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authorLibravatar Terin Stock <terinjokes@gmail.com>2025-03-09 17:47:56 +0100
committerLibravatar Terin Stock <terinjokes@gmail.com>2025-03-10 01:59:49 +0100
commit3ac1ee16f377d31a0fb80c8dae28b6239ac4229e (patch)
treef61faa581feaaeaba2542b9f2b8234a590684413 /vendor/google.golang.org/protobuf/internal/impl/legacy_enum.go
parent[chore] update URLs to forked source (diff)
downloadgotosocial-3ac1ee16f377d31a0fb80c8dae28b6239ac4229e.tar.xz
[chore] remove vendor
Diffstat (limited to 'vendor/google.golang.org/protobuf/internal/impl/legacy_enum.go')
-rw-r--r--vendor/google.golang.org/protobuf/internal/impl/legacy_enum.go219
1 files changed, 0 insertions, 219 deletions
diff --git a/vendor/google.golang.org/protobuf/internal/impl/legacy_enum.go b/vendor/google.golang.org/protobuf/internal/impl/legacy_enum.go
deleted file mode 100644
index 81b2b1a76..000000000
--- a/vendor/google.golang.org/protobuf/internal/impl/legacy_enum.go
+++ /dev/null
@@ -1,219 +0,0 @@
-// 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 impl
-
-import (
- "fmt"
- "reflect"
- "strings"
- "sync"
-
- "google.golang.org/protobuf/internal/filedesc"
- "google.golang.org/protobuf/internal/strs"
- "google.golang.org/protobuf/reflect/protoreflect"
-)
-
-// legacyEnumName returns the name of enums used in legacy code.
-// It is neither the protobuf full name nor the qualified Go name,
-// but rather an odd hybrid of both.
-func legacyEnumName(ed protoreflect.EnumDescriptor) string {
- var protoPkg string
- enumName := string(ed.FullName())
- if fd := ed.ParentFile(); fd != nil {
- protoPkg = string(fd.Package())
- enumName = strings.TrimPrefix(enumName, protoPkg+".")
- }
- if protoPkg == "" {
- return strs.GoCamelCase(enumName)
- }
- return protoPkg + "." + strs.GoCamelCase(enumName)
-}
-
-// legacyWrapEnum wraps v as a protoreflect.Enum,
-// where v must be a int32 kind and not implement the v2 API already.
-func legacyWrapEnum(v reflect.Value) protoreflect.Enum {
- et := legacyLoadEnumType(v.Type())
- return et.New(protoreflect.EnumNumber(v.Int()))
-}
-
-var legacyEnumTypeCache sync.Map // map[reflect.Type]protoreflect.EnumType
-
-// legacyLoadEnumType dynamically loads a protoreflect.EnumType for t,
-// where t must be an int32 kind and not implement the v2 API already.
-func legacyLoadEnumType(t reflect.Type) protoreflect.EnumType {
- // Fast-path: check if a EnumType is cached for this concrete type.
- if et, ok := legacyEnumTypeCache.Load(t); ok {
- return et.(protoreflect.EnumType)
- }
-
- // Slow-path: derive enum descriptor and initialize EnumType.
- var et protoreflect.EnumType
- ed := LegacyLoadEnumDesc(t)
- et = &legacyEnumType{
- desc: ed,
- goType: t,
- }
- if et, ok := legacyEnumTypeCache.LoadOrStore(t, et); ok {
- return et.(protoreflect.EnumType)
- }
- return et
-}
-
-type legacyEnumType struct {
- desc protoreflect.EnumDescriptor
- goType reflect.Type
- m sync.Map // map[protoreflect.EnumNumber]proto.Enum
-}
-
-func (t *legacyEnumType) New(n protoreflect.EnumNumber) protoreflect.Enum {
- if e, ok := t.m.Load(n); ok {
- return e.(protoreflect.Enum)
- }
- e := &legacyEnumWrapper{num: n, pbTyp: t, goTyp: t.goType}
- t.m.Store(n, e)
- return e
-}
-func (t *legacyEnumType) Descriptor() protoreflect.EnumDescriptor {
- return t.desc
-}
-
-type legacyEnumWrapper struct {
- num protoreflect.EnumNumber
- pbTyp protoreflect.EnumType
- goTyp reflect.Type
-}
-
-func (e *legacyEnumWrapper) Descriptor() protoreflect.EnumDescriptor {
- return e.pbTyp.Descriptor()
-}
-func (e *legacyEnumWrapper) Type() protoreflect.EnumType {
- return e.pbTyp
-}
-func (e *legacyEnumWrapper) Number() protoreflect.EnumNumber {
- return e.num
-}
-func (e *legacyEnumWrapper) ProtoReflect() protoreflect.Enum {
- return e
-}
-func (e *legacyEnumWrapper) protoUnwrap() any {
- v := reflect.New(e.goTyp).Elem()
- v.SetInt(int64(e.num))
- return v.Interface()
-}
-
-var (
- _ protoreflect.Enum = (*legacyEnumWrapper)(nil)
- _ unwrapper = (*legacyEnumWrapper)(nil)
-)
-
-var legacyEnumDescCache sync.Map // map[reflect.Type]protoreflect.EnumDescriptor
-
-// LegacyLoadEnumDesc returns an EnumDescriptor derived from the Go type,
-// which must be an int32 kind and not implement the v2 API already.
