build: move e2e dependencies into e2e/go.mod

Several packages are only used while running the e2e suite. These
packages are less important to update, as the they can not influence the
final executable that is part of the Ceph-CSI container-image.

By moving these dependencies out of the main Ceph-CSI go.mod, it is
easier to identify if a reported CVE affects Ceph-CSI, or only the
testing (like most of the Kubernetes CVEs).

Signed-off-by: Niels de Vos <ndevos@ibm.com>

e2e/vendor/google.golang.org/protobuf/internal/filedesc/build.go

@@ -0,0 +1,157 @@
+// 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 filedesc provides functionality for constructing descriptors.
+//
+// The types in this package implement interfaces in the protoreflect package
+// related to protobuf descripriptors.
+package filedesc
+
+import (
+	"google.golang.org/protobuf/encoding/protowire"
+	"google.golang.org/protobuf/internal/genid"
+	"google.golang.org/protobuf/reflect/protoreflect"
+	"google.golang.org/protobuf/reflect/protoregistry"
+)
+
+// Builder construct a protoreflect.FileDescriptor from the raw descriptor.
+type Builder struct {
+	// GoPackagePath is the Go package path that is invoking this builder.
+	GoPackagePath string
+
+	// RawDescriptor is the wire-encoded bytes of FileDescriptorProto
+	// and must be populated.
+	RawDescriptor []byte
+
+	// NumEnums is the total number of enums declared in the file.
+	NumEnums int32
+	// NumMessages is the total number of messages declared in the file.
+	// It includes the implicit message declarations for map entries.
+	NumMessages int32
+	// NumExtensions is the total number of extensions declared in the file.
+	NumExtensions int32
+	// NumServices is the total number of services declared in the file.
+	NumServices int32
+
+	// TypeResolver resolves extension field types for descriptor options.
+	// If nil, it uses protoregistry.GlobalTypes.
+	TypeResolver interface {
+		protoregistry.ExtensionTypeResolver
+	}
+
+	// FileRegistry is use to lookup file, enum, and message dependencies.
+	// Once constructed, the file descriptor is registered here.
+	// If nil, it uses protoregistry.GlobalFiles.
+	FileRegistry interface {
+		FindFileByPath(string) (protoreflect.FileDescriptor, error)
+		FindDescriptorByName(protoreflect.FullName) (protoreflect.Descriptor, error)
+		RegisterFile(protoreflect.FileDescriptor) error
+	}
+}
+
+// resolverByIndex is an interface Builder.FileRegistry may implement.
+// If so, it permits looking up an enum or message dependency based on the
+// sub-list and element index into filetype.Builder.DependencyIndexes.
+type resolverByIndex interface {
+	FindEnumByIndex(int32, int32, []Enum, []Message) protoreflect.EnumDescriptor
+	FindMessageByIndex(int32, int32, []Enum, []Message) protoreflect.MessageDescriptor
+}
+
+// Indexes of each sub-list in filetype.Builder.DependencyIndexes.
+const (
+	listFieldDeps int32 = iota
+	listExtTargets
+	listExtDeps
+	listMethInDeps
+	listMethOutDeps
+)
+
+// Out is the output of the Builder.
+type Out struct {
+	File protoreflect.FileDescriptor
+
+	// Enums is all enum descriptors in "flattened ordering".
+	Enums []Enum
+	// Messages is all message descriptors in "flattened ordering".
+	// It includes the implicit message declarations for map entries.
+	Messages []Message
+	// Extensions is all extension descriptors in "flattened ordering".
+	Extensions []Extension
+	// Service is all service descriptors in "flattened ordering".
+	Services []Service
+}
+
+// Build constructs a FileDescriptor given the parameters set in Builder.
+// It assumes that the inputs are well-formed and panics if any inconsistencies
+// are encountered.
+//
+// If NumEnums+NumMessages+NumExtensions+NumServices is zero,
+// then Build automatically derives them from the raw descriptor.
+func (db Builder) Build() (out Out) {
+	// Populate the counts if uninitialized.
+	if db.NumEnums+db.NumMessages+db.NumExtensions+db.NumServices == 0 {
+		db.unmarshalCounts(db.RawDescriptor, true)
+	}
+
+	// Initialize resolvers and registries if unpopulated.
+	if db.TypeResolver == nil {
+		db.TypeResolver = protoregistry.GlobalTypes
+	}
+	if db.FileRegistry == nil {
+		db.FileRegistry = protoregistry.GlobalFiles
+	}
+
+	fd := newRawFile(db)
+	out.File = fd
+	out.Enums = fd.allEnums
+	out.Messages = fd.allMessages
+	out.Extensions = fd.allExtensions
+	out.Services = fd.allServices
+
+	if err := db.FileRegistry.RegisterFile(fd); err != nil {
+		panic(err)
+	}
+	return out
+}
+
+// unmarshalCounts counts the number of enum, message, extension, and service
+// declarations in the raw message, which is either a FileDescriptorProto
+// or a MessageDescriptorProto depending on whether isFile is set.
+func (db *Builder) unmarshalCounts(b []byte, isFile bool) {
+	for len(b) > 0 {
+		num, typ, n := protowire.ConsumeTag(b)
+		b = b[n:]
+		switch typ {
+		case protowire.BytesType:
+			v, m := protowire.ConsumeBytes(b)
+			b = b[m:]
+			if isFile {
+				switch num {
+				case genid.FileDescriptorProto_EnumType_field_number:
+					db.NumEnums++
+				case genid.FileDescriptorProto_MessageType_field_number:
+					db.unmarshalCounts(v, false)
+					db.NumMessages++
+				case genid.FileDescriptorProto_Extension_field_number:
+					db.NumExtensions++
+				case genid.FileDescriptorProto_Service_field_number:
+					db.NumServices++
+				}
+			} else {
+				switch num {
+				case genid.DescriptorProto_EnumType_field_number:
+					db.NumEnums++
+				case genid.DescriptorProto_NestedType_field_number:
+					db.unmarshalCounts(v, false)
+					db.NumMessages++
+				case genid.DescriptorProto_Extension_field_number:
+					db.NumExtensions++
+				}
+			}
+		default:
+			m := protowire.ConsumeFieldValue(num, typ, b)
+			b = b[m:]
+		}
+	}
+}

