mirror of
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rebase: bump google.golang.org/protobuf from 1.35.2 to 1.36.0
Bumps google.golang.org/protobuf from 1.35.2 to 1.36.0. --- updated-dependencies: - dependency-name: google.golang.org/protobuf dependency-type: direct:production update-type: version-update:semver-minor ... Signed-off-by: dependabot[bot] <support@github.com>
This commit is contained in:
committed by
mergify[bot]
parent
431e9231d2
commit
ca1ccdd9bf
433
vendor/google.golang.org/protobuf/internal/impl/lazy.go
generated
vendored
Normal file
433
vendor/google.golang.org/protobuf/internal/impl/lazy.go
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vendored
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@ -0,0 +1,433 @@
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// Copyright 2024 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package impl
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import (
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"fmt"
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"math/bits"
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"os"
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"reflect"
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"sort"
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"sync/atomic"
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"google.golang.org/protobuf/encoding/protowire"
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"google.golang.org/protobuf/internal/errors"
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"google.golang.org/protobuf/internal/protolazy"
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"google.golang.org/protobuf/reflect/protoreflect"
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preg "google.golang.org/protobuf/reflect/protoregistry"
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piface "google.golang.org/protobuf/runtime/protoiface"
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)
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var enableLazy int32 = func() int32 {
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if os.Getenv("GOPROTODEBUG") == "nolazy" {
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return 0
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}
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return 1
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}()
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// EnableLazyUnmarshal enables lazy unmarshaling.
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func EnableLazyUnmarshal(enable bool) {
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if enable {
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atomic.StoreInt32(&enableLazy, 1)
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return
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}
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atomic.StoreInt32(&enableLazy, 0)
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}
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// LazyEnabled reports whether lazy unmarshalling is currently enabled.
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func LazyEnabled() bool {
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return atomic.LoadInt32(&enableLazy) != 0
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}
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// UnmarshalField unmarshals a field in a message.
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func UnmarshalField(m interface{}, num protowire.Number) {
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switch m := m.(type) {
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case *messageState:
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m.messageInfo().lazyUnmarshal(m.pointer(), num)
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case *messageReflectWrapper:
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m.messageInfo().lazyUnmarshal(m.pointer(), num)
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default:
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panic(fmt.Sprintf("unsupported wrapper type %T", m))
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}
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}
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func (mi *MessageInfo) lazyUnmarshal(p pointer, num protoreflect.FieldNumber) {
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var f *coderFieldInfo
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if int(num) < len(mi.denseCoderFields) {
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f = mi.denseCoderFields[num]
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} else {
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f = mi.coderFields[num]
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}
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if f == nil {
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panic(fmt.Sprintf("lazyUnmarshal: field info for %v.%v", mi.Desc.FullName(), num))
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}
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lazy := *p.Apply(mi.lazyOffset).LazyInfoPtr()
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start, end, found, _, multipleEntries := lazy.FindFieldInProto(uint32(num))
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if !found && multipleEntries == nil {
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panic(fmt.Sprintf("lazyUnmarshal: can't find field data for %v.%v", mi.Desc.FullName(), num))
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}
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// The actual pointer in the message can not be set until the whole struct is filled in, otherwise we will have races.
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// Create another pointer and set it atomically, if we won the race and the pointer in the original message is still nil.
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fp := pointerOfValue(reflect.New(f.ft))
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if multipleEntries != nil {
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for _, entry := range multipleEntries {
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mi.unmarshalField(lazy.Buffer()[entry.Start:entry.End], fp, f, lazy, lazy.UnmarshalFlags())
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}
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} else {
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mi.unmarshalField(lazy.Buffer()[start:end], fp, f, lazy, lazy.UnmarshalFlags())
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}
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p.Apply(f.offset).AtomicSetPointerIfNil(fp.Elem())
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}
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func (mi *MessageInfo) unmarshalField(b []byte, p pointer, f *coderFieldInfo, lazyInfo *protolazy.XXX_lazyUnmarshalInfo, flags piface.UnmarshalInputFlags) error {
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opts := lazyUnmarshalOptions
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opts.flags |= flags
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for len(b) > 0 {
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// Parse the tag (field number and wire type).
