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21d187aa53
This flag is used by the (Google-internal) editions codegen test. Having the functionality in the open source repository reduces our maintenance burden (fewer/smaller patches). Change-Id: Idb9c95e9b2cb8922584bcb7ca13a8ddef4347af0 Reviewed-on: https://go-review.googlesource.com/c/protobuf/+/606735 LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Lasse Folger <lassefolger@google.com>
61 lines
2.3 KiB
Go
61 lines
2.3 KiB
Go
// Copyright 2018 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// The protoc-gen-go binary is a protoc plugin to generate Go code for
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// both proto2 and proto3 versions of the protocol buffer language.
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//
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// For more information about the usage of this plugin, see:
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// https://protobuf.dev/reference/go/go-generated.
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package main
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import (
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"errors"
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"flag"
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"fmt"
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"os"
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"path/filepath"
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gengo "google.golang.org/protobuf/cmd/protoc-gen-go/internal_gengo"
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"google.golang.org/protobuf/compiler/protogen"
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"google.golang.org/protobuf/internal/version"
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)
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const genGoDocURL = "https://protobuf.dev/reference/go/go-generated"
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const grpcDocURL = "https://grpc.io/docs/languages/go/quickstart/#regenerate-grpc-code"
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func main() {
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if len(os.Args) == 2 && os.Args[1] == "--version" {
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fmt.Fprintf(os.Stdout, "%v %v\n", filepath.Base(os.Args[0]), version.String())
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os.Exit(0)
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}
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if len(os.Args) == 2 && os.Args[1] == "--help" {
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fmt.Fprintf(os.Stdout, "See "+genGoDocURL+" for usage information.\n")
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os.Exit(0)
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}
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var (
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flags flag.FlagSet
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plugins = flags.String("plugins", "", "deprecated option")
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experimentalStripNonFunctionalCodegen = flags.Bool("experimental_strip_nonfunctional_codegen", false, "experimental_strip_nonfunctional_codegen true means that the plugin will not emit certain parts of the generated code in order to make it possible to compare a proto2/proto3 file with its equivalent (according to proto spec) editions file. Primarily, this is the encoded descriptor.")
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)
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protogen.Options{
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ParamFunc: flags.Set,
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InternalStripForEditionsDiff: experimentalStripNonFunctionalCodegen,
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}.Run(func(gen *protogen.Plugin) error {
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if *plugins != "" {
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return errors.New("protoc-gen-go: plugins are not supported; use 'protoc --go-grpc_out=...' to generate gRPC\n\n" +
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"See " + grpcDocURL + " for more information.")
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}
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for _, f := range gen.Files {
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if f.Generate {
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gengo.GenerateFile(gen, f)
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}
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}
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gen.SupportedFeatures = gengo.SupportedFeatures
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gen.SupportedEditionsMinimum = gengo.SupportedEditionsMinimum
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gen.SupportedEditionsMaximum = gengo.SupportedEditionsMaximum
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return nil
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})
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}
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