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5ea04bdfd3
Beego/vendor/github.com/gogo/protobuf/proto/table_marshal.go
astaxie 5ea04bdfd3 update mod
2018-11-09 12:37:28 +08:00

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// Go support for Protocol Buffers - Google's data interchange format
//
// Copyright 2016 The Go Authors. All rights reserved.
// https://github.com/golang/protobuf
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
package proto
import (
"errors"
"fmt"
"math"
"reflect"
"sort"
"strconv"
"strings"
"sync"
"sync/atomic"
"unicode/utf8"
)
// a sizer takes a pointer to a field and the size of its tag, computes the size of
// the encoded data.
type sizer func(pointer, int) int
// a marshaler takes a byte slice, a pointer to a field, and its tag (in wire format),
// marshals the field to the end of the slice, returns the slice and error (if any).
type marshaler func(b []byte, ptr pointer, wiretag uint64, deterministic bool) ([]byte, error)
// marshalInfo is the information used for marshaling a message.
type marshalInfo struct {
typ reflect.Type
fields []*marshalFieldInfo
unrecognized field // offset of XXX_unrecognized
extensions field // offset of XXX_InternalExtensions
v1extensions field // offset of XXX_extensions
sizecache field // offset of XXX_sizecache
initialized int32 // 0 -- only typ is set, 1 -- fully initialized
messageset bool // uses message set wire format
hasmarshaler bool // has custom marshaler
sync.RWMutex // protect extElems map, also for initialization
extElems map[int32]*marshalElemInfo // info of extension elements
hassizer bool // has custom sizer
hasprotosizer bool // has custom protosizer
bytesExtensions field // offset of XXX_extensions where the field type is []byte
}
// marshalFieldInfo is the information used for marshaling a field of a message.
type marshalFieldInfo struct {
field field
wiretag uint64 // tag in wire format
tagsize int // size of tag in wire format
sizer sizer
marshaler marshaler
isPointer bool
required bool // field is required
name string // name of the field, for error reporting
oneofElems map[reflect.Type]*marshalElemInfo // info of oneof elements
}
// marshalElemInfo is the information used for marshaling an extension or oneof element.
type marshalElemInfo struct {
wiretag uint64 // tag in wire format
tagsize int // size of tag in wire format
sizer sizer
marshaler marshaler
isptr bool // elem is pointer typed, thus interface of this type is a direct interface (extension only)
}
var (
marshalInfoMap = map[reflect.Type]*marshalInfo{}
marshalInfoLock sync.Mutex
)
// getMarshalInfo returns the information to marshal a given type of message.
// The info it returns may not necessarily initialized.
// t is the type of the message (NOT the pointer to it).
func getMarshalInfo(t reflect.Type) *marshalInfo {
marshalInfoLock.Lock()
u, ok := marshalInfoMap[t]
if !ok {
u = &marshalInfo{typ: t}
marshalInfoMap[t] = u
}
marshalInfoLock.Unlock()
return u
}
// Size is the entry point from generated code,
// and should be ONLY called by generated code.
// It computes the size of encoded data of msg.
// a is a pointer to a place to store cached marshal info.
func (a *InternalMessageInfo) Size(msg Message) int {
u := getMessageMarshalInfo(msg, a)
ptr := toPointer(&msg)
if ptr.isNil() {
// We get here if msg is a typed nil ((*SomeMessage)(nil)),
// so it satisfies the interface, and msg == nil wouldn't
// catch it. We don't want crash in this case.
return 0
}
return u.size(ptr)
}
// Marshal is the entry point from generated code,
// and should be ONLY called by generated code.
// It marshals msg to the end of b.
// a is a pointer to a place to store cached marshal info.
func (a *InternalMessageInfo) Marshal(b []byte, msg Message, deterministic bool) ([]byte, error) {
u := getMessageMarshalInfo(msg, a)
ptr := toPointer(&msg)
if ptr.isNil() {
// We get here if msg is a typed nil ((*SomeMessage)(nil)),
// so it satisfies the interface, and msg == nil wouldn't
// catch it. We don't want crash in this case.
return b, ErrNil
}
return u.marshal(b, ptr, deterministic)
}
func getMessageMarshalInfo(msg interface{}, a *InternalMessageInfo) *marshalInfo {
// u := a.marshal, but atomically.
// We use an atomic here to ensure memory consistency.
u := atomicLoadMarshalInfo(&a.marshal)
if u == nil {
// Get marshal information from type of message.
t := reflect.ValueOf(msg).Type()
if t.Kind() != reflect.Ptr {
panic(fmt.Sprintf("cannot handle non-pointer message type %v", t))
}
u = getMarshalInfo(t.Elem())
// Store it in the cache for later users.
// a.marshal = u, but atomically.
atomicStoreMarshalInfo(&a.marshal, u)
}
return u
}
// size is the main function to compute the size of the encoded data of a message.
// ptr is the pointer to the message.
func (u *marshalInfo) size(ptr pointer) int {
if atomic.LoadInt32(&u.initialized) == 0 {
u.computeMarshalInfo()
}
// If the message can marshal itself, let it do it, for compatibility.
// NOTE: This is not efficient.
if u.hasmarshaler {
// Uses the message's Size method if available
if u.hassizer {
s := ptr.asPointerTo(u.typ).Interface().(Sizer)
return s.Size()
}
// Uses the message's ProtoSize method if available
if u.hasprotosizer {
s := ptr.asPointerTo(u.typ).Interface().(ProtoSizer)
return s.ProtoSize()
}
m := ptr.asPointerTo(u.typ).Interface().(Marshaler)
b, _ := m.Marshal()
return len(b)
}
n := 0
for _, f := range u.fields {
if f.isPointer && ptr.offset(f.field).getPointer().isNil() {
// nil pointer always marshals to nothing
continue
}
n += f.sizer(ptr.offset(f.field), f.tagsize)
}
if u.extensions.IsValid() {
e := ptr.offset(u.extensions).toExtensions()
if u.messageset {
n += u.sizeMessageSet(e)
} else {
n += u.sizeExtensions(e)
}
}
if u.v1extensions.IsValid() {
m := *ptr.offset(u.v1extensions).toOldExtensions()
n += u.sizeV1Extensions(m)
}
if u.bytesExtensions.IsValid() {
s := *ptr.offset(u.bytesExtensions).toBytes()
n += len(s)
}
if u.unrecognized.IsValid() {
s := *ptr.offset(u.unrecognized).toBytes()
n += len(s)
}
// cache the result for use in marshal
if u.sizecache.IsValid() {
atomic.StoreInt32(ptr.offset(u.sizecache).toInt32(), int32(n))
}
return n
}
// cachedsize gets the size from cache. If there is no cache (i.e. message is not generated),
// fall back to compute the size.
func (u *marshalInfo) cachedsize(ptr pointer) int {
if u.sizecache.IsValid() {
return int(atomic.LoadInt32(ptr.offset(u.sizecache).toInt32()))
}
return u.size(ptr)
}
// marshal is the main function to marshal a message. It takes a byte slice and appends
// the encoded data to the end of the slice, returns the slice and error (if any).
// ptr is the pointer to the message.
// If deterministic is true, map is marshaled in deterministic order.
func (u *marshalInfo) marshal(b []byte, ptr pointer, deterministic bool) ([]byte, error) {
if atomic.LoadInt32(&u.initialized) == 0 {
u.computeMarshalInfo()
}
// If the message can marshal itself, let it do it, for compatibility.
// NOTE: This is not efficient.
if u.hasmarshaler {
if deterministic {
return nil, errors.New("proto: deterministic not supported by the Marshal method of " + u.typ.String())
}
m := ptr.asPointerTo(u.typ).Interface().(Marshaler)
b1, err := m.Marshal()
b = append(b, b1...)
return b, err
}
var err, errreq error
// The old marshaler encodes extensions at beginning.
if u.extensions.IsValid() {
e := ptr.offset(u.extensions).toExtensions()
if u.messageset {
b, err = u.appendMessageSet(b, e, deterministic)
} else {
b, err = u.appendExtensions(b, e, deterministic)
}
if err != nil {
return b, err
}
}
if u.v1extensions.IsValid() {
m := *ptr.offset(u.v1extensions).toOldExtensions()
b, err = u.appendV1Extensions(b, m, deterministic)
if err != nil {
return b, err
}
}
if u.bytesExtensions.IsValid() {
s := *ptr.offset(u.bytesExtensions).toBytes()
b = append(b, s...)
}
for _, f := range u.fields {
if f.required && errreq == nil {
if ptr.offset(f.field).getPointer().isNil() {
// Required field is not set.
// We record the error but keep going, to give a complete marshaling.
errreq = &RequiredNotSetError{f.name}
continue
}
}
if f.isPointer && ptr.offset(f.field).getPointer().isNil() {
// nil pointer always marshals to nothing
continue
}
b, err = f.marshaler(b, ptr.offset(f.field), f.wiretag, deterministic)
if err != nil {
if err1, ok := err.(*RequiredNotSetError); ok {
// Required field in submessage is not set.
// We record the error but keep going, to give a complete marshaling.
if errreq == nil {
errreq = &RequiredNotSetError{f.name + "." + err1.field}
}
continue
}
if err == errRepeatedHasNil {
err = errors.New("proto: repeated field " + f.name + " has nil element")
}
return b, err
}
}
if u.unrecognized.IsValid() {
s := *ptr.offset(u.unrecognized).toBytes()
b = append(b, s...)
}
return b, errreq
}
// computeMarshalInfo initializes the marshal info.
func (u *marshalInfo) computeMarshalInfo() {
u.Lock()
defer u.Unlock()
if u.initialized != 0 { // non-atomic read is ok as it is protected by the lock
return
}
t := u.typ
u.unrecognized = invalidField
u.extensions = invalidField
u.v1extensions = invalidField
u.bytesExtensions = invalidField
u.sizecache = invalidField
isOneofMessage := false
if reflect.PtrTo(t).Implements(sizerType) {
u.hassizer = true
}
if reflect.PtrTo(t).Implements(protosizerType) {
u.hasprotosizer = true
}
// If the message can marshal itself, let it do it, for compatibility.
