added vendors

vendor/github.com/gogo/protobuf/plugin/compare/compare.go

@@ -0,0 +1,526 @@
+// 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.
+
+package compare
+
+import (
+	"github.com/gogo/protobuf/gogoproto"
+	"github.com/gogo/protobuf/proto"
+	descriptor "github.com/gogo/protobuf/protoc-gen-gogo/descriptor"
+	"github.com/gogo/protobuf/protoc-gen-gogo/generator"
+	"github.com/gogo/protobuf/vanity"
+)
+
+type plugin struct {
+	*generator.Generator
+	generator.PluginImports
+	fmtPkg      generator.Single
+	bytesPkg    generator.Single
+	sortkeysPkg generator.Single
+	protoPkg    generator.Single
+}
+
+func NewPlugin() *plugin {
+	return &plugin{}
+}
+
+func (p *plugin) Name() string {
+	return "compare"
+}
+
+func (p *plugin) Init(g *generator.Generator) {
+	p.Generator = g
+}
+
+func (p *plugin) Generate(file *generator.FileDescriptor) {
+	p.PluginImports = generator.NewPluginImports(p.Generator)
+	p.fmtPkg = p.NewImport("fmt")
+	p.bytesPkg = p.NewImport("bytes")
+	p.sortkeysPkg = p.NewImport("github.com/gogo/protobuf/sortkeys")
+	p.protoPkg = p.NewImport("github.com/gogo/protobuf/proto")
+
+	for _, msg := range file.Messages() {
+		if msg.DescriptorProto.GetOptions().GetMapEntry() {
+			continue
+		}
+		if gogoproto.HasCompare(file.FileDescriptorProto, msg.DescriptorProto) {
+			p.generateMessage(file, msg)
+		}
+	}
+}
+
+func (p *plugin) generateNullableField(fieldname string) {
+	p.P(`if this.`, fieldname, ` != nil && that1.`, fieldname, ` != nil {`)
+	p.In()
+	p.P(`if *this.`, fieldname, ` != *that1.`, fieldname, `{`)
+	p.In()
+	p.P(`if *this.`, fieldname, ` < *that1.`, fieldname, `{`)
+	p.In()
+	p.P(`return -1`)
+	p.Out()
+	p.P(`}`)
+	p.P(`return 1`)
+	p.Out()
+	p.P(`}`)
+	p.Out()
+	p.P(`} else if this.`, fieldname, ` != nil {`)
+	p.In()
+	p.P(`return 1`)
+	p.Out()
+	p.P(`} else if that1.`, fieldname, ` != nil {`)
+	p.In()
+	p.P(`return -1`)
+	p.Out()
+	p.P(`}`)
+}
+
+func (p *plugin) generateMsgNullAndTypeCheck(ccTypeName string) {
+	p.P(`if that == nil {`)
+	p.In()
+	p.P(`if this == nil {`)
+	p.In()
+	p.P(`return 0`)
+	p.Out()
+	p.P(`}`)
+	p.P(`return 1`)
+	p.Out()
+	p.P(`}`)
+	p.P(``)
+	p.P(`that1, ok := that.(*`, ccTypeName, `)`)
+	p.P(`if !ok {`)
+	p.In()
+	p.P(`that2, ok := that.(`, ccTypeName, `)`)
+	p.P(`if ok {`)
+	p.In()
+	p.P(`that1 = &that2`)
+	p.Out()
+	p.P(`} else {`)
+	p.In()
+	p.P(`return 1`)
+	p.Out()
+	p.P(`}`)
+	p.Out()
+	p.P(`}`)
+	p.P(`if that1 == nil {`)
+	p.In()
+	p.P(`if this == nil {`)
+	p.In()
+	p.P(`return 0`)
+	p.Out()
+	p.P(`}`)
+	p.P(`return 1`)
+	p.Out()
+	p.P(`} else if this == nil {`)
+	p.In()
+	p.P(`return -1`)
+	p.Out()
+	p.P(`}`)
+}
+
+func (p *plugin) generateField(file *generator.FileDescriptor, message *generator.Descriptor, field *descriptor.FieldDescriptorProto) {
+	proto3 := gogoproto.IsProto3(file.FileDescriptorProto)
+	fieldname := p.GetOneOfFieldName(message, field)
+	repeated := field.IsRepeated()
+	ctype := gogoproto.IsCustomType(field)
+	nullable := gogoproto.IsNullable(field)
+	// oneof := field.OneofIndex != nil
+	if !repeated {
+		if ctype {
+			if nullable {
+				p.P(`if that1.`, fieldname, ` == nil {`)
+				p.In()
+				p.P(`if this.`, fieldname, ` != nil {`)
+				p.In()
+				p.P(`return 1`)
+				p.Out()
+				p.P(`}`)
+				p.Out()
+				p.P(`} else if this.`, fieldname, ` == nil {`)
+				p.In()
+				p.P(`return -1`)
+				p.Out()
+				p.P(`} else if c := this.`, fieldname, `.Compare(*that1.`, fieldname, `); c != 0 {`)
+			} else {
+				p.P(`if c := this.`, fieldname, `.Compare(that1.`, fieldname, `); c != 0 {`)
+			}
+			p.In()
+			p.P(`return c`)
+			p.Out()
+			p.P(`}`)
+		} else {
+			if field.IsMessage() || p.IsGroup(field) {
+				if nullable {
+					p.P(`if c := this.`, fieldname, `.Compare(that1.`, fieldname, `); c != 0 {`)
+				} else {
+					p.P(`if c := this.`, fieldname, `.Compare(&that1.`, fieldname, `); c != 0 {`)
+				}
+				p.In()
+				p.P(`return c`)
+				p.Out()
+				p.P(`}`)
+			} else if field.IsBytes() {
+				p.P(`if c := `, p.bytesPkg.Use(), `.Compare(this.`, fieldname, `, that1.`, fieldname, `); c != 0 {`)
+				p.In()
+				p.P(`return c`)
+				p.Out()
+				p.P(`}`)
+			} else if field.IsString() {
+				if nullable && !proto3 {
+					p.generateNullableField(fieldname)
+				} else {
+					p.P(`if this.`, fieldname, ` != that1.`, fieldname, `{`)
+					p.In()
+					p.P(`if this.`, fieldname, ` < that1.`, fieldname, `{`)
+					p.In()
+					p.P(`return -1`)
+					p.Out()
+					p.P(`}`)
+					p.P(`return 1`)
+					p.Out()
+					p.P(`}`)
+				}
+			} else if field.IsBool() {
+				if nullable && !proto3 {
+					p.P(`if this.`, fieldname, ` != nil && that1.`, fieldname, ` != nil {`)
+					p.In()
+					p.P(`if *this.`, fieldname, ` != *that1.`, fieldname, `{`)
+					p.In()
+					p.P(`if !*this.`, fieldname, ` {`)
+					p.In()
+					p.P(`return -1`)
+					p.Out()
+					p.P(`}`)
+					p.P(`return 1`)
+					p.Out()
+					p.P(`}`)
+					p.Out()
+					p.P(`} else if this.`, fieldname, ` != nil {`)
+					p.In()
+					p.P(`return 1`)
+					p.Out()
+					p.P(`} else if that1.`, fieldname, ` != nil {`)
+					p.In()
+					p.P(`return -1`)
+					p.Out()
+					p.P(`}`)
+				} else {
+					p.P(`if this.`, fieldname, ` != that1.`, fieldname, `{`)
+					p.In()
+					p.P(`if !this.`, fieldname, ` {`)
+					p.In()
+					p.P(`return -1`)
+					p.Out()
+					p.P(`}`)
+					p.P(`return 1`)
+					p.Out()
+					p.P(`}`)
+				}
+			} else {
+				if nullable && !proto3 {
+					p.generateNullableField(fieldname)
+				} else {
+					p.P(`if this.`, fieldname, ` != that1.`, fieldname, `{`)
+					p.In()
+					p.P(`if this.`, fieldname, ` < that1.`, fieldname, `{`)
+					p.In()
+					p.P(`return -1`)
+					p.Out()
+					p.P(`}`)
+					p.P(`return 1`)
+					p.Out()
+					p.P(`}`)
+				}
+			}
+		}
+	} else {
+		p.P(`if len(this.`, fieldname, `) != len(that1.`, fieldname, `) {`)
+		p.In()
+		p.P(`if len(this.`, fieldname, `) < len(that1.`, fieldname, `) {`)
+		p.In()
+		p.P(`return -1`)
+		p.Out()
+		p.P(`}`)
+		p.P(`return 1`)
+		p.Out()
+		p.P(`}`)
+		p.P(`for i := range this.`, fieldname, ` {`)
+		p.In()
+		if ctype {
+			p.P(`if c := this.`, fieldname, `[i].Compare(that1.`, fieldname, `[i]); c != 0 {`)
+			p.In()
+			p.P(`return c`)
+			p.Out()
+			p.P(`}`)
+		} else {
+			if p.IsMap(field) {
+				m := p.GoMapType(nil, field)
+				valuegoTyp, _ := p.GoType(nil, m.ValueField)
+				valuegoAliasTyp, _ := p.GoType(nil, m.ValueAliasField)
+				nullable, valuegoTyp, valuegoAliasTyp = generator.GoMapValueTypes(field, m.ValueField, valuegoTyp, valuegoAliasTyp)
+
+				mapValue := m.ValueAliasField
+				if mapValue.IsMessage() || p.IsGroup(mapValue) {
+					if nullable && valuegoTyp == valuegoAliasTyp {
+						p.P(`if c := this.`, fieldname, `[i].Compare(that1.`, fieldname, `[i]); c != 0 {`)
+					} else {
+						// Compare() has a pointer receiver, but map value is a value type
+						a := `this.` + fieldname + `[i]`
+						b := `that1.` + fieldname + `[i]`
+						if valuegoTyp != valuegoAliasTyp {
+							// cast back to the type that has the generated methods on it
+							a = `(` + valuegoTyp + `)(` + a + `)`
+							b = `(` + valuegoTyp + `)(` + b + `)`
+						}
+						p.P(`a := `, a)
+						p.P(`b := `, b)
+						if nullable {
+							p.P(`if c := a.Compare(b); c != 0 {`)
+						} else {
+							p.P(`if c := (&a).Compare(&b); c != 0 {`)
+						}
+					}
+					p.In()
+					p.P(`return c`)
+					p.Out()
+					p.P(`}`)
+				} else if mapValue.IsBytes() {
+					p.P(`if c := `, p.bytesPkg.Use(), `.Compare(this.`, fieldname, `[i], that1.`, fieldname, `[i]); c != 0 {`)
+					p.In()
+					p.P(`return c`)
+					p.Out()
+					p.P(`}`)
+				} else if mapValue.IsString() {
+					p.P(`if this.`, fieldname, `[i] != that1.`, fieldname, `[i] {`)
+					p.In()
+					p.P(`if this.`, fieldname, `[i] < that1.`, fieldname, `[i] {`)
+					p.In()
+					p.P(`return -1`)
+					p.Out()
+					p.P(`}`)
+					p.P(`return 1`)
+					p.Out()
+					p.P(`}`)
+				} else {
+					p.P(`if this.`, fieldname, `[i] != that1.`, fieldname, `[i] {`)
+					p.In()
+					p.P(`if this.`, fieldname, `[i] < that1.`, fieldname, `[i] {`)
+					p.In()
+					p.P(`return -1`)
+					p.Out()
+					p.P(`}`)
+					p.P(`return 1`)
+					p.Out()
+					p.P(`}`)
+				}
+			} else if field.IsMessage() || p.IsGroup(field) {
+				if nullable {
+					p.P(`if c := this.`, fieldname, `[i].Compare(that1.`, fieldname, `[i]); c != 0 {`)
+					p.In()
+					p.P(`return c`)
+					p.Out()
+					p.P(`}`)
+				} else {
+					p.P(`if c := this.`, fieldname, `[i].Compare(&that1.`, fieldname, `[i]); c != 0 {`)
+					p.In()
+					p.P(`return c`)
+					p.Out()
+					p.P(`}`)
+				}
+			} else if field.IsBytes() {
+				p.P(`if c := `, p.bytesPkg.Use(), `.Compare(this.`, fieldname, `[i], that1.`, fieldname, `[i]); c != 0 {`)
+				p.In()
+				p.P(`return c`)
+				p.Out()
+				p.P(`}`)
+			} else if field.IsString() {
+				p.P(`if this.`, fieldname, `[i] != that1.`, fieldname, `[i] {`)
+				p.In()
+				p.P(`if this.`, fieldname, `[i] < that1.`, fieldname, `[i] {`)
+				p.In()
+				p.P(`return -1`)
+				p.Out()
+				p.P(`}`)
+				p.P(`return 1`)
+				p.Out()
+				p.P(`}`)
+			} else if field.IsBool() {
+				p.P(`if this.`, fieldname, `[i] != that1.`, fieldname, `[i] {`)
+				p.In()
+				p.P(`if !this.`, fieldname, `[i] {`)
+				p.In()
+				p.P(`return -1`)
+				p.Out()
+				p.P(`}`)
+				p.P(`return 1`)
+				p.Out()
+				p.P(`}`)
+			} else {
+				p.P(`if this.`, fieldname, `[i] != that1.`, fieldname, `[i] {`)
+				p.In()
+				p.P(`if this.`, fieldname, `[i] < that1.`, fieldname, `[i] {`)
+				p.In()
+				p.P(`return -1`)
+				p.Out()
+				p.P(`}`)
+				p.P(`return 1`)
+				p.Out()
+				p.P(`}`)
+			}
+		}
+		p.Out()
+		p.P(`}`)
+	}
+}
+
+func (p *plugin) generateMessage(file *generator.FileDescriptor, message *generator.Descriptor) {
+	ccTypeName := generator.CamelCaseSlice(message.TypeName())
+	p.P(`func (this *`, ccTypeName, `) Compare(that interface{}) int {`)
+	p.In()
+	p.generateMsgNullAndTypeCheck(ccTypeName)
+	oneofs := make(map[string]struct{})
+
+	for _, field := range message.Field {
+		oneof := field.OneofIndex != nil
+		if oneof {
+			fieldname := p.GetFieldName(message, field)
+			if _, ok := oneofs[fieldname]; ok {
+				continue
+			} else {
+				oneofs[fieldname] = struct{}{}
+			}
+			p.P(`if that1.`, fieldname, ` == nil {`)
+			p.In()
+			p.P(`if this.`, fieldname, ` != nil {`)
+			p.In()
+			p.P(`return 1`)
+			p.Out()
+			p.P(`}`)
+			p.Out()
+			p.P(`} else if this.`, fieldname, ` == nil {`)
+			p.In()
+			p.P(`return -1`)
+			p.Out()
+			p.P(`} else if c := this.`, fieldname, `.Compare(that1.`, fieldname, `); c != 0 {`)
+			p.In()
+			p.P(`return c`)
+			p.Out()
+			p.P(`}`)
+		} else {
+			p.generateField(file, message, field)
+		}
+	}
+	if message.DescriptorProto.HasExtension() {
+		if gogoproto.HasExtensionsMap(file.FileDescriptorProto, message.DescriptorProto) {
+			p.P(`thismap := `, p.protoPkg.Use(), `.GetUnsafeExtensionsMap(this)`)
+			p.P(`thatmap := `, p.protoPkg.Use(), `.GetUnsafeExtensionsMap(that1)`)
+			p.P(`extkeys := make([]int32, 0, len(thismap)+len(thatmap))`)
+			p.P(`for k, _ := range thismap {`)
+			p.In()
+			p.P(`extkeys = append(extkeys, k)`)
+			p.Out()
+			p.P(`}`)
+			p.P(`for k, _ := range thatmap {`)
+			p.In()
+			p.P(`if _, ok := thismap[k]; !ok {`)
+			p.In()
+			p.P(`extkeys = append(extkeys, k)`)
+			p.Out()
+			p.P(`}`)
+			p.Out()
+			p.P(`}`)
+			p.P(p.sortkeysPkg.Use(), `.Int32s(extkeys)`)
+			p.P(`for _, k := range extkeys {`)
+			p.In()
+			p.P(`if v, ok := thismap[k]; ok {`)
+			p.In()
+			p.P(`if v2, ok := thatmap[k]; ok {`)
+			p.In()
+			p.P(`if c := v.Compare(&v2); c != 0 {`)
+			p.In()
+			p.P(`return c`)
+			p.Out()
+			p.P(`}`)
+			p.Out()
+			p.P(`} else  {`)
+			p.In()
+			p.P(`return 1`)
+			p.Out()
+			p.P(`}`)
+			p.Out()
+			p.P(`} else {`)
+			p.In()
+			p.P(`return -1`)
+			p.Out()
+			p.P(`}`)
+			p.Out()
+			p.P(`}`)
+		} else {
+			fieldname := "XXX_extensions"
+			p.P(`if c := `, p.bytesPkg.Use(), `.Compare(this.`, fieldname, `, that1.`, fieldname, `); c != 0 {`)
+			p.In()
+			p.P(`return c`)
+			p.Out()
+			p.P(`}`)
+		}
+	}
+	if gogoproto.HasUnrecognized(file.FileDescriptorProto, message.DescriptorProto) {
+		fieldname := "XXX_unrecognized"
+		p.P(`if c := `, p.bytesPkg.Use(), `.Compare(this.`, fieldname, `, that1.`, fieldname, `); c != 0 {`)
+		p.In()
+		p.P(`return c`)
+		p.Out()
+		p.P(`}`)
+	}
+	p.P(`return 0`)
+	p.Out()
+	p.P(`}`)
+
+	//Generate Compare methods for oneof fields
+	m := proto.Clone(message.DescriptorProto).(*descriptor.DescriptorProto)
+	for _, field := range m.Field {
+		oneof := field.OneofIndex != nil
+		if !oneof {
+			continue
+		}
+		ccTypeName := p.OneOfTypeName(message, field)
+		p.P(`func (this *`, ccTypeName, `) Compare(that interface{}) int {`)
+		p.In()
+
+		p.generateMsgNullAndTypeCheck(ccTypeName)
+		vanity.TurnOffNullableForNativeTypes(field)
+		p.generateField(file, message, field)
+
+		p.P(`return 0`)
+		p.Out()
+		p.P(`}`)
+	}
+}
+
+func init() {
+	generator.RegisterPlugin(NewPlugin())
+}

vendor/github.com/gogo/protobuf/plugin/compare/comparetest.go

@@ -0,0 +1,118 @@
+// 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.
+
+package compare
+
+import (
+	"github.com/gogo/protobuf/gogoproto"
+	"github.com/gogo/protobuf/plugin/testgen"
+	"github.com/gogo/protobuf/protoc-gen-gogo/generator"
+)
+
+type test struct {
+	*generator.Generator
+}
+
+func NewTest(g *generator.Generator) testgen.TestPlugin {
+	return &test{g}
+}
+
+func (p *test) Generate(imports generator.PluginImports, file *generator.FileDescriptor) bool {
+	used := false
+	randPkg := imports.NewImport("math/rand")
+	timePkg := imports.NewImport("time")
+	testingPkg := imports.NewImport("testing")
+	protoPkg := imports.NewImport("github.com/gogo/protobuf/proto")
+	unsafePkg := imports.NewImport("unsafe")
+	if !gogoproto.ImportsGoGoProto(file.FileDescriptorProto) {
+		protoPkg = imports.NewImport("github.com/golang/protobuf/proto")
+	}
+	for _, message := range file.Messages() {
+		ccTypeName := generator.CamelCaseSlice(message.TypeName())
+		if !gogoproto.HasCompare(file.FileDescriptorProto, message.DescriptorProto) {
+			continue
+		}
+		if message.DescriptorProto.GetOptions().GetMapEntry() {
+			continue
+		}
+
+		if gogoproto.HasTestGen(file.FileDescriptorProto, message.DescriptorProto) {
+			used = true
+			hasUnsafe := gogoproto.IsUnsafeMarshaler(file.FileDescriptorProto, message.DescriptorProto) ||
+				gogoproto.IsUnsafeUnmarshaler(file.FileDescriptorProto, message.DescriptorProto)
+			p.P(`func Test`, ccTypeName, `Compare(t *`, testingPkg.Use(), `.T) {`)
+			p.In()
+			if hasUnsafe {
+				p.P(`var bigendian uint32 = 0x01020304`)
+				p.P(`if *(*byte)(`, unsafePkg.Use(), `.Pointer(&bigendian)) == 1 {`)
+				p.In()
+				p.P(`t.Skip("unsafe does not work on big endian architectures")`)
+				p.Out()
+				p.P(`}`)
+			}
+			p.P(`popr := `, randPkg.Use(), `.New(`, randPkg.Use(), `.NewSource(`, timePkg.Use(), `.Now().UnixNano()))`)
+			p.P(`p := NewPopulated`, ccTypeName, `(popr, false)`)
+			p.P(`dAtA, err := `, protoPkg.Use(), `.Marshal(p)`)
+			p.P(`if err != nil {`)
+			p.In()
+			p.P(`panic(err)`)
+			p.Out()
+			p.P(`}`)
+			p.P(`msg := &`, ccTypeName, `{}`)
+			p.P(`if err := `, protoPkg.Use(), `.Unmarshal(dAtA, msg); err != nil {`)
+			p.In()
+			p.P(`panic(err)`)
+			p.Out()
+			p.P(`}`)
+			p.P(`if c := p.Compare(msg); c != 0 {`)
+			p.In()
+			p.P(`t.Fatalf("%#v !Compare %#v, since %d", msg, p, c)`)
+			p.Out()
+			p.P(`}`)
+			p.P(`p2 := NewPopulated`, ccTypeName, `(popr, false)`)
+			p.P(`c := p.Compare(p2)`)
+			p.P(`c2 := p2.Compare(p)`)
+			p.P(`if c != (-1 * c2) {`)
+			p.In()
+			p.P(`t.Errorf("p.Compare(p2) = %d", c)`)
+			p.P(`t.Errorf("p2.Compare(p) = %d", c2)`)
+			p.P(`t.Errorf("p = %#v", p)`)
+			p.P(`t.Errorf("p2 = %#v", p2)`)
+			p.Out()
+			p.P(`}`)
+			p.Out()
+			p.P(`}`)
+		}
+
+	}
+	return used
+}
+
+func init() {
+	testgen.RegisterTestPlugin(NewTest)
+}

