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unmarshal.go
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/
unmarshal.go
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// MIT License
//
// Copyright (c) 2020 The vine Authors
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
// SOFTWARE.
/*
The unmarshal plugin generates a Unmarshal method for each message.
The `Unmarshal([]byte) error` method results in the fact that the message
implements the Unmarshaler interface.
The allows proto.Unmarshal to be faster by calling the generated Unmarshal method rather than using reflect.
If is enabled by the following extensions:
- unmarshaler
- unmarshaler_all
Or the following extensions:
- unsafe_unmarshaler
- unsafe_unmarshaler_all
That is if you want to use the unsafe package in your generated code.
The speed up using the unsafe package is not very significant.
The generation of unmarshalling tests are enabled using one of the following extensions:
- testgen
- testgen_all
And benchmarks given it is enabled using one of the following extensions:
- benchgen
- benchgen_all
Let us look at:
github.com/gogo/protobuf/test/example/example.proto
Btw all the output can be seen at:
github.com/gogo/protobuf/test/example/*
The following message:
option (gogoproto.unmarshaler_all) = true;
message B {
option (gogoproto.description) = true;
optional A A = 1 [(gogoproto.nullable) = false, (gogoproto.embed) = true];
repeated bytes G = 2 [(gogoproto.customtype) = "github.com/gogo/protobuf/test/custom.Uint128", (gogoproto.nullable) = false];
}
given to the unmarshal plugin, will generate the following code:
func (m *B) Unmarshal(dAtA []byte) error {
l := len(dAtA)
iNdEx := 0
for iNdEx < l {
var wire uint64
for shift := uint(0); ; shift += 7 {
if iNdEx >= l {
return io.ErrUnexpectedEOF
}
b := dAtA[iNdEx]
iNdEx++
wire |= (uint64(b) & 0x7F) << shift
if b < 0x80 {
break
}
}
fieldNum := int32(wire >> 3)
wireType := int(wire & 0x7)
switch fieldNum {
case 1:
if wireType != 2 {
return proto.ErrWrongType
}
var msglen int
for shift := uint(0); ; shift += 7 {
if iNdEx >= l {
return io.ErrUnexpectedEOF
}
b := dAtA[iNdEx]
iNdEx++
msglen |= (int(b) & 0x7F) << shift
if b < 0x80 {
break
}
}
postIndex := iNdEx + msglen
if postIndex > l {
return io.ErrUnexpectedEOF
}
if err := m.A.Unmarshal(dAtA[iNdEx:postIndex]); err != nil {
return err
}
iNdEx = postIndex
case 2:
if wireType != 2 {
return proto.ErrWrongType
}
var byteLen int
for shift := uint(0); ; shift += 7 {
if iNdEx >= l {
return io.ErrUnexpectedEOF
}
b := dAtA[iNdEx]
iNdEx++
byteLen |= (int(b) & 0x7F) << shift
if b < 0x80 {
break
}
}
postIndex := iNdEx + byteLen
if postIndex > l {
return io.ErrUnexpectedEOF
}
m.G = append(m.G, github_com_gogo_protobuf_test_custom.Uint128{})
if err := m.G[len(m.G)-1].Unmarshal(dAtA[iNdEx:postIndex]); err != nil {
return err
}
iNdEx = postIndex
default:
var sizeOfWire int
for {
sizeOfWire++
wire >>= 7
if wire == 0 {
break
}
}
iNdEx -= sizeOfWire
skippy, err := skip(dAtA[iNdEx:])
if err != nil {
return err
}
if (iNdEx + skippy) > l {
return io.ErrUnexpectedEOF
}
m.XXX_unrecognized = append(m.XXX_unrecognized, dAtA[iNdEx:iNdEx+skippy]...)
iNdEx += skippy
}
}
return nil
}
Remember when using this code to call proto.Unmarshal.
This will call m.Reset and invoke the generated Unmarshal method for you.
If you call m.Unmarshal without m.Reset you could be merging protocol buffers.
