702 lines
21 KiB
Go
702 lines
21 KiB
Go
// Copyright 2020-2021 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 protosource
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import (
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"fmt"
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"google.golang.org/protobuf/types/descriptorpb"
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)
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type file struct {
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FileInfo
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descriptor
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fileDescriptorProto *descriptorpb.FileDescriptorProto
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syntax Syntax
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fileImports []FileImport
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messages []Message
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enums []Enum
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services []Service
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optimizeMode FileOptionsOptimizeMode
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}
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func (f *file) Syntax() Syntax {
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return f.syntax
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}
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func (f *file) Package() string {
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return f.fileDescriptorProto.GetPackage()
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}
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func (f *file) FileImports() []FileImport {
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return f.fileImports
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}
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func (f *file) Messages() []Message {
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return f.messages
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}
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func (f *file) Enums() []Enum {
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return f.enums
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}
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func (f *file) Services() []Service {
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return f.services
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}
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func (f *file) CsharpNamespace() string {
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return f.fileDescriptorProto.GetOptions().GetCsharpNamespace()
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}
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func (f *file) GoPackage() string {
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return f.fileDescriptorProto.GetOptions().GetGoPackage()
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}
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func (f *file) JavaMultipleFiles() bool {
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return f.fileDescriptorProto.GetOptions().GetJavaMultipleFiles()
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}
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func (f *file) JavaOuterClassname() string {
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return f.fileDescriptorProto.GetOptions().GetJavaOuterClassname()
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}
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func (f *file) JavaPackage() string {
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return f.fileDescriptorProto.GetOptions().GetJavaPackage()
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}
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func (f *file) JavaStringCheckUtf8() bool {
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return f.fileDescriptorProto.GetOptions().GetJavaStringCheckUtf8()
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}
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func (f *file) ObjcClassPrefix() string {
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return f.fileDescriptorProto.GetOptions().GetObjcClassPrefix()
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}
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func (f *file) PhpClassPrefix() string {
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return f.fileDescriptorProto.GetOptions().GetPhpClassPrefix()
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}
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func (f *file) PhpNamespace() string {
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return f.fileDescriptorProto.GetOptions().GetPhpNamespace()
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}
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func (f *file) PhpMetadataNamespace() string {
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return f.fileDescriptorProto.GetOptions().GetPhpMetadataNamespace()
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}
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func (f *file) RubyPackage() string {
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return f.fileDescriptorProto.GetOptions().GetRubyPackage()
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}
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func (f *file) SwiftPrefix() string {
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return f.fileDescriptorProto.GetOptions().GetSwiftPrefix()
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}
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func (f *file) OptimizeFor() FileOptionsOptimizeMode {
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return f.optimizeMode
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}
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func (f *file) CcGenericServices() bool {
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return f.fileDescriptorProto.GetOptions().GetCcGenericServices()
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}
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func (f *file) JavaGenericServices() bool {
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return f.fileDescriptorProto.GetOptions().GetJavaGenericServices()
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}
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func (f *file) PyGenericServices() bool {
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return f.fileDescriptorProto.GetOptions().GetPyGenericServices()
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}
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func (f *file) PhpGenericServices() bool {
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return f.fileDescriptorProto.GetOptions().GetPhpGenericServices()
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}
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func (f *file) CcEnableArenas() bool {
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return f.fileDescriptorProto.GetOptions().GetCcEnableArenas()
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}
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func (f *file) PackageLocation() Location {
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return f.getLocationByPathKey(packagePathKey)
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}
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func (f *file) CsharpNamespaceLocation() Location {
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return f.getLocationByPathKey(csharpNamespacePathKey)
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}
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func (f *file) GoPackageLocation() Location {
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return f.getLocationByPathKey(goPackagePathKey)
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}
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func (f *file) JavaMultipleFilesLocation() Location {
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return f.getLocationByPathKey(javaMultipleFilesPathKey)
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}
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func (f *file) JavaOuterClassnameLocation() Location {
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return f.getLocationByPathKey(javaOuterClassnamePathKey)
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}
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func (f *file) JavaPackageLocation() Location {
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return f.getLocationByPathKey(javaPackagePathKey)
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}
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func (f *file) JavaStringCheckUtf8Location() Location {
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return f.getLocationByPathKey(javaStringCheckUtf8PathKey)
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}
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func (f *file) ObjcClassPrefixLocation() Location {