vendor/github.com/gogo/protobuf/plugin/defaultcheck/defaultcheck.go

@@ -0,0 +1,133 @@
+// 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 defaultcheck plugin is used to check whether nullable is not used incorrectly.
+For instance:
+An error is caused if a nullable field:
+  - has a default value,
+  - is an enum which does not start at zero,
+  - is used for an extension,
+  - is used for a native proto3 type,
+  - is used for a repeated native type.
+
+An error is also caused if a field with a default value is used in a message:
+  - which is a face.
+  - without getters.
+
+It is enabled by the following extensions:
+
+  - nullable
+
+For incorrect usage of nullable with tests see:
+
+  github.com/gogo/protobuf/test/nullableconflict
+
+*/
+package defaultcheck
+
+import (
+	"fmt"
+	"github.com/gogo/protobuf/gogoproto"
+	"github.com/gogo/protobuf/protoc-gen-gogo/generator"
+	"os"
+)
+
+type plugin struct {
+	*generator.Generator
+}
+
+func NewPlugin() *plugin {
+	return &plugin{}
+}
+
+func (p *plugin) Name() string {
+	return "defaultcheck"
+}
+
+func (p *plugin) Init(g *generator.Generator) {
+	p.Generator = g
+}
+
+func (p *plugin) Generate(file *generator.FileDescriptor) {
+	proto3 := gogoproto.IsProto3(file.FileDescriptorProto)
+	for _, msg := range file.Messages() {
+		getters := gogoproto.HasGoGetters(file.FileDescriptorProto, msg.DescriptorProto)
+		face := gogoproto.IsFace(file.FileDescriptorProto, msg.DescriptorProto)
+		for _, field := range msg.GetField() {
+			if len(field.GetDefaultValue()) > 0 {
+				if !getters {
+					fmt.Fprintf(os.Stderr, "ERROR: field %v.%v cannot have a default value and not have a getter method", generator.CamelCase(*msg.Name), generator.CamelCase(*field.Name))
+					os.Exit(1)
+				}
+				if face {
+					fmt.Fprintf(os.Stderr, "ERROR: field %v.%v cannot have a default value be in a face", generator.CamelCase(*msg.Name), generator.CamelCase(*field.Name))
+					os.Exit(1)
+				}
+			}
+			if gogoproto.IsNullable(field) {
+				continue
+			}
+			if len(field.GetDefaultValue()) > 0 {
+				fmt.Fprintf(os.Stderr, "ERROR: field %v.%v cannot be non-nullable and have a default value", generator.CamelCase(*msg.Name), generator.CamelCase(*field.Name))
+				os.Exit(1)
+			}
+			if !field.IsMessage() && !gogoproto.IsCustomType(field) {
+				if field.IsRepeated() {
+					fmt.Fprintf(os.Stderr, "WARNING: field %v.%v is a repeated non-nullable native type, nullable=false has no effect\n", generator.CamelCase(*msg.Name), generator.CamelCase(*field.Name))
+				} else if proto3 {
+					fmt.Fprintf(os.Stderr, "ERROR: field %v.%v is a native type and in proto3 syntax with nullable=false there exists conflicting implementations when encoding zero values", generator.CamelCase(*msg.Name), generator.CamelCase(*field.Name))
+					os.Exit(1)
+				}
+				if field.IsBytes() {
+					fmt.Fprintf(os.Stderr, "WARNING: field %v.%v is a non-nullable bytes type, nullable=false has no effect\n", generator.CamelCase(*msg.Name), generator.CamelCase(*field.Name))
+				}
+			}
+			if !field.IsEnum() {
+				continue
+			}
+			enum := p.ObjectNamed(field.GetTypeName()).(*generator.EnumDescriptor)
+			if len(enum.Value) == 0 || enum.Value[0].GetNumber() != 0 {
+				fmt.Fprintf(os.Stderr, "ERROR: field %v.%v cannot be non-nullable and be an enum type %v which does not start with zero", generator.CamelCase(*msg.Name), generator.CamelCase(*field.Name), enum.GetName())
+				os.Exit(1)
+			}
+		}
+	}
+	for _, e := range file.GetExtension() {
+		if !gogoproto.IsNullable(e) {
+			fmt.Fprintf(os.Stderr, "ERROR: extended field %v cannot be nullable %v", generator.CamelCase(e.GetName()), generator.CamelCase(*e.Name))
+			os.Exit(1)
+		}
+	}
+}
+
+func (p *plugin) GenerateImports(*generator.FileDescriptor) {}
+
+func init() {
+	generator.RegisterPlugin(NewPlugin())
+}

vendor/github.com/gogo/protobuf/plugin/description/description.go

@@ -0,0 +1,201 @@
+// 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 description (experimental) plugin generates a Description method for each message.
+The Description method returns a populated google_protobuf.FileDescriptorSet struct.
+This contains the description of the files used to generate this message.
+
+It is enabled by the following extensions:
+
+  - description
+  - description_all
+
+The description 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:
+
+  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 description plugin, will generate the following code:
+
+  func (this *B) Description() (desc *google_protobuf.FileDescriptorSet) {
+	return ExampleDescription()
+  }
+
+and the following test code:
+
+  func TestDescription(t *testing9.T) {
+	ExampleDescription()
+  }
+
+The hope is to use this struct in some way instead of reflect.
+This package is subject to change, since a use has not been figured out yet.
+
+*/
+package description
+
+import (
+	"bytes"
+	"compress/gzip"
+	"fmt"
+	"github.com/gogo/protobuf/gogoproto"
+	"github.com/gogo/protobuf/proto"
+	descriptor "github.com/gogo/protobuf/protoc-gen-gogo/descriptor"
+	"github.com/gogo/protobuf/protoc-gen-gogo/generator"
+)
+
+type plugin struct {
+	*generator.Generator
+	generator.PluginImports
+}
+
+func NewPlugin() *plugin {
+	return &plugin{}
+}
+
+func (p *plugin) Name() string {
+	return "description"
+}
+
+func (p *plugin) Init(g *generator.Generator) {
+	p.Generator = g
+}
+
+func (p *plugin) Generate(file *generator.FileDescriptor) {
+	used := false
+	localName := generator.FileName(file)
+
+	p.PluginImports = generator.NewPluginImports(p.Generator)
+	descriptorPkg := p.NewImport("github.com/gogo/protobuf/protoc-gen-gogo/descriptor")
+	protoPkg := p.NewImport("github.com/gogo/protobuf/proto")
+	gzipPkg := p.NewImport("compress/gzip")
+	bytesPkg := p.NewImport("bytes")
+	ioutilPkg := p.NewImport("io/ioutil")
+
+	for _, message := range file.Messages() {
+		if !gogoproto.HasDescription(file.FileDescriptorProto, message.DescriptorProto) {
+			continue
+		}
+		if message.DescriptorProto.GetOptions().GetMapEntry() {
+			continue
+		}
+		used = true
+		ccTypeName := generator.CamelCaseSlice(message.TypeName())
+		p.P(`func (this *`, ccTypeName, `) Description() (desc *`, descriptorPkg.Use(), `.FileDescriptorSet) {`)
+		p.In()
+		p.P(`return `, localName, `Description()`)
+		p.Out()
+		p.P(`}`)
+	}
+
+	if used {
+
+		p.P(`func `, localName, `Description() (desc *`, descriptorPkg.Use(), `.FileDescriptorSet) {`)
+		p.In()
+		//Don't generate SourceCodeInfo, since it will create too much code.
+
+		ss := make([]*descriptor.SourceCodeInfo, 0)
+		for _, f := range p.Generator.AllFiles().GetFile() {
+			ss = append(ss, f.SourceCodeInfo)
+			f.SourceCodeInfo = nil
+		}
+		b, err := proto.Marshal(p.Generator.AllFiles())
+		if err != nil {
+			panic(err)
+		}
+		for i, f := range p.Generator.AllFiles().GetFile() {
+			f.SourceCodeInfo = ss[i]
+		}
+		p.P(`d := &`, descriptorPkg.Use(), `.FileDescriptorSet{}`)
+		var buf bytes.Buffer
+		w, _ := gzip.NewWriterLevel(&buf, gzip.BestCompression)
+		w.Write(b)
+		w.Close()
+		b = buf.Bytes()
+		p.P("var gzipped = []byte{")
+		p.In()
+		p.P("// ", len(b), " bytes of a gzipped FileDescriptorSet")
+		for len(b) > 0 {
+			n := 16
+			if n > len(b) {
+				n = len(b)
+			}
+
+			s := ""
+			for _, c := range b[:n] {
+				s += fmt.Sprintf("0x%02x,", c)
+			}
+			p.P(s)
+
+			b = b[n:]
+		}
+		p.Out()
+		p.P("}")
+		p.P(`r := `, bytesPkg.Use(), `.NewReader(gzipped)`)
+		p.P(`gzipr, err := `, gzipPkg.Use(), `.NewReader(r)`)
+		p.P(`if err != nil {`)
+		p.In()
+		p.P(`panic(err)`)
+		p.Out()
+		p.P(`}`)
+		p.P(`ungzipped, err := `, ioutilPkg.Use(), `.ReadAll(gzipr)`)
+		p.P(`if err != nil {`)
+		p.In()
+		p.P(`panic(err)`)
+		p.Out()
+		p.P(`}`)
+		p.P(`if err := `, protoPkg.Use(), `.Unmarshal(ungzipped, d); err != nil {`)
+		p.In()
+		p.P(`panic(err)`)
+		p.Out()
+		p.P(`}`)
+		p.P(`return d`)
+		p.Out()
+		p.P(`}`)
+	}
+}
+
+func init() {
+	generator.RegisterPlugin(NewPlugin())
+}

vendor/github.com/gogo/protobuf/plugin/description/descriptiontest.go

@@ -0,0 +1,73 @@
+// 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.
+
+package description
+
+import (
+	"github.com/gogo/protobuf/gogoproto"
+	"github.com/gogo/protobuf/plugin/testgen"
+	"github.com/gogo/protobuf/protoc-gen-gogo/generator"
+)
+
+type test struct {
+	*generator.Generator
+}
+
+func NewTest(g *generator.Generator) testgen.TestPlugin {
+	return &test{g}
+}
+
+func (p *test) Generate(imports generator.PluginImports, file *generator.FileDescriptor) bool {
+	used := false
+	testingPkg := imports.NewImport("testing")
+	for _, message := range file.Messages() {
+		if !gogoproto.HasDescription(file.FileDescriptorProto, message.DescriptorProto) ||
+			!gogoproto.HasTestGen(file.FileDescriptorProto, message.DescriptorProto) {
+			continue
+		}
+		if message.DescriptorProto.GetOptions().GetMapEntry() {
+			continue
+		}
+		used = true
+	}
+
+	if used {
+		localName := generator.FileName(file)
+		p.P(`func Test`, localName, `Description(t *`, testingPkg.Use(), `.T) {`)
+		p.In()
+		p.P(localName, `Description()`)
+		p.Out()
+		p.P(`}`)
+
+	}
+	return used
+}
+
+func init() {
+	testgen.RegisterTestPlugin(NewTest)
+}

vendor/github.com/gogo/protobuf/plugin/embedcheck/embedcheck.go

@@ -0,0 +1,200 @@
+// 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 embedcheck plugin is used to check whether embed is not used incorrectly.
+For instance:
+An embedded message has a generated string method, but the is a member of a message which does not.
+This causes a warning.
+An error is caused by a namespace conflict.
+
+It is enabled by the following extensions:
+
+  - embed
+  - embed_all
+
+For incorrect usage of embed with tests see:
+
+  github.com/gogo/protobuf/test/embedconflict
+
+*/
+package embedcheck
+
+import (
+	"fmt"
+	"os"
+
+	"github.com/gogo/protobuf/gogoproto"
+	"github.com/gogo/protobuf/protoc-gen-gogo/generator"
+)
+
+type plugin struct {
+	*generator.Generator
+}
+
+func NewPlugin() *plugin {
+	return &plugin{}
+}
+
+func (p *plugin) Name() string {
+	return "embedcheck"
+}
+
+func (p *plugin) Init(g *generator.Generator) {
+	p.Generator = g
+}
+
+var overwriters []map[string]gogoproto.EnableFunc = []map[string]gogoproto.EnableFunc{
+	{
+		"stringer": gogoproto.IsStringer,
+	},
+	{
+		"gostring": gogoproto.HasGoString,
+	},
+	{
+		"equal": gogoproto.HasEqual,
+	},
+	{
+		"verboseequal": gogoproto.HasVerboseEqual,
+	},
+	{
+		"size":       gogoproto.IsSizer,
+		"protosizer": gogoproto.IsProtoSizer,
+	},
+	{
+		"unmarshaler":        gogoproto.IsUnmarshaler,
+		"unsafe_unmarshaler": gogoproto.IsUnsafeUnmarshaler,
+	},
+	{
+		"marshaler":        gogoproto.IsMarshaler,
+		"unsafe_marshaler": gogoproto.IsUnsafeMarshaler,
+	},
+}
+
+func (p *plugin) Generate(file *generator.FileDescriptor) {
+	for _, msg := range file.Messages() {
+		for _, os := range overwriters {
+			possible := true
+			for _, overwriter := range os {
+				if overwriter(file.FileDescriptorProto, msg.DescriptorProto) {
+					possible = false
+				}
+			}
+			if possible {
+				p.checkOverwrite(msg, os)
+			}
+		}
+		p.checkNameSpace(msg)
+		for _, field := range msg.GetField() {
+			if gogoproto.IsEmbed(field) && gogoproto.IsCustomName(field) {
+				fmt.Fprintf(os.Stderr, "ERROR: field %v with custom name %v cannot be embedded", *field.Name, gogoproto.GetCustomName(field))
+				os.Exit(1)
+			}
+		}
+		p.checkRepeated(msg)
+	}
+	for _, e := range file.GetExtension() {
+		if gogoproto.IsEmbed(e) {
+			fmt.Fprintf(os.Stderr, "ERROR: extended field %v cannot be embedded", generator.CamelCase(*e.Name))
+			os.Exit(1)
+		}
+	}
+}
+
+func (p *plugin) checkNameSpace(message *generator.Descriptor) map[string]bool {
+	ccTypeName := generator.CamelCaseSlice(message.TypeName())
+	names := make(map[string]bool)
+	for _, field := range message.Field {
+		fieldname := generator.CamelCase(*field.Name)
+		if field.IsMessage() && gogoproto.IsEmbed(field) {
+			desc := p.ObjectNamed(field.GetTypeName())
+			moreNames := p.checkNameSpace(desc.(*generator.Descriptor))
+			for another := range moreNames {
+				if names[another] {
+					fmt.Fprintf(os.Stderr, "ERROR: duplicate embedded fieldname %v in type %v\n", fieldname, ccTypeName)
+					os.Exit(1)
+				}
+				names[another] = true
+			}
+		} else {
+			if names[fieldname] {
+				fmt.Fprintf(os.Stderr, "ERROR: duplicate embedded fieldname %v in type %v\n", fieldname, ccTypeName)
+				os.Exit(1)
+			}
+			names[fieldname] = true
+		}
+	}
+	return names
+}
+
+func (p *plugin) checkOverwrite(message *generator.Descriptor, enablers map[string]gogoproto.EnableFunc) {
+	ccTypeName := generator.CamelCaseSlice(message.TypeName())
+	names := []string{}
+	for name := range enablers {
+		names = append(names, name)
+	}
+	for _, field := range message.Field {
+		if field.IsMessage() && gogoproto.IsEmbed(field) {
+			fieldname := generator.CamelCase(*field.Name)
+			desc := p.ObjectNamed(field.GetTypeName())
+			msg := desc.(*generator.Descriptor)
+			for errStr, enabled := range enablers {
+				if enabled(msg.File().FileDescriptorProto, msg.DescriptorProto) {
+					fmt.Fprintf(os.Stderr, "WARNING: found non-%v %v with embedded %v %v\n", names, ccTypeName, errStr, fieldname)
+				}
+			}
+			p.checkOverwrite(msg, enablers)
+		}
+	}
+}
+
+func (p *plugin) checkRepeated(message *generator.Descriptor) {
+	ccTypeName := generator.CamelCaseSlice(message.TypeName())
+	for _, field := range message.Field {
+		if !gogoproto.IsEmbed(field) {
+			continue
+		}
+		if field.IsBytes() {
+			fieldname := generator.CamelCase(*field.Name)
+			fmt.Fprintf(os.Stderr, "ERROR: found embedded bytes field %s in message %s\n", fieldname, ccTypeName)
+			os.Exit(1)
+		}
+		if !field.IsRepeated() {
+			continue
+		}
+		fieldname := generator.CamelCase(*field.Name)
+		fmt.Fprintf(os.Stderr, "ERROR: found repeated embedded field %s in message %s\n", fieldname, ccTypeName)
+		os.Exit(1)
+	}
+}
+
+func (p *plugin) GenerateImports(*generator.FileDescriptor) {}
+
+func init() {
+	generator.RegisterPlugin(NewPlugin())
+}

vendor/github.com/gogo/protobuf/plugin/enumstringer/enumstringer.go

@@ -0,0 +1,104 @@
+// 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 enumstringer (experimental) plugin generates a String method for each enum.
+
+It is enabled by the following extensions:
+
+  - enum_stringer
+  - enum_stringer_all
+
+This package is subject to change.
+
+*/
+package enumstringer
+
+import (
+	"github.com/gogo/protobuf/gogoproto"
+	"github.com/gogo/protobuf/protoc-gen-gogo/generator"
+)
+
+type enumstringer struct {
+	*generator.Generator
+	generator.PluginImports
+	atleastOne bool
+	localName  string
+}
+
+func NewEnumStringer() *enumstringer {
+	return &enumstringer{}
+}
+
+func (p *enumstringer) Name() string {
+	return "enumstringer"
+}
+
+func (p *enumstringer) Init(g *generator.Generator) {
+	p.Generator = g
+}
+
+func (p *enumstringer) Generate(file *generator.FileDescriptor) {
+	p.PluginImports = generator.NewPluginImports(p.Generator)
+	p.atleastOne = false
+
+	p.localName = generator.FileName(file)
+
+	strconvPkg := p.NewImport("strconv")
+
+	for _, enum := range file.Enums() {
+		if !gogoproto.IsEnumStringer(file.FileDescriptorProto, enum.EnumDescriptorProto) {
+			continue
+		}
+		if gogoproto.IsGoEnumStringer(file.FileDescriptorProto, enum.EnumDescriptorProto) {
+			panic("Go enum stringer conflicts with new enumstringer plugin: please use gogoproto.goproto_enum_stringer or gogoproto.goproto_enum_string_all and set it to false")
+		}
+		p.atleastOne = true
+		ccTypeName := generator.CamelCaseSlice(enum.TypeName())
+		p.P("func (x ", ccTypeName, ") String() string {")
+		p.In()
+		p.P(`s, ok := `, ccTypeName, `_name[int32(x)]`)
+		p.P(`if ok {`)
+		p.In()
+		p.P(`return s`)
+		p.Out()
+		p.P(`}`)
+		p.P(`return `, strconvPkg.Use(), `.Itoa(int(x))`)
+		p.Out()
+		p.P(`}`)
+	}
+
+	if !p.atleastOne {
+		return
+	}
+
+}
+
+func init() {
+	generator.RegisterPlugin(NewEnumStringer())
+}