*/
package gogo
import (
"fmt"
"strconv"
"strings"
"github.com/gogo/protobuf/gogoproto"
"github.com/gogo/protobuf/proto"
"github.com/gogo/protobuf/protoc-gen-gogo/descriptor"
"github.com/vine-io/vine/cmd/generator"
)
func (g *gogo) decodeVarint(varName string, typName string) {
g.P(`for shift := uint(0); ; shift += 7 {`)
g.In()
g.P(`if shift >= 64 {`)
g.In()
g.P(`return ErrIntOverflow` + g.localName)
g.Out()
g.P(`}`)
g.P(`if iNdEx >= l {`)
g.In()
g.P(`return `, g.ioPkg.Use(), `.ErrUnexpectedEOF`)
g.Out()
g.P(`}`)
g.P(`b := dAtA[iNdEx]`)
g.P(`iNdEx++`)
g.P(varName, ` |= `, typName, `(b&0x7F) << shift`)
g.P(`if b < 0x80 {`)
g.In()
g.P(`break`)
g.Out()
g.P(`}`)
g.Out()
g.P(`}`)
}
func (g *gogo) decodeFixed32(varName string, typeName string) {
g.P(`if (iNdEx+4) > l {`)
g.In()
g.P(`return `, g.ioPkg.Use(), `.ErrUnexpectedEOF`)
g.Out()
g.P(`}`)
g.P(varName, ` = `, typeName, `(`, g.binaryPkg.Use(), `.LittleEndian.Uint32(dAtA[iNdEx:]))`)
g.P(`iNdEx += 4`)
}
func (g *gogo) decodeFixed64(varName string, typeName string) {
g.P(`if (iNdEx+8) > l {`)
g.In()
g.P(`return `, g.ioPkg.Use(), `.ErrUnexpectedEOF`)
g.Out()
g.P(`}`)
g.P(varName, ` = `, typeName, `(`, g.binaryPkg.Use(), `.LittleEndian.Uint64(dAtA[iNdEx:]))`)
g.P(`iNdEx += 8`)
}
func (g *gogo) declareMapField(varName string, nullable bool, customType bool, field *descriptor.FieldDescriptorProto) {
switch field.GetType() {
case descriptor.FieldDescriptorProto_TYPE_DOUBLE:
g.P(`var `, varName, ` float64`)
case descriptor.FieldDescriptorProto_TYPE_FLOAT:
g.P(`var `, varName, ` float32`)
case descriptor.FieldDescriptorProto_TYPE_INT64:
g.P(`var `, varName, ` int64`)
case descriptor.FieldDescriptorProto_TYPE_UINT64:
g.P(`var `, varName, ` uint64`)
case descriptor.FieldDescriptorProto_TYPE_INT32:
g.P(`var `, varName, ` int32`)
case descriptor.FieldDescriptorProto_TYPE_FIXED64:
g.P(`var `, varName, ` uint64`)
case descriptor.FieldDescriptorProto_TYPE_FIXED32:
g.P(`var `, varName, ` uint32`)
case descriptor.FieldDescriptorProto_TYPE_BOOL:
g.P(`var `, varName, ` bool`)
case descriptor.FieldDescriptorProto_TYPE_STRING:
cast, _ := g.GoType(nil, field)
cast = strings.Replace(cast, "*", "", 1)
g.P(`var `, varName, ` `, cast)
case descriptor.FieldDescriptorProto_TYPE_MESSAGE:
if gogoproto.IsStdTime(field) {
g.P(varName, ` := new(time.Time)`)
} else if gogoproto.IsStdDuration(field) {
g.P(varName, ` := new(time.Duration)`)
} else if gogoproto.IsStdDouble(field) {
g.P(varName, ` := new(float64)`)
} else if gogoproto.IsStdFloat(field) {
g.P(varName, ` := new(float32)`)
} else if gogoproto.IsStdInt64(field) {
g.P(varName, ` := new(int64)`)
} else if gogoproto.IsStdUInt64(field) {
g.P(varName, ` := new(uint64)`)
} else if gogoproto.IsStdInt32(field) {
g.P(varName, ` := new(int32)`)
} else if gogoproto.IsStdUInt32(field) {
g.P(varName, ` := new(uint32)`)
} else if gogoproto.IsStdBool(field) {
g.P(varName, ` := new(bool)`)
} else if gogoproto.IsStdString(field) {
g.P(varName, ` := new(string)`)
} else if gogoproto.IsStdBytes(field) {
g.P(varName, ` := new([]byte)`)
} else {
desc := g.ObjectNamed(field.GetTypeName())
msgname := g.TypeName(desc)
if nullable {
g.P(`var `, varName, ` *`, msgname)
} else {
g.P(varName, ` := &`, msgname, `{}`)
}
}
case descriptor.FieldDescriptorProto_TYPE_BYTES:
if customType {
_, ctyp, err := generator.GetCustomType(field)
if err != nil {
panic(err)
}
g.P(`var `, varName, `1 `, ctyp)
g.P(`var `, varName, ` = &`, varName, `1`)
} else {
g.P(varName, ` := []byte{}`)
}
case descriptor.FieldDescriptorProto_TYPE_UINT32:
g.P(`var `, varName, ` uint32`)
case descriptor.FieldDescriptorProto_TYPE_ENUM:
typName := g.TypeName(g.ObjectNamed(field.GetTypeName()))
g.P(`var `, varName, ` `, typName)
case descriptor.FieldDescriptorProto_TYPE_SFIXED32:
g.P(`var `, varName, ` int32`)
case descriptor.FieldDescriptorProto_TYPE_SFIXED64:
g.P(`var `, varName, ` int64`)
case descriptor.FieldDescriptorProto_TYPE_SINT32:
g.P(`var `, varName, ` int32`)
case descriptor.FieldDescriptorProto_TYPE_SINT64:
g.P(`var `, varName, ` int64`)
}
}
func (g *gogo) mapUnmarshalField(varName string, customType bool, field *descriptor.FieldDescriptorProto) {
switch field.GetType() {
case descriptor.FieldDescriptorProto_TYPE_DOUBLE:
g.P(`var `, varName, `temp uint64`)
g.decodeFixed64(varName+"temp", "uint64")
g.P(varName, ` = `, g.mathPkg.Use(), `.Float64frombits(`, varName, `temp)`)
case descriptor.FieldDescriptorProto_TYPE_FLOAT:
g.P(`var `, varName, `temp uint32`)
g.decodeFixed32(varName+"temp", "uint32")
g.P(varName, ` = `, g.mathPkg.Use(), `.Float32frombits(`, varName, `temp)`)
case descriptor.FieldDescriptorProto_TYPE_INT64:
g.decodeVarint(varName, "int64")
case descriptor.FieldDescriptorProto_TYPE_UINT64:
g.decodeVarint(varName, "uint64")
case descriptor.FieldDescriptorProto_TYPE_INT32:
g.decodeVarint(varName, "int32")
case descriptor.FieldDescriptorProto_TYPE_FIXED64:
g.decodeFixed64(varName, "uint64")
case descriptor.FieldDescriptorProto_TYPE_FIXED32:
g.decodeFixed32(varName, "uint32")
case descriptor.FieldDescriptorProto_TYPE_BOOL:
g.P(`var `, varName, `temp int`)
g.decodeVarint(varName+"temp", "int")
g.P(varName, ` = bool(`, varName, `temp != 0)`)
case descriptor.FieldDescriptorProto_TYPE_STRING:
g.P(`var stringLen`, varName, ` uint64`)
g.decodeVarint("stringLen"+varName, "uint64")
g.P(`intStringLen`, varName, ` := int(stringLen`, varName, `)`)
g.P(`if intStringLen`, varName, ` < 0 {`)
g.In()
g.P(`return ErrInvalidLength` + g.localName)
g.Out()
g.P(`}`)
g.P(`postStringIndex`, varName, ` := iNdEx + intStringLen`, varName)
g.P(`if postStringIndex`, varName, ` < 0 {`)
g.In()
g.P(`return ErrInvalidLength` + g.localName)
g.Out()
g.P(`}`)
g.P(`if postStringIndex`, varName, ` > l {`)
g.In()
g.P(`return `, g.ioPkg.Use(), `.ErrUnexpectedEOF`)
g.Out()
g.P(`}`)
cast, _ := g.GoType(nil, field)
cast = strings.Replace(cast, "*", "", 1)
g.P(varName, ` = `, cast, `(dAtA[iNdEx:postStringIndex`, varName, `])`)
g.P(`iNdEx = postStringIndex`, varName)
case descriptor.FieldDescriptorProto_TYPE_MESSAGE:
g.P(`var mapmsglen int`)
g.decodeVarint("mapmsglen", "int")
g.P(`if mapmsglen < 0 {`)
g.In()
g.P(`return ErrInvalidLength` + g.localName)
g.Out()
g.P(`}`)
g.P(`postmsgIndex := iNdEx + mapmsglen`)
g.P(`if postmsgIndex < 0 {`)
g.In()
g.P(`return ErrInvalidLength` + g.localName)
g.Out()
g.P(`}`)
g.P(`if postmsgIndex > l {`)
g.In()
g.P(`return `, g.ioPkg.Use(), `.ErrUnexpectedEOF`)
g.Out()
g.P(`}`)
buf := `dAtA[iNdEx:postmsgIndex]`
if gogoproto.IsStdTime(field) {
g.P(`if err := `, g.typesPkg.Use(), `.StdTimeUnmarshal(`, varName, `, `, buf, `); err != nil {`)
} else if gogoproto.IsStdDuration(field) {
g.P(`if err := `, g.typesPkg.Use(), `.StdDurationUnmarshal(`, varName, `, `, buf, `); err != nil {`)
} else if gogoproto.IsStdDouble(field) {
g.P(`if err := `, g.typesPkg.Use(), `.StdDoubleUnmarshal(`, varName, `, `, buf, `); err != nil {`)
} else if gogoproto.IsStdFloat(field) {
g.P(`if err := `, g.typesPkg.Use(), `.StdFloatUnmarshal(`, varName, `, `, buf, `); err != nil {`)
} else if gogoproto.IsStdInt64(field) {
g.P(`if err := `, g.typesPkg.Use(), `.StdInt64Unmarshal(`, varName, `, `, buf, `); err != nil {`)
} else if gogoproto.IsStdUInt64(field) {
g.P(`if err := `, g.typesPkg.Use(), `.StdUInt64Unmarshal(`, varName, `, `, buf, `); err != nil {`)
} else if gogoproto.IsStdInt32(field) {
g.P(`if err := `, g.typesPkg.Use(), `.StdInt32Unmarshal(`, varName, `, `, buf, `); err != nil {`)
} else if gogoproto.IsStdUInt32(field) {
g.P(`if err := `, g.typesPkg.Use(), `.StdUInt32Unmarshal(`, varName, `, `, buf, `); err != nil {`)
} else if gogoproto.IsStdBool(field) {
g.P(`if err := `, g.typesPkg.Use(), `.StdBoolUnmarshal(`, varName, `, `, buf, `); err != nil {`)
} else if gogoproto.IsStdString(field) {
g.P(`if err := `, g.typesPkg.Use(), `.StdStringUnmarshal(`, varName, `, `, buf, `); err != nil {`)
} else if gogoproto.IsStdBytes(field) {
g.P(`if err := `, g.typesPkg.Use(), `.StdBytesUnmarshal(`, varName, `, `, buf, `); err != nil {`)