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return f.getLocationByPathKey(objcClassPrefixPathKey)
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}
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func (f *file) PhpClassPrefixLocation() Location {
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return f.getLocationByPathKey(phpClassPrefixPathKey)
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}
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func (f *file) PhpNamespaceLocation() Location {
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return f.getLocationByPathKey(phpNamespacePathKey)
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}
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func (f *file) PhpMetadataNamespaceLocation() Location {
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return f.getLocationByPathKey(phpMetadataNamespacePathKey)
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}
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func (f *file) RubyPackageLocation() Location {
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return f.getLocationByPathKey(rubyPackagePathKey)
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}
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func (f *file) SwiftPrefixLocation() Location {
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return f.getLocationByPathKey(swiftPrefixPathKey)
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}
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func (f *file) OptimizeForLocation() Location {
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return f.getLocationByPathKey(optimizeForPathKey)
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}
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func (f *file) CcGenericServicesLocation() Location {
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return f.getLocationByPathKey(ccGenericServicesPathKey)
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}
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func (f *file) JavaGenericServicesLocation() Location {
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return f.getLocationByPathKey(javaGenericServicesPathKey)
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}
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func (f *file) PyGenericServicesLocation() Location {
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return f.getLocationByPathKey(pyGenericServicesPathKey)
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}
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func (f *file) PhpGenericServicesLocation() Location {
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return f.getLocationByPathKey(phpGenericServicesPathKey)
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}
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func (f *file) CcEnableArenasLocation() Location {
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return f.getLocationByPathKey(ccEnableArenasPathKey)
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}
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func (f *file) SyntaxLocation() Location {
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return f.getLocationByPathKey(syntaxPathKey)
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}
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// does not validation of the fileDescriptorProto - this is assumed to be done elsewhere
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// does no duplicate checking by name - could just have maps ie importToFileImport, enumNameToEnum, etc
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func newFile(inputFile InputFile) (*file, error) {
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f := &file{
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FileInfo: inputFile,
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fileDescriptorProto: inputFile.Proto(),
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}
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descriptor := newDescriptor(
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f,
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newLocationStore(f.fileDescriptorProto.GetSourceCodeInfo().GetLocation()),
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)
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f.descriptor = descriptor
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syntaxString := f.fileDescriptorProto.GetSyntax()
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if syntaxString == "" || syntaxString == "proto2" {
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f.syntax = SyntaxProto2
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} else if syntaxString == "proto3" {
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f.syntax = SyntaxProto3
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} else {
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return nil, fmt.Errorf("unknown syntax: %q", syntaxString)
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}
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for dependencyIndex, dependency := range f.fileDescriptorProto.GetDependency() {
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fileImport, err := newFileImport(
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f.descriptor,
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dependency,
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getDependencyPath(dependencyIndex),
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)
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if err != nil {
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return nil, err
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}
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f.fileImports = append(f.fileImports, fileImport)
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}
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for _, dependencyIndex := range f.fileDescriptorProto.GetPublicDependency() {
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if len(f.fileImports) <= int(dependencyIndex) {
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return nil, fmt.Errorf("got dependency index of %d but length of imports is %d", dependencyIndex, len(f.fileImports))
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}
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fileImport, ok := f.fileImports[dependencyIndex].(*fileImport)
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if !ok {
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return nil, fmt.Errorf("could not cast %T to a *fileImport", f.fileImports[dependencyIndex])
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}
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fileImport.setIsPublic()
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}
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for _, dependencyIndex := range f.fileDescriptorProto.GetWeakDependency() {
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if len(f.fileImports) <= int(dependencyIndex) {
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return nil, fmt.Errorf("got dependency index of %d but length of imports is %d", dependencyIndex, len(f.fileImports))
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}
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fileImport, ok := f.fileImports[dependencyIndex].(*fileImport)
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if !ok {
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return nil, fmt.Errorf("could not cast %T to a *fileImport", f.fileImports[dependencyIndex])
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}
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fileImport.setIsWeak()
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}
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for enumIndex, enumDescriptorProto := range f.fileDescriptorProto.GetEnumType() {
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enum, err := f.populateEnum(
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enumDescriptorProto,
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enumIndex,
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nil,
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nil,
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)
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if err != nil {
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return nil, err
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}
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f.enums = append(f.enums, enum)
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}
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for messageIndex, descriptorProto := range f.fileDescriptorProto.GetMessageType() {
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message, err := f.populateMessage(
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descriptorProto,
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messageIndex,