// NOTE: This is not efficient.
if reflect.PtrTo(t).Implements(marshalerType) {
u.hasmarshaler = true
atomic.StoreInt32(&u.initialized, 1)
return
}
n := t.NumField()
// deal with XXX fields first
for i := 0; i < t.NumField(); i++ {
f := t.Field(i)
if f.Tag.Get("protobuf_oneof") != "" {
isOneofMessage = true
}
if !strings.HasPrefix(f.Name, "XXX_") {
continue
}
switch f.Name {
case "XXX_sizecache":
u.sizecache = toField(&f)
case "XXX_unrecognized":
u.unrecognized = toField(&f)
case "XXX_InternalExtensions":
u.extensions = toField(&f)
u.messageset = f.Tag.Get("protobuf_messageset") == "1"
case "XXX_extensions":
if f.Type.Kind() == reflect.Map {
u.v1extensions = toField(&f)
} else {
u.bytesExtensions = toField(&f)
}
case "XXX_NoUnkeyedLiteral":
// nothing to do
default:
panic("unknown XXX field: " + f.Name)
}
n--
}
// get oneof implementers
var oneofImplementers []interface{}
// gogo: isOneofMessage is needed for embedded oneof messages, without a marshaler and unmarshaler
if m, ok := reflect.Zero(reflect.PtrTo(t)).Interface().(oneofMessage); ok && isOneofMessage {
_, _, _, oneofImplementers = m.XXX_OneofFuncs()
}
// normal fields
fields := make([]marshalFieldInfo, n) // batch allocation
u.fields = make([]*marshalFieldInfo, 0, n)
for i, j := 0, 0; i < t.NumField(); i++ {
f := t.Field(i)
if strings.HasPrefix(f.Name, "XXX_") {
continue
}
field := &fields[j]
j++
field.name = f.Name
u.fields = append(u.fields, field)
if f.Tag.Get("protobuf_oneof") != "" {
field.computeOneofFieldInfo(&f, oneofImplementers)
continue
}
if f.Tag.Get("protobuf") == "" {
// field has no tag (not in generated message), ignore it
u.fields = u.fields[:len(u.fields)-1]
j--
continue
}
field.computeMarshalFieldInfo(&f)
}
// fields are marshaled in tag order on the wire.
sort.Sort(byTag(u.fields))
atomic.StoreInt32(&u.initialized, 1)
}
// helper for sorting fields by tag
type byTag []*marshalFieldInfo
func (a byTag) Len() int { return len(a) }
func (a byTag) Swap(i, j int) { a[i], a[j] = a[j], a[i] }
func (a byTag) Less(i, j int) bool { return a[i].wiretag < a[j].wiretag }
// getExtElemInfo returns the information to marshal an extension element.
// The info it returns is initialized.
func (u *marshalInfo) getExtElemInfo(desc *ExtensionDesc) *marshalElemInfo {
// get from cache first
u.RLock()
e, ok := u.extElems[desc.Field]
u.RUnlock()
if ok {
return e
}
t := reflect.TypeOf(desc.ExtensionType) // pointer or slice to basic type or struct
tags := strings.Split(desc.Tag, ",")
tag, err := strconv.Atoi(tags[1])
if err != nil {
panic("tag is not an integer")
}
wt := wiretype(tags[0])
sizr, marshalr := typeMarshaler(t, tags, false, false)
e = &marshalElemInfo{
wiretag: uint64(tag)<<3 | wt,
tagsize: SizeVarint(uint64(tag) << 3),
sizer: sizr,
marshaler: marshalr,
isptr: t.Kind() == reflect.Ptr,
}
// update cache
u.Lock()
if u.extElems == nil {
u.extElems = make(map[int32]*marshalElemInfo)
}
u.extElems[desc.Field] = e
u.Unlock()
return e
}
// computeMarshalFieldInfo fills up the information to marshal a field.
func (fi *marshalFieldInfo) computeMarshalFieldInfo(f *reflect.StructField) {
// parse protobuf tag of the field.
// tag has format of "bytes,49,opt,name=foo,def=hello!"
tags := strings.Split(f.Tag.Get("protobuf"), ",")
if tags[0] == "" {
return
}
tag, err := strconv.Atoi(tags[1])
if err != nil {
panic("tag is not an integer")
}
wt := wiretype(tags[0])
if tags[2] == "req" {
fi.required = true
}
fi.setTag(f, tag, wt)
fi.setMarshaler(f, tags)
}
func (fi *marshalFieldInfo) computeOneofFieldInfo(f *reflect.StructField, oneofImplementers []interface{}) {
fi.field = toField(f)
fi.wiretag = 1<<31 - 1 // Use a large tag number, make oneofs sorted at the end. This tag will not appear on the wire.
fi.isPointer = true
fi.sizer, fi.marshaler = makeOneOfMarshaler(fi, f)
fi.oneofElems = make(map[reflect.Type]*marshalElemInfo)
ityp := f.Type // interface type
for _, o := range oneofImplementers {
t := reflect.TypeOf(o)
if !t.Implements(ityp) {
continue
}
sf := t.Elem().Field(0) // oneof implementer is a struct with a single field
tags := strings.Split(sf.Tag.Get("protobuf"), ",")
tag, err := strconv.Atoi(tags[1])
if err != nil {
panic("tag is not an integer")
}
wt := wiretype(tags[0])
sizr, marshalr := typeMarshaler(sf.Type, tags, false, true) // oneof should not omit any zero value
fi.oneofElems[t.Elem()] = &marshalElemInfo{
wiretag: uint64(tag)<<3 | wt,
tagsize: SizeVarint(uint64(tag) << 3),
sizer: sizr,
marshaler: marshalr,
}
}
}
type oneofMessage interface {
XXX_OneofFuncs() (func(Message, *Buffer) error, func(Message, int, int, *Buffer) (bool, error), func(Message) int, []interface{})
}
// wiretype returns the wire encoding of the type.
func wiretype(encoding string) uint64 {
switch encoding {
case "fixed32":
return WireFixed32
case "fixed64":
return WireFixed64
case "varint", "zigzag32", "zigzag64":
return WireVarint
case "bytes":
return WireBytes
case "group":
return WireStartGroup
}
panic("unknown wire type " + encoding)
}
// setTag fills up the tag (in wire format) and its size in the info of a field.
func (fi *marshalFieldInfo) setTag(f *reflect.StructField, tag int, wt uint64) {
fi.field = toField(f)
fi.wiretag = uint64(tag)<<3 | wt
fi.tagsize = SizeVarint(uint64(tag) << 3)
}
// setMarshaler fills up the sizer and marshaler in the info of a field.
func (fi *marshalFieldInfo) setMarshaler(f *reflect.StructField, tags []string) {
switch f.Type.Kind() {
case reflect.Map:
// map field
fi.isPointer = true
fi.sizer, fi.marshaler = makeMapMarshaler(f)
return
case reflect.Ptr, reflect.Slice:
fi.isPointer = true
}
fi.sizer, fi.marshaler = typeMarshaler(f.Type, tags, true, false)
}
// typeMarshaler returns the sizer and marshaler of a given field.
// t is the type of the field.
// tags is the generated "protobuf" tag of the field.
// If nozero is true, zero value is not marshaled to the wire.
// If oneof is true, it is a oneof field.
func typeMarshaler(t reflect.Type, tags []string, nozero, oneof bool) (sizer, marshaler) {
encoding := tags[0]
pointer := false
slice := false
if t.Kind() == reflect.Slice && t.Elem().Kind() != reflect.Uint8 {
slice = true
t = t.Elem()
}
if t.Kind() == reflect.Ptr {
pointer = true
t = t.Elem()
}
packed := false
proto3 := false
ctype := false
isTime := false
isDuration := false
for i := 2; i < len(tags); i++ {
if tags[i] == "packed" {
packed = true
}
if tags[i] == "proto3" {
proto3 = true
}
if strings.HasPrefix(tags[i], "customtype=") {
ctype = true
}
if tags[i] == "stdtime" {
isTime = true
}
if tags[i] == "stdduration" {
isDuration = true
}
}
if !proto3 && !pointer && !slice {
nozero = false
}
if ctype {
if reflect.PtrTo(t).Implements(customType) {
if slice {
return makeMessageRefSliceMarshaler(getMarshalInfo(t))
}
if pointer {
return makeCustomPtrMarshaler(getMarshalInfo(t))
}
return makeCustomMarshaler(getMarshalInfo(t))
} else {
panic(fmt.Sprintf("custom type: type: %v, does not implement the proto.custom interface", t))
}
}
if isTime {
if pointer {
if slice {
return makeTimePtrSliceMarshaler(getMarshalInfo(t))
}
return makeTimePtrMarshaler(getMarshalInfo(t))
}
if slice {
return makeTimeSliceMarshaler(getMarshalInfo(t))
}
return makeTimeMarshaler(getMarshalInfo(t))
}
if isDuration {
if pointer {
if slice {
return makeDurationPtrSliceMarshaler(getMarshalInfo(t))
}
return makeDurationPtrMarshaler(getMarshalInfo(t))
}
if slice {
return makeDurationSliceMarshaler(getMarshalInfo(t))
}
return makeDurationMarshaler(getMarshalInfo(t))
}
switch t.Kind() {
case reflect.Bool:
if pointer {
return sizeBoolPtr, appendBoolPtr
}
if slice {
if packed {
return sizeBoolPackedSlice, appendBoolPackedSlice
}
return sizeBoolSlice, appendBoolSlice
}
if nozero {
return sizeBoolValueNoZero, appendBoolValueNoZero
}
return sizeBoolValue, appendBoolValue
case reflect.Uint32:
switch encoding {
case "fixed32":
if pointer {
return sizeFixed32Ptr, appendFixed32Ptr
}
if slice {
if packed {
return sizeFixed32PackedSlice, appendFixed32PackedSlice
}
return sizeFixed32Slice, appendFixed32Slice
}
if nozero {
