plugin/stringer/stringer.go - external/github.com/gogo/protobuf - Git at Google

 // Protocol Buffers for Go with Gadgets
 //
 // Copyright (c) 2013, The GoGo Authors. 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")
 	protoPkg := p.NewImport("github.com/gogo/protobuf/proto")
 	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() && !gogoproto.IsCustomType(field)) || 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_InternalExtensions:` + ", protoPkg.Use(), ".StringFromInternalExtension(this) + `,`,")
 			} else {
 				p.P("`XXX_extensions:` + ", protoPkg.Use(), ".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())
 }
	// Protocol Buffers for Go with Gadgets
	//
	// Copyright (c) 2013, The GoGo Authors. 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")
	protoPkg := p.NewImport("github.com/gogo/protobuf/proto")
	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() && !gogoproto.IsCustomType(field)) \|\| 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_InternalExtensions:` + ", protoPkg.Use(), ".StringFromInternalExtension(this) + `,`,")
	} else {
	p.P("`XXX_extensions:` + ", protoPkg.Use(), ".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())
	}