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nil,
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nil,
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nil,
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)
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if err != nil {
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return nil, err
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}
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f.messages = append(f.messages, message)
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}
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for serviceIndex, serviceDescriptorProto := range f.fileDescriptorProto.GetService() {
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service, err := f.populateService(
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serviceDescriptorProto,
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serviceIndex,
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)
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if err != nil {
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return nil, err
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}
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f.services = append(f.services, service)
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}
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optimizeMode, err := getFileOptionsOptimizeMode(f.fileDescriptorProto.GetOptions().GetOptimizeFor())
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if err != nil {
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return nil, err
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}
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f.optimizeMode = optimizeMode
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return f, nil
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}
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func (f *file) populateEnum(
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enumDescriptorProto *descriptorpb.EnumDescriptorProto,
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enumIndex int,
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// all message indexes leading to this enum
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nestedMessageIndexes []int,
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// all message names leading to this enum
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nestedMessageNames []string,
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) (Enum, error) {
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enumNamedDescriptor, err := newNamedDescriptor(
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newLocationDescriptor(
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f.descriptor,
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getEnumPath(enumIndex, nestedMessageIndexes...),
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),
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enumDescriptorProto.GetName(),
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getEnumNamePath(enumIndex, nestedMessageIndexes...),
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nestedMessageNames,
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)
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if err != nil {
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return nil, err
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}
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enum := newEnum(
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enumNamedDescriptor,
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enumDescriptorProto.GetOptions().GetAllowAlias(),
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getEnumAllowAliasPath(enumIndex, nestedMessageIndexes...),
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)
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for enumValueIndex, enumValueDescriptorProto := range enumDescriptorProto.GetValue() {
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enumValueNamedDescriptor, err := newNamedDescriptor(
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newLocationDescriptor(
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f.descriptor,
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getEnumValuePath(enumIndex, enumValueIndex, nestedMessageIndexes...),
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),
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enumValueDescriptorProto.GetName(),
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getEnumValueNamePath(enumIndex, enumValueIndex, nestedMessageIndexes...),
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append(nestedMessageNames, enum.Name()),
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)
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if err != nil {
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return nil, err
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}
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enumValue := newEnumValue(
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enumValueNamedDescriptor,
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enum,
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int(enumValueDescriptorProto.GetNumber()),
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getEnumValueNumberPath(enumIndex, enumValueIndex, nestedMessageIndexes...),
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)
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enum.addValue(enumValue)
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}
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for reservedRangeIndex, reservedRangeDescriptorProto := range enumDescriptorProto.GetReservedRange() {
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reservedRangeLocationDescriptor := newLocationDescriptor(
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f.descriptor,
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getEnumReservedRangePath(enumIndex, reservedRangeIndex, nestedMessageIndexes...),
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)
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reservedEnumRange := newEnumRange(
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reservedRangeLocationDescriptor,
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enum,
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int(reservedRangeDescriptorProto.GetStart()),
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int(reservedRangeDescriptorProto.GetEnd()),
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)
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enum.addReservedEnumRange(reservedEnumRange)
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}
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for reservedNameIndex, reservedNameValue := range enumDescriptorProto.GetReservedName() {
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reservedNameLocationDescriptor := newLocationDescriptor(
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f.descriptor,
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getEnumReservedNamePath(enumIndex, reservedNameIndex, nestedMessageIndexes...),
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)
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reservedName, err := newReservedName(
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reservedNameLocationDescriptor,
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reservedNameValue,
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)
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if err != nil {
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return nil, err
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}
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enum.addReservedName(reservedName)
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}
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return enum, nil
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}
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func (f *file) populateMessage(
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descriptorProto *descriptorpb.DescriptorProto,
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// always stays the same on every recursive call
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topLevelMessageIndex int,
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// includes descriptorProto index
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nestedMessageIndexes []int,
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// does NOT include descriptorProto.GetName()
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nestedMessageNames []string,
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parent Message,
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) (Message, error) {
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messageNamedDescriptor, err := newNamedDescriptor(
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newLocationDescriptor(
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f.descriptor,
