protoc-gen-go: Add Filename to ExtensionDesc.
This will allow looking up the FileDescriptorProto for the file that
defines an extension of a message, for richer introspection.
diff --git a/proto/extensions.go b/proto/extensions.go
index 6b9b363..eaad218 100644
--- a/proto/extensions.go
+++ b/proto/extensions.go
@@ -154,6 +154,7 @@
Field int32 // field number
Name string // fully-qualified name of extension, for text formatting
Tag string // protobuf tag style
+ Filename string // name of the file in which the extension is defined
}
func (ed *ExtensionDesc) repeated() bool {
diff --git a/protoc-gen-go/generator/generator.go b/protoc-gen-go/generator/generator.go
index 5052076..a5879fe 100644
--- a/protoc-gen-go/generator/generator.go
+++ b/protoc-gen-go/generator/generator.go
@@ -2556,6 +2556,7 @@
g.P("Field: ", field.Number, ",")
g.P(`Name: "`, extName, `",`)
g.P("Tag: ", tag, ",")
+ g.P(`Filename: "`, g.file.GetName(), `",`)
g.Out()
g.P("}")
