fa0101bd60
This changes the BEP protocol to use protocol buffer serialization instead of XDR, and therefore also the database format. The local discovery protocol is also updated to be protocol buffer format. GitHub-Pull-Request: https://github.com/syncthing/syncthing/pull/3276 LGTM: AudriusButkevicius
294 lines
9.7 KiB
Go
294 lines
9.7 KiB
Go
// Copyright (c) 2013, Vastech SA (PTY) LTD. All rights reserved.
|
|
// http://github.com/gogo/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.
|
|
//
|
|
// 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.
|
|
|
|
/*
|
|
The stringer plugin generates a String method for each message.
|
|
|
|
It is enabled by the following extensions:
|
|
|
|
- stringer
|
|
- stringer_all
|
|
|
|
The stringer plugin also generates a test given it is enabled using one of the following extensions:
|
|
|
|
- testgen
|
|
- testgen_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.goproto_stringer_all) = false;
|
|
option (gogoproto.stringer_all) = true;
|
|
|
|
message A {
|
|
optional string Description = 1 [(gogoproto.nullable) = false];
|
|
optional int64 Number = 2 [(gogoproto.nullable) = false];
|
|
optional bytes Id = 3 [(gogoproto.customtype) = "github.com/gogo/protobuf/test/custom.Uuid", (gogoproto.nullable) = false];
|
|
}
|
|
|
|
given to the stringer stringer, will generate the following code:
|
|
|
|
func (this *A) String() string {
|
|
if this == nil {
|
|
return "nil"
|
|
}
|
|
s := strings.Join([]string{`&A{`,
|
|
`Description:` + fmt.Sprintf("%v", this.Description) + `,`,
|
|
`Number:` + fmt.Sprintf("%v", this.Number) + `,`,
|
|
`Id:` + fmt.Sprintf("%v", this.Id) + `,`,
|
|
`XXX_unrecognized:` + fmt.Sprintf("%v", this.XXX_unrecognized) + `,`,
|
|
`}`,
|
|
}, "")
|
|
return s
|
|
}
|
|
|
|
and the following test code:
|
|
|
|
func TestAStringer(t *testing4.T) {
|
|
popr := math_rand4.New(math_rand4.NewSource(time4.Now().UnixNano()))
|
|
p := NewPopulatedA(popr, false)
|
|
s1 := p.String()
|
|
s2 := fmt1.Sprintf("%v", p)
|
|
if s1 != s2 {
|
|
t.Fatalf("String want %v got %v", s1, s2)
|
|
}
|
|
}
|
|
|
|
Typically fmt.Printf("%v") will stop to print when it reaches a pointer and
|
|
not print their values, while the generated String method will always print all values, recursively.
|
|
|
|
*/
|
|
package stringer
|
|
|
|
import (
|
|
"github.com/gogo/protobuf/gogoproto"
|
|
"github.com/gogo/protobuf/protoc-gen-gogo/generator"
|
|
"strings"
|
|
)
|
|
|
|
type stringer struct {
|
|
*generator.Generator
|
|
generator.PluginImports
|
|
atleastOne bool
|
|
localName string
|
|
}
|
|
|
|
func NewStringer() *stringer {
|
|
return &stringer{}
|
|
}
|
|
|
|
func (p *stringer) Name() string {
|
|
return "stringer"
|
|
}
|
|
|
|
func (p *stringer) Init(g *generator.Generator) {
|
|
p.Generator = g
|
|
}
|
|
|
|
func (p *stringer) Generate(file *generator.FileDescriptor) {
|
|
proto3 := gogoproto.IsProto3(file.FileDescriptorProto)
|
|
p.PluginImports = generator.NewPluginImports(p.Generator)
|
|
p.atleastOne = false
|
|
|
|
p.localName = generator.FileName(file)
|
|
|
|
fmtPkg := p.NewImport("fmt")