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getMessagePath(topLevelMessageIndex, nestedMessageIndexes...),
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),
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descriptorProto.GetName(),
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getMessageNamePath(topLevelMessageIndex, nestedMessageIndexes...),
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nestedMessageNames,
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)
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if err != nil {
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return nil, err
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}
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message := newMessage(
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messageNamedDescriptor,
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parent,
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descriptorProto.GetOptions().GetMapEntry(),
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descriptorProto.GetOptions().GetMessageSetWireFormat(),
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descriptorProto.GetOptions().GetNoStandardDescriptorAccessor(),
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getMessageMessageSetWireFormatPath(topLevelMessageIndex, nestedMessageIndexes...),
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getMessageNoStandardDescriptorAccessorPath(topLevelMessageIndex, nestedMessageIndexes...),
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)
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oneofIndexToOneof := make(map[int]*oneof)
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for oneofIndex, oneofDescriptorProto := range descriptorProto.GetOneofDecl() {
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oneofNamedDescriptor, err := newNamedDescriptor(
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newLocationDescriptor(
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f.descriptor,
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getMessageOneofPath(oneofIndex, topLevelMessageIndex, nestedMessageIndexes...),
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),
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oneofDescriptorProto.GetName(),
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getMessageOneofNamePath(oneofIndex, topLevelMessageIndex, nestedMessageIndexes...),
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append(nestedMessageNames, message.Name()),
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)
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if err != nil {
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return nil, err
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}
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oneof := newOneof(
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oneofNamedDescriptor,
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message,
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)
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message.addOneof(oneof)
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oneofIndexToOneof[oneofIndex] = oneof
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}
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for fieldIndex, fieldDescriptorProto := range descriptorProto.GetField() {
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// TODO: not working for map entries
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fieldNamedDescriptor, err := newNamedDescriptor(
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newLocationDescriptor(
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f.descriptor,
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getMessageFieldPath(fieldIndex, topLevelMessageIndex, nestedMessageIndexes...),
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),
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fieldDescriptorProto.GetName(),
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getMessageFieldNamePath(fieldIndex, topLevelMessageIndex, nestedMessageIndexes...),
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append(nestedMessageNames, message.Name()),
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)
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if err != nil {
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return nil, err
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}
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var packed *bool
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if fieldDescriptorProto.Options != nil {
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packed = fieldDescriptorProto.GetOptions().Packed
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}
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label, err := getFieldDescriptorProtoLabel(fieldDescriptorProto.GetLabel())
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if err != nil {
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return nil, err
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}
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typ, err := getFieldDescriptorProtoType(fieldDescriptorProto.GetType())
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if err != nil {
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return nil, err
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}
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jsType, err := getFieldOptionsJSType(fieldDescriptorProto.GetOptions().GetJstype())
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if err != nil {
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return nil, err
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}
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cType, err := getFieldOptionsCType(fieldDescriptorProto.GetOptions().GetCtype())
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if err != nil {
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return nil, err
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}
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var oneof *oneof
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var ok bool
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if fieldDescriptorProto.OneofIndex != nil {
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oneofIndex := int(*fieldDescriptorProto.OneofIndex)
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oneof, ok = oneofIndexToOneof[oneofIndex]
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if !ok {
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return nil, fmt.Errorf("no oneof for index %d", oneofIndex)
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}
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}
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field := newField(
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fieldNamedDescriptor,
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message,
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int(fieldDescriptorProto.GetNumber()),
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label,
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typ,
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fieldDescriptorProto.GetTypeName(),
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oneof,
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fieldDescriptorProto.GetProto3Optional(),
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fieldDescriptorProto.GetJsonName(),
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jsType,
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cType,
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packed,
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getMessageFieldNumberPath(fieldIndex, topLevelMessageIndex, nestedMessageIndexes...),
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getMessageFieldTypePath(fieldIndex, topLevelMessageIndex, nestedMessageIndexes...),
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getMessageFieldTypeNamePath(fieldIndex, topLevelMessageIndex, nestedMessageIndexes...),
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getMessageFieldJSONNamePath(fieldIndex, topLevelMessageIndex, nestedMessageIndexes...),
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getMessageFieldJSTypePath(fieldIndex, topLevelMessageIndex, nestedMessageIndexes...),
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getMessageFieldCTypePath(fieldIndex, topLevelMessageIndex, nestedMessageIndexes...),
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getMessageFieldPackedPath(fieldIndex, topLevelMessageIndex, nestedMessageIndexes...),
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)
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message.addField(field)
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if oneof != nil {
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oneof.addField(field)
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}
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}
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// TODO: is this right?
