := proto.CheckInitialized(m); err != nil { |
| return err |
| } |
| } |
| return nil |
| } |
| |
| // Slices of messages |
| |
| func sizeMessageSliceValue(listv pref.Value, tagsize int, opts marshalOptions) int { |
| list := listv.List() |
| n := 0 |
| for i, llen := 0, list.Len(); i < llen; i++ { |
| m := list.Get(i).Message().Interface() |
| n += protowire.SizeBytes(proto.Size(m)) + tagsize |
| } |
| return n |
| } |
| |
| func appendMessageSliceValue(b []byte, listv pref.Value, wiretag uint64, opts marshalOptions) ([]byte, error) { |
| list := listv.List() |
| mopts := opts.Options() |
| for i, llen := 0, list.Len(); i < llen; i++ { |
| m := list.Get(i).Message().Interface() |
| b = protowire.AppendVarint(b, wiretag) |
| siz := proto.Size(m) |
| b = protowire.AppendVarint(b, uint64(siz)) |
| var err error |
| b, err = mopts.MarshalAppend(b, m) |
| if err != nil { |
| return b, err |
| } |
| } |
| return b, nil |
| } |
| |
| func consumeMessageSliceValue(b []byte, listv pref.Value, _ protowire.Number, wtyp protowire.Type, opts unmarshalOptions) (_ pref.Value, out unmarshalOutput, err error) { |
| list := listv.List() |
| if wtyp != protowire.BytesType { |
| return pref.Value{}, out, errUnknown |
| } |
| v, n := protowire.ConsumeBytes(b) |
| if n < 0 { |
| return pref.Value{}, out, errDecode |
| } |
| m := list.NewElement() |
| o, err := opts.Options().UnmarshalState(piface.UnmarshalInput{ |
| Buf: v, |
| Message: m.Message(), |
| }) |
| if err != nil { |
| return pref.Value{}, out, err |
| } |
| list.Append(m) |
| out.n = n |
| out.initialized = o.Flags&piface.UnmarshalInitialized != 0 |
| return listv, out, nil |
| } |
| |
| func isInitMessageSliceValue(listv pref.Value) error { |
| list := listv.List() |
| for i, llen := 0, list.Len(); i < llen; i++ { |
| m := list.Get(i).Message().Interface() |
| if err := proto.CheckInitialized(m); err != nil { |
| return err |
| } |
| } |
| return nil |
| } |
| |
| var coderMessageSliceValue = valueCoderFuncs{ |
| size: sizeMessageSliceValue, |
| marshal: appendMessageSliceValue, |
| unmarshal: consumeMessageSliceValue, |
| isInit: isInitMessageSliceValue, |
| merge: mergeMessageListValue, |
| } |
| |
| func sizeGroupSliceValue(listv pref.Value, tagsize int, opts marshalOptions) int { |
| list := listv.List() |
| n := 0 |
| for i, llen := 0, list.Len(); i < llen; i++ { |
| m := list.Get(i).Message().Interface() |
| n += 2*tagsize + proto.Size(m) |
| } |
| return n |
| } |
| |
| func appendGroupSliceValue(b []byte, listv pref.Value, wiretag uint64, opts marshalOptions) ([]byte, error) { |
| list := listv.List() |
| mopts := opts.Options() |
| for i, llen := 0, list.Len(); i < llen; i++ { |
| m := list.Get(i).Message().Interface() |
| b = protowire.AppendVarint(b, wiretag) // start group |
| var err error |
| b, err = mopts.MarshalAppend(b, m) |
| if err != nil { |
| return b, err |
| } |
| b = protowire.AppendVarint(b, wiretag+1) // end group |
| } |
| return b, nil |
| } |
| |
| func consumeGroupSliceValue(b []byte, listv pref.Value, num protowire.Number, wtyp protowire.Type, opts unmarshalOptions) (_ pref.Value, out unmarshalOutput, err error) { |
| list := listv.List() |
| if wtyp != protowire.StartGroupType { |
| return pref.Value{}, out, errUnknown |
| } |
| b, n := protowire.ConsumeGroup(num, b) |
| if n < 0 { |
| return pref.Value{}, out, errDecode |
| } |
| m := list.NewElement() |
| o, err := opts.Options().UnmarshalState(piface.UnmarshalInput{ |
| Buf: b, |
| Message: m.Message(), |
| }) |
| if err != nil { |
| return pref.Value{}, out, err |
| } |
| list.Append(m) |
| out.n = n |
| out.initialized = o.Flags&piface.UnmarshalInitialized != 0 |
| return listv, out, nil |
| } |
| |
| var coderGroupSliceValue = valueCoderFuncs{ |
| size: sizeGroupSliceValue, |
| marshal: appendGroupSliceValue, |
| unmarshal: consumeGroupSliceValue, |
| isInit: isInitMessageSliceValue, |
| merge: mergeMessageListValue, |