e2e/vendor/google.golang.org/protobuf/internal/filedesc/desc.go

@@ -0,0 +1,748 @@
+// 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 filedesc
+
+import (
+	"bytes"
+	"fmt"
+	"strings"
+	"sync"
+	"sync/atomic"
+
+	"google.golang.org/protobuf/internal/descfmt"
+	"google.golang.org/protobuf/internal/descopts"
+	"google.golang.org/protobuf/internal/encoding/defval"
+	"google.golang.org/protobuf/internal/encoding/messageset"
+	"google.golang.org/protobuf/internal/genid"
+	"google.golang.org/protobuf/internal/pragma"
+	"google.golang.org/protobuf/internal/strs"
+	"google.golang.org/protobuf/reflect/protoreflect"
+)
+
+// Edition is an Enum for proto2.Edition
+type Edition int32
+
+// These values align with the value of Enum in descriptor.proto which allows
+// direct conversion between the proto enum and this enum.
+const (
+	EditionUnknown     Edition = 0
+	EditionProto2      Edition = 998
+	EditionProto3      Edition = 999
+	Edition2023        Edition = 1000
+	Edition2024        Edition = 1001
+	EditionUnsupported Edition = 100000
+)
+
+// The types in this file may have a suffix:
+//	• L0: Contains fields common to all descriptors (except File) and
+//	must be initialized up front.
+//	• L1: Contains fields specific to a descriptor and
+//	must be initialized up front. If the associated proto uses Editions, the
+//  Editions features must always be resolved. If not explicitly set, the
+//  appropriate default must be resolved and set.
+//	• L2: Contains fields that are lazily initialized when constructing
+//	from the raw file descriptor. When constructing as a literal, the L2
+//	fields must be initialized up front.
+//
+// The types are exported so that packages like reflect/protodesc can
+// directly construct descriptors.
+
+type (
+	File struct {
+		fileRaw
+		L1 FileL1
+
+		once uint32     // atomically set if L2 is valid
+		mu   sync.Mutex // protects L2
+		L2   *FileL2
+	}
+	FileL1 struct {
+		Syntax  protoreflect.Syntax
+		Edition Edition // Only used if Syntax == Editions
+		Path    string
+		Package protoreflect.FullName
+
+		Enums      Enums
+		Messages   Messages
+		Extensions Extensions
+		Services   Services
+
+		EditionFeatures EditionFeatures
+	}
+	FileL2 struct {
+		Options   func() protoreflect.ProtoMessage
+		Imports   FileImports
+		Locations SourceLocations
+	}
+
+	// EditionFeatures is a frequently-instantiated struct, so please take care
+	// to minimize padding when adding new fields to this struct (add them in
+	// the right place/order).
+	EditionFeatures struct {
+		// StripEnumPrefix determines if the plugin generates enum value
+		// constants as-is, with their prefix stripped, or both variants.
+		StripEnumPrefix int
+
+		// IsFieldPresence is true if field_presence is EXPLICIT
+		// https://protobuf.dev/editions/features/#field_presence
+		IsFieldPresence bool
+
+		// IsFieldPresence is true if field_presence is LEGACY_REQUIRED
+		// https://protobuf.dev/editions/features/#field_presence
+		IsLegacyRequired bool
+
+		// IsOpenEnum is true if enum_type is OPEN
+		// https://protobuf.dev/editions/features/#enum_type
+		IsOpenEnum bool
+
+		// IsPacked is true if repeated_field_encoding is PACKED
+		// https://protobuf.dev/editions/features/#repeated_field_encoding
+		IsPacked bool
+
+		// IsUTF8Validated is true if utf_validation is VERIFY
+		// https://protobuf.dev/editions/features/#utf8_validation
+		IsUTF8Validated bool
+
+		// IsDelimitedEncoded is true if message_encoding is DELIMITED
+		// https://protobuf.dev/editions/features/#message_encoding
+		IsDelimitedEncoded bool
+
+		// IsJSONCompliant is true if json_format is ALLOW
+		// https://protobuf.dev/editions/features/#json_format
+		IsJSONCompliant bool
+
+		// GenerateLegacyUnmarshalJSON determines if the plugin generates the
+		// UnmarshalJSON([]byte) error method for enums.
+		GenerateLegacyUnmarshalJSON bool
+		// APILevel controls which API (Open, Hybrid or Opaque) should be used
+		// for generated code (.pb.go files).
+		APILevel int
+	}
+)
+
+func (fd *File) ParentFile() protoreflect.FileDescriptor { return fd }
+func (fd *File) Parent() protoreflect.Descriptor         { return nil }
+func (fd *File) Index() int                              { return 0 }
+func (fd *File) Syntax() protoreflect.Syntax             { return fd.L1.Syntax }
+
+// Not exported and just used to reconstruct the original FileDescriptor proto
+func (fd *File) Edition() int32                  { return int32(fd.L1.Edition) }
+func (fd *File) Name() protoreflect.Name         { return fd.L1.Package.Name() }
+func (fd *File) FullName() protoreflect.FullName { return fd.L1.Package }
+func (fd *File) IsPlaceholder() bool             { return false }
+func (fd *File) Options() protoreflect.ProtoMessage {
+	if f := fd.lazyInit().Options; f != nil {
+		return f()
+	}
+	return descopts.File
+}
+func (fd *File) Path() string                                  { return fd.L1.Path }
+func (fd *File) Package() protoreflect.FullName                { return fd.L1.Package }
+func (fd *File) Imports() protoreflect.FileImports             { return &fd.lazyInit().Imports }
+func (fd *File) Enums() protoreflect.EnumDescriptors           { return &fd.L1.Enums }
+func (fd *File) Messages() protoreflect.MessageDescriptors     { return &fd.L1.Messages }
+func (fd *File) Extensions() protoreflect.ExtensionDescriptors { return &fd.L1.Extensions }
+func (fd *File) Services() protoreflect.ServiceDescriptors     { return &fd.L1.Services }
+func (fd *File) SourceLocations() protoreflect.SourceLocations { return &fd.lazyInit().Locations }
+func (fd *File) Format(s fmt.State, r rune)                    { descfmt.FormatDesc(s, r, fd) }
+func (fd *File) ProtoType(protoreflect.FileDescriptor)         {}
+func (fd *File) ProtoInternal(pragma.DoNotImplement)           {}
+
+func (fd *File) lazyInit() *FileL2 {
+	if atomic.LoadUint32(&fd.once) == 0 {
+		fd.lazyInitOnce()
+	}
+	return fd.L2
+}
+
+func (fd *File) lazyInitOnce() {
+	fd.mu.Lock()
+	if fd.L2 == nil {
+		fd.lazyRawInit() // recursively initializes all L2 structures
+	}
+	atomic.StoreUint32(&fd.once, 1)
+	fd.mu.Unlock()
+}
+
+// GoPackagePath is a pseudo-internal API for determining the Go package path
+// that this file descriptor is declared in.
+//
+// WARNING: This method is exempt from the compatibility promise and may be
+// removed in the future without warning.
+func (fd *File) GoPackagePath() string {
+	return fd.builder.GoPackagePath
+}
+
+type (
+	Enum struct {
+		Base
+		L1 EnumL1
+		L2 *EnumL2 // protected by fileDesc.once
+	}
+	EnumL1 struct {
+		eagerValues bool // controls whether EnumL2.Values is already populated
+
+		EditionFeatures EditionFeatures
+	}
+	EnumL2 struct {
+		Options        func() protoreflect.ProtoMessage
+		Values         EnumValues
+		ReservedNames  Names
+		ReservedRanges EnumRanges
+	}
+
+	EnumValue struct {
+		Base
+		L1 EnumValueL1
+	}
+	EnumValueL1 struct {
+		Options func() protoreflect.ProtoMessage
+		Number  protoreflect.EnumNumber
+	}
+)
+
+func (ed *Enum) Options() protoreflect.ProtoMessage {
+	if f := ed.lazyInit().Options; f != nil {
+		return f()
+	}
+	return descopts.Enum
+}
+func (ed *Enum) Values() protoreflect.EnumValueDescriptors {
+	if ed.L1.eagerValues {
+		return &ed.L2.Values
+	}
+	return &ed.lazyInit().Values
+}
+func (ed *Enum) ReservedNames() protoreflect.Names       { return &ed.lazyInit().ReservedNames }
+func (ed *Enum) ReservedRanges() protoreflect.EnumRanges { return &ed.lazyInit().ReservedRanges }
+func (ed *Enum) Format(s fmt.State, r rune)              { descfmt.FormatDesc(s, r, ed) }
+func (ed *Enum) ProtoType(protoreflect.EnumDescriptor)   {}
+func (ed *Enum) lazyInit() *EnumL2 {
+	ed.L0.ParentFile.lazyInit() // implicitly initializes L2
+	return ed.L2
+}
+func (ed *Enum) IsClosed() bool {
+	return !ed.L1.EditionFeatures.IsOpenEnum
+}
+
+func (ed *EnumValue) Options() protoreflect.ProtoMessage {
+	if f := ed.L1.Options; f != nil {
+		return f()
+	}
+	return descopts.EnumValue
+}
+func (ed *EnumValue) Number() protoreflect.EnumNumber            { return ed.L1.Number }
+func (ed *EnumValue) Format(s fmt.State, r rune)                 { descfmt.FormatDesc(s, r, ed) }
+func (ed *EnumValue) ProtoType(protoreflect.EnumValueDescriptor) {}
+
+type (
+	Message struct {
+		Base
+		L1 MessageL1
+		L2 *MessageL2 // protected by fileDesc.once
+	}
+	MessageL1 struct {
+		Enums        Enums
+		Messages     Messages
+		Extensions   Extensions
+		IsMapEntry   bool // promoted from google.protobuf.MessageOptions
+		IsMessageSet bool // promoted from google.protobuf.MessageOptions
+
+		EditionFeatures EditionFeatures
+	}
+	MessageL2 struct {
+		Options               func() protoreflect.ProtoMessage
+		Fields                Fields
+		Oneofs                Oneofs
+		ReservedNames         Names
+		ReservedRanges        FieldRanges
+		RequiredNumbers       FieldNumbers // must be consistent with Fields.Cardinality
+		ExtensionRanges       FieldRanges
+		ExtensionRangeOptions []func() protoreflect.ProtoMessage // must be same length as ExtensionRanges
+	}
+
+	Field struct {
+		Base
+		L1 FieldL1
+	}
+	FieldL1 struct {
+		Options          func() protoreflect.ProtoMessage
+		Number           protoreflect.FieldNumber
+		Cardinality      protoreflect.Cardinality // must be consistent with Message.RequiredNumbers
+		Kind             protoreflect.Kind
+		StringName       stringName
+		IsProto3Optional bool // promoted from google.protobuf.FieldDescriptorProto
+		IsLazy           bool // promoted from google.protobuf.FieldOptions
+		Default          defaultValue
+		ContainingOneof  protoreflect.OneofDescriptor // must be consistent with Message.Oneofs.Fields
+		Enum             protoreflect.EnumDescriptor
+		Message          protoreflect.MessageDescriptor
+
+		EditionFeatures EditionFeatures
+	}
+
+	Oneof struct {
+		Base
+		L1 OneofL1
+	}
+	OneofL1 struct {
+		Options func() protoreflect.ProtoMessage
+		Fields  OneofFields // must be consistent with Message.Fields.ContainingOneof
+
+		EditionFeatures EditionFeatures
+	}
+)
+
+func (md *Message) Options() protoreflect.ProtoMessage {
+	if f := md.lazyInit().Options; f != nil {
+		return f()
+	}
+	return descopts.Message
+}
+func (md *Message) IsMapEntry() bool                           { return md.L1.IsMapEntry }
+func (md *Message) Fields() protoreflect.FieldDescriptors      { return &md.lazyInit().Fields }
+func (md *Message) Oneofs() protoreflect.OneofDescriptors      { return &md.lazyInit().Oneofs }
+func (md *Message) ReservedNames() protoreflect.Names          { return &md.lazyInit().ReservedNames }
+func (md *Message) ReservedRanges() protoreflect.FieldRanges   { return &md.lazyInit().ReservedRanges }
+func (md *Message) RequiredNumbers() protoreflect.FieldNumbers { return &md.lazyInit().RequiredNumbers }
+func (md *Message) ExtensionRanges() protoreflect.FieldRanges  { return &md.lazyInit().ExtensionRanges }
+func (md *Message) ExtensionRangeOptions(i int) protoreflect.ProtoMessage {
+	if f := md.lazyInit().ExtensionRangeOptions[i]; f != nil {
+		return f()
+	}
+	return descopts.ExtensionRange
+}
+func (md *Message) Enums() protoreflect.EnumDescriptors           { return &md.L1.Enums }
+func (md *Message) Messages() protoreflect.MessageDescriptors     { return &md.L1.Messages }
+func (md *Message) Extensions() protoreflect.ExtensionDescriptors { return &md.L1.Extensions }
+func (md *Message) ProtoType(protoreflect.MessageDescriptor)      {}
+func (md *Message) Format(s fmt.State, r rune)                    { descfmt.FormatDesc(s, r, md) }
+func (md *Message) lazyInit() *MessageL2 {
+	md.L0.ParentFile.lazyInit() // implicitly initializes L2
+	return md.L2
+}
+
+// IsMessageSet is a pseudo-internal API for checking whether a message
+// should serialize in the proto1 message format.
+//
+// WARNING: This method is exempt from the compatibility promise and may be
+// removed in the future without warning.
+func (md *Message) IsMessageSet() bool {
+	return md.L1.IsMessageSet
+}
+
+func (fd *Field) Options() protoreflect.ProtoMessage {
+	if f := fd.L1.Options; f != nil {
+		return f()
+	}
+	return descopts.Field
+}
+func (fd *Field) Number() protoreflect.FieldNumber      { return fd.L1.Number }
+func (fd *Field) Cardinality() protoreflect.Cardinality { return fd.L1.Cardinality }
+func (fd *Field) Kind() protoreflect.Kind {
+	return fd.L1.Kind
+}
+func (fd *Field) HasJSONName() bool { return fd.L1.StringName.hasJSON }
+func (fd *Field) JSONName() string  { return fd.L1.StringName.getJSON(fd) }
+func (fd *Field) TextName() string  { return fd.L1.StringName.getText(fd) }
+func (fd *Field) HasPresence() bool {
+	if fd.L1.Cardinality == protoreflect.Repeated {
+		return false
+	}
+	return fd.IsExtension() || fd.L1.EditionFeatures.IsFieldPresence || fd.L1.Message != nil || fd.L1.ContainingOneof != nil
+}
+func (fd *Field) HasOptionalKeyword() bool {
+	return (fd.L0.ParentFile.L1.Syntax == protoreflect.Proto2 && fd.L1.Cardinality == protoreflect.Optional && fd.L1.ContainingOneof == nil) || fd.L1.IsProto3Optional
+}
+func (fd *Field) IsPacked() bool {
+	if fd.L1.Cardinality != protoreflect.Repeated {
+		return false
+	}
+	switch fd.L1.Kind {
+	case protoreflect.StringKind, protoreflect.BytesKind, protoreflect.MessageKind, protoreflect.GroupKind:
+		return false
+	}
+	return fd.L1.EditionFeatures.IsPacked
+}
+func (fd *Field) IsExtension() bool { return false }
+func (fd *Field) IsWeak() bool      { return false }
+func (fd *Field) IsLazy() bool      { return fd.L1.IsLazy }
+func (fd *Field) IsList() bool      { return fd.Cardinality() == protoreflect.Repeated && !fd.IsMap() }
+func (fd *Field) IsMap() bool       { return fd.Message() != nil && fd.Message().IsMapEntry() }
+func (fd *Field) MapKey() protoreflect.FieldDescriptor {
+	if !fd.IsMap() {
+		return nil
+	}
+	return fd.Message().Fields().ByNumber(genid.MapEntry_Key_field_number)
+}
+func (fd *Field) MapValue() protoreflect.FieldDescriptor {
+	if !fd.IsMap() {
+		return nil
+	}
+	return fd.Message().Fields().ByNumber(genid.MapEntry_Value_field_number)
+}
+func (fd *Field) HasDefault() bool                                   { return fd.L1.Default.has }
+func (fd *Field) Default() protoreflect.Value                        { return fd.L1.Default.get(fd) }