return sizeFixed32ValueNoZero, appendFixed32ValueNoZero
}
return sizeFixed32Value, appendFixed32Value
case "varint":
if pointer {
return sizeVarint32Ptr, appendVarint32Ptr
}
if slice {
if packed {
return sizeVarint32PackedSlice, appendVarint32PackedSlice
}
return sizeVarint32Slice, appendVarint32Slice
}
if nozero {
return sizeVarint32ValueNoZero, appendVarint32ValueNoZero
}
return sizeVarint32Value, appendVarint32Value
}
case reflect.Int32:
switch encoding {
case "fixed32":
if pointer {
return sizeFixedS32Ptr, appendFixedS32Ptr
}
if slice {
if packed {
return sizeFixedS32PackedSlice, appendFixedS32PackedSlice
}
return sizeFixedS32Slice, appendFixedS32Slice
}
if nozero {
return sizeFixedS32ValueNoZero, appendFixedS32ValueNoZero
}
return sizeFixedS32Value, appendFixedS32Value
case "varint":
if pointer {
return sizeVarintS32Ptr, appendVarintS32Ptr
}
if slice {
if packed {
return sizeVarintS32PackedSlice, appendVarintS32PackedSlice
}
return sizeVarintS32Slice, appendVarintS32Slice
}
if nozero {
return sizeVarintS32ValueNoZero, appendVarintS32ValueNoZero
}
return sizeVarintS32Value, appendVarintS32Value
case "zigzag32":
if pointer {
return sizeZigzag32Ptr, appendZigzag32Ptr
}
if slice {
if packed {
return sizeZigzag32PackedSlice, appendZigzag32PackedSlice
}
return sizeZigzag32Slice, appendZigzag32Slice
}
if nozero {
return sizeZigzag32ValueNoZero, appendZigzag32ValueNoZero
}
return sizeZigzag32Value, appendZigzag32Value
}
case reflect.Uint64:
switch encoding {
case "fixed64":
if pointer {
return sizeFixed64Ptr, appendFixed64Ptr
}
if slice {
if packed {
return sizeFixed64PackedSlice, appendFixed64PackedSlice
}
return sizeFixed64Slice, appendFixed64Slice
}
if nozero {
return sizeFixed64ValueNoZero, appendFixed64ValueNoZero
}
return sizeFixed64Value, appendFixed64Value
case "varint":
if pointer {
return sizeVarint64Ptr, appendVarint64Ptr
}
if slice {
if packed {
return sizeVarint64PackedSlice, appendVarint64PackedSlice
}
return sizeVarint64Slice, appendVarint64Slice
}
if nozero {
return sizeVarint64ValueNoZero, appendVarint64ValueNoZero
}
return sizeVarint64Value, appendVarint64Value
}
case reflect.Int64:
switch encoding {
case "fixed64":
if pointer {
return sizeFixedS64Ptr, appendFixedS64Ptr
}
if slice {
if packed {
return sizeFixedS64PackedSlice, appendFixedS64PackedSlice
}
return sizeFixedS64Slice, appendFixedS64Slice
}
if nozero {
return sizeFixedS64ValueNoZero, appendFixedS64ValueNoZero
}
return sizeFixedS64Value, appendFixedS64Value
case "varint":
if pointer {
return sizeVarintS64Ptr, appendVarintS64Ptr
}
if slice {
if packed {
return sizeVarintS64PackedSlice, appendVarintS64PackedSlice
}
return sizeVarintS64Slice, appendVarintS64Slice
}
if nozero {
return sizeVarintS64ValueNoZero, appendVarintS64ValueNoZero
}
return sizeVarintS64Value, appendVarintS64Value
case "zigzag64":
if pointer {
return sizeZigzag64Ptr, appendZigzag64Ptr
}
if slice {
if packed {
return sizeZigzag64PackedSlice, appendZigzag64PackedSlice
}
return sizeZigzag64Slice, appendZigzag64Slice
}
if nozero {
return sizeZigzag64ValueNoZero, appendZigzag64ValueNoZero
}
return sizeZigzag64Value, appendZigzag64Value
}
case reflect.Float32:
if pointer {
return sizeFloat32Ptr, appendFloat32Ptr
}
if slice {
if packed {
return sizeFloat32PackedSlice, appendFloat32PackedSlice
}
return sizeFloat32Slice, appendFloat32Slice
}
if nozero {
return sizeFloat32ValueNoZero, appendFloat32ValueNoZero
}
return sizeFloat32Value, appendFloat32Value
case reflect.Float64:
if pointer {
return sizeFloat64Ptr, appendFloat64Ptr
}
if slice {
if packed {
return sizeFloat64PackedSlice, appendFloat64PackedSlice
}
return sizeFloat64Slice, appendFloat64Slice
}
if nozero {
return sizeFloat64ValueNoZero, appendFloat64ValueNoZero
}
return sizeFloat64Value, appendFloat64Value
case reflect.String:
if pointer {
return sizeStringPtr, appendStringPtr
}
if slice {
return sizeStringSlice, appendStringSlice
}
if nozero {
return sizeStringValueNoZero, appendStringValueNoZero
}
return sizeStringValue, appendStringValue
case reflect.Slice:
if slice {
return sizeBytesSlice, appendBytesSlice
}
if oneof {
// Oneof bytes field may also have "proto3" tag.
// We want to marshal it as a oneof field. Do this
// check before the proto3 check.
return sizeBytesOneof, appendBytesOneof
}
if proto3 {
return sizeBytes3, appendBytes3
}
return sizeBytes, appendBytes
case reflect.Struct:
switch encoding {
case "group":
if slice {
return makeGroupSliceMarshaler(getMarshalInfo(t))
}
return makeGroupMarshaler(getMarshalInfo(t))
case "bytes":
if pointer {
if slice {
return makeMessageSliceMarshaler(getMarshalInfo(t))
}
return makeMessageMarshaler(getMarshalInfo(t))
} else {
if slice {
return makeMessageRefSliceMarshaler(getMarshalInfo(t))
}
return makeMessageRefMarshaler(getMarshalInfo(t))
}
}
}
panic(fmt.Sprintf("unknown or mismatched type: type: %v, wire type: %v", t, encoding))
}
// Below are functions to size/marshal a specific type of a field.
// They are stored in the field's info, and called by function pointers.
// They have type sizer or marshaler.
func sizeFixed32Value(_ pointer, tagsize int) int {
return 4 + tagsize
}
func sizeFixed32ValueNoZero(ptr pointer, tagsize int) int {
v := *ptr.toUint32()
if v == 0 {
return 0
}
return 4 + tagsize
}
func sizeFixed32Ptr(ptr pointer, tagsize int) int {
p := *ptr.toUint32Ptr()
if p == nil {
return 0
}
return 4 + tagsize
}
func sizeFixed32Slice(ptr pointer, tagsize int) int {
s := *ptr.toUint32Slice()
return (4 + tagsize) * len(s)
}
func sizeFixed32PackedSlice(ptr pointer, tagsize int) int {
s := *ptr.toUint32Slice()
if len(s) == 0 {
return 0
}
return 4*len(s) + SizeVarint(uint64(4*len(s))) + tagsize
}
func sizeFixedS32Value(_ pointer, tagsize int) int {
return 4 + tagsize
}
func sizeFixedS32ValueNoZero(ptr pointer, tagsize int) int {
v := *ptr.toInt32()
if v == 0 {
return 0
}
return 4 + tagsize
}
func sizeFixedS32Ptr(ptr pointer, tagsize int) int {
p := ptr.getInt32Ptr()
if p == nil {
return 0
}
return 4 + tagsize
}
func sizeFixedS32Slice(ptr pointer, tagsize int) int {
s := ptr.getInt32Slice()
return (4 + tagsize) * len(s)
}
func sizeFixedS32PackedSlice(ptr pointer, tagsize int) int {
s := ptr.getInt32Slice()
if len(s) == 0 {
return 0
}
return 4*len(s) + SizeVarint(uint64(4*len(s))) + tagsize
}
func sizeFloat32Value(_ pointer, tagsize int) int {
return 4 + tagsize
}
func sizeFloat32ValueNoZero(ptr pointer, tagsize int) int {
v := math.Float32bits(*ptr.toFloat32())
if v == 0 {
return 0
}
return 4 + tagsize
}
func sizeFloat32Ptr(ptr pointer, tagsize int) int {
p := *ptr.toFloat32Ptr()
if p == nil {
return 0
}
return 4 + tagsize
}
func sizeFloat32Slice(ptr pointer, tagsize int) int {
s := *ptr.toFloat32Slice()
return (4 + tagsize) * len(s)
}
func sizeFloat32PackedSlice(ptr pointer, tagsize int) int {
s := *ptr.toFloat32Slice()
if len(s) == 0 {
return 0
}
return 4*len(s) + SizeVarint(uint64(4*len(s))) + tagsize
}
func sizeFixed64Value(_ pointer, tagsize int) int {
return 8 + tagsize
}
func sizeFixed64ValueNoZero(ptr pointer, tagsize int) int {
v := *ptr.toUint64()
if v == 0 {
return 0
}
return 8 + tagsize
}
func sizeFixed64Ptr(ptr pointer, tagsize int) int {
p := *ptr.toUint64Ptr()
if p == nil {
return 0
}
return 8 + tagsize
}
func sizeFixed64Slice(ptr pointer, tagsize int) int {
s := *ptr.toUint64Slice()
return (8 + tagsize) * len(s)
}
func sizeFixed64PackedSlice(ptr pointer, tagsize int) int {
s := *ptr.toUint64Slice()
if len(s) == 0 {
return 0
}
return 8*len(s) + SizeVarint(uint64(8*len(s))) + tagsize
}
func sizeFixedS64Value(_ pointer, tagsize int) int {
return 8 + tagsize
}
func sizeFixedS64ValueNoZero(ptr pointer, tagsize int) int {
v := *ptr.toInt64()
if v == 0 {
return 0
}
return 8 + tagsize
}
func sizeFixedS64Ptr(ptr pointer, tagsize int) int {
p := *ptr.toInt64Ptr()
if p == nil {
return 0
}
return 8 + tagsize
}
func sizeFixedS64Slice(ptr pointer, tagsize int) int {
s := *ptr.toInt64Slice()
return (8 + tagsize) * len(s)
}
func sizeFixedS64PackedSlice(ptr pointer, tagsize int) int {
s := *ptr.toInt64Slice()
if len(s) == 0 {
return 0
}
