/
well_known.go
86 lines (76 loc) · 1.92 KB
/
well_known.go
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package funcs
import (
"google.golang.org/protobuf/compiler/protogen"
"google.golang.org/protobuf/proto"
"google.golang.org/protobuf/reflect/protoreflect"
"github.com/ml444/gkit/cmd/protoc-gen-go-validate/v"
)
type WellKnown string
const (
Email WellKnown = "email"
Hostname WellKnown = "hostname"
UUID WellKnown = "uuid"
)
func FileNeeds(f protogen.File, wk WellKnown) bool {
for _, msg := range f.Messages {
needed := Needs(msg.Desc, wk)
if needed {
return true
}
}
return false
}
// Needs returns true if a well-known string validator is needed for this
// message.
func Needs(m protoreflect.MessageDescriptor, wk WellKnown) bool {
fields := m.Fields()
for i := 0; i < fields.Len(); i++ {
f := fields.Get(i)
//var rules v.FieldRules
rules, ok := proto.GetExtension(f.Options(), v.E_Rules).(*v.FieldRules)
if !ok {
continue
}
switch {
case f.IsList() && f.Kind() == protoreflect.StringKind:
if strRulesNeeds(rules.GetRepeated().GetItems().GetString_(), wk) {
return true
}
case f.IsMap():
if f.MapKey().Kind() == protoreflect.StringKind &&
strRulesNeeds(rules.GetMap().GetKeys().GetString_(), wk) {
return true
}
if f.MapValue().Kind() == protoreflect.StringKind &&
strRulesNeeds(rules.GetMap().GetValues().GetString_(), wk) {
return true
}
case f.Kind() == protoreflect.StringKind:
if strRulesNeeds(rules.GetString_(), wk) {
return true
}
//case f.Desc.Kind() == protoreflect.StringKind && f.Type().IsEmbed() && f.Type().Embed().WellKnownType() == pgs.StringValueWKT:
// if strRulesNeeds(rules.GetString_(), wk) {
// return true
// }
}
}
return false
}
func strRulesNeeds(rules *v.StringRules, wk WellKnown) bool {
switch wk {
case Email:
if rules.GetEmail() {
return true
}
case Hostname:
if rules.GetHostname() || rules.GetAddress() {
return true
}
case UUID:
if rules.GetUuid() {
return true
}
}
return false
}