vendor/github.com/gogo/protobuf/plugin/equal/equal.go

@@ -0,0 +1,694 @@
+// 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 equal plugin generates an Equal and a VerboseEqual method for each message.
+These equal methods are quite obvious.
+The only difference is that VerboseEqual returns a non nil error if it is not equal.
+This error contains more detail on exactly which part of the message was not equal to the other message.
+The idea is that this is useful for debugging.
+
+Equal is enabled using the following extensions:
+
+  - equal
+  - equal_all
+
+While VerboseEqual is enable dusing the following extensions:
+
+  - verbose_equal
+  - verbose_equal_all
+
+The equal 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.equal_all) = true;
+  option (gogoproto.verbose_equal_all) = true;
+
+  message B {
+	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 equal plugin, will generate the following code:
+
+	func (this *B) VerboseEqual(that interface{}) error {
+		if that == nil {
+			if this == nil {
+				return nil
+			}
+			return fmt2.Errorf("that == nil && this != nil")
+		}
+
+		that1, ok := that.(*B)
+		if !ok {
+			return fmt2.Errorf("that is not of type *B")
+		}
+		if that1 == nil {
+			if this == nil {
+				return nil
+			}
+			return fmt2.Errorf("that is type *B but is nil && this != nil")
+		} else if this == nil {
+			return fmt2.Errorf("that is type *B but is not nil && this == nil")
+		}
+		if !this.A.Equal(&that1.A) {
+			return fmt2.Errorf("A this(%v) Not Equal that(%v)", this.A, that1.A)
+		}
+		if len(this.G) != len(that1.G) {
+			return fmt2.Errorf("G this(%v) Not Equal that(%v)", len(this.G), len(that1.G))
+		}
+		for i := range this.G {
+			if !this.G[i].Equal(that1.G[i]) {
+				return fmt2.Errorf("G this[%v](%v) Not Equal that[%v](%v)", i, this.G[i], i, that1.G[i])
+			}
+		}
+		if !bytes.Equal(this.XXX_unrecognized, that1.XXX_unrecognized) {
+			return fmt2.Errorf("XXX_unrecognized this(%v) Not Equal that(%v)", this.XXX_unrecognized, that1.XXX_unrecognized)
+		}
+		return nil
+	}
+
+	func (this *B) Equal(that interface{}) bool {
+		if that == nil {
+			return this == nil
+		}
+
+		that1, ok := that.(*B)
+		if !ok {
+			return false
+		}
+		if that1 == nil {
+			return this == nil
+		} else if this == nil {
+			return false
+		}
+		if !this.A.Equal(&that1.A) {
+			return false
+		}
+		if len(this.G) != len(that1.G) {
+			return false
+		}
+		for i := range this.G {
+			if !this.G[i].Equal(that1.G[i]) {
+				return false
+			}
+		}
+		if !bytes.Equal(this.XXX_unrecognized, that1.XXX_unrecognized) {
+			return false
+		}
+		return true
+	}
+
+and the following test code:
+
+	func TestBVerboseEqual(t *testing8.T) {
+		popr := math_rand8.New(math_rand8.NewSource(time8.Now().UnixNano()))
+		p := NewPopulatedB(popr, false)
+		dAtA, err := github_com_gogo_protobuf_proto2.Marshal(p)
+		if err != nil {
+			panic(err)
+		}
+		msg := &B{}
+		if err := github_com_gogo_protobuf_proto2.Unmarshal(dAtA, msg); err != nil {
+			panic(err)
+		}
+		if err := p.VerboseEqual(msg); err != nil {
+			t.Fatalf("%#v !VerboseEqual %#v, since %v", msg, p, err)
+	}
+
+*/
+package equal
+
+import (
+	"github.com/gogo/protobuf/gogoproto"
+	"github.com/gogo/protobuf/proto"
+	descriptor "github.com/gogo/protobuf/protoc-gen-gogo/descriptor"
+	"github.com/gogo/protobuf/protoc-gen-gogo/generator"
+	"github.com/gogo/protobuf/vanity"
+)
+
+type plugin struct {
+	*generator.Generator
+	generator.PluginImports
+	fmtPkg   generator.Single
+	bytesPkg generator.Single
+	protoPkg generator.Single
+}
+
+func NewPlugin() *plugin {
+	return &plugin{}
+}
+
+func (p *plugin) Name() string {
+	return "equal"
+}
+
+func (p *plugin) Init(g *generator.Generator) {
+	p.Generator = g
+}
+
+func (p *plugin) Generate(file *generator.FileDescriptor) {
+	p.PluginImports = generator.NewPluginImports(p.Generator)
+	p.fmtPkg = p.NewImport("fmt")
+	p.bytesPkg = p.NewImport("bytes")
+	p.protoPkg = p.NewImport("github.com/gogo/protobuf/proto")
+
+	for _, msg := range file.Messages() {
+		if msg.DescriptorProto.GetOptions().GetMapEntry() {
+			continue
+		}
+		if gogoproto.HasVerboseEqual(file.FileDescriptorProto, msg.DescriptorProto) {
+			p.generateMessage(file, msg, true)
+		}
+		if gogoproto.HasEqual(file.FileDescriptorProto, msg.DescriptorProto) {
+			p.generateMessage(file, msg, false)
+		}
+	}
+}
+
+func (p *plugin) generateNullableField(fieldname string, verbose bool) {
+	p.P(`if this.`, fieldname, ` != nil && that1.`, fieldname, ` != nil {`)
+	p.In()
+	p.P(`if *this.`, fieldname, ` != *that1.`, fieldname, `{`)
+	p.In()
+	if verbose {
+		p.P(`return `, p.fmtPkg.Use(), `.Errorf("`, fieldname, ` this(%v) Not Equal that(%v)", *this.`, fieldname, `, *that1.`, fieldname, `)`)
+	} else {
+		p.P(`return false`)
+	}
+	p.Out()
+	p.P(`}`)
+	p.Out()
+	p.P(`} else if this.`, fieldname, ` != nil {`)
+	p.In()
+	if verbose {
+		p.P(`return `, p.fmtPkg.Use(), `.Errorf("this.`, fieldname, ` == nil && that.`, fieldname, ` != nil")`)
+	} else {
+		p.P(`return false`)
+	}
+	p.Out()
+	p.P(`} else if that1.`, fieldname, ` != nil {`)
+}
+
+func (p *plugin) generateMsgNullAndTypeCheck(ccTypeName string, verbose bool) {
+	p.P(`if that == nil {`)
+	p.In()
+	if verbose {
+		p.P(`if this == nil {`)
+		p.In()
+		p.P(`return nil`)
+		p.Out()
+		p.P(`}`)
+		p.P(`return `, p.fmtPkg.Use(), `.Errorf("that == nil && this != nil")`)
+	} else {
+		p.P(`return this == nil`)
+	}
+	p.Out()
+	p.P(`}`)
+	p.P(``)
+	p.P(`that1, ok := that.(*`, ccTypeName, `)`)
+	p.P(`if !ok {`)
+	p.In()
+	p.P(`that2, ok := that.(`, ccTypeName, `)`)
+	p.P(`if ok {`)
+	p.In()
+	p.P(`that1 = &that2`)
+	p.Out()
+	p.P(`} else {`)
+	p.In()
+	if verbose {
+		p.P(`return `, p.fmtPkg.Use(), `.Errorf("that is not of type *`, ccTypeName, `")`)
+	} else {
+		p.P(`return false`)
+	}
+	p.Out()
+	p.P(`}`)
+	p.Out()
+	p.P(`}`)
+	p.P(`if that1 == nil {`)
+	p.In()
+	if verbose {
+		p.P(`if this == nil {`)
+		p.In()
+		p.P(`return nil`)
+		p.Out()
+		p.P(`}`)
+		p.P(`return `, p.fmtPkg.Use(), `.Errorf("that is type *`, ccTypeName, ` but is nil && this != nil")`)
+	} else {
+		p.P(`return this == nil`)
+	}
+	p.Out()
+	p.P(`} else if this == nil {`)
+	p.In()
+	if verbose {
+		p.P(`return `, p.fmtPkg.Use(), `.Errorf("that is type *`, ccTypeName, ` but is not nil && this == nil")`)
+	} else {
+		p.P(`return false`)
+	}
+	p.Out()
+	p.P(`}`)
+}
+
+func (p *plugin) generateField(file *generator.FileDescriptor, message *generator.Descriptor, field *descriptor.FieldDescriptorProto, verbose bool) {
+	proto3 := gogoproto.IsProto3(file.FileDescriptorProto)
+	fieldname := p.GetOneOfFieldName(message, field)
+	repeated := field.IsRepeated()
+	ctype := gogoproto.IsCustomType(field)
+	nullable := gogoproto.IsNullable(field)
+	isNormal := (gogoproto.IsStdDuration(field) ||
+		gogoproto.IsStdDouble(field) ||
+		gogoproto.IsStdFloat(field) ||
+		gogoproto.IsStdInt64(field) ||
+		gogoproto.IsStdUInt64(field) ||
+		gogoproto.IsStdInt32(field) ||
+		gogoproto.IsStdUInt32(field) ||
+		gogoproto.IsStdBool(field) ||
+		gogoproto.IsStdString(field))
+	isBytes := gogoproto.IsStdBytes(field)
+	isTimestamp := gogoproto.IsStdTime(field)
+	// oneof := field.OneofIndex != nil
+	if !repeated {
+		if ctype || isTimestamp {
+			if nullable {
+				p.P(`if that1.`, fieldname, ` == nil {`)
+				p.In()
+				p.P(`if this.`, fieldname, ` != nil {`)
+				p.In()
+				if verbose {
+					p.P(`return `, p.fmtPkg.Use(), `.Errorf("this.`, fieldname, ` != nil && that1.`, fieldname, ` == nil")`)
+				} else {
+					p.P(`return false`)
+				}
+				p.Out()
+				p.P(`}`)
+				p.Out()
+				p.P(`} else if !this.`, fieldname, `.Equal(*that1.`, fieldname, `) {`)
+			} else {
+				p.P(`if !this.`, fieldname, `.Equal(that1.`, fieldname, `) {`)
+			}
+			p.In()
+			if verbose {
+				p.P(`return `, p.fmtPkg.Use(), `.Errorf("`, fieldname, ` this(%v) Not Equal that(%v)", this.`, fieldname, `, that1.`, fieldname, `)`)
+			} else {
+				p.P(`return false`)
+			}
+			p.Out()
+			p.P(`}`)
+		} else if isNormal {
+			if nullable {
+				p.generateNullableField(fieldname, verbose)
+			} else {
+				p.P(`if this.`, fieldname, ` != that1.`, fieldname, `{`)
+			}
+			p.In()
+			if verbose {
+				p.P(`return `, p.fmtPkg.Use(), `.Errorf("`, fieldname, ` this(%v) Not Equal that(%v)", this.`, fieldname, `, that1.`, fieldname, `)`)
+			} else {
+				p.P(`return false`)
+			}
+			p.Out()
+			p.P(`}`)
+		} else if isBytes {
+			if nullable {
+				p.P(`if that1.`, fieldname, ` == nil {`)
+				p.In()
+				p.P(`if this.`, fieldname, ` != nil {`)
+				p.In()
+				if verbose {
+					p.P(`return `, p.fmtPkg.Use(), `.Errorf("this.`, fieldname, ` != nil && that1.`, fieldname, ` == nil")`)
+				} else {
+					p.P(`return false`)
+				}
+				p.Out()
+				p.P(`}`)
+				p.Out()
+				p.P(`} else if !`, p.bytesPkg.Use(), `.Equal(*this.`, fieldname, `, *that1.`, fieldname, `) {`)
+			} else {
+				p.P(`if !`, p.bytesPkg.Use(), `.Equal(this.`, fieldname, `, that1.`, fieldname, `) {`)
+			}
+			p.In()
+			if verbose {
+				p.P(`return `, p.fmtPkg.Use(), `.Errorf("`, fieldname, ` this(%v) Not Equal that(%v)", this.`, fieldname, `, that1.`, fieldname, `)`)
+			} else {
+				p.P(`return false`)
+			}
+			p.Out()
+			p.P(`}`)
+		} else {
+			if field.IsMessage() || p.IsGroup(field) {
+				if nullable {
+					p.P(`if !this.`, fieldname, `.Equal(that1.`, fieldname, `) {`)
+				} else {
+					p.P(`if !this.`, fieldname, `.Equal(&that1.`, fieldname, `) {`)
+				}
+			} else if field.IsBytes() {
+				p.P(`if !`, p.bytesPkg.Use(), `.Equal(this.`, fieldname, `, that1.`, fieldname, `) {`)
+			} else if field.IsString() {
+				if nullable && !proto3 {
+					p.generateNullableField(fieldname, verbose)
+				} else {
+					p.P(`if this.`, fieldname, ` != that1.`, fieldname, `{`)
+				}
+			} else {
+				if nullable && !proto3 {
+					p.generateNullableField(fieldname, verbose)
+				} else {
+					p.P(`if this.`, fieldname, ` != that1.`, fieldname, `{`)
+				}
+			}
+			p.In()
+			if verbose {
+				p.P(`return `, p.fmtPkg.Use(), `.Errorf("`, fieldname, ` this(%v) Not Equal that(%v)", this.`, fieldname, `, that1.`, fieldname, `)`)
+			} else {
+				p.P(`return false`)
+			}
+			p.Out()
+			p.P(`}`)
+		}
+	} else {
+		p.P(`if len(this.`, fieldname, `) != len(that1.`, fieldname, `) {`)
+		p.In()
+		if verbose {
+			p.P(`return `, p.fmtPkg.Use(), `.Errorf("`, fieldname, ` this(%v) Not Equal that(%v)", len(this.`, fieldname, `), len(that1.`, fieldname, `))`)
+		} else {
+			p.P(`return false`)
+		}
+		p.Out()
+		p.P(`}`)
+		p.P(`for i := range this.`, fieldname, ` {`)
+		p.In()
+		if ctype && !p.IsMap(field) {
+			p.P(`if !this.`, fieldname, `[i].Equal(that1.`, fieldname, `[i]) {`)
+		} else if isTimestamp {
+			if nullable {
+				p.P(`if !this.`, fieldname, `[i].Equal(*that1.`, fieldname, `[i]) {`)
+			} else {
+				p.P(`if !this.`, fieldname, `[i].Equal(that1.`, fieldname, `[i]) {`)
+			}
+		} else if isNormal {
+			if nullable {
+				p.P(`if dthis, dthat := this.`, fieldname, `[i], that1.`, fieldname, `[i]; (dthis != nil && dthat != nil && *dthis != *dthat) || (dthis != nil && dthat == nil) || (dthis == nil && dthat != nil)  {`)
+			} else {
+				p.P(`if this.`, fieldname, `[i] != that1.`, fieldname, `[i] {`)
+			}
+		} else if isBytes {
+			if nullable {
+				p.P(`if !`, p.bytesPkg.Use(), `.Equal(*this.`, fieldname, `[i], *that1.`, fieldname, `[i]) {`)
+			} else {
+				p.P(`if !`, p.bytesPkg.Use(), `.Equal(this.`, fieldname, `[i], that1.`, fieldname, `[i]) {`)
+			}
+		} else {
+			if p.IsMap(field) {
+				m := p.GoMapType(nil, field)
+				valuegoTyp, _ := p.GoType(nil, m.ValueField)
+				valuegoAliasTyp, _ := p.GoType(nil, m.ValueAliasField)
+				nullable, valuegoTyp, valuegoAliasTyp = generator.GoMapValueTypes(field, m.ValueField, valuegoTyp, valuegoAliasTyp)
+
+				mapValue := m.ValueAliasField
+				mapValueNormal := (gogoproto.IsStdDuration(mapValue) ||
+					gogoproto.IsStdDouble(mapValue) ||
+					gogoproto.IsStdFloat(mapValue) ||
+					gogoproto.IsStdInt64(mapValue) ||
+					gogoproto.IsStdUInt64(mapValue) ||
+					gogoproto.IsStdInt32(mapValue) ||
+					gogoproto.IsStdUInt32(mapValue) ||
+					gogoproto.IsStdBool(mapValue) ||
+					gogoproto.IsStdString(mapValue))
+				mapValueBytes := gogoproto.IsStdBytes(mapValue)
+				if mapValue.IsMessage() || p.IsGroup(mapValue) {
+					if nullable && valuegoTyp == valuegoAliasTyp {
+						p.P(`if !this.`, fieldname, `[i].Equal(that1.`, fieldname, `[i]) {`)
+					} else {
+						// Equal() has a pointer receiver, but map value is a value type
+						a := `this.` + fieldname + `[i]`
+						b := `that1.` + fieldname + `[i]`
+						if !mapValueNormal && !mapValueBytes && valuegoTyp != valuegoAliasTyp {
+							// cast back to the type that has the generated methods on it
+							a = `(` + valuegoTyp + `)(` + a + `)`
+							b = `(` + valuegoTyp + `)(` + b + `)`
+						}
+						p.P(`a := `, a)
+						p.P(`b := `, b)
+						if mapValueNormal {
+							if nullable {
+								p.P(`if *a != *b {`)
+							} else {
+								p.P(`if a != b {`)
+							}
+						} else if mapValueBytes {
+							if nullable {
+								p.P(`if !`, p.bytesPkg.Use(), `.Equal(*a, *b) {`)
+							} else {
+								p.P(`if !`, p.bytesPkg.Use(), `.Equal(a, b) {`)
+							}
+						} else if nullable {
+							p.P(`if !a.Equal(b) {`)
+						} else {
+							p.P(`if !(&a).Equal(&b) {`)
+						}
+					}
+				} else if mapValue.IsBytes() {
+					if ctype {
+						if nullable {
+							p.P(`if !this.`, fieldname, `[i].Equal(*that1.`, fieldname, `[i]) { //nullable`)
+						} else {
+							p.P(`if !this.`, fieldname, `[i].Equal(that1.`, fieldname, `[i]) { //not nullable`)
+						}
+					} else {
+						p.P(`if !`, p.bytesPkg.Use(), `.Equal(this.`, fieldname, `[i], that1.`, fieldname, `[i]) {`)
+					}
+				} else if mapValue.IsString() {
+					p.P(`if this.`, fieldname, `[i] != that1.`, fieldname, `[i] {`)
+				} else {
+					p.P(`if this.`, fieldname, `[i] != that1.`, fieldname, `[i] {`)
+				}
+			} else if field.IsMessage() || p.IsGroup(field) {
+				if nullable {
+					p.P(`if !this.`, fieldname, `[i].Equal(that1.`, fieldname, `[i]) {`)
+				} else {
+					p.P(`if !this.`, fieldname, `[i].Equal(&that1.`, fieldname, `[i]) {`)
+				}
+			} else if field.IsBytes() {
+				p.P(`if !`, p.bytesPkg.Use(), `.Equal(this.`, fieldname, `[i], that1.`, fieldname, `[i]) {`)
+			} else if field.IsString() {
+				p.P(`if this.`, fieldname, `[i] != that1.`, fieldname, `[i] {`)
+			} else {
+				p.P(`if this.`, fieldname, `[i] != that1.`, fieldname, `[i] {`)
+			}
+		}
+		p.In()
+		if verbose {
+			p.P(`return `, p.fmtPkg.Use(), `.Errorf("`, fieldname, ` this[%v](%v) Not Equal that[%v](%v)", i, this.`, fieldname, `[i], i, that1.`, fieldname, `[i])`)
+		} else {
+			p.P(`return false`)
+		}
+		p.Out()
+		p.P(`}`)
+		p.Out()
+		p.P(`}`)
+	}
+}
+
+func (p *plugin) generateMessage(file *generator.FileDescriptor, message *generator.Descriptor, verbose bool) {
+	ccTypeName := generator.CamelCaseSlice(message.TypeName())
+	if verbose {
+		p.P(`func (this *`, ccTypeName, `) VerboseEqual(that interface{}) error {`)
+	} else {
+		p.P(`func (this *`, ccTypeName, `) Equal(that interface{}) bool {`)
+	}
+	p.In()
+	p.generateMsgNullAndTypeCheck(ccTypeName, verbose)
+	oneofs := make(map[string]struct{})
+
+	for _, field := range message.Field {
+		oneof := field.OneofIndex != nil
+		if oneof {
+			fieldname := p.GetFieldName(message, field)
+			if _, ok := oneofs[fieldname]; ok {
+				continue
+			} else {
+				oneofs[fieldname] = struct{}{}
+			}
+			p.P(`if that1.`, fieldname, ` == nil {`)
+			p.In()
+			p.P(`if this.`, fieldname, ` != nil {`)
+			p.In()
+			if verbose {
+				p.P(`return `, p.fmtPkg.Use(), `.Errorf("this.`, fieldname, ` != nil && that1.`, fieldname, ` == nil")`)
+			} else {
+				p.P(`return false`)
+			}
+			p.Out()
+			p.P(`}`)
+			p.Out()
+			p.P(`} else if this.`, fieldname, ` == nil {`)
+			p.In()
+			if verbose {
+				p.P(`return `, p.fmtPkg.Use(), `.Errorf("this.`, fieldname, ` == nil && that1.`, fieldname, ` != nil")`)
+			} else {
+				p.P(`return false`)
+			}
+			p.Out()
+			if verbose {
+				p.P(`} else if err := this.`, fieldname, `.VerboseEqual(that1.`, fieldname, `); err != nil {`)
+			} else {
+				p.P(`} else if !this.`, fieldname, `.Equal(that1.`, fieldname, `) {`)
+			}
+			p.In()
+			if verbose {
+				p.P(`return err`)
+			} else {
+				p.P(`return false`)
+			}
+			p.Out()
+			p.P(`}`)
+		} else {
+			p.generateField(file, message, field, verbose)
+		}
+	}
+	if message.DescriptorProto.HasExtension() {
+		if gogoproto.HasExtensionsMap(file.FileDescriptorProto, message.DescriptorProto) {
+			fieldname := "XXX_InternalExtensions"
+			p.P(`thismap := `, p.protoPkg.Use(), `.GetUnsafeExtensionsMap(this)`)
+			p.P(`thatmap := `, p.protoPkg.Use(), `.GetUnsafeExtensionsMap(that1)`)
+			p.P(`for k, v := range thismap {`)
+			p.In()
+			p.P(`if v2, ok := thatmap[k]; ok {`)
+			p.In()
+			p.P(`if !v.Equal(&v2) {`)
+			p.In()
+			if verbose {
+				p.P(`return `, p.fmtPkg.Use(), `.Errorf("`, fieldname, ` this[%v](%v) Not Equal that[%v](%v)", k, thismap[k], k, thatmap[k])`)
+			} else {
+				p.P(`return false`)
+			}
+			p.Out()
+			p.P(`}`)
+			p.Out()
+			p.P(`} else  {`)
+			p.In()
+			if verbose {
+				p.P(`return `, p.fmtPkg.Use(), `.Errorf("`, fieldname, `[%v] Not In that", k)`)
+			} else {
+				p.P(`return false`)
+			}
+			p.Out()
+			p.P(`}`)
+			p.Out()
+			p.P(`}`)
+
+			p.P(`for k, _ := range thatmap {`)
+			p.In()
+			p.P(`if _, ok := thismap[k]; !ok {`)
+			p.In()
+			if verbose {
+				p.P(`return `, p.fmtPkg.Use(), `.Errorf("`, fieldname, `[%v] Not In this", k)`)
+			} else {
+				p.P(`return false`)
+			}
+			p.Out()
+			p.P(`}`)
+			p.Out()
+			p.P(`}`)
+		} else {
+			fieldname := "XXX_extensions"
+			p.P(`if !`, p.bytesPkg.Use(), `.Equal(this.`, fieldname, `, that1.`, fieldname, `) {`)
+			p.In()
+			if verbose {
+				p.P(`return `, p.fmtPkg.Use(), `.Errorf("`, fieldname, ` this(%v) Not Equal that(%v)", this.`, fieldname, `, that1.`, fieldname, `)`)
+			} else {
+				p.P(`return false`)
+			}
+			p.Out()
+			p.P(`}`)
+		}
+	}
+	if gogoproto.HasUnrecognized(file.FileDescriptorProto, message.DescriptorProto) {
+		fieldname := "XXX_unrecognized"
+		p.P(`if !`, p.bytesPkg.Use(), `.Equal(this.`, fieldname, `, that1.`, fieldname, `) {`)
+		p.In()
+		if verbose {
+			p.P(`return `, p.fmtPkg.Use(), `.Errorf("`, fieldname, ` this(%v) Not Equal that(%v)", this.`, fieldname, `, that1.`, fieldname, `)`)
+		} else {
+			p.P(`return false`)
+		}
+		p.Out()
+		p.P(`}`)
+	}
+	if verbose {
+		p.P(`return nil`)
+	} else {
+		p.P(`return true`)
+	}
+	p.Out()
+	p.P(`}`)
+
+	//Generate Equal methods for oneof fields
+	m := proto.Clone(message.DescriptorProto).(*descriptor.DescriptorProto)
+	for _, field := range m.Field {
+		oneof := field.OneofIndex != nil
+		if !oneof {
+			continue
+		}
+		ccTypeName := p.OneOfTypeName(message, field)
+		if verbose {
+			p.P(`func (this *`, ccTypeName, `) VerboseEqual(that interface{}) error {`)
+		} else {
+			p.P(`func (this *`, ccTypeName, `) Equal(that interface{}) bool {`)
+		}
+		p.In()
+
+		p.generateMsgNullAndTypeCheck(ccTypeName, verbose)
+		vanity.TurnOffNullableForNativeTypes(field)
+		p.generateField(file, message, field, verbose)
+
+		if verbose {
+			p.P(`return nil`)
+		} else {
+			p.P(`return true`)
+		}
+		p.Out()
+		p.P(`}`)
+	}
+}
+
+func init() {
+	generator.RegisterPlugin(NewPlugin())
+}

vendor/github.com/gogo/protobuf/plugin/equal/equaltest.go

@@ -0,0 +1,109 @@
+// 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.
+
+package equal
+
+import (
+	"github.com/gogo/protobuf/gogoproto"
+	"github.com/gogo/protobuf/plugin/testgen"
+	"github.com/gogo/protobuf/protoc-gen-gogo/generator"
+)
+
+type test struct {
+	*generator.Generator
+}
+
+func NewTest(g *generator.Generator) testgen.TestPlugin {
+	return &test{g}
+}
+
+func (p *test) Generate(imports generator.PluginImports, file *generator.FileDescriptor) bool {
+	used := false
+	randPkg := imports.NewImport("math/rand")
+	timePkg := imports.NewImport("time")
+	testingPkg := imports.NewImport("testing")
+	protoPkg := imports.NewImport("github.com/gogo/protobuf/proto")
+	unsafePkg := imports.NewImport("unsafe")
+	if !gogoproto.ImportsGoGoProto(file.FileDescriptorProto) {
+		protoPkg = imports.NewImport("github.com/golang/protobuf/proto")
+	}
+	for _, message := range file.Messages() {
+		ccTypeName := generator.CamelCaseSlice(message.TypeName())
+		if !gogoproto.HasVerboseEqual(file.FileDescriptorProto, message.DescriptorProto) {
+			continue
+		}
+		if message.DescriptorProto.GetOptions().GetMapEntry() {
+			continue
+		}
+
+		if gogoproto.HasTestGen(file.FileDescriptorProto, message.DescriptorProto) {
+			used = true
+			hasUnsafe := gogoproto.IsUnsafeMarshaler(file.FileDescriptorProto, message.DescriptorProto) ||
+				gogoproto.IsUnsafeUnmarshaler(file.FileDescriptorProto, message.DescriptorProto)
+			p.P(`func Test`, ccTypeName, `VerboseEqual(t *`, testingPkg.Use(), `.T) {`)
+			p.In()
+			if hasUnsafe {
+				if hasUnsafe {
+					p.P(`var bigendian uint32 = 0x01020304`)
+					p.P(`if *(*byte)(`, unsafePkg.Use(), `.Pointer(&bigendian)) == 1 {`)
+					p.In()
+					p.P(`t.Skip("unsafe does not work on big endian architectures")`)
+					p.Out()
+					p.P(`}`)
+				}
+			}
+			p.P(`popr := `, randPkg.Use(), `.New(`, randPkg.Use(), `.NewSource(`, timePkg.Use(), `.Now().UnixNano()))`)
+			p.P(`p := NewPopulated`, ccTypeName, `(popr, false)`)
+			p.P(`dAtA, err := `, protoPkg.Use(), `.Marshal(p)`)
+			p.P(`if err != nil {`)
+			p.In()
+			p.P(`panic(err)`)
+			p.Out()
+			p.P(`}`)
+			p.P(`msg := &`, ccTypeName, `{}`)
+			p.P(`if err := `, protoPkg.Use(), `.Unmarshal(dAtA, msg); err != nil {`)
+			p.In()
+			p.P(`panic(err)`)
+			p.Out()
+			p.P(`}`)
+			p.P(`if err := p.VerboseEqual(msg); err != nil {`)
+			p.In()
+			p.P(`t.Fatalf("%#v !VerboseEqual %#v, since %v", msg, p, err)`)
+			p.Out()
+			p.P(`}`)
+			p.Out()
+			p.P(`}`)
+		}
+
+	}
+	return used
+}
+
+func init() {
+	testgen.RegisterTestPlugin(NewTest)
+}