return 8*len(s) + SizeVarint(uint64(8*len(s))) + tagsize
}
func sizeFloat64Value(_ pointer, tagsize int) int {
return 8 + tagsize
}
func sizeFloat64ValueNoZero(ptr pointer, tagsize int) int {
v := math.Float64bits(*ptr.toFloat64())
if v == 0 {
return 0
}
return 8 + tagsize
}
func sizeFloat64Ptr(ptr pointer, tagsize int) int {
p := *ptr.toFloat64Ptr()
if p == nil {
return 0
}
return 8 + tagsize
}
func sizeFloat64Slice(ptr pointer, tagsize int) int {
s := *ptr.toFloat64Slice()
return (8 + tagsize) * len(s)
}
func sizeFloat64PackedSlice(ptr pointer, tagsize int) int {
s := *ptr.toFloat64Slice()
if len(s) == 0 {
return 0
}
return 8*len(s) + SizeVarint(uint64(8*len(s))) + tagsize
}
func sizeVarint32Value(ptr pointer, tagsize int) int {
v := *ptr.toUint32()
return SizeVarint(uint64(v)) + tagsize
}
func sizeVarint32ValueNoZero(ptr pointer, tagsize int) int {
v := *ptr.toUint32()
if v == 0 {
return 0
}
return SizeVarint(uint64(v)) + tagsize
}
func sizeVarint32Ptr(ptr pointer, tagsize int) int {
p := *ptr.toUint32Ptr()
if p == nil {
return 0
}
return SizeVarint(uint64(*p)) + tagsize
}
func sizeVarint32Slice(ptr pointer, tagsize int) int {
s := *ptr.toUint32Slice()
n := 0
for _, v := range s {
n += SizeVarint(uint64(v)) + tagsize
}
return n
}
func sizeVarint32PackedSlice(ptr pointer, tagsize int) int {
s := *ptr.toUint32Slice()
if len(s) == 0 {
return 0
}
n := 0
for _, v := range s {
n += SizeVarint(uint64(v))
}
return n + SizeVarint(uint64(n)) + tagsize
}
func sizeVarintS32Value(ptr pointer, tagsize int) int {
v := *ptr.toInt32()
return SizeVarint(uint64(v)) + tagsize
}
func sizeVarintS32ValueNoZero(ptr pointer, tagsize int) int {
v := *ptr.toInt32()
if v == 0 {
return 0
}
return SizeVarint(uint64(v)) + tagsize
}
func sizeVarintS32Ptr(ptr pointer, tagsize int) int {
p := ptr.getInt32Ptr()
if p == nil {
return 0
}
return SizeVarint(uint64(*p)) + tagsize
}
func sizeVarintS32Slice(ptr pointer, tagsize int) int {
s := ptr.getInt32Slice()
n := 0
for _, v := range s {
n += SizeVarint(uint64(v)) + tagsize
}
return n
}
func sizeVarintS32PackedSlice(ptr pointer, tagsize int) int {
s := ptr.getInt32Slice()
if len(s) == 0 {
return 0
}
n := 0
for _, v := range s {
n += SizeVarint(uint64(v))
}
return n + SizeVarint(uint64(n)) + tagsize
}
func sizeVarint64Value(ptr pointer, tagsize int) int {
v := *ptr.toUint64()
return SizeVarint(v) + tagsize
}
func sizeVarint64ValueNoZero(ptr pointer, tagsize int) int {
v := *ptr.toUint64()
if v == 0 {
return 0
}
return SizeVarint(v) + tagsize
}
func sizeVarint64Ptr(ptr pointer, tagsize int) int {
p := *ptr.toUint64Ptr()
if p == nil {
return 0
}
return SizeVarint(*p) + tagsize
}
func sizeVarint64Slice(ptr pointer, tagsize int) int {
s := *ptr.toUint64Slice()
n := 0
for _, v := range s {
n += SizeVarint(v) + tagsize
}
return n
}
func sizeVarint64PackedSlice(ptr pointer, tagsize int) int {
s := *ptr.toUint64Slice()
if len(s) == 0 {
return 0
}
n := 0
for _, v := range s {
n += SizeVarint(v)
}
return n + SizeVarint(uint64(n)) + tagsize
}
func sizeVarintS64Value(ptr pointer, tagsize int) int {
v := *ptr.toInt64()
return SizeVarint(uint64(v)) + tagsize
}
func sizeVarintS64ValueNoZero(ptr pointer, tagsize int) int {
v := *ptr.toInt64()
if v == 0 {
return 0
}
return SizeVarint(uint64(v)) + tagsize
}
func sizeVarintS64Ptr(ptr pointer, tagsize int) int {
p := *ptr.toInt64Ptr()
if p == nil {
return 0
}
return SizeVarint(uint64(*p)) + tagsize
}
func sizeVarintS64Slice(ptr pointer, tagsize int) int {
s := *ptr.toInt64Slice()
n := 0
for _, v := range s {
n += SizeVarint(uint64(v)) + tagsize
}
return n
}
func sizeVarintS64PackedSlice(ptr pointer, tagsize int) int {
s := *ptr.toInt64Slice()
if len(s) == 0 {
return 0
}
n := 0
for _, v := range s {
n += SizeVarint(uint64(v))
}
return n + SizeVarint(uint64(n)) + tagsize
}
func sizeZigzag32Value(ptr pointer, tagsize int) int {
v := *ptr.toInt32()
return SizeVarint(uint64((uint32(v)<<1)^uint32((int32(v)>>31)))) + tagsize
}
func sizeZigzag32ValueNoZero(ptr pointer, tagsize int) int {
v := *ptr.toInt32()
if v == 0 {
return 0
}
return SizeVarint(uint64((uint32(v)<<1)^uint32((int32(v)>>31)))) + tagsize
}
func sizeZigzag32Ptr(ptr pointer, tagsize int) int {
p := ptr.getInt32Ptr()
if p == nil {
return 0
}
v := *p
return SizeVarint(uint64((uint32(v)<<1)^uint32((int32(v)>>31)))) + tagsize
}
func sizeZigzag32Slice(ptr pointer, tagsize int) int {
s := ptr.getInt32Slice()
n := 0
for _, v := range s {
n += SizeVarint(uint64((uint32(v)<<1)^uint32((int32(v)>>31)))) + tagsize
}
return n
}
func sizeZigzag32PackedSlice(ptr pointer, tagsize int) int {
s := ptr.getInt32Slice()
if len(s) == 0 {
return 0
}
n := 0
for _, v := range s {
n += SizeVarint(uint64((uint32(v) << 1) ^ uint32((int32(v) >> 31))))
}
return n + SizeVarint(uint64(n)) + tagsize
}
func sizeZigzag64Value(ptr pointer, tagsize int) int {
v := *ptr.toInt64()
return SizeVarint(uint64(v<<1)^uint64((int64(v)>>63))) + tagsize
}
func sizeZigzag64ValueNoZero(ptr pointer, tagsize int) int {
v := *ptr.toInt64()
if v == 0 {
return 0
}
return SizeVarint(uint64(v<<1)^uint64((int64(v)>>63))) + tagsize
}
func sizeZigzag64Ptr(ptr pointer, tagsize int) int {
p := *ptr.toInt64Ptr()
if p == nil {
return 0
}
v := *p
return SizeVarint(uint64(v<<1)^uint64((int64(v)>>63))) + tagsize
}
func sizeZigzag64Slice(ptr pointer, tagsize int) int {
s := *ptr.toInt64Slice()
n := 0
for _, v := range s {
n += SizeVarint(uint64(v<<1)^uint64((int64(v)>>63))) + tagsize
}
return n
}
func sizeZigzag64PackedSlice(ptr pointer, tagsize int) int {
s := *ptr.toInt64Slice()
if len(s) == 0 {
return 0
}
n := 0
for _, v := range s {
n += SizeVarint(uint64(v<<1) ^ uint64((int64(v) >> 63)))
}
return n + SizeVarint(uint64(n)) + tagsize
}
func sizeBoolValue(_ pointer, tagsize int) int {
return 1 + tagsize
}
func sizeBoolValueNoZero(ptr pointer, tagsize int) int {
v := *ptr.toBool()
if !v {
return 0
}
return 1 + tagsize
}
func sizeBoolPtr(ptr pointer, tagsize int) int {
p := *ptr.toBoolPtr()
if p == nil {
return 0
}
return 1 + tagsize
}
func sizeBoolSlice(ptr pointer, tagsize int) int {
s := *ptr.toBoolSlice()
return (1 + tagsize) * len(s)
}
func sizeBoolPackedSlice(ptr pointer, tagsize int) int {
s := *ptr.toBoolSlice()
if len(s) == 0 {
return 0
}
return len(s) + SizeVarint(uint64(len(s))) + tagsize
}
func sizeStringValue(ptr pointer, tagsize int) int {
v := *ptr.toString()
return len(v) + SizeVarint(uint64(len(v))) + tagsize
}
func sizeStringValueNoZero(ptr pointer, tagsize int) int {
v := *ptr.toString()
if v == "" {
return 0
}
return len(v) + SizeVarint(uint64(len(v))) + tagsize
}
func sizeStringPtr(ptr pointer, tagsize int) int {
p := *ptr.toStringPtr()
if p == nil {
return 0
}
v := *p
return len(v) + SizeVarint(uint64(len(v))) + tagsize
}
func sizeStringSlice(ptr pointer, tagsize int) int {
s := *ptr.toStringSlice()
n := 0
for _, v := range s {
n += len(v) + SizeVarint(uint64(len(v))) + tagsize
}
return n
}
func sizeBytes(ptr pointer, tagsize int) int {
v := *ptr.toBytes()
if v == nil {
return 0
}
return len(v) + SizeVarint(uint64(len(v))) + tagsize
}
func sizeBytes3(ptr pointer, tagsize int) int {
v := *ptr.toBytes()
if len(v) == 0 {
return 0
}
return len(v) + SizeVarint(uint64(len(v))) + tagsize
}
func sizeBytesOneof(ptr pointer, tagsize int) int {
v := *ptr.toBytes()
return len(v) + SizeVarint(uint64(len(v))) + tagsize
}
func sizeBytesSlice(ptr pointer, tagsize int) int {
s := *ptr.toBytesSlice()
n := 0
for _, v := range s {
n += len(v) + SizeVarint(uint64(len(v))) + tagsize
}
return n
}
// appendFixed32 appends an encoded fixed32 to b.
func appendFixed32(b []byte, v uint32) []byte {
b = append(b,
byte(v),
byte(v>>8),
byte(v>>16),
byte(v>>24))
return b
}
// appendFixed64 appends an encoded fixed64 to b.
func appendFixed64(b []byte, v uint64) []byte {
b = append(b,
byte(v),
byte(v>>8),
byte(v>>16),
byte(v>>24),
byte(v>>32),
byte(v>>40),
byte(v>>48),
byte(v>>56))
return b
}
// appendVarint appends an encoded varint to b.
func appendVarint(b []byte, v uint64) []byte {
// TODO: make 1-byte (maybe 2-byte) case inline-able, once we
// have non-leaf inliner.