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for fieldIndex, fieldDescriptorProto := range descriptorProto.GetExtension() {
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fieldNamedDescriptor, err := newNamedDescriptor(
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newLocationDescriptor(
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f.descriptor,
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getMessageExtensionPath(fieldIndex, topLevelMessageIndex, nestedMessageIndexes...),
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),
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fieldDescriptorProto.GetName(),
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getMessageExtensionNamePath(fieldIndex, topLevelMessageIndex, nestedMessageIndexes...),
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append(nestedMessageNames, message.Name()),
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)
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if err != nil {
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return nil, err
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}
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var packed *bool
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if fieldDescriptorProto.Options != nil {
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packed = fieldDescriptorProto.GetOptions().Packed
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}
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label, err := getFieldDescriptorProtoLabel(fieldDescriptorProto.GetLabel())
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if err != nil {
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return nil, err
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}
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typ, err := getFieldDescriptorProtoType(fieldDescriptorProto.GetType())
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if err != nil {
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return nil, err
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}
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jsType, err := getFieldOptionsJSType(fieldDescriptorProto.GetOptions().GetJstype())
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if err != nil {
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return nil, err
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}
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cType, err := getFieldOptionsCType(fieldDescriptorProto.GetOptions().GetCtype())
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if err != nil {
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return nil, err
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}
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var oneof *oneof
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var ok bool
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if fieldDescriptorProto.OneofIndex != nil {
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oneofIndex := int(*fieldDescriptorProto.OneofIndex)
|
|
oneof, ok = oneofIndexToOneof[oneofIndex]
|
|
if !ok {
|
|
return nil, fmt.Errorf("no oneof for index %d", oneofIndex)
|
|
}
|
|
}
|
|
field := newField(
|
|
fieldNamedDescriptor,
|
|
message,
|
|
int(fieldDescriptorProto.GetNumber()),
|
|
label,
|
|
typ,
|
|
fieldDescriptorProto.GetTypeName(),
|
|
oneof,
|
|
fieldDescriptorProto.GetProto3Optional(),
|
|
fieldDescriptorProto.GetJsonName(),
|
|
jsType,
|
|
cType,
|
|
packed,
|
|
getMessageExtensionNumberPath(fieldIndex, topLevelMessageIndex, nestedMessageIndexes...),
|
|
getMessageExtensionTypePath(fieldIndex, topLevelMessageIndex, nestedMessageIndexes...),
|
|
getMessageExtensionTypeNamePath(fieldIndex, topLevelMessageIndex, nestedMessageIndexes...),
|
|
getMessageExtensionJSONNamePath(fieldIndex, topLevelMessageIndex, nestedMessageIndexes...),
|
|
getMessageExtensionJSTypePath(fieldIndex, topLevelMessageIndex, nestedMessageIndexes...),
|
|
getMessageExtensionCTypePath(fieldIndex, topLevelMessageIndex, nestedMessageIndexes...),
|
|
getMessageExtensionPackedPath(fieldIndex, topLevelMessageIndex, nestedMessageIndexes...),
|
|
)
|
|
message.addExtension(field)
|
|
if oneof != nil {