vendor/github.com/gogo/protobuf/plugin/face/face.go

@@ -0,0 +1,233 @@
+// 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 face plugin generates a function will be generated which can convert a structure which satisfies an interface (face) to the specified structure.
+This interface contains getters for each of the fields in the struct.
+The specified struct is also generated with the getters.
+This means that getters should be turned off so as not to conflict with face getters.
+This allows it to satisfy its own face.
+
+It is enabled by the following extensions:
+
+  - face
+  - face_all
+
+Turn off getters by using the following extensions:
+
+  - getters
+  - getters_all
+
+The face 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:
+
+  message A {
+	option (gogoproto.face) = true;
+	option (gogoproto.goproto_getters) = false;
+	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 face plugin, will generate the following code:
+
+	type AFace interface {
+		Proto() github_com_gogo_protobuf_proto.Message
+		GetDescription() string
+		GetNumber() int64
+		GetId() github_com_gogo_protobuf_test_custom.Uuid
+	}
+
+	func (this *A) Proto() github_com_gogo_protobuf_proto.Message {
+		return this
+	}
+
+	func (this *A) TestProto() github_com_gogo_protobuf_proto.Message {
+		return NewAFromFace(this)
+	}
+
+	func (this *A) GetDescription() string {
+		return this.Description
+	}
+
+	func (this *A) GetNumber() int64 {
+		return this.Number
+	}
+
+	func (this *A) GetId() github_com_gogo_protobuf_test_custom.Uuid {
+		return this.Id
+	}
+
+	func NewAFromFace(that AFace) *A {
+		this := &A{}
+		this.Description = that.GetDescription()
+		this.Number = that.GetNumber()
+		this.Id = that.GetId()
+		return this
+	}
+
+and the following test code:
+
+	func TestAFace(t *testing7.T) {
+		popr := math_rand7.New(math_rand7.NewSource(time7.Now().UnixNano()))
+		p := NewPopulatedA(popr, true)
+		msg := p.TestProto()
+		if !p.Equal(msg) {
+			t.Fatalf("%#v !Face Equal %#v", msg, p)
+		}
+	}
+
+The struct A, representing the message, will also be generated just like always.
+As you can see A satisfies its own Face, AFace.
+
+Creating another struct which satisfies AFace is very easy.
+Simply create all these methods specified in AFace.
+Implementing The Proto method is done with the helper function NewAFromFace:
+
+	func (this *MyStruct) Proto() proto.Message {
+	  return NewAFromFace(this)
+	}
+
+just the like TestProto method which is used to test the NewAFromFace function.
+
+*/
+package face
+
+import (
+	"github.com/gogo/protobuf/gogoproto"
+	"github.com/gogo/protobuf/protoc-gen-gogo/generator"
+)
+
+type plugin struct {
+	*generator.Generator
+	generator.PluginImports
+}
+
+func NewPlugin() *plugin {
+	return &plugin{}
+}
+
+func (p *plugin) Name() string {
+	return "face"
+}
+
+func (p *plugin) Init(g *generator.Generator) {
+	p.Generator = g
+}
+
+func (p *plugin) Generate(file *generator.FileDescriptor) {
+	p.PluginImports = generator.NewPluginImports(p.Generator)
+	protoPkg := p.NewImport("github.com/gogo/protobuf/proto")
+	if !gogoproto.ImportsGoGoProto(file.FileDescriptorProto) {
+		protoPkg = p.NewImport("github.com/golang/protobuf/proto")
+	}
+	for _, message := range file.Messages() {
+		if !gogoproto.IsFace(file.FileDescriptorProto, message.DescriptorProto) {
+			continue
+		}
+		if message.DescriptorProto.GetOptions().GetMapEntry() {
+			continue
+		}
+		if message.DescriptorProto.HasExtension() {
+			panic("face does not support message with extensions")
+		}
+		if gogoproto.HasGoGetters(file.FileDescriptorProto, message.DescriptorProto) {
+			panic("face requires getters to be disabled please use gogoproto.getters or gogoproto.getters_all and set it to false")
+		}
+		ccTypeName := generator.CamelCaseSlice(message.TypeName())
+		p.P(`type `, ccTypeName, `Face interface{`)
+		p.In()
+		p.P(`Proto() `, protoPkg.Use(), `.Message`)
+		for _, field := range message.Field {
+			fieldname := p.GetFieldName(message, field)
+			goTyp, _ := p.GoType(message, field)
+			if p.IsMap(field) {
+				m := p.GoMapType(nil, field)
+				goTyp = m.GoType
+			}
+			p.P(`Get`, fieldname, `() `, goTyp)
+		}
+		p.Out()
+		p.P(`}`)
+		p.P(``)
+		p.P(`func (this *`, ccTypeName, `) Proto() `, protoPkg.Use(), `.Message {`)
+		p.In()
+		p.P(`return this`)
+		p.Out()
+		p.P(`}`)
+		p.P(``)
+		p.P(`func (this *`, ccTypeName, `) TestProto() `, protoPkg.Use(), `.Message {`)
+		p.In()
+		p.P(`return New`, ccTypeName, `FromFace(this)`)
+		p.Out()
+		p.P(`}`)
+		p.P(``)
+		for _, field := range message.Field {
+			fieldname := p.GetFieldName(message, field)
+			goTyp, _ := p.GoType(message, field)
+			if p.IsMap(field) {
+				m := p.GoMapType(nil, field)
+				goTyp = m.GoType
+			}
+			p.P(`func (this *`, ccTypeName, `) Get`, fieldname, `() `, goTyp, `{`)
+			p.In()
+			p.P(` return this.`, fieldname)
+			p.Out()
+			p.P(`}`)
+			p.P(``)
+		}
+		p.P(``)
+		p.P(`func New`, ccTypeName, `FromFace(that `, ccTypeName, `Face) *`, ccTypeName, ` {`)
+		p.In()
+		p.P(`this := &`, ccTypeName, `{}`)
+		for _, field := range message.Field {
+			fieldname := p.GetFieldName(message, field)
+			p.P(`this.`, fieldname, ` = that.Get`, fieldname, `()`)
+		}
+		p.P(`return this`)
+		p.Out()
+		p.P(`}`)
+		p.P(``)
+	}
+}
+
+func init() {
+	generator.RegisterPlugin(NewPlugin())
+}

vendor/github.com/gogo/protobuf/plugin/face/facetest.go

@@ -0,0 +1,82 @@
+// 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.
+
+package face
+
+import (
+	"github.com/gogo/protobuf/gogoproto"
+	"github.com/gogo/protobuf/plugin/testgen"
+	"github.com/gogo/protobuf/protoc-gen-gogo/generator"
+)
+
+type test struct {
+	*generator.Generator
+}
+
+func NewTest(g *generator.Generator) testgen.TestPlugin {
+	return &test{g}
+}
+
+func (p *test) Generate(imports generator.PluginImports, file *generator.FileDescriptor) bool {
+	used := false
+	randPkg := imports.NewImport("math/rand")
+	timePkg := imports.NewImport("time")
+	testingPkg := imports.NewImport("testing")
+	for _, message := range file.Messages() {
+		ccTypeName := generator.CamelCaseSlice(message.TypeName())
+		if !gogoproto.IsFace(file.FileDescriptorProto, message.DescriptorProto) {
+			continue
+		}
+		if message.DescriptorProto.GetOptions().GetMapEntry() {
+			continue
+		}
+
+		if gogoproto.HasTestGen(file.FileDescriptorProto, message.DescriptorProto) {
+			used = true
+
+			p.P(`func Test`, ccTypeName, `Face(t *`, testingPkg.Use(), `.T) {`)
+			p.In()
+			p.P(`popr := `, randPkg.Use(), `.New(`, randPkg.Use(), `.NewSource(`, timePkg.Use(), `.Now().UnixNano()))`)
+			p.P(`p := NewPopulated`, ccTypeName, `(popr, true)`)
+			p.P(`msg := p.TestProto()`)
+			p.P(`if !p.Equal(msg) {`)
+			p.In()
+			p.P(`t.Fatalf("%#v !Face Equal %#v", msg, p)`)
+			p.Out()
+			p.P(`}`)
+			p.Out()
+			p.P(`}`)
+		}
+
+	}
+	return used
+}
+
+func init() {
+	testgen.RegisterTestPlugin(NewTest)
+}

vendor/github.com/gogo/protobuf/plugin/gostring/gostring.go

@@ -0,0 +1,386 @@
+// 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 gostring plugin generates a GoString method for each message.
+The GoString method is called whenever you use a fmt.Printf as such:
+
+  fmt.Printf("%#v", mymessage)
+
+or whenever you actually call GoString()
+The output produced by the GoString method can be copied from the output into code and used to set a variable.
+It is totally valid Go Code and is populated exactly as the struct that was printed out.
+
+It is enabled by the following extensions:
+
+  - gostring
+  - gostring_all
+
+The gostring 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.gostring_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 gostring plugin, will generate the following code:
+
+  func (this *A) GoString() string {
+	if this == nil {
+		return "nil"
+	}
+	s := strings1.Join([]string{`&test.A{` + `Description:` + fmt1.Sprintf("%#v", this.Description), `Number:` + fmt1.Sprintf("%#v", this.Number), `Id:` + fmt1.Sprintf("%#v", this.Id), `XXX_unrecognized:` + fmt1.Sprintf("%#v", this.XXX_unrecognized) + `}`}, ", ")
+	return s
+  }
+
+and the following test code:
+
+	func TestAGoString(t *testing6.T) {
+		popr := math_rand6.New(math_rand6.NewSource(time6.Now().UnixNano()))
+		p := NewPopulatedA(popr, false)
+		s1 := p.GoString()
+		s2 := fmt2.Sprintf("%#v", p)
+		if s1 != s2 {
+			t.Fatalf("GoString want %v got %v", s1, s2)
+		}
+		_, err := go_parser.ParseExpr(s1)
+		if err != nil {
+			panic(err)
+		}
+	}
+
+Typically fmt.Printf("%#v") will stop to print when it reaches a pointer and
+not print their values, while the generated GoString method will always print all values, recursively.
+
+*/
+package gostring
+
+import (
+	"fmt"
+	"os"
+	"strconv"
+	"strings"
+
+	"github.com/gogo/protobuf/gogoproto"
+	"github.com/gogo/protobuf/protoc-gen-gogo/generator"
+)
+
+type gostring struct {
+	*generator.Generator
+	generator.PluginImports
+	atleastOne bool
+	localName  string
+	overwrite  bool
+}
+
+func NewGoString() *gostring {
+	return &gostring{}
+}
+
+func (p *gostring) Name() string {
+	return "gostring"
+}
+
+func (p *gostring) Overwrite() {
+	p.overwrite = true
+}
+
+func (p *gostring) Init(g *generator.Generator) {
+	p.Generator = g
+}
+
+func (p *gostring) 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")
+	protoPkg := p.NewImport("github.com/gogo/protobuf/proto")
+	if !gogoproto.ImportsGoGoProto(file.FileDescriptorProto) {
+		protoPkg = p.NewImport("github.com/golang/protobuf/proto")
+	}
+	sortPkg := p.NewImport("sort")
+	strconvPkg := p.NewImport("strconv")
+	reflectPkg := p.NewImport("reflect")
+	sortKeysPkg := p.NewImport("github.com/gogo/protobuf/sortkeys")
+
+	extensionToGoStringUsed := false
+	for _, message := range file.Messages() {
+		if !p.overwrite && !gogoproto.HasGoString(file.FileDescriptorProto, message.DescriptorProto) {
+			continue
+		}
+		if message.DescriptorProto.GetOptions().GetMapEntry() {
+			continue
+		}
+		p.atleastOne = true
+		packageName := file.GoPackageName()
+
+		ccTypeName := generator.CamelCaseSlice(message.TypeName())
+		p.P(`func (this *`, ccTypeName, `) GoString() string {`)
+		p.In()
+		p.P(`if this == nil {`)
+		p.In()
+		p.P(`return "nil"`)
+		p.Out()
+		p.P(`}`)
+
+		p.P(`s := make([]string, 0, `, strconv.Itoa(len(message.Field)+4), `)`)
+		p.P(`s = append(s, "&`, packageName, ".", 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(`if this.`, fieldname, ` != nil {`)
+				p.In()
+				p.P(`s = append(s, "`, fieldname, `: " + `, fmtPkg.Use(), `.Sprintf("%#v", this.`, fieldname, `) + ",\n")`)
+				p.Out()
+				p.P(`}`)
+			} else if p.IsMap(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(`if this.`, fieldname, ` != nil {`)
+				p.In()
+				p.P(`s = append(s, "`, fieldname, `: " + `, mapName, `+ ",\n")`)
+				p.Out()
+				p.P(`}`)
+			} else if (field.IsMessage() && !gogoproto.IsCustomType(field) && !gogoproto.IsStdType(field)) || p.IsGroup(field) {
+				if nullable || repeated {
+					p.P(`if this.`, fieldname, ` != nil {`)
+					p.In()
+				}
+				if nullable {
+					p.P(`s = append(s, "`, fieldname, `: " + `, fmtPkg.Use(), `.Sprintf("%#v", this.`, fieldname, `) + ",\n")`)
+				} else if repeated {
+					if nullable {
+						p.P(`s = append(s, "`, fieldname, `: " + `, fmtPkg.Use(), `.Sprintf("%#v", this.`, fieldname, `) + ",\n")`)
+					} else {
+						goTyp, _ := p.GoType(message, field)
+						goTyp = strings.Replace(goTyp, "[]", "", 1)
+						p.P("vs := make([]*", goTyp, ", len(this.", fieldname, "))")
+						p.P("for i := range vs {")
+						p.In()
+						p.P("vs[i] = &this.", fieldname, "[i]")
+						p.Out()
+						p.P("}")
+						p.P(`s = append(s, "`, fieldname, `: " + `, fmtPkg.Use(), `.Sprintf("%#v", vs) + ",\n")`)
+					}
+				} else {
+					p.P(`s = append(s, "`, fieldname, `: " + `, stringsPkg.Use(), `.Replace(this.`, fieldname, `.GoString()`, ",`&`,``,1)", ` + ",\n")`)
+				}
+				if nullable || repeated {
+					p.Out()
+					p.P(`}`)
+				}
+			} else {
+				if !proto3 && (nullable || repeated) {
+					p.P(`if this.`, fieldname, ` != nil {`)
+					p.In()
+				}
+				if field.IsEnum() {
+					if nullable && !repeated && !proto3 {
+						goTyp, _ := p.GoType(message, field)
+						p.P(`s = append(s, "`, fieldname, `: " + valueToGoString`, p.localName, `(this.`, fieldname, `,"`, generator.GoTypeToName(goTyp), `"`, `) + ",\n")`)
+					} else {
+						p.P(`s = append(s, "`, fieldname, `: " + `, fmtPkg.Use(), `.Sprintf("%#v", this.`, fieldname, `) + ",\n")`)
+					}
+				} else {
+					if nullable && !repeated && !proto3 {
+						goTyp, _ := p.GoType(message, field)
+						p.P(`s = append(s, "`, fieldname, `: " + valueToGoString`, p.localName, `(this.`, fieldname, `,"`, generator.GoTypeToName(goTyp), `"`, `) + ",\n")`)
+					} else {
+						p.P(`s = append(s, "`, fieldname, `: " + `, fmtPkg.Use(), `.Sprintf("%#v", this.`, fieldname, `) + ",\n")`)
+					}
+				}
+				if !proto3 && (nullable || repeated) {
+					p.Out()
+					p.P(`}`)
+				}
+			}
+		}
+		if message.DescriptorProto.HasExtension() {
+			if gogoproto.HasExtensionsMap(file.FileDescriptorProto, message.DescriptorProto) {
+				p.P(`s = append(s, "XXX_InternalExtensions: " + extensionToGoString`, p.localName, `(this) + ",\n")`)
+				extensionToGoStringUsed = true
+			} else {
+				p.P(`if this.XXX_extensions != nil {`)
+				p.In()
+				p.P(`s = append(s, "XXX_extensions: " + `, fmtPkg.Use(), `.Sprintf("%#v", this.XXX_extensions) + ",\n")`)
+				p.Out()
+				p.P(`}`)
+			}
+		}
+		if gogoproto.HasUnrecognized(file.FileDescriptorProto, message.DescriptorProto) {
+			p.P(`if this.XXX_unrecognized != nil {`)
+			p.In()
+			p.P(`s = append(s, "XXX_unrecognized:" + `, fmtPkg.Use(), `.Sprintf("%#v", this.XXX_unrecognized) + ",\n")`)
+			p.Out()
+			p.P(`}`)
+		}
+
+		p.P(`s = append(s, "}")`)
+		p.P(`return `, stringsPkg.Use(), `.Join(s, "")`)
+		p.Out()
+		p.P(`}`)
+
+		//Generate GoString 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, `) GoString() string {`)
+			p.In()
+			p.P(`if this == nil {`)
+			p.In()
+			p.P(`return "nil"`)
+			p.Out()
+			p.P(`}`)
+			fieldname := p.GetOneOfFieldName(message, field)
+			outStr := strings.Join([]string{
+				"s := ",
+				stringsPkg.Use(), ".Join([]string{`&", packageName, ".", ccTypeName, "{` + \n",
+				"`", fieldname, ":` + ", fmtPkg.Use(), `.Sprintf("%#v", this.`, fieldname, `)`,
+				" + `}`",
+				`}`,
+				`,", "`,
+				`)`}, "")
+			p.P(outStr)
+			p.P(`return s`)
+			p.Out()
+			p.P(`}`)
+		}
+	}
+
+	if !p.atleastOne {
+		return
+	}
+
+	p.P(`func valueToGoString`, p.localName, `(v interface{}, typ string) 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("func(v %v) *%v { return &v } ( %#v )", typ, typ, pv)`)
+	p.Out()
+	p.P(`}`)
+
+	if extensionToGoStringUsed {
+		if !gogoproto.ImportsGoGoProto(file.FileDescriptorProto) {
+			fmt.Fprintf(os.Stderr, "The GoString plugin for messages with extensions requires importing gogoprotobuf. Please see file %s", file.GetName())
+			os.Exit(1)
+		}
+		p.P(`func extensionToGoString`, p.localName, `(m `, protoPkg.Use(), `.Message) string {`)
+		p.In()
+		p.P(`e := `, protoPkg.Use(), `.GetUnsafeExtensionsMap(m)`)
+		p.P(`if e == nil { return "nil" }`)
+		p.P(`s := "proto.NewUnsafeXXX_InternalExtensions(map[int32]proto.Extension{"`)
+		p.P(`keys := make([]int, 0, len(e))`)
+		p.P(`for k := range e {`)
+		p.In()
+		p.P(`keys = append(keys, int(k))`)
+		p.Out()
+		p.P(`}`)
+		p.P(sortPkg.Use(), `.Ints(keys)`)
+		p.P(`ss := []string{}`)
+		p.P(`for _, k := range keys {`)
+		p.In()
+		p.P(`ss = append(ss, `, strconvPkg.Use(), `.Itoa(k) + ": " + e[int32(k)].GoString())`)
+		p.Out()
+		p.P(`}`)
+		p.P(`s+=`, stringsPkg.Use(), `.Join(ss, ",") + "})"`)
+		p.P(`return s`)
+		p.Out()
+		p.P(`}`)
+	}
+}
+
+func init() {
+	generator.RegisterPlugin(NewGoString())
+}

vendor/github.com/gogo/protobuf/plugin/gostring/gostringtest.go

@@ -0,0 +1,90 @@
+// 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.
+
+package gostring
+
+import (
+	"github.com/gogo/protobuf/gogoproto"
+	"github.com/gogo/protobuf/plugin/testgen"
+	"github.com/gogo/protobuf/protoc-gen-gogo/generator"
+)
+
+type test struct {
+	*generator.Generator
+}
+
+func NewTest(g *generator.Generator) testgen.TestPlugin {
+	return &test{g}
+}
+
+func (p *test) Generate(imports generator.PluginImports, file *generator.FileDescriptor) bool {
+	used := false
+	randPkg := imports.NewImport("math/rand")
+	timePkg := imports.NewImport("time")
+	testingPkg := imports.NewImport("testing")
+	fmtPkg := imports.NewImport("fmt")
+	parserPkg := imports.NewImport("go/parser")
+	for _, message := range file.Messages() {
+		ccTypeName := generator.CamelCaseSlice(message.TypeName())
+		if !gogoproto.HasGoString(file.FileDescriptorProto, message.DescriptorProto) {
+			continue
+		}
+		if message.DescriptorProto.GetOptions().GetMapEntry() {
+			continue
+		}
+
+		if gogoproto.HasTestGen(file.FileDescriptorProto, message.DescriptorProto) {
+			used = true
+			p.P(`func Test`, ccTypeName, `GoString(t *`, testingPkg.Use(), `.T) {`)
+			p.In()
+			p.P(`popr := `, randPkg.Use(), `.New(`, randPkg.Use(), `.NewSource(`, timePkg.Use(), `.Now().UnixNano()))`)
+			p.P(`p := NewPopulated`, ccTypeName, `(popr, false)`)
+			p.P(`s1 := p.GoString()`)
+			p.P(`s2 := `, fmtPkg.Use(), `.Sprintf("%#v", p)`)
+			p.P(`if s1 != s2 {`)
+			p.In()
+			p.P(`t.Fatalf("GoString want %v got %v", s1, s2)`)
+			p.Out()
+			p.P(`}`)
+			p.P(`_, err := `, parserPkg.Use(), `.ParseExpr(s1)`)
+			p.P(`if err != nil {`)
+			p.In()
+			p.P(`t.Fatal(err)`)
+			p.Out()
+			p.P(`}`)
+			p.Out()
+			p.P(`}`)
+		}
+
+	}
+	return used
+}
+
+func init() {
+	testgen.RegisterTestPlugin(NewTest)
+}

vendor/github.com/gogo/protobuf/plugin/oneofcheck/oneofcheck.go

@@ -0,0 +1,93 @@
+// 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 oneofcheck plugin is used to check whether oneof is not used incorrectly.
+For instance:
+An error is caused if a oneof field:
+  - is used in a face
+  - is an embedded field
+
+*/
+package oneofcheck
+
+import (
+	"fmt"
+	"github.com/gogo/protobuf/gogoproto"
+	"github.com/gogo/protobuf/protoc-gen-gogo/generator"
+	"os"
+)
+
+type plugin struct {
+	*generator.Generator
+}
+
+func NewPlugin() *plugin {
+	return &plugin{}
+}
+
+func (p *plugin) Name() string {
+	return "oneofcheck"
+}
+
+func (p *plugin) Init(g *generator.Generator) {
+	p.Generator = g
+}
+
+func (p *plugin) Generate(file *generator.FileDescriptor) {
+	for _, msg := range file.Messages() {
+		face := gogoproto.IsFace(file.FileDescriptorProto, msg.DescriptorProto)
+		for _, field := range msg.GetField() {
+			if field.OneofIndex == nil {
+				continue
+			}
+			if face {
+				fmt.Fprintf(os.Stderr, "ERROR: field %v.%v cannot be in a face and oneof\n", generator.CamelCase(*msg.Name), generator.CamelCase(*field.Name))
+				os.Exit(1)
+			}
+			if gogoproto.IsEmbed(field) {
+				fmt.Fprintf(os.Stderr, "ERROR: field %v.%v cannot be in an oneof and an embedded field\n", generator.CamelCase(*msg.Name), generator.CamelCase(*field.Name))
+				os.Exit(1)
+			}
+			if !gogoproto.IsNullable(field) {
+				fmt.Fprintf(os.Stderr, "ERROR: field %v.%v cannot be in an oneof and a non-nullable field\n", generator.CamelCase(*msg.Name), generator.CamelCase(*field.Name))
+				os.Exit(1)
+			}
+			if gogoproto.IsUnion(file.FileDescriptorProto, msg.DescriptorProto) {
+				fmt.Fprintf(os.Stderr, "ERROR: field %v.%v cannot be in an oneof and in an union (deprecated)\n", generator.CamelCase(*msg.Name), generator.CamelCase(*field.Name))
+				os.Exit(1)
+			}
+		}
+	}
+}
+
+func (p *plugin) GenerateImports(*generator.FileDescriptor) {}
+
+func init() {
+	generator.RegisterPlugin(NewPlugin())
+}

