2052 lines
49 KiB
Go
2052 lines
49 KiB
Go
// 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"
|
|
"io"
|
|
"math"
|
|
"reflect"
|
|
"strconv"
|
|
"strings"
|
|
"sync"
|
|
"sync/atomic"
|
|
"unicode/utf8"
|
|
)
|
|
|
|
// Unmarshal is the entry point from the generated .pb.go files.
|
|
// This function is not intended to be used by non-generated code.
|
|
// This function is not subject to any compatibility guarantee.
|
|
// msg contains a pointer to a protocol buffer struct.
|
|
// b is the data to be unmarshaled into the protocol buffer.
|
|
// a is a pointer to a place to store cached unmarshal information.
|
|
func (a *InternalMessageInfo) Unmarshal(msg Message, b []byte) error {
|
|
// Load the unmarshal information for this message type.
|
|
// The atomic load ensures memory consistency.
|
|
u := atomicLoadUnmarshalInfo(&a.unmarshal)
|
|
if u == nil {
|
|
// Slow path: find unmarshal info for msg, update a with it.
|
|
u = getUnmarshalInfo(reflect.TypeOf(msg).Elem())
|
|
atomicStoreUnmarshalInfo(&a.unmarshal, u)
|
|
}
|
|
// Then do the unmarshaling.
|
|
err := u.unmarshal(toPointer(&msg), b)
|
|
return err
|
|
}
|
|
|
|
type unmarshalInfo struct {
|
|
typ reflect.Type // type of the protobuf struct
|
|
|
|
// 0 = only typ field is initialized
|
|
// 1 = completely initialized
|
|
initialized int32
|
|
lock sync.Mutex // prevents double initialization
|
|
dense []unmarshalFieldInfo // fields indexed by tag #
|
|
sparse map[uint64]unmarshalFieldInfo // fields indexed by tag #
|
|
reqFields []string // names of required fields
|
|
reqMask uint64 // 1<<len(reqFields)-1
|
|
unrecognized field // offset of []byte to put unrecognized data (or invalidField if we should throw it away)
|
|
extensions field // offset of extensions field (of type proto.XXX_InternalExtensions), or invalidField if it does not exist
|
|
oldExtensions field // offset of old-form extensions field (of type map[int]Extension)
|
|
extensionRanges []ExtensionRange // if non-nil, implies extensions field is valid
|
|
isMessageSet bool // if true, implies extensions field is valid
|
|
}
|
|
|
|
// An unmarshaler takes a stream of bytes and a pointer to a field of a message.
|
|
// It decodes the field, stores it at f, and returns the unused bytes.
|
|
// w is the wire encoding.
|
|
// b is the data after the tag and wire encoding have been read.
|
|
type unmarshaler func(b []byte, f pointer, w int) ([]byte, error)
|
|
|
|
type unmarshalFieldInfo struct {
|
|
// location of the field in the proto message structure.
|
|
field field
|
|
|
|
// function to unmarshal the data for the field.
|
|
unmarshal unmarshaler
|
|
|
|
// if a required field, contains a single set bit at this field's index in the required field list.
|
|
reqMask uint64
|
|
|
|
name string // name of the field, for error reporting
|
|
}
|
|
|
|
var (
|
|
unmarshalInfoMap = map[reflect.Type]*unmarshalInfo{}
|
|
unmarshalInfoLock sync.Mutex
|
|
)
|
|
|
|
// getUnmarshalInfo returns the data structure which can be
|
|
// subsequently used to unmarshal a message of the given type.
|
|
// t is the type of the message (note: not pointer to message).
|
|
func getUnmarshalInfo(t reflect.Type) *unmarshalInfo {
|
|
// It would be correct to return a new unmarshalInfo
|
|
// unconditionally. We would end up allocating one
|
|
// per occurrence of that type as a message or submessage.
|
|
// We use a cache here just to reduce memory usage.
|
|
unmarshalInfoLock.Lock()
|
|
defer unmarshalInfoLock.Unlock()
|
|
u := unmarshalInfoMap[t]
|
|
if u == nil {
|
|
u = &unmarshalInfo{typ: t}
|
|
// Note: we just set the type here. The rest of the fields
|
|
// will be initialized on first use.
|
|
unmarshalInfoMap[t] = u
|
|
}
|
|
return u
|
|
}
|
|
|
|
// unmarshal does the main work of unmarshaling a message.
|
|
// u provides type information used to unmarshal the message.
|
|
// m is a pointer to a protocol buffer message.
|
|
// b is a byte stream to unmarshal into m.
|
|
// This is top routine used when recursively unmarshaling submessages.
|
|
func (u *unmarshalInfo) unmarshal(m pointer, b []byte) error {
|
|
if atomic.LoadInt32(&u.initialized) == 0 {
|
|
u.computeUnmarshalInfo()
|
|
}
|
|
if u.isMessageSet {
|
|
return UnmarshalMessageSet(b, m.offset(u.extensions).toExtensions())
|
|
}
|
|
var reqMask uint64 // bitmask of required fields we've seen.
|
|
var errLater error
|
|
for len(b) > 0 {
|
|
// Read tag and wire type.
|
|
// Special case 1 and 2 byte varints.
|
|
var x uint64
|
|
if b[0] < 128 {
|
|
x = uint64(b[0])
|
|
b = b[1:]
|
|
} else if len(b) >= 2 && b[1] < 128 {
|
|
x = uint64(b[0]&0x7f) + uint64(b[1])<<7
|
|
b = b[2:]
|
|
} else {
|
|
var n int
|
|
x, n = decodeVarint(b)
|
|
if n == 0 {
|
|
return io.ErrUnexpectedEOF
|
|
}
|
|
b = b[n:]
|
|
}
|
|
tag := x >> 3
|
|
wire := int(x) & 7
|
|
|
|
// Dispatch on the tag to one of the unmarshal* functions below.
|
|
var f unmarshalFieldInfo
|
|
if tag < uint64(len(u.dense)) {
|
|
f = u.dense[tag]
|
|
} else {
|
|
f = u.sparse[tag]
|
|
}
|
|
if fn := f.unmarshal; fn != nil {
|
|
var err error
|
|
b, err = fn(b, m.offset(f.field), wire)
|
|
if err == nil {
|
|
reqMask |= f.reqMask
|
|
continue
|
|
}
|
|
if r, ok := err.(*RequiredNotSetError); ok {
|
|
// Remember this error, but keep parsing. We need to produce
|
|
// a full parse even if a required field is missing.
|
|
if errLater == nil {
|
|
errLater = r
|
|
}
|
|
reqMask |= f.reqMask
|
|
continue
|
|
}
|
|
if err != errInternalBadWireType {
|
|
if err == errInvalidUTF8 {
|
|
if errLater == nil {
|
|
fullName := revProtoTypes[reflect.PtrTo(u.typ)] + "." + f.name
|
|
errLater = &invalidUTF8Error{fullName}
|
|
}
|
|
continue
|
|
}
|
|
return err
|
|
}
|
|
// Fragments with bad wire type are treated as unknown fields.
|
|
}
|
|
|
|
// Unknown tag.
|
|
if !u.unrecognized.IsValid() {
|
|
// Don't keep unrecognized data; just skip it.
|
|
var err error
|
|
b, err = skipField(b, wire)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
continue
|
|
}
|
|
// Keep unrecognized data around.
|
|
// maybe in extensions, maybe in the unrecognized field.
|
|
z := m.offset(u.unrecognized).toBytes()
|
|
var emap map[int32]Extension
|
|
var e Extension
|
|
for _, r := range u.extensionRanges {
|
|
if uint64(r.Start) <= tag && tag <= uint64(r.End) {
|
|
if u.extensions.IsValid() {
|
|
mp := m.offset(u.extensions).toExtensions()
|
|
emap = mp.extensionsWrite()
|
|
e = emap[int32(tag)]
|
|
z = &e.enc
|
|
break
|
|
}
|
|
if u.oldExtensions.IsValid() {
|
|
p := m.offset(u.oldExtensions).toOldExtensions()
|
|
emap = *p
|
|
if emap == nil {
|
|
emap = map[int32]Extension{}
|
|
*p = emap
|
|
}
|
|
e = emap[int32(tag)]
|
|
z = &e.enc
|
|
break
|
|
}
|
|
panic("no extensions field available")
|
|
}
|
|
}
|
|
|
|
// Use wire type to skip data.
|
|
var err error
|
|
b0 := b
|
|
b, err = skipField(b, wire)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
*z = encodeVarint(*z, tag<<3|uint64(wire))
|
|
*z = append(*z, b0[:len(b0)-len(b)]...)
|
|
|
|
if emap != nil {
|
|
emap[int32(tag)] = e
|
|
}
|
|
}
|
|
if reqMask != u.reqMask && errLater == nil {
|
|
// A required field of this message is missing.
|
|
for _, n := range u.reqFields {
|
|
if reqMask&1 == 0 {
|
|
errLater = &RequiredNotSetError{n}
|
|
}
|
|
reqMask >>= 1
|
|
}
|
|
}
|
|
return errLater
|
|
}
|
|
|
|
// computeUnmarshalInfo fills in u with information for use
|
|
// in unmarshaling protocol buffers of type u.typ.
|
|
func (u *unmarshalInfo) computeUnmarshalInfo() {
|
|
u.lock.Lock()
|
|
defer u.lock.Unlock()
|
|
if u.initialized != 0 {
|
|
return
|
|
}
|
|
t := u.typ
|
|
n := t.NumField()
|
|
|
|
// Set up the "not found" value for the unrecognized byte buffer.
|
|
// This is the default for proto3.