} else {
desc := g.ObjectNamed(field.GetTypeName())
msgname := g.TypeName(desc)
g.P(varName, ` = &`, msgname, `{}`)
g.P(`if err := `, varName, `.Unmarshal(`, buf, `); err != nil {`)
}
g.In()
g.P(`return err`)
g.Out()
g.P(`}`)
g.P(`iNdEx = postmsgIndex`)
case descriptor.FieldDescriptorProto_TYPE_BYTES:
g.P(`var mapbyteLen uint64`)
g.decodeVarint("mapbyteLen", "uint64")
g.P(`intMapbyteLen := int(mapbyteLen)`)
g.P(`if intMapbyteLen < 0 {`)
g.In()
g.P(`return ErrInvalidLength` + g.localName)
g.Out()
g.P(`}`)
g.P(`postbytesIndex := iNdEx + intMapbyteLen`)
g.P(`if postbytesIndex < 0 {`)
g.In()
g.P(`return ErrInvalidLength` + g.localName)
g.Out()
g.P(`}`)
g.P(`if postbytesIndex > l {`)
g.In()
g.P(`return `, g.ioPkg.Use(), `.ErrUnexpectedEOF`)
g.Out()
g.P(`}`)
if customType {
g.P(`if err := `, varName, `.Unmarshal(dAtA[iNdEx:postbytesIndex]); err != nil {`)
g.In()
g.P(`return err`)
g.Out()
g.P(`}`)
} else {
g.P(varName, ` = make([]byte, mapbyteLen)`)
g.P(`copy(`, varName, `, dAtA[iNdEx:postbytesIndex])`)
}
g.P(`iNdEx = postbytesIndex`)
case descriptor.FieldDescriptorProto_TYPE_UINT32:
g.decodeVarint(varName, "uint32")
case descriptor.FieldDescriptorProto_TYPE_ENUM:
typName := g.TypeName(g.ObjectNamed(field.GetTypeName()))
g.decodeVarint(varName, typName)
case descriptor.FieldDescriptorProto_TYPE_SFIXED32:
g.decodeFixed32(varName, "int32")
case descriptor.FieldDescriptorProto_TYPE_SFIXED64:
g.decodeFixed64(varName, "int64")
case descriptor.FieldDescriptorProto_TYPE_SINT32:
g.P(`var `, varName, `temp int32`)
g.decodeVarint(varName+"temp", "int32")
g.P(varName, `temp = int32((uint32(`, varName, `temp) >> 1) ^ uint32(((`, varName, `temp&1)<<31)>>31))`)
g.P(varName, ` = int32(`, varName, `temp)`)
case descriptor.FieldDescriptorProto_TYPE_SINT64:
g.P(`var `, varName, `temp uint64`)
g.decodeVarint(varName+"temp", "uint64")
g.P(varName, `temp = (`, varName, `temp >> 1) ^ uint64((int64(`, varName, `temp&1)<<63)>>63)`)
g.P(varName, ` = int64(`, varName, `temp)`)
}
}
func (g *gogo) noStarOrSliceType(msg *generator.Descriptor, field *descriptor.FieldDescriptorProto) string {
typ, _ := g.GoType(msg, field)
if typ[0] == '*' {
return typ[1:]
}
if typ[0] == '[' && typ[1] == ']' {
return typ[2:]
}
return typ
}
func (g *gogo) field(file *generator.FileDescriptor, msg *generator.MessageDescriptor, f *generator.FieldDescriptor, fieldname string, proto3 bool) {
field := f.Proto
repeated := field.IsRepeated()
nullable := gogoproto.IsNullable(field)
typ := g.noStarOrSliceType(msg.Proto, field)
oneof := field.OneofIndex != nil
_, isInline := g.extractTags(f.Comments)[_inline]
switch *field.Type {
case descriptor.FieldDescriptorProto_TYPE_DOUBLE:
g.P(`var v uint64`)
g.decodeFixed64("v", "uint64")
if oneof {
g.P(`m.`, fieldname, ` = &`, g.OneOfTypeName(msg, f), `{`, typ, "(", g.mathPkg.Use(), `.Float64frombits(v))}`)
} else if repeated {
g.P(`v2 := `, typ, "(", g.mathPkg.Use(), `.Float64frombits(v))`)
g.P(`m.`, fieldname, ` = append(m.`, fieldname, `, v2)`)
} else if proto3 || !nullable {
g.P(`m.`, fieldname, ` = `, typ, "(", g.mathPkg.Use(), `.Float64frombits(v))`)
} else {
g.P(`v2 := `, typ, "(", g.mathPkg.Use(), `.Float64frombits(v))`)
g.P(`m.`, fieldname, ` = &v2`)
}
case descriptor.FieldDescriptorProto_TYPE_FLOAT:
g.P(`var v uint32`)
g.decodeFixed32("v", "uint32")
if oneof {
g.P(`m.`, fieldname, ` = &`, g.OneOfTypeName(msg, f), `{`, typ, "(", g.mathPkg.Use(), `.Float32frombits(v))}`)
} else if repeated {
g.P(`v2 := `, typ, "(", g.mathPkg.Use(), `.Float32frombits(v))`)
g.P(`m.`, fieldname, ` = append(m.`, fieldname, `, v2)`)
} else if proto3 || !nullable {
g.P(`m.`, fieldname, ` = `, typ, "(", g.mathPkg.Use(), `.Float32frombits(v))`)
} else {
g.P(`v2 := `, typ, "(", g.mathPkg.Use(), `.Float32frombits(v))`)
g.P(`m.`, fieldname, ` = &v2`)
}
case descriptor.FieldDescriptorProto_TYPE_INT64:
if oneof {
g.P(`var v `, typ)
g.decodeVarint("v", typ)
g.P(`m.`, fieldname, ` = &`, g.OneOfTypeName(msg, f), `{v}`)
} else if repeated {