vendor/github.com/gogo/protobuf/plugin/populate/populate.go

@@ -0,0 +1,815 @@
+// 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 populate plugin generates a NewPopulated function.
+This function returns a newly populated structure.
+
+It is enabled by the following extensions:
+
+  - populate
+  - populate_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.populate_all) = true;
+
+  message B {
+	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 populate plugin, will generate code the following code:
+
+  func NewPopulatedB(r randyExample, easy bool) *B {
+	this := &B{}
+	v2 := NewPopulatedA(r, easy)
+	this.A = *v2
+	if r.Intn(10) != 0 {
+		v3 := r.Intn(10)
+		this.G = make([]github_com_gogo_protobuf_test_custom.Uint128, v3)
+		for i := 0; i < v3; i++ {
+			v4 := github_com_gogo_protobuf_test_custom.NewPopulatedUint128(r)
+			this.G[i] = *v4
+		}
+	}
+	if !easy && r.Intn(10) != 0 {
+		this.XXX_unrecognized = randUnrecognizedExample(r, 3)
+	}
+	return this
+  }
+
+The idea that is useful for testing.
+Most of the other plugins' generated test code uses it.
+You will still be able to use the generated test code of other packages
+if you turn off the popluate plugin and write your own custom NewPopulated function.
+
+If the easy flag is not set the XXX_unrecognized and XXX_extensions fields are also populated.
+These have caused problems with JSON marshalling and unmarshalling tests.
+
+*/
+package populate
+
+import (
+	"fmt"
+	"math"
+	"strconv"
+	"strings"
+
+	"github.com/gogo/protobuf/gogoproto"
+	"github.com/gogo/protobuf/proto"
+	descriptor "github.com/gogo/protobuf/protoc-gen-gogo/descriptor"
+	"github.com/gogo/protobuf/protoc-gen-gogo/generator"
+	"github.com/gogo/protobuf/vanity"
+)
+
+type VarGen interface {
+	Next() string
+	Current() string
+}
+
+type varGen struct {
+	index int64
+}
+
+func NewVarGen() VarGen {
+	return &varGen{0}
+}
+
+func (this *varGen) Next() string {
+	this.index++
+	return fmt.Sprintf("v%d", this.index)
+}
+
+func (this *varGen) Current() string {
+	return fmt.Sprintf("v%d", this.index)
+}
+
+type plugin struct {
+	*generator.Generator
+	generator.PluginImports
+	varGen     VarGen
+	atleastOne bool
+	localName  string
+	typesPkg   generator.Single
+}
+
+func NewPlugin() *plugin {
+	return &plugin{}
+}
+
+func (p *plugin) Name() string {
+	return "populate"
+}
+
+func (p *plugin) Init(g *generator.Generator) {
+	p.Generator = g
+}
+
+func value(typeName string, fieldType descriptor.FieldDescriptorProto_Type) string {
+	switch fieldType {
+	case descriptor.FieldDescriptorProto_TYPE_DOUBLE:
+		return typeName + "(r.Float64())"
+	case descriptor.FieldDescriptorProto_TYPE_FLOAT:
+		return typeName + "(r.Float32())"
+	case descriptor.FieldDescriptorProto_TYPE_INT64,
+		descriptor.FieldDescriptorProto_TYPE_SFIXED64,
+		descriptor.FieldDescriptorProto_TYPE_SINT64:
+		return typeName + "(r.Int63())"
+	case descriptor.FieldDescriptorProto_TYPE_UINT64,
+		descriptor.FieldDescriptorProto_TYPE_FIXED64:
+		return typeName + "(uint64(r.Uint32()))"
+	case descriptor.FieldDescriptorProto_TYPE_INT32,
+		descriptor.FieldDescriptorProto_TYPE_SINT32,
+		descriptor.FieldDescriptorProto_TYPE_SFIXED32,
+		descriptor.FieldDescriptorProto_TYPE_ENUM:
+		return typeName + "(r.Int31())"
+	case descriptor.FieldDescriptorProto_TYPE_UINT32,
+		descriptor.FieldDescriptorProto_TYPE_FIXED32:
+		return typeName + "(r.Uint32())"
+	case descriptor.FieldDescriptorProto_TYPE_BOOL:
+		return typeName + `(bool(r.Intn(2) == 0))`
+	case descriptor.FieldDescriptorProto_TYPE_STRING,
+		descriptor.FieldDescriptorProto_TYPE_GROUP,
+		descriptor.FieldDescriptorProto_TYPE_MESSAGE,
+		descriptor.FieldDescriptorProto_TYPE_BYTES:
+	}
+	panic(fmt.Errorf("unexpected type %v", typeName))
+}
+
+func negative(fieldType descriptor.FieldDescriptorProto_Type) bool {
+	switch fieldType {
+	case descriptor.FieldDescriptorProto_TYPE_UINT64,
+		descriptor.FieldDescriptorProto_TYPE_FIXED64,
+		descriptor.FieldDescriptorProto_TYPE_UINT32,
+		descriptor.FieldDescriptorProto_TYPE_FIXED32,
+		descriptor.FieldDescriptorProto_TYPE_BOOL:
+		return false
+	}
+	return true
+}
+
+func (p *plugin) getFuncName(goTypName string, field *descriptor.FieldDescriptorProto) string {
+	funcName := "NewPopulated" + goTypName
+	goTypNames := strings.Split(goTypName, ".")
+	if len(goTypNames) == 2 {
+		funcName = goTypNames[0] + ".NewPopulated" + goTypNames[1]
+	} else if len(goTypNames) != 1 {
+		panic(fmt.Errorf("unreachable: too many dots in %v", goTypName))
+	}
+	if field != nil {
+		switch {
+		case gogoproto.IsStdTime(field):
+			funcName = p.typesPkg.Use() + ".NewPopulatedStdTime"
+		case gogoproto.IsStdDuration(field):
+			funcName = p.typesPkg.Use() + ".NewPopulatedStdDuration"
+		case gogoproto.IsStdDouble(field):
+			funcName = p.typesPkg.Use() + ".NewPopulatedStdDouble"
+		case gogoproto.IsStdFloat(field):
+			funcName = p.typesPkg.Use() + ".NewPopulatedStdFloat"
+		case gogoproto.IsStdInt64(field):
+			funcName = p.typesPkg.Use() + ".NewPopulatedStdInt64"
+		case gogoproto.IsStdUInt64(field):
+			funcName = p.typesPkg.Use() + ".NewPopulatedStdUInt64"
+		case gogoproto.IsStdInt32(field):
+			funcName = p.typesPkg.Use() + ".NewPopulatedStdInt32"
+		case gogoproto.IsStdUInt32(field):
+			funcName = p.typesPkg.Use() + ".NewPopulatedStdUInt32"
+		case gogoproto.IsStdBool(field):
+			funcName = p.typesPkg.Use() + ".NewPopulatedStdBool"
+		case gogoproto.IsStdString(field):
+			funcName = p.typesPkg.Use() + ".NewPopulatedStdString"
+		case gogoproto.IsStdBytes(field):
+			funcName = p.typesPkg.Use() + ".NewPopulatedStdBytes"
+		}
+	}
+	return funcName
+}
+
+func (p *plugin) getFuncCall(goTypName string, field *descriptor.FieldDescriptorProto) string {
+	funcName := p.getFuncName(goTypName, field)
+	funcCall := funcName + "(r, easy)"
+	return funcCall
+}
+
+func (p *plugin) getCustomFuncCall(goTypName string) string {
+	funcName := p.getFuncName(goTypName, nil)
+	funcCall := funcName + "(r)"
+	return funcCall
+}
+
+func (p *plugin) getEnumVal(field *descriptor.FieldDescriptorProto, goTyp string) string {
+	enum := p.ObjectNamed(field.GetTypeName()).(*generator.EnumDescriptor)
+	l := len(enum.Value)
+	values := make([]string, l)
+	for i := range enum.Value {
+		values[i] = strconv.Itoa(int(*enum.Value[i].Number))
+	}
+	arr := "[]int32{" + strings.Join(values, ",") + "}"
+	val := strings.Join([]string{generator.GoTypeToName(goTyp), `(`, arr, `[r.Intn(`, fmt.Sprintf("%d", l), `)])`}, "")
+	return val
+}
+
+func (p *plugin) GenerateField(file *generator.FileDescriptor, message *generator.Descriptor, field *descriptor.FieldDescriptorProto) {
+	proto3 := gogoproto.IsProto3(file.FileDescriptorProto)
+	goTyp, _ := p.GoType(message, field)
+	fieldname := p.GetOneOfFieldName(message, field)
+	goTypName := generator.GoTypeToName(goTyp)
+	if p.IsMap(field) {
+		m := p.GoMapType(nil, field)
+		keygoTyp, _ := p.GoType(nil, m.KeyField)
+		keygoTyp = strings.Replace(keygoTyp, "*", "", 1)
+		keygoAliasTyp, _ := p.GoType(nil, m.KeyAliasField)
+		keygoAliasTyp = strings.Replace(keygoAliasTyp, "*", "", 1)
+
+		valuegoTyp, _ := p.GoType(nil, m.ValueField)
+		valuegoAliasTyp, _ := p.GoType(nil, m.ValueAliasField)
+		keytypName := generator.GoTypeToName(keygoTyp)
+		keygoAliasTyp = generator.GoTypeToName(keygoAliasTyp)
+		valuetypAliasName := generator.GoTypeToName(valuegoAliasTyp)
+
+		nullable, valuegoTyp, valuegoAliasTyp := generator.GoMapValueTypes(field, m.ValueField, valuegoTyp, valuegoAliasTyp)
+
+		p.P(p.varGen.Next(), ` := r.Intn(10)`)
+		p.P(`this.`, fieldname, ` = make(`, m.GoType, `)`)
+		p.P(`for i := 0; i < `, p.varGen.Current(), `; i++ {`)
+		p.In()
+		keyval := ""
+		if m.KeyField.IsString() {
+			keyval = fmt.Sprintf("randString%v(r)", p.localName)
+		} else {
+			keyval = value(keytypName, m.KeyField.GetType())
+		}
+		if keygoAliasTyp != keygoTyp {
+			keyval = keygoAliasTyp + `(` + keyval + `)`
+		}
+		if m.ValueField.IsMessage() || p.IsGroup(field) ||
+			(m.ValueField.IsBytes() && gogoproto.IsCustomType(field)) {
+			s := `this.` + fieldname + `[` + keyval + `] = `
+			if gogoproto.IsStdType(field) {
+				valuegoTyp = valuegoAliasTyp
+			}
+			funcCall := p.getCustomFuncCall(goTypName)
+			if !gogoproto.IsCustomType(field) {
+				goTypName = generator.GoTypeToName(valuegoTyp)
+				funcCall = p.getFuncCall(goTypName, m.ValueAliasField)
+			}
+			if !nullable {
+				funcCall = `*` + funcCall
+			}
+			if valuegoTyp != valuegoAliasTyp {
+				funcCall = `(` + valuegoAliasTyp + `)(` + funcCall + `)`
+			}
+			s += funcCall
+			p.P(s)
+		} else if m.ValueField.IsEnum() {
+			s := `this.` + fieldname + `[` + keyval + `]` + ` = ` + p.getEnumVal(m.ValueField, valuegoTyp)
+			p.P(s)
+		} else if m.ValueField.IsBytes() {
+			count := p.varGen.Next()
+			p.P(count, ` := r.Intn(100)`)
+			p.P(p.varGen.Next(), ` := `, keyval)
+			p.P(`this.`, fieldname, `[`, p.varGen.Current(), `] = make(`, valuegoTyp, `, `, count, `)`)
+			p.P(`for i := 0; i < `, count, `; i++ {`)
+			p.In()
+			p.P(`this.`, fieldname, `[`, p.varGen.Current(), `][i] = byte(r.Intn(256))`)
+			p.Out()
+			p.P(`}`)
+		} else if m.ValueField.IsString() {
+			s := `this.` + fieldname + `[` + keyval + `]` + ` = ` + fmt.Sprintf("randString%v(r)", p.localName)
+			p.P(s)
+		} else {
+			p.P(p.varGen.Next(), ` := `, keyval)
+			p.P(`this.`, fieldname, `[`, p.varGen.Current(), `] = `, value(valuetypAliasName, m.ValueField.GetType()))
+			if negative(m.ValueField.GetType()) {
+				p.P(`if r.Intn(2) == 0 {`)
+				p.In()
+				p.P(`this.`, fieldname, `[`, p.varGen.Current(), `] *= -1`)
+				p.Out()
+				p.P(`}`)
+			}
+		}
+		p.Out()
+		p.P(`}`)
+	} else if gogoproto.IsCustomType(field) {
+		funcCall := p.getCustomFuncCall(goTypName)
+		if field.IsRepeated() {
+			p.P(p.varGen.Next(), ` := r.Intn(10)`)
+			p.P(`this.`, fieldname, ` = make(`, goTyp, `, `, p.varGen.Current(), `)`)
+			p.P(`for i := 0; i < `, p.varGen.Current(), `; i++ {`)
+			p.In()
+			p.P(p.varGen.Next(), `:= `, funcCall)
+			p.P(`this.`, fieldname, `[i] = *`, p.varGen.Current())
+			p.Out()
+			p.P(`}`)
+		} else if gogoproto.IsNullable(field) {
+			p.P(`this.`, fieldname, ` = `, funcCall)
+		} else {
+			p.P(p.varGen.Next(), `:= `, funcCall)
+			p.P(`this.`, fieldname, ` = *`, p.varGen.Current())
+		}
+	} else if field.IsMessage() || p.IsGroup(field) {
+		funcCall := p.getFuncCall(goTypName, field)
+		if field.IsRepeated() {
+			p.P(p.varGen.Next(), ` := r.Intn(5)`)
+			p.P(`this.`, fieldname, ` = make(`, goTyp, `, `, p.varGen.Current(), `)`)
+			p.P(`for i := 0; i < `, p.varGen.Current(), `; i++ {`)
+			p.In()
+			if gogoproto.IsNullable(field) {
+				p.P(`this.`, fieldname, `[i] = `, funcCall)
+			} else {
+				p.P(p.varGen.Next(), `:= `, funcCall)
+				p.P(`this.`, fieldname, `[i] = *`, p.varGen.Current())
+			}
+			p.Out()
+			p.P(`}`)
+		} else {
+			if gogoproto.IsNullable(field) {
+				p.P(`this.`, fieldname, ` = `, funcCall)
+			} else {
+				p.P(p.varGen.Next(), `:= `, funcCall)
+				p.P(`this.`, fieldname, ` = *`, p.varGen.Current())
+			}
+		}
+	} else {
+		if field.IsEnum() {
+			val := p.getEnumVal(field, goTyp)
+			if field.IsRepeated() {
+				p.P(p.varGen.Next(), ` := r.Intn(10)`)
+				p.P(`this.`, fieldname, ` = make(`, goTyp, `, `, p.varGen.Current(), `)`)
+				p.P(`for i := 0; i < `, p.varGen.Current(), `; i++ {`)
+				p.In()
+				p.P(`this.`, fieldname, `[i] = `, val)
+				p.Out()
+				p.P(`}`)
+			} else if !gogoproto.IsNullable(field) || proto3 {
+				p.P(`this.`, fieldname, ` = `, val)
+			} else {
+				p.P(p.varGen.Next(), ` := `, val)
+				p.P(`this.`, fieldname, ` = &`, p.varGen.Current())
+			}
+		} else if field.IsBytes() {
+			if field.IsRepeated() {
+				p.P(p.varGen.Next(), ` := r.Intn(10)`)
+				p.P(`this.`, fieldname, ` = make(`, goTyp, `, `, p.varGen.Current(), `)`)
+				p.P(`for i := 0; i < `, p.varGen.Current(), `; i++ {`)
+				p.In()
+				p.P(p.varGen.Next(), ` := r.Intn(100)`)
+				p.P(`this.`, fieldname, `[i] = make([]byte,`, p.varGen.Current(), `)`)
+				p.P(`for j := 0; j < `, p.varGen.Current(), `; j++ {`)
+				p.In()
+				p.P(`this.`, fieldname, `[i][j] = byte(r.Intn(256))`)
+				p.Out()
+				p.P(`}`)
+				p.Out()
+				p.P(`}`)
+			} else {
+				p.P(p.varGen.Next(), ` := r.Intn(100)`)
+				p.P(`this.`, fieldname, ` = make(`, goTyp, `, `, p.varGen.Current(), `)`)
+				p.P(`for i := 0; i < `, p.varGen.Current(), `; i++ {`)
+				p.In()
+				p.P(`this.`, fieldname, `[i] = byte(r.Intn(256))`)
+				p.Out()
+				p.P(`}`)
+			}
+		} else if field.IsString() {
+			typName := generator.GoTypeToName(goTyp)
+			val := fmt.Sprintf("%s(randString%v(r))", typName, p.localName)
+			if field.IsRepeated() {
+				p.P(p.varGen.Next(), ` := r.Intn(10)`)
+				p.P(`this.`, fieldname, ` = make(`, goTyp, `, `, p.varGen.Current(), `)`)
+				p.P(`for i := 0; i < `, p.varGen.Current(), `; i++ {`)
+				p.In()
+				p.P(`this.`, fieldname, `[i] = `, val)
+				p.Out()
+				p.P(`}`)
+			} else if !gogoproto.IsNullable(field) || proto3 {
+				p.P(`this.`, fieldname, ` = `, val)
+			} else {
+				p.P(p.varGen.Next(), `:= `, val)
+				p.P(`this.`, fieldname, ` = &`, p.varGen.Current())
+			}
+		} else {
+			typName := generator.GoTypeToName(goTyp)
+			if field.IsRepeated() {
+				p.P(p.varGen.Next(), ` := r.Intn(10)`)
+				p.P(`this.`, fieldname, ` = make(`, goTyp, `, `, p.varGen.Current(), `)`)
+				p.P(`for i := 0; i < `, p.varGen.Current(), `; i++ {`)
+				p.In()
+				p.P(`this.`, fieldname, `[i] = `, value(typName, field.GetType()))
+				if negative(field.GetType()) {
+					p.P(`if r.Intn(2) == 0 {`)
+					p.In()
+					p.P(`this.`, fieldname, `[i] *= -1`)
+					p.Out()
+					p.P(`}`)
+				}
+				p.Out()
+				p.P(`}`)
+			} else if !gogoproto.IsNullable(field) || proto3 {
+				p.P(`this.`, fieldname, ` = `, value(typName, field.GetType()))
+				if negative(field.GetType()) {
+					p.P(`if r.Intn(2) == 0 {`)
+					p.In()
+					p.P(`this.`, fieldname, ` *= -1`)
+					p.Out()
+					p.P(`}`)
+				}
+			} else {
+				p.P(p.varGen.Next(), ` := `, value(typName, field.GetType()))
+				if negative(field.GetType()) {
+					p.P(`if r.Intn(2) == 0 {`)
+					p.In()
+					p.P(p.varGen.Current(), ` *= -1`)
+					p.Out()
+					p.P(`}`)
+				}
+				p.P(`this.`, fieldname, ` = &`, p.varGen.Current())
+			}
+		}
+	}
+}
+
+func (p *plugin) hasLoop(pkg string, field *descriptor.FieldDescriptorProto, visited []*generator.Descriptor, excludes []*generator.Descriptor) *generator.Descriptor {
+	if field.IsMessage() || p.IsGroup(field) || p.IsMap(field) {
+		var fieldMessage *generator.Descriptor
+		if p.IsMap(field) {
+			m := p.GoMapType(nil, field)
+			if !m.ValueField.IsMessage() {
+				return nil
+			}
+			fieldMessage = p.ObjectNamed(m.ValueField.GetTypeName()).(*generator.Descriptor)
+		} else {
+			fieldMessage = p.ObjectNamed(field.GetTypeName()).(*generator.Descriptor)
+		}
+		fieldTypeName := generator.CamelCaseSlice(fieldMessage.TypeName())
+		for _, message := range visited {
+			messageTypeName := generator.CamelCaseSlice(message.TypeName())
+			if fieldTypeName == messageTypeName {
+				for _, e := range excludes {
+					if fieldTypeName == generator.CamelCaseSlice(e.TypeName()) {
+						return nil
+					}
+				}
+				return fieldMessage
+			}
+		}
+
+		for _, f := range fieldMessage.Field {
+			if strings.HasPrefix(f.GetTypeName(), "."+pkg) {
+				visited = append(visited, fieldMessage)
+				loopTo := p.hasLoop(pkg, f, visited, excludes)
+				if loopTo != nil {
+					return loopTo
+				}
+			}
+		}
+	}
+	return nil
+}
+
+func (p *plugin) loops(pkg string, field *descriptor.FieldDescriptorProto, message *generator.Descriptor) int {
+	//fmt.Fprintf(os.Stderr, "loops %v %v\n", field.GetTypeName(), generator.CamelCaseSlice(message.TypeName()))
+	excludes := []*generator.Descriptor{}
+	loops := 0
+	for {
+		visited := []*generator.Descriptor{}
+		loopTo := p.hasLoop(pkg, field, visited, excludes)
+		if loopTo == nil {
+			break
+		}
+		//fmt.Fprintf(os.Stderr, "loopTo %v\n", generator.CamelCaseSlice(loopTo.TypeName()))
+		excludes = append(excludes, loopTo)
+		loops++
+	}
+	return loops
+}
+
+func (p *plugin) Generate(file *generator.FileDescriptor) {
+	p.atleastOne = false
+	p.PluginImports = generator.NewPluginImports(p.Generator)
+	p.varGen = NewVarGen()
+	proto3 := gogoproto.IsProto3(file.FileDescriptorProto)
+	p.typesPkg = p.NewImport("github.com/gogo/protobuf/types")
+	p.localName = generator.FileName(file)
+	protoPkg := p.NewImport("github.com/gogo/protobuf/proto")
+	if !gogoproto.ImportsGoGoProto(file.FileDescriptorProto) {
+		protoPkg = p.NewImport("github.com/golang/protobuf/proto")
+	}
+
+	for _, message := range file.Messages() {
+		if !gogoproto.HasPopulate(file.FileDescriptorProto, message.DescriptorProto) {
+			continue
+		}
+		if message.DescriptorProto.GetOptions().GetMapEntry() {
+			continue
+		}
+		p.atleastOne = true
+		ccTypeName := generator.CamelCaseSlice(message.TypeName())
+		loopLevels := make([]int, len(message.Field))
+		maxLoopLevel := 0
+		for i, field := range message.Field {
+			loopLevels[i] = p.loops(file.GetPackage(), field, message)
+			if loopLevels[i] > maxLoopLevel {
+				maxLoopLevel = loopLevels[i]
+			}
+		}
+		ranTotal := 0
+		for i := range loopLevels {
+			ranTotal += int(math.Pow10(maxLoopLevel - loopLevels[i]))
+		}
+		p.P(`func NewPopulated`, ccTypeName, `(r randy`, p.localName, `, easy bool) *`, ccTypeName, ` {`)
+		p.In()
+		p.P(`this := &`, ccTypeName, `{}`)
+		if gogoproto.IsUnion(message.File().FileDescriptorProto, message.DescriptorProto) && len(message.Field) > 0 {
+			p.P(`fieldNum := r.Intn(`, fmt.Sprintf("%d", ranTotal), `)`)
+			p.P(`switch fieldNum {`)
+			k := 0
+			for i, field := range message.Field {
+				is := []string{}
+				ran := int(math.Pow10(maxLoopLevel - loopLevels[i]))
+				for j := 0; j < ran; j++ {
+					is = append(is, fmt.Sprintf("%d", j+k))
+				}
+				k += ran
+				p.P(`case `, strings.Join(is, ","), `:`)
+				p.In()
+				p.GenerateField(file, message, field)
+				p.Out()
+			}
+			p.P(`}`)
+		} else {
+			var maxFieldNumber int32
+			oneofs := make(map[string]struct{})
+			for fieldIndex, field := range message.Field {
+				if field.GetNumber() > maxFieldNumber {
+					maxFieldNumber = field.GetNumber()
+				}
+				oneof := field.OneofIndex != nil
+				if !oneof {
+					if field.IsRequired() || (!gogoproto.IsNullable(field) && !field.IsRepeated()) || (proto3 && !field.IsMessage()) {
+						p.GenerateField(file, message, field)
+					} else {
+						if loopLevels[fieldIndex] > 0 {
+							p.P(`if r.Intn(10) == 0 {`)
+						} else {
+							p.P(`if r.Intn(10) != 0 {`)
+						}
+						p.In()
+						p.GenerateField(file, message, field)
+						p.Out()
+						p.P(`}`)
+					}
+				} else {
+					fieldname := p.GetFieldName(message, field)
+					if _, ok := oneofs[fieldname]; ok {
+						continue
+					} else {
+						oneofs[fieldname] = struct{}{}
+					}
+					fieldNumbers := []int32{}
+					for _, f := range message.Field {
+						fname := p.GetFieldName(message, f)
+						if fname == fieldname {
+							fieldNumbers = append(fieldNumbers, f.GetNumber())
+						}
+					}
+
+					p.P(`oneofNumber_`, fieldname, ` := `, fmt.Sprintf("%#v", fieldNumbers), `[r.Intn(`, strconv.Itoa(len(fieldNumbers)), `)]`)
+					p.P(`switch oneofNumber_`, fieldname, ` {`)
+					for _, f := range message.Field {
+						fname := p.GetFieldName(message, f)
+						if fname != fieldname {
+							continue
+						}
+						p.P(`case `, strconv.Itoa(int(f.GetNumber())), `:`)
+						p.In()
+						ccTypeName := p.OneOfTypeName(message, f)
+						p.P(`this.`, fname, ` = NewPopulated`, ccTypeName, `(r, easy)`)
+						p.Out()
+					}
+					p.P(`}`)
+				}
+			}
+			if message.DescriptorProto.HasExtension() {
+				p.P(`if !easy && r.Intn(10) != 0 {`)
+				p.In()
+				p.P(`l := r.Intn(5)`)
+				p.P(`for i := 0; i < l; i++ {`)
+				p.In()
+				if len(message.DescriptorProto.GetExtensionRange()) > 1 {
+					p.P(`eIndex := r.Intn(`, strconv.Itoa(len(message.DescriptorProto.GetExtensionRange())), `)`)
+					p.P(`fieldNumber := 0`)
+					p.P(`switch eIndex {`)
+					for i, e := range message.DescriptorProto.GetExtensionRange() {
+						p.P(`case `, strconv.Itoa(i), `:`)
+						p.In()
+						p.P(`fieldNumber = r.Intn(`, strconv.Itoa(int(e.GetEnd()-e.GetStart())), `) + `, strconv.Itoa(int(e.GetStart())))
+						p.Out()
+						if e.GetEnd() > maxFieldNumber {
+							maxFieldNumber = e.GetEnd()
+						}
+					}
+					p.P(`}`)
+				} else {
+					e := message.DescriptorProto.GetExtensionRange()[0]
+					p.P(`fieldNumber := r.Intn(`, strconv.Itoa(int(e.GetEnd()-e.GetStart())), `) + `, strconv.Itoa(int(e.GetStart())))
+					if e.GetEnd() > maxFieldNumber {
+						maxFieldNumber = e.GetEnd()
+					}
+				}
+				p.P(`wire := r.Intn(4)`)
+				p.P(`if wire == 3 { wire = 5 }`)
+				p.P(`dAtA := randField`, p.localName, `(nil, r, fieldNumber, wire)`)
+				p.P(protoPkg.Use(), `.SetRawExtension(this, int32(fieldNumber), dAtA)`)
+				p.Out()
+				p.P(`}`)
+				p.Out()
+				p.P(`}`)
+			}
+
+			if maxFieldNumber < (1 << 10) {
+				p.P(`if !easy && r.Intn(10) != 0 {`)
+				p.In()
+				if gogoproto.HasUnrecognized(file.FileDescriptorProto, message.DescriptorProto) {
+					p.P(`this.XXX_unrecognized = randUnrecognized`, p.localName, `(r, `, strconv.Itoa(int(maxFieldNumber+1)), `)`)
+				}
+				p.Out()
+				p.P(`}`)
+			}
+		}
+		p.P(`return this`)
+		p.Out()
+		p.P(`}`)
+		p.P(``)
+
+		//Generate NewPopulated functions for oneof fields
+		m := proto.Clone(message.DescriptorProto).(*descriptor.DescriptorProto)
+		for _, f := range m.Field {
+			oneof := f.OneofIndex != nil
+			if !oneof {
+				continue
+			}
+			ccTypeName := p.OneOfTypeName(message, f)
+			p.P(`func NewPopulated`, ccTypeName, `(r randy`, p.localName, `, easy bool) *`, ccTypeName, ` {`)
+			p.In()
+			p.P(`this := &`, ccTypeName, `{}`)
+			vanity.TurnOffNullableForNativeTypes(f)
+			p.GenerateField(file, message, f)
+			p.P(`return this`)
+			p.Out()
+			p.P(`}`)
+		}
+	}
+
+	if !p.atleastOne {
+		return
+	}
+
+	p.P(`type randy`, p.localName, ` interface {`)
+	p.In()
+	p.P(`Float32() float32`)
+	p.P(`Float64() float64`)
+	p.P(`Int63() int64`)
+	p.P(`Int31() int32`)
+	p.P(`Uint32() uint32`)
+	p.P(`Intn(n int) int`)
+	p.Out()
+	p.P(`}`)
+
+	p.P(`func randUTF8Rune`, p.localName, `(r randy`, p.localName, `) rune {`)
+	p.In()
+	p.P(`ru := r.Intn(62)`)
+	p.P(`if ru < 10 {`)
+	p.In()
+	p.P(`return rune(ru+48)`)
+	p.Out()
+	p.P(`} else if ru < 36 {`)
+	p.In()
+	p.P(`return rune(ru+55)`)
+	p.Out()
+	p.P(`}`)
+	p.P(`return rune(ru+61)`)
+	p.Out()
+	p.P(`}`)
+
+	p.P(`func randString`, p.localName, `(r randy`, p.localName, `) string {`)
+	p.In()
+	p.P(p.varGen.Next(), ` := r.Intn(100)`)
+	p.P(`tmps := make([]rune, `, p.varGen.Current(), `)`)
+	p.P(`for i := 0; i < `, p.varGen.Current(), `; i++ {`)
+	p.In()
+	p.P(`tmps[i] = randUTF8Rune`, p.localName, `(r)`)
+	p.Out()
+	p.P(`}`)
+	p.P(`return string(tmps)`)
+	p.Out()
+	p.P(`}`)
+
+	p.P(`func randUnrecognized`, p.localName, `(r randy`, p.localName, `, maxFieldNumber int) (dAtA []byte) {`)
+	p.In()
+	p.P(`l := r.Intn(5)`)
+	p.P(`for i := 0; i < l; i++ {`)
+	p.In()
+	p.P(`wire := r.Intn(4)`)
+	p.P(`if wire == 3 { wire = 5 }`)
+	p.P(`fieldNumber := maxFieldNumber + r.Intn(100)`)
+	p.P(`dAtA = randField`, p.localName, `(dAtA, r, fieldNumber, wire)`)
+	p.Out()
+	p.P(`}`)
+	p.P(`return dAtA`)
+	p.Out()
+	p.P(`}`)
+
+	p.P(`func randField`, p.localName, `(dAtA []byte, r randy`, p.localName, `, fieldNumber int, wire int) []byte {`)
+	p.In()
+	p.P(`key := uint32(fieldNumber)<<3 | uint32(wire)`)
+	p.P(`switch wire {`)
+	p.P(`case 0:`)
+	p.In()
+	p.P(`dAtA = encodeVarintPopulate`, p.localName, `(dAtA, uint64(key))`)
+	p.P(p.varGen.Next(), ` := r.Int63()`)
+	p.P(`if r.Intn(2) == 0 {`)
+	p.In()
+	p.P(p.varGen.Current(), ` *= -1`)
+	p.Out()
+	p.P(`}`)
+	p.P(`dAtA = encodeVarintPopulate`, p.localName, `(dAtA, uint64(`, p.varGen.Current(), `))`)
+	p.Out()
+	p.P(`case 1:`)
+	p.In()
+	p.P(`dAtA = encodeVarintPopulate`, p.localName, `(dAtA, uint64(key))`)
+	p.P(`dAtA = append(dAtA, byte(r.Intn(256)), byte(r.Intn(256)), byte(r.Intn(256)), byte(r.Intn(256)), byte(r.Intn(256)), byte(r.Intn(256)), byte(r.Intn(256)), byte(r.Intn(256)))`)
+	p.Out()
+	p.P(`case 2:`)
+	p.In()
+	p.P(`dAtA = encodeVarintPopulate`, p.localName, `(dAtA, uint64(key))`)
+	p.P(`ll := r.Intn(100)`)
+	p.P(`dAtA = encodeVarintPopulate`, p.localName, `(dAtA, uint64(ll))`)
+	p.P(`for j := 0; j < ll; j++ {`)
+	p.In()
+	p.P(`dAtA = append(dAtA, byte(r.Intn(256)))`)
+	p.Out()
+	p.P(`}`)
+	p.Out()
+	p.P(`default:`)
+	p.In()
+	p.P(`dAtA = encodeVarintPopulate`, p.localName, `(dAtA, uint64(key))`)
+	p.P(`dAtA = append(dAtA, byte(r.Intn(256)), byte(r.Intn(256)), byte(r.Intn(256)), byte(r.Intn(256)))`)
+	p.Out()
+	p.P(`}`)
+	p.P(`return dAtA`)
+	p.Out()
+	p.P(`}`)
+
+	p.P(`func encodeVarintPopulate`, p.localName, `(dAtA []byte, v uint64) []byte {`)
+	p.In()
+	p.P(`for v >= 1<<7 {`)
+	p.In()
+	p.P(`dAtA = append(dAtA, uint8(uint64(v)&0x7f|0x80))`)
+	p.P(`v >>= 7`)
+	p.Out()
+	p.P(`}`)
+	p.P(`dAtA = append(dAtA, uint8(v))`)
+	p.P(`return dAtA`)
+	p.Out()
+	p.P(`}`)
+
+}
+
+func init() {
+	generator.RegisterPlugin(NewPlugin())
+}