|
|
u.unrecognized = invalidField
|
|
u.extensions = invalidField
|
|
u.oldExtensions = invalidField
|
|
|
|
// List of the generated type and offset for each oneof field.
|
|
type oneofField struct {
|
|
ityp reflect.Type // interface type of oneof field
|
|
field field // offset in containing message
|
|
}
|
|
var oneofFields []oneofField
|
|
|
|
for i := 0; i < n; i++ {
|
|
f := t.Field(i)
|
|
if f.Name == "XXX_unrecognized" {
|
|
// The byte slice used to hold unrecognized input is special.
|
|
if f.Type != reflect.TypeOf(([]byte)(nil)) {
|
|
panic("bad type for XXX_unrecognized field: " + f.Type.Name())
|
|
}
|
|
u.unrecognized = toField(&f)
|
|
continue
|
|
}
|
|
if f.Name == "XXX_InternalExtensions" {
|
|
// Ditto here.
|
|
if f.Type != reflect.TypeOf(XXX_InternalExtensions{}) {
|
|
panic("bad type for XXX_InternalExtensions field: " + f.Type.Name())
|
|
}
|
|
u.extensions = toField(&f)
|
|
if f.Tag.Get("protobuf_messageset") == "1" {
|
|
u.isMessageSet = true
|
|
}
|
|
continue
|
|
}
|
|
if f.Name == "XXX_extensions" {
|
|
// An older form of the extensions field.
|
|
if f.Type != reflect.TypeOf((map[int32]Extension)(nil)) {
|
|
panic("bad type for XXX_extensions field: " + f.Type.Name())
|
|
}
|
|
u.oldExtensions = toField(&f)
|
|
continue
|
|
}
|
|
if f.Name == "XXX_NoUnkeyedLiteral" || f.Name == "XXX_sizecache" {
|
|
continue
|
|
}
|
|
|
|
oneof := f.Tag.Get("protobuf_oneof")
|
|
if oneof != "" {
|
|
oneofFields = append(oneofFields, oneofField{f.Type, toField(&f)})
|
|
// The rest of oneof processing happens below.
|
|
continue
|
|
}
|
|
|
|
tags := f.Tag.Get("protobuf")
|
|
tagArray := strings.Split(tags, ",")
|
|
if len(tagArray) < 2 {
|
|
panic("protobuf tag not enough fields in " + t.Name() + "." + f.Name + ": " + tags)
|
|
}
|
|
tag, err := strconv.Atoi(tagArray[1])
|
|
if err != nil {
|
|
panic("protobuf tag field not an integer: " + tagArray[1])
|
|
}
|
|
|
|
name := ""
|
|
for _, tag := range tagArray[3:] {
|
|
if strings.HasPrefix(tag, "name=") {
|
|
name = tag[5:]
|
|
}
|
|
}
|
|
|
|
// Extract unmarshaling function from the field (its type and tags).
|
|
unmarshal := fieldUnmarshaler(&f)
|
|
|
|
// Required field?
|
|
var reqMask uint64
|
|
if tagArray[2] == "req" {
|
|
bit := len(u.reqFields)
|
|
u.reqFields = append(u.reqFields, name)
|
|
reqMask = uint64(1) << uint(bit)
|
|
// TODO: if we have more than 64 required fields, we end up
|
|
// not verifying that all required fields are present.
|
|
// Fix this, perhaps using a count of required fields?
|
|
}
|
|
|
|
// Store the info in the correct slot in the message.
|
|
u.setTag(tag, toField(&f), unmarshal, reqMask, name)
|
|
}
|
|
|
|
// Find any types associated with oneof fields.
|
|
// TODO: XXX_OneofFuncs returns more info than we need. Get rid of some of it?
|
|
fn := reflect.Zero(reflect.PtrTo(t)).MethodByName("XXX_OneofFuncs")
|
|
if fn.IsValid() {
|
|
res := fn.Call(nil)[3] // last return value from XXX_OneofFuncs: []interface{}
|
|
for i := res.Len() - 1; i >= 0; i-- {
|
|
v := res.Index(i) // interface{}
|
|
tptr := reflect.ValueOf(v.Interface()).Type() // *Msg_X
|
|
typ := tptr.Elem() // Msg_X
|
|
|
|
f := typ.Field(0) // oneof implementers have one field
|
|
baseUnmarshal := fieldUnmarshaler(&f)
|
|
tags := strings.Split(f.Tag.Get("protobuf"), ",")
|
|
fieldNum, err := strconv.Atoi(tags[1])
|
|
if err != nil {
|
|
panic("protobuf tag field not an integer: " + tags[1])
|
|
}
|
|
var name string
|
|
for _, tag := range tags {
|
|
if strings.HasPrefix(tag, "name=") {
|
|
name = strings.TrimPrefix(tag, "name=")
|
|
break
|
|
}
|
|
}
|
|
|
|
// Find the oneof field that this struct implements.
|
|
// Might take O(n^2) to process all of the oneofs, but who cares.
|
|
for _, of := range oneofFields {
|
|
if tptr.Implements(of.ityp) {
|
|
// We have found the corresponding interface for this struct.
|
|
// That lets us know where this struct should be stored
|
|
// when we encounter it during unmarshaling.
|
|
unmarshal := makeUnmarshalOneof(typ, of.ityp, baseUnmarshal)
|
|
u.setTag(fieldNum, of.field, unmarshal, 0, name)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// Get extension ranges, if any.
|
|
fn = reflect.Zero(reflect.PtrTo(t)).MethodByName("ExtensionRangeArray")
|
|
if fn.IsValid() {
|
|
if !u.extensions.IsValid() && !u.oldExtensions.IsValid() {
|
|
panic("a message with extensions, but no extensions field in " + t.Name())
|
|
}
|
|
u.extensionRanges = fn.Call(nil)[0].Interface().([]ExtensionRange)
|
|
}
|
|
|
|
// Explicitly disallow tag 0. This will ensure we flag an error
|
|
// when decoding a buffer of all zeros. Without this code, we
|
|
// would decode and skip an all-zero buffer of even length.
|
|
// [0 0] is [tag=0/wiretype=varint varint-encoded-0].
|
|
u.setTag(0, zeroField, func(b []byte, f pointer, w int) ([]byte, error) {
|
|
return nil, fmt.Errorf("proto: %s: illegal tag 0 (wire type %d)", t, w)
|
|
}, 0, "")
|
|
|
|
// Set mask for required field check.
|
|
u.reqMask = uint64(1)<<uint(len(u.reqFields)) - 1
|
|
|
|
atomic.StoreInt32(&u.initialized, 1)
|
|
}
|
|
|
|
// setTag stores the unmarshal information for the given tag.
|
|
// tag = tag # for field
|
|
// field/unmarshal = unmarshal info for that field.
|
|
// reqMask = if required, bitmask for field position in required field list. 0 otherwise.
|
|
// name = short name of the field.
|
|
func (u *unmarshalInfo) setTag(tag int, field field, unmarshal unmarshaler, reqMask uint64, name string) {
|
|
i := unmarshalFieldInfo{field: field, unmarshal: unmarshal, reqMask: reqMask, name: name}
|
|
n := u.typ.NumField()
|
|
if tag >= 0 && (tag < 16 || tag < 2*n) { // TODO: what are the right numbers here?
|
|
for len(u.dense) <= tag {
|
|
u.dense = append(u.dense, unmarshalFieldInfo{})
|
|
}
|
|
u.dense[tag] = i
|
|
return
|
|
}
|
|
if u.sparse == nil {
|
|
u.sparse = map[uint64]unmarshalFieldInfo{}
|
|
}
|
|
u.sparse[uint64(tag)] = i
|
|
}
|
|
|
|
// fieldUnmarshaler returns an unmarshaler for the given field.
|
|
func fieldUnmarshaler(f *reflect.StructField) unmarshaler {
|
|
if f.Type.Kind() == reflect.Map {
|
|
return makeUnmarshalMap(f)
|
|
}
|
|
return typeUnmarshaler(f.Type, f.Tag.Get("protobuf"))
|
|
}
|
|
|
|
// typeUnmarshaler returns an unmarshaler for the given field type / field tag pair.
|
|
func typeUnmarshaler(t reflect.Type, tags string) unmarshaler {
|
|
tagArray := strings.Split(tags, ",")
|
|
encoding := tagArray[0]
|
|
name := "unknown"
|
|
proto3 := false
|
|
validateUTF8 := true
|
|
for _, tag := range tagArray[3:] {
|
|
if strings.HasPrefix(tag, "name=") {
|
|
name = tag[5:]
|
|
}
|
|
if tag == "proto3" {
|
|
proto3 = true
|
|
}
|
|
}
|
|
validateUTF8 = validateUTF8 && proto3
|
|
|
|
// Figure out packaging (pointer, slice, or both)
|
|
slice := false
|
|
pointer := 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()
|
|
}
|
|
|
|
// We'll never have both pointer and slice for basic types.