+func (fd *Field) DefaultEnumValue() protoreflect.EnumValueDescriptor { return fd.L1.Default.enum }
+func (fd *Field) ContainingOneof() protoreflect.OneofDescriptor      { return fd.L1.ContainingOneof }
+func (fd *Field) ContainingMessage() protoreflect.MessageDescriptor {
+	return fd.L0.Parent.(protoreflect.MessageDescriptor)
+}
+func (fd *Field) Enum() protoreflect.EnumDescriptor {
+	return fd.L1.Enum
+}
+func (fd *Field) Message() protoreflect.MessageDescriptor {
+	return fd.L1.Message
+}
+func (fd *Field) IsMapEntry() bool {
+	parent, ok := fd.L0.Parent.(protoreflect.MessageDescriptor)
+	return ok && parent.IsMapEntry()
+}
+func (fd *Field) Format(s fmt.State, r rune)             { descfmt.FormatDesc(s, r, fd) }
+func (fd *Field) ProtoType(protoreflect.FieldDescriptor) {}
+
+// EnforceUTF8 is a pseudo-internal API to determine whether to enforce UTF-8
+// validation for the string field. This exists for Google-internal use only
+// since proto3 did not enforce UTF-8 validity prior to the open-source release.
+// If this method does not exist, the default is to enforce valid UTF-8.
+//
+// WARNING: This method is exempt from the compatibility promise and may be
+// removed in the future without warning.
+func (fd *Field) EnforceUTF8() bool {
+	return fd.L1.EditionFeatures.IsUTF8Validated
+}
+
+func (od *Oneof) IsSynthetic() bool {
+	return od.L0.ParentFile.L1.Syntax == protoreflect.Proto3 && len(od.L1.Fields.List) == 1 && od.L1.Fields.List[0].HasOptionalKeyword()
+}
+func (od *Oneof) Options() protoreflect.ProtoMessage {
+	if f := od.L1.Options; f != nil {
+		return f()
+	}
+	return descopts.Oneof
+}
+func (od *Oneof) Fields() protoreflect.FieldDescriptors  { return &od.L1.Fields }
+func (od *Oneof) Format(s fmt.State, r rune)             { descfmt.FormatDesc(s, r, od) }
+func (od *Oneof) ProtoType(protoreflect.OneofDescriptor) {}
+
+type (
+	Extension struct {
+		Base
+		L1 ExtensionL1
+		L2 *ExtensionL2 // protected by fileDesc.once
+	}
+	ExtensionL1 struct {
+		Number          protoreflect.FieldNumber
+		Extendee        protoreflect.MessageDescriptor
+		Cardinality     protoreflect.Cardinality
+		Kind            protoreflect.Kind
+		IsLazy          bool
+		EditionFeatures EditionFeatures
+	}
+	ExtensionL2 struct {
+		Options          func() protoreflect.ProtoMessage
+		StringName       stringName
+		IsProto3Optional bool // promoted from google.protobuf.FieldDescriptorProto
+		Default          defaultValue
+		Enum             protoreflect.EnumDescriptor
+		Message          protoreflect.MessageDescriptor
+	}
+)
+
+func (xd *Extension) Options() protoreflect.ProtoMessage {
+	if f := xd.lazyInit().Options; f != nil {
+		return f()
+	}
+	return descopts.Field
+}
+func (xd *Extension) Number() protoreflect.FieldNumber      { return xd.L1.Number }
+func (xd *Extension) Cardinality() protoreflect.Cardinality { return xd.L1.Cardinality }
+func (xd *Extension) Kind() protoreflect.Kind               { return xd.L1.Kind }
+func (xd *Extension) HasJSONName() bool                     { return xd.lazyInit().StringName.hasJSON }
+func (xd *Extension) JSONName() string                      { return xd.lazyInit().StringName.getJSON(xd) }
+func (xd *Extension) TextName() string                      { return xd.lazyInit().StringName.getText(xd) }
+func (xd *Extension) HasPresence() bool                     { return xd.L1.Cardinality != protoreflect.Repeated }
+func (xd *Extension) HasOptionalKeyword() bool {
+	return (xd.L0.ParentFile.L1.Syntax == protoreflect.Proto2 && xd.L1.Cardinality == protoreflect.Optional) || xd.lazyInit().IsProto3Optional
+}
+func (xd *Extension) IsPacked() bool {
+	if xd.L1.Cardinality != protoreflect.Repeated {
+		return false
+	}
+	switch xd.L1.Kind {
+	case protoreflect.StringKind, protoreflect.BytesKind, protoreflect.MessageKind, protoreflect.GroupKind:
+		return false
+	}
+	return xd.L1.EditionFeatures.IsPacked
+}
+func (xd *Extension) IsExtension() bool                      { return true }
+func (xd *Extension) IsWeak() bool                           { return false }
+func (xd *Extension) IsLazy() bool                           { return xd.L1.IsLazy }
+func (xd *Extension) IsList() bool                           { return xd.Cardinality() == protoreflect.Repeated }
+func (xd *Extension) IsMap() bool                            { return false }
+func (xd *Extension) MapKey() protoreflect.FieldDescriptor   { return nil }
+func (xd *Extension) MapValue() protoreflect.FieldDescriptor { return nil }
+func (xd *Extension) HasDefault() bool                       { return xd.lazyInit().Default.has }
+func (xd *Extension) Default() protoreflect.Value            { return xd.lazyInit().Default.get(xd) }
+func (xd *Extension) DefaultEnumValue() protoreflect.EnumValueDescriptor {
+	return xd.lazyInit().Default.enum
+}
+func (xd *Extension) ContainingOneof() protoreflect.OneofDescriptor     { return nil }
+func (xd *Extension) ContainingMessage() protoreflect.MessageDescriptor { return xd.L1.Extendee }
+func (xd *Extension) Enum() protoreflect.EnumDescriptor                 { return xd.lazyInit().Enum }
+func (xd *Extension) Message() protoreflect.MessageDescriptor           { return xd.lazyInit().Message }
+func (xd *Extension) Format(s fmt.State, r rune)                        { descfmt.FormatDesc(s, r, xd) }
+func (xd *Extension) ProtoType(protoreflect.FieldDescriptor)            {}
+func (xd *Extension) ProtoInternal(pragma.DoNotImplement)               {}
+func (xd *Extension) lazyInit() *ExtensionL2 {
+	xd.L0.ParentFile.lazyInit() // implicitly initializes L2
+	return xd.L2
+}
+
+type (
+	Service struct {
+		Base
+		L1 ServiceL1
+		L2 *ServiceL2 // protected by fileDesc.once
+	}
+	ServiceL1 struct{}
+	ServiceL2 struct {
+		Options func() protoreflect.ProtoMessage
+		Methods Methods
+	}
+
+	Method struct {
+		Base
+		L1 MethodL1
+	}
+	MethodL1 struct {
+		Options           func() protoreflect.ProtoMessage
+		Input             protoreflect.MessageDescriptor
+		Output            protoreflect.MessageDescriptor
+		IsStreamingClient bool
+		IsStreamingServer bool
+	}
+)
+
+func (sd *Service) Options() protoreflect.ProtoMessage {
+	if f := sd.lazyInit().Options; f != nil {
+		return f()
+	}
+	return descopts.Service
+}
+func (sd *Service) Methods() protoreflect.MethodDescriptors  { return &sd.lazyInit().Methods }
+func (sd *Service) Format(s fmt.State, r rune)               { descfmt.FormatDesc(s, r, sd) }
+func (sd *Service) ProtoType(protoreflect.ServiceDescriptor) {}
+func (sd *Service) ProtoInternal(pragma.DoNotImplement)      {}
+func (sd *Service) lazyInit() *ServiceL2 {
+	sd.L0.ParentFile.lazyInit() // implicitly initializes L2
+	return sd.L2
+}
+
+func (md *Method) Options() protoreflect.ProtoMessage {
+	if f := md.L1.Options; f != nil {
+		return f()
+	}
+	return descopts.Method
+}
+func (md *Method) Input() protoreflect.MessageDescriptor   { return md.L1.Input }
+func (md *Method) Output() protoreflect.MessageDescriptor  { return md.L1.Output }
+func (md *Method) IsStreamingClient() bool                 { return md.L1.IsStreamingClient }
+func (md *Method) IsStreamingServer() bool                 { return md.L1.IsStreamingServer }
+func (md *Method) Format(s fmt.State, r rune)              { descfmt.FormatDesc(s, r, md) }
+func (md *Method) ProtoType(protoreflect.MethodDescriptor) {}
+func (md *Method) ProtoInternal(pragma.DoNotImplement)     {}
+
+// Surrogate files are can be used to create standalone descriptors
+// where the syntax is only information derived from the parent file.
+var (
+	SurrogateProto2      = &File{L1: FileL1{Syntax: protoreflect.Proto2}, L2: &FileL2{}}
+	SurrogateProto3      = &File{L1: FileL1{Syntax: protoreflect.Proto3}, L2: &FileL2{}}
+	SurrogateEdition2023 = &File{L1: FileL1{Syntax: protoreflect.Editions, Edition: Edition2023}, L2: &FileL2{}}
+)
+
+type (
+	Base struct {
+		L0 BaseL0
+	}
+	BaseL0 struct {
+		FullName   protoreflect.FullName // must be populated
+		ParentFile *File                 // must be populated
+		Parent     protoreflect.Descriptor
+		Index      int
+	}
+)
+
+func (d *Base) Name() protoreflect.Name         { return d.L0.FullName.Name() }
+func (d *Base) FullName() protoreflect.FullName { return d.L0.FullName }
+func (d *Base) ParentFile() protoreflect.FileDescriptor {
+	if d.L0.ParentFile == SurrogateProto2 || d.L0.ParentFile == SurrogateProto3 {
+		return nil // surrogate files are not real parents
+	}
+	return d.L0.ParentFile
+}
+func (d *Base) Parent() protoreflect.Descriptor     { return d.L0.Parent }
+func (d *Base) Index() int                          { return d.L0.Index }
+func (d *Base) Syntax() protoreflect.Syntax         { return d.L0.ParentFile.Syntax() }
+func (d *Base) IsPlaceholder() bool                 { return false }
+func (d *Base) ProtoInternal(pragma.DoNotImplement) {}
+
+type stringName struct {
+	hasJSON  bool
+	once     sync.Once
+	nameJSON string
+	nameText string
+}
+
+// InitJSON initializes the name. It is exported for use by other internal packages.
+func (s *stringName) InitJSON(name string) {
+	s.hasJSON = true
+	s.nameJSON = name
+}
+
+// Returns true if this field is structured like the synthetic field of a proto2
+// group. This allows us to expand our treatment of delimited fields without
+// breaking proto2 files that have been upgraded to editions.
+func isGroupLike(fd protoreflect.FieldDescriptor) bool {
+	// Groups are always group types.
+	if fd.Kind() != protoreflect.GroupKind {
+		return false
+	}
+
+	// Group fields are always the lowercase type name.
+	if strings.ToLower(string(fd.Message().Name())) != string(fd.Name()) {
+		return false
+	}
+
+	// Groups could only be defined in the same file they're used.
+	if fd.Message().ParentFile() != fd.ParentFile() {
+		return false
+	}
+
+	// Group messages are always defined in the same scope as the field.  File
+	// level extensions will compare NULL == NULL here, which is why the file
+	// comparison above is necessary to ensure both come from the same file.
+	if fd.IsExtension() {
+		return fd.Parent() == fd.Message().Parent()
+	}
+	return fd.ContainingMessage() == fd.Message().Parent()
+}
+
+func (s *stringName) lazyInit(fd protoreflect.FieldDescriptor) *stringName {
+	s.once.Do(func() {
+		if fd.IsExtension() {
+			// For extensions, JSON and text are formatted the same way.
+			var name string
+			if messageset.IsMessageSetExtension(fd) {
+				name = string("[" + fd.FullName().Parent() + "]")
+			} else {
+				name = string("[" + fd.FullName() + "]")
+			}
+			s.nameJSON = name
+			s.nameText = name
+		} else {
+			// Format the JSON name.
+			if !s.hasJSON {
+				s.nameJSON = strs.JSONCamelCase(string(fd.Name()))
+			}
+
+			// Format the text name.
+			s.nameText = string(fd.Name())
+			if isGroupLike(fd) {
+				s.nameText = string(fd.Message().Name())
+			}
+		}
+	})
+	return s
+}
+
+func (s *stringName) getJSON(fd protoreflect.FieldDescriptor) string { return s.lazyInit(fd).nameJSON }
+func (s *stringName) getText(fd protoreflect.FieldDescriptor) string { return s.lazyInit(fd).nameText }
+
+func DefaultValue(v protoreflect.Value, ev protoreflect.EnumValueDescriptor) defaultValue {
+	dv := defaultValue{has: v.IsValid(), val: v, enum: ev}
+	if b, ok := v.Interface().([]byte); ok {
+		// Store a copy of the default bytes, so that we can detect
+		// accidental mutations of the original value.
+		dv.bytes = append([]byte(nil), b...)
+	}
+	return dv
+}
+
+func unmarshalDefault(b []byte, k protoreflect.Kind, pf *File, ed protoreflect.EnumDescriptor) defaultValue {
+	var evs protoreflect.EnumValueDescriptors
+	if k == protoreflect.EnumKind {
+		// If the enum is declared within the same file, be careful not to
+		// blindly call the Values method, lest we bind ourselves in a deadlock.
+		if e, ok := ed.(*Enum); ok && e.L0.ParentFile == pf {
+			evs = &e.L2.Values
+		} else {
+			evs = ed.Values()
+		}
+
+		// If we are unable to resolve the enum dependency, use a placeholder
+		// enum value since we will not be able to parse the default value.
+		if ed.IsPlaceholder() && protoreflect.Name(b).IsValid() {
+			v := protoreflect.ValueOfEnum(0)
+			ev := PlaceholderEnumValue(ed.FullName().Parent().Append(protoreflect.Name(b)))
+			return DefaultValue(v, ev)
+		}
+	}
+
+	v, ev, err := defval.Unmarshal(string(b), k, evs, defval.Descriptor)
+	if err != nil {
+		panic(err)
+	}
+	return DefaultValue(v, ev)
+}
+
+type defaultValue struct {
+	has   bool
+	val   protoreflect.Value
+	enum  protoreflect.EnumValueDescriptor
+	bytes []byte
+}
+
+func (dv *defaultValue) get(fd protoreflect.FieldDescriptor) protoreflect.Value {
+	// Return the zero value as the default if unpopulated.
+	if !dv.has {
+		if fd.Cardinality() == protoreflect.Repeated {
+			return protoreflect.Value{}
+		}
+		switch fd.Kind() {
+		case protoreflect.BoolKind:
+			return protoreflect.ValueOfBool(false)
+		case protoreflect.Int32Kind, protoreflect.Sint32Kind, protoreflect.Sfixed32Kind:
+			return protoreflect.ValueOfInt32(0)
+		case protoreflect.Int64Kind, protoreflect.Sint64Kind, protoreflect.Sfixed64Kind:
+			return protoreflect.ValueOfInt64(0)
+		case protoreflect.Uint32Kind, protoreflect.Fixed32Kind:
+			return protoreflect.ValueOfUint32(0)
+		case protoreflect.Uint64Kind, protoreflect.Fixed64Kind:
+			return protoreflect.ValueOfUint64(0)
+		case protoreflect.FloatKind:
+			return protoreflect.ValueOfFloat32(0)
+		case protoreflect.DoubleKind:
+			return protoreflect.ValueOfFloat64(0)
+		case protoreflect.StringKind:
+			return protoreflect.ValueOfString("")
+		case protoreflect.BytesKind:
+			return protoreflect.ValueOfBytes(nil)
+		case protoreflect.EnumKind:
+			if evs := fd.Enum().Values(); evs.Len() > 0 {
+				return protoreflect.ValueOfEnum(evs.Get(0).Number())
+			}
+			return protoreflect.ValueOfEnum(0)
+		}
+	}
+
+	if len(dv.bytes) > 0 && !bytes.Equal(dv.bytes, dv.val.Bytes()) {
+		// TODO: Avoid panic if we're running with the race detector
+		// and instead spawn a goroutine that periodically resets
+		// this value back to the original to induce a race.
+		panic(fmt.Sprintf("detected mutation on the default bytes for %v", fd.FullName()))
+	}
+	return dv.val
+}