switch {
case v < 1<<7:
b = append(b, byte(v))
case v < 1<<14:
b = append(b,
byte(v&0x7f|0x80),
byte(v>>7))
case v < 1<<21:
b = append(b,
byte(v&0x7f|0x80),
byte((v>>7)&0x7f|0x80),
byte(v>>14))
case v < 1<<28:
b = append(b,
byte(v&0x7f|0x80),
byte((v>>7)&0x7f|0x80),
byte((v>>14)&0x7f|0x80),
byte(v>>21))
case v < 1<<35:
b = append(b,
byte(v&0x7f|0x80),
byte((v>>7)&0x7f|0x80),
byte((v>>14)&0x7f|0x80),
byte((v>>21)&0x7f|0x80),
byte(v>>28))
case v < 1<<42:
b = append(b,
byte(v&0x7f|0x80),
byte((v>>7)&0x7f|0x80),
byte((v>>14)&0x7f|0x80),
byte((v>>21)&0x7f|0x80),
byte((v>>28)&0x7f|0x80),
byte(v>>35))
case v < 1<<49:
b = append(b,
byte(v&0x7f|0x80),
byte((v>>7)&0x7f|0x80),
byte((v>>14)&0x7f|0x80),
byte((v>>21)&0x7f|0x80),
byte((v>>28)&0x7f|0x80),
byte((v>>35)&0x7f|0x80),
byte(v>>42))
case v < 1<<56:
b = append(b,
byte(v&0x7f|0x80),
byte((v>>7)&0x7f|0x80),
byte((v>>14)&0x7f|0x80),
byte((v>>21)&0x7f|0x80),
byte((v>>28)&0x7f|0x80),
byte((v>>35)&0x7f|0x80),
byte((v>>42)&0x7f|0x80),
byte(v>>49))
case v < 1<<63:
b = append(b,
byte(v&0x7f|0x80),
byte((v>>7)&0x7f|0x80),
byte((v>>14)&0x7f|0x80),
byte((v>>21)&0x7f|0x80),
byte((v>>28)&0x7f|0x80),
byte((v>>35)&0x7f|0x80),
byte((v>>42)&0x7f|0x80),
byte((v>>49)&0x7f|0x80),
byte(v>>56))
default:
b = append(b,
byte(v&0x7f|0x80),
byte((v>>7)&0x7f|0x80),
byte((v>>14)&0x7f|0x80),
byte((v>>21)&0x7f|0x80),
byte((v>>28)&0x7f|0x80),
byte((v>>35)&0x7f|0x80),
byte((v>>42)&0x7f|0x80),
byte((v>>49)&0x7f|0x80),
byte((v>>56)&0x7f|0x80),
1)
}
return b
}
func appendFixed32Value(b []byte, ptr pointer, wiretag uint64, _ bool) ([]byte, error) {
v := *ptr.toUint32()
b = appendVarint(b, wiretag)
b = appendFixed32(b, v)
return b, nil
}
func appendFixed32ValueNoZero(b []byte, ptr pointer, wiretag uint64, _ bool) ([]byte, error) {
v := *ptr.toUint32()
if v == 0 {
return b, nil
}
b = appendVarint(b, wiretag)
b = appendFixed32(b, v)
return b, nil
}
func appendFixed32Ptr(b []byte, ptr pointer, wiretag uint64, _ bool) ([]byte, error) {
p := *ptr.toUint32Ptr()
if p == nil {
return b, nil
}
b = appendVarint(b, wiretag)
b = appendFixed32(b, *p)
return b, nil
}
func appendFixed32Slice(b []byte, ptr pointer, wiretag uint64, _ bool) ([]byte, error) {
s := *ptr.toUint32Slice()
for _, v := range s {
b = appendVarint(b, wiretag)
b = appendFixed32(b, v)
}
return b, nil
}
func appendFixed32PackedSlice(b []byte, ptr pointer, wiretag uint64, _ bool) ([]byte, error) {
s := *ptr.toUint32Slice()
if len(s) == 0 {
return b, nil
}
b = appendVarint(b, wiretag&^7|WireBytes)
b = appendVarint(b, uint64(4*len(s)))
for _, v := range s {
b = appendFixed32(b, v)
}
return b, nil
}
func appendFixedS32Value(b []byte, ptr pointer, wiretag uint64, _ bool) ([]byte, error) {
v := *ptr.toInt32()
b = appendVarint(b, wiretag)
b = appendFixed32(b, uint32(v))
return b, nil
}
func appendFixedS32ValueNoZero(b []byte, ptr pointer, wiretag uint64, _ bool) ([]byte, error) {
v := *ptr.toInt32()
if v == 0 {
return b, nil
}
b = appendVarint(b, wiretag)
b = appendFixed32(b, uint32(v))
return b, nil
}
func appendFixedS32Ptr(b []byte, ptr pointer, wiretag uint64, _ bool) ([]byte, error) {
p := ptr.getInt32Ptr()
if p == nil {
return b, nil
}
b = appendVarint(b, wiretag)
b = appendFixed32(b, uint32(*p))
return b, nil
}
func appendFixedS32Slice(b []byte, ptr pointer, wiretag uint64, _ bool) ([]byte, error) {
s := ptr.getInt32Slice()
for _, v := range s {
b = appendVarint(b, wiretag)
b = appendFixed32(b, uint32(v))
}
return b, nil
}
func appendFixedS32PackedSlice(b []byte, ptr pointer, wiretag uint64, _ bool) ([]byte, error) {
s := ptr.getInt32Slice()
if len(s) == 0 {
return b, nil
}
b = appendVarint(b, wiretag&^7|WireBytes)
b = appendVarint(b, uint64(4*len(s)))
for _, v := range s {
b = appendFixed32(b, uint32(v))
}
return b, nil
}
func appendFloat32Value(b []byte, ptr pointer, wiretag uint64, _ bool) ([]byte, error) {
v := math.Float32bits(*ptr.toFloat32())
b = appendVarint(b, wiretag)
b = appendFixed32(b, v)
return b, nil
}
func appendFloat32ValueNoZero(b []byte, ptr pointer, wiretag uint64, _ bool) ([]byte, error) {
v := math.Float32bits(*ptr.toFloat32())
if v == 0 {
return b, nil
}
b = appendVarint(b, wiretag)
b = appendFixed32(b, v)
return b, nil
}
func appendFloat32Ptr(b []byte, ptr pointer, wiretag uint64, _ bool) ([]byte, error) {
p := *ptr.toFloat32Ptr()
if p == nil {
return b, nil
}
b = appendVarint(b, wiretag)
b = appendFixed32(b, math.Float32bits(*p))
return b, nil
}
func appendFloat32Slice(b []byte, ptr pointer, wiretag uint64, _ bool) ([]byte, error) {
s := *ptr.toFloat32Slice()
for _, v := range s {
b = appendVarint(b, wiretag)
b = appendFixed32(b, math.Float32bits(v))
}
return b, nil
}
func appendFloat32PackedSlice(b []byte, ptr pointer, wiretag uint64, _ bool) ([]byte, error) {
s := *ptr.toFloat32Slice()
if len(s) == 0 {
return b, nil
}
b = appendVarint(b, wiretag&^7|WireBytes)
b = appendVarint(b, uint64(4*len(s)))
for _, v := range s {
b = appendFixed32(b, math.Float32bits(v))
}
return b, nil
}
func appendFixed64Value(b []byte, ptr pointer, wiretag uint64, _ bool) ([]byte, error) {
v := *ptr.toUint64()
b = appendVarint(b, wiretag)
b = appendFixed64(b, v)
return b, nil
}
func appendFixed64ValueNoZero(b []byte, ptr pointer, wiretag uint64, _ bool) ([]byte, error) {
v := *ptr.toUint64()
if v == 0 {
return b, nil
}
b = appendVarint(b, wiretag)
b = appendFixed64(b, v)
return b, nil
}
func appendFixed64Ptr(b []byte, ptr pointer, wiretag uint64, _ bool) ([]byte, error) {
p := *ptr.toUint64Ptr()
if p == nil {
return b, nil
}
b = appendVarint(b, wiretag)
b = appendFixed64(b, *p)
return b, nil
}
func appendFixed64Slice(b []byte, ptr pointer, wiretag uint64, _ bool) ([]byte, error) {
s := *ptr.toUint64Slice()
for _, v := range s {
b = appendVarint(b, wiretag)
b = appendFixed64(b, v)
}
return b, nil
}
func appendFixed64PackedSlice(b []byte, ptr pointer, wiretag uint64, _ bool) ([]byte, error) {
s := *ptr.toUint64Slice()
if len(s) == 0 {
return b, nil
}
b = appendVarint(b, wiretag&^7|WireBytes)
b = appendVarint(b, uint64(8*len(s)))
for _, v := range s {
b = appendFixed64(b, v)
}
return b, nil
}
func appendFixedS64Value(b []byte, ptr pointer, wiretag uint64, _ bool) ([]byte, error) {
v := *ptr.toInt64()
b = appendVarint(b, wiretag)
b = appendFixed64(b, uint64(v))
return b, nil
}
func appendFixedS64ValueNoZero(b []byte, ptr pointer, wiretag uint64, _ bool) ([]byte, error) {
v := *ptr.toInt64()
if v == 0 {
return b, nil
}
b = appendVarint(b, wiretag)
b = appendFixed64(b, uint64(v))
return b, nil
}
func appendFixedS64Ptr(b []byte, ptr pointer, wiretag uint64, _ bool) ([]byte, error) {
p := *ptr.toInt64Ptr()
if p == nil {
return b, nil
}
b = appendVarint(b, wiretag)
b = appendFixed64(b, uint64(*p))
return b, nil
}
func appendFixedS64Slice(b []byte, ptr pointer, wiretag uint64, _ bool) ([]byte, error) {
s := *ptr.toInt64Slice()
for _, v := range s {
b = appendVarint(b, wiretag)
b = appendFixed64(b, uint64(v))
}
return b, nil
}
func appendFixedS64PackedSlice(b []byte, ptr pointer, wiretag uint64, _ bool) ([]byte, error) {
s := *ptr.toInt64Slice()
if len(s) == 0 {
return b, nil
}
b = appendVarint(b, wiretag&^7|WireBytes)
b = appendVarint(b, uint64(8*len(s)))
for _, v := range s {
b = appendFixed64(b, uint64(v))
}
return b, nil
}
func appendFloat64Value(b []byte, ptr pointer, wiretag uint64, _ bool) ([]byte, error) {
v := math.Float64bits(*ptr.toFloat64())
b = appendVarint(b, wiretag)
b = appendFixed64(b, v)
return b, nil
}
func appendFloat64ValueNoZero(b []byte, ptr pointer, wiretag uint64, _ bool) ([]byte, error) {
v := math.Float64bits(*ptr.toFloat64())
if v == 0 {
return b, nil
}
b = appendVarint(b, wiretag)
b = appendFixed64(b, v)
return b, nil
}
func appendFloat64Ptr(b []byte, ptr pointer, wiretag uint64, _ bool) ([]byte, error) {
p := *ptr.toFloat64Ptr()
if p == nil {
return b, nil
}
b = appendVarint(b, wiretag)
b = appendFixed64(b, math.Float64bits(*p))
return b, nil
}
func appendFloat64Slice(b []byte, ptr pointer, wiretag uint64, _ bool) ([]byte, error) {
s := *ptr.toFloat64Slice()
for _, v := range s {
b = appendVarint(b, wiretag)
b = appendFixed64(b, math.Float64bits(v))
}
return b, nil
}
func appendFloat64PackedSlice(b []byte, ptr pointer, wiretag uint64, _ bool) ([]byte, error) {
s := *ptr.toFloat64Slice()
if len(s) == 0 {
return b, nil
}
b = appendVarint(b, wiretag&^7|WireBytes)
b = appendVarint(b, uint64(8*len(s)))
for _, v := range s {
b = appendFixed64(b, math.Float64bits(v))
}
return b, nil
}
func appendVarint32Value(b []byte, ptr pointer, wiretag uint64, _ bool) ([]byte, error) {
v := *ptr.toUint32()
b = appendVarint(b, wiretag)
b = appendVarint(b, uint64(v))
return b, nil
}
func appendVarint32ValueNoZero(b []byte, ptr pointer, wiretag uint64, _ bool) ([]byte, error) {
v := *ptr.toUint32()
if v == 0 {
return b, nil
