[VOL-4291] Rw-core updates for gRPC migration
Change-Id: I8d5a554409115b29318089671ca4e1ab3fa98810
diff --git a/vendor/google.golang.org/protobuf/internal/descfmt/stringer.go b/vendor/google.golang.org/protobuf/internal/descfmt/stringer.go
new file mode 100644
index 0000000..360c633
--- /dev/null
+++ b/vendor/google.golang.org/protobuf/internal/descfmt/stringer.go
@@ -0,0 +1,318 @@
+// Copyright 2018 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.
+
+// Package descfmt provides functionality to format descriptors.
+package descfmt
+
+import (
+ "fmt"
+ "io"
+ "reflect"
+ "strconv"
+ "strings"
+
+ "google.golang.org/protobuf/internal/detrand"
+ "google.golang.org/protobuf/internal/pragma"
+ pref "google.golang.org/protobuf/reflect/protoreflect"
+)
+
+type list interface {
+ Len() int
+ pragma.DoNotImplement
+}
+
+func FormatList(s fmt.State, r rune, vs list) {
+ io.WriteString(s, formatListOpt(vs, true, r == 'v' && (s.Flag('+') || s.Flag('#'))))
+}
+func formatListOpt(vs list, isRoot, allowMulti bool) string {
+ start, end := "[", "]"
+ if isRoot {
+ var name string
+ switch vs.(type) {
+ case pref.Names:
+ name = "Names"
+ case pref.FieldNumbers:
+ name = "FieldNumbers"
+ case pref.FieldRanges:
+ name = "FieldRanges"
+ case pref.EnumRanges:
+ name = "EnumRanges"
+ case pref.FileImports:
+ name = "FileImports"
+ case pref.Descriptor:
+ name = reflect.ValueOf(vs).MethodByName("Get").Type().Out(0).Name() + "s"
+ default:
+ name = reflect.ValueOf(vs).Elem().Type().Name()
+ }
+ start, end = name+"{", "}"
+ }
+
+ var ss []string
+ switch vs := vs.(type) {
+ case pref.Names:
+ for i := 0; i < vs.Len(); i++ {
+ ss = append(ss, fmt.Sprint(vs.Get(i)))
+ }
+ return start + joinStrings(ss, false) + end
+ case pref.FieldNumbers:
+ for i := 0; i < vs.Len(); i++ {
+ ss = append(ss, fmt.Sprint(vs.Get(i)))
+ }
+ return start + joinStrings(ss, false) + end
+ case pref.FieldRanges:
+ for i := 0; i < vs.Len(); i++ {
+ r := vs.Get(i)
+ if r[0]+1 == r[1] {
+ ss = append(ss, fmt.Sprintf("%d", r[0]))
+ } else {
+ ss = append(ss, fmt.Sprintf("%d:%d", r[0], r[1])) // enum ranges are end exclusive
+ }
+ }
+ return start + joinStrings(ss, false) + end
+ case pref.EnumRanges:
+ for i := 0; i < vs.Len(); i++ {
+ r := vs.Get(i)
+ if r[0] == r[1] {
+ ss = append(ss, fmt.Sprintf("%d", r[0]))
+ } else {
+ ss = append(ss, fmt.Sprintf("%d:%d", r[0], int64(r[1])+1)) // enum ranges are end inclusive
+ }
+ }
+ return start + joinStrings(ss, false) + end
+ case pref.FileImports:
+ for i := 0; i < vs.Len(); i++ {
+ var rs records
+ rs.Append(reflect.ValueOf(vs.Get(i)), "Path", "Package", "IsPublic", "IsWeak")
+ ss = append(ss, "{"+rs.Join()+"}")
+ }
+ return start + joinStrings(ss, allowMulti) + end
+ default:
+ _, isEnumValue := vs.(pref.EnumValueDescriptors)
+ for i := 0; i < vs.Len(); i++ {
+ m := reflect.ValueOf(vs).MethodByName("Get")
+ v := m.Call([]reflect.Value{reflect.ValueOf(i)})[0].Interface()
+ ss = append(ss, formatDescOpt(v.(pref.Descriptor), false, allowMulti && !isEnumValue))
+ }
+ return start + joinStrings(ss, allowMulti && isEnumValue) + end
+ }
+}
+
+// descriptorAccessors is a list of accessors to print for each descriptor.
+//
+// Do not print all accessors since some contain redundant information,
+// while others are pointers that we do not want to follow since the descriptor
+// is actually a cyclic graph.