e2e/vendor/google.golang.org/protobuf/internal/filedesc/desc_init.go

@@ -0,0 +1,560 @@
+// 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 filedesc
+
+import (
+	"fmt"
+	"sync"
+
+	"google.golang.org/protobuf/encoding/protowire"
+	"google.golang.org/protobuf/internal/genid"
+	"google.golang.org/protobuf/internal/strs"
+	"google.golang.org/protobuf/reflect/protoreflect"
+)
+
+// fileRaw is a data struct used when initializing a file descriptor from
+// a raw FileDescriptorProto.
+type fileRaw struct {
+	builder       Builder
+	allEnums      []Enum
+	allMessages   []Message
+	allExtensions []Extension
+	allServices   []Service
+}
+
+func newRawFile(db Builder) *File {
+	fd := &File{fileRaw: fileRaw{builder: db}}
+	fd.initDecls(db.NumEnums, db.NumMessages, db.NumExtensions, db.NumServices)
+	fd.unmarshalSeed(db.RawDescriptor)
+
+	// Extended message targets are eagerly resolved since registration
+	// needs this information at program init time.
+	for i := range fd.allExtensions {
+		xd := &fd.allExtensions[i]
+		xd.L1.Extendee = fd.resolveMessageDependency(xd.L1.Extendee, listExtTargets, int32(i))
+	}
+
+	fd.checkDecls()
+	return fd
+}
+
+// initDecls pre-allocates slices for the exact number of enums, messages
+// (including map entries), extensions, and services declared in the proto file.
+// This is done to avoid regrowing the slice, which would change the address
+// for any previously seen declaration.
+//
+// The alloc methods "allocates" slices by pulling from the capacity.
+func (fd *File) initDecls(numEnums, numMessages, numExtensions, numServices int32) {
+	fd.allEnums = make([]Enum, 0, numEnums)
+	fd.allMessages = make([]Message, 0, numMessages)
+	fd.allExtensions = make([]Extension, 0, numExtensions)
+	fd.allServices = make([]Service, 0, numServices)
+}
+
+func (fd *File) allocEnums(n int) []Enum {
+	total := len(fd.allEnums)
+	es := fd.allEnums[total : total+n]
+	fd.allEnums = fd.allEnums[:total+n]
+	return es
+}
+func (fd *File) allocMessages(n int) []Message {
+	total := len(fd.allMessages)
+	ms := fd.allMessages[total : total+n]
+	fd.allMessages = fd.allMessages[:total+n]
+	return ms
+}
+func (fd *File) allocExtensions(n int) []Extension {
+	total := len(fd.allExtensions)
+	xs := fd.allExtensions[total : total+n]
+	fd.allExtensions = fd.allExtensions[:total+n]
+	return xs
+}
+func (fd *File) allocServices(n int) []Service {
+	total := len(fd.allServices)
+	xs := fd.allServices[total : total+n]
+	fd.allServices = fd.allServices[:total+n]
+	return xs
+}
+
+// checkDecls performs a sanity check that the expected number of expected
+// declarations matches the number that were found in the descriptor proto.
+func (fd *File) checkDecls() {
+	switch {
+	case len(fd.allEnums) != cap(fd.allEnums):
+	case len(fd.allMessages) != cap(fd.allMessages):
+	case len(fd.allExtensions) != cap(fd.allExtensions):
+	case len(fd.allServices) != cap(fd.allServices):
+	default:
+		return
+	}
+	panic("mismatching cardinality")
+}
+
+func (fd *File) unmarshalSeed(b []byte) {
+	sb := getBuilder()
+	defer putBuilder(sb)
+
+	var prevField protoreflect.FieldNumber
+	var numEnums, numMessages, numExtensions, numServices int
+	var posEnums, posMessages, posExtensions, posServices int
+	var options []byte
+	b0 := b
+	for len(b) > 0 {
+		num, typ, n := protowire.ConsumeTag(b)
+		b = b[n:]
+		switch typ {
+		case protowire.BytesType:
+			v, m := protowire.ConsumeBytes(b)
+			b = b[m:]
+			switch num {
+			case genid.FileDescriptorProto_Syntax_field_number:
+				switch string(v) {
+				case "proto2":
+					fd.L1.Syntax = protoreflect.Proto2
+					fd.L1.Edition = EditionProto2
+				case "proto3":
+					fd.L1.Syntax = protoreflect.Proto3
+					fd.L1.Edition = EditionProto3
+				case "editions":
+					fd.L1.Syntax = protoreflect.Editions
+				default:
+					panic("invalid syntax")
+				}
+			case genid.FileDescriptorProto_Name_field_number:
+				fd.L1.Path = sb.MakeString(v)
+			case genid.FileDescriptorProto_Package_field_number:
+				fd.L1.Package = protoreflect.FullName(sb.MakeString(v))
+			case genid.FileDescriptorProto_Options_field_number:
+				options = v
+			case genid.FileDescriptorProto_EnumType_field_number:
+				if prevField != genid.FileDescriptorProto_EnumType_field_number {
+					if numEnums > 0 {
+						panic("non-contiguous repeated field")
+					}
+					posEnums = len(b0) - len(b) - n - m
+				}
+				numEnums++
+			case genid.FileDescriptorProto_MessageType_field_number:
+				if prevField != genid.FileDescriptorProto_MessageType_field_number {
+					if numMessages > 0 {
+						panic("non-contiguous repeated field")
+					}
+					posMessages = len(b0) - len(b) - n - m
+				}
+				numMessages++
+			case genid.FileDescriptorProto_Extension_field_number:
+				if prevField != genid.FileDescriptorProto_Extension_field_number {
+					if numExtensions > 0 {
+						panic("non-contiguous repeated field")
+					}
+					posExtensions = len(b0) - len(b) - n - m
+				}
+				numExtensions++
+			case genid.FileDescriptorProto_Service_field_number:
+				if prevField != genid.FileDescriptorProto_Service_field_number {
+					if numServices > 0 {
+						panic("non-contiguous repeated field")
+					}
+					posServices = len(b0) - len(b) - n - m
+				}
+				numServices++
+			}
+			prevField = num
+		case protowire.VarintType:
+			v, m := protowire.ConsumeVarint(b)
+			b = b[m:]
+			switch num {
+			case genid.FileDescriptorProto_Edition_field_number:
+				fd.L1.Edition = Edition(v)
+			}
+		default:
+			m := protowire.ConsumeFieldValue(num, typ, b)
+			b = b[m:]
+			prevField = -1 // ignore known field numbers of unknown wire type
+		}
+	}
+
+	// If syntax is missing, it is assumed to be proto2.
+	if fd.L1.Syntax == 0 {
+		fd.L1.Syntax = protoreflect.Proto2
+		fd.L1.Edition = EditionProto2
+	}
+
+	fd.L1.EditionFeatures = getFeaturesFor(fd.L1.Edition)
+
+	// Parse editions features from options if any
+	if options != nil {
+		fd.unmarshalSeedOptions(options)
+	}
+
+	// Must allocate all declarations before parsing each descriptor type
+	// to ensure we handled all descriptors in "flattened ordering".
+	if numEnums > 0 {
+		fd.L1.Enums.List = fd.allocEnums(numEnums)
+	}
+	if numMessages > 0 {
+		fd.L1.Messages.List = fd.allocMessages(numMessages)
+	}
+	if numExtensions > 0 {
+		fd.L1.Extensions.List = fd.allocExtensions(numExtensions)
+	}
+	if numServices > 0 {
+		fd.L1.Services.List = fd.allocServices(numServices)
+	}
+
+	if numEnums > 0 {
+		b := b0[posEnums:]
+		for i := range fd.L1.Enums.List {
+			_, n := protowire.ConsumeVarint(b)
+			v, m := protowire.ConsumeBytes(b[n:])
+			fd.L1.Enums.List[i].unmarshalSeed(v, sb, fd, fd, i)
+			b = b[n+m:]
+		}
+	}
+	if numMessages > 0 {
+		b := b0[posMessages:]
+		for i := range fd.L1.Messages.List {
+			_, n := protowire.ConsumeVarint(b)
+			v, m := protowire.ConsumeBytes(b[n:])
+			fd.L1.Messages.List[i].unmarshalSeed(v, sb, fd, fd, i)
+			b = b[n+m:]
+		}
+	}
+	if numExtensions > 0 {
+		b := b0[posExtensions:]
+		for i := range fd.L1.Extensions.List {
+			_, n := protowire.ConsumeVarint(b)
+			v, m := protowire.ConsumeBytes(b[n:])
+			fd.L1.Extensions.List[i].unmarshalSeed(v, sb, fd, fd, i)
+			b = b[n+m:]
+		}
+	}
+	if numServices > 0 {
+		b := b0[posServices:]
+		for i := range fd.L1.Services.List {
+			_, n := protowire.ConsumeVarint(b)
+			v, m := protowire.ConsumeBytes(b[n:])
+			fd.L1.Services.List[i].unmarshalSeed(v, sb, fd, fd, i)
+			b = b[n+m:]
+		}
+	}
+}
+
+func (fd *File) unmarshalSeedOptions(b []byte) {
+	for b := b; len(b) > 0; {
+		num, typ, n := protowire.ConsumeTag(b)
+		b = b[n:]
+		switch typ {
+		case protowire.BytesType:
+			v, m := protowire.ConsumeBytes(b)
+			b = b[m:]
+			switch num {
+			case genid.FileOptions_Features_field_number:
+				if fd.Syntax() != protoreflect.Editions {
+					panic(fmt.Sprintf("invalid descriptor: using edition features in a proto with syntax %s", fd.Syntax()))
+				}
+				fd.L1.EditionFeatures = unmarshalFeatureSet(v, fd.L1.EditionFeatures)
+			}
+		default:
+			m := protowire.ConsumeFieldValue(num, typ, b)
+			b = b[m:]
+		}
+	}
+}
+
+func (ed *Enum) unmarshalSeed(b []byte, sb *strs.Builder, pf *File, pd protoreflect.Descriptor, i int) {
+	ed.L0.ParentFile = pf
+	ed.L0.Parent = pd
+	ed.L0.Index = i
+	ed.L1.EditionFeatures = featuresFromParentDesc(ed.Parent())
+
+	var numValues int
+	for b := b; len(b) > 0; {
+		num, typ, n := protowire.ConsumeTag(b)
+		b = b[n:]
+		switch typ {
+		case protowire.BytesType:
+			v, m := protowire.ConsumeBytes(b)
+			b = b[m:]
+			switch num {
+			case genid.EnumDescriptorProto_Name_field_number:
+				ed.L0.FullName = appendFullName(sb, pd.FullName(), v)
+			case genid.EnumDescriptorProto_Value_field_number:
+				numValues++
+			}
+		default:
+			m := protowire.ConsumeFieldValue(num, typ, b)
+			b = b[m:]
+		}
+	}
+
+	// Only construct enum value descriptors for top-level enums since
+	// they are needed for registration.
+	if pd != pf {
+		return
+	}
+	ed.L1.eagerValues = true
+	ed.L2 = new(EnumL2)
+	ed.L2.Values.List = make([]EnumValue, numValues)
+	for i := 0; len(b) > 0; {
+		num, typ, n := protowire.ConsumeTag(b)
+		b = b[n:]
+		switch typ {
+		case protowire.BytesType:
+			v, m := protowire.ConsumeBytes(b)
+			b = b[m:]
+			switch num {
+			case genid.EnumDescriptorProto_Value_field_number:
+				ed.L2.Values.List[i].unmarshalFull(v, sb, pf, ed, i)
+				i++
+			}
+		default:
+			m := protowire.ConsumeFieldValue(num, typ, b)
+			b = b[m:]
+		}
+	}
+}
+
+func (md *Message) unmarshalSeed(b []byte, sb *strs.Builder, pf *File, pd protoreflect.Descriptor, i int) {
+	md.L0.ParentFile = pf
+	md.L0.Parent = pd
+	md.L0.Index = i
+	md.L1.EditionFeatures = featuresFromParentDesc(md.Parent())
+
+	var prevField protoreflect.FieldNumber
+	var numEnums, numMessages, numExtensions int
+	var posEnums, posMessages, posExtensions int
+	b0 := b
+	for len(b) > 0 {
+		num, typ, n := protowire.ConsumeTag(b)
+		b = b[n:]
+		switch typ {
+		case protowire.BytesType:
+			v, m := protowire.ConsumeBytes(b)
+			b = b[m:]
+			switch num {
+			case genid.DescriptorProto_Name_field_number:
+				md.L0.FullName = appendFullName(sb, pd.FullName(), v)
+			case genid.DescriptorProto_EnumType_field_number:
+				if prevField != genid.DescriptorProto_EnumType_field_number {
+					if numEnums > 0 {
+						panic("non-contiguous repeated field")
+					}
+					posEnums = len(b0) - len(b) - n - m
+				}
+				numEnums++
+			case genid.DescriptorProto_NestedType_field_number:
+				if prevField != genid.DescriptorProto_NestedType_field_number {
+					if numMessages > 0 {
+						panic("non-contiguous repeated field")
+					}
+					posMessages = len(b0) - len(b) - n - m
+				}
+				numMessages++
+			case genid.DescriptorProto_Extension_field_number:
+				if prevField != genid.DescriptorProto_Extension_field_number {
+					if numExtensions > 0 {
+						panic("non-contiguous repeated field")
+					}
+					posExtensions = len(b0) - len(b) - n - m
+				}
+				numExtensions++
+			case genid.DescriptorProto_Options_field_number:
+				md.unmarshalSeedOptions(v)
+			}
+			prevField = num
+		default:
+			m := protowire.ConsumeFieldValue(num, typ, b)
+			b = b[m:]
+			prevField = -1 // ignore known field numbers of unknown wire type
+		}
+	}
+
+	// Must allocate all declarations before parsing each descriptor type
+	// to ensure we handled all descriptors in "flattened ordering".
+	if numEnums > 0 {
+		md.L1.Enums.List = pf.allocEnums(numEnums)
+	}
+	if numMessages > 0 {
+		md.L1.Messages.List = pf.allocMessages(numMessages)
+	}
+	if numExtensions > 0 {
+		md.L1.Extensions.List = pf.allocExtensions(numExtensions)
+	}
+
+	if numEnums > 0 {
+		b := b0[posEnums:]
+		for i := range md.L1.Enums.List {
+			_, n := protowire.ConsumeVarint(b)
+			v, m := protowire.ConsumeBytes(b[n:])
+			md.L1.Enums.List[i].unmarshalSeed(v, sb, pf, md, i)
+			b = b[n+m:]
+		}
+	}
+	if numMessages > 0 {
+		b := b0[posMessages:]
+		for i := range md.L1.Messages.List {
+			_, n := protowire.ConsumeVarint(b)
+			v, m := protowire.ConsumeBytes(b[n:])
+			md.L1.Messages.List[i].unmarshalSeed(v, sb, pf, md, i)
+			b = b[n+m:]
+		}
+	}
+	if numExtensions > 0 {
+		b := b0[posExtensions:]
+		for i := range md.L1.Extensions.List {
+			_, n := protowire.ConsumeVarint(b)
+			v, m := protowire.ConsumeBytes(b[n:])
+			md.L1.Extensions.List[i].unmarshalSeed(v, sb, pf, md, i)
+			b = b[n+m:]
+		}
+	}
+}
+
+func (md *Message) unmarshalSeedOptions(b []byte) {
+	for len(b) > 0 {
+		num, typ, n := protowire.ConsumeTag(b)
+		b = b[n:]
+		switch typ {
+		case protowire.VarintType:
+			v, m := protowire.ConsumeVarint(b)
+			b = b[m:]
+			switch num {
+			case genid.MessageOptions_MapEntry_field_number:
+				md.L1.IsMapEntry = protowire.DecodeBool(v)
+			case genid.MessageOptions_MessageSetWireFormat_field_number:
+				md.L1.IsMessageSet = protowire.DecodeBool(v)
+			}
+		case protowire.BytesType:
+			v, m := protowire.ConsumeBytes(b)
+			b = b[m:]
+			switch num {
+			case genid.MessageOptions_Features_field_number:
+				md.L1.EditionFeatures = unmarshalFeatureSet(v, md.L1.EditionFeatures)
+			}
+		default:
+			m := protowire.ConsumeFieldValue(num, typ, b)
+			b = b[m:]
+		}
+	}
+}
+
+func (xd *Extension) unmarshalSeed(b []byte, sb *strs.Builder, pf *File, pd protoreflect.Descriptor, i int) {
+	xd.L0.ParentFile = pf
+	xd.L0.Parent = pd
+	xd.L0.Index = i
+	xd.L1.EditionFeatures = featuresFromParentDesc(pd)
+
+	for len(b) > 0 {
+		num, typ, n := protowire.ConsumeTag(b)
+		b = b[n:]
+		switch typ {
+		case protowire.VarintType:
+			v, m := protowire.ConsumeVarint(b)
+			b = b[m:]
+			switch num {
+			case genid.FieldDescriptorProto_Number_field_number:
+				xd.L1.Number = protoreflect.FieldNumber(v)
+			case genid.FieldDescriptorProto_Label_field_number:
+				xd.L1.Cardinality = protoreflect.Cardinality(v)
+			case genid.FieldDescriptorProto_Type_field_number:
+				xd.L1.Kind = protoreflect.Kind(v)
+			}
+		case protowire.BytesType:
+			v, m := protowire.ConsumeBytes(b)
+			b = b[m:]
+			switch num {
+			case genid.FieldDescriptorProto_Name_field_number:
+				xd.L0.FullName = appendFullName(sb, pd.FullName(), v)
+			case genid.FieldDescriptorProto_Extendee_field_number:
+				xd.L1.Extendee = PlaceholderMessage(makeFullName(sb, v))
+			case genid.FieldDescriptorProto_Options_field_number:
+				xd.unmarshalOptions(v)
+			}
+		default:
+			m := protowire.ConsumeFieldValue(num, typ, b)
+			b = b[m:]
+		}
+	}
+
+	if xd.L1.Kind == protoreflect.MessageKind && xd.L1.EditionFeatures.IsDelimitedEncoded {
+		xd.L1.Kind = protoreflect.GroupKind
+	}
+}
+
+func (xd *Extension) unmarshalOptions(b []byte) {
+	for len(b) > 0 {
+		num, typ, n := protowire.ConsumeTag(b)
+		b = b[n:]
+		switch typ {
+		case protowire.VarintType:
+			v, m := protowire.ConsumeVarint(b)
+			b = b[m:]
+			switch num {
+			case genid.FieldOptions_Packed_field_number:
+				xd.L1.EditionFeatures.IsPacked = protowire.DecodeBool(v)
+			case genid.FieldOptions_Lazy_field_number:
+				xd.L1.IsLazy = protowire.DecodeBool(v)
+			}
+		case protowire.BytesType:
+			v, m := protowire.ConsumeBytes(b)
+			b = b[m:]
+			switch num {
+			case genid.FieldOptions_Features_field_number:
+				xd.L1.EditionFeatures = unmarshalFeatureSet(v, xd.L1.EditionFeatures)
+			}
+		default:
+			m := protowire.ConsumeFieldValue(num, typ, b)
+			b = b[m:]
+		}
+	}
+}
+
+func (sd *Service) unmarshalSeed(b []byte, sb *strs.Builder, pf *File, pd protoreflect.Descriptor, i int) {
+	sd.L0.ParentFile = pf
+	sd.L0.Parent = pd
+	sd.L0.Index = i
+
+	for len(b) > 0 {
+		num, typ, n := protowire.ConsumeTag(b)
+		b = b[n:]
+		switch typ {
+		case protowire.BytesType:
+			v, m := protowire.ConsumeBytes(b)
+			b = b[m:]
+			switch num {
+			case genid.ServiceDescriptorProto_Name_field_number:
+				sd.L0.FullName = appendFullName(sb, pd.FullName(), v)
+			}
+		default:
+			m := protowire.ConsumeFieldValue(num, typ, b)
+			b = b[m:]
+		}
+	}
+}
+
+var nameBuilderPool = sync.Pool{
+	New: func() any { return new(strs.Builder) },
+}
+
+func getBuilder() *strs.Builder {
+	return nameBuilderPool.Get().(*strs.Builder)
+}
+func putBuilder(b *strs.Builder) {
+	nameBuilderPool.Put(b)
+}
+
+// makeFullName converts b to a protoreflect.FullName,
+// where b must start with a leading dot.
+func makeFullName(sb *strs.Builder, b []byte) protoreflect.FullName {
+	if len(b) == 0 || b[0] != '.' {
+		panic("name reference must be fully qualified")
+	}
+	return protoreflect.FullName(sb.MakeString(b[1:]))
+}
+
+func appendFullName(sb *strs.Builder, prefix protoreflect.FullName, suffix []byte) protoreflect.FullName {
+	return sb.AppendFullName(prefix, protoreflect.Name(strs.UnsafeString(suffix)))
+}

