59 lines
1.9 KiB
Go
59 lines
1.9 KiB
Go
// Copyright 2023-2025 Buf Technologies, Inc.
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
package protovalidate
|
|
|
|
import (
|
|
"buf.build/gen/go/bufbuild/protovalidate/protocolbuffers/go/buf/validate"
|
|
"google.golang.org/protobuf/proto"
|
|
"google.golang.org/protobuf/reflect/protoreflect"
|
|
)
|
|
|
|
// oneof performs validation on a oneof union.
|
|
type oneof struct {
|
|
// Descriptor is the OneofDescriptor targeted by this evaluator
|
|
Descriptor protoreflect.OneofDescriptor
|
|
// Required indicates that a member of the oneof must be set
|
|
Required bool
|
|
}
|
|
|
|
func (o oneof) Evaluate(_ protoreflect.Message, val protoreflect.Value, cfg *validationConfig) error {
|
|
return o.EvaluateMessage(val.Message(), cfg)
|
|
}
|
|
|
|
func (o oneof) EvaluateMessage(msg protoreflect.Message, cfg *validationConfig) error {
|
|
if !cfg.filter.ShouldValidate(msg, o.Descriptor) ||
|
|
!o.Required || msg.WhichOneof(o.Descriptor) != nil {
|
|
return nil
|
|
}
|
|
return &ValidationError{Violations: []*Violation{{
|
|
Proto: validate.Violation_builder{
|
|
Field: validate.FieldPath_builder{
|
|
Elements: []*validate.FieldPathElement{
|
|
validate.FieldPathElement_builder{
|
|
FieldName: proto.String(string(o.Descriptor.Name())),
|
|
}.Build(),
|
|
},
|
|
}.Build(),
|
|
RuleId: proto.String("required"),
|
|
Message: proto.String("exactly one field is required in oneof"),
|
|
}.Build(),
|
|
}}}
|
|
}
|
|
|
|
func (o oneof) Tautology() bool {
|
|
return !o.Required
|
|
}
|
|
|
|
var _ messageEvaluator = oneof{}
|