diff options
Diffstat (limited to 'vendor/google.golang.org/protobuf/internal/impl/codec_message_opaque.go')
-rw-r--r-- | vendor/google.golang.org/protobuf/internal/impl/codec_message_opaque.go | 156 |
1 files changed, 156 insertions, 0 deletions
diff --git a/vendor/google.golang.org/protobuf/internal/impl/codec_message_opaque.go b/vendor/google.golang.org/protobuf/internal/impl/codec_message_opaque.go new file mode 100644 index 000000000..88c16ae5b --- /dev/null +++ b/vendor/google.golang.org/protobuf/internal/impl/codec_message_opaque.go @@ -0,0 +1,156 @@ +// Copyright 2024 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" + "sort" + + "google.golang.org/protobuf/encoding/protowire" + "google.golang.org/protobuf/internal/encoding/messageset" + "google.golang.org/protobuf/internal/order" + "google.golang.org/protobuf/reflect/protoreflect" + piface "google.golang.org/protobuf/runtime/protoiface" +) + +func (mi *MessageInfo) makeOpaqueCoderMethods(t reflect.Type, si opaqueStructInfo) { + mi.sizecacheOffset = si.sizecacheOffset + mi.unknownOffset = si.unknownOffset + mi.unknownPtrKind = si.unknownType.Kind() == reflect.Ptr + mi.extensionOffset = si.extensionOffset + mi.lazyOffset = si.lazyOffset + mi.presenceOffset = si.presenceOffset + + mi.coderFields = make(map[protowire.Number]*coderFieldInfo) + fields := mi.Desc.Fields() + for i := 0; i < fields.Len(); i++ { + fd := fields.Get(i) + + fs := si.fieldsByNumber[fd.Number()] + if fd.ContainingOneof() != nil && !fd.ContainingOneof().IsSynthetic() { + fs = si.oneofsByName[fd.ContainingOneof().Name()] + } + ft := fs.Type + var wiretag uint64 + if !fd.IsPacked() { + wiretag = protowire.EncodeTag(fd.Number(), wireTypes[fd.Kind()]) + } else { + wiretag = protowire.EncodeTag(fd.Number(), protowire.BytesType) + } + var fieldOffset offset + var funcs pointerCoderFuncs + var childMessage *MessageInfo + switch { + case fd.ContainingOneof() != nil && !fd.ContainingOneof().IsSynthetic(): + fieldOffset = offsetOf(fs, mi.Exporter) + case fd.IsWeak(): + fieldOffset = si.weakOffset + funcs = makeWeakMessageFieldCoder(fd) + case fd.Message() != nil && !fd.IsMap(): + fieldOffset = offsetOf(fs, mi.Exporter) + if fd.IsList() { + childMessage, funcs = makeOpaqueRepeatedMessageFieldCoder(fd, ft) + } else { + childMessage, funcs = makeOpaqueMessageFieldCoder(fd, ft) + } + default: + fieldOffset = offsetOf(fs, mi.Exporter) + childMessage, funcs = fieldCoder(fd, ft) + } + cf := &coderFieldInfo{ + num: fd.Number(), + offset: fieldOffset, + wiretag: wiretag, + ft: ft, + tagsize: protowire.SizeVarint(wiretag), + funcs: funcs, + mi: childMessage, + validation: newFieldValidationInfo(mi, si.structInfo, fd, ft), + isPointer: (fd.Cardinality() == protoreflect.Repeated || + fd.Kind() == protoreflect.MessageKind || + fd.Kind() == protoreflect.GroupKind), + isRequired: fd.Cardinality() == protoreflect.Required, + presenceIndex: noPresence, + } + + // TODO: Use presence for all fields. + // + // In some cases, such as maps, presence means only "might be set" rather + // than "is definitely set", but every field should have a presence bit to + // permit us to skip over definitely-unset fields at marshal time. + + var hasPresence bool + hasPresence, cf.isLazy = usePresenceForField(si, fd) + + if hasPresence { + cf.presenceIndex, mi.presenceSize = presenceIndex(mi.Desc, fd) + } + + mi.orderedCoderFields = append(mi.orderedCoderFields, cf) + mi.coderFields[cf.num] = cf + } + for i, oneofs := 0, mi.Desc.Oneofs(); i < oneofs.Len(); i++ { + if od := oneofs.Get(i); !od.IsSynthetic() { + mi.initOneofFieldCoders(od, si.structInfo) + } + } + if messageset.IsMessageSet(mi.Desc) { + if !mi.extensionOffset.IsValid() { + panic(fmt.Sprintf("%v: MessageSet with no extensions field", mi.Desc.FullName())) + } + if !mi.unknownOffset.IsValid() { + panic(fmt.Sprintf("%v: MessageSet with no unknown field", mi.Desc.FullName())) + } + mi.isMessageSet = true + } + sort.Slice(mi.orderedCoderFields, func(i, j int) bool { + return mi.orderedCoderFields[i].num < mi.orderedCoderFields[j].num + }) + + var maxDense protoreflect.FieldNumber + for _, cf := range mi.orderedCoderFields { + if cf.num >= 16 && cf.num >= 2*maxDense { + break + } + maxDense = cf.num + } + mi.denseCoderFields = make([]*coderFieldInfo, maxDense+1) + for _, cf := range mi.orderedCoderFields { + if int(cf.num) > len(mi.denseCoderFields) { + break + } + mi.denseCoderFields[cf.num] = cf + } + + // To preserve compatibility with historic wire output, marshal oneofs last. + if mi.Desc.Oneofs().Len() > 0 { + sort.Slice(mi.orderedCoderFields, func(i, j int) bool { + fi := fields.ByNumber(mi.orderedCoderFields[i].num) + fj := fields.ByNumber(mi.orderedCoderFields[j].num) + return order.LegacyFieldOrder(fi, fj) + }) + } + + mi.needsInitCheck = needsInitCheck(mi.Desc) + if mi.methods.Marshal == nil && mi.methods.Size == nil { + mi.methods.Flags |= piface.SupportMarshalDeterministic + mi.methods.Marshal = mi.marshal + mi.methods.Size = mi.size + } + if mi.methods.Unmarshal == nil { + mi.methods.Flags |= piface.SupportUnmarshalDiscardUnknown + mi.methods.Unmarshal = mi.unmarshal + } + if mi.methods.CheckInitialized == nil { + mi.methods.CheckInitialized = mi.checkInitialized + } + if mi.methods.Merge == nil { + mi.methods.Merge = mi.merge + } + if mi.methods.Equal == nil { + mi.methods.Equal = equal + } +} |