-//
-// This is exported for testing purposes.
-func LegacyLoadEnumDesc(t reflect.Type) protoreflect.EnumDescriptor {
- // Fast-path: check if an EnumDescriptor is cached for this concrete type.
- if ed, ok := legacyEnumDescCache.Load(t); ok {
- return ed.(protoreflect.EnumDescriptor)
- }
-
- // Slow-path: initialize EnumDescriptor from the raw descriptor.
- ev := reflect.Zero(t).Interface()
- if _, ok := ev.(protoreflect.Enum); ok {
- panic(fmt.Sprintf("%v already implements proto.Enum", t))
- }
- edV1, ok := ev.(enumV1)
- if !ok {
- return aberrantLoadEnumDesc(t)
- }
- b, idxs := edV1.EnumDescriptor()
-
- var ed protoreflect.EnumDescriptor
- if len(idxs) == 1 {
- ed = legacyLoadFileDesc(b).Enums().Get(idxs[0])
- } else {
- md := legacyLoadFileDesc(b).Messages().Get(idxs[0])
- for _, i := range idxs[1 : len(idxs)-1] {
- md = md.Messages().Get(i)
- }
- ed = md.Enums().Get(idxs[len(idxs)-1])
- }
- if ed, ok := legacyEnumDescCache.LoadOrStore(t, ed); ok {
- return ed.(protoreflect.EnumDescriptor)
- }
- return ed
-}
-
-var aberrantEnumDescCache sync.Map // map[reflect.Type]protoreflect.EnumDescriptor
-
-// aberrantLoadEnumDesc returns an EnumDescriptor derived from the Go type,
-// which must not implement protoreflect.Enum or enumV1.
-//
-// If the type does not implement enumV1, then there is no reliable
-// way to derive the original protobuf type information.
-// We are unable to use the global enum registry since it is
-// unfortunately keyed by the protobuf full name, which we also do not know.
-// Thus, this produces some bogus enum descriptor based on the Go type name.
-func aberrantLoadEnumDesc(t reflect.Type) protoreflect.EnumDescriptor {
- // Fast-path: check if an EnumDescriptor is cached for this concrete type.
- if ed, ok := aberrantEnumDescCache.Load(t); ok {
- return ed.(protoreflect.EnumDescriptor)
- }
-
- // Slow-path: construct a bogus, but unique EnumDescriptor.
- ed := &filedesc.Enum{L2: new(filedesc.EnumL2)}
- ed.L0.FullName = AberrantDeriveFullName(t) // e.g., github_com.user.repo.MyEnum
- ed.L0.ParentFile = filedesc.SurrogateProto3
- ed.L1.EditionFeatures = ed.L0.ParentFile.L1.EditionFeatures
- ed.L2.Values.List = append(ed.L2.Values.List, filedesc.EnumValue{})
-
- // TODO: Use the presence of a UnmarshalJSON method to determine proto2?
-
- vd := &ed.L2.Values.List[0]
- vd.L0.FullName = ed.L0.FullName + "_UNKNOWN" // e.g., github_com.user.repo.MyEnum_UNKNOWN
- vd.L0.ParentFile = ed.L0.ParentFile
- vd.L0.Parent = ed
-
- // TODO: We could use the String method to obtain some enum value names by
- // starting at 0 and print the enum until it produces invalid identifiers.
- // An exhaustive query is clearly impractical, but can be best-effort.
-
- if ed, ok := aberrantEnumDescCache.LoadOrStore(t, ed); ok {
- return ed.(protoreflect.EnumDescriptor)
- }
- return ed
-}
-
-// AberrantDeriveFullName derives a fully qualified protobuf name for the given Go type
-// The provided name is not guaranteed to be stable nor universally unique.
-// It should be sufficiently unique within a program.
-//
-// This is exported for testing purposes.
-func AberrantDeriveFullName(t reflect.Type) protoreflect.FullName {
- sanitize := func(r rune) rune {
- switch {
- case r == '/':
- return '.'
- case 'a' <= r && r <= 'z', 'A' <= r && r <= 'Z', '0' <= r && r <= '9':
- return r
- default:
- return '_'
- }
- }
- prefix := strings.Map(sanitize, t.PkgPath())
- suffix := strings.Map(sanitize, t.Name())
- if suffix == "" {
- suffix = fmt.Sprintf("UnknownX%X", reflect.ValueOf(t).Pointer())
- }
-
- ss := append(strings.Split(prefix, "."), suffix)
- for i, s := range ss {
- if s == "" || ('0' <= s[0] && s[0] <= '9') {
- ss[i] = "x" + s
- }
- }
- return protoreflect.FullName(strings.Join(ss, "."))
-}