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var tag uint64
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if b[0] < 0x80 {
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tag = uint64(b[0])
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b = b[1:]
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} else if len(b) >= 2 && b[1] < 128 {
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tag = uint64(b[0]&0x7f) + uint64(b[1])<<7
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b = b[2:]
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} else {
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var n int
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tag, n = protowire.ConsumeVarint(b)
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if n < 0 {
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return errors.New("invalid wire data")
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}
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b = b[n:]
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}
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var num protowire.Number
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if n := tag >> 3; n < uint64(protowire.MinValidNumber) || n > uint64(protowire.MaxValidNumber) {
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return errors.New("invalid wire data")
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} else {
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num = protowire.Number(n)
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}
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wtyp := protowire.Type(tag & 7)
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if num == f.num {
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o, err := f.funcs.unmarshal(b, p, wtyp, f, opts)
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if err == nil {
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b = b[o.n:]
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continue
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}
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if err != errUnknown {
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return err
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}
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}
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n := protowire.ConsumeFieldValue(num, wtyp, b)
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if n < 0 {
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return errors.New("invalid wire data")
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}
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b = b[n:]
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}
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return nil
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}
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func (mi *MessageInfo) skipField(b []byte, f *coderFieldInfo, wtyp protowire.Type, opts unmarshalOptions) (out unmarshalOutput, _ ValidationStatus) {
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fmi := f.validation.mi
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if fmi == nil {
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fd := mi.Desc.Fields().ByNumber(f.num)
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if fd == nil || !fd.IsWeak() {
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return out, ValidationUnknown
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}
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messageName := fd.Message().FullName()
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messageType, err := preg.GlobalTypes.FindMessageByName(messageName)
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if err != nil {
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return out, ValidationUnknown
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}
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var ok bool
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fmi, ok = messageType.(*MessageInfo)
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if !ok {
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return out, ValidationUnknown
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}
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}
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fmi.init()
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switch f.validation.typ {
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case validationTypeMessage:
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if wtyp != protowire.BytesType {
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return out, ValidationWrongWireType
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}
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v, n := protowire.ConsumeBytes(b)
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if n < 0 {
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return out, ValidationInvalid
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}
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out, st := fmi.validate(v, 0, opts)
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out.n = n
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return out, st
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case validationTypeGroup:
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if wtyp != protowire.StartGroupType {
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return out, ValidationWrongWireType
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}
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out, st := fmi.validate(b, f.num, opts)
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return out, st
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default:
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return out, ValidationUnknown
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}
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}
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// unmarshalPointerLazy is similar to unmarshalPointerEager, but it
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// specifically handles lazy unmarshalling. it expects lazyOffset and
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// presenceOffset to both be valid.
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func (mi *MessageInfo) unmarshalPointerLazy(b []byte, p pointer, groupTag protowire.Number, opts unmarshalOptions) (out unmarshalOutput, err error) {
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initialized := true
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var requiredMask uint64
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var lazy **protolazy.XXX_lazyUnmarshalInfo
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var presence presence
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var lazyIndex []protolazy.IndexEntry
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var lastNum protowire.Number
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outOfOrder := false
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lazyDecode := false
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presence = p.Apply(mi.presenceOffset).PresenceInfo()
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lazy = p.Apply(mi.lazyOffset).LazyInfoPtr()
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if !presence.AnyPresent(mi.presenceSize) {
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if opts.CanBeLazy() {
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// If the message contains existing data, we need to merge into it.
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// Lazy unmarshaling doesn't merge, so only enable it when the
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// message is empty (has no presence bitmap).