e2e/vendor/google.golang.org/protobuf/internal/filedesc/desc_lazy.go

@@ -0,0 +1,694 @@
+// 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 filedesc
+
+import (
+	"reflect"
+	"sync"
+
+	"google.golang.org/protobuf/encoding/protowire"
+	"google.golang.org/protobuf/internal/descopts"
+	"google.golang.org/protobuf/internal/genid"
+	"google.golang.org/protobuf/internal/strs"
+	"google.golang.org/protobuf/proto"
+	"google.golang.org/protobuf/reflect/protoreflect"
+)
+
+func (fd *File) lazyRawInit() {
+	fd.unmarshalFull(fd.builder.RawDescriptor)
+	fd.resolveMessages()
+	fd.resolveExtensions()
+	fd.resolveServices()
+}
+
+func (file *File) resolveMessages() {
+	var depIdx int32
+	for i := range file.allMessages {
+		md := &file.allMessages[i]
+
+		// Resolve message field dependencies.
+		for j := range md.L2.Fields.List {
+			fd := &md.L2.Fields.List[j]
+
+			// Resolve message field dependency.
+			switch fd.L1.Kind {
+			case protoreflect.EnumKind:
+				fd.L1.Enum = file.resolveEnumDependency(fd.L1.Enum, listFieldDeps, depIdx)
+				depIdx++
+			case protoreflect.MessageKind, protoreflect.GroupKind:
+				fd.L1.Message = file.resolveMessageDependency(fd.L1.Message, listFieldDeps, depIdx)
+				depIdx++
+				if fd.L1.Kind == protoreflect.GroupKind && (fd.IsMap() || fd.IsMapEntry()) {
+					// A map field might inherit delimited encoding from a file-wide default feature.
+					// But maps never actually use delimited encoding. (At least for now...)
+					fd.L1.Kind = protoreflect.MessageKind
+				}
+			}
+
+			// Default is resolved here since it depends on Enum being resolved.
+			if v := fd.L1.Default.val; v.IsValid() {
+				fd.L1.Default = unmarshalDefault(v.Bytes(), fd.L1.Kind, file, fd.L1.Enum)
+			}
+		}
+	}
+}
+
+func (file *File) resolveExtensions() {
+	var depIdx int32
+	for i := range file.allExtensions {
+		xd := &file.allExtensions[i]
+
+		// Resolve extension field dependency.
+		switch xd.L1.Kind {
+		case protoreflect.EnumKind:
+			xd.L2.Enum = file.resolveEnumDependency(xd.L2.Enum, listExtDeps, depIdx)
+			depIdx++
+		case protoreflect.MessageKind, protoreflect.GroupKind:
+			xd.L2.Message = file.resolveMessageDependency(xd.L2.Message, listExtDeps, depIdx)
+			depIdx++
+		}
+
+		// Default is resolved here since it depends on Enum being resolved.
+		if v := xd.L2.Default.val; v.IsValid() {
+			xd.L2.Default = unmarshalDefault(v.Bytes(), xd.L1.Kind, file, xd.L2.Enum)
+		}
+	}
+}
+
+func (file *File) resolveServices() {
+	var depIdx int32
+	for i := range file.allServices {
+		sd := &file.allServices[i]
+
+		// Resolve method dependencies.
+		for j := range sd.L2.Methods.List {
+			md := &sd.L2.Methods.List[j]
+			md.L1.Input = file.resolveMessageDependency(md.L1.Input, listMethInDeps, depIdx)
+			md.L1.Output = file.resolveMessageDependency(md.L1.Output, listMethOutDeps, depIdx)
+			depIdx++
+		}
+	}
+}
+
+func (file *File) resolveEnumDependency(ed protoreflect.EnumDescriptor, i, j int32) protoreflect.EnumDescriptor {
+	r := file.builder.FileRegistry
+	if r, ok := r.(resolverByIndex); ok {
+		if ed2 := r.FindEnumByIndex(i, j, file.allEnums, file.allMessages); ed2 != nil {
+			return ed2
+		}
+	}
+	for i := range file.allEnums {
+		if ed2 := &file.allEnums[i]; ed2.L0.FullName == ed.FullName() {
+			return ed2
+		}
+	}
+	if d, _ := r.FindDescriptorByName(ed.FullName()); d != nil {
+		return d.(protoreflect.EnumDescriptor)
+	}
+	return ed
+}
+
+func (file *File) resolveMessageDependency(md protoreflect.MessageDescriptor, i, j int32) protoreflect.MessageDescriptor {
+	r := file.builder.FileRegistry
+	if r, ok := r.(resolverByIndex); ok {
+		if md2 := r.FindMessageByIndex(i, j, file.allEnums, file.allMessages); md2 != nil {
+			return md2
+		}
+	}
+	for i := range file.allMessages {
+		if md2 := &file.allMessages[i]; md2.L0.FullName == md.FullName() {
+			return md2
+		}
+	}
+	if d, _ := r.FindDescriptorByName(md.FullName()); d != nil {
+		return d.(protoreflect.MessageDescriptor)
+	}
+	return md
+}
+
+func (fd *File) unmarshalFull(b []byte) {
+	sb := getBuilder()
+	defer putBuilder(sb)
+
+	var enumIdx, messageIdx, extensionIdx, serviceIdx int
+	var rawOptions []byte
+	fd.L2 = new(FileL2)
+	for len(b) > 0 {
+		num, typ, n := protowire.ConsumeTag(b)
+		b = b[n:]
+		switch typ {
+		case protowire.VarintType:
+			v, m := protowire.ConsumeVarint(b)
+			b = b[m:]
+			switch num {
+			case genid.FileDescriptorProto_PublicDependency_field_number:
+				fd.L2.Imports[v].IsPublic = true
+			}
+		case protowire.BytesType:
+			v, m := protowire.ConsumeBytes(b)
+			b = b[m:]
+			switch num {
+			case genid.FileDescriptorProto_Dependency_field_number:
+				path := sb.MakeString(v)
+				imp, _ := fd.builder.FileRegistry.FindFileByPath(path)
+				if imp == nil {
+					imp = PlaceholderFile(path)
+				}
+				fd.L2.Imports = append(fd.L2.Imports, protoreflect.FileImport{FileDescriptor: imp})
+			case genid.FileDescriptorProto_EnumType_field_number:
+				fd.L1.Enums.List[enumIdx].unmarshalFull(v, sb)
+				enumIdx++
+			case genid.FileDescriptorProto_MessageType_field_number:
+				fd.L1.Messages.List[messageIdx].unmarshalFull(v, sb)
+				messageIdx++
+			case genid.FileDescriptorProto_Extension_field_number:
+				fd.L1.Extensions.List[extensionIdx].unmarshalFull(v, sb)
+				extensionIdx++
+			case genid.FileDescriptorProto_Service_field_number:
+				fd.L1.Services.List[serviceIdx].unmarshalFull(v, sb)
+				serviceIdx++
+			case genid.FileDescriptorProto_Options_field_number:
+				rawOptions = appendOptions(rawOptions, v)
+			}
+		default:
+			m := protowire.ConsumeFieldValue(num, typ, b)
+			b = b[m:]
+		}
+	}
+	fd.L2.Options = fd.builder.optionsUnmarshaler(&descopts.File, rawOptions)
+}
+
+func (ed *Enum) unmarshalFull(b []byte, sb *strs.Builder) {
+	var rawValues [][]byte
+	var rawOptions []byte
+	if !ed.L1.eagerValues {
+		ed.L2 = new(EnumL2)
+	}
+	for len(b) > 0 {
+		num, typ, n := protowire.ConsumeTag(b)
+		b = b[n:]
+		switch typ {
+		case protowire.BytesType:
+			v, m := protowire.ConsumeBytes(b)
+			b = b[m:]
+			switch num {
+			case genid.EnumDescriptorProto_Value_field_number:
+				rawValues = append(rawValues, v)
+			case genid.EnumDescriptorProto_ReservedName_field_number:
+				ed.L2.ReservedNames.List = append(ed.L2.ReservedNames.List, protoreflect.Name(sb.MakeString(v)))
+			case genid.EnumDescriptorProto_ReservedRange_field_number:
+				ed.L2.ReservedRanges.List = append(ed.L2.ReservedRanges.List, unmarshalEnumReservedRange(v))
+			case genid.EnumDescriptorProto_Options_field_number:
+				rawOptions = appendOptions(rawOptions, v)
+			}
+		default:
+			m := protowire.ConsumeFieldValue(num, typ, b)
+			b = b[m:]
+		}
+	}
+	if !ed.L1.eagerValues && len(rawValues) > 0 {
+		ed.L2.Values.List = make([]EnumValue, len(rawValues))
+		for i, b := range rawValues {
+			ed.L2.Values.List[i].unmarshalFull(b, sb, ed.L0.ParentFile, ed, i)
+		}
+	}
+	ed.L2.Options = ed.L0.ParentFile.builder.optionsUnmarshaler(&descopts.Enum, rawOptions)
+}
+
+func unmarshalEnumReservedRange(b []byte) (r [2]protoreflect.EnumNumber) {
+	for len(b) > 0 {
+		num, typ, n := protowire.ConsumeTag(b)
+		b = b[n:]
+		switch typ {
+		case protowire.VarintType:
+			v, m := protowire.ConsumeVarint(b)
+			b = b[m:]
+			switch num {
+			case genid.EnumDescriptorProto_EnumReservedRange_Start_field_number:
+				r[0] = protoreflect.EnumNumber(v)
+			case genid.EnumDescriptorProto_EnumReservedRange_End_field_number:
+				r[1] = protoreflect.EnumNumber(v)
+			}
+		default:
+			m := protowire.ConsumeFieldValue(num, typ, b)
+			b = b[m:]
+		}
+	}
+	return r
+}
+
+func (vd *EnumValue) unmarshalFull(b []byte, sb *strs.Builder, pf *File, pd protoreflect.Descriptor, i int) {
+	vd.L0.ParentFile = pf
+	vd.L0.Parent = pd
+	vd.L0.Index = i
+
+	var rawOptions []byte
+	for len(b) > 0 {
+		num, typ, n := protowire.ConsumeTag(b)
+		b = b[n:]
+		switch typ {
+		case protowire.VarintType:
+			v, m := protowire.ConsumeVarint(b)
+			b = b[m:]
+			switch num {
+			case genid.EnumValueDescriptorProto_Number_field_number:
+				vd.L1.Number = protoreflect.EnumNumber(v)
+			}
+		case protowire.BytesType:
+			v, m := protowire.ConsumeBytes(b)
+			b = b[m:]
+			switch num {
+			case genid.EnumValueDescriptorProto_Name_field_number:
+				// NOTE: Enum values are in the same scope as the enum parent.
+				vd.L0.FullName = appendFullName(sb, pd.Parent().FullName(), v)
+			case genid.EnumValueDescriptorProto_Options_field_number:
+				rawOptions = appendOptions(rawOptions, v)
+			}
+		default:
+			m := protowire.ConsumeFieldValue(num, typ, b)
+			b = b[m:]
+		}
+	}
+	vd.L1.Options = pf.builder.optionsUnmarshaler(&descopts.EnumValue, rawOptions)
+}
+
+func (md *Message) unmarshalFull(b []byte, sb *strs.Builder) {
+	var rawFields, rawOneofs [][]byte
+	var enumIdx, messageIdx, extensionIdx int
+	var rawOptions []byte
+	md.L2 = new(MessageL2)
+	for len(b) > 0 {
+		num, typ, n := protowire.ConsumeTag(b)
+		b = b[n:]
+		switch typ {
+		case protowire.BytesType:
+			v, m := protowire.ConsumeBytes(b)
+			b = b[m:]
+			switch num {
+			case genid.DescriptorProto_Field_field_number:
+				rawFields = append(rawFields, v)
+			case genid.DescriptorProto_OneofDecl_field_number:
+				rawOneofs = append(rawOneofs, v)
+			case genid.DescriptorProto_ReservedName_field_number:
+				md.L2.ReservedNames.List = append(md.L2.ReservedNames.List, protoreflect.Name(sb.MakeString(v)))
+			case genid.DescriptorProto_ReservedRange_field_number:
+				md.L2.ReservedRanges.List = append(md.L2.ReservedRanges.List, unmarshalMessageReservedRange(v))
+			case genid.DescriptorProto_ExtensionRange_field_number:
+				r, rawOptions := unmarshalMessageExtensionRange(v)
+				opts := md.L0.ParentFile.builder.optionsUnmarshaler(&descopts.ExtensionRange, rawOptions)
+				md.L2.ExtensionRanges.List = append(md.L2.ExtensionRanges.List, r)
+				md.L2.ExtensionRangeOptions = append(md.L2.ExtensionRangeOptions, opts)
+			case genid.DescriptorProto_EnumType_field_number:
+				md.L1.Enums.List[enumIdx].unmarshalFull(v, sb)
+				enumIdx++
+			case genid.DescriptorProto_NestedType_field_number:
+				md.L1.Messages.List[messageIdx].unmarshalFull(v, sb)
+				messageIdx++
+			case genid.DescriptorProto_Extension_field_number:
+				md.L1.Extensions.List[extensionIdx].unmarshalFull(v, sb)
+				extensionIdx++
+			case genid.DescriptorProto_Options_field_number:
+				md.unmarshalOptions(v)
+				rawOptions = appendOptions(rawOptions, v)
+			}
+		default:
+			m := protowire.ConsumeFieldValue(num, typ, b)
+			b = b[m:]
+		}
+	}
+	if len(rawFields) > 0 || len(rawOneofs) > 0 {
+		md.L2.Fields.List = make([]Field, len(rawFields))
+		md.L2.Oneofs.List = make([]Oneof, len(rawOneofs))
+		for i, b := range rawFields {
+			fd := &md.L2.Fields.List[i]
+			fd.unmarshalFull(b, sb, md.L0.ParentFile, md, i)
+			if fd.L1.Cardinality == protoreflect.Required {
+				md.L2.RequiredNumbers.List = append(md.L2.RequiredNumbers.List, fd.L1.Number)
+			}
+		}
+		for i, b := range rawOneofs {
+			od := &md.L2.Oneofs.List[i]
+			od.unmarshalFull(b, sb, md.L0.ParentFile, md, i)
+		}
+	}
+	md.L2.Options = md.L0.ParentFile.builder.optionsUnmarshaler(&descopts.Message, rawOptions)
+}
+
+func (md *Message) unmarshalOptions(b []byte) {
+	for len(b) > 0 {
+		num, typ, n := protowire.ConsumeTag(b)
+		b = b[n:]
+		switch typ {
+		case protowire.VarintType:
+			v, m := protowire.ConsumeVarint(b)
+			b = b[m:]
+			switch num {
+			case genid.MessageOptions_MapEntry_field_number:
+				md.L1.IsMapEntry = protowire.DecodeBool(v)
+			case genid.MessageOptions_MessageSetWireFormat_field_number:
+				md.L1.IsMessageSet = protowire.DecodeBool(v)
+			}
+		default:
+			m := protowire.ConsumeFieldValue(num, typ, b)
+			b = b[m:]
+		}
+	}
+}
+
+func unmarshalMessageReservedRange(b []byte) (r [2]protoreflect.FieldNumber) {
+	for len(b) > 0 {
+		num, typ, n := protowire.ConsumeTag(b)
+		b = b[n:]
+		switch typ {
+		case protowire.VarintType:
+			v, m := protowire.ConsumeVarint(b)
+			b = b[m:]
+			switch num {
+			case genid.DescriptorProto_ReservedRange_Start_field_number:
+				r[0] = protoreflect.FieldNumber(v)
+			case genid.DescriptorProto_ReservedRange_End_field_number:
+				r[1] = protoreflect.FieldNumber(v)
+			}
+		default:
+			m := protowire.ConsumeFieldValue(num, typ, b)
+			b = b[m:]
+		}
+	}
+	return r
+}
+
+func unmarshalMessageExtensionRange(b []byte) (r [2]protoreflect.FieldNumber, rawOptions []byte) {
+	for len(b) > 0 {
+		num, typ, n := protowire.ConsumeTag(b)
+		b = b[n:]
+		switch typ {
+		case protowire.VarintType:
+			v, m := protowire.ConsumeVarint(b)
+			b = b[m:]
+			switch num {
+			case genid.DescriptorProto_ExtensionRange_Start_field_number:
+				r[0] = protoreflect.FieldNumber(v)
+			case genid.DescriptorProto_ExtensionRange_End_field_number:
+				r[1] = protoreflect.FieldNumber(v)
+			}
+		case protowire.BytesType:
+			v, m := protowire.ConsumeBytes(b)
+			b = b[m:]
+			switch num {
+			case genid.DescriptorProto_ExtensionRange_Options_field_number:
+				rawOptions = appendOptions(rawOptions, v)
+			}
+		default:
+			m := protowire.ConsumeFieldValue(num, typ, b)
+			b = b[m:]
+		}
+	}
+	return r, rawOptions
+}
+
+func (fd *Field) unmarshalFull(b []byte, sb *strs.Builder, pf *File, pd protoreflect.Descriptor, i int) {
+	fd.L0.ParentFile = pf
+	fd.L0.Parent = pd
+	fd.L0.Index = i
+	fd.L1.EditionFeatures = featuresFromParentDesc(fd.Parent())
+
+	var rawTypeName []byte
+	var rawOptions []byte
+	for len(b) > 0 {
+		num, typ, n := protowire.ConsumeTag(b)
+		b = b[n:]
+		switch typ {
+		case protowire.VarintType:
+			v, m := protowire.ConsumeVarint(b)
+			b = b[m:]
+			switch num {
+			case genid.FieldDescriptorProto_Number_field_number:
+				fd.L1.Number = protoreflect.FieldNumber(v)
+			case genid.FieldDescriptorProto_Label_field_number:
+				fd.L1.Cardinality = protoreflect.Cardinality(v)
+			case genid.FieldDescriptorProto_Type_field_number:
+				fd.L1.Kind = protoreflect.Kind(v)
+			case genid.FieldDescriptorProto_OneofIndex_field_number:
+				// In Message.unmarshalFull, we allocate slices for both
+				// the field and oneof descriptors before unmarshaling either
+				// of them. This ensures pointers to slice elements are stable.
+				od := &pd.(*Message).L2.Oneofs.List[v]
+				od.L1.Fields.List = append(od.L1.Fields.List, fd)
+				if fd.L1.ContainingOneof != nil {
+					panic("oneof type already set")
+				}
+				fd.L1.ContainingOneof = od
+			case genid.FieldDescriptorProto_Proto3Optional_field_number:
+				fd.L1.IsProto3Optional = protowire.DecodeBool(v)
+			}
+		case protowire.BytesType:
+			v, m := protowire.ConsumeBytes(b)
+			b = b[m:]
+			switch num {
+			case genid.FieldDescriptorProto_Name_field_number:
+				fd.L0.FullName = appendFullName(sb, pd.FullName(), v)
+			case genid.FieldDescriptorProto_JsonName_field_number:
+				fd.L1.StringName.InitJSON(sb.MakeString(v))
+			case genid.FieldDescriptorProto_DefaultValue_field_number:
+				fd.L1.Default.val = protoreflect.ValueOfBytes(v) // temporarily store as bytes; later resolved in resolveMessages
+			case genid.FieldDescriptorProto_TypeName_field_number:
+				rawTypeName = v
+			case genid.FieldDescriptorProto_Options_field_number:
+				fd.unmarshalOptions(v)
+				rawOptions = appendOptions(rawOptions, v)
+			}
+		default:
+			m := protowire.ConsumeFieldValue(num, typ, b)
+			b = b[m:]
+		}
+	}
+	if fd.L1.Kind == protoreflect.MessageKind && fd.L1.EditionFeatures.IsDelimitedEncoded {
+		fd.L1.Kind = protoreflect.GroupKind
+	}
+	if fd.L1.EditionFeatures.IsLegacyRequired {
+		fd.L1.Cardinality = protoreflect.Required
+	}
+	if rawTypeName != nil {
+		name := makeFullName(sb, rawTypeName)
+		switch fd.L1.Kind {
+		case protoreflect.EnumKind:
+			fd.L1.Enum = PlaceholderEnum(name)
+		case protoreflect.MessageKind, protoreflect.GroupKind:
+			fd.L1.Message = PlaceholderMessage(name)
+		}
+	}
+	fd.L1.Options = pf.builder.optionsUnmarshaler(&descopts.Field, rawOptions)
+}
+
+func (fd *Field) unmarshalOptions(b []byte) {
+	const FieldOptions_EnforceUTF8 = 13
+
+	for len(b) > 0 {
+		num, typ, n := protowire.ConsumeTag(b)
+		b = b[n:]
+		switch typ {
+		case protowire.VarintType:
+			v, m := protowire.ConsumeVarint(b)
+			b = b[m:]
+			switch num {
+			case genid.FieldOptions_Packed_field_number:
+				fd.L1.EditionFeatures.IsPacked = protowire.DecodeBool(v)
+			case genid.FieldOptions_Lazy_field_number:
+				fd.L1.IsLazy = protowire.DecodeBool(v)
+			case FieldOptions_EnforceUTF8:
+				fd.L1.EditionFeatures.IsUTF8Validated = protowire.DecodeBool(v)
+			}
+		case protowire.BytesType:
+			v, m := protowire.ConsumeBytes(b)
+			b = b[m:]
+			switch num {
+			case genid.FieldOptions_Features_field_number:
+				fd.L1.EditionFeatures = unmarshalFeatureSet(v, fd.L1.EditionFeatures)
+			}
+		default:
+			m := protowire.ConsumeFieldValue(num, typ, b)
+			b = b[m:]
+		}
+	}
+}
+
+func (od *Oneof) unmarshalFull(b []byte, sb *strs.Builder, pf *File, pd protoreflect.Descriptor, i int) {
+	od.L0.ParentFile = pf
+	od.L0.Parent = pd
+	od.L0.Index = i
+
+	var rawOptions []byte
+	for len(b) > 0 {
+		num, typ, n := protowire.ConsumeTag(b)
+		b = b[n:]
+		switch typ {
+		case protowire.BytesType:
+			v, m := protowire.ConsumeBytes(b)
+			b = b[m:]
+			switch num {
+			case genid.OneofDescriptorProto_Name_field_number:
+				od.L0.FullName = appendFullName(sb, pd.FullName(), v)
+			case genid.OneofDescriptorProto_Options_field_number:
+				rawOptions = appendOptions(rawOptions, v)
+			}
+		default:
+			m := protowire.ConsumeFieldValue(num, typ, b)
+			b = b[m:]
+		}
+	}
+	od.L1.Options = pf.builder.optionsUnmarshaler(&descopts.Oneof, rawOptions)
+}
+
+func (xd *Extension) unmarshalFull(b []byte, sb *strs.Builder) {
+	var rawTypeName []byte
+	var rawOptions []byte
+	xd.L2 = new(ExtensionL2)
+	for len(b) > 0 {
+		num, typ, n := protowire.ConsumeTag(b)
+		b = b[n:]
+		switch typ {
+		case protowire.VarintType:
+			v, m := protowire.ConsumeVarint(b)
+			b = b[m:]
+			switch num {
+			case genid.FieldDescriptorProto_Proto3Optional_field_number:
+				xd.L2.IsProto3Optional = protowire.DecodeBool(v)
+			}
+		case protowire.BytesType:
+			v, m := protowire.ConsumeBytes(b)
+			b = b[m:]
+			switch num {
+			case genid.FieldDescriptorProto_JsonName_field_number:
+				xd.L2.StringName.InitJSON(sb.MakeString(v))
+			case genid.FieldDescriptorProto_DefaultValue_field_number:
+				xd.L2.Default.val = protoreflect.ValueOfBytes(v) // temporarily store as bytes; later resolved in resolveExtensions
+			case genid.FieldDescriptorProto_TypeName_field_number:
+				rawTypeName = v
+			case genid.FieldDescriptorProto_Options_field_number:
+				rawOptions = appendOptions(rawOptions, v)
+			}
+		default:
+			m := protowire.ConsumeFieldValue(num, typ, b)
+			b = b[m:]
+		}
+	}
+	if rawTypeName != nil {
+		name := makeFullName(sb, rawTypeName)
+		switch xd.L1.Kind {
+		case protoreflect.EnumKind:
+			xd.L2.Enum = PlaceholderEnum(name)
+		case protoreflect.MessageKind, protoreflect.GroupKind:
+			xd.L2.Message = PlaceholderMessage(name)
+		}
+	}
+	xd.L2.Options = xd.L0.ParentFile.builder.optionsUnmarshaler(&descopts.Field, rawOptions)
+}
+
+func (sd *Service) unmarshalFull(b []byte, sb *strs.Builder) {
+	var rawMethods [][]byte
+	var rawOptions []byte
+	sd.L2 = new(ServiceL2)
+	for len(b) > 0 {
+		num, typ, n := protowire.ConsumeTag(b)
+		b = b[n:]
+		switch typ {
+		case protowire.BytesType:
+			v, m := protowire.ConsumeBytes(b)
+			b = b[m:]
+			switch num {
+			case genid.ServiceDescriptorProto_Method_field_number:
+				rawMethods = append(rawMethods, v)
+			case genid.ServiceDescriptorProto_Options_field_number:
+				rawOptions = appendOptions(rawOptions, v)
+			}
+		default:
+			m := protowire.ConsumeFieldValue(num, typ, b)
+			b = b[m:]
+		}
+	}
+	if len(rawMethods) > 0 {
+		sd.L2.Methods.List = make([]Method, len(rawMethods))
+		for i, b := range rawMethods {
+			sd.L2.Methods.List[i].unmarshalFull(b, sb, sd.L0.ParentFile, sd, i)
+		}
+	}
+	sd.L2.Options = sd.L0.ParentFile.builder.optionsUnmarshaler(&descopts.Service, rawOptions)
+}
+
+func (md *Method) unmarshalFull(b []byte, sb *strs.Builder, pf *File, pd protoreflect.Descriptor, i int) {
+	md.L0.ParentFile = pf
+	md.L0.Parent = pd
+	md.L0.Index = i
+
+	var rawOptions []byte
+	for len(b) > 0 {
+		num, typ, n := protowire.ConsumeTag(b)
+		b = b[n:]
+		switch typ {
+		case protowire.VarintType:
+			v, m := protowire.ConsumeVarint(b)
+			b = b[m:]
+			switch num {
+			case genid.MethodDescriptorProto_ClientStreaming_field_number:
+				md.L1.IsStreamingClient = protowire.DecodeBool(v)
+			case genid.MethodDescriptorProto_ServerStreaming_field_number:
+				md.L1.IsStreamingServer = protowire.DecodeBool(v)
+			}
+		case protowire.BytesType:
+			v, m := protowire.ConsumeBytes(b)
+			b = b[m:]
+			switch num {
+			case genid.MethodDescriptorProto_Name_field_number:
+				md.L0.FullName = appendFullName(sb, pd.FullName(), v)
+			case genid.MethodDescriptorProto_InputType_field_number:
+				md.L1.Input = PlaceholderMessage(makeFullName(sb, v))
+			case genid.MethodDescriptorProto_OutputType_field_number:
+				md.L1.Output = PlaceholderMessage(makeFullName(sb, v))
+			case genid.MethodDescriptorProto_Options_field_number:
+				rawOptions = appendOptions(rawOptions, v)
+			}
+		default:
+			m := protowire.ConsumeFieldValue(num, typ, b)
+			b = b[m:]
+		}
+	}
+	md.L1.Options = pf.builder.optionsUnmarshaler(&descopts.Method, rawOptions)
+}
+
+// appendOptions appends src to dst, where the returned slice is never nil.
+// This is necessary to distinguish between empty and unpopulated options.
+func appendOptions(dst, src []byte) []byte {
+	if dst == nil {
+		dst = []byte{}
+	}
+	return append(dst, src...)
+}
+
+// optionsUnmarshaler constructs a lazy unmarshal function for an options message.
+//
+// The type of message to unmarshal to is passed as a pointer since the
+// vars in descopts may not yet be populated at the time this function is called.
+func (db *Builder) optionsUnmarshaler(p *protoreflect.ProtoMessage, b []byte) func() protoreflect.ProtoMessage {
+	if b == nil {
+		return nil
+	}
+	var opts protoreflect.ProtoMessage
+	var once sync.Once
+	return func() protoreflect.ProtoMessage {
+		once.Do(func() {
+			if *p == nil {
+				panic("Descriptor.Options called without importing the descriptor package")
+			}
+			opts = reflect.New(reflect.TypeOf(*p).Elem()).Interface().(protoreflect.ProtoMessage)
+			if err := (proto.UnmarshalOptions{
+				AllowPartial: true,
+				Resolver:     db.TypeResolver,
+			}).Unmarshal(b, opts); err != nil {
+				panic(err)
+			}
+		})
+		return opts
+	}
+}