| } |
| |
| func makeGroupSliceFieldCoder(fd pref.FieldDescriptor, ft reflect.Type) pointerCoderFuncs { |
| num := fd.Number() |
| if mi := getMessageInfo(ft); mi != nil { |
| funcs := pointerCoderFuncs{ |
| size: sizeGroupSliceInfo, |
| marshal: appendGroupSliceInfo, |
| unmarshal: consumeGroupSliceInfo, |
| merge: mergeMessageSlice, |
| } |
| if needsInitCheck(mi.Desc) { |
| funcs.isInit = isInitMessageSliceInfo |
| } |
| return funcs |
| } |
| return pointerCoderFuncs{ |
| size: func(p pointer, f *coderFieldInfo, opts marshalOptions) int { |
| return sizeGroupSlice(p, ft, f.tagsize, opts) |
| }, |
| marshal: func(b []byte, p pointer, f *coderFieldInfo, opts marshalOptions) ([]byte, error) { |
| return appendGroupSlice(b, p, f.wiretag, ft, opts) |
| }, |
| unmarshal: func(b []byte, p pointer, wtyp protowire.Type, f *coderFieldInfo, opts unmarshalOptions) (unmarshalOutput, error) { |
| return consumeGroupSlice(b, p, num, wtyp, ft, opts) |
| }, |
| isInit: func(p pointer, f *coderFieldInfo) error { |
| return isInitMessageSlice(p, ft) |
| }, |
| merge: mergeMessageSlice, |
| } |
| } |
| |
| func sizeGroupSlice(p pointer, messageType reflect.Type, tagsize int, _ marshalOptions) int { |
| s := p.PointerSlice() |
| n := 0 |
| for _, v := range s { |
| m := asMessage(v.AsValueOf(messageType.Elem())) |
| n += 2*tagsize + proto.Size(m) |
| } |
| return n |
| } |
| |
| func appendGroupSlice(b []byte, p pointer, wiretag uint64, messageType reflect.Type, opts marshalOptions) ([]byte, error) { |
| s := p.PointerSlice() |
| var err error |
| for _, v := range s { |
| m := asMessage(v.AsValueOf(messageType.Elem())) |
| b = protowire.AppendVarint(b, wiretag) // start group |
| b, err = opts.Options().MarshalAppend(b, m) |
| if err != nil { |
| return b, err |
| } |
| b = protowire.AppendVarint(b, wiretag+1) // end group |
| } |
| return b, nil |
| } |
| |
| func consumeGroupSlice(b []byte, p pointer, num protowire.Number, wtyp protowire.Type, goType reflect.Type, opts unmarshalOptions) (out unmarshalOutput, err error) { |
| if wtyp != protowire.StartGroupType { |
| return out, errUnknown |
| } |
| b, n := protowire.ConsumeGroup(num, b) |
| if n < 0 { |
| return out, errDecode |
| } |
| mp := reflect.New(goType.Elem()) |
| o, err := opts.Options().UnmarshalState(piface.UnmarshalInput{ |
| Buf: b, |
| Message: asMessage(mp).ProtoReflect(), |
| }) |
| if err != nil { |
| return out, err |
| } |
| p.AppendPointerSlice(pointerOfValue(mp)) |
| out.n = n |
| out.initialized = o.Flags&piface.UnmarshalInitialized != 0 |
| return out, nil |
| } |
| |
| func sizeGroupSliceInfo(p pointer, f *coderFieldInfo, opts marshalOptions) int { |
| s := p.PointerSlice() |
| n := 0 |
| for _, v := range s { |
| n += 2*f.tagsize + f.mi.sizePointer(v, opts) |
| } |
| return n |
| } |
| |
| func appendGroupSliceInfo(b []byte, p pointer, f *coderFieldInfo, opts marshalOptions) ([]byte, error) { |
| s := p.PointerSlice() |
| var err error |
| for _, v := range s { |
| b = protowire.AppendVarint(b, f.wiretag) // start group |
| b, err = f.mi.marshalAppendPointer(b, v, opts) |
| if err != nil { |
| return b, err |
| } |
| b = protowire.AppendVarint(b, f.wiretag+1) // end group |
| } |
| return b, nil |
| } |
| |
| func consumeGroupSliceInfo(b []byte, p pointer, wtyp protowire.Type, f *coderFieldInfo, opts unmarshalOptions) (unmarshalOutput, error) { |
| if wtyp != protowire.StartGroupType { |
| return unmarshalOutput{}, errUnknown |
| } |
| m := reflect.New(f.mi.GoReflectType.Elem()).Interface() |
| mp := pointerOfIface(m) |
| out, err := f.mi.unmarshalPointer(b, mp, f.num, opts) |
| if err != nil { |
| return out, err |
| } |
| p.AppendPointerSlice(mp) |
| return out, nil |
| } |
| |
| func asMessage(v reflect.Value) pref.ProtoMessage { |
| if m, ok := v.Interface().(pref.ProtoMessage); ok { |
| return m |
| } |
| return legacyWrapMessage(v).Interface() |
| } |