}
b = appendVarint(b, wiretag)
b = appendVarint(b, uint64(v))
return b, nil
}
func appendVarint32Ptr(b []byte, ptr pointer, wiretag uint64, _ bool) ([]byte, error) {
p := *ptr.toUint32Ptr()
if p == nil {
return b, nil
}
b = appendVarint(b, wiretag)
b = appendVarint(b, uint64(*p))
return b, nil
}
func appendVarint32Slice(b []byte, ptr pointer, wiretag uint64, _ bool) ([]byte, error) {
s := *ptr.toUint32Slice()
for _, v := range s {
b = appendVarint(b, wiretag)
b = appendVarint(b, uint64(v))
}
return b, nil
}
func appendVarint32PackedSlice(b []byte, ptr pointer, wiretag uint64, _ bool) ([]byte, error) {
s := *ptr.toUint32Slice()
if len(s) == 0 {
return b, nil
}
b = appendVarint(b, wiretag&^7|WireBytes)
// compute size
n := 0
for _, v := range s {
n += SizeVarint(uint64(v))
}
b = appendVarint(b, uint64(n))
for _, v := range s {
b = appendVarint(b, uint64(v))
}
return b, nil
}
func appendVarintS32Value(b []byte, ptr pointer, wiretag uint64, _ bool) ([]byte, error) {
v := *ptr.toInt32()
b = appendVarint(b, wiretag)
b = appendVarint(b, uint64(v))
return b, nil
}
func appendVarintS32ValueNoZero(b []byte, ptr pointer, wiretag uint64, _ bool) ([]byte, error) {
v := *ptr.toInt32()
if v == 0 {
return b, nil
}
b = appendVarint(b, wiretag)
b = appendVarint(b, uint64(v))
return b, nil
}
func appendVarintS32Ptr(b []byte, ptr pointer, wiretag uint64, _ bool) ([]byte, error) {
p := ptr.getInt32Ptr()
if p == nil {
return b, nil
}
b = appendVarint(b, wiretag)
b = appendVarint(b, uint64(*p))
return b, nil
}
func appendVarintS32Slice(b []byte, ptr pointer, wiretag uint64, _ bool) ([]byte, error) {
s := ptr.getInt32Slice()
for _, v := range s {
b = appendVarint(b, wiretag)
b = appendVarint(b, uint64(v))
}
return b, nil
}
func appendVarintS32PackedSlice(b []byte, ptr pointer, wiretag uint64, _ bool) ([]byte, error) {
s := ptr.getInt32Slice()
if len(s) == 0 {
return b, nil
}
b = appendVarint(b, wiretag&^7|WireBytes)
// compute size
n := 0
for _, v := range s {
n += SizeVarint(uint64(v))
}
b = appendVarint(b, uint64(n))
for _, v := range s {
b = appendVarint(b, uint64(v))
}
return b, nil
}
func appendVarint64Value(b []byte, ptr pointer, wiretag uint64, _ bool) ([]byte, error) {
v := *ptr.toUint64()
b = appendVarint(b, wiretag)
b = appendVarint(b, v)
return b, nil
}
func appendVarint64ValueNoZero(b []byte, ptr pointer, wiretag uint64, _ bool) ([]byte, error) {
v := *ptr.toUint64()
if v == 0 {
return b, nil
}
b = appendVarint(b, wiretag)
b = appendVarint(b, v)
return b, nil
}
func appendVarint64Ptr(b []byte, ptr pointer, wiretag uint64, _ bool) ([]byte, error) {
p := *ptr.toUint64Ptr()
if p == nil {
return b, nil
}
b = appendVarint(b, wiretag)
b = appendVarint(b, *p)
return b, nil
}
func appendVarint64Slice(b []byte, ptr pointer, wiretag uint64, _ bool) ([]byte, error) {
s := *ptr.toUint64Slice()
for _, v := range s {
b = appendVarint(b, wiretag)
b = appendVarint(b, v)
}
return b, nil
}
func appendVarint64PackedSlice(b []byte, ptr pointer, wiretag uint64, _ bool) ([]byte, error) {
s := *ptr.toUint64Slice()
if len(s) == 0 {
return b, nil
}
b = appendVarint(b, wiretag&^7|WireBytes)
// compute size
n := 0
for _, v := range s {
n += SizeVarint(v)
}
b = appendVarint(b, uint64(n))
for _, v := range s {
b = appendVarint(b, v)
}
return b, nil
}
func appendVarintS64Value(b []byte, ptr pointer, wiretag uint64, _ bool) ([]byte, error) {
v := *ptr.toInt64()
b = appendVarint(b, wiretag)
b = appendVarint(b, uint64(v))
return b, nil
}
func appendVarintS64ValueNoZero(b []byte, ptr pointer, wiretag uint64, _ bool) ([]byte, error) {
v := *ptr.toInt64()
if v == 0 {
return b, nil
}
b = appendVarint(b, wiretag)
b = appendVarint(b, uint64(v))
return b, nil
}
func appendVarintS64Ptr(b []byte, ptr pointer, wiretag uint64, _ bool) ([]byte, error) {
p := *ptr.toInt64Ptr()
if p == nil {
return b, nil
}
b = appendVarint(b, wiretag)
b = appendVarint(b, uint64(*p))
return b, nil
}
func appendVarintS64Slice(b []byte, ptr pointer, wiretag uint64, _ bool) ([]byte, error) {
s := *ptr.toInt64Slice()
for _, v := range s {
b = appendVarint(b, wiretag)
b = appendVarint(b, uint64(v))
}
return b, nil
}
func appendVarintS64PackedSlice(b []byte, ptr pointer, wiretag uint64, _ bool) ([]byte, error) {
s := *ptr.toInt64Slice()
if len(s) == 0 {
return b, nil
}
b = appendVarint(b, wiretag&^7|WireBytes)
// compute size
n := 0
for _, v := range s {
n += SizeVarint(uint64(v))
}
b = appendVarint(b, uint64(n))
for _, v := range s {
b = appendVarint(b, uint64(v))
}
return b, nil
}
func appendZigzag32Value(b []byte, ptr pointer, wiretag uint64, _ bool) ([]byte, error) {
v := *ptr.toInt32()
b = appendVarint(b, wiretag)
b = appendVarint(b, uint64((uint32(v)<<1)^uint32((int32(v)>>31))))
return b, nil
}
func appendZigzag32ValueNoZero(b []byte, ptr pointer, wiretag uint64, _ bool) ([]byte, error) {
v := *ptr.toInt32()
if v == 0 {
return b, nil
}
b = appendVarint(b, wiretag)
b = appendVarint(b, uint64((uint32(v)<<1)^uint32((int32(v)>>31))))
return b, nil
}
func appendZigzag32Ptr(b []byte, ptr pointer, wiretag uint64, _ bool) ([]byte, error) {
p := ptr.getInt32Ptr()
if p == nil {
return b, nil
}
b = appendVarint(b, wiretag)
v := *p
b = appendVarint(b, uint64((uint32(v)<<1)^uint32((int32(v)>>31))))
return b, nil
}
func appendZigzag32Slice(b []byte, ptr pointer, wiretag uint64, _ bool) ([]byte, error) {
s := ptr.getInt32Slice()
for _, v := range s {
b = appendVarint(b, wiretag)
b = appendVarint(b, uint64((uint32(v)<<1)^uint32((int32(v)>>31))))
}
return b, nil
}
func appendZigzag32PackedSlice(b []byte, ptr pointer, wiretag uint64, _ bool) ([]byte, error) {
s := ptr.getInt32Slice()
if len(s) == 0 {
return b, nil
}
b = appendVarint(b, wiretag&^7|WireBytes)
// compute size
n := 0
for _, v := range s {
n += SizeVarint(uint64((uint32(v) << 1) ^ uint32((int32(v) >> 31))))
}
b = appendVarint(b, uint64(n))
for _, v := range s {
b = appendVarint(b, uint64((uint32(v)<<1)^uint32((int32(v)>>31))))
}
return b, nil
}
func appendZigzag64Value(b []byte, ptr pointer, wiretag uint64, _ bool) ([]byte, error) {
v := *ptr.toInt64()
b = appendVarint(b, wiretag)
b = appendVarint(b, uint64(v<<1)^uint64((int64(v)>>63)))
return b, nil
}
func appendZigzag64ValueNoZero(b []byte, ptr pointer, wiretag uint64, _ bool) ([]byte, error) {
v := *ptr.toInt64()
if v == 0 {
return b, nil
}
b = appendVarint(b, wiretag)
b = appendVarint(b, uint64(v<<1)^uint64((int64(v)>>63)))
return b, nil
}
func appendZigzag64Ptr(b []byte, ptr pointer, wiretag uint64, _ bool) ([]byte, error) {
p := *ptr.toInt64Ptr()
if p == nil {
return b, nil
}
b = appendVarint(b, wiretag)
v := *p
b = appendVarint(b, uint64(v<<1)^uint64((int64(v)>>63)))
return b, nil
}
func appendZigzag64Slice(b []byte, ptr pointer, wiretag uint64, _ bool) ([]byte, error) {
s := *ptr.toInt64Slice()
for _, v := range s {
b = appendVarint(b, wiretag)
b = appendVarint(b, uint64(v<<1)^uint64((int64(v)>>63)))
}
return b, nil
}
func appendZigzag64PackedSlice(b []byte, ptr pointer, wiretag uint64, _ bool) ([]byte, error) {
s := *ptr.toInt64Slice()
if len(s) == 0 {
return b, nil
}
b = appendVarint(b, wiretag&^7|WireBytes)
// compute size
n := 0
for _, v := range s {
n += SizeVarint(uint64(v<<1) ^ uint64((int64(v) >> 63)))
}
b = appendVarint(b, uint64(n))
for _, v := range s {
b = appendVarint(b, uint64(v<<1)^uint64((int64(v)>>63)))
}
return b, nil
}
func appendBoolValue(b []byte, ptr pointer, wiretag uint64, _ bool) ([]byte, error) {
v := *ptr.toBool()
b = appendVarint(b, wiretag)
if v {
b = append(b, 1)
} else {
b = append(b, 0)
}
return b, nil
}
func appendBoolValueNoZero(b []byte, ptr pointer, wiretag uint64, _ bool) ([]byte, error) {
v := *ptr.toBool()
if !v {
return b, nil
}
b = appendVarint(b, wiretag)
b = append(b, 1)
return b, nil
}
func appendBoolPtr(b []byte, ptr pointer, wiretag uint64, _ bool) ([]byte, error) {
p := *ptr.toBoolPtr()
if p == nil {
return b, nil
}
b = appendVarint(b, wiretag)
if *p {
b = append(b, 1)
} else {
b = append(b, 0)
}
return b, nil
}
func appendBoolSlice(b []byte, ptr pointer, wiretag uint64, _ bool) ([]byte, error) {
s := *ptr.toBoolSlice()
for _, v := range s {
b = appendVarint(b, wiretag)
if v {
b = append(b, 1)
} else {
b = append(b, 0)
}
}
return b, nil
}
func appendBoolPackedSlice(b []byte, ptr pointer, wiretag uint64, _ bool) ([]byte, error) {
s := *ptr.toBoolSlice()
if len(s) == 0 {
return b, nil
}
b = appendVarint(b, wiretag&^7|WireBytes)
b = appendVarint(b, uint64(len(s)))
for _, v := range s {
if v {
b = append(b, 1)
} else {
b = append(b, 0)
}
}
return b, nil
}
func appendStringValue(b []byte, ptr pointer, wiretag uint64, _ bool) ([]byte, error) {
v := *ptr.toString()
if !utf8.ValidString(v) {
return nil, errInvalidUTF8
}
b = appendVarint(b, wiretag)
b = appendVarint(b, uint64(len(v)))
b = append(b, v...)