|
|
stringsPkg := p.NewImport("strings")
|
|
reflectPkg := p.NewImport("reflect")
|
|
sortKeysPkg := p.NewImport("github.com/gogo/protobuf/sortkeys")
|
|
for _, message := range file.Messages() {
|
|
if !gogoproto.IsStringer(file.FileDescriptorProto, message.DescriptorProto) {
|
|
continue
|
|
}
|
|
if gogoproto.EnabledGoStringer(file.FileDescriptorProto, message.DescriptorProto) {
|
|
panic("old string method needs to be disabled, please use gogoproto.goproto_stringer or gogoproto.goproto_stringer_all and set it to false")
|
|
}
|
|
if message.DescriptorProto.GetOptions().GetMapEntry() {
|
|
continue
|
|
}
|
|
p.atleastOne = true
|
|
ccTypeName := generator.CamelCaseSlice(message.TypeName())
|
|
p.P(`func (this *`, ccTypeName, `) String() string {`)
|
|
p.In()
|
|
p.P(`if this == nil {`)
|
|
p.In()
|
|
p.P(`return "nil"`)
|
|
p.Out()
|
|
p.P(`}`)
|
|
for _, field := range message.Field {
|
|
if !p.IsMap(field) {
|
|
continue
|
|
}
|
|
fieldname := p.GetFieldName(message, field)
|
|
|
|
m := p.GoMapType(nil, field)
|
|
mapgoTyp, keyField, keyAliasField := m.GoType, m.KeyField, m.KeyAliasField
|
|
keysName := `keysFor` + fieldname
|
|
keygoTyp, _ := p.GoType(nil, keyField)
|
|
keygoTyp = strings.Replace(keygoTyp, "*", "", 1)
|
|
keygoAliasTyp, _ := p.GoType(nil, keyAliasField)
|
|
keygoAliasTyp = strings.Replace(keygoAliasTyp, "*", "", 1)
|
|
keyCapTyp := generator.CamelCase(keygoTyp)
|
|
p.P(keysName, ` := make([]`, keygoTyp, `, 0, len(this.`, fieldname, `))`)
|
|
p.P(`for k, _ := range this.`, fieldname, ` {`)
|
|
p.In()
|
|
if keygoAliasTyp == keygoTyp {
|
|
p.P(keysName, ` = append(`, keysName, `, k)`)
|
|
} else {
|
|
p.P(keysName, ` = append(`, keysName, `, `, keygoTyp, `(k))`)
|
|
}
|
|
p.Out()
|
|
p.P(`}`)
|
|
p.P(sortKeysPkg.Use(), `.`, keyCapTyp, `s(`, keysName, `)`)
|
|
mapName := `mapStringFor` + fieldname
|
|
p.P(mapName, ` := "`, mapgoTyp, `{"`)
|
|
p.P(`for _, k := range `, keysName, ` {`)
|
|
p.In()
|
|
if keygoAliasTyp == keygoTyp {
|
|
p.P(mapName, ` += fmt.Sprintf("%v: %v,", k, this.`, fieldname, `[k])`)
|
|
} else {
|
|
p.P(mapName, ` += fmt.Sprintf("%v: %v,", k, this.`, fieldname, `[`, keygoAliasTyp, `(k)])`)
|
|
}
|
|
p.Out()
|
|
p.P(`}`)
|
|
p.P(mapName, ` += "}"`)
|
|
}
|
|
p.P("s := ", stringsPkg.Use(), ".Join([]string{`&", ccTypeName, "{`,")
|
|
oneofs := make(map[string]struct{})
|
|
for _, field := range message.Field {
|
|
nullable := gogoproto.IsNullable(field)
|
|
repeated := field.IsRepeated()
|
|
fieldname := p.GetFieldName(message, field)
|
|
oneof := field.OneofIndex != nil
|
|
if oneof {
|
|
if _, ok := oneofs[fieldname]; ok {
|
|
continue
|
|
} else {
|
|
oneofs[fieldname] = struct{}{}
|
|
}
|
|
p.P("`", fieldname, ":`", ` + `, fmtPkg.Use(), `.Sprintf("%v", this.`, fieldname, ") + `,", "`,")
|
|
} else if p.IsMap(field) {
|
|
mapName := `mapStringFor` + fieldname
|
|
p.P("`", fieldname, ":`", ` + `, mapName, " + `,", "`,")
|
|
} else if field.IsMessage() || p.IsGroup(field) {
|
|
desc := p.ObjectNamed(field.GetTypeName())
|
|
msgname := p.TypeName(desc)
|
|
msgnames := strings.Split(msgname, ".")