g.P(`var v `, typ)
g.decodeVarint("v", typ)
g.P(`m.`, fieldname, ` = append(m.`, fieldname, `, v)`)
} else if proto3 || !nullable {
g.P(`m.`, fieldname, ` = 0`)
g.decodeVarint("m."+fieldname, typ)
} else {
g.P(`var v `, typ)
g.decodeVarint("v", typ)
g.P(`m.`, fieldname, ` = &v`)
}
case descriptor.FieldDescriptorProto_TYPE_UINT64:
if oneof {
g.P(`var v `, typ)
g.decodeVarint("v", typ)
g.P(`m.`, fieldname, ` = &`, g.OneOfTypeName(msg, f), `{v}`)
} else if repeated {
g.P(`var v `, typ)
g.decodeVarint("v", typ)
g.P(`m.`, fieldname, ` = append(m.`, fieldname, `, v)`)
} else if proto3 || !nullable {
g.P(`m.`, fieldname, ` = 0`)
g.decodeVarint("m."+fieldname, typ)
} else {
g.P(`var v `, typ)
g.decodeVarint("v", typ)
g.P(`m.`, fieldname, ` = &v`)
}
case descriptor.FieldDescriptorProto_TYPE_INT32:
if oneof {
g.P(`var v `, typ)
g.decodeVarint("v", typ)
g.P(`m.`, fieldname, ` = &`, g.OneOfTypeName(msg, f), `{v}`)
} else if repeated {
g.P(`var v `, typ)
g.decodeVarint("v", typ)
g.P(`m.`, fieldname, ` = append(m.`, fieldname, `, v)`)
} else if proto3 || !nullable {
g.P(`m.`, fieldname, ` = 0`)
g.decodeVarint("m."+fieldname, typ)
} else {
g.P(`var v `, typ)
g.decodeVarint("v", typ)
g.P(`m.`, fieldname, ` = &v`)
}
case descriptor.FieldDescriptorProto_TYPE_FIXED64:
if oneof {
g.P(`var v `, typ)
g.decodeFixed64("v", typ)
g.P(`m.`, fieldname, ` = &`, g.OneOfTypeName(msg, f), `{v}`)
} else if repeated {
g.P(`var v `, typ)
g.decodeFixed64("v", typ)
g.P(`m.`, fieldname, ` = append(m.`, fieldname, `, v)`)
} else if proto3 || !nullable {
g.P(`m.`, fieldname, ` = 0`)
g.decodeFixed64("m."+fieldname, typ)
} else {
g.P(`var v `, typ)
g.decodeFixed64("v", typ)
g.P(`m.`, fieldname, ` = &v`)
}
case descriptor.FieldDescriptorProto_TYPE_FIXED32:
if oneof {
g.P(`var v `, typ)
g.decodeFixed32("v", typ)
g.P(`m.`, fieldname, ` = &`, g.OneOfTypeName(msg, f), `{v}`)
} else if repeated {
g.P(`var v `, typ)
g.decodeFixed32("v", typ)
g.P(`m.`, fieldname, ` = append(m.`, fieldname, `, v)`)
} else if proto3 || !nullable {
g.P(`m.`, fieldname, ` = 0`)
g.decodeFixed32("m."+fieldname, typ)
} else {
g.P(`var v `, typ)
g.decodeFixed32("v", typ)
g.P(`m.`, fieldname, ` = &v`)
}
case descriptor.FieldDescriptorProto_TYPE_BOOL:
g.P(`var v int`)
g.decodeVarint("v", "int")
if oneof {
g.P(`b := `, typ, `(v != 0)`)
g.P(`m.`, fieldname, ` = &`, g.OneOfTypeName(msg, f), `{b}`)
} else if repeated {
g.P(`m.`, fieldname, ` = append(m.`, fieldname, `, `, typ, `(v != 0))`)
} else if proto3 || !nullable {
g.P(`m.`, fieldname, ` = `, typ, `(v != 0)`)
} else {
g.P(`b := `, typ, `(v != 0)`)
g.P(`m.`, fieldname, ` = &b`)
}
case descriptor.FieldDescriptorProto_TYPE_STRING:
g.P(`var stringLen uint64`)
g.decodeVarint("stringLen", "uint64")
g.P(`intStringLen := int(stringLen)`)
g.P(`if intStringLen < 0 {`)
g.In()
g.P(`return ErrInvalidLength` + g.localName)
g.Out()
g.P(`}`)
g.P(`postIndex := iNdEx + intStringLen`)
g.P(`if postIndex < 0 {`)
g.In()
g.P(`return ErrInvalidLength` + g.localName)
g.Out()
g.P(`}`)
g.P(`if postIndex > l {`)
g.In()
g.P(`return `, g.ioPkg.Use(), `.ErrUnexpectedEOF`)
g.Out()
g.P(`}`)
if oneof {
g.P(`m.`, fieldname, ` = &`, g.OneOfTypeName(msg, f), `{`, typ, `(dAtA[iNdEx:postIndex])}`)
} else if repeated {
g.P(`m.`, fieldname, ` = append(m.`, fieldname, `, `, typ, `(dAtA[iNdEx:postIndex]))`)
} else if proto3 || !nullable {
g.P(`m.`, fieldname, ` = `, typ, `(dAtA[iNdEx:postIndex])`)
} else {
g.P(`s := `, typ, `(dAtA[iNdEx:postIndex])`)
g.P(`m.`, fieldname, ` = &s`)
}
g.P(`iNdEx = postIndex`)
case descriptor.FieldDescriptorProto_TYPE_GROUP:
panic(fmt.Errorf("unmarshaler does not support group %v", fieldname))
case descriptor.FieldDescriptorProto_TYPE_MESSAGE:
desc := g.ObjectNamed(field.GetTypeName())
msgname := g.TypeName(desc)
g.P(`var msglen int`)
g.decodeVarint("msglen", "int")
g.P(`if msglen < 0 {`)
g.In()
g.P(`return ErrInvalidLength` + g.localName)
g.Out()
g.P(`}`)
g.P(`postIndex := iNdEx + msglen`)
g.P(`if postIndex < 0 {`)
g.In()
g.P(`return ErrInvalidLength` + g.localName)