e2e/vendor/google.golang.org/protobuf/internal/filedesc/desc_list.go

@@ -0,0 +1,457 @@
+// 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 filedesc
+
+import (
+	"fmt"
+	"math"
+	"sort"
+	"sync"
+
+	"google.golang.org/protobuf/internal/genid"
+
+	"google.golang.org/protobuf/encoding/protowire"
+	"google.golang.org/protobuf/internal/descfmt"
+	"google.golang.org/protobuf/internal/errors"
+	"google.golang.org/protobuf/internal/pragma"
+	"google.golang.org/protobuf/reflect/protoreflect"
+)
+
+type FileImports []protoreflect.FileImport
+
+func (p *FileImports) Len() int                            { return len(*p) }
+func (p *FileImports) Get(i int) protoreflect.FileImport   { return (*p)[i] }
+func (p *FileImports) Format(s fmt.State, r rune)          { descfmt.FormatList(s, r, p) }
+func (p *FileImports) ProtoInternal(pragma.DoNotImplement) {}
+
+type Names struct {
+	List []protoreflect.Name
+	once sync.Once
+	has  map[protoreflect.Name]int // protected by once
+}
+
+func (p *Names) Len() int                            { return len(p.List) }
+func (p *Names) Get(i int) protoreflect.Name         { return p.List[i] }
+func (p *Names) Has(s protoreflect.Name) bool        { return p.lazyInit().has[s] > 0 }
+func (p *Names) Format(s fmt.State, r rune)          { descfmt.FormatList(s, r, p) }
+func (p *Names) ProtoInternal(pragma.DoNotImplement) {}
+func (p *Names) lazyInit() *Names {
+	p.once.Do(func() {
+		if len(p.List) > 0 {
+			p.has = make(map[protoreflect.Name]int, len(p.List))
+			for _, s := range p.List {
+				p.has[s] = p.has[s] + 1
+			}
+		}
+	})
+	return p
+}
+
+// CheckValid reports any errors with the set of names with an error message
+// that completes the sentence: "ranges is invalid because it has ..."
+func (p *Names) CheckValid() error {
+	for s, n := range p.lazyInit().has {
+		switch {
+		case n > 1:
+			return errors.New("duplicate name: %q", s)
+		case false && !s.IsValid():
+			// NOTE: The C++ implementation does not validate the identifier.
+			// See https://github.com/protocolbuffers/protobuf/issues/6335.
+			return errors.New("invalid name: %q", s)
+		}
+	}
+	return nil
+}
+
+type EnumRanges struct {
+	List   [][2]protoreflect.EnumNumber // start inclusive; end inclusive
+	once   sync.Once
+	sorted [][2]protoreflect.EnumNumber // protected by once
+}
+
+func (p *EnumRanges) Len() int                             { return len(p.List) }
+func (p *EnumRanges) Get(i int) [2]protoreflect.EnumNumber { return p.List[i] }
+func (p *EnumRanges) Has(n protoreflect.EnumNumber) bool {
+	for ls := p.lazyInit().sorted; len(ls) > 0; {
+		i := len(ls) / 2
+		switch r := enumRange(ls[i]); {
+		case n < r.Start():
+			ls = ls[:i] // search lower
+		case n > r.End():
+			ls = ls[i+1:] // search upper
+		default:
+			return true
+		}
+	}
+	return false
+}
+func (p *EnumRanges) Format(s fmt.State, r rune)          { descfmt.FormatList(s, r, p) }
+func (p *EnumRanges) ProtoInternal(pragma.DoNotImplement) {}
+func (p *EnumRanges) lazyInit() *EnumRanges {
+	p.once.Do(func() {
+		p.sorted = append(p.sorted, p.List...)
+		sort.Slice(p.sorted, func(i, j int) bool {
+			return p.sorted[i][0] < p.sorted[j][0]
+		})
+	})
+	return p
+}
+
+// CheckValid reports any errors with the set of names with an error message
+// that completes the sentence: "ranges is invalid because it has ..."
+func (p *EnumRanges) CheckValid() error {
+	var rp enumRange
+	for i, r := range p.lazyInit().sorted {
+		r := enumRange(r)
+		switch {
+		case !(r.Start() <= r.End()):
+			return errors.New("invalid range: %v", r)
+		case !(rp.End() < r.Start()) && i > 0:
+			return errors.New("overlapping ranges: %v with %v", rp, r)
+		}
+		rp = r
+	}
+	return nil
+}
+
+type enumRange [2]protoreflect.EnumNumber
+
+func (r enumRange) Start() protoreflect.EnumNumber { return r[0] } // inclusive
+func (r enumRange) End() protoreflect.EnumNumber   { return r[1] } // inclusive
+func (r enumRange) String() string {
+	if r.Start() == r.End() {
+		return fmt.Sprintf("%d", r.Start())
+	}
+	return fmt.Sprintf("%d to %d", r.Start(), r.End())
+}
+
+type FieldRanges struct {
+	List   [][2]protoreflect.FieldNumber // start inclusive; end exclusive
+	once   sync.Once
+	sorted [][2]protoreflect.FieldNumber // protected by once
+}
+
+func (p *FieldRanges) Len() int                              { return len(p.List) }
+func (p *FieldRanges) Get(i int) [2]protoreflect.FieldNumber { return p.List[i] }
+func (p *FieldRanges) Has(n protoreflect.FieldNumber) bool {
+	for ls := p.lazyInit().sorted; len(ls) > 0; {
+		i := len(ls) / 2
+		switch r := fieldRange(ls[i]); {
+		case n < r.Start():
+			ls = ls[:i] // search lower
+		case n > r.End():
+			ls = ls[i+1:] // search upper
+		default:
+			return true
+		}
+	}
+	return false
+}
+func (p *FieldRanges) Format(s fmt.State, r rune)          { descfmt.FormatList(s, r, p) }
+func (p *FieldRanges) ProtoInternal(pragma.DoNotImplement) {}
+func (p *FieldRanges) lazyInit() *FieldRanges {
+	p.once.Do(func() {
+		p.sorted = append(p.sorted, p.List...)
+		sort.Slice(p.sorted, func(i, j int) bool {
+			return p.sorted[i][0] < p.sorted[j][0]
+		})
+	})
+	return p
+}
+
+// CheckValid reports any errors with the set of ranges with an error message
+// that completes the sentence: "ranges is invalid because it has ..."
+func (p *FieldRanges) CheckValid(isMessageSet bool) error {
+	var rp fieldRange
+	for i, r := range p.lazyInit().sorted {
+		r := fieldRange(r)
+		switch {
+		case !isValidFieldNumber(r.Start(), isMessageSet):
+			return errors.New("invalid field number: %d", r.Start())
+		case !isValidFieldNumber(r.End(), isMessageSet):
+			return errors.New("invalid field number: %d", r.End())
+		case !(r.Start() <= r.End()):
+			return errors.New("invalid range: %v", r)
+		case !(rp.End() < r.Start()) && i > 0:
+			return errors.New("overlapping ranges: %v with %v", rp, r)
+		}
+		rp = r
+	}
+	return nil
+}
+
+// isValidFieldNumber reports whether the field number is valid.
+// Unlike the FieldNumber.IsValid method, it allows ranges that cover the
+// reserved number range.
+func isValidFieldNumber(n protoreflect.FieldNumber, isMessageSet bool) bool {
+	return protowire.MinValidNumber <= n && (n <= protowire.MaxValidNumber || isMessageSet)
+}
+
+// CheckOverlap reports an error if p and q overlap.
+func (p *FieldRanges) CheckOverlap(q *FieldRanges) error {
+	rps := p.lazyInit().sorted
+	rqs := q.lazyInit().sorted
+	for pi, qi := 0, 0; pi < len(rps) && qi < len(rqs); {
+		rp := fieldRange(rps[pi])
+		rq := fieldRange(rqs[qi])
+		if !(rp.End() < rq.Start() || rq.End() < rp.Start()) {
+			return errors.New("overlapping ranges: %v with %v", rp, rq)
+		}
+		if rp.Start() < rq.Start() {
+			pi++
+		} else {
+			qi++
+		}
+	}
+	return nil
+}
+
+type fieldRange [2]protoreflect.FieldNumber
+
+func (r fieldRange) Start() protoreflect.FieldNumber { return r[0] }     // inclusive
+func (r fieldRange) End() protoreflect.FieldNumber   { return r[1] - 1 } // inclusive
+func (r fieldRange) String() string {
+	if r.Start() == r.End() {
+		return fmt.Sprintf("%d", r.Start())
+	}
+	return fmt.Sprintf("%d to %d", r.Start(), r.End())
+}
+
+type FieldNumbers struct {
+	List []protoreflect.FieldNumber
+	once sync.Once
+	has  map[protoreflect.FieldNumber]struct{} // protected by once
+}
+
+func (p *FieldNumbers) Len() int                           { return len(p.List) }
+func (p *FieldNumbers) Get(i int) protoreflect.FieldNumber { return p.List[i] }
+func (p *FieldNumbers) Has(n protoreflect.FieldNumber) bool {
+	p.once.Do(func() {
+		if len(p.List) > 0 {
+			p.has = make(map[protoreflect.FieldNumber]struct{}, len(p.List))
+			for _, n := range p.List {
+				p.has[n] = struct{}{}
+			}
+		}
+	})
+	_, ok := p.has[n]
+	return ok
+}
+func (p *FieldNumbers) Format(s fmt.State, r rune)          { descfmt.FormatList(s, r, p) }
+func (p *FieldNumbers) ProtoInternal(pragma.DoNotImplement) {}
+
+type OneofFields struct {
+	List   []protoreflect.FieldDescriptor
+	once   sync.Once
+	byName map[protoreflect.Name]protoreflect.FieldDescriptor        // protected by once
+	byJSON map[string]protoreflect.FieldDescriptor                   // protected by once
+	byText map[string]protoreflect.FieldDescriptor                   // protected by once
+	byNum  map[protoreflect.FieldNumber]protoreflect.FieldDescriptor // protected by once
+}
+
+func (p *OneofFields) Len() int                               { return len(p.List) }
+func (p *OneofFields) Get(i int) protoreflect.FieldDescriptor { return p.List[i] }
+func (p *OneofFields) ByName(s protoreflect.Name) protoreflect.FieldDescriptor {
+	return p.lazyInit().byName[s]
+}
+func (p *OneofFields) ByJSONName(s string) protoreflect.FieldDescriptor {
+	return p.lazyInit().byJSON[s]
+}
+func (p *OneofFields) ByTextName(s string) protoreflect.FieldDescriptor {
+	return p.lazyInit().byText[s]
+}
+func (p *OneofFields) ByNumber(n protoreflect.FieldNumber) protoreflect.FieldDescriptor {
+	return p.lazyInit().byNum[n]
+}
+func (p *OneofFields) Format(s fmt.State, r rune)          { descfmt.FormatList(s, r, p) }
+func (p *OneofFields) ProtoInternal(pragma.DoNotImplement) {}
+
+func (p *OneofFields) lazyInit() *OneofFields {
+	p.once.Do(func() {
+		if len(p.List) > 0 {
+			p.byName = make(map[protoreflect.Name]protoreflect.FieldDescriptor, len(p.List))
+			p.byJSON = make(map[string]protoreflect.FieldDescriptor, len(p.List))
+			p.byText = make(map[string]protoreflect.FieldDescriptor, len(p.List))
+			p.byNum = make(map[protoreflect.FieldNumber]protoreflect.FieldDescriptor, len(p.List))
+			for _, f := range p.List {
+				// Field names and numbers are guaranteed to be unique.
+				p.byName[f.Name()] = f
+				p.byJSON[f.JSONName()] = f
+				p.byText[f.TextName()] = f
+				p.byNum[f.Number()] = f
+			}
+		}
+	})
+	return p
+}
+
+type SourceLocations struct {
+	// List is a list of SourceLocations.
+	// The SourceLocation.Next field does not need to be populated
+	// as it will be lazily populated upon first need.
+	List []protoreflect.SourceLocation
+
+	// File is the parent file descriptor that these locations are relative to.
+	// If non-nil, ByDescriptor verifies that the provided descriptor
+	// is a child of this file descriptor.
+	File protoreflect.FileDescriptor
+
+	once   sync.Once
+	byPath map[pathKey]int
+}
+
+func (p *SourceLocations) Len() int                              { return len(p.List) }
+func (p *SourceLocations) Get(i int) protoreflect.SourceLocation { return p.lazyInit().List[i] }
+func (p *SourceLocations) byKey(k pathKey) protoreflect.SourceLocation {
+	if i, ok := p.lazyInit().byPath[k]; ok {
+		return p.List[i]
+	}
+	return protoreflect.SourceLocation{}
+}
+func (p *SourceLocations) ByPath(path protoreflect.SourcePath) protoreflect.SourceLocation {
+	return p.byKey(newPathKey(path))
+}
+func (p *SourceLocations) ByDescriptor(desc protoreflect.Descriptor) protoreflect.SourceLocation {
+	if p.File != nil && desc != nil && p.File != desc.ParentFile() {
+		return protoreflect.SourceLocation{} // mismatching parent files
+	}
+	var pathArr [16]int32
+	path := pathArr[:0]
+	for {
+		switch desc.(type) {
+		case protoreflect.FileDescriptor:
+			// Reverse the path since it was constructed in reverse.
+			for i, j := 0, len(path)-1; i < j; i, j = i+1, j-1 {
+				path[i], path[j] = path[j], path[i]
+			}
+			return p.byKey(newPathKey(path))
+		case protoreflect.MessageDescriptor:
+			path = append(path, int32(desc.Index()))
+			desc = desc.Parent()
+			switch desc.(type) {
+			case protoreflect.FileDescriptor:
+				path = append(path, int32(genid.FileDescriptorProto_MessageType_field_number))
+			case protoreflect.MessageDescriptor:
+				path = append(path, int32(genid.DescriptorProto_NestedType_field_number))
+			default:
+				return protoreflect.SourceLocation{}
+			}
+		case protoreflect.FieldDescriptor:
+			isExtension := desc.(protoreflect.FieldDescriptor).IsExtension()
+			path = append(path, int32(desc.Index()))
+			desc = desc.Parent()
+			if isExtension {
+				switch desc.(type) {
+				case protoreflect.FileDescriptor:
+					path = append(path, int32(genid.FileDescriptorProto_Extension_field_number))
+				case protoreflect.MessageDescriptor:
+					path = append(path, int32(genid.DescriptorProto_Extension_field_number))
+				default:
+					return protoreflect.SourceLocation{}
+				}
+			} else {
+				switch desc.(type) {
+				case protoreflect.MessageDescriptor:
+					path = append(path, int32(genid.DescriptorProto_Field_field_number))
+				default:
+					return protoreflect.SourceLocation{}
+				}
+			}
+		case protoreflect.OneofDescriptor:
+			path = append(path, int32(desc.Index()))
+			desc = desc.Parent()
+			switch desc.(type) {
+			case protoreflect.MessageDescriptor:
+				path = append(path, int32(genid.DescriptorProto_OneofDecl_field_number))
+			default:
+				return protoreflect.SourceLocation{}
+			}
+		case protoreflect.EnumDescriptor:
+			path = append(path, int32(desc.Index()))
+			desc = desc.Parent()
+			switch desc.(type) {
+			case protoreflect.FileDescriptor:
+				path = append(path, int32(genid.FileDescriptorProto_EnumType_field_number))
+			case protoreflect.MessageDescriptor:
+				path = append(path, int32(genid.DescriptorProto_EnumType_field_number))
+			default:
+				return protoreflect.SourceLocation{}
+			}
+		case protoreflect.EnumValueDescriptor:
+			path = append(path, int32(desc.Index()))
+			desc = desc.Parent()
+			switch desc.(type) {
+			case protoreflect.EnumDescriptor:
+				path = append(path, int32(genid.EnumDescriptorProto_Value_field_number))
+			default:
+				return protoreflect.SourceLocation{}
+			}
+		case protoreflect.ServiceDescriptor:
+			path = append(path, int32(desc.Index()))
+			desc = desc.Parent()
+			switch desc.(type) {
+			case protoreflect.FileDescriptor:
+				path = append(path, int32(genid.FileDescriptorProto_Service_field_number))
+			default:
+				return protoreflect.SourceLocation{}
+			}
+		case protoreflect.MethodDescriptor:
+			path = append(path, int32(desc.Index()))
+			desc = desc.Parent()
+			switch desc.(type) {
+			case protoreflect.ServiceDescriptor:
+				path = append(path, int32(genid.ServiceDescriptorProto_Method_field_number))
+			default:
+				return protoreflect.SourceLocation{}
+			}
+		default:
+			return protoreflect.SourceLocation{}
+		}
+	}
+}
+func (p *SourceLocations) lazyInit() *SourceLocations {
+	p.once.Do(func() {
+		if len(p.List) > 0 {
+			// Collect all the indexes for a given path.
+			pathIdxs := make(map[pathKey][]int, len(p.List))
+			for i, l := range p.List {
+				k := newPathKey(l.Path)
+				pathIdxs[k] = append(pathIdxs[k], i)
+			}
+
+			// Update the next index for all locations.
+			p.byPath = make(map[pathKey]int, len(p.List))
+			for k, idxs := range pathIdxs {
+				for i := 0; i < len(idxs)-1; i++ {
+					p.List[idxs[i]].Next = idxs[i+1]
+				}
+				p.List[idxs[len(idxs)-1]].Next = 0
+				p.byPath[k] = idxs[0] // record the first location for this path
+			}
+		}
+	})
+	return p
+}
+func (p *SourceLocations) ProtoInternal(pragma.DoNotImplement) {}
+
+// pathKey is a comparable representation of protoreflect.SourcePath.
+type pathKey struct {
+	arr [16]uint8 // first n-1 path segments; last element is the length
+	str string    // used if the path does not fit in arr
+}
+
+func newPathKey(p protoreflect.SourcePath) (k pathKey) {
+	if len(p) < len(k.arr) {
+		for i, ps := range p {
+			if ps < 0 || math.MaxUint8 <= ps {
+				return pathKey{str: p.String()}
+			}
+			k.arr[i] = uint8(ps)
+		}
+		k.arr[len(k.arr)-1] = uint8(len(p))
+		return k
+	}
+	return pathKey{str: p.String()}
+}