vendor/github.com/gogo/protobuf/plugin/size/size.go

@@ -0,0 +1,701 @@
+// 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 size plugin generates a Size or ProtoSize method for each message.
+This is useful with the MarshalTo method generated by the marshalto plugin and the
+gogoproto.marshaler and gogoproto.marshaler_all extensions.
+
+It is enabled by the following extensions:
+
+  - sizer
+  - sizer_all
+  - protosizer
+  - protosizer_all
+
+The size plugin also generates a test given it is enabled using one of the following extensions:
+
+  - testgen
+  - testgen_all
+
+And a benchmark 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.sizer_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 size plugin, will generate the following code:
+
+  func (m *B) Size() (n int) {
+	if m == nil {
+		return 0
+	}
+	var l int
+	_ = l
+	l = m.A.Size()
+	n += 1 + l + sovExample(uint64(l))
+	if len(m.G) > 0 {
+		for _, e := range m.G {
+			l = e.Size()
+			n += 1 + l + sovExample(uint64(l))
+		}
+	}
+	if m.XXX_unrecognized != nil {
+		n += len(m.XXX_unrecognized)
+	}
+	return n
+  }
+
+and the following test code:
+
+	func TestBSize(t *testing5.T) {
+		popr := math_rand5.New(math_rand5.NewSource(time5.Now().UnixNano()))
+		p := NewPopulatedB(popr, true)
+		dAtA, err := github_com_gogo_protobuf_proto2.Marshal(p)
+		if err != nil {
+			panic(err)
+		}
+		size := p.Size()
+		if len(dAtA) != size {
+			t.Fatalf("size %v != marshalled size %v", size, len(dAtA))
+		}
+	}
+
+	func BenchmarkBSize(b *testing5.B) {
+		popr := math_rand5.New(math_rand5.NewSource(616))
+		total := 0
+		pops := make([]*B, 1000)
+		for i := 0; i < 1000; i++ {
+			pops[i] = NewPopulatedB(popr, false)
+		}
+		b.ResetTimer()
+		for i := 0; i < b.N; i++ {
+			total += pops[i%1000].Size()
+		}
+		b.SetBytes(int64(total / b.N))
+	}
+
+The sovExample function is a size of varint function for the example.pb.go file.
+
+*/
+package size
+
+import (
+	"fmt"
+	"os"
+	"strconv"
+	"strings"
+
+	"github.com/gogo/protobuf/gogoproto"
+	"github.com/gogo/protobuf/proto"
+	descriptor "github.com/gogo/protobuf/protoc-gen-gogo/descriptor"
+	"github.com/gogo/protobuf/protoc-gen-gogo/generator"
+	"github.com/gogo/protobuf/vanity"
+)
+
+type size struct {
+	*generator.Generator
+	generator.PluginImports
+	atleastOne bool
+	localName  string
+	typesPkg   generator.Single
+}
+
+func NewSize() *size {
+	return &size{}
+}
+
+func (p *size) Name() string {
+	return "size"
+}
+
+func (p *size) Init(g *generator.Generator) {
+	p.Generator = g
+}
+
+func wireToType(wire string) int {
+	switch wire {
+	case "fixed64":
+		return proto.WireFixed64
+	case "fixed32":
+		return proto.WireFixed32
+	case "varint":
+		return proto.WireVarint
+	case "bytes":
+		return proto.WireBytes
+	case "group":
+		return proto.WireBytes
+	case "zigzag32":
+		return proto.WireVarint
+	case "zigzag64":
+		return proto.WireVarint
+	}
+	panic("unreachable")
+}
+
+func keySize(fieldNumber int32, wireType int) int {
+	x := uint32(fieldNumber)<<3 | uint32(wireType)
+	size := 0
+	for size = 0; x > 127; size++ {
+		x >>= 7
+	}
+	size++
+	return size
+}
+
+func (p *size) sizeVarint() {
+	p.P(`
+	func sov`, p.localName, `(x uint64) (n int) {
+		for {
+			n++
+			x >>= 7
+			if x == 0 {
+				break
+			}
+		}
+		return n
+	}`)
+}
+
+func (p *size) sizeZigZag() {
+	p.P(`func soz`, p.localName, `(x uint64) (n int) {
+		return sov`, p.localName, `(uint64((x << 1) ^ uint64((int64(x) >> 63))))
+	}`)
+}
+
+func (p *size) std(field *descriptor.FieldDescriptorProto, name string) (string, bool) {
+	ptr := ""
+	if gogoproto.IsNullable(field) {
+		ptr = "*"
+	}
+	if gogoproto.IsStdTime(field) {
+		return p.typesPkg.Use() + `.SizeOfStdTime(` + ptr + name + `)`, true
+	} else if gogoproto.IsStdDuration(field) {
+		return p.typesPkg.Use() + `.SizeOfStdDuration(` + ptr + name + `)`, true
+	} else if gogoproto.IsStdDouble(field) {
+		return p.typesPkg.Use() + `.SizeOfStdDouble(` + ptr + name + `)`, true
+	} else if gogoproto.IsStdFloat(field) {
+		return p.typesPkg.Use() + `.SizeOfStdFloat(` + ptr + name + `)`, true
+	} else if gogoproto.IsStdInt64(field) {
+		return p.typesPkg.Use() + `.SizeOfStdInt64(` + ptr + name + `)`, true
+	} else if gogoproto.IsStdUInt64(field) {
+		return p.typesPkg.Use() + `.SizeOfStdUInt64(` + ptr + name + `)`, true
+	} else if gogoproto.IsStdInt32(field) {
+		return p.typesPkg.Use() + `.SizeOfStdInt32(` + ptr + name + `)`, true
+	} else if gogoproto.IsStdUInt32(field) {
+		return p.typesPkg.Use() + `.SizeOfStdUInt32(` + ptr + name + `)`, true
+	} else if gogoproto.IsStdBool(field) {
+		return p.typesPkg.Use() + `.SizeOfStdBool(` + ptr + name + `)`, true
+	} else if gogoproto.IsStdString(field) {
+		return p.typesPkg.Use() + `.SizeOfStdString(` + ptr + name + `)`, true
+	} else if gogoproto.IsStdBytes(field) {
+		return p.typesPkg.Use() + `.SizeOfStdBytes(` + ptr + name + `)`, true
+	}
+	return "", false
+}
+
+func (p *size) generateField(proto3 bool, file *generator.FileDescriptor, message *generator.Descriptor, field *descriptor.FieldDescriptorProto, sizeName string) {
+	fieldname := p.GetOneOfFieldName(message, field)
+	nullable := gogoproto.IsNullable(field)
+	repeated := field.IsRepeated()
+	doNilCheck := gogoproto.NeedsNilCheck(proto3, field)
+	if repeated {
+		p.P(`if len(m.`, fieldname, `) > 0 {`)
+		p.In()
+	} else if doNilCheck {
+		p.P(`if m.`, fieldname, ` != nil {`)
+		p.In()
+	}
+	packed := field.IsPacked() || (proto3 && field.IsPacked3())
+	_, wire := p.GoType(message, field)
+	wireType := wireToType(wire)
+	fieldNumber := field.GetNumber()
+	if packed {
+		wireType = proto.WireBytes
+	}
+	key := keySize(fieldNumber, wireType)
+	switch *field.Type {
+	case descriptor.FieldDescriptorProto_TYPE_DOUBLE,
+		descriptor.FieldDescriptorProto_TYPE_FIXED64,
+		descriptor.FieldDescriptorProto_TYPE_SFIXED64:
+		if packed {
+			p.P(`n+=`, strconv.Itoa(key), `+sov`, p.localName, `(uint64(len(m.`, fieldname, `)*8))`, `+len(m.`, fieldname, `)*8`)
+		} else if repeated {
+			p.P(`n+=`, strconv.Itoa(key+8), `*len(m.`, fieldname, `)`)
+		} else if proto3 {
+			p.P(`if m.`, fieldname, ` != 0 {`)
+			p.In()
+			p.P(`n+=`, strconv.Itoa(key+8))
+			p.Out()
+			p.P(`}`)
+		} else if nullable {
+			p.P(`n+=`, strconv.Itoa(key+8))
+		} else {
+			p.P(`n+=`, strconv.Itoa(key+8))
+		}
+	case descriptor.FieldDescriptorProto_TYPE_FLOAT,
+		descriptor.FieldDescriptorProto_TYPE_FIXED32,
+		descriptor.FieldDescriptorProto_TYPE_SFIXED32:
+		if packed {
+			p.P(`n+=`, strconv.Itoa(key), `+sov`, p.localName, `(uint64(len(m.`, fieldname, `)*4))`, `+len(m.`, fieldname, `)*4`)
+		} else if repeated {
+			p.P(`n+=`, strconv.Itoa(key+4), `*len(m.`, fieldname, `)`)
+		} else if proto3 {
+			p.P(`if m.`, fieldname, ` != 0 {`)
+			p.In()
+			p.P(`n+=`, strconv.Itoa(key+4))
+			p.Out()
+			p.P(`}`)
+		} else if nullable {
+			p.P(`n+=`, strconv.Itoa(key+4))
+		} else {
+			p.P(`n+=`, strconv.Itoa(key+4))
+		}
+	case descriptor.FieldDescriptorProto_TYPE_INT64,
+		descriptor.FieldDescriptorProto_TYPE_UINT64,
+		descriptor.FieldDescriptorProto_TYPE_UINT32,
+		descriptor.FieldDescriptorProto_TYPE_ENUM,
+		descriptor.FieldDescriptorProto_TYPE_INT32:
+		if packed {
+			p.P(`l = 0`)
+			p.P(`for _, e := range m.`, fieldname, ` {`)
+			p.In()
+			p.P(`l+=sov`, p.localName, `(uint64(e))`)
+			p.Out()
+			p.P(`}`)
+			p.P(`n+=`, strconv.Itoa(key), `+sov`, p.localName, `(uint64(l))+l`)
+		} else if repeated {
+			p.P(`for _, e := range m.`, fieldname, ` {`)
+			p.In()
+			p.P(`n+=`, strconv.Itoa(key), `+sov`, p.localName, `(uint64(e))`)
+			p.Out()
+			p.P(`}`)
+		} else if proto3 {
+			p.P(`if m.`, fieldname, ` != 0 {`)
+			p.In()
+			p.P(`n+=`, strconv.Itoa(key), `+sov`, p.localName, `(uint64(m.`, fieldname, `))`)
+			p.Out()
+			p.P(`}`)
+		} else if nullable {
+			p.P(`n+=`, strconv.Itoa(key), `+sov`, p.localName, `(uint64(*m.`, fieldname, `))`)
+		} else {
+			p.P(`n+=`, strconv.Itoa(key), `+sov`, p.localName, `(uint64(m.`, fieldname, `))`)
+		}
+	case descriptor.FieldDescriptorProto_TYPE_BOOL:
+		if packed {
+			p.P(`n+=`, strconv.Itoa(key), `+sov`, p.localName, `(uint64(len(m.`, fieldname, `)))`, `+len(m.`, fieldname, `)*1`)
+		} else if repeated {
+			p.P(`n+=`, strconv.Itoa(key+1), `*len(m.`, fieldname, `)`)
+		} else if proto3 {
+			p.P(`if m.`, fieldname, ` {`)
+			p.In()
+			p.P(`n+=`, strconv.Itoa(key+1))
+			p.Out()
+			p.P(`}`)
+		} else if nullable {
+			p.P(`n+=`, strconv.Itoa(key+1))
+		} else {
+			p.P(`n+=`, strconv.Itoa(key+1))
+		}
+	case descriptor.FieldDescriptorProto_TYPE_STRING:
+		if repeated {
+			p.P(`for _, s := range m.`, fieldname, ` { `)
+			p.In()
+			p.P(`l = len(s)`)
+			p.P(`n+=`, strconv.Itoa(key), `+l+sov`, p.localName, `(uint64(l))`)
+			p.Out()
+			p.P(`}`)
+		} else if proto3 {
+			p.P(`l=len(m.`, fieldname, `)`)
+			p.P(`if l > 0 {`)
+			p.In()
+			p.P(`n+=`, strconv.Itoa(key), `+l+sov`, p.localName, `(uint64(l))`)
+			p.Out()
+			p.P(`}`)
+		} else if nullable {
+			p.P(`l=len(*m.`, fieldname, `)`)
+			p.P(`n+=`, strconv.Itoa(key), `+l+sov`, p.localName, `(uint64(l))`)
+		} else {
+			p.P(`l=len(m.`, fieldname, `)`)
+			p.P(`n+=`, strconv.Itoa(key), `+l+sov`, p.localName, `(uint64(l))`)
+		}
+	case descriptor.FieldDescriptorProto_TYPE_GROUP:
+		panic(fmt.Errorf("size does not support group %v", fieldname))
+	case descriptor.FieldDescriptorProto_TYPE_MESSAGE:
+		if p.IsMap(field) {
+			m := p.GoMapType(nil, field)
+			_, keywire := p.GoType(nil, m.KeyAliasField)
+			valuegoTyp, _ := p.GoType(nil, m.ValueField)
+			valuegoAliasTyp, valuewire := p.GoType(nil, m.ValueAliasField)
+			_, fieldwire := p.GoType(nil, field)
+
+			nullable, valuegoTyp, valuegoAliasTyp = generator.GoMapValueTypes(field, m.ValueField, valuegoTyp, valuegoAliasTyp)
+
+			fieldKeySize := keySize(field.GetNumber(), wireToType(fieldwire))
+			keyKeySize := keySize(1, wireToType(keywire))
+			valueKeySize := keySize(2, wireToType(valuewire))
+			p.P(`for k, v := range m.`, fieldname, ` { `)
+			p.In()
+			p.P(`_ = k`)
+			p.P(`_ = v`)
+			sum := []string{strconv.Itoa(keyKeySize)}
+			switch m.KeyField.GetType() {
+			case descriptor.FieldDescriptorProto_TYPE_DOUBLE,
+				descriptor.FieldDescriptorProto_TYPE_FIXED64,
+				descriptor.FieldDescriptorProto_TYPE_SFIXED64:
+				sum = append(sum, `8`)
+			case descriptor.FieldDescriptorProto_TYPE_FLOAT,
+				descriptor.FieldDescriptorProto_TYPE_FIXED32,
+				descriptor.FieldDescriptorProto_TYPE_SFIXED32:
+				sum = append(sum, `4`)
+			case descriptor.FieldDescriptorProto_TYPE_INT64,
+				descriptor.FieldDescriptorProto_TYPE_UINT64,
+				descriptor.FieldDescriptorProto_TYPE_UINT32,
+				descriptor.FieldDescriptorProto_TYPE_ENUM,
+				descriptor.FieldDescriptorProto_TYPE_INT32:
+				sum = append(sum, `sov`+p.localName+`(uint64(k))`)
+			case descriptor.FieldDescriptorProto_TYPE_BOOL:
+				sum = append(sum, `1`)
+			case descriptor.FieldDescriptorProto_TYPE_STRING,
+				descriptor.FieldDescriptorProto_TYPE_BYTES:
+				sum = append(sum, `len(k)+sov`+p.localName+`(uint64(len(k)))`)
+			case descriptor.FieldDescriptorProto_TYPE_SINT32,
+				descriptor.FieldDescriptorProto_TYPE_SINT64:
+				sum = append(sum, `soz`+p.localName+`(uint64(k))`)
+			}
+			switch m.ValueField.GetType() {
+			case descriptor.FieldDescriptorProto_TYPE_DOUBLE,
+				descriptor.FieldDescriptorProto_TYPE_FIXED64,
+				descriptor.FieldDescriptorProto_TYPE_SFIXED64:
+				sum = append(sum, strconv.Itoa(valueKeySize))
+				sum = append(sum, strconv.Itoa(8))
+			case descriptor.FieldDescriptorProto_TYPE_FLOAT,
+				descriptor.FieldDescriptorProto_TYPE_FIXED32,
+				descriptor.FieldDescriptorProto_TYPE_SFIXED32:
+				sum = append(sum, strconv.Itoa(valueKeySize))
+				sum = append(sum, strconv.Itoa(4))
+			case descriptor.FieldDescriptorProto_TYPE_INT64,
+				descriptor.FieldDescriptorProto_TYPE_UINT64,
+				descriptor.FieldDescriptorProto_TYPE_UINT32,
+				descriptor.FieldDescriptorProto_TYPE_ENUM,
+				descriptor.FieldDescriptorProto_TYPE_INT32:
+				sum = append(sum, strconv.Itoa(valueKeySize))
+				sum = append(sum, `sov`+p.localName+`(uint64(v))`)
+			case descriptor.FieldDescriptorProto_TYPE_BOOL:
+				sum = append(sum, strconv.Itoa(valueKeySize))
+				sum = append(sum, `1`)
+			case descriptor.FieldDescriptorProto_TYPE_STRING:
+				sum = append(sum, strconv.Itoa(valueKeySize))
+				sum = append(sum, `len(v)+sov`+p.localName+`(uint64(len(v)))`)
+			case descriptor.FieldDescriptorProto_TYPE_BYTES:
+				if gogoproto.IsCustomType(field) {
+					p.P(`l = 0`)
+					if nullable {
+						p.P(`if v != nil {`)
+						p.In()
+					}
+					p.P(`l = v.`, sizeName, `()`)
+					p.P(`l += `, strconv.Itoa(valueKeySize), ` + sov`+p.localName+`(uint64(l))`)
+					if nullable {
+						p.Out()
+						p.P(`}`)
+					}
+					sum = append(sum, `l`)
+				} else {
+					p.P(`l = 0`)
+					if proto3 {
+						p.P(`if len(v) > 0 {`)
+					} else {
+						p.P(`if v != nil {`)
+					}
+					p.In()
+					p.P(`l = `, strconv.Itoa(valueKeySize), ` + len(v)+sov`+p.localName+`(uint64(len(v)))`)
+					p.Out()
+					p.P(`}`)
+					sum = append(sum, `l`)
+				}
+			case descriptor.FieldDescriptorProto_TYPE_SINT32,
+				descriptor.FieldDescriptorProto_TYPE_SINT64:
+				sum = append(sum, strconv.Itoa(valueKeySize))
+				sum = append(sum, `soz`+p.localName+`(uint64(v))`)
+			case descriptor.FieldDescriptorProto_TYPE_MESSAGE:
+				stdSizeCall, stdOk := p.std(m.ValueAliasField, "v")
+				if nullable {
+					p.P(`l = 0`)
+					p.P(`if v != nil {`)
+					p.In()
+					if stdOk {
+						p.P(`l = `, stdSizeCall)
+					} else if valuegoTyp != valuegoAliasTyp {
+						p.P(`l = ((`, valuegoTyp, `)(v)).`, sizeName, `()`)
+					} else {
+						p.P(`l = v.`, sizeName, `()`)
+					}
+					p.P(`l += `, strconv.Itoa(valueKeySize), ` + sov`+p.localName+`(uint64(l))`)
+					p.Out()
+					p.P(`}`)
+					sum = append(sum, `l`)
+				} else {
+					if stdOk {
+						p.P(`l = `, stdSizeCall)
+					} else if valuegoTyp != valuegoAliasTyp {
+						p.P(`l = ((*`, valuegoTyp, `)(&v)).`, sizeName, `()`)
+					} else {
+						p.P(`l = v.`, sizeName, `()`)
+					}
+					sum = append(sum, strconv.Itoa(valueKeySize))
+					sum = append(sum, `l+sov`+p.localName+`(uint64(l))`)
+				}
+			}
+			p.P(`mapEntrySize := `, strings.Join(sum, "+"))
+			p.P(`n+=mapEntrySize+`, fieldKeySize, `+sov`, p.localName, `(uint64(mapEntrySize))`)
+			p.Out()
+			p.P(`}`)
+		} else if repeated {
+			p.P(`for _, e := range m.`, fieldname, ` { `)
+			p.In()
+			stdSizeCall, stdOk := p.std(field, "e")
+			if stdOk {
+				p.P(`l=`, stdSizeCall)
+			} else {
+				p.P(`l=e.`, sizeName, `()`)
+			}
+			p.P(`n+=`, strconv.Itoa(key), `+l+sov`, p.localName, `(uint64(l))`)
+			p.Out()
+			p.P(`}`)
+		} else {
+			stdSizeCall, stdOk := p.std(field, "m."+fieldname)
+			if stdOk {
+				p.P(`l=`, stdSizeCall)
+			} else {
+				p.P(`l=m.`, fieldname, `.`, sizeName, `()`)
+			}
+			p.P(`n+=`, strconv.Itoa(key), `+l+sov`, p.localName, `(uint64(l))`)
+		}
+	case descriptor.FieldDescriptorProto_TYPE_BYTES:
+		if !gogoproto.IsCustomType(field) {
+			if repeated {
+				p.P(`for _, b := range m.`, fieldname, ` { `)
+				p.In()
+				p.P(`l = len(b)`)
+				p.P(`n+=`, strconv.Itoa(key), `+l+sov`, p.localName, `(uint64(l))`)
+				p.Out()
+				p.P(`}`)
+			} else if proto3 {
+				p.P(`l=len(m.`, fieldname, `)`)
+				p.P(`if l > 0 {`)
+				p.In()
+				p.P(`n+=`, strconv.Itoa(key), `+l+sov`, p.localName, `(uint64(l))`)
+				p.Out()
+				p.P(`}`)
+			} else {
+				p.P(`l=len(m.`, fieldname, `)`)
+				p.P(`n+=`, strconv.Itoa(key), `+l+sov`, p.localName, `(uint64(l))`)
+			}
+		} else {
+			if repeated {
+				p.P(`for _, e := range m.`, fieldname, ` { `)
+				p.In()
+				p.P(`l=e.`, sizeName, `()`)
+				p.P(`n+=`, strconv.Itoa(key), `+l+sov`, p.localName, `(uint64(l))`)
+				p.Out()
+				p.P(`}`)
+			} else {
+				p.P(`l=m.`, fieldname, `.`, sizeName, `()`)
+				p.P(`n+=`, strconv.Itoa(key), `+l+sov`, p.localName, `(uint64(l))`)
+			}
+		}
+	case descriptor.FieldDescriptorProto_TYPE_SINT32,
+		descriptor.FieldDescriptorProto_TYPE_SINT64:
+		if packed {
+			p.P(`l = 0`)
+			p.P(`for _, e := range m.`, fieldname, ` {`)
+			p.In()
+			p.P(`l+=soz`, p.localName, `(uint64(e))`)
+			p.Out()
+			p.P(`}`)
+			p.P(`n+=`, strconv.Itoa(key), `+sov`, p.localName, `(uint64(l))+l`)
+		} else if repeated {
+			p.P(`for _, e := range m.`, fieldname, ` {`)
+			p.In()
+			p.P(`n+=`, strconv.Itoa(key), `+soz`, p.localName, `(uint64(e))`)
+			p.Out()
+			p.P(`}`)
+		} else if proto3 {
+			p.P(`if m.`, fieldname, ` != 0 {`)
+			p.In()
+			p.P(`n+=`, strconv.Itoa(key), `+soz`, p.localName, `(uint64(m.`, fieldname, `))`)
+			p.Out()
+			p.P(`}`)
+		} else if nullable {
+			p.P(`n+=`, strconv.Itoa(key), `+soz`, p.localName, `(uint64(*m.`, fieldname, `))`)
+		} else {
+			p.P(`n+=`, strconv.Itoa(key), `+soz`, p.localName, `(uint64(m.`, fieldname, `))`)
+		}
+	default:
+		panic("not implemented")
+	}
+	if repeated || doNilCheck {
+		p.Out()
+		p.P(`}`)
+	}
+}
+
+func (p *size) Generate(file *generator.FileDescriptor) {
+	p.PluginImports = generator.NewPluginImports(p.Generator)
+	p.atleastOne = false
+	p.localName = generator.FileName(file)
+	p.typesPkg = p.NewImport("github.com/gogo/protobuf/types")
+	protoPkg := p.NewImport("github.com/gogo/protobuf/proto")
+	if !gogoproto.ImportsGoGoProto(file.FileDescriptorProto) {
+		protoPkg = p.NewImport("github.com/golang/protobuf/proto")
+	}
+	for _, message := range file.Messages() {
+		sizeName := ""
+		if gogoproto.IsSizer(file.FileDescriptorProto, message.DescriptorProto) && gogoproto.IsProtoSizer(file.FileDescriptorProto, message.DescriptorProto) {
+			fmt.Fprintf(os.Stderr, "ERROR: message %v cannot support both sizer and protosizer plugins\n", generator.CamelCase(*message.Name))
+			os.Exit(1)
+		}
+		if gogoproto.IsSizer(file.FileDescriptorProto, message.DescriptorProto) {
+			sizeName = "Size"
+		} else if gogoproto.IsProtoSizer(file.FileDescriptorProto, message.DescriptorProto) {
+			sizeName = "ProtoSize"
+		} else {
+			continue
+		}
+		if message.DescriptorProto.GetOptions().GetMapEntry() {
+			continue
+		}
+		p.atleastOne = true
+		ccTypeName := generator.CamelCaseSlice(message.TypeName())
+		p.P(`func (m *`, ccTypeName, `) `, sizeName, `() (n int) {`)
+		p.In()
+		p.P(`if m == nil {`)
+		p.In()
+		p.P(`return 0`)
+		p.Out()
+		p.P(`}`)
+		p.P(`var l int`)
+		p.P(`_ = l`)
+		oneofs := make(map[string]struct{})
+		for _, field := range message.Field {
+			oneof := field.OneofIndex != nil
+			if !oneof {
+				proto3 := gogoproto.IsProto3(file.FileDescriptorProto)
+				p.generateField(proto3, file, message, field, sizeName)
+			} else {
+				fieldname := p.GetFieldName(message, field)
+				if _, ok := oneofs[fieldname]; ok {
+					continue
+				} else {
+					oneofs[fieldname] = struct{}{}
+				}
+				p.P(`if m.`, fieldname, ` != nil {`)
+				p.In()
+				p.P(`n+=m.`, fieldname, `.`, sizeName, `()`)
+				p.Out()
+				p.P(`}`)
+			}
+		}
+		if message.DescriptorProto.HasExtension() {
+			if gogoproto.HasExtensionsMap(file.FileDescriptorProto, message.DescriptorProto) {
+				p.P(`n += `, protoPkg.Use(), `.SizeOfInternalExtension(m)`)
+			} else {
+				p.P(`if m.XXX_extensions != nil {`)
+				p.In()
+				p.P(`n+=len(m.XXX_extensions)`)
+				p.Out()
+				p.P(`}`)
+			}
+		}
+		if gogoproto.HasUnrecognized(file.FileDescriptorProto, message.DescriptorProto) {
+			p.P(`if m.XXX_unrecognized != nil {`)
+			p.In()
+			p.P(`n+=len(m.XXX_unrecognized)`)
+			p.Out()
+			p.P(`}`)
+		}
+		p.P(`return n`)
+		p.Out()
+		p.P(`}`)
+		p.P()
+
+		//Generate Size methods for oneof fields
+		m := proto.Clone(message.DescriptorProto).(*descriptor.DescriptorProto)
+		for _, f := range m.Field {
+			oneof := f.OneofIndex != nil
+			if !oneof {
+				continue
+			}
+			ccTypeName := p.OneOfTypeName(message, f)
+			p.P(`func (m *`, ccTypeName, `) `, sizeName, `() (n int) {`)
+			p.In()
+			p.P(`if m == nil {`)
+			p.In()
+			p.P(`return 0`)
+			p.Out()
+			p.P(`}`)
+			p.P(`var l int`)
+			p.P(`_ = l`)
+			vanity.TurnOffNullableForNativeTypes(f)
+			p.generateField(false, file, message, f, sizeName)
+			p.P(`return n`)
+			p.Out()
+			p.P(`}`)
+		}
+	}
+
+	if !p.atleastOne {
+		return
+	}
+
+	p.sizeVarint()
+	p.sizeZigZag()
+
+}
+
+func init() {
+	generator.RegisterPlugin(NewSize())
+}