return b, nil
}
func appendStringValueNoZero(b []byte, ptr pointer, wiretag uint64, _ bool) ([]byte, error) {
v := *ptr.toString()
if v == "" {
return b, nil
}
if !utf8.ValidString(v) {
return nil, errInvalidUTF8
}
b = appendVarint(b, wiretag)
b = appendVarint(b, uint64(len(v)))
b = append(b, v...)
return b, nil
}
func appendStringPtr(b []byte, ptr pointer, wiretag uint64, _ bool) ([]byte, error) {
p := *ptr.toStringPtr()
if p == nil {
return b, nil
}
v := *p
if !utf8.ValidString(v) {
return nil, errInvalidUTF8
}
b = appendVarint(b, wiretag)
b = appendVarint(b, uint64(len(v)))
b = append(b, v...)
return b, nil
}
func appendStringSlice(b []byte, ptr pointer, wiretag uint64, _ bool) ([]byte, error) {
s := *ptr.toStringSlice()
for _, v := range s {
if !utf8.ValidString(v) {
return nil, errInvalidUTF8
}
b = appendVarint(b, wiretag)
b = appendVarint(b, uint64(len(v)))
b = append(b, v...)
}
return b, nil
}
func appendBytes(b []byte, ptr pointer, wiretag uint64, _ bool) ([]byte, error) {
v := *ptr.toBytes()
if v == nil {
return b, nil
}
b = appendVarint(b, wiretag)
b = appendVarint(b, uint64(len(v)))
b = append(b, v...)
return b, nil
}
func appendBytes3(b []byte, ptr pointer, wiretag uint64, _ bool) ([]byte, error) {
v := *ptr.toBytes()
if len(v) == 0 {
return b, nil
}
b = appendVarint(b, wiretag)
b = appendVarint(b, uint64(len(v)))
b = append(b, v...)
return b, nil
}
func appendBytesOneof(b []byte, ptr pointer, wiretag uint64, _ bool) ([]byte, error) {
v := *ptr.toBytes()
b = appendVarint(b, wiretag)
b = appendVarint(b, uint64(len(v)))
b = append(b, v...)
return b, nil
}
func appendBytesSlice(b []byte, ptr pointer, wiretag uint64, _ bool) ([]byte, error) {
s := *ptr.toBytesSlice()
for _, v := range s {
b = appendVarint(b, wiretag)
b = appendVarint(b, uint64(len(v)))
b = append(b, v...)
}
return b, nil
}
// makeGroupMarshaler returns the sizer and marshaler for a group.
// u is the marshal info of the underlying message.
func makeGroupMarshaler(u *marshalInfo) (sizer, marshaler) {
return func(ptr pointer, tagsize int) int {
p := ptr.getPointer()
if p.isNil() {
return 0
}
return u.size(p) + 2*tagsize
},
func(b []byte, ptr pointer, wiretag uint64, deterministic bool) ([]byte, error) {
p := ptr.getPointer()
if p.isNil() {
return b, nil
}
var err error
b = appendVarint(b, wiretag) // start group
b, err = u.marshal(b, p, deterministic)
b = appendVarint(b, wiretag+(WireEndGroup-WireStartGroup)) // end group
return b, err
}
}
// makeGroupSliceMarshaler returns the sizer and marshaler for a group slice.
// u is the marshal info of the underlying message.
func makeGroupSliceMarshaler(u *marshalInfo) (sizer, marshaler) {
return func(ptr pointer, tagsize int) int {
s := ptr.getPointerSlice()
n := 0
for _, v := range s {
if v.isNil() {
continue
}
n += u.size(v) + 2*tagsize
}
return n
},
func(b []byte, ptr pointer, wiretag uint64, deterministic bool) ([]byte, error) {
s := ptr.getPointerSlice()
var err, errreq error
for _, v := range s {
if v.isNil() {
return b, errRepeatedHasNil
}
b = appendVarint(b, wiretag) // start group
b, err = u.marshal(b, v, deterministic)
b = appendVarint(b, wiretag+(WireEndGroup-WireStartGroup)) // end group
if err != nil {
if _, ok := err.(*RequiredNotSetError); ok {
// Required field in submessage is not set.
// We record the error but keep going, to give a complete marshaling.
if errreq == nil {
errreq = err
}
continue
}
if err == ErrNil {
err = errRepeatedHasNil
}
return b, err
}
}
return b, errreq
}
}
// makeMessageMarshaler returns the sizer and marshaler for a message field.
// u is the marshal info of the message.
func makeMessageMarshaler(u *marshalInfo) (sizer, marshaler) {
return func(ptr pointer, tagsize int) int {
p := ptr.getPointer()
if p.isNil() {
return 0
}
siz := u.size(p)
return siz + SizeVarint(uint64(siz)) + tagsize
},
func(b []byte, ptr pointer, wiretag uint64, deterministic bool) ([]byte, error) {
p := ptr.getPointer()
if p.isNil() {
return b, nil
}
b = appendVarint(b, wiretag)
siz := u.cachedsize(p)
b = appendVarint(b, uint64(siz))
return u.marshal(b, p, deterministic)
}
}
// makeMessageSliceMarshaler returns the sizer and marshaler for a message slice.
// u is the marshal info of the message.
func makeMessageSliceMarshaler(u *marshalInfo) (sizer, marshaler) {
return func(ptr pointer, tagsize int) int {
s := ptr.getPointerSlice()
n := 0
for _, v := range s {
if v.isNil() {
continue
}
siz := u.size(v)
n += siz + SizeVarint(uint64(siz)) + tagsize
}
return n
},
func(b []byte, ptr pointer, wiretag uint64, deterministic bool) ([]byte, error) {
s := ptr.getPointerSlice()
var err, errreq error
for _, v := range s {
if v.isNil() {
return b, errRepeatedHasNil
}
b = appendVarint(b, wiretag)
siz := u.cachedsize(v)
b = appendVarint(b, uint64(siz))
b, err = u.marshal(b, v, deterministic)
if err != nil {
if _, ok := err.(*RequiredNotSetError); ok {
// Required field in submessage is not set.
// We record the error but keep going, to give a complete marshaling.
if errreq == nil {
errreq = err
}
continue
}
if err == ErrNil {
err = errRepeatedHasNil
}
return b, err
}
}
return b, errreq
}
}
// makeMapMarshaler returns the sizer and marshaler for a map field.
// f is the pointer to the reflect data structure of the field.
func makeMapMarshaler(f *reflect.StructField) (sizer, marshaler) {
// figure out key and value type
t := f.Type
keyType := t.Key()
valType := t.Elem()
tags := strings.Split(f.Tag.Get("protobuf"), ",")
keyTags := strings.Split(f.Tag.Get("protobuf_key"), ",")
valTags := strings.Split(f.Tag.Get("protobuf_val"), ",")
for _, t := range tags {
if strings.HasPrefix(t, "customtype=") {
valTags = append(valTags, t)
}
if t == "stdtime" {
valTags = append(valTags, t)
}
if t == "stdduration" {
valTags = append(valTags, t)
}
}
keySizer, keyMarshaler := typeMarshaler(keyType, keyTags, false, false) // don't omit zero value in map
valSizer, valMarshaler := typeMarshaler(valType, valTags, false, false) // don't omit zero value in map
keyWireTag := 1<<3 | wiretype(keyTags[0])
valWireTag := 2<<3 | wiretype(valTags[0])
// We create an interface to get the addresses of the map key and value.
// If value is pointer-typed, the interface is a direct interface, the
// idata itself is the value. Otherwise, the idata is the pointer to the
// value.
// Key cannot be pointer-typed.
valIsPtr := valType.Kind() == reflect.Ptr
return func(ptr pointer, tagsize int) int {
m := ptr.asPointerTo(t).Elem() // the map
n := 0
for _, k := range m.MapKeys() {
ki := k.Interface()
vi := m.MapIndex(k).Interface()
kaddr := toAddrPointer(&ki, false) // pointer to key
vaddr := toAddrPointer(&vi, valIsPtr) // pointer to value
siz := keySizer(kaddr, 1) + valSizer(vaddr, 1) // tag of key = 1 (size=1), tag of val = 2 (size=1)
n += siz + SizeVarint(uint64(siz)) + tagsize
}
return n
},
func(b []byte, ptr pointer, tag uint64, deterministic bool) ([]byte, error) {
m := ptr.asPointerTo(t).Elem() // the map
var err error
keys := m.MapKeys()
if len(keys) > 1 && deterministic {
sort.Sort(mapKeys(keys))
}
for _, k := range keys {
ki := k.Interface()
vi := m.MapIndex(k).Interface()
kaddr := toAddrPointer(&ki, false) // pointer to key
vaddr := toAddrPointer(&vi, valIsPtr) // pointer to value
b = appendVarint(b, tag)
siz := keySizer(kaddr, 1) + valSizer(vaddr, 1) // tag of key = 1 (size=1), tag of val = 2 (size=1)
b = appendVarint(b, uint64(siz))
b, err = keyMarshaler(b, kaddr, keyWireTag, deterministic)
if err != nil {
return b, err
}
b, err = valMarshaler(b, vaddr, valWireTag, deterministic)
if err != nil && err != ErrNil { // allow nil value in map
return b, err
}
}
return b, nil
}
}
// makeOneOfMarshaler returns the sizer and marshaler for a oneof field.
// fi is the marshal info of the field.
