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author | 2025-01-14 13:10:39 +0000 | |
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committer | 2025-01-14 13:10:39 +0000 | |
commit | 4d423102c14de9e9328f1852db539d9561a3cad9 (patch) | |
tree | 6df5905f53ad7eadbfa9840939989253bfb4b199 /vendor/google.golang.org/protobuf/internal/impl/message_opaque.go | |
parent | [bugfix] migration to cleanup dropped status edits (#3637) (diff) | |
download | gotosocial-4d423102c14de9e9328f1852db539d9561a3cad9.tar.xz |
[chore]: Bump github.com/gin-contrib/gzip from 1.0.1 to 1.1.0 (#3639)
Bumps [github.com/gin-contrib/gzip](https://github.com/gin-contrib/gzip) from 1.0.1 to 1.1.0.
- [Release notes](https://github.com/gin-contrib/gzip/releases)
- [Changelog](https://github.com/gin-contrib/gzip/blob/master/.goreleaser.yaml)
- [Commits](https://github.com/gin-contrib/gzip/compare/v1.0.1...v1.1.0)
---
updated-dependencies:
- dependency-name: github.com/gin-contrib/gzip
dependency-type: direct:production
update-type: version-update:semver-minor
...
Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Diffstat (limited to 'vendor/google.golang.org/protobuf/internal/impl/message_opaque.go')
-rw-r--r-- | vendor/google.golang.org/protobuf/internal/impl/message_opaque.go | 614 |
1 files changed, 614 insertions, 0 deletions
diff --git a/vendor/google.golang.org/protobuf/internal/impl/message_opaque.go b/vendor/google.golang.org/protobuf/internal/impl/message_opaque.go new file mode 100644 index 000000000..d407dd791 --- /dev/null +++ b/vendor/google.golang.org/protobuf/internal/impl/message_opaque.go @@ -0,0 +1,614 @@ +// 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" + "math" + "reflect" + "strings" + "sync/atomic" + + "google.golang.org/protobuf/reflect/protoreflect" +) + +type opaqueStructInfo struct { + structInfo +} + +// isOpaque determines whether a protobuf message type is on the Opaque API. It +// checks whether the type is a Go struct that protoc-gen-go would generate. +// +// This function only detects newly generated messages from the v2 +// implementation of protoc-gen-go. It is unable to classify generated messages +// that are too old or those that are generated by a different generator +// such as protoc-gen-gogo. +func isOpaque(t reflect.Type) bool { + // The current detection mechanism is to simply check the first field + // for a struct tag with the "protogen" key. + if t.Kind() == reflect.Struct && t.NumField() > 0 { + pgt := t.Field(0).Tag.Get("protogen") + return strings.HasPrefix(pgt, "opaque.") + } + return false +} + +func opaqueInitHook(mi *MessageInfo) bool { + mt := mi.GoReflectType.Elem() + si := opaqueStructInfo{ + structInfo: mi.makeStructInfo(mt), + } + + if !isOpaque(mt) { + return false + } + + defer atomic.StoreUint32(&mi.initDone, 1) + + mi.fields = map[protoreflect.FieldNumber]*fieldInfo{} + fds := mi.Desc.Fields() + for i := 0; i < fds.Len(); i++ { + fd := fds.Get(i) + fs := si.fieldsByNumber[fd.Number()] + var fi fieldInfo + usePresence, _ := usePresenceForField(si, fd) + + switch { + case fd.IsWeak(): + // Weak fields are no different for opaque. + fi = fieldInfoForWeakMessage(fd, si.weakOffset) + case fd.ContainingOneof() != nil && !fd.ContainingOneof().IsSynthetic(): + // Oneofs