diff options
author | Wim <wim@42.be> | 2020-08-10 00:29:54 +0200 |
---|---|---|
committer | GitHub <noreply@github.com> | 2020-08-10 00:29:54 +0200 |
commit | 4e50fd864921c556988c919269448efdb90fa961 (patch) | |
tree | a3625f03f8de3c4f3841364000a4ea3aa42c1533 /vendor/google.golang.org/protobuf/internal/filedesc/build.go | |
parent | dfdffa0027334e55ce213fc6eb62206dbf48baf6 (diff) | |
download | matterbridge-msglm-4e50fd864921c556988c919269448efdb90fa961.tar.gz matterbridge-msglm-4e50fd864921c556988c919269448efdb90fa961.tar.bz2 matterbridge-msglm-4e50fd864921c556988c919269448efdb90fa961.zip |
Use mattermost v5 module (#1192)
Diffstat (limited to 'vendor/google.golang.org/protobuf/internal/filedesc/build.go')
-rw-r--r-- | vendor/google.golang.org/protobuf/internal/filedesc/build.go | 155 |
1 files changed, 155 insertions, 0 deletions
diff --git a/vendor/google.golang.org/protobuf/internal/filedesc/build.go b/vendor/google.golang.org/protobuf/internal/filedesc/build.go new file mode 100644 index 00000000..462d384e --- /dev/null +++ b/vendor/google.golang.org/protobuf/internal/filedesc/build.go @@ -0,0 +1,155 @@ +// Copyright 2019 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 filedesc provides functionality for constructing descriptors. +package filedesc + +import ( + "google.golang.org/protobuf/encoding/protowire" + "google.golang.org/protobuf/internal/fieldnum" + "google.golang.org/protobuf/reflect/protoreflect" + pref "google.golang.org/protobuf/reflect/protoreflect" + preg "google.golang.org/protobuf/reflect/protoregistry" +) + +// Builder construct a protoreflect.FileDescriptor from the raw descriptor. +type Builder struct { + // GoPackagePath is the Go package path that is invoking this builder. + GoPackagePath string + + // RawDescriptor is the wire-encoded bytes of FileDescriptorProto + // and must be populated. + RawDescriptor []byte + + // NumEnums is the total number of enums declared in the file. + NumEnums int32 + // NumMessages is the total number of messages declared in the file. + // It includes the implicit message declarations for map entries. + NumMessages int32 + // NumExtensions is the total number of extensions declared in the file. + NumExtensions int32 + // NumServices is the total number of services declared in the file. + NumServices int32 + + // TypeResolver resolves extension field types for descriptor options. + // If nil, it uses protoregistry.GlobalTypes. + TypeResolver interface { + preg.ExtensionTypeResolver + } + + // FileRegistry is use to lookup file, enum, and message dependencies. + // Once constructed, the file descriptor is registered here. + // If nil, it uses protoregistry.GlobalFiles. + FileRegistry interface { + FindFileByPath(string) (protoreflect.FileDescriptor, error) + FindDescriptorByName(pref.FullName) (pref.Descriptor, error) + RegisterFile(pref.FileDescriptor) error + } +} + +// resolverByIndex is an interface Builder.FileRegistry may implement. +// If so, it permits looking up an enum or message dependency based on the +// sub-list and element index into filetype.Builder.DependencyIndexes. +type resolverByIndex interface { + FindEnumByIndex(int32, int32, []Enum, []Message) pref.EnumDescriptor + FindMessageByIndex(int32, int32, []Enum, []Message) pref.MessageDescriptor +} + +// Indexes of each sub-list in filetype.Builder.DependencyIndexes. +const ( + listFieldDeps int32 = iota + listExtTargets + listExtDeps + listMethInDeps + listMethOutDeps +) + +// Out is the output of the Builder. +type Out struct { + File pref.FileDescriptor + + // Enums is all enum descriptors in "flattened ordering". + Enums []Enum + // Messages is all message descriptors in "flattened ordering". + // It includes the implicit message declarations for map entries. + Messages []Message + // Extensions is all extension descriptors in "flattened ordering". + Extensions []Extension + // Service is all service descriptors in "flattened ordering". + Services []Service +} + +// Build constructs a FileDescriptor given the parameters set in Builder. +// It assumes that the inputs are well-formed and panics if any inconsistencies +// are encountered. +// +// If NumEnums+NumMessages+NumExtensions+NumServices is zero, +// then Build automatically derives them from the raw descriptor. +func (db Builder) Build() (out Out) { + // Populate the counts if uninitialized. + if db.NumEnums+db.NumMessages+db.NumExtensions+db.NumServices == 0 { + db.unmarshalCounts(db.RawDescriptor, true) + } + + // Initialize resolvers and registries if unpopulated. + if db.TypeResolver == nil { + db.TypeResolver = preg.GlobalTypes + } + if db.FileRegistry == nil { + db.FileRegistry = preg.GlobalFiles + } + + fd := newRawFile(db) + out.File = fd + out.Enums = fd.allEnums + out.Messages = fd.allMessages + out.Extensions = fd.allExtensions + out.Services = fd.allServices + + if err := db.FileRegistry.RegisterFile(fd); err != nil { + panic(err) + } + return out +} + +// unmarshalCounts counts the number of enum, message, extension, and service +// declarations in the raw message, which is either a FileDescriptorProto +// or a MessageDescriptorProto depending on whether isFile is set. +func (db *Builder) unmarshalCounts(b []byte, isFile bool) { + for len(b) > 0 { + num, typ, n := protowire.ConsumeTag(b) + b = b[n:] + switch typ { + case protowire.BytesType: + v, m := protowire.ConsumeBytes(b) + b = b[m:] + if isFile { + switch num { + case fieldnum.FileDescriptorProto_EnumType: + db.NumEnums++ + case fieldnum.FileDescriptorProto_MessageType: + db.unmarshalCounts(v, false) + db.NumMessages++ + case fieldnum.FileDescriptorProto_Extension: + db.NumExtensions++ + case fieldnum.FileDescriptorProto_Service: + db.NumServices++ + } + } else { + switch num { + case fieldnum.DescriptorProto_EnumType: + db.NumEnums++ + case fieldnum.DescriptorProto_NestedType: + db.unmarshalCounts(v, false) + db.NumMessages++ + case fieldnum.DescriptorProto_Extension: + db.NumExtensions++ + } + } + default: + m := protowire.ConsumeFieldValue(num, typ, b) + b = b[m:] + } + } +} |