From fb5a84212c491332504fcdd4b5f4a4b97705d2e3 Mon Sep 17 00:00:00 2001 From: Wim Date: Wed, 16 Jun 2021 21:00:49 +0200 Subject: Update dependencies (#1521) --- .../protobuf/reflect/protodesc/desc.go | 276 +++++++++++++++++++++ 1 file changed, 276 insertions(+) create mode 100644 vendor/google.golang.org/protobuf/reflect/protodesc/desc.go (limited to 'vendor/google.golang.org/protobuf/reflect/protodesc/desc.go') diff --git a/vendor/google.golang.org/protobuf/reflect/protodesc/desc.go b/vendor/google.golang.org/protobuf/reflect/protodesc/desc.go new file mode 100644 index 00000000..e4dfb120 --- /dev/null +++ b/vendor/google.golang.org/protobuf/reflect/protodesc/desc.go @@ -0,0 +1,276 @@ +// Copyright 2018 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// Package protodesc provides functionality for converting +// FileDescriptorProto messages to/from protoreflect.FileDescriptor values. +// +// The google.protobuf.FileDescriptorProto is a protobuf message that describes +// the type information for a .proto file in a form that is easily serializable. +// The protoreflect.FileDescriptor is a more structured representation of +// the FileDescriptorProto message where references and remote dependencies +// can be directly followed. +package protodesc + +import ( + "google.golang.org/protobuf/internal/errors" + "google.golang.org/protobuf/internal/filedesc" + "google.golang.org/protobuf/internal/pragma" + "google.golang.org/protobuf/internal/strs" + "google.golang.org/protobuf/proto" + "google.golang.org/protobuf/reflect/protoreflect" + "google.golang.org/protobuf/reflect/protoregistry" + + "google.golang.org/protobuf/types/descriptorpb" +) + +// Resolver is the resolver used by NewFile to resolve dependencies. +// The enums and messages provided must belong to some parent file, +// which is also registered. +// +// It is implemented by protoregistry.Files. +type Resolver interface { + FindFileByPath(string) (protoreflect.FileDescriptor, error) + FindDescriptorByName(protoreflect.FullName) (protoreflect.Descriptor, error) +} + +// FileOptions configures the construction of file descriptors. +type FileOptions struct { + pragma.NoUnkeyedLiterals + + // AllowUnresolvable configures New to permissively allow unresolvable + // file, enum, or message dependencies. Unresolved dependencies are replaced + // by placeholder equivalents. + // + // The following dependencies may be left unresolved: + // • Resolving an imported file. + // • Resolving the type for a message field or extension field. + // If the kind of the field is unknown, then a placeholder is used for both + // the Enum and Message accessors on the protoreflect.FieldDescriptor. + // • Resolving an enum value set as the default for an optional enum field. + // If unresolvable, the protoreflect.FieldDescriptor.Default is set to the + // first value in the associated enum (or zero if the also enum dependency + // is also unresolvable). The protoreflect.FieldDescriptor.DefaultEnumValue + // is populated with a placeholder. + // • Resolving the extended message type for an extension field. + // • Resolving the input or output message type for a service method. + // + // If the unresolved dependency uses a relative name, + // then the placeholder will contain an invalid FullName with a "*." prefix, + // indicating that the starting prefix of the full name is unknown. + AllowUnresolvable bool +} + +// NewFile creates a new protoreflect.FileDescriptor from the provided +// file descriptor message. See FileOptions.New for more information. +func NewFile(fd *descriptorpb.FileDescriptorProto, r Resolver) (protoreflect.FileDescriptor, error) { + return FileOptions{}.New(fd, r) +} + +// NewFiles creates a new protoregistry.Files from the provided +// FileDescriptorSet