are no different for opaque. + fi = fieldInfoForOneof(fd, si.oneofsByName[fd.ContainingOneof().Name()], mi.Exporter, si.oneofWrappersByNumber[fd.Number()]) + case fd.IsMap(): + fi = mi.fieldInfoForMapOpaque(si, fd, fs) + case fd.IsList() && fd.Message() == nil && usePresence: + fi = mi.fieldInfoForScalarListOpaque(si, fd, fs) + case fd.IsList() && fd.Message() == nil: + // Proto3 lists without presence can use same access methods as open + fi = fieldInfoForList(fd, fs, mi.Exporter) + case fd.IsList() && usePresence: + fi = mi.fieldInfoForMessageListOpaque(si, fd, fs) + case fd.IsList(): + // Proto3 opaque messages that does not need presence bitmap. + // Different representation than open struct, but same logic + fi = mi.fieldInfoForMessageListOpaqueNoPresence(si, fd, fs) + case fd.Message() != nil && usePresence: + fi = mi.fieldInfoForMessageOpaque(si, fd, fs) + case fd.Message() != nil: + // Proto3 messages without presence can use same access methods as open + fi = fieldInfoForMessage(fd, fs, mi.Exporter) + default: + fi = mi.fieldInfoForScalarOpaque(si, fd, fs) + } + mi.fields[fd.Number()] = &fi + } + mi.oneofs = map[protoreflect.Name]*oneofInfo{} + for i := 0; i < mi.Desc.Oneofs().Len(); i++ { + od := mi.Desc.Oneofs().Get(i) + if !od.IsSynthetic() { + mi.oneofs[od.Name()] = makeOneofInfo(od, si.structInfo, mi.Exporter) + } + } + + mi.denseFields = make([]*fieldInfo, fds.Len()*2) + for i := 0; i < fds.Len(); i++ { + if fd := fds.Get(i); int(fd.Number()) < len(mi.denseFields) { + mi.denseFields[fd.Number()] = mi.fields[fd.Number()] + } + } + + for i := 0; i < fds.Len(); { + fd := fds.Get(i) + if od := fd.ContainingOneof(); od != nil && !fd.ContainingOneof().IsSynthetic() { + mi.rangeInfos = append(mi.rangeInfos, mi.oneofs[od.Name()]) + i += od.Fields().Len() + } else { + mi.rangeInfos = append(mi.rangeInfos, mi.fields[fd.Number()]) + i++ + } + } + + mi.makeExtensionFieldsFunc(mt, si.structInfo) + mi.makeUnknownFieldsFunc(mt, si.structInfo) + mi.makeOpaqueCoderMethods(mt, si) + mi.makeFieldTypes(si.structInfo) + + return true +} + +func (mi *MessageInfo) fieldInfoForMapOpaque(si opaqueStructInfo, fd protoreflect.FieldDescriptor, fs reflect.StructField) fieldInfo { + ft := fs.Type + if ft.Kind() != reflect.Map { + panic(fmt.Sprintf("invalid type: got %v, want map kind", ft)) + } + fieldOffset := offsetOf(fs, mi.Exporter) + conv := NewConverter(ft, fd) + return fieldInfo{ + fieldDesc: fd, + has: func(p pointer) bool { + if p.IsNil() { + return false + } + // Don't bother checking presence bits, since we need to + // look at the map length even if the presence bit is set. + rv := p.Apply(fieldOffset).AsValueOf(fs.Type).Elem() + return rv.Len() > 0 + }, + clear: func(p pointer) { + rv := p.Apply(fieldOffset).AsValueOf(fs.Type).Elem() + rv.Set(reflect.Zero(rv.Type())) + }, + get: func(p pointer) protoreflect.Value { + if p.IsNil() { + return conv.Zero() + } + rv := p.Apply(fieldOffset).AsValueOf(fs.Type).Elem() + if rv.Len() == 0 { + return conv.Zero() + } + return conv.PBValueOf(rv) + }, + set: func(p pointer, v protoreflect.Value) { + pv := conv.GoValueOf(v) + if pv.IsNil() { + panic(fmt.Sprintf("invalid value: setting map field to read-only value")) + } + rv := p.Apply(fieldOffset).AsValueOf(fs.Type).Elem() + rv.Set(pv) + }, + mutable: func(p pointer) protoreflect.Value { + v := p.Apply(fieldOffset).AsValueOf(fs.Type).Elem() + if v.IsNil() { + v.Set(reflect.MakeMap(fs.Type)) + } + return conv.PBValueOf(v) + }, + newField: func() protoreflect.Value { + return conv.New() + }, + } +} + +func (mi *MessageInfo) fieldInfoForScalarListOpaque(si opaqueStructInfo, fd protoreflect.FieldDescriptor, fs reflect.StructField) fieldInfo { + ft := fs.Type + if ft.Kind() != reflect.Slice { + panic(fmt.Sprintf("invalid type: got %v, want slice kind", ft)) + } + conv := NewConverter(reflect.PtrTo(ft), fd) + fieldOffset := offsetOf(fs, mi.Exporter) + index, _ := presenceIndex(mi.Desc, fd) + return fieldInfo{ + fieldDesc: fd, + has: func(p pointer) bool { + if p.IsNil() { + return false + } + rv := p.Apply(fieldOffset).AsValueOf(fs.Type).Elem() + return rv.Len() > 0 + }, + clear: func(p pointer) { + rv := p.Apply(fieldOffset).AsValueOf(fs.Type).Elem() + rv.Set(reflect.Zero(rv.Type())) + }, + get: func(p pointer) protoreflect.Value { + if p.IsNil() { + return conv.Zero() + } + rv := p.Apply(fieldOffset).AsValueOf(fs.Type) + if rv.Elem().Len() == 0 { + return conv.Zero() + } + return conv.PBValueOf(rv) + }, + set: func(p pointer, v protoreflect.Value) { + pv := conv.GoValueOf(v) + if pv.IsNil() { + panic(fmt.Sprintf("invalid value: setting repeated field to read-only value")) + } + mi.setPresent(p, index) + rv := p.Apply(fieldOffset).AsValueOf(fs.Type).Elem() + rv.Set(pv.Elem()) + }, + mutable: func(p pointer) protoreflect.Value { + mi.setPresent(p, index) + return conv.PBValueOf(p.Apply(fieldOffset).AsValueOf(fs.Type)) + }, + newField: func() protoreflect.Value { + return conv.New() + }, + } +} + +func (mi *MessageInfo) fieldInfoForMessageListOpaque(si opaqueStructInfo, fd protoreflect.FieldDescriptor, fs reflect.StructField) fieldInfo { + ft := fs.Type + if ft.Kind() != reflect.Ptr || ft.Elem().Kind() != reflect.Slice { + panic(fmt.Sprintf("invalid type: got %v, want slice kind", ft)) + } + conv := NewConverter(ft, fd) + fieldOffset := offsetOf(fs, mi.Exporter) + index, _ := presenceIndex(mi.Desc, fd) + fieldNumber := fd.Number() + return fieldInfo{ + fieldDesc: fd, + has: func(p pointer) bool { + if p.IsNil() { + return false + } + if !mi.present(p, index) { + return false + } + sp := p.Apply(fieldOffset).AtomicGetPointer() + if sp.IsNil() { + // Lazily unmarshal this field. + mi.lazyUnmarshal(p, fieldNumber) + sp = p.Apply(fieldOffset).AtomicGetPointer() + } + rv := sp.AsValueOf(fs.Type.Elem()) + return rv.Elem().Len() > 0 + }, + clear: func(p pointer) { + fp := p.Apply(fieldOffset) + sp := fp.AtomicGetPointer() + if sp.IsNil() { + sp = fp.AtomicSetPointerIfNil(pointerOfValue(reflect.New(fs.Type.Elem()))) + mi.setPresent(p, index) + } + rv := sp.AsValueOf(fs.Type.Elem()) + rv.Elem().Set(reflect.Zero(rv.Type().Elem())) + }, + get: func(p pointer) protoreflect.Value { + if p.IsNil() { + return conv.Zero() + } + if !mi.present(p, index) { + return conv.Zero() + } + sp := p.Apply(fieldOffset).AtomicGetPointer() + if sp.IsNil() { + // Lazily unmarshal this field. + mi.lazyUnmarshal(p, fieldNumber) + sp = p.Apply(fieldOffset).AtomicGetPointer() + } + rv := sp.AsValueOf(fs.Type.Elem()) + if rv.Elem().Len() == 0 { + return conv.Zero() + } + return conv.PBValueOf(rv) + }, + set: func(p pointer, v protoreflect.Value) { + fp := p.Apply(fieldOffset) + sp := fp.AtomicGetPointer() + if sp.IsNil() { + sp = fp.AtomicSetPointerIfNil(pointerOfValue(reflect.New(fs.Type.Elem()))) + mi.setPresent(p, index) + } + rv := sp.AsValueOf(fs.Type.Elem()) + val := conv.GoValueOf(v) + if val.IsNil() { + panic(fmt.Sprintf("invalid value: setting repeated field to read-only value")) + } else { + rv.Elem().Set(val.Elem()) + } + }, + mutable: func(p pointer) protoreflect.Value { + fp := p.Apply(fieldOffset) + sp := fp.AtomicGetPointer() + if sp.IsNil() { + if mi.present(p, index) { + // Lazily unmarshal this field. + mi.lazyUnmarshal(p, fieldNumber) + sp = p.Apply(fieldOffset).AtomicGetPointer() + } else { + sp = fp.AtomicSetPointerIfNil(pointerOfValue(reflect.New(fs.Type.Elem()))) + mi.setPresent(p, index) + } + } + rv := sp.AsValueOf(fs.Type.Elem()) + return conv.PBValueOf(rv) + }, + newField: func() protoreflect.Value { + return conv.New() + }, + } +} + +func (mi *MessageInfo) fieldInfoForMessageListOpaqueNoPresence(si opaqueStructInfo, fd protoreflect.FieldDescriptor, fs reflect.StructField) fieldInfo { + ft := fs.Type + if ft.Kind() != reflect.Ptr || ft.Elem().Kind() != reflect.Slice { + panic(fmt.Sprintf("invalid type: got %v, want slice kind", ft)) + } + conv := NewConverter(ft, fd) + fieldOffset := offsetOf(fs, mi.Exporter) + return fieldInfo{ + fieldDesc: fd, + has: func(p pointer) bool { + if p.IsNil() { + return false + } + sp := p.Apply(fieldOffset).AtomicGetPointer() + if sp.IsNil() { + return false + } + rv := sp.AsValueOf(fs.Type.Elem()) + return rv.Elem().Len() > 0 + }, + clear: func(p pointer) { + sp := p.Apply(fieldOffset).AtomicGetPointer() + if !sp.IsNil() { + rv := sp.AsValueOf(fs.Type.Elem()) + rv.Elem().Set(reflect.Zero(rv.Type().Elem())) + } + }, + get: func(p pointer) protoreflect.Value { + if p.IsNil() { + return conv.Zero() + } + sp := p.Apply(fieldOffset).AtomicGetPointer() + if sp.IsNil() { + return conv.Zero() + } + rv := sp.AsValueOf(fs.Type.Elem()) + if rv.Elem().Len() == 0 { + return conv.Zero() + } + return conv.PBValueOf(rv) + }, + set: func(p pointer, v protoreflect.Value) { + rv := p.Apply(fieldOffset).AsValueOf(fs.Type).Elem() + if rv.IsNil() { + rv.Set(reflect.New(fs.Type.Elem())) + } + val := conv.GoValueOf(v) + if val.IsNil() { + panic(fmt.Sprintf("invalid value: setting repeated field to read-only value")) + } else { + rv.Elem().Set(val.Elem()) + } + }, + mutable: func(p pointer) protoreflect.Value { + rv := p.Apply(fieldOffset).AsValueOf(fs.Type).Elem() + if rv.IsNil() { + rv.Set(reflect.New(fs.Type.Elem())) + } + return conv.PBValueOf(rv) + }, + newField: func() protoreflect.Value { + return conv.New() + }, + } +} + +func (mi *MessageInfo) fieldInfoForScalarOpaque(si opaqueStructInfo, fd protoreflect.FieldDescriptor, fs reflect.StructField) fieldInfo { + ft := fs.Type + nullable := fd.HasPresence() + if oneof := fd.ContainingOneof(); oneof != nil && oneof.IsSynthetic() { + nullable = true + } + deref := false + if nullable && ft.Kind() == reflect.Ptr { + ft = ft.Elem() + deref = true + } + conv := NewConverter(ft, fd) + fieldOffset := offsetOf(fs, mi.Exporter) + index, _ := presenceIndex(mi.Desc, fd) + var