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lazyDecode = true
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if *lazy == nil {
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*lazy = &protolazy.XXX_lazyUnmarshalInfo{}
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}
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(*lazy).SetUnmarshalFlags(opts.flags)
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if !opts.AliasBuffer() {
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// Make a copy of the buffer for lazy unmarshaling.
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// Set the AliasBuffer flag so recursive unmarshal
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// operations reuse the copy.
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b = append([]byte{}, b...)
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opts.flags |= piface.UnmarshalAliasBuffer
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}
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(*lazy).SetBuffer(b)
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}
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}
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// Track special handling of lazy fields.
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//
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// In the common case, all fields are lazyValidateOnly (and lazyFields remains nil).
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// In the event that validation for a field fails, this map tracks handling of the field.
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type lazyAction uint8
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const (
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lazyValidateOnly lazyAction = iota // validate the field only
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lazyUnmarshalNow // eagerly unmarshal the field
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lazyUnmarshalLater // unmarshal the field after the message is fully processed
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)
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var lazyFields map[*coderFieldInfo]lazyAction
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var exts *map[int32]ExtensionField
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start := len(b)
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pos := 0
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for len(b) > 0 {
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// Parse the tag (field number and wire type).
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var tag uint64
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if b[0] < 0x80 {
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tag = uint64(b[0])
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b = b[1:]
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} else if len(b) >= 2 && b[1] < 128 {
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tag = uint64(b[0]&0x7f) + uint64(b[1])<<7
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b = b[2:]
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} else {
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var n int
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tag, n = protowire.ConsumeVarint(b)
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if n < 0 {
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return out, errDecode
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}
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b = b[n:]
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}
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var num protowire.Number
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if n := tag >> 3; n < uint64(protowire.MinValidNumber) || n > uint64(protowire.MaxValidNumber) {
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return out, errors.New("invalid field number")
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} else {
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num = protowire.Number(n)
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}
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wtyp := protowire.Type(tag & 7)
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if wtyp == protowire.EndGroupType {
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if num != groupTag {
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return out, errors.New("mismatching end group marker")
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}
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groupTag = 0
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break
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}
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var f *coderFieldInfo
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if int(num) < len(mi.denseCoderFields) {
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f = mi.denseCoderFields[num]
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} else {
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f = mi.coderFields[num]
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}
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var n int
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err := errUnknown
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discardUnknown := false
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Field:
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switch {
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case f != nil:
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if f.funcs.unmarshal == nil {
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break
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}
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if f.isLazy && lazyDecode {
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switch {
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case lazyFields == nil || lazyFields[f] == lazyValidateOnly:
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// Attempt to validate this field and leave it for later lazy unmarshaling.
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o, valid := mi.skipField(b, f, wtyp, opts)
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switch valid {
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case ValidationValid:
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// Skip over the valid field and continue.
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err = nil
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presence.SetPresentUnatomic(f.presenceIndex, mi.presenceSize)
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requiredMask |= f.validation.requiredBit
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if !o.initialized {
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initialized = false
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}
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n = o.n
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break Field
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case ValidationInvalid:
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return out, errors.New("invalid proto wire format")
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case ValidationWrongWireType:
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break Field
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case ValidationUnknown:
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if lazyFields == nil {
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lazyFields = make(map[*coderFieldInfo]lazyAction)
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}
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if presence.Present(f.presenceIndex) {
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// We were unable to determine if the field is valid or not,
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// and we've already skipped over at least one instance of this
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// field. Clear the presence bit (so if we stop decoding early,
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// we don't leave a partially-initialized field around) and flag
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// the field for unmarshaling before we return.
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presence.ClearPresent(f.presenceIndex)
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lazyFields[f] = lazyUnmarshalLater
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discardUnknown = true
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break Field
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} else {
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// We were unable to determine if the field is valid or not,
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// but this is the first time we've seen it. Flag it as needing
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// eager unmarshaling and fall through to the eager unmarshal case below.
