Function newFile

private/bufpkg/bufprotosource/file.go:230–357

does not validation of the fileDescriptorProto - this is assumed to be done elsewhere does no duplicate checking by name - could just have maps ie importToFileImport, enumNameToEnum, etc

(inputFile InputFile, resolver protodesc.Resolver)

// does not validation of the fileDescriptorProto - this is assumed to be done elsewhere
// does no duplicate checking by name - could just have maps ie importToFileImport, enumNameToEnum, etc
func newFile(inputFile InputFile, resolver protodesc.Resolver) (*file, error) {
	locationStore := newLocationStore(inputFile.FileDescriptorProto())
	f := &file{
		FileInfo:       inputFile,
		resolver:       resolver,
		fileDescriptor: inputFile.FileDescriptorProto(),
		optionExtensionDescriptor: newOptionExtensionDescriptor(
			inputFile.FileDescriptorProto().GetOptions(),
			[]int32{8},
			locationStore,
			50,
		),
		edition: inputFile.FileDescriptorProto().GetEdition(),
	}
	descriptor := newDescriptor(
		f,
		locationStore,
	)
	f.descriptor = descriptor

	if inputFile.IsSyntaxUnspecified() {
		// if the syntax is "proto2", protoc and buf will not set the syntax
		// field even if it was explicitly set, this is why we have
		// IsSyntaxUnspecified
		f.syntax = SyntaxUnspecified
	} else {
		switch syntaxString := f.fileDescriptor.GetSyntax(); syntaxString {
		case "", "proto2":
			f.syntax = SyntaxProto2
		case "proto3":
			f.syntax = SyntaxProto3
		case "editions":
			f.syntax = SyntaxEditions
		default:
			return nil, fmt.Errorf("unknown syntax: %q", syntaxString)
		}
	}

	for dependencyIndex, dependency := range f.fileDescriptor.GetDependency() {
		fileImport, err := newFileImport(
			f.descriptor,
			dependency,
			getDependencyPath(dependencyIndex),
		)
		if err != nil {
			return nil, err
		}
		f.fileImports = append(f.fileImports, fileImport)
	}
	for _, dependencyIndex := range f.fileDescriptor.GetPublicDependency() {
		if int(dependencyIndex) < 0 || len(f.fileImports) <= int(dependencyIndex) {
			return nil, fmt.Errorf("got dependency index of %d but length of imports is %d", dependencyIndex, len(f.fileImports))
		}
		fileImport, ok := f.fileImports[dependencyIndex].(*fileImport)
		if !ok {
			return nil, fmt.Errorf("could not cast %T to a *fileImport", f.fileImports[dependencyIndex])
		}
		fileImport.setIsPublic()