e2e/vendor/google.golang.org/protobuf/internal/filedesc/desc_list_gen.go

@@ -0,0 +1,367 @@
+// Copyright 2018 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.
+
+// Code generated by generate-types. DO NOT EDIT.
+
+package filedesc
+
+import (
+	"fmt"
+	"strings"
+	"sync"
+
+	"google.golang.org/protobuf/internal/descfmt"
+	"google.golang.org/protobuf/internal/pragma"
+	"google.golang.org/protobuf/reflect/protoreflect"
+)
+
+type Enums struct {
+	List   []Enum
+	once   sync.Once
+	byName map[protoreflect.Name]*Enum // protected by once
+}
+
+func (p *Enums) Len() int {
+	return len(p.List)
+}
+func (p *Enums) Get(i int) protoreflect.EnumDescriptor {
+	return &p.List[i]
+}
+func (p *Enums) ByName(s protoreflect.Name) protoreflect.EnumDescriptor {
+	if d := p.lazyInit().byName[s]; d != nil {
+		return d
+	}
+	return nil
+}
+func (p *Enums) Format(s fmt.State, r rune) {
+	descfmt.FormatList(s, r, p)
+}
+func (p *Enums) ProtoInternal(pragma.DoNotImplement) {}
+func (p *Enums) lazyInit() *Enums {
+	p.once.Do(func() {
+		if len(p.List) > 0 {
+			p.byName = make(map[protoreflect.Name]*Enum, len(p.List))
+			for i := range p.List {
+				d := &p.List[i]
+				if _, ok := p.byName[d.Name()]; !ok {
+					p.byName[d.Name()] = d
+				}
+			}
+		}
+	})
+	return p
+}
+
+type EnumValues struct {
+	List   []EnumValue
+	once   sync.Once
+	byName map[protoreflect.Name]*EnumValue       // protected by once
+	byNum  map[protoreflect.EnumNumber]*EnumValue // protected by once
+}
+
+func (p *EnumValues) Len() int {
+	return len(p.List)
+}
+func (p *EnumValues) Get(i int) protoreflect.EnumValueDescriptor {
+	return &p.List[i]
+}
+func (p *EnumValues) ByName(s protoreflect.Name) protoreflect.EnumValueDescriptor {
+	if d := p.lazyInit().byName[s]; d != nil {
+		return d
+	}
+	return nil
+}
+func (p *EnumValues) ByNumber(n protoreflect.EnumNumber) protoreflect.EnumValueDescriptor {
+	if d := p.lazyInit().byNum[n]; d != nil {
+		return d
+	}
+	return nil
+}
+func (p *EnumValues) Format(s fmt.State, r rune) {
+	descfmt.FormatList(s, r, p)
+}
+func (p *EnumValues) ProtoInternal(pragma.DoNotImplement) {}
+func (p *EnumValues) lazyInit() *EnumValues {
+	p.once.Do(func() {
+		if len(p.List) > 0 {
+			p.byName = make(map[protoreflect.Name]*EnumValue, len(p.List))
+			p.byNum = make(map[protoreflect.EnumNumber]*EnumValue, len(p.List))
+			for i := range p.List {
+				d := &p.List[i]
+				if _, ok := p.byName[d.Name()]; !ok {
+					p.byName[d.Name()] = d
+				}
+				if _, ok := p.byNum[d.Number()]; !ok {
+					p.byNum[d.Number()] = d
+				}
+			}
+		}
+	})
+	return p
+}
+
+type Messages struct {
+	List   []Message
+	once   sync.Once
+	byName map[protoreflect.Name]*Message // protected by once
+}
+
+func (p *Messages) Len() int {
+	return len(p.List)
+}
+func (p *Messages) Get(i int) protoreflect.MessageDescriptor {
+	return &p.List[i]
+}
+func (p *Messages) ByName(s protoreflect.Name) protoreflect.MessageDescriptor {
+	if d := p.lazyInit().byName[s]; d != nil {
+		return d
+	}
+	return nil
+}
+func (p *Messages) Format(s fmt.State, r rune) {
+	descfmt.FormatList(s, r, p)
+}
+func (p *Messages) ProtoInternal(pragma.DoNotImplement) {}
+func (p *Messages) lazyInit() *Messages {
+	p.once.Do(func() {
+		if len(p.List) > 0 {
+			p.byName = make(map[protoreflect.Name]*Message, len(p.List))
+			for i := range p.List {
+				d := &p.List[i]
+				if _, ok := p.byName[d.Name()]; !ok {
+					p.byName[d.Name()] = d
+				}
+			}
+		}
+	})
+	return p
+}
+
+type Fields struct {
+	List   []Field
+	once   sync.Once
+	byName map[protoreflect.Name]*Field        // protected by once
+	byJSON map[string]*Field                   // protected by once
+	byText map[string]*Field                   // protected by once
+	byNum  map[protoreflect.FieldNumber]*Field // protected by once
+}
+
+func (p *Fields) Len() int {
+	return len(p.List)
+}
+func (p *Fields) Get(i int) protoreflect.FieldDescriptor {
+	return &p.List[i]
+}
+func (p *Fields) ByName(s protoreflect.Name) protoreflect.FieldDescriptor {
+	if d := p.lazyInit().byName[s]; d != nil {
+		return d
+	}
+	return nil
+}
+func (p *Fields) ByJSONName(s string) protoreflect.FieldDescriptor {
+	if d := p.lazyInit().byJSON[s]; d != nil {
+		return d
+	}
+	return nil
+}
+func (p *Fields) ByTextName(s string) protoreflect.FieldDescriptor {
+	if d := p.lazyInit().byText[s]; d != nil {
+		return d
+	}
+	return nil
+}
+func (p *Fields) ByNumber(n protoreflect.FieldNumber) protoreflect.FieldDescriptor {
+	if d := p.lazyInit().byNum[n]; d != nil {
+		return d
+	}
+	return nil
+}
+func (p *Fields) Format(s fmt.State, r rune) {
+	descfmt.FormatList(s, r, p)
+}
+func (p *Fields) ProtoInternal(pragma.DoNotImplement) {}
+func (p *Fields) lazyInit() *Fields {
+	p.once.Do(func() {
+		if len(p.List) > 0 {
+			p.byName = make(map[protoreflect.Name]*Field, len(p.List))
+			p.byJSON = make(map[string]*Field, len(p.List))
+			p.byText = make(map[string]*Field, len(p.List))
+			p.byNum = make(map[protoreflect.FieldNumber]*Field, len(p.List))
+			for i := range p.List {
+				d := &p.List[i]
+				if _, ok := p.byName[d.Name()]; !ok {
+					p.byName[d.Name()] = d
+				}
+				if _, ok := p.byJSON[d.JSONName()]; !ok {
+					p.byJSON[d.JSONName()] = d
+				}
+				if _, ok := p.byText[d.TextName()]; !ok {
+					p.byText[d.TextName()] = d
+				}
+				if isGroupLike(d) {
+					lowerJSONName := strings.ToLower(d.JSONName())
+					if _, ok := p.byJSON[lowerJSONName]; !ok {
+						p.byJSON[lowerJSONName] = d
+					}
+					lowerTextName := strings.ToLower(d.TextName())
+					if _, ok := p.byText[lowerTextName]; !ok {
+						p.byText[lowerTextName] = d
+					}
+				}
+				if _, ok := p.byNum[d.Number()]; !ok {
+					p.byNum[d.Number()] = d
+				}
+			}
+		}
+	})
+	return p
+}
+
+type Oneofs struct {
+	List   []Oneof
+	once   sync.Once
+	byName map[protoreflect.Name]*Oneof // protected by once
+}
+
+func (p *Oneofs) Len() int {
+	return len(p.List)
+}
+func (p *Oneofs) Get(i int) protoreflect.OneofDescriptor {
+	return &p.List[i]
+}
+func (p *Oneofs) ByName(s protoreflect.Name) protoreflect.OneofDescriptor {
+	if d := p.lazyInit().byName[s]; d != nil {
+		return d
+	}
+	return nil
+}
+func (p *Oneofs) Format(s fmt.State, r rune) {
+	descfmt.FormatList(s, r, p)
+}
+func (p *Oneofs) ProtoInternal(pragma.DoNotImplement) {}
+func (p *Oneofs) lazyInit() *Oneofs {
+	p.once.Do(func() {
+		if len(p.List) > 0 {
+			p.byName = make(map[protoreflect.Name]*Oneof, len(p.List))
+			for i := range p.List {
+				d := &p.List[i]
+				if _, ok := p.byName[d.Name()]; !ok {
+					p.byName[d.Name()] = d
+				}
+			}
+		}
+	})
+	return p
+}
+
+type Extensions struct {
+	List   []Extension
+	once   sync.Once
+	byName map[protoreflect.Name]*Extension // protected by once
+}
+
+func (p *Extensions) Len() int {
+	return len(p.List)
+}
+func (p *Extensions) Get(i int) protoreflect.ExtensionDescriptor {
+	return &p.List[i]
+}
+func (p *Extensions) ByName(s protoreflect.Name) protoreflect.ExtensionDescriptor {
+	if d := p.lazyInit().byName[s]; d != nil {
+		return d
+	}
+	return nil
+}
+func (p *Extensions) Format(s fmt.State, r rune) {
+	descfmt.FormatList(s, r, p)
+}
+func (p *Extensions) ProtoInternal(pragma.DoNotImplement) {}
+func (p *Extensions) lazyInit() *Extensions {
+	p.once.Do(func() {
+		if len(p.List) > 0 {
+			p.byName = make(map[protoreflect.Name]*Extension, len(p.List))
+			for i := range p.List {
+				d := &p.List[i]
+				if _, ok := p.byName[d.Name()]; !ok {
+					p.byName[d.Name()] = d
+				}
+			}
+		}
+	})
+	return p
+}
+
+type Services struct {
+	List   []Service
+	once   sync.Once
+	byName map[protoreflect.Name]*Service // protected by once
+}
+
+func (p *Services) Len() int {
+	return len(p.List)
+}
+func (p *Services) Get(i int) protoreflect.ServiceDescriptor {
+	return &p.List[i]
+}
+func (p *Services) ByName(s protoreflect.Name) protoreflect.ServiceDescriptor {
+	if d := p.lazyInit().byName[s]; d != nil {
+		return d
+	}
+	return nil
+}
+func (p *Services) Format(s fmt.State, r rune) {
+	descfmt.FormatList(s, r, p)
+}
+func (p *Services) ProtoInternal(pragma.DoNotImplement) {}
+func (p *Services) lazyInit() *Services {
+	p.once.Do(func() {
+		if len(p.List) > 0 {
+			p.byName = make(map[protoreflect.Name]*Service, len(p.List))
+			for i := range p.List {
+				d := &p.List[i]
+				if _, ok := p.byName[d.Name()]; !ok {
+					p.byName[d.Name()] = d
+				}
+			}
+		}
+	})
+	return p
+}
+
+type Methods struct {
+	List   []Method
+	once   sync.Once
+	byName map[protoreflect.Name]*Method // protected by once
+}
+
+func (p *Methods) Len() int {
+	return len(p.List)
+}
+func (p *Methods) Get(i int) protoreflect.MethodDescriptor {
+	return &p.List[i]
+}
+func (p *Methods) ByName(s protoreflect.Name) protoreflect.MethodDescriptor {
+	if d := p.lazyInit().byName[s]; d != nil {
+		return d
+	}
+	return nil
+}
+func (p *Methods) Format(s fmt.State, r rune) {
+	descfmt.FormatList(s, r, p)
+}
+func (p *Methods) ProtoInternal(pragma.DoNotImplement) {}
+func (p *Methods) lazyInit() *Methods {
+	p.once.Do(func() {
+		if len(p.List) > 0 {
+			p.byName = make(map[protoreflect.Name]*Method, len(p.List))
+			for i := range p.List {
+				d := &p.List[i]
+				if _, ok := p.byName[d.Name()]; !ok {
+					p.byName[d.Name()] = d
+				}
+			}
+		}
+	})
+	return p
+}

