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// Copyright 2020-2024 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 internal
import (
"google.golang.org/protobuf/types/descriptorpb"
"github.com/bufbuild/protocompile/ast"
)
type hasOptionNode interface {
OptionNode(part *descriptorpb.UninterpretedOption) ast.OptionDeclNode
FileNode() ast.FileDeclNode // needed in order to query for NodeInfo
}
type errorHandler func(span ast.SourceSpan, format string, args ...interface{}) error
func FindFirstOption(res hasOptionNode, handler errorHandler, scope string, opts []*descriptorpb.UninterpretedOption, name string) (int, error) {
return findOption(res, handler, scope, opts, name, false, true)
}
func FindOption(res hasOptionNode, handler errorHandler, scope string, opts []*descriptorpb.UninterpretedOption, name string) (int, error) {
return findOption(res, handler, scope, opts, name, true, false)
}
func findOption(res hasOptionNode, handler errorHandler, scope string, opts []*descriptorpb.UninterpretedOption, name string, exact, first bool) (int, error) {
found := -1
for i, opt := range opts {
if exact && len(opt.Name) != 1 {
continue
}
if opt.Name[0].GetIsExtension() || opt.Name[0].GetNamePart() != name {
continue
}
if first {
return i, nil
}
if found >= 0 {
optNode := res.OptionNode(opt)
fn := res.FileNode()
node := optNode.GetName()
nodeInfo := fn.NodeInfo(node)
return -1, handler(nodeInfo, "%s: option %s cannot be defined more than once", scope, name)
}
found = i
}
return found, nil
}
func RemoveOption(uo []*descriptorpb.UninterpretedOption, indexToRemove int) []*descriptorpb.UninterpretedOption {
switch {
case indexToRemove == 0:
return uo[1:]
case indexToRemove == len(uo)-1:
return uo[:len(uo)-1]
default:
return append(uo[:indexToRemove], uo[indexToRemove+1:]...)
}
}
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