diff options
Diffstat (limited to 'vendor/google.golang.org/protobuf/reflect/protodesc/editions.go')
-rw-r--r-- | vendor/google.golang.org/protobuf/reflect/protodesc/editions.go | 148 |
1 files changed, 0 insertions, 148 deletions
diff --git a/vendor/google.golang.org/protobuf/reflect/protodesc/editions.go b/vendor/google.golang.org/protobuf/reflect/protodesc/editions.go deleted file mode 100644 index 2a6b29d17..000000000 --- a/vendor/google.golang.org/protobuf/reflect/protodesc/editions.go +++ /dev/null @@ -1,148 +0,0 @@ -// 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 protodesc - -import ( - "fmt" - "os" - "sync" - - "google.golang.org/protobuf/internal/editiondefaults" - "google.golang.org/protobuf/internal/filedesc" - "google.golang.org/protobuf/proto" - "google.golang.org/protobuf/reflect/protoreflect" - "google.golang.org/protobuf/types/descriptorpb" - gofeaturespb "google.golang.org/protobuf/types/gofeaturespb" -) - -const ( - SupportedEditionsMinimum = descriptorpb.Edition_EDITION_PROTO2 - SupportedEditionsMaximum = descriptorpb.Edition_EDITION_2023 -) - -var defaults = &descriptorpb.FeatureSetDefaults{} -var defaultsCacheMu sync.Mutex -var defaultsCache = make(map[filedesc.Edition]*descriptorpb.FeatureSet) - -func init() { - err := proto.Unmarshal(editiondefaults.Defaults, defaults) - if err != nil { - fmt.Fprintf(os.Stderr, "unmarshal editions defaults: %v\n", err) - os.Exit(1) - } -} - -func fromEditionProto(epb descriptorpb.Edition) filedesc.Edition { - return filedesc.Edition(epb) -} - -func toEditionProto(ed filedesc.Edition) descriptorpb.Edition { - switch ed { - case filedesc.EditionUnknown: - return descriptorpb.Edition_EDITION_UNKNOWN - case filedesc.EditionProto2: - return descriptorpb.Edition_EDITION_PROTO2 - case filedesc.EditionProto3: - return descriptorpb.Edition_EDITION_PROTO3 - case filedesc.Edition2023: - return descriptorpb.Edition_EDITION_2023 - default: - panic(fmt.Sprintf("unknown value for edition: %v", ed)) - } -} - -func getFeatureSetFor(ed filedesc.Edition) *descriptorpb.FeatureSet { - defaultsCacheMu.Lock() - defer defaultsCacheMu.Unlock() - if def, ok := defaultsCache[ed]; ok { - return def - } - edpb := toEditionProto(ed) - if defaults.GetMinimumEdition() > edpb || defaults.GetMaximumEdition() < edpb { - // This should never happen protodesc.(FileOptions).New would fail when - // initializing the file descriptor. - // This most likely means the embedded defaults were not updated. - fmt.Fprintf(os.Stderr, "internal error: unsupported edition %v (did you forget to update the embedded defaults (i.e. the bootstrap descriptor proto)?)\n", edpb) - os.Exit(1) - } - fs := defaults.GetDefaults()[0].GetFeatures() - // Using a linear search for now. - // Editions are guaranteed to be sorted and thus we could use a binary search. - // Given that there are only a handful of editions (with one more per year) - // there is not much reason to use a binary search. - for _, def := range defaults.GetDefaults() { - if def.GetEdition() <= edpb { - fs = def.GetFeatures() - } else { - break - } - } - defaultsCache[ed] = fs - return fs -} - -// mergeEditionFeatures merges the parent and child feature sets. This function -// should be used when initializing Go descriptors from descriptor protos which -// is why the parent is a filedesc.EditionsFeatures (Go representation) while -// the child is a descriptorproto.FeatureSet (protoc representation). -// Any feature set by the child overwrites what is set by the parent. -func mergeEditionFeatures(parentDesc protoreflect.Descriptor, child *descriptorpb.FeatureSet) filedesc.EditionFeatures { - var parentFS filedesc.EditionFeatures - switch p := parentDesc.(type) { - case *filedesc.File: - parentFS = p.L1.EditionFeatures - case *filedesc.Message: - parentFS = p.L1.EditionFeatures - default: - panic(fmt.Sprintf("unknown parent type %T", parentDesc)) - } - if child == nil { - return parentFS - } - if fp := child.FieldPresence; fp != nil { - parentFS.IsFieldPresence = *fp == descriptorpb.FeatureSet_LEGACY_REQUIRED || - *fp == descriptorpb.FeatureSet_EXPLICIT - parentFS.IsLegacyRequired = *fp == descriptorpb.FeatureSet_LEGACY_REQUIRED - } - if et := child.EnumType; et != nil { - parentFS.IsOpenEnum = *et == descriptorpb.FeatureSet_OPEN - } - - if rfe := child.RepeatedFieldEncoding; rfe != nil { - parentFS.IsPacked = *rfe == descriptorpb.FeatureSet_PACKED - } - - if utf8val := child.Utf8Validation; utf8val != nil { - parentFS.IsUTF8Validated = *utf8val == descriptorpb.FeatureSet_VERIFY - } - - if me := child.MessageEncoding; me != nil { - parentFS.IsDelimitedEncoded = *me == descriptorpb.FeatureSet_DELIMITED - } - - if jf := child.JsonFormat; jf != nil { - parentFS.IsJSONCompliant = *jf == descriptorpb.FeatureSet_ALLOW - } - - if goFeatures, ok := proto.GetExtension(child, gofeaturespb.E_Go).(*gofeaturespb.GoFeatures); ok && goFeatures != nil { - if luje := goFeatures.LegacyUnmarshalJsonEnum; luje != nil { - parentFS.GenerateLegacyUnmarshalJSON = *luje - } - } - - return parentFS -} - -// initFileDescFromFeatureSet initializes editions related fields in fd based -// on fs. If fs is nil it is assumed to be an empty featureset and all fields -// will be initialized with the appropriate default. fd.L1.Edition must be set -// before calling this function. -func initFileDescFromFeatureSet(fd *filedesc.File, fs *descriptorpb.FeatureSet) { - dfs := getFeatureSetFor(fd.L1.Edition) - // initialize the featureset with the defaults - fd.L1.EditionFeatures = mergeEditionFeatures(fd, dfs) - // overwrite any options explicitly specified - fd.L1.EditionFeatures = mergeEditionFeatures(fd, fs) -} |