vendor/github.com/gogo/protobuf/plugin/size/sizetest.go

@@ -0,0 +1,134 @@
+// 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.
+
+package size
+
+import (
+	"github.com/gogo/protobuf/gogoproto"
+	"github.com/gogo/protobuf/plugin/testgen"
+	"github.com/gogo/protobuf/protoc-gen-gogo/generator"
+)
+
+type test struct {
+	*generator.Generator
+}
+
+func NewTest(g *generator.Generator) testgen.TestPlugin {
+	return &test{g}
+}
+
+func (p *test) Generate(imports generator.PluginImports, file *generator.FileDescriptor) bool {
+	used := false
+	randPkg := imports.NewImport("math/rand")
+	timePkg := imports.NewImport("time")
+	testingPkg := imports.NewImport("testing")
+	protoPkg := imports.NewImport("github.com/gogo/protobuf/proto")
+	if !gogoproto.ImportsGoGoProto(file.FileDescriptorProto) {
+		protoPkg = imports.NewImport("github.com/golang/protobuf/proto")
+	}
+	for _, message := range file.Messages() {
+		ccTypeName := generator.CamelCaseSlice(message.TypeName())
+		sizeName := ""
+		if gogoproto.IsSizer(file.FileDescriptorProto, message.DescriptorProto) {
+			sizeName = "Size"
+		} else if gogoproto.IsProtoSizer(file.FileDescriptorProto, message.DescriptorProto) {
+			sizeName = "ProtoSize"
+		} else {
+			continue
+		}
+		if message.DescriptorProto.GetOptions().GetMapEntry() {
+			continue
+		}
+
+		if gogoproto.HasTestGen(file.FileDescriptorProto, message.DescriptorProto) {
+			used = true
+			p.P(`func Test`, ccTypeName, sizeName, `(t *`, testingPkg.Use(), `.T) {`)
+			p.In()
+			p.P(`seed := `, timePkg.Use(), `.Now().UnixNano()`)
+			p.P(`popr := `, randPkg.Use(), `.New(`, randPkg.Use(), `.NewSource(seed))`)
+			p.P(`p := NewPopulated`, ccTypeName, `(popr, true)`)
+			p.P(`size2 := `, protoPkg.Use(), `.Size(p)`)
+			p.P(`dAtA, err := `, protoPkg.Use(), `.Marshal(p)`)
+			p.P(`if err != nil {`)
+			p.In()
+			p.P(`t.Fatalf("seed = %d, err = %v", seed, err)`)
+			p.Out()
+			p.P(`}`)
+			p.P(`size := p.`, sizeName, `()`)
+			p.P(`if len(dAtA) != size {`)
+			p.In()
+			p.P(`t.Errorf("seed = %d, size %v != marshalled size %v", seed, size, len(dAtA))`)
+			p.Out()
+			p.P(`}`)
+			p.P(`if size2 != size {`)
+			p.In()
+			p.P(`t.Errorf("seed = %d, size %v != before marshal proto.Size %v", seed, size, size2)`)
+			p.Out()
+			p.P(`}`)
+			p.P(`size3 := `, protoPkg.Use(), `.Size(p)`)
+			p.P(`if size3 != size {`)
+			p.In()
+			p.P(`t.Errorf("seed = %d, size %v != after marshal proto.Size %v", seed, size, size3)`)
+			p.Out()
+			p.P(`}`)
+			p.Out()
+			p.P(`}`)
+			p.P()
+		}
+
+		if gogoproto.HasBenchGen(file.FileDescriptorProto, message.DescriptorProto) {
+			used = true
+			p.P(`func Benchmark`, ccTypeName, sizeName, `(b *`, testingPkg.Use(), `.B) {`)
+			p.In()
+			p.P(`popr := `, randPkg.Use(), `.New(`, randPkg.Use(), `.NewSource(616))`)
+			p.P(`total := 0`)
+			p.P(`pops := make([]*`, ccTypeName, `, 1000)`)
+			p.P(`for i := 0; i < 1000; i++ {`)
+			p.In()
+			p.P(`pops[i] = NewPopulated`, ccTypeName, `(popr, false)`)
+			p.Out()
+			p.P(`}`)
+			p.P(`b.ResetTimer()`)
+			p.P(`for i := 0; i < b.N; i++ {`)
+			p.In()
+			p.P(`total += pops[i%1000].`, sizeName, `()`)
+			p.Out()
+			p.P(`}`)
+			p.P(`b.SetBytes(int64(total / b.N))`)
+			p.Out()
+			p.P(`}`)
+			p.P()
+		}
+
+	}
+	return used
+}
+
+func init() {
+	testgen.RegisterTestPlugin(NewTest)
+}

vendor/github.com/gogo/protobuf/plugin/stringer/stringer.go

@@ -0,0 +1,296 @@
+// 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())
+}

vendor/github.com/gogo/protobuf/plugin/stringer/stringertest.go

@@ -0,0 +1,83 @@
+// 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.
+
+package stringer
+
+import (
+	"github.com/gogo/protobuf/gogoproto"
+	"github.com/gogo/protobuf/plugin/testgen"
+	"github.com/gogo/protobuf/protoc-gen-gogo/generator"
+)
+
+type test struct {
+	*generator.Generator
+}
+
+func NewTest(g *generator.Generator) testgen.TestPlugin {
+	return &test{g}
+}
+
+func (p *test) Generate(imports generator.PluginImports, file *generator.FileDescriptor) bool {
+	used := false
+	randPkg := imports.NewImport("math/rand")
+	timePkg := imports.NewImport("time")
+	testingPkg := imports.NewImport("testing")
+	fmtPkg := imports.NewImport("fmt")
+	for _, message := range file.Messages() {
+		ccTypeName := generator.CamelCaseSlice(message.TypeName())
+		if !gogoproto.IsStringer(file.FileDescriptorProto, message.DescriptorProto) {
+			continue
+		}
+		if message.DescriptorProto.GetOptions().GetMapEntry() {
+			continue
+		}
+
+		if gogoproto.HasTestGen(file.FileDescriptorProto, message.DescriptorProto) {
+			used = true
+			p.P(`func Test`, ccTypeName, `Stringer(t *`, testingPkg.Use(), `.T) {`)
+			p.In()
+			p.P(`popr := `, randPkg.Use(), `.New(`, randPkg.Use(), `.NewSource(`, timePkg.Use(), `.Now().UnixNano()))`)
+			p.P(`p := NewPopulated`, ccTypeName, `(popr, false)`)
+			p.P(`s1 := p.String()`)
+			p.P(`s2 := `, fmtPkg.Use(), `.Sprintf("%v", p)`)
+			p.P(`if s1 != s2 {`)
+			p.In()
+			p.P(`t.Fatalf("String want %v got %v", s1, s2)`)
+			p.Out()
+			p.P(`}`)
+			p.Out()
+			p.P(`}`)
+		}
+
+	}
+	return used
+}
+
+func init() {
+	testgen.RegisterTestPlugin(NewTest)
+}

