mirror of https://github.com/status-im/consul.git
55 lines
1.2 KiB
Go
55 lines
1.2 KiB
Go
// Copyright (c) HashiCorp, Inc.
|
|
// SPDX-License-Identifier: BUSL-1.1
|
|
|
|
package protohcl
|
|
|
|
import (
|
|
"fmt"
|
|
"strings"
|
|
|
|
"google.golang.org/protobuf/reflect/protoreflect"
|
|
)
|
|
|
|
type oneOfTracker struct {
|
|
namer FieldNamer
|
|
set map[protoreflect.FullName]string
|
|
}
|
|
|
|
func newOneOfTracker(namer FieldNamer) *oneOfTracker {
|
|
return &oneOfTracker{
|
|
namer: namer,
|
|
set: make(map[protoreflect.FullName]string),
|
|
}
|
|
}
|
|
|
|
func (o *oneOfTracker) markFieldAsSet(desc protoreflect.FieldDescriptor) error {
|
|
oneof := desc.ContainingOneof()
|
|
if oneof == nil {
|
|
return nil
|
|
}
|
|
|
|
oneOfName := oneof.FullName()
|
|
|
|
if otherFieldName, ok := o.set[oneOfName]; ok {
|
|
oneOfFields := oneof.Fields()
|
|
var builder strings.Builder
|
|
|
|
for i := 0; i < oneOfFields.Len(); i++ {
|
|
name := o.namer.NameField(oneOfFields.Get(i))
|
|
|
|
if i == oneOfFields.Len()-1 {
|
|
builder.WriteString(fmt.Sprintf("%q", name))
|
|
} else if i == oneOfFields.Len()-2 {
|
|
builder.WriteString(fmt.Sprintf("%q and ", name))
|
|
} else {
|
|
builder.WriteString(fmt.Sprintf("%q, ", name))
|
|
}
|
|
}
|
|
|
|
return fmt.Errorf("Cannot set %q because %q was previously set. Only one of %s may be set.", o.namer.NameField(desc), otherFieldName, builder.String())
|
|
}
|
|
|
|
o.set[oneOfName] = o.namer.NameField(desc)
|
|
return nil
|
|
}
|