+//
+// Using a list allows us to print the accessors in a sensible order.
+var descriptorAccessors = map[reflect.Type][]string{
+ reflect.TypeOf((*pref.FileDescriptor)(nil)).Elem(): {"Path", "Package", "Imports", "Messages", "Enums", "Extensions", "Services"},
+ reflect.TypeOf((*pref.MessageDescriptor)(nil)).Elem(): {"IsMapEntry", "Fields", "Oneofs", "ReservedNames", "ReservedRanges", "RequiredNumbers", "ExtensionRanges", "Messages", "Enums", "Extensions"},
+ reflect.TypeOf((*pref.FieldDescriptor)(nil)).Elem(): {"Number", "Cardinality", "Kind", "HasJSONName", "JSONName", "HasPresence", "IsExtension", "IsPacked", "IsWeak", "IsList", "IsMap", "MapKey", "MapValue", "HasDefault", "Default", "ContainingOneof", "ContainingMessage", "Message", "Enum"},
+ reflect.TypeOf((*pref.OneofDescriptor)(nil)).Elem(): {"Fields"}, // not directly used; must keep in sync with formatDescOpt
+ reflect.TypeOf((*pref.EnumDescriptor)(nil)).Elem(): {"Values", "ReservedNames", "ReservedRanges"},
+ reflect.TypeOf((*pref.EnumValueDescriptor)(nil)).Elem(): {"Number"},
+ reflect.TypeOf((*pref.ServiceDescriptor)(nil)).Elem(): {"Methods"},
+ reflect.TypeOf((*pref.MethodDescriptor)(nil)).Elem(): {"Input", "Output", "IsStreamingClient", "IsStreamingServer"},
+}
+
+func FormatDesc(s fmt.State, r rune, t pref.Descriptor) {
+ io.WriteString(s, formatDescOpt(t, true, r == 'v' && (s.Flag('+') || s.Flag('#'))))
+}
+func formatDescOpt(t pref.Descriptor, isRoot, allowMulti bool) string {
+ rv := reflect.ValueOf(t)
+ rt := rv.MethodByName("ProtoType").Type().In(0)
+
+ start, end := "{", "}"
+ if isRoot {
+ start = rt.Name() + "{"
+ }
+
+ _, isFile := t.(pref.FileDescriptor)
+ rs := records{allowMulti: allowMulti}
+ if t.IsPlaceholder() {
+ if isFile {
+ rs.Append(rv, "Path", "Package", "IsPlaceholder")
+ } else {
+ rs.Append(rv, "FullName", "IsPlaceholder")
+ }
+ } else {
+ switch {
+ case isFile:
+ rs.Append(rv, "Syntax")
+ case isRoot:
+ rs.Append(rv, "Syntax", "FullName")
+ default:
+ rs.Append(rv, "Name")
+ }
+ switch t := t.(type) {
+ case pref.FieldDescriptor:
+ for _, s := range descriptorAccessors[rt] {
+ switch s {
+ case "MapKey":
+ if k := t.MapKey(); k != nil {
+ rs.recs = append(rs.recs, [2]string{"MapKey", k.Kind().String()})
+ }
+ case "MapValue":
+ if v := t.MapValue(); v != nil {
+ switch v.Kind() {
+ case pref.EnumKind:
+ rs.recs = append(rs.recs, [2]string{"MapValue", string(v.Enum().FullName())})
+ case pref.MessageKind, pref.GroupKind:
+ rs.recs = append(rs.recs, [2]string{"MapValue", string(v.Message().FullName())})
+ default:
+ rs.recs = append(rs.recs, [2]string{"MapValue", v.Kind().String()})
+ }
+ }
+ case "ContainingOneof":
+ if od := t.ContainingOneof(); od != nil {
+ rs.recs = append(rs.recs, [2]string{"Oneof", string(od.Name())})
+ }
+ case "ContainingMessage":
+ if t.IsExtension() {
+ rs.recs = append(rs.recs, [2]string{"Extendee", string(t.ContainingMessage().FullName())})
+ }
+ case "Message":
+ if !t.IsMap() {
+ rs.Append(rv, s)
+ }
+ default:
+ rs.Append(rv, s)
+ }
+ }
+ case pref.OneofDescriptor:
+ var ss []string
+ fs := t.Fields()
+ for i := 0; i < fs.Len(); i++ {
+ ss = append(ss, string(fs.Get(i).Name()))
+ }
+ if len(ss) > 0 {
+ rs.recs = append(rs.recs, [2]string{"Fields", "[" + joinStrings(ss, false) + "]"})
+ }
+ default:
+ rs.Append(rv, descriptorAccessors[rt]...)