vendor/github.com/gogo/protobuf/plugin/testgen/testgen.go

@@ -0,0 +1,608 @@
+// 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 testgen plugin generates Test and Benchmark functions for each message.
+
+Tests are enabled using the following extensions:
+
+  - testgen
+  - testgen_all
+
+Benchmarks are enabled using 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.testgen_all) = true;
+  option (gogoproto.benchgen_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 testgen plugin, will generate the following test code:
+
+	func TestAProto(t *testing.T) {
+		popr := math_rand.New(math_rand.NewSource(time.Now().UnixNano()))
+		p := NewPopulatedA(popr, false)
+		dAtA, err := github_com_gogo_protobuf_proto.Marshal(p)
+		if err != nil {
+			panic(err)
+		}
+		msg := &A{}
+		if err := github_com_gogo_protobuf_proto.Unmarshal(dAtA, msg); err != nil {
+			panic(err)
+		}
+		for i := range dAtA {
+			dAtA[i] = byte(popr.Intn(256))
+		}
+		if err := p.VerboseEqual(msg); err != nil {
+			t.Fatalf("%#v !VerboseProto %#v, since %v", msg, p, err)
+		}
+		if !p.Equal(msg) {
+			t.Fatalf("%#v !Proto %#v", msg, p)
+		}
+	}
+
+	func BenchmarkAProtoMarshal(b *testing.B) {
+		popr := math_rand.New(math_rand.NewSource(616))
+		total := 0
+		pops := make([]*A, 10000)
+		for i := 0; i < 10000; i++ {
+			pops[i] = NewPopulatedA(popr, false)
+		}
+		b.ResetTimer()
+		for i := 0; i < b.N; i++ {
+			dAtA, err := github_com_gogo_protobuf_proto.Marshal(pops[i%10000])
+			if err != nil {
+				panic(err)
+			}
+			total += len(dAtA)
+		}
+		b.SetBytes(int64(total / b.N))
+	}
+
+	func BenchmarkAProtoUnmarshal(b *testing.B) {
+		popr := math_rand.New(math_rand.NewSource(616))
+		total := 0
+		datas := make([][]byte, 10000)
+		for i := 0; i < 10000; i++ {
+			dAtA, err := github_com_gogo_protobuf_proto.Marshal(NewPopulatedA(popr, false))
+			if err != nil {
+				panic(err)
+			}
+			datas[i] = dAtA
+		}
+		msg := &A{}
+		b.ResetTimer()
+		for i := 0; i < b.N; i++ {
+			total += len(datas[i%10000])
+			if err := github_com_gogo_protobuf_proto.Unmarshal(datas[i%10000], msg); err != nil {
+				panic(err)
+			}
+		}
+		b.SetBytes(int64(total / b.N))
+	}
+
+
+	func TestAJSON(t *testing1.T) {
+		popr := math_rand1.New(math_rand1.NewSource(time1.Now().UnixNano()))
+		p := NewPopulatedA(popr, true)
+		jsondata, err := encoding_json.Marshal(p)
+		if err != nil {
+			panic(err)
+		}
+		msg := &A{}
+		err = encoding_json.Unmarshal(jsondata, msg)
+		if err != nil {
+			panic(err)
+		}
+		if err := p.VerboseEqual(msg); err != nil {
+			t.Fatalf("%#v !VerboseProto %#v, since %v", msg, p, err)
+		}
+		if !p.Equal(msg) {
+			t.Fatalf("%#v !Json Equal %#v", msg, p)
+		}
+	}
+
+	func TestAProtoText(t *testing2.T) {
+		popr := math_rand2.New(math_rand2.NewSource(time2.Now().UnixNano()))
+		p := NewPopulatedA(popr, true)
+		dAtA := github_com_gogo_protobuf_proto1.MarshalTextString(p)
+		msg := &A{}
+		if err := github_com_gogo_protobuf_proto1.UnmarshalText(dAtA, msg); err != nil {
+			panic(err)
+		}
+		if err := p.VerboseEqual(msg); err != nil {
+			t.Fatalf("%#v !VerboseProto %#v, since %v", msg, p, err)
+		}
+		if !p.Equal(msg) {
+			t.Fatalf("%#v !Proto %#v", msg, p)
+		}
+	}
+
+	func TestAProtoCompactText(t *testing2.T) {
+		popr := math_rand2.New(math_rand2.NewSource(time2.Now().UnixNano()))
+		p := NewPopulatedA(popr, true)
+		dAtA := github_com_gogo_protobuf_proto1.CompactTextString(p)
+		msg := &A{}
+		if err := github_com_gogo_protobuf_proto1.UnmarshalText(dAtA, msg); err != nil {
+			panic(err)
+		}
+		if err := p.VerboseEqual(msg); err != nil {
+			t.Fatalf("%#v !VerboseProto %#v, since %v", msg, p, err)
+		}
+		if !p.Equal(msg) {
+			t.Fatalf("%#v !Proto %#v", msg, p)
+		}
+	}
+
+Other registered tests are also generated.
+Tests are registered to this test plugin by calling the following function.
+
+  func RegisterTestPlugin(newFunc NewTestPlugin)
+
+where NewTestPlugin is:
+
+  type NewTestPlugin func(g *generator.Generator) TestPlugin
+
+and TestPlugin is an interface:
+
+  type TestPlugin interface {
+	Generate(imports generator.PluginImports, file *generator.FileDescriptor) (used bool)
+  }
+
+Plugins that use this interface include:
+
+  - populate
+  - gostring
+  - equal
+  - union
+  - and more
+
+Please look at these plugins as examples of how to create your own.
+A good idea is to let each plugin generate its own tests.
+
+*/
+package testgen
+
+import (
+	"github.com/gogo/protobuf/gogoproto"
+	"github.com/gogo/protobuf/protoc-gen-gogo/generator"
+)
+
+type TestPlugin interface {
+	Generate(imports generator.PluginImports, file *generator.FileDescriptor) (used bool)
+}
+
+type NewTestPlugin func(g *generator.Generator) TestPlugin
+
+var testplugins = make([]NewTestPlugin, 0)
+
+func RegisterTestPlugin(newFunc NewTestPlugin) {
+	testplugins = append(testplugins, newFunc)
+}
+
+type plugin struct {
+	*generator.Generator
+	generator.PluginImports
+	tests []TestPlugin
+}
+
+func NewPlugin() *plugin {
+	return &plugin{}
+}
+
+func (p *plugin) Name() string {
+	return "testgen"
+}
+
+func (p *plugin) Init(g *generator.Generator) {
+	p.Generator = g
+	p.tests = make([]TestPlugin, 0, len(testplugins))
+	for i := range testplugins {
+		p.tests = append(p.tests, testplugins[i](g))
+	}
+}
+
+func (p *plugin) Generate(file *generator.FileDescriptor) {
+	p.PluginImports = generator.NewPluginImports(p.Generator)
+	atLeastOne := false
+	for i := range p.tests {
+		used := p.tests[i].Generate(p.PluginImports, file)
+		if used {
+			atLeastOne = true
+		}
+	}
+	if atLeastOne {
+		p.P(`//These tests are generated by github.com/gogo/protobuf/plugin/testgen`)
+	}
+}
+
+type testProto struct {
+	*generator.Generator
+}
+
+func newProto(g *generator.Generator) TestPlugin {
+	return &testProto{g}
+}
+
+func (p *testProto) Generate(imports generator.PluginImports, file *generator.FileDescriptor) bool {
+	used := false
+	testingPkg := imports.NewImport("testing")
+	randPkg := imports.NewImport("math/rand")
+	timePkg := imports.NewImport("time")
+	protoPkg := imports.NewImport("github.com/gogo/protobuf/proto")
+	if !gogoproto.ImportsGoGoProto(file.FileDescriptorProto) {
+		protoPkg = imports.NewImport("github.com/golang/protobuf/proto")
+	}
+	for _, message := range file.Messages() {
+		ccTypeName := generator.CamelCaseSlice(message.TypeName())
+		if message.DescriptorProto.GetOptions().GetMapEntry() {
+			continue
+		}
+		if gogoproto.HasTestGen(file.FileDescriptorProto, message.DescriptorProto) {
+			used = true
+
+			p.P(`func Test`, ccTypeName, `Proto(t *`, testingPkg.Use(), `.T) {`)
+			p.In()
+			p.P(`seed := `, timePkg.Use(), `.Now().UnixNano()`)
+			p.P(`popr := `, randPkg.Use(), `.New(`, randPkg.Use(), `.NewSource(seed))`)
+			p.P(`p := NewPopulated`, ccTypeName, `(popr, false)`)
+			p.P(`dAtA, err := `, protoPkg.Use(), `.Marshal(p)`)
+			p.P(`if err != nil {`)
+			p.In()
+			p.P(`t.Fatalf("seed = %d, err = %v", seed, err)`)
+			p.Out()
+			p.P(`}`)
+			p.P(`msg := &`, ccTypeName, `{}`)
+			p.P(`if err := `, protoPkg.Use(), `.Unmarshal(dAtA, msg); err != nil {`)
+			p.In()
+			p.P(`t.Fatalf("seed = %d, err = %v", seed, err)`)
+			p.Out()
+			p.P(`}`)
+			p.P(`littlefuzz := make([]byte, len(dAtA))`)
+			p.P(`copy(littlefuzz, dAtA)`)
+			p.P(`for i := range dAtA {`)
+			p.In()
+			p.P(`dAtA[i] = byte(popr.Intn(256))`)
+			p.Out()
+			p.P(`}`)
+			if gogoproto.HasVerboseEqual(file.FileDescriptorProto, message.DescriptorProto) {
+				p.P(`if err := p.VerboseEqual(msg); err != nil {`)
+				p.In()
+				p.P(`t.Fatalf("seed = %d, %#v !VerboseProto %#v, since %v", seed, msg, p, err)`)
+				p.Out()
+				p.P(`}`)
+			}
+			p.P(`if !p.Equal(msg) {`)
+			p.In()
+			p.P(`t.Fatalf("seed = %d, %#v !Proto %#v", seed, msg, p)`)
+			p.Out()
+			p.P(`}`)
+			p.P(`if len(littlefuzz) > 0 {`)
+			p.In()
+			p.P(`fuzzamount := 100`)
+			p.P(`for i := 0; i < fuzzamount; i++ {`)
+			p.In()
+			p.P(`littlefuzz[popr.Intn(len(littlefuzz))] = byte(popr.Intn(256))`)
+			p.P(`littlefuzz = append(littlefuzz, byte(popr.Intn(256)))`)
+			p.Out()
+			p.P(`}`)
+			p.P(`// shouldn't panic`)
+			p.P(`_ = `, protoPkg.Use(), `.Unmarshal(littlefuzz, msg)`)
+			p.Out()
+			p.P(`}`)
+			p.Out()
+			p.P(`}`)
+			p.P()
+		}
+
+		if gogoproto.HasTestGen(file.FileDescriptorProto, message.DescriptorProto) {
+			if gogoproto.IsMarshaler(file.FileDescriptorProto, message.DescriptorProto) || gogoproto.IsUnsafeMarshaler(file.FileDescriptorProto, message.DescriptorProto) {
+				p.P(`func Test`, ccTypeName, `MarshalTo(t *`, testingPkg.Use(), `.T) {`)
+				p.In()
+				p.P(`seed := `, timePkg.Use(), `.Now().UnixNano()`)
+				p.P(`popr := `, randPkg.Use(), `.New(`, randPkg.Use(), `.NewSource(seed))`)
+				p.P(`p := NewPopulated`, ccTypeName, `(popr, false)`)
+				if gogoproto.IsProtoSizer(file.FileDescriptorProto, message.DescriptorProto) {
+					p.P(`size := p.ProtoSize()`)
+				} else {
+					p.P(`size := p.Size()`)
+				}
+				p.P(`dAtA := make([]byte, size)`)
+				p.P(`for i := range dAtA {`)
+				p.In()
+				p.P(`dAtA[i] = byte(popr.Intn(256))`)
+				p.Out()
+				p.P(`}`)
+				p.P(`_, err := p.MarshalTo(dAtA)`)
+				p.P(`if err != nil {`)
+				p.In()
+				p.P(`t.Fatalf("seed = %d, err = %v", seed, err)`)
+				p.Out()
+				p.P(`}`)
+				p.P(`msg := &`, ccTypeName, `{}`)
+				p.P(`if err := `, protoPkg.Use(), `.Unmarshal(dAtA, msg); err != nil {`)
+				p.In()
+				p.P(`t.Fatalf("seed = %d, err = %v", seed, err)`)
+				p.Out()
+				p.P(`}`)
+				p.P(`for i := range dAtA {`)
+				p.In()
+				p.P(`dAtA[i] = byte(popr.Intn(256))`)
+				p.Out()
+				p.P(`}`)
+				if gogoproto.HasVerboseEqual(file.FileDescriptorProto, message.DescriptorProto) {
+					p.P(`if err := p.VerboseEqual(msg); err != nil {`)
+					p.In()
+					p.P(`t.Fatalf("seed = %d, %#v !VerboseProto %#v, since %v", seed, msg, p, err)`)
+					p.Out()
+					p.P(`}`)
+				}
+				p.P(`if !p.Equal(msg) {`)
+				p.In()
+				p.P(`t.Fatalf("seed = %d, %#v !Proto %#v", seed, msg, p)`)
+				p.Out()
+				p.P(`}`)
+				p.Out()
+				p.P(`}`)
+				p.P()
+			}
+		}
+
+		if gogoproto.HasBenchGen(file.FileDescriptorProto, message.DescriptorProto) {
+			used = true
+			p.P(`func Benchmark`, ccTypeName, `ProtoMarshal(b *`, testingPkg.Use(), `.B) {`)
+			p.In()
+			p.P(`popr := `, randPkg.Use(), `.New(`, randPkg.Use(), `.NewSource(616))`)
+			p.P(`total := 0`)
+			p.P(`pops := make([]*`, ccTypeName, `, 10000)`)
+			p.P(`for i := 0; i < 10000; i++ {`)
+			p.In()
+			p.P(`pops[i] = NewPopulated`, ccTypeName, `(popr, false)`)
+			p.Out()
+			p.P(`}`)
+			p.P(`b.ResetTimer()`)
+			p.P(`for i := 0; i < b.N; i++ {`)
+			p.In()
+			p.P(`dAtA, err := `, protoPkg.Use(), `.Marshal(pops[i%10000])`)
+			p.P(`if err != nil {`)
+			p.In()
+			p.P(`panic(err)`)
+			p.Out()
+			p.P(`}`)
+			p.P(`total += len(dAtA)`)
+			p.Out()
+			p.P(`}`)
+			p.P(`b.SetBytes(int64(total / b.N))`)
+			p.Out()
+			p.P(`}`)
+			p.P()
+
+			p.P(`func Benchmark`, ccTypeName, `ProtoUnmarshal(b *`, testingPkg.Use(), `.B) {`)
+			p.In()
+			p.P(`popr := `, randPkg.Use(), `.New(`, randPkg.Use(), `.NewSource(616))`)
+			p.P(`total := 0`)
+			p.P(`datas := make([][]byte, 10000)`)
+			p.P(`for i := 0; i < 10000; i++ {`)
+			p.In()
+			p.P(`dAtA, err := `, protoPkg.Use(), `.Marshal(NewPopulated`, ccTypeName, `(popr, false))`)
+			p.P(`if err != nil {`)
+			p.In()
+			p.P(`panic(err)`)
+			p.Out()
+			p.P(`}`)
+			p.P(`datas[i] = dAtA`)
+			p.Out()
+			p.P(`}`)
+			p.P(`msg := &`, ccTypeName, `{}`)
+			p.P(`b.ResetTimer()`)
+			p.P(`for i := 0; i < b.N; i++ {`)
+			p.In()
+			p.P(`total += len(datas[i%10000])`)
+			p.P(`if err := `, protoPkg.Use(), `.Unmarshal(datas[i%10000], msg); err != nil {`)
+			p.In()
+			p.P(`panic(err)`)
+			p.Out()
+			p.P(`}`)
+			p.Out()
+			p.P(`}`)
+			p.P(`b.SetBytes(int64(total / b.N))`)
+			p.Out()
+			p.P(`}`)
+			p.P()
+		}
+	}
+	return used
+}
+
+type testJson struct {
+	*generator.Generator
+}
+
+func newJson(g *generator.Generator) TestPlugin {
+	return &testJson{g}
+}
+
+func (p *testJson) Generate(imports generator.PluginImports, file *generator.FileDescriptor) bool {
+	used := false
+	testingPkg := imports.NewImport("testing")
+	randPkg := imports.NewImport("math/rand")
+	timePkg := imports.NewImport("time")
+	jsonPkg := imports.NewImport("github.com/gogo/protobuf/jsonpb")
+	for _, message := range file.Messages() {
+		ccTypeName := generator.CamelCaseSlice(message.TypeName())
+		if message.DescriptorProto.GetOptions().GetMapEntry() {
+			continue
+		}
+		if gogoproto.HasTestGen(file.FileDescriptorProto, message.DescriptorProto) {
+			used = true
+			p.P(`func Test`, ccTypeName, `JSON(t *`, testingPkg.Use(), `.T) {`)
+			p.In()
+			p.P(`seed := `, timePkg.Use(), `.Now().UnixNano()`)
+			p.P(`popr := `, randPkg.Use(), `.New(`, randPkg.Use(), `.NewSource(seed))`)
+			p.P(`p := NewPopulated`, ccTypeName, `(popr, true)`)
+			p.P(`marshaler := `, jsonPkg.Use(), `.Marshaler{}`)
+			p.P(`jsondata, err := marshaler.MarshalToString(p)`)
+			p.P(`if err != nil {`)
+			p.In()
+			p.P(`t.Fatalf("seed = %d, err = %v", seed, err)`)
+			p.Out()
+			p.P(`}`)
+			p.P(`msg := &`, ccTypeName, `{}`)
+			p.P(`err = `, jsonPkg.Use(), `.UnmarshalString(jsondata, msg)`)
+			p.P(`if err != nil {`)
+			p.In()
+			p.P(`t.Fatalf("seed = %d, err = %v", seed, err)`)
+			p.Out()
+			p.P(`}`)
+			if gogoproto.HasVerboseEqual(file.FileDescriptorProto, message.DescriptorProto) {
+				p.P(`if err := p.VerboseEqual(msg); err != nil {`)
+				p.In()
+				p.P(`t.Fatalf("seed = %d, %#v !VerboseProto %#v, since %v", seed, msg, p, err)`)
+				p.Out()
+				p.P(`}`)
+			}
+			p.P(`if !p.Equal(msg) {`)
+			p.In()
+			p.P(`t.Fatalf("seed = %d, %#v !Json Equal %#v", seed, msg, p)`)
+			p.Out()
+			p.P(`}`)
+			p.Out()
+			p.P(`}`)
+		}
+	}
+	return used
+}
+
+type testText struct {
+	*generator.Generator
+}
+
+func newText(g *generator.Generator) TestPlugin {
+	return &testText{g}
+}
+
+func (p *testText) Generate(imports generator.PluginImports, file *generator.FileDescriptor) bool {
+	used := false
+	testingPkg := imports.NewImport("testing")
+	randPkg := imports.NewImport("math/rand")
+	timePkg := imports.NewImport("time")
+	protoPkg := imports.NewImport("github.com/gogo/protobuf/proto")
+	if !gogoproto.ImportsGoGoProto(file.FileDescriptorProto) {
+		protoPkg = imports.NewImport("github.com/golang/protobuf/proto")
+	}
+	//fmtPkg := imports.NewImport("fmt")
+	for _, message := range file.Messages() {
+		ccTypeName := generator.CamelCaseSlice(message.TypeName())
+		if message.DescriptorProto.GetOptions().GetMapEntry() {
+			continue
+		}
+		if gogoproto.HasTestGen(file.FileDescriptorProto, message.DescriptorProto) {
+			used = true
+
+			p.P(`func Test`, ccTypeName, `ProtoText(t *`, testingPkg.Use(), `.T) {`)
+			p.In()
+			p.P(`seed := `, timePkg.Use(), `.Now().UnixNano()`)
+			p.P(`popr := `, randPkg.Use(), `.New(`, randPkg.Use(), `.NewSource(seed))`)
+			p.P(`p := NewPopulated`, ccTypeName, `(popr, true)`)
+			p.P(`dAtA := `, protoPkg.Use(), `.MarshalTextString(p)`)
+			p.P(`msg := &`, ccTypeName, `{}`)
+			p.P(`if err := `, protoPkg.Use(), `.UnmarshalText(dAtA, msg); err != nil {`)
+			p.In()
+			p.P(`t.Fatalf("seed = %d, err = %v", seed, err)`)
+			p.Out()
+			p.P(`}`)
+			if gogoproto.HasVerboseEqual(file.FileDescriptorProto, message.DescriptorProto) {
+				p.P(`if err := p.VerboseEqual(msg); err != nil {`)
+				p.In()
+				p.P(`t.Fatalf("seed = %d, %#v !VerboseProto %#v, since %v", seed, msg, p, err)`)
+				p.Out()
+				p.P(`}`)
+			}
+			p.P(`if !p.Equal(msg) {`)
+			p.In()
+			p.P(`t.Fatalf("seed = %d, %#v !Proto %#v", seed, msg, p)`)
+			p.Out()
+			p.P(`}`)
+			p.Out()
+			p.P(`}`)
+			p.P()
+
+			p.P(`func Test`, ccTypeName, `ProtoCompactText(t *`, testingPkg.Use(), `.T) {`)
+			p.In()
+			p.P(`seed := `, timePkg.Use(), `.Now().UnixNano()`)
+			p.P(`popr := `, randPkg.Use(), `.New(`, randPkg.Use(), `.NewSource(seed))`)
+			p.P(`p := NewPopulated`, ccTypeName, `(popr, true)`)
+			p.P(`dAtA := `, protoPkg.Use(), `.CompactTextString(p)`)
+			p.P(`msg := &`, ccTypeName, `{}`)
+			p.P(`if err := `, protoPkg.Use(), `.UnmarshalText(dAtA, msg); err != nil {`)
+			p.In()
+			p.P(`t.Fatalf("seed = %d, err = %v", seed, err)`)
+			p.Out()
+			p.P(`}`)
+			if gogoproto.HasVerboseEqual(file.FileDescriptorProto, message.DescriptorProto) {
+				p.P(`if err := p.VerboseEqual(msg); err != nil {`)
+				p.In()
+				p.P(`t.Fatalf("seed = %d, %#v !VerboseProto %#v, since %v", seed, msg, p, err)`)
+				p.Out()
+				p.P(`}`)
+			}
+			p.P(`if !p.Equal(msg) {`)
+			p.In()
+			p.P(`t.Fatalf("seed = %d, %#v !Proto %#v", seed, msg, p)`)
+			p.Out()
+			p.P(`}`)
+			p.Out()
+			p.P(`}`)
+			p.P()
+
+		}
+	}
+	return used
+}
+
+func init() {
+	RegisterTestPlugin(newProto)
+	RegisterTestPlugin(newJson)
+	RegisterTestPlugin(newText)
+}

vendor/github.com/gogo/protobuf/plugin/union/union.go

@@ -0,0 +1,209 @@
+// 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 onlyone plugin generates code for the onlyone extension.
+All fields must be nullable and only one of the fields may be set, like a union.
+Two methods are generated
+
+  GetValue() interface{}
+
+and
+
+  SetValue(v interface{}) (set bool)
+
+These provide easier interaction with a onlyone.
+
+The onlyone extension is not called union as this causes compile errors in the C++ generated code.
+There can only be one ;)
+
+It is enabled by the following extensions:
+
+  - onlyone
+  - onlyone_all
+
+The onlyone plugin also generates a test given it is enabled using one of the following extensions:
+
+  - testgen
+  - testgen_all
+
+Lets 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:
+
+  message U {
+	  option (gogoproto.onlyone) = true;
+	  optional A A = 1;
+	  optional B B = 2;
+  }
+
+given to the onlyone plugin, will generate code which looks a lot like this:
+
+	func (this *U) GetValue() interface{} {
+		if this.A != nil {
+			return this.A
+		}
+		if this.B != nil {
+			return this.B
+		}
+		return nil
+	}
+
+	func (this *U) SetValue(value interface{}) bool {
+		switch vt := value.(type) {
+		case *A:
+			this.A = vt
+		case *B:
+			this.B = vt
+		default:
+			return false
+		}
+		return true
+	}
+
+and the following test code:
+
+  func TestUUnion(t *testing.T) {
+	popr := math_rand.New(math_rand.NewSource(time.Now().UnixNano()))
+	p := NewPopulatedU(popr)
+	v := p.GetValue()
+	msg := &U{}
+	if !msg.SetValue(v) {
+		t.Fatalf("Union: Could not set Value")
+	}
+	if !p.Equal(msg) {
+		t.Fatalf("%#v !Union Equal %#v", msg, p)
+	}
+  }
+
+*/
+package union
+
+import (
+	"github.com/gogo/protobuf/gogoproto"
+	"github.com/gogo/protobuf/protoc-gen-gogo/generator"
+)
+
+type union struct {
+	*generator.Generator
+	generator.PluginImports
+}
+
+func NewUnion() *union {
+	return &union{}
+}
+
+func (p *union) Name() string {
+	return "union"
+}
+
+func (p *union) Init(g *generator.Generator) {
+	p.Generator = g
+}
+
+func (p *union) Generate(file *generator.FileDescriptor) {
+	p.PluginImports = generator.NewPluginImports(p.Generator)
+
+	for _, message := range file.Messages() {
+		if !gogoproto.IsUnion(file.FileDescriptorProto, message.DescriptorProto) {
+			continue
+		}
+		if message.DescriptorProto.HasExtension() {
+			panic("onlyone does not currently support extensions")
+		}
+		if message.DescriptorProto.GetOptions().GetMapEntry() {
+			continue
+		}
+
+		ccTypeName := generator.CamelCaseSlice(message.TypeName())
+		p.P(`func (this *`, ccTypeName, `) GetValue() interface{} {`)
+		p.In()
+		for _, field := range message.Field {
+			fieldname := p.GetFieldName(message, field)
+			if fieldname == "Value" {
+				panic("cannot have a onlyone message " + ccTypeName + " with a field named Value")
+			}
+			p.P(`if this.`, fieldname, ` != nil {`)
+			p.In()
+			p.P(`return this.`, fieldname)
+			p.Out()
+			p.P(`}`)
+		}
+		p.P(`return nil`)
+		p.Out()
+		p.P(`}`)
+		p.P(``)
+		p.P(`func (this *`, ccTypeName, `) SetValue(value interface{}) bool {`)
+		p.In()
+		p.P(`switch vt := value.(type) {`)
+		p.In()
+		for _, field := range message.Field {
+			fieldname := p.GetFieldName(message, field)
+			goTyp, _ := p.GoType(message, field)
+			p.P(`case `, goTyp, `:`)
+			p.In()
+			p.P(`this.`, fieldname, ` = vt`)
+			p.Out()
+		}
+		p.P(`default:`)
+		p.In()
+		for _, field := range message.Field {
+			fieldname := p.GetFieldName(message, field)
+			if field.IsMessage() {
+				goTyp, _ := p.GoType(message, field)
+				obj := p.ObjectNamed(field.GetTypeName()).(*generator.Descriptor)
+
+				if gogoproto.IsUnion(obj.File().FileDescriptorProto, obj.DescriptorProto) {
+					p.P(`this.`, fieldname, ` = new(`, generator.GoTypeToName(goTyp), `)`)
+					p.P(`if set := this.`, fieldname, `.SetValue(value); set {`)
+					p.In()
+					p.P(`return true`)
+					p.Out()
+					p.P(`}`)
+					p.P(`this.`, fieldname, ` = nil`)
+				}
+			}
+		}
+		p.P(`return false`)
+		p.Out()
+		p.P(`}`)
+		p.P(`return true`)
+		p.Out()
+		p.P(`}`)
+	}
+}
+
+func init() {
+	generator.RegisterPlugin(NewUnion())
+}

vendor/github.com/gogo/protobuf/plugin/union/uniontest.go

@@ -0,0 +1,86 @@
+// 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.
+
+package union
+
+import (
+	"github.com/gogo/protobuf/gogoproto"
+	"github.com/gogo/protobuf/plugin/testgen"
+	"github.com/gogo/protobuf/protoc-gen-gogo/generator"
+)
+
+type test struct {
+	*generator.Generator
+}
+
+func NewTest(g *generator.Generator) testgen.TestPlugin {
+	return &test{g}
+}
+
+func (p *test) Generate(imports generator.PluginImports, file *generator.FileDescriptor) bool {
+	used := false
+	randPkg := imports.NewImport("math/rand")
+	timePkg := imports.NewImport("time")
+	testingPkg := imports.NewImport("testing")
+	for _, message := range file.Messages() {
+		if !gogoproto.IsUnion(file.FileDescriptorProto, message.DescriptorProto) ||
+			!gogoproto.HasTestGen(file.FileDescriptorProto, message.DescriptorProto) {
+			continue
+		}
+		if message.DescriptorProto.GetOptions().GetMapEntry() {
+			continue
+		}
+		used = true
+		ccTypeName := generator.CamelCaseSlice(message.TypeName())
+
+		p.P(`func Test`, ccTypeName, `OnlyOne(t *`, testingPkg.Use(), `.T) {`)
+		p.In()
+		p.P(`popr := `, randPkg.Use(), `.New(`, randPkg.Use(), `.NewSource(`, timePkg.Use(), `.Now().UnixNano()))`)
+		p.P(`p := NewPopulated`, ccTypeName, `(popr, true)`)
+		p.P(`v := p.GetValue()`)
+		p.P(`msg := &`, ccTypeName, `{}`)
+		p.P(`if !msg.SetValue(v) {`)
+		p.In()
+		p.P(`t.Fatalf("OnlyOne: Could not set Value")`)
+		p.Out()
+		p.P(`}`)
+		p.P(`if !p.Equal(msg) {`)
+		p.In()
+		p.P(`t.Fatalf("%#v !OnlyOne Equal %#v", msg, p)`)
+		p.Out()
+		p.P(`}`)
+		p.Out()
+		p.P(`}`)
+
+	}
+	return used
+}
+
+func init() {
+	testgen.RegisterTestPlugin(NewTest)
+}