|
|
if pointer && slice && t.Kind() != reflect.Struct {
|
|
panic("both pointer and slice for basic type in " + t.Name())
|
|
}
|
|
|
|
switch t.Kind() {
|
|
case reflect.Bool:
|
|
if pointer {
|
|
return unmarshalBoolPtr
|
|
}
|
|
if slice {
|
|
return unmarshalBoolSlice
|
|
}
|
|
return unmarshalBoolValue
|
|
case reflect.Int32:
|
|
switch encoding {
|
|
case "fixed32":
|
|
if pointer {
|
|
return unmarshalFixedS32Ptr
|
|
}
|
|
if slice {
|
|
return unmarshalFixedS32Slice
|
|
}
|
|
return unmarshalFixedS32Value
|
|
case "varint":
|
|
// this could be int32 or enum
|
|
if pointer {
|
|
return unmarshalInt32Ptr
|
|
}
|
|
if slice {
|
|
return unmarshalInt32Slice
|
|
}
|
|
return unmarshalInt32Value
|
|
case "zigzag32":
|
|
if pointer {
|
|
return unmarshalSint32Ptr
|
|
}
|
|
if slice {
|
|
return unmarshalSint32Slice
|
|
}
|
|
return unmarshalSint32Value
|
|
}
|
|
case reflect.Int64:
|
|
switch encoding {
|
|
case "fixed64":
|
|
if pointer {
|
|
return unmarshalFixedS64Ptr
|
|
}
|
|
if slice {
|
|
return unmarshalFixedS64Slice
|
|
}
|
|
return unmarshalFixedS64Value
|
|
case "varint":
|
|
if pointer {
|
|
return unmarshalInt64Ptr
|
|
}
|
|
if slice {
|
|
return unmarshalInt64Slice
|
|
}
|
|
return unmarshalInt64Value
|
|
case "zigzag64":
|
|
if pointer {
|
|
return unmarshalSint64Ptr
|
|
}
|
|
if slice {
|
|
return unmarshalSint64Slice
|
|
}
|
|
return unmarshalSint64Value
|
|
}
|
|
case reflect.Uint32:
|
|
switch encoding {
|
|
case "fixed32":
|
|
if pointer {
|
|
return unmarshalFixed32Ptr
|
|
}
|
|
if slice {
|
|
return unmarshalFixed32Slice
|
|
}
|
|
return unmarshalFixed32Value
|
|
case "varint":
|
|
if pointer {
|
|
return unmarshalUint32Ptr
|
|
}
|
|
if slice {
|
|
return unmarshalUint32Slice
|
|
}
|
|
return unmarshalUint32Value
|
|
}
|
|
case reflect.Uint64:
|
|
switch encoding {
|
|
case "fixed64":
|
|
if pointer {
|
|
return unmarshalFixed64Ptr
|
|
}
|
|
if slice {
|
|
return unmarshalFixed64Slice
|
|
}
|
|
return unmarshalFixed64Value
|
|
case "varint":
|
|
if pointer {
|
|
return unmarshalUint64Ptr
|
|
}
|
|
if slice {
|
|
return unmarshalUint64Slice
|
|
}
|
|
return unmarshalUint64Value
|
|
}
|
|
case reflect.Float32:
|
|
if pointer {
|
|
return unmarshalFloat32Ptr
|
|
}
|
|
if slice {
|
|
return unmarshalFloat32Slice
|
|
}
|
|
return unmarshalFloat32Value
|
|
case reflect.Float64:
|
|
if pointer {
|
|
return unmarshalFloat64Ptr
|
|
}
|
|
if slice {
|
|
return unmarshalFloat64Slice
|
|
}
|
|
return unmarshalFloat64Value
|
|
case reflect.Map:
|
|
panic("map type in typeUnmarshaler in " + t.Name())
|
|
case reflect.Slice:
|
|
if pointer {
|
|
panic("bad pointer in slice case in " + t.Name())
|
|
}
|
|
if slice {
|
|
return unmarshalBytesSlice
|
|
}
|
|
return unmarshalBytesValue
|
|
case reflect.String:
|
|
if validateUTF8 {
|
|
if pointer {
|
|
return unmarshalUTF8StringPtr
|
|
}
|
|
if slice {
|
|
return unmarshalUTF8StringSlice
|
|
}
|
|
return unmarshalUTF8StringValue
|
|
}
|
|
if pointer {
|
|
return unmarshalStringPtr
|
|
}
|
|
if slice {
|
|
return unmarshalStringSlice
|
|
}
|
|
return unmarshalStringValue
|
|
case reflect.Struct:
|
|
// message or group field
|
|
if !pointer {
|
|
panic(fmt.Sprintf("message/group field %s:%s without pointer", t, encoding))
|
|
}
|
|
switch encoding {
|
|
case "bytes":
|
|
if slice {
|
|
return makeUnmarshalMessageSlicePtr(getUnmarshalInfo(t), name)
|
|
}
|
|
return makeUnmarshalMessagePtr(getUnmarshalInfo(t), name)
|
|
case "group":
|
|
if slice {
|
|
return makeUnmarshalGroupSlicePtr(getUnmarshalInfo(t), name)
|
|
}
|
|
return makeUnmarshalGroupPtr(getUnmarshalInfo(t), name)
|
|
}
|
|
}
|
|
panic(fmt.Sprintf("unmarshaler not found type:%s encoding:%s", t, encoding))
|
|
}
|
|
|
|
// Below are all the unmarshalers for individual fields of various types.
|
|
|
|
func unmarshalInt64Value(b []byte, f pointer, w int) ([]byte, error) {
|
|
if w != WireVarint {
|
|
return b, errInternalBadWireType
|
|
}
|
|
x, n := decodeVarint(b)
|
|
if n == 0 {
|
|
return nil, io.ErrUnexpectedEOF
|
|
}
|
|
b = b[n:]
|
|
v := int64(x)
|
|
*f.toInt64() = v
|
|
return b, nil
|
|
}
|
|
|
|
func unmarshalInt64Ptr(b []byte, f pointer, w int) ([]byte, error) {
|
|
if w != WireVarint {
|
|
return b, errInternalBadWireType
|
|
}
|
|
x, n := decodeVarint(b)
|
|
if n == 0 {
|
|
return nil, io.ErrUnexpectedEOF
|
|
}
|
|
b = b[n:]
|
|
v := int64(x)
|
|
*f.toInt64Ptr() = &v
|
|
return b, nil
|
|
}
|
|
|
|
func unmarshalInt64Slice(b []byte, f pointer, w int) ([]byte, error) {
|
|
if w == WireBytes { // packed
|
|
x, n := decodeVarint(b)
|
|
if n == 0 {
|
|
return nil, io.ErrUnexpectedEOF
|
|
}
|
|
b = b[n:]
|
|
if x > uint64(len(b)) {
|
|
return nil, io.ErrUnexpectedEOF
|
|
}
|
|
res := b[x:]
|
|
b = b[:x]
|
|
for len(b) > 0 {
|
|
x, n = decodeVarint(b)
|
|
if n == 0 {
|
|
return nil, io.ErrUnexpectedEOF
|
|
}
|
|
b = b[n:]
|
|
v := int64(x)
|
|
s := f.toInt64Slice()
|
|
*s = append(*s, v)
|
|
}
|
|
return res, nil
|
|
}
|
|
if w != WireVarint {
|
|
return b, errInternalBadWireType
|
|
}
|
|
x, n := decodeVarint(b)
|
|
if n == 0 {
|
|
return nil, io.ErrUnexpectedEOF
|
|
}
|
|
b = b[n:]
|
|
v := int64(x)
|
|
s := f.toInt64Slice()
|
|
*s = append(*s, v)
|
|
return b, nil
|
|
}
|
|
|
|
func unmarshalSint64Value(b []byte, f pointer, w int) ([]byte, error) {
|
|
if w != WireVarint {
|
|
return b, errInternalBadWireType
|
|
}
|
|
x, n := decodeVarint(b)
|
|
if n == 0 {
|
|
return nil, io.ErrUnexpectedEOF
|
|
}
|
|
b = b[n:]
|
|
v := int64(x>>1) ^ int64(x)<<63>>63
|
|
*f.toInt64() = v
|
|
return b, nil
|
|
}
|
|
|
|
func unmarshalSint64Ptr(b []byte, f pointer, w int) ([]byte, error) {
|
|
if w != WireVarint {
|
|
return b, errInternalBadWireType
|
|
}
|
|
x, n := decodeVarint(b)
|
|
if n == 0 {
|
|
return nil, io.ErrUnexpectedEOF
|
|
}
|
|
b = b[n:]
|
|
v := int64(x>>1) ^ int64(x)<<63>>63
|
|
*f.toInt64Ptr() = &v
|
|
return b, nil
|
|
}
|
|
|
|
func unmarshalSint64Slice(b []byte, f pointer, w int) ([]byte, error) {
|
|
if w == WireBytes { // packed
|
|
x, n := decodeVarint(b)
|
|
if n == 0 {
|
|
return nil, io.ErrUnexpectedEOF
|
|
}
|
|
b = b[n:]
|
|
if x > uint64(len(b)) {
|
|
return nil, io.ErrUnexpectedEOF
|
|
}
|
|
res := b[x:]
|
|
b = b[:x]
|
|
for len(b) > 0 {
|
|
x, n = decodeVarint(b)
|
|
if n == 0 {
|
|
return nil, io.ErrUnexpectedEOF
|
|
}
|
|
b = b[n:]
|
|
v := int64(x>>1) ^ int64(x)<<63>>63
|
|
s := f.toInt64Slice()
|
|
*s = append(*s, v)
|
|
}
|
|
return res, nil
|
|
}
|
|