// f is the pointer to the reflect data structure of the field.
func makeOneOfMarshaler(fi *marshalFieldInfo, f *reflect.StructField) (sizer, marshaler) {
// Oneof field is an interface. We need to get the actual data type on the fly.
t := f.Type
return func(ptr pointer, _ int) int {
p := ptr.getInterfacePointer()
if p.isNil() {
return 0
}
v := ptr.asPointerTo(t).Elem().Elem().Elem() // *interface -> interface -> *struct -> struct
telem := v.Type()
e := fi.oneofElems[telem]
return e.sizer(p, e.tagsize)
},
func(b []byte, ptr pointer, _ uint64, deterministic bool) ([]byte, error) {
p := ptr.getInterfacePointer()
if p.isNil() {
return b, nil
}
v := ptr.asPointerTo(t).Elem().Elem().Elem() // *interface -> interface -> *struct -> struct
telem := v.Type()
if telem.Field(0).Type.Kind() == reflect.Ptr && p.getPointer().isNil() {
return b, errOneofHasNil
}
e := fi.oneofElems[telem]
return e.marshaler(b, p, e.wiretag, deterministic)
}
}
// sizeExtensions computes the size of encoded data for a XXX_InternalExtensions field.
func (u *marshalInfo) sizeExtensions(ext *XXX_InternalExtensions) int {
m, mu := ext.extensionsRead()
if m == nil {
return 0
}
mu.Lock()
n := 0
for _, e := range m {
if e.value == nil || e.desc == nil {
// Extension is only in its encoded form.
n += len(e.enc)
continue
}
// We don't skip extensions that have an encoded form set,
// because the extension value may have been mutated after
// the last time this function was called.
ei := u.getExtElemInfo(e.desc)
v := e.value
p := toAddrPointer(&v, ei.isptr)
n += ei.sizer(p, ei.tagsize)
}
mu.Unlock()
return n
}
// appendExtensions marshals a XXX_InternalExtensions field to the end of byte slice b.
func (u *marshalInfo) appendExtensions(b []byte, ext *XXX_InternalExtensions, deterministic bool) ([]byte, error) {
m, mu := ext.extensionsRead()
if m == nil {
return b, nil
}
mu.Lock()
defer mu.Unlock()
var err error
// Fast-path for common cases: zero or one extensions.
// Don't bother sorting the keys.
if len(m) <= 1 {
for _, e := range m {
if e.value == nil || e.desc == nil {
// Extension is only in its encoded form.
b = append(b, e.enc...)
continue
}
// We don't skip extensions that have an encoded form set,
// because the extension value may have been mutated after
// the last time this function was called.
ei := u.getExtElemInfo(e.desc)
v := e.value
p := toAddrPointer(&v, ei.isptr)
b, err = ei.marshaler(b, p, ei.wiretag, deterministic)
if err != nil {
return b, err
}
}
return b, nil
}
// Sort the keys to provide a deterministic encoding.
// Not sure this is required, but the old code does it.
keys := make([]int, 0, len(m))
for k := range m {
keys = append(keys, int(k))
}
sort.Ints(keys)
for _, k := range keys {
e := m[int32(k)]
if e.value == nil || e.desc == nil {
// Extension is only in its encoded form.
b = append(b, e.enc...)
continue
}
// We don't skip extensions that have an encoded form set,
// because the extension value may have been mutated after
// the last time this function was called.
ei := u.getExtElemInfo(e.desc)
v := e.value
p := toAddrPointer(&v, ei.isptr)
b, err = ei.marshaler(b, p, ei.wiretag, deterministic)
if err != nil {
return b, err
}
}
return b, nil
}
// message set format is:
// message MessageSet {
// repeated group Item = 1 {
// required int32 type_id = 2;
// required string message = 3;
// };
// }
// sizeMessageSet computes the size of encoded data for a XXX_InternalExtensions field
// in message set format (above).
func (u *marshalInfo) sizeMessageSet(ext *XXX_InternalExtensions) int {
m, mu := ext.extensionsRead()
if m == nil {
return 0
}
mu.Lock()
n := 0
for id, e := range m {
n += 2 // start group, end group. tag = 1 (size=1)
n += SizeVarint(uint64(id)) + 1 // type_id, tag = 2 (size=1)
if e.value == nil || e.desc == nil {
// Extension is only in its encoded form.
msgWithLen := skipVarint(e.enc) // skip old tag, but leave the length varint
siz := len(msgWithLen)
n += siz + 1 // message, tag = 3 (size=1)
continue
}
// We don't skip extensions that have an encoded form set,
// because the extension value may have been mutated after
// the last time this function was called.
ei := u.getExtElemInfo(e.desc)
v := e.value
p := toAddrPointer(&v, ei.isptr)
n += ei.sizer(p, 1) // message, tag = 3 (size=1)
}
mu.Unlock()
return n
}
// appendMessageSet marshals a XXX_InternalExtensions field in message set format (above)
// to the end of byte slice b.
func (u *marshalInfo) appendMessageSet(b []byte, ext *XXX_InternalExtensions, deterministic bool) ([]byte, error) {
m, mu := ext.extensionsRead()
if m == nil {
return b, nil
}
mu.Lock()
defer mu.Unlock()
var err error
// Fast-path for common cases: zero or one extensions.
// Don't bother sorting the keys.
if len(m) <= 1 {
for id, e := range m {
b = append(b, 1<<3|WireStartGroup)
b = append(b, 2<<3|WireVarint)
b = appendVarint(b, uint64(id))
if e.value == nil || e.desc == nil {
// Extension is only in its encoded form.
msgWithLen := skipVarint(e.enc) // skip old tag, but leave the length varint
b = append(b, 3<<3|WireBytes)
b = append(b, msgWithLen...)
b = append(b, 1<<3|WireEndGroup)
continue
}
// We don't skip extensions that have an encoded form set,
// because the extension value may have been mutated after
// the last time this function was called.
ei := u.getExtElemInfo(e.desc)
v := e.value
p := toAddrPointer(&v, ei.isptr)
b, err = ei.marshaler(b, p, 3<<3|WireBytes, deterministic)
if err != nil {
return b, err
}
b = append(b, 1<<3|WireEndGroup)
}
return b, nil
}
// Sort the keys to provide a deterministic encoding.
keys := make([]int, 0, len(m))
for k := range m {
keys = append(keys, int(k))
}
sort.Ints(keys)
for _, id := range keys {
e := m[int32(id)]
b = append(b, 1<<3|WireStartGroup)
b = append(b, 2<<3|WireVarint)
b = appendVarint(b, uint64(id))
if e.value == nil || e.desc == nil {
// Extension is only in its encoded form.
msgWithLen := skipVarint(e.enc) // skip old tag, but leave the length varint
b = append(b, 3<<3|WireBytes)
b = append(b, msgWithLen...)
b = append(b, 1<<3|WireEndGroup)
continue
}
// We don't skip extensions that have an encoded form set,
// because the extension value may have been mutated after
// the last time this function was called.
ei := u.getExtElemInfo(e.desc)
v := e.value
p := toAddrPointer(&v, ei.isptr)
b, err = ei.marshaler(b, p, 3<<3|WireBytes, deterministic)
b = append(b, 1<<3|WireEndGroup)
if err != nil {
return b, err
}
}
return b, nil
}
// sizeV1Extensions computes the size of encoded data for a V1-API extension field.
func (u *marshalInfo) sizeV1Extensions(m map[int32]Extension) int {
if m == nil {
return 0
}
n := 0
for _, e := range m {
if e.value == nil || e.desc == nil {
// Extension is only in its encoded form.
n += len(e.enc)
continue
}
// We don't skip extensions that have an encoded form set,
// because the extension value may have been mutated after
// the last time this function was called.
ei := u.getExtElemInfo(e.desc)
v := e.value
p := toAddrPointer(&v, ei.isptr)
n += ei.sizer(p, ei.tagsize)
}
return n
}
// appendV1Extensions marshals a V1-API extension field to the end of byte slice b.
func (u *marshalInfo) appendV1Extensions(b []byte, m map[int32]Extension, deterministic bool) ([]byte, error) {
if m == nil {
return b, nil
}
// Sort the keys to provide a deterministic encoding.
keys := make([]int, 0, len(m))
for k := range m {
keys = append(keys, int(k))
}
sort.Ints(keys)
var err error
for _, k := range keys {
e := m[int32(k)]
if e.value == nil || e.desc == nil {
// Extension is only in its encoded form.
b = append(b, e.enc...)
continue
}
// We don't skip extensions that have an encoded form set,
// because the extension value may have been mutated after
// the last time this function was called.
ei := u.getExtElemInfo(e.desc)
v := e.value
p := toAddrPointer(&v, ei.isptr)
b, err = ei.marshaler(b, p, ei.wiretag, deterministic)
if err != nil {
return b, err
}
}
return b, nil
}
// newMarshaler is the interface representing objects that can marshal themselves.
//
// This exists to support protoc-gen-go generated messages.
// The proto package will stop type-asserting to this interface in the future.
//
// DO NOT DEPEND ON THIS.
type newMarshaler interface {
XXX_Size() int
XXX_Marshal(b []byte, deterministic bool) ([]byte, error)
}
// Size returns the encoded size of a protocol buffer message.
// This is the main entry point.
func Size(pb Message) int {
if m, ok := pb.(newMarshaler); ok {
return m.XXX_Size()
}
if m, ok := pb.(Marshaler); ok {
// If the message can marshal itself, let it do it, for compatibility.
// NOTE: This is not efficient.
b, _ := m.Marshal()
return len(b)
}
// in case somehow we didn't generate the wrapper
if pb == nil {
return 0
}
var info InternalMessageInfo
return info.Size(pb)
}
// Marshal takes a protocol buffer message
// and encodes it into the wire format, returning the data.
// This is the main entry point.
func Marshal(pb Message) ([]byte, error) {
if m, ok := pb.(newMarshaler); ok {
siz := m.XXX_Size()
b := make([]byte, 0, siz)
return m.XXX_Marshal(b, false)
}
if m, ok := pb.(Marshaler); ok {
// If the message can marshal itself, let it do it, for compatibility.
// NOTE: This is not efficient.
return m.Marshal()
}
// in case somehow we didn't generate the wrapper
if pb == nil {
return nil, ErrNil
}
var info InternalMessageInfo
siz := info.Size(pb)
b := make([]byte, 0, siz)
return info.Marshal(b, pb, false)
}
// Marshal takes a protocol buffer message
// and encodes it into the wire format, writing the result to the
// Buffer.
// This is an alternative entry point. It is not necessary to use
// a Buffer for most applications.
func (p *Buffer) Marshal(pb Message) error {
var err error
if m, ok := pb.(newMarshaler); ok {
siz := m.XXX_Size()
p.grow(siz) // make sure buf has enough capacity
p.buf, err = m.XXX_Marshal(p.buf, p.deterministic)
return err
}
if m, ok := pb.(Marshaler); ok {
// If the message can marshal itself, let it do it, for compatibility.
// NOTE: This is not efficient.
var b []byte
b, err = m.Marshal()
p.buf = append(p.buf, b...)
return err
}
// in case somehow we didn't generate the wrapper
if pb == nil {
return ErrNil
}
var info InternalMessageInfo
siz := info.Size(pb)
p.grow(siz) // make sure buf has enough capacity
p.buf, err = info.Marshal(p.buf, pb, p.deterministic)
return err
}
// grow grows the buffer's capacity, if necessary, to guarantee space for
// another n bytes. After grow(n), at least n bytes can be written to the
// buffer without another allocation.
func (p *Buffer) grow(n int) {
need := len(p.buf) + n
if need <= cap(p.buf) {
return
}
newCap := len(p.buf) * 2
if newCap < need {
newCap = need
}
p.buf = append(make([]byte, 0, newCap), p.buf...)
}
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