g.Out()
g.P(`}`)
g.P(`if postIndex > l {`)
g.In()
g.P(`return `, g.ioPkg.Use(), `.ErrUnexpectedEOF`)
g.Out()
g.P(`}`)
if oneof {
buf := `dAtA[iNdEx:postIndex]`
if gogoproto.IsStdTime(field) {
if nullable {
g.P(`v := new(time.Time)`)
g.P(`if err := `, g.typesPkg.Use(), `.StdTimeUnmarshal(v, `, buf, `); err != nil {`)
} else {
g.P(`v := time.Time{}`)
g.P(`if err := `, g.typesPkg.Use(), `.StdTimeUnmarshal(&v, `, buf, `); err != nil {`)
}
} else if gogoproto.IsStdDuration(field) {
if nullable {
g.P(`v := new(time.Duration)`)
g.P(`if err := `, g.typesPkg.Use(), `.StdDurationUnmarshal(v, `, buf, `); err != nil {`)
} else {
g.P(`v := time.Duration(0)`)
g.P(`if err := `, g.typesPkg.Use(), `.StdDurationUnmarshal(&v, `, buf, `); err != nil {`)
}
} else if gogoproto.IsStdDouble(field) {
if nullable {
g.P(`v := new(float64)`)
g.P(`if err := `, g.typesPkg.Use(), `.StdDoubleUnmarshal(v, `, buf, `); err != nil {`)
} else {
g.P(`v := 0`)
g.P(`if err := `, g.typesPkg.Use(), `.StdDoubleUnmarshal(&v, `, buf, `); err != nil {`)
}
} else if gogoproto.IsStdFloat(field) {
if nullable {
g.P(`v := new(float32)`)
g.P(`if err := `, g.typesPkg.Use(), `.StdFloatUnmarshal(v, `, buf, `); err != nil {`)
} else {
g.P(`v := 0`)
g.P(`if err := `, g.typesPkg.Use(), `.StdFloatUnmarshal(&v, `, buf, `); err != nil {`)
}
} else if gogoproto.IsStdInt64(field) {
if nullable {
g.P(`v := new(int64)`)
g.P(`if err := `, g.typesPkg.Use(), `.StdInt64Unmarshal(v, `, buf, `); err != nil {`)
} else {
g.P(`v := 0`)
g.P(`if err := `, g.typesPkg.Use(), `.StdInt64Unmarshal(&v, `, buf, `); err != nil {`)
}
} else if gogoproto.IsStdUInt64(field) {
if nullable {
g.P(`v := new(uint64)`)
g.P(`if err := `, g.typesPkg.Use(), `.StdUInt64Unmarshal(v, `, buf, `); err != nil {`)
} else {
g.P(`v := 0`)
g.P(`if err := `, g.typesPkg.Use(), `.StdUInt64Unmarshal(&v, `, buf, `); err != nil {`)
}
} else if gogoproto.IsStdInt32(field) {
if nullable {
g.P(`v := new(int32)`)
g.P(`if err := `, g.typesPkg.Use(), `.StdInt32Unmarshal(v, `, buf, `); err != nil {`)
} else {
g.P(`v := 0`)
g.P(`if err := `, g.typesPkg.Use(), `.StdInt32Unmarshal(&v, `, buf, `); err != nil {`)
}
} else if gogoproto.IsStdUInt32(field) {
if nullable {
g.P(`v := new(uint32)`)
g.P(`if err := `, g.typesPkg.Use(), `.StdUInt32Unmarshal(v, `, buf, `); err != nil {`)
} else {
g.P(`v := 0`)
g.P(`if err := `, g.typesPkg.Use(), `.StdUInt32Unmarshal(&v, `, buf, `); err != nil {`)
}
} else if gogoproto.IsStdBool(field) {
if nullable {
g.P(`v := new(bool)`)
g.P(`if err := `, g.typesPkg.Use(), `.StdBoolUnmarshal(v, `, buf, `); err != nil {`)
} else {
g.P(`v := false`)
g.P(`if err := `, g.typesPkg.Use(), `.StdBoolUnmarshal(&v, `, buf, `); err != nil {`)
}
} else if gogoproto.IsStdString(field) {
if nullable {
g.P(`v := new(string)`)
g.P(`if err := `, g.typesPkg.Use(), `.StdStringUnmarshal(v, `, buf, `); err != nil {`)
} else {
g.P(`v := ""`)
g.P(`if err := `, g.typesPkg.Use(), `.StdStringUnmarshal(&v, `, buf, `); err != nil {`)
}
} else if gogoproto.IsStdBytes(field) {
if nullable {
g.P(`v := new([]byte)`)
g.P(`if err := `, g.typesPkg.Use(), `.StdBytesUnmarshal(v, `, buf, `); err != nil {`)
} else {
g.P(`var v []byte`)
g.P(`if err := `, g.typesPkg.Use(), `.StdBytesUnmarshal(&v, `, buf, `); err != nil {`)
}
} else {
g.P(`v := &`, msgname, `{}`)
g.P(`if err := v.Unmarshal(`, buf, `); err != nil {`)
}
g.In()
g.P(`return err`)
g.Out()
g.P(`}`)
g.P(`m.`, fieldname, ` = &`, g.OneOfTypeName(msg, f), `{v}`)
} else if g.IsMap(field) {
m := g.GoMapType(nil, field)
keygoTyp, _ := g.GoType(nil, m.KeyField)
keygoAliasTyp, _ := g.GoType(nil, m.KeyAliasField)
// keys may not be pointers
keygoTyp = strings.Replace(keygoTyp, "*", "", 1)
keygoAliasTyp = strings.Replace(keygoAliasTyp, "*", "", 1)
valuegoTyp, _ := g.GoType(nil, m.ValueField)
valuegoAliasTyp, _ := g.GoType(nil, m.ValueAliasField)
// if the map type is an alias and key or values are aliases (type Foo map[Bar]Baz),
// we need to explicitly record their use here.