if w != WireVarint {
|
|
return b, errInternalBadWireType
|
|
}
|
|
x, n := decodeVarint(b)
|
|
if n == 0 {
|
|
return nil, io.ErrUnexpectedEOF
|
|
}
|
|
b = b[n:]
|
|
v := int64(x>>1) ^ int64(x)<<63>>63
|
|
s := f.toInt64Slice()
|
|
*s = append(*s, v)
|
|
return b, nil
|
|
}
|
|
|
|
func unmarshalUint64Value(b []byte, f pointer, w int) ([]byte, error) {
|
|
if w != WireVarint {
|
|
return b, errInternalBadWireType
|
|
}
|
|
x, n := decodeVarint(b)
|
|
if n == 0 {
|
|
return nil, io.ErrUnexpectedEOF
|
|
}
|
|
b = b[n:]
|
|
v := uint64(x)
|
|
*f.toUint64() = v
|
|
return b, nil
|
|
}
|
|
|
|
func unmarshalUint64Ptr(b []byte, f pointer, w int) ([]byte, error) {
|
|
if w != WireVarint {
|
|
return b, errInternalBadWireType
|
|
}
|
|
x, n := decodeVarint(b)
|
|
if n == 0 {
|
|
return nil, io.ErrUnexpectedEOF
|
|
}
|
|
b = b[n:]
|
|
v := uint64(x)
|
|
*f.toUint64Ptr() = &v
|
|
return b, nil
|
|
}
|
|
|
|
func unmarshalUint64Slice(b []byte, f pointer, w int) ([]byte, error) {
|
|
if w == WireBytes { // packed
|
|
x, n := decodeVarint(b)
|
|
if n == 0 {
|
|
return nil, io.ErrUnexpectedEOF
|
|
}
|
|
b = b[n:]
|
|
if x > uint64(len(b)) {
|
|
return nil, io.ErrUnexpectedEOF
|
|
}
|
|
res := b[x:]
|
|
b = b[:x]
|
|
for len(b) > 0 {
|
|
x, n = decodeVarint(b)
|
|
if n == 0 {
|
|
return nil, io.ErrUnexpectedEOF
|
|
}
|
|
b = b[n:]
|
|
v := uint64(x)
|
|
s := f.toUint64Slice()
|
|
*s = append(*s, v)
|
|
}
|
|
return res, nil
|
|
}
|
|
if w != WireVarint {
|
|
return b, errInternalBadWireType
|
|
}
|
|
x, n := decodeVarint(b)
|
|
if n == 0 {
|
|
return nil, io.ErrUnexpectedEOF
|
|
}
|
|
b = b[n:]
|
|
v := uint64(x)
|
|
s := f.toUint64Slice()
|
|
*s = append(*s, v)
|
|
return b, nil
|
|
}
|
|
|
|
func unmarshalInt32Value(b []byte, f pointer, w int) ([]byte, error) {
|
|
if w != WireVarint {
|
|
return b, errInternalBadWireType
|
|
}
|
|
x, n := decodeVarint(b)
|
|
if n == 0 {
|
|
return nil, io.ErrUnexpectedEOF
|
|
}
|
|
b = b[n:]
|
|
v := int32(x)
|
|
*f.toInt32() = v
|
|
return b, nil
|
|
}
|
|
|
|
func unmarshalInt32Ptr(b []byte, f pointer, w int) ([]byte, error) {
|
|
if w != WireVarint {
|
|
return b, errInternalBadWireType
|
|
}
|
|
x, n := decodeVarint(b)
|
|
if n == 0 {
|
|
return nil, io.ErrUnexpectedEOF
|
|
}
|
|
b = b[n:]
|
|
v := int32(x)
|
|
f.setInt32Ptr(v)
|
|
return b, nil
|
|
}
|
|
|
|
func unmarshalInt32Slice(b []byte, f pointer, w int) ([]byte, error) {
|
|
if w == WireBytes { // packed
|
|
x, n := decodeVarint(b)
|
|
if n == 0 {
|
|
return nil, io.ErrUnexpectedEOF
|
|
}
|
|
b = b[n:]
|
|
if x > uint64(len(b)) {
|
|
return nil, io.ErrUnexpectedEOF
|
|
}
|
|
res := b[x:]
|
|
b = b[:x]
|
|
for len(b) > 0 {
|
|
x, n = decodeVarint(b)
|
|
if n == 0 {
|
|
return nil, io.ErrUnexpectedEOF
|
|
}
|
|
b = b[n:]
|
|
v := int32(x)
|
|
f.appendInt32Slice(v)
|
|
}
|
|
return res, nil
|
|
}
|
|
if w != WireVarint {
|
|
return b, errInternalBadWireType
|
|
}
|
|
x, n := decodeVarint(b)
|
|
if n == 0 {
|
|
return nil, io.ErrUnexpectedEOF
|
|
}
|
|
b = b[n:]
|
|
v := int32(x)
|
|
f.appendInt32Slice(v)
|
|
return b, nil
|
|
}
|
|
|
|
func unmarshalSint32Value(b []byte, f pointer, w int) ([]byte, error) {
|
|
if w != WireVarint {
|
|
return b, errInternalBadWireType
|
|
}
|
|
x, n := decodeVarint(b)
|
|
if n == 0 {
|
|
return nil, io.ErrUnexpectedEOF
|
|
}
|
|
b = b[n:]
|
|
v := int32(x>>1) ^ int32(x)<<31>>31
|
|
*f.toInt32() = v
|
|
return b, nil
|
|
}
|
|
|
|
func unmarshalSint32Ptr(b []byte, f pointer, w int) ([]byte, error) {
|
|
if w != WireVarint {
|
|
return b, errInternalBadWireType
|
|
}
|
|
x, n := decodeVarint(b)
|
|
if n == 0 {
|
|
return nil, io.ErrUnexpectedEOF
|
|
}
|
|
b = b[n:]
|
|
v := int32(x>>1) ^ int32(x)<<31>>31
|
|
f.setInt32Ptr(v)
|
|
return b, nil
|
|
}
|
|
|
|
func unmarshalSint32Slice(b []byte, f pointer, w int) ([]byte, error) {
|
|
if w == WireBytes { // packed
|
|
x, n := decodeVarint(b)
|
|
if n == 0 {
|
|
return nil, io.ErrUnexpectedEOF
|
|
}
|
|
b = b[n:]
|
|
if x > uint64(len(b)) {
|
|
return nil, io.ErrUnexpectedEOF
|
|
}
|
|
res := b[x:]
|
|
b = b[:x]
|
|
for len(b) > 0 {
|
|
x, n = decodeVarint(b)
|
|
if n == 0 {
|
|
return nil, io.ErrUnexpectedEOF
|
|
}
|
|
b = b[n:]
|
|
v := int32(x>>1) ^ int32(x)<<31>>31
|
|
f.appendInt32Slice(v)
|
|
}
|
|
return res, nil
|
|
}
|
|
if w != WireVarint {
|
|
return b, errInternalBadWireType
|
|
}
|
|
x, n := decodeVarint(b)
|
|
if n == 0 {
|
|
return nil, io.ErrUnexpectedEOF
|
|
}
|
|
b = b[n:]
|
|
v := int32(x>>1) ^ int32(x)<<31>>31
|
|
f.appendInt32Slice(v)
|
|
return b, nil
|
|
}
|
|
|
|
func unmarshalUint32Value(b []byte, f pointer, w int) ([]byte, error) {
|
|
if w != WireVarint {
|
|
return b, errInternalBadWireType
|
|
}
|
|
x, n := decodeVarint(b)
|
|
if n == 0 {
|
|
return nil, io.ErrUnexpectedEOF
|
|
}
|
|
b = b[n:]
|
|
v := uint32(x)
|
|
*f.toUint32() = v
|
|
return b, nil
|
|
}
|
|
|
|
func unmarshalUint32Ptr(b []byte, f pointer, w int) ([]byte, error) {
|
|
if w != WireVarint {
|
|
return b, errInternalBadWireType
|
|
}
|
|
x, n := decodeVarint(b)
|
|
if n == 0 {
|
|
return nil, io.ErrUnexpectedEOF
|
|
}
|
|
b = b[n:]
|
|
v := uint32(x)
|
|
*f.toUint32Ptr() = &v
|
|
return b, nil
|
|
}
|
|
|
|
func unmarshalUint32Slice(b []byte, f pointer, w int) ([]byte, error) {
|
|
if w == WireBytes { // packed
|
|
x, n := decodeVarint(b)
|
|
if n == 0 {
|
|
return nil, io.ErrUnexpectedEOF
|
|
}
|
|
b = b[n:]
|
|
if x > uint64(len(b)) {
|
|
return nil, io.ErrUnexpectedEOF
|
|
}
|
|
res := b[x:]
|
|
b = b[:x]
|
|
for len(b) > 0 {
|
|
x, n = decodeVarint(b)
|
|
if n == 0 {
|
|
return nil, io.ErrUnexpectedEOF
|
|
}
|
|
b = b[n:]
|
|
v := uint32(x)
|
|
s := f.toUint32Slice()
|
|
*s = append(*s, v)
|
|
}
|
|
return res, nil
|
|
}
|
|
if w != WireVarint {
|
|
return b, errInternalBadWireType
|
|
}
|
|
x, n := decodeVarint(b)
|
|
if n == 0 {
|
|
return nil, io.ErrUnexpectedEOF
|
|
}
|
|
b = b[n:]
|
|
v := uint32(x)
|
|
s := f.toUint32Slice()
|
|
*s = append(*s, v)
|
|
return b, nil
|
|
}
|
|
|
|
func unmarshalFixed64Value(b []byte, f pointer, w int) ([]byte, error) {
|
|
if w != WireFixed64 {
|
|
return b, errInternalBadWireType
|
|
}
|
|
if len(b) < 8 {
|
|
return nil, io.ErrUnexpectedEOF
|
|
}
|
|
v := uint64(b[0]) | uint64(b[1])<<8 | uint64(b[2])<<16 | uint64(b[3])<<24 | uint64(b[4])<<32 | uint64(b[5])<<40 | uint64(b[6])<<48 | uint64(b[7])<<56
|
|
*f.toUint64() = v
|
|
return b[8:], nil
|
|
}
|
|
|
|
func unmarshalFixed64Ptr(b []byte, f pointer, w int) ([]byte, error) {
