75 lines
2.4 KiB
Go
75 lines
2.4 KiB
Go
// Copyright 2023-2025 Buf Technologies, Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package protovalidate
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import (
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"buf.build/gen/go/bufbuild/protovalidate/protocolbuffers/go/buf/validate"
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"google.golang.org/protobuf/proto"
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"google.golang.org/protobuf/reflect/protoreflect"
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)
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//nolint:gochecknoglobals
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var (
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repeatedRuleDescriptor = (&validate.FieldRules{}).ProtoReflect().Descriptor().Fields().ByName("repeated")
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repeatedItemsRuleDescriptor = (&validate.RepeatedRules{}).ProtoReflect().Descriptor().Fields().ByName("items")
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repeatedItemsRulePath = validate.FieldPath_builder{
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Elements: []*validate.FieldPathElement{
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fieldPathElement(repeatedRuleDescriptor),
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fieldPathElement(repeatedItemsRuleDescriptor),
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},
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}.Build()
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)
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// listItems performs validation on the elements of a repeated field.
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type listItems struct {
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base
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// ItemRules are checked on every item of the list
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ItemRules value
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}
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func newListItems(valEval *value) listItems {
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return listItems{
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base: newBase(valEval),
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ItemRules: value{NestedRule: repeatedItemsRulePath},
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}
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}
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func (r listItems) Evaluate(msg protoreflect.Message, val protoreflect.Value, cfg *validationConfig) error {
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list := val.List()
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var ok bool
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var err error
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for i := range list.Len() {
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itemErr := r.ItemRules.EvaluateField(msg, list.Get(i), cfg, true)
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if itemErr != nil {
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updateViolationPaths(itemErr, validate.FieldPathElement_builder{
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FieldNumber: proto.Int32(r.FieldPathElement.GetFieldNumber()),
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FieldType: r.base.FieldPathElement.GetFieldType().Enum(),
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FieldName: proto.String(r.FieldPathElement.GetFieldName()),
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Index: proto.Uint64(uint64(i)), //nolint:gosec // indices are guaranteed to be non-negative
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}.Build(), r.RulePrefix.GetElements())
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}
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if ok, err = mergeViolations(err, itemErr, cfg); !ok {
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return err
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}
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}
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return err
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}
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func (r listItems) Tautology() bool {
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return r.ItemRules.Tautology()
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}
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var _ evaluator = listItems{}
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