getter func(p pointer) protoreflect.Value + if !nullable { + getter = getterForDirectScalar(fd, fs, conv, fieldOffset) + } else { + getter = getterForOpaqueNullableScalar(mi, index, fd, fs, conv, fieldOffset) + } + return fieldInfo{ + fieldDesc: fd, + has: func(p pointer) bool { + if p.IsNil() { + return false + } + if nullable { + return mi.present(p, index) + } + rv := p.Apply(fieldOffset).AsValueOf(fs.Type).Elem() + switch rv.Kind() { + case reflect.Bool: + return rv.Bool() + case reflect.Int32, reflect.Int64: + return rv.Int() != 0 + case reflect.Uint32, reflect.Uint64: + return rv.Uint() != 0 + case reflect.Float32, reflect.Float64: + return rv.Float() != 0 || math.Signbit(rv.Float()) + case reflect.String, reflect.Slice: + return rv.Len() > 0 + default: + panic(fmt.Sprintf("invalid type: %v", rv.Type())) // should never happen + } + }, + clear: func(p pointer) { + if nullable { + mi.clearPresent(p, index) + } + // This is only valuable for bytes and strings, but we do it unconditionally. + rv := p.Apply(fieldOffset).AsValueOf(fs.Type).Elem() + rv.Set(reflect.Zero(rv.Type())) + }, + get: getter, + // TODO: Implement unsafe fast path for set? + set: func(p pointer, v protoreflect.Value) { + rv := p.Apply(fieldOffset).AsValueOf(fs.Type).Elem() + if deref { + if rv.IsNil() { + rv.Set(reflect.New(ft)) + } + rv = rv.Elem() + } + + rv.Set(conv.GoValueOf(v)) + if nullable && rv.Kind() == reflect.Slice && rv.IsNil() { + rv.Set(emptyBytes) + } + if nullable { + mi.setPresent(p, index) + } + }, + newField: func() protoreflect.Value { + return conv.New() + }, + } +} + +func (mi *MessageInfo) fieldInfoForMessageOpaque(si opaqueStructInfo, fd protoreflect.FieldDescriptor, fs reflect.StructField) fieldInfo { + ft := fs.Type + conv := NewConverter(ft, fd) + fieldOffset := offsetOf(fs, mi.Exporter) + index, _ := presenceIndex(mi.Desc, fd) + fieldNumber := fd.Number() + elemType := fs.Type.Elem() + return fieldInfo{ + fieldDesc: fd, + has: func(p pointer) bool { + if p.IsNil() { + return false + } + return mi.present(p, index) + }, + clear: func(p pointer) { + mi.clearPresent(p, index) + p.Apply(fieldOffset).AtomicSetNilPointer() + }, + get: func(p pointer) protoreflect.Value { + if p.IsNil() || !mi.present(p, index) { + return conv.Zero() + } + fp := p.Apply(fieldOffset) + mp := fp.AtomicGetPointer() + if mp.IsNil() { + // Lazily unmarshal this field. + mi.lazyUnmarshal(p, fieldNumber) + mp = fp.AtomicGetPointer() + } + rv := mp.AsValueOf(elemType) + return conv.PBValueOf(rv) + }, + set: func(p pointer, v protoreflect.Value) { + val := pointerOfValue(conv.GoValueOf(v)) + if val.IsNil() { + panic("invalid nil pointer") + } + p.Apply(fieldOffset).AtomicSetPointer(val) + mi.setPresent(p, index) + }, + mutable: func(p pointer) protoreflect.Value { + fp := p.Apply(fieldOffset) + mp := fp.AtomicGetPointer() + if mp.IsNil() { + if mi.present(p, index) { + // Lazily unmarshal this field. + mi.lazyUnmarshal(p, fieldNumber) + mp = fp.AtomicGetPointer() + } else { + mp = pointerOfValue(conv.GoValueOf(conv.New())) + fp.AtomicSetPointer(mp) + mi.setPresent(p, index) + } + } + return conv.PBValueOf(mp.AsValueOf(fs.Type.Elem())) + }, + newMessage: func() protoreflect.Message { + return conv.New().Message() + }, + newField: func() protoreflect.Value { + return conv.New() + }, + } +} + +// A presenceList wraps a List, updating presence bits as necessary when the +// list contents change. +type presenceList struct { + pvalueList + setPresence func(bool) +} +type pvalueList interface { + protoreflect.List + //Unwrapper +} + +func (list presenceList) Append(v protoreflect.Value) { + list.pvalueList.Append(v) + list.setPresence(true) +} +func (list presenceList) Truncate(i int) { + list.pvalueList.Truncate(i) + list.setPresence(i > 0) +} + +// presenceIndex returns the index to pass to presence functions. +// +// TODO: field.Desc.Index() would be simpler, and would give space to record the presence of oneof fields. +func presenceIndex(md protoreflect.MessageDescriptor, fd protoreflect.FieldDescriptor) (uint32, presenceSize) { + found := false + var index, numIndices uint32 + for i := 0; i < md.Fields().Len(); i++ { + f := md.Fields().Get(i) + if f == fd { + found = true + index = numIndices + } + if f.ContainingOneof() == nil || isLastOneofField(f) { + numIndices++ + } + } + if !found { + panic(fmt.Sprintf("BUG: %v not in %v", fd.Name(), md.FullName())) + } + return index, presenceSize(numIndices) +} + +func isLastOneofField(fd protoreflect.FieldDescriptor) bool { + fields := fd.ContainingOneof().Fields() + return fields.Get(fields.Len()-1) == fd +} + +func (mi *MessageInfo) setPresent(p pointer, index uint32) { + p.Apply(mi.presenceOffset).PresenceInfo().SetPresent(index, mi.presenceSize) +} + +func (mi *MessageInfo) clearPresent(p pointer, index uint32) { + p.Apply(mi.presenceOffset).PresenceInfo().ClearPresent(index) +} + +func (mi *MessageInfo) present(p pointer, index uint32) bool { + return p.Apply(mi.presenceOffset).PresenceInfo().Present(index) +} + +// usePresenceForField implements the somewhat intricate logic of when +// the presence bitmap is used for a field. The main logic is that a +// field that is optional or that can be lazy will use the presence +// bit, but for proto2, also maps have a presence bit. It also records +// if the field can ever be lazy, which is true if we have a +// lazyOffset and the field is a message or a slice of messages. A +// field that is lazy will always need a presence bit. Oneofs are not +// lazy and do not use presence, unless they are a synthetic oneof, +// which is a proto3 optional field. For proto3 optionals, we use the +// presence and they can also be lazy when applicable (a message). +func usePresenceForField(si opaqueStructInfo, fd protoreflect.FieldDescriptor) (usePresence, canBeLazy bool) { + hasLazyField := fd.(interface{ IsLazy() bool }).IsLazy() + + // Non-oneof scalar fields with explicit field presence use the presence array. + usesPresenceArray := fd.HasPresence() && fd.Message() == nil && (fd.ContainingOneof() == nil || fd.ContainingOneof().IsSynthetic()) + switch { + case fd.ContainingOneof() != nil && !fd.ContainingOneof().IsSynthetic(): + return false, false + case fd.IsWeak(): + return false, false + case fd.IsMap(): + return false, false + case fd.Kind() == protoreflect.MessageKind || fd.Kind() == protoreflect.GroupKind: + return hasLazyField, hasLazyField + default: + return usesPresenceArray || (hasLazyField && fd.HasPresence()), false + } +} |