|
|
if w != WireFixed64 {
|
|
return b, errInternalBadWireType
|
|
}
|
|
if len(b) < 8 {
|
|
return nil, io.ErrUnexpectedEOF
|
|
}
|
|
v := uint64(b[0]) | uint64(b[1])<<8 | uint64(b[2])<<16 | uint64(b[3])<<24 | uint64(b[4])<<32 | uint64(b[5])<<40 | uint64(b[6])<<48 | uint64(b[7])<<56
|
|
*f.toUint64Ptr() = &v
|
|
return b[8:], nil
|
|
}
|
|
|
|
func unmarshalFixed64Slice(b []byte, f pointer, w int) ([]byte, error) {
|
|
if w == WireBytes { // packed
|
|
x, n := decodeVarint(b)
|
|
if n == 0 {
|
|
return nil, io.ErrUnexpectedEOF
|
|
}
|
|
b = b[n:]
|
|
if x > uint64(len(b)) {
|
|
return nil, io.ErrUnexpectedEOF
|
|
}
|
|
res := b[x:]
|
|
b = b[:x]
|
|
for len(b) > 0 {
|
|
if len(b) < 8 {
|
|
return nil, io.ErrUnexpectedEOF
|
|
}
|
|
v := uint64(b[0]) | uint64(b[1])<<8 | uint64(b[2])<<16 | uint64(b[3])<<24 | uint64(b[4])<<32 | uint64(b[5])<<40 | uint64(b[6])<<48 | uint64(b[7])<<56
|
|
s := f.toUint64Slice()
|
|
*s = append(*s, v)
|
|
b = b[8:]
|
|
}
|
|
return res, nil
|
|
}
|
|
if w != WireFixed64 {
|
|
return b, errInternalBadWireType
|
|
}
|
|
if len(b) < 8 {
|
|
return nil, io.ErrUnexpectedEOF
|
|
}
|
|
v := uint64(b[0]) | uint64(b[1])<<8 | uint64(b[2])<<16 | uint64(b[3])<<24 | uint64(b[4])<<32 | uint64(b[5])<<40 | uint64(b[6])<<48 | uint64(b[7])<<56
|
|
s := f.toUint64Slice()
|
|
*s = append(*s, v)
|
|
return b[8:], nil
|
|
}
|
|
|
|
func unmarshalFixedS64Value(b []byte, f pointer, w int) ([]byte, error) {
|
|
if w != WireFixed64 {
|
|
return b, errInternalBadWireType
|
|
}
|
|
if len(b) < 8 {
|
|
return nil, io.ErrUnexpectedEOF
|
|
}
|
|
v := int64(b[0]) | int64(b[1])<<8 | int64(b[2])<<16 | int64(b[3])<<24 | int64(b[4])<<32 | int64(b[5])<<40 | int64(b[6])<<48 | int64(b[7])<<56
|
|
*f.toInt64() = v
|
|
return b[8:], nil
|
|
}
|
|
|
|
func unmarshalFixedS64Ptr(b []byte, f pointer, w int) ([]byte, error) {
|
|
if w != WireFixed64 {
|
|
return b, errInternalBadWireType
|
|
}
|
|
if len(b) < 8 {
|
|
return nil, io.ErrUnexpectedEOF
|
|
}
|
|
v := int64(b[0]) | int64(b[1])<<8 | int64(b[2])<<16 | int64(b[3])<<24 | int64(b[4])<<32 | int64(b[5])<<40 | int64(b[6])<<48 | int64(b[7])<<56
|
|
*f.toInt64Ptr() = &v
|
|
return b[8:], nil
|
|
}
|
|
|
|
func unmarshalFixedS64Slice(b []byte, f pointer, w int) ([]byte, error) {
|
|
if w == WireBytes { // packed
|
|
x, n := decodeVarint(b)
|
|
if n == 0 {
|
|
return nil, io.ErrUnexpectedEOF
|
|
}
|
|
b = b[n:]
|
|
if x > uint64(len(b)) {
|
|
return nil, io.ErrUnexpectedEOF
|
|
}
|
|
res := b[x:]
|
|
b = b[:x]
|
|
for len(b) > 0 {
|
|
if len(b) < 8 {
|
|
return nil, io.ErrUnexpectedEOF
|
|
}
|
|
v := int64(b[0]) | int64(b[1])<<8 | int64(b[2])<<16 | int64(b[3])<<24 | int64(b[4])<<32 | int64(b[5])<<40 | int64(b[6])<<48 | int64(b[7])<<56
|
|
s := f.toInt64Slice()
|
|
*s = append(*s, v)
|
|
b = b[8:]
|
|
}
|
|
return res, nil
|
|
}
|
|
if w != WireFixed64 {
|
|
return b, errInternalBadWireType
|
|
}
|
|
if len(b) < 8 {
|
|
return nil, io.ErrUnexpectedEOF
|
|
}
|
|
v := int64(b[0]) | int64(b[1])<<8 | int64(b[2])<<16 | int64(b[3])<<24 | int64(b[4])<<32 | int64(b[5])<<40 | int64(b[6])<<48 | int64(b[7])<<56
|
|
s := f.toInt64Slice()
|
|
*s = append(*s, v)
|
|
return b[8:], nil
|
|
}
|
|
|
|
func unmarshalFixed32Value(b []byte, f pointer, w int) ([]byte, error) {
|
|
if w != WireFixed32 {
|
|
return b, errInternalBadWireType
|
|
}
|
|
if len(b) < 4 {
|
|
return nil, io.ErrUnexpectedEOF
|
|
}
|
|
v := uint32(b[0]) | uint32(b[1])<<8 | uint32(b[2])<<16 | uint32(b[3])<<24
|
|
*f.toUint32() = v
|
|
return b[4:], nil
|
|
}
|
|
|
|
func unmarshalFixed32Ptr(b []byte, f pointer, w int) ([]byte, error) {
|
|
if w != WireFixed32 {
|
|
return b, errInternalBadWireType
|
|
}
|
|
if len(b) < 4 {
|
|
return nil, io.ErrUnexpectedEOF
|
|
}
|
|
v := uint32(b[0]) | uint32(b[1])<<8 | uint32(b[2])<<16 | uint32(b[3])<<24
|
|
*f.toUint32Ptr() = &v
|
|
return b[4:], nil
|
|
}
|
|
|
|
func unmarshalFixed32Slice(b []byte, f pointer, w int) ([]byte, error) {
|
|
if w == WireBytes { // packed
|
|
x, n := decodeVarint(b)
|
|
if n == 0 {
|
|
return nil, io.ErrUnexpectedEOF
|
|
}
|
|
b = b[n:]
|
|
if x > uint64(len(b)) {
|
|
return nil, io.ErrUnexpectedEOF
|
|
}
|
|
res := b[x:]
|
|
b = b[:x]
|
|
for len(b) > 0 {
|
|
if len(b) < 4 {
|
|
return nil, io.ErrUnexpectedEOF
|
|
}
|
|
v := uint32(b[0]) | uint32(b[1])<<8 | uint32(b[2])<<16 | uint32(b[3])<<24
|
|
s := f.toUint32Slice()
|
|
*s = append(*s, v)
|
|
b = b[4:]
|
|
}
|
|
return res, nil
|
|
}
|
|
if w != WireFixed32 {
|
|
return b, errInternalBadWireType
|
|
}
|
|
if len(b) < 4 {
|
|
return nil, io.ErrUnexpectedEOF
|
|
}
|
|
v := uint32(b[0]) | uint32(b[1])<<8 | uint32(b[2])<<16 | uint32(b[3])<<24
|
|
s := f.toUint32Slice()
|
|
*s = append(*s, v)
|
|
return b[4:], nil
|
|
}
|
|
|
|
func unmarshalFixedS32Value(b []byte, f pointer, w int) ([]byte, error) {
|
|
if w != WireFixed32 {
|
|
return b, errInternalBadWireType
|
|
}
|
|
if len(b) < 4 {
|
|
return nil, io.ErrUnexpectedEOF
|
|
}
|
|
v := int32(b[0]) | int32(b[1])<<8 | int32(b[2])<<16 | int32(b[3])<<24
|
|
*f.toInt32() = v
|
|
return b[4:], nil
|
|
}
|
|
|
|
func unmarshalFixedS32Ptr(b []byte, f pointer, w int) ([]byte, error) {
|
|
if w != WireFixed32 {
|
|
return b, errInternalBadWireType
|
|
}
|
|
if len(b) < 4 {
|
|
return nil, io.ErrUnexpectedEOF
|
|
}
|
|
v := int32(b[0]) | int32(b[1])<<8 | int32(b[2])<<16 | int32(b[3])<<24
|
|
f.setInt32Ptr(v)
|
|
return b[4:], nil
|
|
}
|
|
|
|
func unmarshalFixedS32Slice(b []byte, f pointer, w int) ([]byte, error) {
|
|
if w == WireBytes { // packed
|
|
x, n := decodeVarint(b)
|
|
if n == 0 {
|
|
return nil, io.ErrUnexpectedEOF
|
|
}
|
|
b = b[n:]
|
|
if x > uint64(len(b)) {
|
|
return nil, io.ErrUnexpectedEOF
|
|
}
|
|
res := b[x:]
|
|
b = b[:x]
|
|
for len(b) > 0 {
|
|
if len(b) < 4 {
|
|
return nil, io.ErrUnexpectedEOF
|
|
}
|
|
v := int32(b[0]) | int32(b[1])<<8 | int32(b[2])<<16 | int32(b[3])<<24
|
|
f.appendInt32Slice(v)
|
|
b = b[4:]
|
|
}
|
|
return res, nil
|
|
}
|
|
if w != WireFixed32 {
|
|
return b, errInternalBadWireType
|
|
}
|
|
if len(b) < 4 {
|
|
return nil, io.ErrUnexpectedEOF
|
|
}
|
|
v := int32(b[0]) | int32(b[1])<<8 | int32(b[2])<<16 | int32(b[3])<<24
|
|
f.appendInt32Slice(v)
|
|
return b[4:], nil
|
|
}
|
|
|
|
func unmarshalBoolValue(b []byte, f pointer, w int) ([]byte, error) {
|
|
if w != WireVarint {
|
|
return b, errInternalBadWireType
|
|
}
|
|
// Note: any length varint is allowed, even though any sane
|
|
// encoder will use one byte.