|
|
oneof.addField(field)
|
|
}
|
|
}
|
|
for reservedRangeIndex, reservedRangeDescriptorProto := range descriptorProto.GetReservedRange() {
|
|
reservedRangeLocationDescriptor := newLocationDescriptor(
|
|
f.descriptor,
|
|
getMessageReservedRangePath(reservedRangeIndex, topLevelMessageIndex, nestedMessageIndexes...),
|
|
)
|
|
reservedMessageRange := newMessageRange(
|
|
reservedRangeLocationDescriptor,
|
|
message,
|
|
int(reservedRangeDescriptorProto.GetStart()),
|
|
int(reservedRangeDescriptorProto.GetEnd()),
|
|
)
|
|
message.addReservedMessageRange(reservedMessageRange)
|
|
}
|
|
for reservedNameIndex, reservedNameValue := range descriptorProto.GetReservedName() {
|
|
reservedNameLocationDescriptor := newLocationDescriptor(
|
|
f.descriptor,
|
|
getMessageReservedNamePath(reservedNameIndex, topLevelMessageIndex, nestedMessageIndexes...),
|
|
)
|
|
reservedName, err := newReservedName(
|
|
reservedNameLocationDescriptor,
|
|
reservedNameValue,
|
|
)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
message.addReservedName(reservedName)
|
|
}
|
|
for extensionRangeIndex, extensionRangeDescriptorProto := range descriptorProto.GetExtensionRange() {
|
|
extensionRangeLocationDescriptor := newLocationDescriptor(
|
|
f.descriptor,
|
|
getMessageExtensionRangePath(extensionRangeIndex, topLevelMessageIndex, nestedMessageIndexes...),
|
|
)
|
|
extensionMessageRange := newMessageRange(
|
|
extensionRangeLocationDescriptor,
|
|
message,
|
|
int(extensionRangeDescriptorProto.GetStart()),
|
|
int(extensionRangeDescriptorProto.GetEnd()),
|
|
)
|
|
message.addExtensionMessageRange(extensionMessageRange)
|
|
}
|
|
for enumIndex, enumDescriptorProto := range descriptorProto.GetEnumType() {
|
|
nestedEnum, err := f.populateEnum(
|
|
enumDescriptorProto,
|
|
enumIndex,
|
|
// this is all of the message indexes including this one
|
|
// TODO we should refactor get.*Path messages to be more consistent
|
|
append([]int{topLevelMessageIndex}, nestedMessageIndexes...),
|
|
append(nestedMessageNames, message.Name()),
|
|
)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
message.addNestedEnum(nestedEnum)
|
|
}
|
|
for nestedMessageIndex, nestedMessageDescriptorProto := range descriptorProto.GetNestedType() {
|
|
nestedMessage, err := f.populateMessage(
|
|
nestedMessageDescriptorProto,
|
|
topLevelMessageIndex,
|
|
append(nestedMessageIndexes, nestedMessageIndex),
|
|
append(nestedMessageNames, message.Name()),
|
|
message,
|
|
)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
message.addNestedMessage(nestedMessage)
|
|
}
|
|
return message, nil
|
|
}
|
|
|
|
func (f *file) populateService(
|
|
serviceDescriptorProto *descriptorpb.ServiceDescriptorProto,
|
|
serviceIndex int,
|
|
) (Service, error) {
|
|
serviceNamedDescriptor, err := newNamedDescriptor(
|
|
newLocationDescriptor(
|
|
f.descriptor,
|
|
getServicePath(serviceIndex),
|
|
),
|
|
serviceDescriptorProto.GetName(),
|
|
getServiceNamePath(serviceIndex),
|
|
nil,
|
|
)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
service := newService(
|
|
serviceNamedDescriptor,
|
|
)
|
|
for methodIndex, methodDescriptorProto := range serviceDescriptorProto.GetMethod() {
|
|
methodNamedDescriptor, err := newNamedDescriptor(
|
|
newLocationDescriptor(
|
|
f.descriptor,
|
|
getMethodPath(serviceIndex, methodIndex),
|
|
),
|
|
methodDescriptorProto.GetName(),
|
|
getMethodNamePath(serviceIndex, methodIndex),
|
|
[]string{service.Name()},
|
|
)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
idempotencyLevel, err := getMethodOptionsIdempotencyLevel(methodDescriptorProto.GetOptions().GetIdempotencyLevel())
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
method, err := newMethod(
|
|
methodNamedDescriptor,
|
|
service,
|
|
methodDescriptorProto.GetInputType(),
|
|
methodDescriptorProto.GetOutputType(),
|
|
methodDescriptorProto.GetClientStreaming(),
|
|
methodDescriptorProto.GetServerStreaming(),
|
|
getMethodInputTypePath(serviceIndex, methodIndex),
|
|
getMethodOutputTypePath(serviceIndex, methodIndex),
|
|
idempotencyLevel,
|
|
getMethodIdempotencyLevelPath(serviceIndex, methodIndex),
|
|
)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
service.addMethod(method)
|
|
}
|
|
return service, nil
|
|
}
|