if gogoproto.IsCastKey(field) {
g.RecordTypeUse(m.KeyAliasField.GetTypeName())
}
if gogoproto.IsCastValue(field) {
g.RecordTypeUse(m.ValueAliasField.GetTypeName())
}
nullable, valuegoTyp, valuegoAliasTyp = generator.GoMapValueTypes(field, m.ValueField, valuegoTyp, valuegoAliasTyp)
if gogoproto.IsStdType(field) {
valuegoTyp = valuegoAliasTyp
}
g.P(`if m.`, fieldname, ` == nil {`)
g.In()
g.P(`m.`, fieldname, ` = make(`, m.GoType, `)`)
g.Out()
g.P(`}`)
g.declareMapField("mapkey", false, false, m.KeyAliasField)
g.declareMapField("mapvalue", nullable, gogoproto.IsCustomType(field), m.ValueAliasField)
g.P(`for iNdEx < postIndex {`)
g.In()
g.P(`entryPreIndex := iNdEx`)
g.P(`var wire uint64`)
g.decodeVarint("wire", "uint64")
g.P(`fieldNum := int32(wire >> 3)`)
g.P(`if fieldNum == 1 {`)
g.In()
g.mapUnmarshalField("mapkey", false, m.KeyAliasField)
g.Out()
g.P(`} else if fieldNum == 2 {`)
g.In()
g.mapUnmarshalField("mapvalue", gogoproto.IsCustomType(field), m.ValueAliasField)
g.Out()
g.P(`} else {`)
g.In()
g.P(`iNdEx = entryPreIndex`)
g.P(`skippy, err := skip`, g.localName, `(dAtA[iNdEx:])`)
g.P(`if err != nil {`)
g.In()
g.P(`return err`)
g.Out()
g.P(`}`)
g.P(`if (skippy < 0) || (iNdEx + skippy) < 0 {`)
g.In()
g.P(`return ErrInvalidLength`, g.localName)
g.Out()
g.P(`}`)
g.P(`if (iNdEx + skippy) > postIndex {`)
g.In()
g.P(`return `, g.ioPkg.Use(), `.ErrUnexpectedEOF`)
g.Out()
g.P(`}`)
g.P(`iNdEx += skippy`)
g.Out()
g.P(`}`)
g.Out()
g.P(`}`)
s := `m.` + fieldname
if keygoTyp == keygoAliasTyp {
s += `[mapkey]`
} else {
s += `[` + keygoAliasTyp + `(mapkey)]`
}
v := `mapvalue`
if (m.ValueField.IsMessage() || gogoproto.IsCustomType(field)) && !nullable {
v = `*` + v
}
if valuegoTyp != valuegoAliasTyp {
v = `((` + valuegoAliasTyp + `)(` + v + `))`
}
g.P(s, ` = `, v)
} else if repeated {
if gogoproto.IsStdTime(field) {
if nullable {
g.P(`m.`, fieldname, ` = append(m.`, fieldname, `, new(time.Time))`)
} else {
g.P(`m.`, fieldname, ` = append(m.`, fieldname, `, time.Time{})`)
}
} else if gogoproto.IsStdDuration(field) {
if nullable {
g.P(`m.`, fieldname, ` = append(m.`, fieldname, `, new(time.Duration))`)
} else {
g.P(`m.`, fieldname, ` = append(m.`, fieldname, `, time.Duration(0))`)
}
} else if gogoproto.IsStdDouble(field) {
if nullable {
g.P(`m.`, fieldname, ` = append(m.`, fieldname, `, new(float64))`)
} else {
g.P(`m.`, fieldname, ` = append(m.`, fieldname, `, 0)`)
}
} else if gogoproto.IsStdFloat(field) {
if nullable {
g.P(`m.`, fieldname, ` = append(m.`, fieldname, `, new(float32))`)
} else {
g.P(`m.`, fieldname, ` = append(m.`, fieldname, `, 0)`)
}
} else if gogoproto.IsStdInt64(field) {
if nullable {
g.P(`m.`, fieldname, ` = append(m.`, fieldname, `, new(int64))`)
} else {
g.P(`m.`, fieldname, ` = append(m.`, fieldname, `, 0)`)
}
} else if gogoproto.IsStdUInt64(field) {
if nullable {
g.P(`m.`, fieldname, ` = append(m.`, fieldname, `, new(uint64))`)
} else {
g.P(`m.`, fieldname, ` = append(m.`, fieldname, `, 0)`)
}
} else if gogoproto.IsStdInt32(field) {
if nullable {
g.P(`m.`, fieldname, ` = append(m.`, fieldname, `, new(int32))`)
} else {
g.P(`m.`, fieldname, ` = append(m.`, fieldname, `, 0)`)
}
} else if gogoproto.IsStdUInt32(field) {
if nullable {
g.P(`m.`, fieldname, ` = append(m.`, fieldname, `, new(uint32))`)
} else {
g.P(`m.`, fieldname, ` = append(m.`, fieldname, `, 0)`)
}
} else if gogoproto.IsStdBool(field) {
if nullable {
g.P(`m.`, fieldname, ` = append(m.`, fieldname, `, new(bool))`)
} else {
g.P(`m.`, fieldname, ` = append(m.`, fieldname, `, false)`)
}
} else if gogoproto.IsStdString(field) {
if nullable {
g.P(`m.`, fieldname, ` = append(m.`, fieldname, `, new(string))`)
} else {