|
|
// See https://github.com/golang/protobuf/issues/76
|
|
x, n := decodeVarint(b)
|
|
if n == 0 {
|
|
return nil, io.ErrUnexpectedEOF
|
|
}
|
|
// TODO: check if x>1? Tests seem to indicate no.
|
|
v := x != 0
|
|
*f.toBool() = v
|
|
return b[n:], nil
|
|
}
|
|
|
|
func unmarshalBoolPtr(b []byte, f pointer, w int) ([]byte, error) {
|
|
if w != WireVarint {
|
|
return b, errInternalBadWireType
|
|
}
|
|
x, n := decodeVarint(b)
|
|
if n == 0 {
|
|
return nil, io.ErrUnexpectedEOF
|
|
}
|
|
v := x != 0
|
|
*f.toBoolPtr() = &v
|
|
return b[n:], nil
|
|
}
|
|
|
|
func unmarshalBoolSlice(b []byte, f pointer, w int) ([]byte, error) {
|
|
if w == WireBytes { // packed
|
|
x, n := decodeVarint(b)
|
|
if n == 0 {
|
|
return nil, io.ErrUnexpectedEOF
|
|
}
|
|
b = b[n:]
|
|
if x > uint64(len(b)) {
|
|
return nil, io.ErrUnexpectedEOF
|
|
}
|
|
res := b[x:]
|
|
b = b[:x]
|
|
for len(b) > 0 {
|
|
x, n = decodeVarint(b)
|
|
if n == 0 {
|
|
return nil, io.ErrUnexpectedEOF
|
|
}
|
|
v := x != 0
|
|
s := f.toBoolSlice()
|
|
*s = append(*s, v)
|
|
b = b[n:]
|
|
}
|
|
return res, nil
|
|
}
|
|
if w != WireVarint {
|
|
return b, errInternalBadWireType
|
|
}
|
|
x, n := decodeVarint(b)
|
|
if n == 0 {
|
|
return nil, io.ErrUnexpectedEOF
|
|
}
|
|
v := x != 0
|
|
s := f.toBoolSlice()
|
|
*s = append(*s, v)
|
|
return b[n:], nil
|
|
}
|
|
|
|
func unmarshalFloat64Value(b []byte, f pointer, w int) ([]byte, error) {
|
|
if w != WireFixed64 {
|
|
return b, errInternalBadWireType
|
|
}
|
|
if len(b) < 8 {
|
|
return nil, io.ErrUnexpectedEOF
|
|
}
|
|
v := math.Float64frombits(uint64(b[0]) | uint64(b[1])<<8 | uint64(b[2])<<16 | uint64(b[3])<<24 | uint64(b[4])<<32 | uint64(b[5])<<40 | uint64(b[6])<<48 | uint64(b[7])<<56)
|
|
*f.toFloat64() = v
|
|
return b[8:], nil
|
|
}
|
|
|
|
func unmarshalFloat64Ptr(b []byte, f pointer, w int) ([]byte, error) {
|
|
if w != WireFixed64 {
|
|
return b, errInternalBadWireType
|
|
}
|
|
if len(b) < 8 {
|
|
return nil, io.ErrUnexpectedEOF
|
|
}
|
|
v := math.Float64frombits(uint64(b[0]) | uint64(b[1])<<8 | uint64(b[2])<<16 | uint64(b[3])<<24 | uint64(b[4])<<32 | uint64(b[5])<<40 | uint64(b[6])<<48 | uint64(b[7])<<56)
|
|
*f.toFloat64Ptr() = &v
|
|
return b[8:], nil
|
|
}
|
|
|
|
func unmarshalFloat64Slice(b []byte, f pointer, w int) ([]byte, error) {
|
|
if w == WireBytes { // packed
|
|
x, n := decodeVarint(b)
|
|
if n == 0 {
|
|
return nil, io.ErrUnexpectedEOF
|
|
}
|
|
b = b[n:]
|
|
if x > uint64(len(b)) {
|
|
return nil, io.ErrUnexpectedEOF
|
|
}
|
|
res := b[x:]
|
|
b = b[:x]
|
|
for len(b) > 0 {
|
|
if len(b) < 8 {
|
|
return nil, io.ErrUnexpectedEOF
|
|
}
|
|
v := math.Float64frombits(uint64(b[0]) | uint64(b[1])<<8 | uint64(b[2])<<16 | uint64(b[3])<<24 | uint64(b[4])<<32 | uint64(b[5])<<40 | uint64(b[6])<<48 | uint64(b[7])<<56)
|
|
s := f.toFloat64Slice()
|
|
*s = append(*s, v)
|
|
b = b[8:]
|
|
}
|
|
return res, nil
|
|
}
|
|
if w != WireFixed64 {
|
|
return b, errInternalBadWireType
|
|
}
|
|
if len(b) < 8 {
|
|
return nil, io.ErrUnexpectedEOF
|
|
}
|
|
v := math.Float64frombits(uint64(b[0]) | uint64(b[1])<<8 | uint64(b[2])<<16 | uint64(b[3])<<24 | uint64(b[4])<<32 | uint64(b[5])<<40 | uint64(b[6])<<48 | uint64(b[7])<<56)
|
|
s := f.toFloat64Slice()
|
|
*s = append(*s, v)
|
|
return b[8:], nil
|
|
}
|
|
|
|
func unmarshalFloat32Value(b []byte, f pointer, w int) ([]byte, error) {
|
|
if w != WireFixed32 {
|
|
return b, errInternalBadWireType
|
|
}
|
|
if len(b) < 4 {
|
|
return nil, io.ErrUnexpectedEOF
|
|
}
|
|
v := math.Float32frombits(uint32(b[0]) | uint32(b[1])<<8 | uint32(b[2])<<16 | uint32(b[3])<<24)
|
|
*f.toFloat32() = v
|
|
return b[4:], nil
|
|
}
|
|
|
|
func unmarshalFloat32Ptr(b []byte, f pointer, w int) ([]byte, error) {
|
|
if w != WireFixed32 {
|
|
return b, errInternalBadWireType
|
|
}
|
|
if len(b) < 4 {
|
|
return nil, io.ErrUnexpectedEOF
|
|
}
|
|
v := math.Float32frombits(uint32(b[0]) | uint32(b[1])<<8 | uint32(b[2])<<16 | uint32(b[3])<<24)
|
|
*f.toFloat32Ptr() = &v
|
|
return b[4:], nil
|
|
}
|
|
|
|
func unmarshalFloat32Slice(b []byte, f pointer, w int) ([]byte, error) {
|
|
if w == WireBytes { // packed
|
|
x, n := decodeVarint(b)
|
|
if n == 0 {
|
|
return nil, io.ErrUnexpectedEOF
|
|
}
|
|
b = b[n:]
|
|
if x > uint64(len(b)) {
|
|
return nil, io.ErrUnexpectedEOF
|
|
}
|
|
res := b[x:]
|
|
b = b[:x]
|
|
for len(b) > 0 {
|
|
if len(b) < 4 {
|
|
return nil, io.ErrUnexpectedEOF
|
|
}
|
|
v := math.Float32frombits(uint32(b[0]) | uint32(b[1])<<8 | uint32(b[2])<<16 | uint32(b[3])<<24)
|
|
s := f.toFloat32Slice()
|
|
*s = append(*s, v)
|
|
b = b[4:]
|
|
}
|
|
return res, nil
|
|
}
|
|
if w != WireFixed32 {
|
|
return b, errInternalBadWireType
|
|
}
|
|
if len(b) < 4 {
|
|
return nil, io.ErrUnexpectedEOF
|
|
}
|
|
v := math.Float32frombits(uint32(b[0]) | uint32(b[1])<<8 | uint32(b[2])<<16 | uint32(b[3])<<24)
|
|
s := f.toFloat32Slice()
|
|
*s = append(*s, v)
|
|
return b[4:], nil
|
|
}
|
|
|
|
func unmarshalStringValue(b []byte, f pointer, w int) ([]byte, error) {
|
|
if w != WireBytes {
|
|
return b, errInternalBadWireType
|
|
}
|
|
x, n := decodeVarint(b)
|
|
if n == 0 {
|
|
return nil, io.ErrUnexpectedEOF
|
|
}
|
|
b = b[n:]
|
|
if x > uint64(len(b)) {
|
|
return nil, io.ErrUnexpectedEOF
|
|
}
|
|
v := string(b[:x])
|
|
*f.toString() = v
|
|
return b[x:], nil
|
|
}
|
|
|
|
func unmarshalStringPtr(b []byte, f pointer, w int) ([]byte, error) {
|
|
if w != WireBytes {
|
|
return b, errInternalBadWireType
|
|
}
|
|
x, n := decodeVarint(b)
|
|
if n == 0 {
|
|
return nil, io.ErrUnexpectedEOF
|
|
}
|
|
b = b[n:]
|
|
if x > uint64(len(b)) {
|
|
return nil, io.ErrUnexpectedEOF
|
|
}
|
|
v := string(b[:x])
|
|
*f.toStringPtr() = &v
|
|
return b[x:], nil
|
|
}
|
|
|
|
func unmarshalStringSlice(b []byte, f pointer, w int) ([]byte, error) {
|
|
if w != WireBytes {
|
|
return b, errInternalBadWireType
|
|
}
|
|
x, n := decodeVarint(b)
|
|
if n == 0 {
|
|
return nil, io.ErrUnexpectedEOF
|
|
}
|
|
b = b[n:]
|
|
if x > uint64(len(b)) {
|
|
return nil, io.ErrUnexpectedEOF
|
|
}
|
|
v := string(b[:x])
|
|
s := f.toStringSlice()
|
|
*s = append(*s, v)
|
|
return b[x:], nil
|
|
}
|
|
|
|
func unmarshalUTF8StringValue(b []byte, f pointer, w int) ([]byte, error) {