|
|
typeName := msgnames[len(msgnames)-1]
|
|
if nullable {
|
|
p.P("`", fieldname, ":`", ` + `, stringsPkg.Use(), `.Replace(`, fmtPkg.Use(), `.Sprintf("%v", this.`, fieldname, `), "`, typeName, `","`, msgname, `"`, ", 1) + `,", "`,")
|
|
} else if repeated {
|
|
p.P("`", fieldname, ":`", ` + `, stringsPkg.Use(), `.Replace(`, stringsPkg.Use(), `.Replace(`, fmtPkg.Use(), `.Sprintf("%v", this.`, fieldname, `), "`, typeName, `","`, msgname, `"`, ", 1),`&`,``,1) + `,", "`,")
|
|
} else {
|
|
p.P("`", fieldname, ":`", ` + `, stringsPkg.Use(), `.Replace(`, stringsPkg.Use(), `.Replace(this.`, fieldname, `.String(), "`, typeName, `","`, msgname, `"`, ", 1),`&`,``,1) + `,", "`,")
|
|
}
|
|
} else {
|
|
if nullable && !repeated && !proto3 {
|
|
p.P("`", fieldname, ":`", ` + valueToString`, p.localName, `(this.`, fieldname, ") + `,", "`,")
|
|
} else {
|
|
p.P("`", fieldname, ":`", ` + `, fmtPkg.Use(), `.Sprintf("%v", this.`, fieldname, ") + `,", "`,")
|
|
}
|
|
}
|
|
}
|
|
if message.DescriptorProto.HasExtension() {
|
|
if gogoproto.HasExtensionsMap(file.FileDescriptorProto, message.DescriptorProto) {
|
|
p.P("`XXX_extensions:` + proto.StringFromExtensionsMap(this.XXX_extensions) + `,`,")
|
|
} else {
|
|
p.P("`XXX_extensions:` + proto.StringFromExtensionsBytes(this.XXX_extensions) + `,`,")
|
|
}
|
|
}
|
|
if gogoproto.HasUnrecognized(file.FileDescriptorProto, message.DescriptorProto) {
|
|
p.P("`XXX_unrecognized:` + ", fmtPkg.Use(), `.Sprintf("%v", this.XXX_unrecognized) + `, "`,`,")
|
|
}
|
|
p.P("`}`,")
|
|
p.P(`}`, `,""`, ")")
|
|
p.P(`return s`)
|
|
p.Out()
|
|
p.P(`}`)
|
|
|
|
//Generate String methods for oneof fields
|
|
for _, field := range message.Field {
|
|
oneof := field.OneofIndex != nil
|
|
if !oneof {
|
|
continue
|
|
}
|
|
ccTypeName := p.OneOfTypeName(message, field)
|
|
p.P(`func (this *`, ccTypeName, `) String() string {`)
|
|
p.In()
|
|
p.P(`if this == nil {`)
|
|
p.In()
|
|
p.P(`return "nil"`)
|
|
p.Out()
|
|
p.P(`}`)
|
|
p.P("s := ", stringsPkg.Use(), ".Join([]string{`&", ccTypeName, "{`,")
|
|
fieldname := p.GetOneOfFieldName(message, field)
|
|
if field.IsMessage() || p.IsGroup(field) {
|
|
desc := p.ObjectNamed(field.GetTypeName())
|
|
msgname := p.TypeName(desc)
|
|
msgnames := strings.Split(msgname, ".")
|
|
typeName := msgnames[len(msgnames)-1]
|
|
p.P("`", fieldname, ":`", ` + `, stringsPkg.Use(), `.Replace(`, fmtPkg.Use(), `.Sprintf("%v", this.`, fieldname, `), "`, typeName, `","`, msgname, `"`, ", 1) + `,", "`,")
|
|
} else {
|
|
p.P("`", fieldname, ":`", ` + `, fmtPkg.Use(), `.Sprintf("%v", this.`, fieldname, ") + `,", "`,")
|
|
}
|
|
p.P("`}`,")
|
|
p.P(`}`, `,""`, ")")
|
|
p.P(`return s`)
|
|
p.Out()
|
|
p.P(`}`)
|
|
}
|
|
}
|
|
|
|
if !p.atleastOne {
|
|
return
|
|
}
|
|
|
|
p.P(`func valueToString`, p.localName, `(v interface{}) string {`)
|
|
p.In()
|
|
p.P(`rv := `, reflectPkg.Use(), `.ValueOf(v)`)
|
|
p.P(`if rv.IsNil() {`)
|
|
p.In()
|
|
p.P(`return "nil"`)
|
|
p.Out()
|
|
p.P(`}`)
|
|
p.P(`pv := `, reflectPkg.Use(), `.Indirect(rv).Interface()`)
|
|
p.P(`return `, fmtPkg.Use(), `.Sprintf("*%v", pv)`)
|
|
p.Out()
|
|
p.P(`}`)
|
|
|
|
}
|
|
|
|
func init() {
|
|
generator.RegisterPlugin(NewStringer())
|
|
}
|