g.P(`m.`, fieldname, ` = append(m.`, fieldname, `, "")`)
}
} else if gogoproto.IsStdBytes(field) {
if nullable {
g.P(`m.`, fieldname, ` = append(m.`, fieldname, `, new([]byte))`)
} else {
g.P(`m.`, fieldname, ` = append(m.`, fieldname, `, []byte{})`)
}
} else if nullable && !gogoproto.IsCustomType(field) {
g.P(`m.`, fieldname, ` = append(m.`, fieldname, `, &`, msgname, `{})`)
} else {
goType, _ := g.GoType(nil, field)
// remove the slice from the type, i.e. []*T -> *T
goType = goType[2:]
g.P(`m.`, fieldname, ` = append(m.`, fieldname, `, `, goType, `{})`)
}
varName := `m.` + fieldname + `[len(m.` + fieldname + `)-1]`
buf := `dAtA[iNdEx:postIndex]`
if gogoproto.IsStdTime(field) {
if nullable {
g.P(`if err := `, g.typesPkg.Use(), `.StdTimeUnmarshal(`, varName, `,`, buf, `); err != nil {`)
} else {
g.P(`if err := `, g.typesPkg.Use(), `.StdTimeUnmarshal(&(`, varName, `),`, buf, `); err != nil {`)
}
} else if gogoproto.IsStdDuration(field) {
if nullable {
g.P(`if err := `, g.typesPkg.Use(), `.StdDurationUnmarshal(`, varName, `,`, buf, `); err != nil {`)
} else {
g.P(`if err := `, g.typesPkg.Use(), `.StdDurationUnmarshal(&(`, varName, `),`, buf, `); err != nil {`)
}
} else if gogoproto.IsStdDouble(field) {
if nullable {
g.P(`if err := `, g.typesPkg.Use(), `.StdDoubleUnmarshal(`, varName, `,`, buf, `); err != nil {`)
} else {
g.P(`if err := `, g.typesPkg.Use(), `.StdDoubleUnmarshal(&(`, varName, `),`, buf, `); err != nil {`)
}
} else if gogoproto.IsStdFloat(field) {
if nullable {
g.P(`if err := `, g.typesPkg.Use(), `.StdFloatUnmarshal(`, varName, `,`, buf, `); err != nil {`)
} else {
g.P(`if err := `, g.typesPkg.Use(), `.StdFloatUnmarshal(&(`, varName, `),`, buf, `); err != nil {`)
}
} else if gogoproto.IsStdInt64(field) {
if nullable {
g.P(`if err := `, g.typesPkg.Use(), `.StdInt64Unmarshal(`, varName, `,`, buf, `); err != nil {`)
} else {
g.P(`if err := `, g.typesPkg.Use(), `.StdInt64Unmarshal(&(`, varName, `),`, buf, `); err != nil {`)
}
} else if gogoproto.IsStdUInt64(field) {
if nullable {
g.P(`if err := `, g.typesPkg.Use(), `.StdUInt64Unmarshal(`, varName, `,`, buf, `); err != nil {`)
} else {
g.P(`if err := `, g.typesPkg.Use(), `.StdUInt64Unmarshal(&(`, varName, `),`, buf, `); err != nil {`)
}
} else if gogoproto.IsStdInt32(field) {
if nullable {
g.P(`if err := `, g.typesPkg.Use(), `.StdInt32Unmarshal(`, varName, `,`, buf, `); err != nil {`)
} else {
g.P(`if err := `, g.typesPkg.Use(), `.StdInt32Unmarshal(&(`, varName, `),`, buf, `); err != nil {`)
}
} else if gogoproto.IsStdUInt32(field) {
if nullable {
g.P(`if err := `, g.typesPkg.Use(), `.StdUInt32Unmarshal(`, varName, `,`, buf, `); err != nil {`)
} else {
g.P(`if err := `, g.typesPkg.Use(), `.StdUInt32Unmarshal(&(`, varName, `),`, buf, `); err != nil {`)
}
} else if gogoproto.IsStdBool(field) {
if nullable {
g.P(`if err := `, g.typesPkg.Use(), `.StdBoolUnmarshal(`, varName, `,`, buf, `); err != nil {`)
} else {
g.P(`if err := `, g.typesPkg.Use(), `.StdBoolUnmarshal(&(`, varName, `),`, buf, `); err != nil {`)
}
} else if gogoproto.IsStdString(field) {
if nullable {
g.P(`if err := `, g.typesPkg.Use(), `.StdStringUnmarshal(`, varName, `,`, buf, `); err != nil {`)
} else {
g.P(`if err := `, g.typesPkg.Use(), `.StdStringUnmarshal(&(`, varName, `),`, buf, `); err != nil {`)
}
} else if gogoproto.IsStdBytes(field) {
if nullable {
g.P(`if err := `, g.typesPkg.Use(), `.StdBytesUnmarshal(`, varName, `,`, buf, `); err != nil {`)
} else {
g.P(`if err := `, g.typesPkg.Use(), `.StdBytesUnmarshal(&(`, varName, `),`, buf, `); err != nil {`)
}
} else {
g.P(`if err := `, varName, `.Unmarshal(`, buf, `); err != nil {`)
}
g.In()
g.P(`return err`)