|
|
if w != WireBytes {
|
|
return b, errInternalBadWireType
|
|
}
|
|
x, n := decodeVarint(b)
|
|
if n == 0 {
|
|
return nil, io.ErrUnexpectedEOF
|
|
}
|
|
b = b[n:]
|
|
if x > uint64(len(b)) {
|
|
return nil, io.ErrUnexpectedEOF
|
|
}
|
|
v := string(b[:x])
|
|
*f.toString() = v
|
|
if !utf8.ValidString(v) {
|
|
return b[x:], errInvalidUTF8
|
|
}
|
|
return b[x:], nil
|
|
}
|
|
|
|
func unmarshalUTF8StringPtr(b []byte, f pointer, w int) ([]byte, error) {
|
|
if w != WireBytes {
|
|
return b, errInternalBadWireType
|
|
}
|
|
x, n := decodeVarint(b)
|
|
if n == 0 {
|
|
return nil, io.ErrUnexpectedEOF
|
|
}
|
|
b = b[n:]
|
|
if x > uint64(len(b)) {
|
|
return nil, io.ErrUnexpectedEOF
|
|
}
|
|
v := string(b[:x])
|
|
*f.toStringPtr() = &v
|
|
if !utf8.ValidString(v) {
|
|
return b[x:], errInvalidUTF8
|
|
}
|
|
return b[x:], nil
|
|
}
|
|
|
|
func unmarshalUTF8StringSlice(b []byte, f pointer, w int) ([]byte, error) {
|
|
if w != WireBytes {
|
|
return b, errInternalBadWireType
|
|
}
|
|
x, n := decodeVarint(b)
|
|
if n == 0 {
|
|
return nil, io.ErrUnexpectedEOF
|
|
}
|
|
b = b[n:]
|
|
if x > uint64(len(b)) {
|
|
return nil, io.ErrUnexpectedEOF
|
|
}
|
|
v := string(b[:x])
|
|
s := f.toStringSlice()
|
|
*s = append(*s, v)
|
|
if !utf8.ValidString(v) {
|
|
return b[x:], errInvalidUTF8
|
|
}
|
|
return b[x:], nil
|
|
}
|
|
|
|
var emptyBuf [0]byte
|
|
|
|
func unmarshalBytesValue(b []byte, f pointer, w int) ([]byte, error) {
|
|
if w != WireBytes {
|
|
return b, errInternalBadWireType
|
|
}
|
|
x, n := decodeVarint(b)
|
|
if n == 0 {
|
|
return nil, io.ErrUnexpectedEOF
|
|
}
|
|
b = b[n:]
|
|
if x > uint64(len(b)) {
|
|
return nil, io.ErrUnexpectedEOF
|
|
}
|
|
// The use of append here is a trick which avoids the zeroing
|
|
// that would be required if we used a make/copy pair.
|
|
// We append to emptyBuf instead of nil because we want
|
|
// a non-nil result even when the length is 0.
|
|
v := append(emptyBuf[:], b[:x]...)
|
|
*f.toBytes() = v
|
|
return b[x:], nil
|
|
}
|
|
|
|
func unmarshalBytesSlice(b []byte, f pointer, w int) ([]byte, error) {
|
|
if w != WireBytes {
|
|
return b, errInternalBadWireType
|
|
}
|
|
x, n := decodeVarint(b)
|
|
if n == 0 {
|
|
return nil, io.ErrUnexpectedEOF
|
|
}
|
|
b = b[n:]
|
|
if x > uint64(len(b)) {
|
|
return nil, io.ErrUnexpectedEOF
|
|
}
|
|
v := append(emptyBuf[:], b[:x]...)
|
|
s := f.toBytesSlice()
|
|
*s = append(*s, v)
|
|
return b[x:], nil
|
|
}
|
|
|
|
func makeUnmarshalMessagePtr(sub *unmarshalInfo, name string) unmarshaler {
|
|
return func(b []byte, f pointer, w int) ([]byte, error) {
|
|
if w != WireBytes {
|
|
return b, errInternalBadWireType
|
|
}
|
|
x, n := decodeVarint(b)
|
|
if n == 0 {
|
|
return nil, io.ErrUnexpectedEOF
|
|
}
|
|
b = b[n:]
|
|
if x > uint64(len(b)) {
|
|
return nil, io.ErrUnexpectedEOF
|
|
}
|
|
// First read the message field to see if something is there.
|
|
// The semantics of multiple submessages are weird. Instead of
|
|
// the last one winning (as it is for all other fields), multiple
|
|
// submessages are merged.
|
|
v := f.getPointer()
|
|
if v.isNil() {
|
|
v = valToPointer(reflect.New(sub.typ))
|
|
f.setPointer(v)
|
|
}
|
|
err := sub.unmarshal(v, b[:x])
|
|
if err != nil {
|
|
if r, ok := err.(*RequiredNotSetError); ok {
|
|
r.field = name + "." + r.field
|
|
} else {
|
|
return nil, err
|
|
}
|
|
}
|
|
return b[x:], err
|
|
}
|
|
}
|
|
|
|
func makeUnmarshalMessageSlicePtr(sub *unmarshalInfo, name string) unmarshaler {
|
|
return func(b []byte, f pointer, w int) ([]byte, error) {
|
|
if w != WireBytes {
|
|
return b, errInternalBadWireType
|
|
}
|
|
x, n := decodeVarint(b)
|
|
if n == 0 {
|
|
return nil, io.ErrUnexpectedEOF
|
|
}
|
|
b = b[n:]
|
|
if x > uint64(len(b)) {
|
|
return nil, io.ErrUnexpectedEOF
|
|
}
|
|
v := valToPointer(reflect.New(sub.typ))
|
|
err := sub.unmarshal(v, b[:x])
|
|
if err != nil {
|
|
if r, ok := err.(*RequiredNotSetError); ok {
|
|
r.field = name + "." + r.field
|
|
} else {
|
|
return nil, err
|
|
}
|
|
}
|
|
f.appendPointer(v)
|
|
return b[x:], err
|
|
}
|
|
}
|
|
|
|
func makeUnmarshalGroupPtr(sub *unmarshalInfo, name string) unmarshaler {
|
|
return func(b []byte, f pointer, w int) ([]byte, error) {
|
|
if w != WireStartGroup {
|
|
return b, errInternalBadWireType
|
|
}
|
|
x, y := findEndGroup(b)
|
|
if x < 0 {
|
|
return nil, io.ErrUnexpectedEOF
|
|
}
|
|
v := f.getPointer()
|
|
if v.isNil() {
|
|
v = valToPointer(reflect.New(sub.typ))
|
|
f.setPointer(v)
|
|
}
|
|
err := sub.unmarshal(v, b[:x])
|
|
if err != nil {
|
|
if r, ok := err.(*RequiredNotSetError); ok {
|
|
r.field = name + "." + r.field
|
|
} else {
|
|
return nil, err
|
|
}
|
|
}
|
|
return b[y:], err
|
|
}
|
|
}
|
|
|
|
func makeUnmarshalGroupSlicePtr(sub *unmarshalInfo, name string) unmarshaler {
|
|
return func(b []byte, f pointer, w int) ([]byte, error) {
|
|
if w != WireStartGroup {
|
|
return b, errInternalBadWireType
|
|
}
|
|
x, y := findEndGroup(b)
|
|
if x < 0 {
|
|
return nil, io.ErrUnexpectedEOF
|
|
}
|
|
v := valToPointer(reflect.New(sub.typ))
|
|
err := sub.unmarshal(v, b[:x])
|
|
if err != nil {
|
|
if r, ok := err.(*RequiredNotSetError); ok {
|
|
r.field = name + "." + r.field
|
|
} else {
|
|
return nil, err
|
|
}
|
|
}
|
|
f.appendPointer(v)
|
|
return b[y:], err
|
|
}
|
|
}
|
|
|
|
func makeUnmarshalMap(f *reflect.StructField) unmarshaler {
|
|
t := f.Type
|
|
kt := t.Key()
|
|
vt := t.Elem()
|
|
unmarshalKey := typeUnmarshaler(kt, f.Tag.Get("protobuf_key"))
|
|
unmarshalVal := typeUnmarshaler(vt, f.Tag.Get("protobuf_val"))
|
|
return func(b []byte, f pointer, w int) ([]byte, error) {
|
|
// The map entry is a submessage. Figure out how big it is.
|
|
if w != WireBytes {
|
|
return nil, fmt.Errorf("proto: bad wiretype for map field: got %d want %d", w, WireBytes)
|
|
}
|
|
x, n := decodeVarint(b)
|
|
if n == 0 {
|
|
return nil, io.ErrUnexpectedEOF
|
|
}
|
|
b = b[n:]
|
|
if x > uint64(len(b)) {
|
|
return nil, io.ErrUnexpectedEOF
|
|
}
|
|
r := b[x:] // unused data to return
|
|
b = b[:x] // data for map entry
|
|
|
|
// Note: we could use #keys * #values ~= 200 functions
|
|
// to do map decoding without reflection. Probably not worth it.