+ }
+ if rv.MethodByName("GoType").IsValid() {
+ rs.Append(rv, "GoType")
+ }
+ }
+ return start + rs.Join() + end
+}
+
+type records struct {
+ recs [][2]string
+ allowMulti bool
+}
+
+func (rs *records) Append(v reflect.Value, accessors ...string) {
+ for _, a := range accessors {
+ var rv reflect.Value
+ if m := v.MethodByName(a); m.IsValid() {
+ rv = m.Call(nil)[0]
+ }
+ if v.Kind() == reflect.Struct && !rv.IsValid() {
+ rv = v.FieldByName(a)
+ }
+ if !rv.IsValid() {
+ panic(fmt.Sprintf("unknown accessor: %v.%s", v.Type(), a))
+ }
+ if _, ok := rv.Interface().(pref.Value); ok {
+ rv = rv.MethodByName("Interface").Call(nil)[0]
+ if !rv.IsNil() {
+ rv = rv.Elem()
+ }
+ }
+
+ // Ignore zero values.
+ var isZero bool
+ switch rv.Kind() {
+ case reflect.Interface, reflect.Slice:
+ isZero = rv.IsNil()
+ case reflect.Bool:
+ isZero = rv.Bool() == false
+ case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
+ isZero = rv.Int() == 0
+ case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
+ isZero = rv.Uint() == 0
+ case reflect.String:
+ isZero = rv.String() == ""
+ }
+ if n, ok := rv.Interface().(list); ok {
+ isZero = n.Len() == 0
+ }
+ if isZero {
+ continue
+ }
+
+ // Format the value.
+ var s string
+ v := rv.Interface()
+ switch v := v.(type) {
+ case list:
+ s = formatListOpt(v, false, rs.allowMulti)
+ case pref.FieldDescriptor, pref.OneofDescriptor, pref.EnumValueDescriptor, pref.MethodDescriptor:
+ s = string(v.(pref.Descriptor).Name())
+ case pref.Descriptor:
+ s = string(v.FullName())
+ case string:
+ s = strconv.Quote(v)
+ case []byte:
+ s = fmt.Sprintf("%q", v)
+ default:
+ s = fmt.Sprint(v)
+ }
+ rs.recs = append(rs.recs, [2]string{a, s})
+ }
+}
+
+func (rs *records) Join() string {
+ var ss []string
+
+ // In single line mode, simply join all records with commas.
+ if !rs.allowMulti {
+ for _, r := range rs.recs {
+ ss = append(ss, r[0]+formatColon(0)+r[1])
+ }
+ return joinStrings(ss, false)
+ }
+
+ // In allowMulti line mode, align single line records for more readable output.
+ var maxLen int
+ flush := func(i int) {
+ for _, r := range rs.recs[len(ss):i] {
+ ss = append(ss, r[0]+formatColon(maxLen-len(r[0]))+r[1])
+ }
+ maxLen = 0
+ }
+ for i, r := range rs.recs {
+ if isMulti := strings.Contains(r[1], "\n"); isMulti {
+ flush(i)
+ ss = append(ss, r[0]+formatColon(0)+strings.Join(strings.Split(r[1], "\n"), "\n\t"))
+ } else if maxLen < len(r[0]) {
+ maxLen = len(r[0])
+ }
+ }
+ flush(len(rs.recs))
+ return joinStrings(ss, true)
+}
+
+func formatColon(padding int) string {
+ // Deliberately introduce instability into the debug output to
+ // discourage users from performing string comparisons.
+ // This provides us flexibility to change the output in the future.
+ if detrand.Bool() {
+ return ":" + strings.Repeat(" ", 1+padding) // use non-breaking spaces (U+00a0)
+ } else {
+ return ":" + strings.Repeat(" ", 1+padding) // use regular spaces (U+0020)
+ }
+}
+
+func joinStrings(ss []string, isMulti bool) string {
+ if len(ss) == 0 {
+ return ""
+ }
+ if isMulti {
+ return "\n\t" + strings.Join(ss, "\n\t") + "\n"
+ }
+ return strings.Join(ss, ", ")
+}