mirror of
https://gitea.com/Lydanne/buildx.git
synced 2025-11-04 18:13:42 +08:00
387 lines
12 KiB
Go
387 lines
12 KiB
Go
// 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())
|
|
}
|