|
|
// Maps will be somewhat slow. Oh well.
|
|
|
|
// Read key and value from data.
|
|
var nerr nonFatal
|
|
k := reflect.New(kt)
|
|
v := reflect.New(vt)
|
|
for len(b) > 0 {
|
|
x, n := decodeVarint(b)
|
|
if n == 0 {
|
|
return nil, io.ErrUnexpectedEOF
|
|
}
|
|
wire := int(x) & 7
|
|
b = b[n:]
|
|
|
|
var err error
|
|
switch x >> 3 {
|
|
case 1:
|
|
b, err = unmarshalKey(b, valToPointer(k), wire)
|
|
case 2:
|
|
b, err = unmarshalVal(b, valToPointer(v), wire)
|
|
default:
|
|
err = errInternalBadWireType // skip unknown tag
|
|
}
|
|
|
|
if nerr.Merge(err) {
|
|
continue
|
|
}
|
|
if err != errInternalBadWireType {
|
|
return nil, err
|
|
}
|
|
|
|
// Skip past unknown fields.
|
|
b, err = skipField(b, wire)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
}
|
|
|
|
// Get map, allocate if needed.
|
|
m := f.asPointerTo(t).Elem() // an addressable map[K]T
|
|
if m.IsNil() {
|
|
m.Set(reflect.MakeMap(t))
|
|
}
|
|
|
|
// Insert into map.
|
|
m.SetMapIndex(k.Elem(), v.Elem())
|
|
|
|
return r, nerr.E
|
|
}
|
|
}
|
|
|
|
// makeUnmarshalOneof makes an unmarshaler for oneof fields.
|
|
// for:
|
|
// message Msg {
|
|
// oneof F {
|
|
// int64 X = 1;
|
|
// float64 Y = 2;
|
|
// }
|
|
// }
|
|
// typ is the type of the concrete entry for a oneof case (e.g. Msg_X).
|
|
// ityp is the interface type of the oneof field (e.g. isMsg_F).
|
|
// unmarshal is the unmarshaler for the base type of the oneof case (e.g. int64).
|
|
// Note that this function will be called once for each case in the oneof.
|
|
func makeUnmarshalOneof(typ, ityp reflect.Type, unmarshal unmarshaler) unmarshaler {
|
|
sf := typ.Field(0)
|
|
field0 := toField(&sf)
|
|
return func(b []byte, f pointer, w int) ([]byte, error) {
|
|
// Allocate holder for value.
|
|
v := reflect.New(typ)
|
|
|
|
// Unmarshal data into holder.
|
|
// We unmarshal into the first field of the holder object.
|
|
var err error
|
|
var nerr nonFatal
|
|
b, err = unmarshal(b, valToPointer(v).offset(field0), w)
|
|
if !nerr.Merge(err) {
|
|
return nil, err
|
|
}
|
|
|
|
// Write pointer to holder into target field.
|
|
f.asPointerTo(ityp).Elem().Set(v)
|
|
|
|
return b, nerr.E
|
|
}
|
|
}
|
|
|
|
// Error used by decode internally.
|
|
var errInternalBadWireType = errors.New("proto: internal error: bad wiretype")
|
|
|
|
// skipField skips past a field of type wire and returns the remaining bytes.
|
|
func skipField(b []byte, wire int) ([]byte, error) {
|
|
switch wire {
|
|
case WireVarint:
|
|
_, k := decodeVarint(b)
|
|
if k == 0 {
|
|
return b, io.ErrUnexpectedEOF
|
|
}
|
|
b = b[k:]
|
|
case WireFixed32:
|
|
if len(b) < 4 {
|
|
return b, io.ErrUnexpectedEOF
|
|
}
|
|
b = b[4:]
|
|
case WireFixed64:
|
|
if len(b) < 8 {
|
|
return b, io.ErrUnexpectedEOF
|
|
}
|
|
b = b[8:]
|
|
case WireBytes:
|
|
m, k := decodeVarint(b)
|
|
if k == 0 || uint64(len(b)-k) < m {
|
|
return b, io.ErrUnexpectedEOF
|
|
}
|
|
b = b[uint64(k)+m:]
|
|
case WireStartGroup:
|
|
_, i := findEndGroup(b)
|
|
if i == -1 {
|
|
return b, io.ErrUnexpectedEOF
|
|
}
|
|
b = b[i:]
|
|
default:
|
|
return b, fmt.Errorf("proto: can't skip unknown wire type %d", wire)
|
|
}
|
|
return b, nil
|
|
}
|
|
|
|
// findEndGroup finds the index of the next EndGroup tag.
|
|
// Groups may be nested, so the "next" EndGroup tag is the first
|
|
// unpaired EndGroup.
|
|
// findEndGroup returns the indexes of the start and end of the EndGroup tag.
|
|
// Returns (-1,-1) if it can't find one.
|
|
func findEndGroup(b []byte) (int, int) {
|
|
depth := 1
|
|
i := 0
|
|
for {
|
|
x, n := decodeVarint(b[i:])
|
|
if n == 0 {
|
|
return -1, -1
|
|
}
|
|
j := i
|
|
i += n
|
|
switch x & 7 {
|
|
case WireVarint:
|
|
_, k := decodeVarint(b[i:])
|
|
if k == 0 {
|
|
return -1, -1
|
|
}
|
|
i += k
|
|
case WireFixed32:
|
|
if len(b)-4 < i {
|
|
return -1, -1
|
|
}
|
|
i += 4
|
|
case WireFixed64:
|
|
if len(b)-8 < i {
|
|
return -1, -1
|
|
}
|
|
i += 8
|
|
case WireBytes:
|
|
m, k := decodeVarint(b[i:])
|
|
if k == 0 {
|
|
return -1, -1
|
|
}
|
|
i += k
|
|
if uint64(len(b)-i) < m {
|
|
return -1, -1
|
|
}
|
|
i += int(m)
|
|
case WireStartGroup:
|
|
depth++
|
|
case WireEndGroup:
|
|
depth--
|
|
if depth == 0 {
|
|
return j, i
|
|
}
|
|
default:
|
|
return -1, -1
|
|
}
|
|
}
|
|
}
|
|
|
|
// encodeVarint appends a varint-encoded integer to b and returns the result.
|
|
func encodeVarint(b []byte, x uint64) []byte {
|
|
for x >= 1<<7 {
|
|
b = append(b, byte(x&0x7f|0x80))
|
|
x >>= 7
|
|
}
|
|
return append(b, byte(x))
|
|
}
|
|
|
|
// decodeVarint reads a varint-encoded integer from b.
|
|
// Returns the decoded integer and the number of bytes read.
|
|
// If there is an error, it returns 0,0.
|
|
func decodeVarint(b []byte) (uint64, int) {
|
|
var x, y uint64
|
|
if len(b) <= 0 {
|
|
goto bad
|
|
}
|
|
x = uint64(b[0])
|
|
if x < 0x80 {
|
|
return x, 1
|
|
}
|
|
x -= 0x80
|
|
|
|
if len(b) <= 1 {
|
|
goto bad
|
|
}
|
|
y = uint64(b[1])
|
|
x += y << 7
|
|
if y < 0x80 {
|
|
return x, 2
|
|
}
|
|
x -= 0x80 << 7
|
|
|
|
if len(b) <= 2 {
|
|
goto bad
|
|
}
|
|
y = uint64(b[2])
|
|
x += y << 14
|
|
if y < 0x80 {
|
|
return x, 3
|
|
}
|
|
x -= 0x80 << 14
|
|
|
|
if len(b) <= 3 {
|
|
goto bad
|
|
}
|
|
y = uint64(b[3])
|
|
x += y << 21
|
|
if y < 0x80 {
|
|
return x, 4
|
|
}
|
|
x -= 0x80 << 21
|
|
|
|
if len(b) <= 4 {
|
|
goto bad
|
|
}
|
|
y = uint64(b[4])
|
|
x += y << 28
|
|
if y < 0x80 {
|
|
return x, 5
|
|
}
|
|
x -= 0x80 << 28
|
|
|
|
if len(b) <= 5 {
|
|
goto bad
|
|
}
|
|
y = uint64(b[5])
|
|
x += y << 35
|
|
if y < 0x80 {
|
|
return x, 6
|
|
}
|
|
x -= 0x80 << 35
|
|
|
|
if len(b) <= 6 {
|
|
goto bad
|
|
}
|
|
y = uint64(b[6])
|
|
x += y << 42
|
|
if y < 0x80 {
|
|
return x, 7
|
|
}
|
|
x -= 0x80 << 42
|
|
|
|
if len(b) <= 7 {
|
|
goto bad
|
|
}
|
|
y = uint64(b[7])
|
|
x += y << 49
|
|
if y < 0x80 {
|
|
return x, 8
|
|
}
|
|
x -= 0x80 << 49
|
|
|
|
if len(b) <= 8 {
|
|
goto bad
|
|
}
|
|
y = uint64(b[8])
|
|
x += y << 56
|
|
if y < 0x80 {
|
|
return x, 9
|
|
}
|
|
x -= 0x80 << 56
|
|
|
|
if len(b) <= 9 {
|
|
goto bad
|
|
}
|
|
y = uint64(b[9])
|
|
x += y << 63
|
|
if y < 2 {
|
|
return x, 10
|
|
}
|
|
|
|
bad:
|
|
return 0, 0
|
|
}
|