cmd/protoc-gen-go: add support for field-tracking
Field-tracking is an experimental feature in the Go linker
where it statically tracks whether a Go struct field is used.
This CL modifies the generator to emit special markers that
tells the linker to know which fields to track.
Change-Id: I235da3f3d6c0ef2021b5fe1c16106ebb8fd6f557
Reviewed-on: https://go-review.googlesource.com/c/protobuf/+/189558
Reviewed-by: Damien Neil <dneil@google.com>
diff --git a/internal/testprotos/annotation/annotation.pb.go b/internal/testprotos/annotation/annotation.pb.go
new file mode 100644
index 0000000..74b4cdc
--- /dev/null
+++ b/internal/testprotos/annotation/annotation.pb.go
@@ -0,0 +1,106 @@
+// Copyright 2019 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Code generated by protoc-gen-go. DO NOT EDIT.
+// source: annotation/annotation.proto
+
+package annotation
+
+import (
+ protoreflect "google.golang.org/protobuf/reflect/protoreflect"
+ protoimpl "google.golang.org/protobuf/runtime/protoimpl"
+ descriptorpb "google.golang.org/protobuf/types/descriptorpb"
+ reflect "reflect"
+ sync "sync"
+)
+
+var file_annotation_annotation_proto_extTypes = []protoimpl.ExtensionInfo{
+ {
+ ExtendedType: (*descriptorpb.MessageOptions)(nil),
+ ExtensionType: (*bool)(nil),
+ Field: 37383685,
+ Name: "go_annotation.track_field_use",
+ Tag: "varint,37383685,opt,name=track_field_use",
+ Filename: "annotation/annotation.proto",
+ },
+}
+
+// Extension fields to descriptorpb.MessageOptions.
+var (
+ // Setting this on a message enables tracking of which fields in the message
+ // a specific binary might access. As a consequence, it also disables the use
+ // of the message accessor methods to satisfy interfaces: they can only be
+ // called directly.
+ //
+ // optional bool track_field_use = 37383685;
+ E_TrackFieldUse = &file_annotation_annotation_proto_extTypes[0]
+)
+
+var File_annotation_annotation_proto protoreflect.FileDescriptor
+
+var file_annotation_annotation_proto_rawDesc = []byte{
+ 0x0a, 0x1b, 0x61, 0x6e, 0x6e, 0x6f, 0x74, 0x61, 0x74, 0x69, 0x6f, 0x6e, 0x2f, 0x61, 0x6e, 0x6e,
+ 0x6f, 0x74, 0x61, 0x74, 0x69, 0x6f, 0x6e, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x12, 0x0d, 0x67,
+ 0x6f, 0x5f, 0x61, 0x6e, 0x6e, 0x6f, 0x74, 0x61, 0x74, 0x69, 0x6f, 0x6e, 0x1a, 0x20, 0x67, 0x6f,
+ 0x6f, 0x67, 0x6c, 0x65, 0x2f, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x62, 0x75, 0x66, 0x2f, 0x64, 0x65,
+ 0x73, 0x63, 0x72, 0x69, 0x70, 0x74, 0x6f, 0x72, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x3a, 0x4a,
+ 0x0a, 0x0f, 0x74, 0x72, 0x61, 0x63, 0x6b, 0x5f, 0x66, 0x69, 0x65, 0x6c, 0x64, 0x5f, 0x75, 0x73,
+ 0x65, 0x12, 0x1f, 0x2e, 0x67, 0x6f, 0x6f, 0x67, 0x6c, 0x65, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f,
+ 0x62, 0x75, 0x66, 0x2e, 0x4d, 0x65, 0x73, 0x73, 0x61, 0x67, 0x65, 0x4f, 0x70, 0x74, 0x69, 0x6f,
+ 0x6e, 0x73, 0x18, 0x85, 0xdc, 0xe9, 0x11, 0x20, 0x01, 0x28, 0x08, 0x52, 0x0d, 0x74, 0x72, 0x61,
+ 0x63, 0x6b, 0x46, 0x69, 0x65, 0x6c, 0x64, 0x55, 0x73, 0x65, 0x42, 0x3b, 0x5a, 0x39, 0x67, 0x6f,
+ 0x6f, 0x67, 0x6c, 0x65, 0x2e, 0x67, 0x6f, 0x6c, 0x61, 0x6e, 0x67, 0x2e, 0x6f, 0x72, 0x67, 0x2f,
+ 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x62, 0x75, 0x66, 0x2f, 0x69, 0x6e, 0x74, 0x65, 0x72, 0x6e, 0x61,
+ 0x6c, 0x2f, 0x74, 0x65, 0x73, 0x74, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x73, 0x2f, 0x61, 0x6e, 0x6e,
+ 0x6f, 0x74, 0x61, 0x74, 0x69, 0x6f, 0x6e,
+}
+
+var (
+ file_annotation_annotation_proto_rawDescOnce sync.Once
+ file_annotation_annotation_proto_rawDescData = file_annotation_annotation_proto_rawDesc
+)
+
+func file_annotation_annotation_proto_rawDescGZIP() []byte {
+ file_annotation_annotation_proto_rawDescOnce.Do(func() {
+ file_annotation_annotation_proto_rawDescData = protoimpl.X.CompressGZIP(file_annotation_annotation_proto_rawDescData)
+ })
+ return file_annotation_annotation_proto_rawDescData
+}
+
+var file_annotation_annotation_proto_goTypes = []interface{}{
+ (*descriptorpb.MessageOptions)(nil), // 0: google.protobuf.MessageOptions
+}
+var file_annotation_annotation_proto_depIdxs = []int32{
+ 0, // 0: go_annotation.track_field_use:extendee -> google.protobuf.MessageOptions
+ 1, // [1:1] is the sub-list for method output_type
+ 1, // [1:1] is the sub-list for method input_type
+ 1, // [1:1] is the sub-list for extension type_name
+ 0, // [0:1] is the sub-list for extension extendee
+ 0, // [0:0] is the sub-list for field type_name
+}
+
+func init() { file_annotation_annotation_proto_init() }
+func file_annotation_annotation_proto_init() {
+ if File_annotation_annotation_proto != nil {
+ return
+ }
+ type x struct{}
+ out := protoimpl.TypeBuilder{
+ File: protoimpl.DescBuilder{
+ GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
+ RawDescriptor: file_annotation_annotation_proto_rawDesc,
+ NumEnums: 0,
+ NumMessages: 0,
+ NumExtensions: 1,
+ NumServices: 0,
+ },
+ GoTypes: file_annotation_annotation_proto_goTypes,
+ DependencyIndexes: file_annotation_annotation_proto_depIdxs,
+ ExtensionInfos: file_annotation_annotation_proto_extTypes,
+ }.Build()
+ File_annotation_annotation_proto = out.File
+ file_annotation_annotation_proto_rawDesc = nil
+ file_annotation_annotation_proto_goTypes = nil
+ file_annotation_annotation_proto_depIdxs = nil
+}