e2e/vendor/google.golang.org/protobuf/internal/filedesc/editions.go

@@ -0,0 +1,164 @@
+// 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 filedesc
+
+import (
+	"fmt"
+
+	"google.golang.org/protobuf/encoding/protowire"
+	"google.golang.org/protobuf/internal/editiondefaults"
+	"google.golang.org/protobuf/internal/genid"
+	"google.golang.org/protobuf/reflect/protoreflect"
+)
+
+var defaultsCache = make(map[Edition]EditionFeatures)
+var defaultsKeys = []Edition{}
+
+func init() {
+	unmarshalEditionDefaults(editiondefaults.Defaults)
+	SurrogateProto2.L1.EditionFeatures = getFeaturesFor(EditionProto2)
+	SurrogateProto3.L1.EditionFeatures = getFeaturesFor(EditionProto3)
+	SurrogateEdition2023.L1.EditionFeatures = getFeaturesFor(Edition2023)
+}
+
+func unmarshalGoFeature(b []byte, parent EditionFeatures) EditionFeatures {
+	for len(b) > 0 {
+		num, _, n := protowire.ConsumeTag(b)
+		b = b[n:]
+		switch num {
+		case genid.GoFeatures_LegacyUnmarshalJsonEnum_field_number:
+			v, m := protowire.ConsumeVarint(b)
+			b = b[m:]
+			parent.GenerateLegacyUnmarshalJSON = protowire.DecodeBool(v)
+		case genid.GoFeatures_ApiLevel_field_number:
+			v, m := protowire.ConsumeVarint(b)
+			b = b[m:]
+			parent.APILevel = int(v)
+		case genid.GoFeatures_StripEnumPrefix_field_number:
+			v, m := protowire.ConsumeVarint(b)
+			b = b[m:]
+			parent.StripEnumPrefix = int(v)
+		default:
+			panic(fmt.Sprintf("unkown field number %d while unmarshalling GoFeatures", num))
+		}
+	}
+	return parent
+}
+
+func unmarshalFeatureSet(b []byte, parent EditionFeatures) EditionFeatures {
+	for len(b) > 0 {
+		num, typ, n := protowire.ConsumeTag(b)
+		b = b[n:]
+		switch typ {
+		case protowire.VarintType:
+			v, m := protowire.ConsumeVarint(b)
+			b = b[m:]
+			switch num {
+			case genid.FeatureSet_FieldPresence_field_number:
+				parent.IsFieldPresence = v == genid.FeatureSet_EXPLICIT_enum_value || v == genid.FeatureSet_LEGACY_REQUIRED_enum_value
+				parent.IsLegacyRequired = v == genid.FeatureSet_LEGACY_REQUIRED_enum_value
+			case genid.FeatureSet_EnumType_field_number:
+				parent.IsOpenEnum = v == genid.FeatureSet_OPEN_enum_value
+			case genid.FeatureSet_RepeatedFieldEncoding_field_number:
+				parent.IsPacked = v == genid.FeatureSet_PACKED_enum_value
+			case genid.FeatureSet_Utf8Validation_field_number:
+				parent.IsUTF8Validated = v == genid.FeatureSet_VERIFY_enum_value
+			case genid.FeatureSet_MessageEncoding_field_number:
+				parent.IsDelimitedEncoded = v == genid.FeatureSet_DELIMITED_enum_value
+			case genid.FeatureSet_JsonFormat_field_number:
+				parent.IsJSONCompliant = v == genid.FeatureSet_ALLOW_enum_value
+			default:
+				panic(fmt.Sprintf("unkown field number %d while unmarshalling FeatureSet", num))
+			}
+		case protowire.BytesType:
+			v, m := protowire.ConsumeBytes(b)
+			b = b[m:]
+			switch num {
+			case genid.FeatureSet_Go_ext_number:
+				parent = unmarshalGoFeature(v, parent)
+			}
+		}
+	}
+
+	return parent
+}
+
+func featuresFromParentDesc(parentDesc protoreflect.Descriptor) EditionFeatures {
+	var parentFS EditionFeatures
+	switch p := parentDesc.(type) {
+	case *File:
+		parentFS = p.L1.EditionFeatures
+	case *Message:
+		parentFS = p.L1.EditionFeatures
+	default:
+		panic(fmt.Sprintf("unknown parent type %T", parentDesc))
+	}
+	return parentFS
+}
+
+func unmarshalEditionDefault(b []byte) {
+	var ed Edition
+	var fs EditionFeatures
+	for len(b) > 0 {
+		num, typ, n := protowire.ConsumeTag(b)
+		b = b[n:]
+		switch typ {
+		case protowire.VarintType:
+			v, m := protowire.ConsumeVarint(b)
+			b = b[m:]
+			switch num {
+			case genid.FeatureSetDefaults_FeatureSetEditionDefault_Edition_field_number:
+				ed = Edition(v)
+			}
+		case protowire.BytesType:
+			v, m := protowire.ConsumeBytes(b)
+			b = b[m:]
+			switch num {
+			case genid.FeatureSetDefaults_FeatureSetEditionDefault_FixedFeatures_field_number:
+				fs = unmarshalFeatureSet(v, fs)
+			case genid.FeatureSetDefaults_FeatureSetEditionDefault_OverridableFeatures_field_number:
+				fs = unmarshalFeatureSet(v, fs)
+			}
+		}
+	}
+	defaultsCache[ed] = fs
+	defaultsKeys = append(defaultsKeys, ed)
+}
+
+func unmarshalEditionDefaults(b []byte) {
+	for len(b) > 0 {
+		num, _, n := protowire.ConsumeTag(b)
+		b = b[n:]
+		switch num {
+		case genid.FeatureSetDefaults_Defaults_field_number:
+			def, m := protowire.ConsumeBytes(b)
+			b = b[m:]
+			unmarshalEditionDefault(def)
+		case genid.FeatureSetDefaults_MinimumEdition_field_number,
+			genid.FeatureSetDefaults_MaximumEdition_field_number:
+			// We don't care about the minimum and maximum editions. If the
+			// edition we are looking for later on is not in the cache we know
+			// it is outside of the range between minimum and maximum edition.
+			_, m := protowire.ConsumeVarint(b)
+			b = b[m:]
+		default:
+			panic(fmt.Sprintf("unkown field number %d while unmarshalling EditionDefault", num))
+		}
+	}
+}
+
+func getFeaturesFor(ed Edition) EditionFeatures {
+	match := EditionUnknown
+	for _, key := range defaultsKeys {
+		if key > ed {
+			break
+		}
+		match = key
+	}
+	if match == EditionUnknown {
+		panic(fmt.Sprintf("unsupported edition: %v", ed))
+	}
+	return defaultsCache[match]
+}

e2e/vendor/google.golang.org/protobuf/internal/filedesc/placeholder.go

@@ -0,0 +1,110 @@
+// 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 filedesc
+
+import (
+	"google.golang.org/protobuf/internal/descopts"
+	"google.golang.org/protobuf/internal/pragma"
+	"google.golang.org/protobuf/reflect/protoreflect"
+)
+
+var (
+	emptyNames           = new(Names)
+	emptyEnumRanges      = new(EnumRanges)
+	emptyFieldRanges     = new(FieldRanges)
+	emptyFieldNumbers    = new(FieldNumbers)
+	emptySourceLocations = new(SourceLocations)
+
+	emptyFiles      = new(FileImports)
+	emptyMessages   = new(Messages)
+	emptyFields     = new(Fields)
+	emptyOneofs     = new(Oneofs)
+	emptyEnums      = new(Enums)
+	emptyEnumValues = new(EnumValues)
+	emptyExtensions = new(Extensions)
+	emptyServices   = new(Services)
+)
+
+// PlaceholderFile is a placeholder, representing only the file path.
+type PlaceholderFile string
+
+func (f PlaceholderFile) ParentFile() protoreflect.FileDescriptor       { return f }
+func (f PlaceholderFile) Parent() protoreflect.Descriptor               { return nil }
+func (f PlaceholderFile) Index() int                                    { return 0 }
+func (f PlaceholderFile) Syntax() protoreflect.Syntax                   { return 0 }
+func (f PlaceholderFile) Name() protoreflect.Name                       { return "" }
+func (f PlaceholderFile) FullName() protoreflect.FullName               { return "" }
+func (f PlaceholderFile) IsPlaceholder() bool                           { return true }
+func (f PlaceholderFile) Options() protoreflect.ProtoMessage            { return descopts.File }
+func (f PlaceholderFile) Path() string                                  { return string(f) }
+func (f PlaceholderFile) Package() protoreflect.FullName                { return "" }
+func (f PlaceholderFile) Imports() protoreflect.FileImports             { return emptyFiles }
+func (f PlaceholderFile) Messages() protoreflect.MessageDescriptors     { return emptyMessages }
+func (f PlaceholderFile) Enums() protoreflect.EnumDescriptors           { return emptyEnums }
+func (f PlaceholderFile) Extensions() protoreflect.ExtensionDescriptors { return emptyExtensions }
+func (f PlaceholderFile) Services() protoreflect.ServiceDescriptors     { return emptyServices }
+func (f PlaceholderFile) SourceLocations() protoreflect.SourceLocations { return emptySourceLocations }
+func (f PlaceholderFile) ProtoType(protoreflect.FileDescriptor)         { return }
+func (f PlaceholderFile) ProtoInternal(pragma.DoNotImplement)           { return }
+
+// PlaceholderEnum is a placeholder, representing only the full name.
+type PlaceholderEnum protoreflect.FullName
+
+func (e PlaceholderEnum) ParentFile() protoreflect.FileDescriptor   { return nil }
+func (e PlaceholderEnum) Parent() protoreflect.Descriptor           { return nil }
+func (e PlaceholderEnum) Index() int                                { return 0 }
+func (e PlaceholderEnum) Syntax() protoreflect.Syntax               { return 0 }
+func (e PlaceholderEnum) Name() protoreflect.Name                   { return protoreflect.FullName(e).Name() }
+func (e PlaceholderEnum) FullName() protoreflect.FullName           { return protoreflect.FullName(e) }
+func (e PlaceholderEnum) IsPlaceholder() bool                       { return true }
+func (e PlaceholderEnum) Options() protoreflect.ProtoMessage        { return descopts.Enum }
+func (e PlaceholderEnum) Values() protoreflect.EnumValueDescriptors { return emptyEnumValues }
+func (e PlaceholderEnum) ReservedNames() protoreflect.Names         { return emptyNames }
+func (e PlaceholderEnum) ReservedRanges() protoreflect.EnumRanges   { return emptyEnumRanges }
+func (e PlaceholderEnum) IsClosed() bool                            { return false }
+func (e PlaceholderEnum) ProtoType(protoreflect.EnumDescriptor)     { return }
+func (e PlaceholderEnum) ProtoInternal(pragma.DoNotImplement)       { return }
+
+// PlaceholderEnumValue is a placeholder, representing only the full name.
+type PlaceholderEnumValue protoreflect.FullName
+
+func (e PlaceholderEnumValue) ParentFile() protoreflect.FileDescriptor    { return nil }
+func (e PlaceholderEnumValue) Parent() protoreflect.Descriptor            { return nil }
+func (e PlaceholderEnumValue) Index() int                                 { return 0 }
+func (e PlaceholderEnumValue) Syntax() protoreflect.Syntax                { return 0 }
+func (e PlaceholderEnumValue) Name() protoreflect.Name                    { return protoreflect.FullName(e).Name() }
+func (e PlaceholderEnumValue) FullName() protoreflect.FullName            { return protoreflect.FullName(e) }
+func (e PlaceholderEnumValue) IsPlaceholder() bool                        { return true }
+func (e PlaceholderEnumValue) Options() protoreflect.ProtoMessage         { return descopts.EnumValue }
+func (e PlaceholderEnumValue) Number() protoreflect.EnumNumber            { return 0 }
+func (e PlaceholderEnumValue) ProtoType(protoreflect.EnumValueDescriptor) { return }
+func (e PlaceholderEnumValue) ProtoInternal(pragma.DoNotImplement)        { return }
+
+// PlaceholderMessage is a placeholder, representing only the full name.
+type PlaceholderMessage protoreflect.FullName
+
+func (m PlaceholderMessage) ParentFile() protoreflect.FileDescriptor    { return nil }
+func (m PlaceholderMessage) Parent() protoreflect.Descriptor            { return nil }
+func (m PlaceholderMessage) Index() int                                 { return 0 }
+func (m PlaceholderMessage) Syntax() protoreflect.Syntax                { return 0 }
+func (m PlaceholderMessage) Name() protoreflect.Name                    { return protoreflect.FullName(m).Name() }
+func (m PlaceholderMessage) FullName() protoreflect.FullName            { return protoreflect.FullName(m) }
+func (m PlaceholderMessage) IsPlaceholder() bool                        { return true }
+func (m PlaceholderMessage) Options() protoreflect.ProtoMessage         { return descopts.Message }
+func (m PlaceholderMessage) IsMapEntry() bool                           { return false }
+func (m PlaceholderMessage) Fields() protoreflect.FieldDescriptors      { return emptyFields }
+func (m PlaceholderMessage) Oneofs() protoreflect.OneofDescriptors      { return emptyOneofs }
+func (m PlaceholderMessage) ReservedNames() protoreflect.Names          { return emptyNames }
+func (m PlaceholderMessage) ReservedRanges() protoreflect.FieldRanges   { return emptyFieldRanges }
+func (m PlaceholderMessage) RequiredNumbers() protoreflect.FieldNumbers { return emptyFieldNumbers }
+func (m PlaceholderMessage) ExtensionRanges() protoreflect.FieldRanges  { return emptyFieldRanges }
+func (m PlaceholderMessage) ExtensionRangeOptions(int) protoreflect.ProtoMessage {
+	panic("index out of range")
+}
+func (m PlaceholderMessage) Messages() protoreflect.MessageDescriptors     { return emptyMessages }
+func (m PlaceholderMessage) Enums() protoreflect.EnumDescriptors           { return emptyEnums }
+func (m PlaceholderMessage) Extensions() protoreflect.ExtensionDescriptors { return emptyExtensions }
+func (m PlaceholderMessage) ProtoType(protoreflect.MessageDescriptor)      { return }
+func (m PlaceholderMessage) ProtoInternal(pragma.DoNotImplement)           { return }