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lazyFields[f] = lazyUnmarshalNow
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}
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}
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case lazyFields[f] == lazyUnmarshalLater:
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// This field will be unmarshaled in a separate pass below.
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// Skip over it here.
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discardUnknown = true
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break Field
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default:
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// Eagerly unmarshal the field.
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}
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}
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if f.isLazy && !lazyDecode && presence.Present(f.presenceIndex) {
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if p.Apply(f.offset).AtomicGetPointer().IsNil() {
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mi.lazyUnmarshal(p, f.num)
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}
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}
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var o unmarshalOutput
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o, err = f.funcs.unmarshal(b, p.Apply(f.offset), wtyp, f, opts)
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n = o.n
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if err != nil {
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break
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}
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requiredMask |= f.validation.requiredBit
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if f.funcs.isInit != nil && !o.initialized {
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initialized = false
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}
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if f.presenceIndex != noPresence {
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presence.SetPresentUnatomic(f.presenceIndex, mi.presenceSize)
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}
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default:
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// Possible extension.
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if exts == nil && mi.extensionOffset.IsValid() {
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exts = p.Apply(mi.extensionOffset).Extensions()
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if *exts == nil {
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*exts = make(map[int32]ExtensionField)
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}
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}
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if exts == nil {
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break
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}
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var o unmarshalOutput
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o, err = mi.unmarshalExtension(b, num, wtyp, *exts, opts)
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if err != nil {
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break
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}
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n = o.n
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if !o.initialized {
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initialized = false
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}
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}
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if err != nil {
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if err != errUnknown {
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return out, err
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}
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n = protowire.ConsumeFieldValue(num, wtyp, b)
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if n < 0 {
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return out, errDecode
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}
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if !discardUnknown && !opts.DiscardUnknown() && mi.unknownOffset.IsValid() {
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u := mi.mutableUnknownBytes(p)
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*u = protowire.AppendTag(*u, num, wtyp)
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*u = append(*u, b[:n]...)
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}
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}
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b = b[n:]
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end := start - len(b)
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if lazyDecode && f != nil && f.isLazy {
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if num != lastNum {
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lazyIndex = append(lazyIndex, protolazy.IndexEntry{
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FieldNum: uint32(num),
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Start: uint32(pos),
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End: uint32(end),
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})
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} else {
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i := len(lazyIndex) - 1
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lazyIndex[i].End = uint32(end)
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lazyIndex[i].MultipleContiguous = true
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}
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}
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if num < lastNum {
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outOfOrder = true
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}
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pos = end
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lastNum = num
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}
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if groupTag != 0 {
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return out, errors.New("missing end group marker")
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}
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if lazyFields != nil {
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// Some fields failed validation, and now need to be unmarshaled.
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for f, action := range lazyFields {
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if action != lazyUnmarshalLater {
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continue
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}
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initialized = false
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if *lazy == nil {
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*lazy = &protolazy.XXX_lazyUnmarshalInfo{}
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}
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if err := mi.unmarshalField((*lazy).Buffer(), p.Apply(f.offset), f, *lazy, opts.flags); err != nil {
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return out, err
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}
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presence.SetPresentUnatomic(f.presenceIndex, mi.presenceSize)
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}
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}
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if lazyDecode {
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if outOfOrder {
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sort.Slice(lazyIndex, func(i, j int) bool {
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return lazyIndex[i].FieldNum < lazyIndex[j].FieldNum ||
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(lazyIndex[i].FieldNum == lazyIndex[j].FieldNum &&
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lazyIndex[i].Start < lazyIndex[j].Start)
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})
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}
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if *lazy == nil {
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*lazy = &protolazy.XXX_lazyUnmarshalInfo{}
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}
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(*lazy).SetIndex(lazyIndex)
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}
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if mi.numRequiredFields > 0 && bits.OnesCount64(requiredMask) != int(mi.numRequiredFields) {
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initialized = false
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}
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if initialized {
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out.initialized = true
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}
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out.n = start - len(b)
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return out, nil
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}
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