message. See FileOptions.NewFiles for more information. +func NewFiles(fd *descriptorpb.FileDescriptorSet) (*protoregistry.Files, error) { + return FileOptions{}.NewFiles(fd) +} + +// New creates a new protoreflect.FileDescriptor from the provided +// file descriptor message. The file must represent a valid proto file according +// to protobuf semantics. The returned descriptor is a deep copy of the input. +// +// Any imported files, enum types, or message types referenced in the file are +// resolved using the provided registry. When looking up an import file path, +// the path must be unique. The newly created file descriptor is not registered +// back into the provided file registry. +func (o FileOptions) New(fd *descriptorpb.FileDescriptorProto, r Resolver) (protoreflect.FileDescriptor, error) { + if r == nil { + r = (*protoregistry.Files)(nil) // empty resolver + } + + // Handle the file descriptor content. + f := &filedesc.File{L2: &filedesc.FileL2{}} + switch fd.GetSyntax() { + case "proto2", "": + f.L1.Syntax = protoreflect.Proto2 + case "proto3": + f.L1.Syntax = protoreflect.Proto3 + default: + return nil, errors.New("invalid syntax: %q", fd.GetSyntax()) + } + f.L1.Path = fd.GetName() + if f.L1.Path == "" { + return nil, errors.New("file path must be populated") + } + f.L1.Package = protoreflect.FullName(fd.GetPackage()) + if !f.L1.Package.IsValid() && f.L1.Package != "" { + return nil, errors.New("invalid package: %q", f.L1.Package) + } + if opts := fd.GetOptions(); opts != nil { + opts = proto.Clone(opts).(*descriptorpb.FileOptions) + f.L2.Options = func() protoreflect.ProtoMessage { return opts } + } + + f.L2.Imports = make(filedesc.FileImports, len(fd.GetDependency())) + for _, i := range fd.GetPublicDependency() { + if !(0 <= i && int(i) < len(f.L2.Imports)) || f.L2.Imports[i].IsPublic { + return nil, errors.New("invalid or duplicate public import index: %d", i) + } + f.L2.Imports[i].IsPublic = true + } + for _, i := range fd.GetWeakDependency() { + if !(0 <= i && int(i) < len(f.L2.Imports)) || f.L2.Imports[i].IsWeak { + return nil, errors.New("invalid or duplicate weak import index: %d", i) + } + f.L2.Imports[i].IsWeak = true + } + imps := importSet{f.Path(): true} + for i, path := range fd.GetDependency() { + imp := &f.L2.Imports[i] + f, err := r.FindFileByPath(path) + if err == protoregistry.NotFound && (o.AllowUnresolvable || imp.IsWeak) { + f = filedesc.PlaceholderFile(path) + } else if err != nil { + return nil, errors.New("could not resolve import %q: %v", path, err) + } + imp.FileDescriptor = f + + if imps[imp.Path()] { + return nil, errors.New("already imported %q", path) + } + imps[imp.Path()] = true + } + for i := range fd.GetDependency() { + imp := &f.L2.Imports[i] + imps.importPublic(imp.Imports()) + } + + // Handle source locations. + f.L2.Locations.File = f + for _, loc := range fd.GetSourceCodeInfo().GetLocation() { + var l protoreflect.SourceLocation + // TODO: Validate that the path points to an actual declaration? + l.Path = protoreflect.SourcePath(loc.GetPath()) + s := loc.GetSpan() + switch len(s) { + case 3: + l.StartLine, l.StartColumn, l.EndLine, l.EndColumn = int(s[0]), int(s[1]), int(s[0]), int(s[2]) + case 4: + l.StartLine, l.StartColumn, l.EndLine, l.EndColumn = int(s[0]), int(s[1]), int(s[2]), int(s[3]) + default: + return nil, errors.New("invalid span: %v", s) + } + // TODO: Validate that the span information is sensible? + // See https://github.com/protocolbuffers/protobuf/issues/6378. + if false && (l.EndLine < l.StartLine || l.StartLine < 0 || l.StartColumn < 0 || l.EndColumn < 0 || + (l.StartLine == l.EndLine && l.EndColumn <= l.StartColumn)) { + return nil, errors.New("invalid span: %v", s) + } + l.LeadingDetachedComments = loc.GetLeadingDetachedComments() + l.LeadingComments = loc.GetLeadingComments() + l.TrailingComments = loc.GetTrailingComments() + f.L2.Locations.List = append(f.L2.Locations.List, l) + } + + // Step 1: Allocate and derive the names for all declarations. + // This copies all fields from the descriptor proto except: + // google.protobuf.FieldDescriptorProto.type_name + // google.protobuf.FieldDescriptorProto.default_value + // google.protobuf.FieldDescriptorProto.oneof_index + // google.protobuf.FieldDescriptorProto.extendee + // google.protobuf.MethodDescriptorProto.input + // google.protobuf.MethodDescriptorProto.output + var err error + sb := new(strs.Builder) + r1 := make(descsByName) + if f.L1.Enums.List, err = r1.initEnumDeclarations(fd.GetEnumType(), f, sb); err != nil { + return nil, err + } + if f.L1.Messages.List, err = r1.initMessagesDeclarations(fd.GetMessageType(), f, sb); err != nil { + return nil, err + } + if f.L1.Extensions.List, err = r1.initExtensionDeclarations(fd.GetExtension(), f, sb); err != nil { + return nil, err + } + if f.L1.Services.List, err = r1.initServiceDeclarations(fd.GetService(), f, sb); err != nil { + return nil, err + } + + // Step 2: Resolve every dependency reference not handled by step 1. + r2 := &resolver{local: r1, remote: r, imports: imps, allowUnresolvable: o.AllowUnresolvable} + if err := r2.resolveMessageDependencies(f.L1.Messages.List, fd.GetMessageType()); err != nil { + return nil, err + } + if err := r2.resolveExtensionDependencies(f.L1.Extensions.List, fd.GetExtension()); err != nil { + return nil, err + } + if err := r2.resolveServiceDependencies(f.L1.Services.List, fd.GetService()); err != nil { + return nil, err + } + + // Step 3: Validate every enum, message, and extension declaration. + if err := validateEnumDeclarations(f.L1.Enums.List, fd.GetEnumType()); err != nil { + return nil, err + } + if err := validateMessageDeclarations(f.L1.Messages.List, fd.GetMessageType()); err != nil { + return nil, err + } + if err := validateExtensionDeclarations(f.L1.Extensions.List, fd.GetExtension()); err != nil { + return nil, err + } + + return f, nil +} + +type importSet map[string]bool + +func (is importSet) importPublic(imps protoreflect.FileImports) { + for i := 0; i < imps.Len(); i++ { + if imp := imps.Get(i); imp.IsPublic { + is[imp.Path()] = true + is.importPublic(imp.Imports()) + } + } +} + +// NewFiles creates a new protoregistry.Files from the provided +// FileDescriptorSet message. The descriptor set must include only +// valid files according to protobuf semantics. The returned descriptors +// are a deep copy of the input. +func (o FileOptions) NewFiles(fds *descriptorpb.FileDescriptorSet) (*protoregistry.Files, error) { + files := make(map[string]*descriptorpb.FileDescriptorProto) + for _, fd := range fds.File { + if _, ok := files[fd.GetName()]; ok { + return nil, errors.New("file appears multiple times: %q", fd.GetName()) + } + files[fd.GetName()] = fd + } + r := &protoregistry.Files{} + for _, fd := range files { + if err := o.addFileDeps(r, fd, files); err != nil { + return nil, err + } + } + return r, nil +} +func (o FileOptions) addFileDeps(r *protoregistry.Files, fd *descriptorpb.FileDescriptorProto, files map[string]*descriptorpb.FileDescriptorProto) error { + // Set the entry to nil while descending into a file's dependencies to detect cycles. + files[fd.GetName()] = nil + for _, dep := range fd.Dependency { + depfd, ok := files[dep] + if depfd == nil { + if ok { + return errors.New("import cycle in file: %q", dep) + } + continue + } + if err := o.addFileDeps(r, depfd, files); err != nil { + return err + } + } + // Delete the entry once dependencies are processed. + delete(files, fd.GetName()) + f, err := o.New(fd, r) + if err != nil { + return err + } + return r.RegisterFile(f) +} -- cgit v1.2.3