placeholder.go raw

   1  // Copyright 2019 The Go Authors. All rights reserved.
   2  // Use of this source code is governed by a BSD-style
   3  // license that can be found in the LICENSE file.
   4  
   5  package filedesc
   6  
   7  import (
   8  	"google.golang.org/protobuf/internal/descopts"
   9  	"google.golang.org/protobuf/internal/pragma"
  10  	"google.golang.org/protobuf/reflect/protoreflect"
  11  )
  12  
  13  var (
  14  	emptyNames           = new(Names)
  15  	emptyEnumRanges      = new(EnumRanges)
  16  	emptyFieldRanges     = new(FieldRanges)
  17  	emptyFieldNumbers    = new(FieldNumbers)
  18  	emptySourceLocations = new(SourceLocations)
  19  
  20  	emptyFiles      = new(FileImports)
  21  	emptyMessages   = new(Messages)
  22  	emptyFields     = new(Fields)
  23  	emptyOneofs     = new(Oneofs)
  24  	emptyEnums      = new(Enums)
  25  	emptyEnumValues = new(EnumValues)
  26  	emptyExtensions = new(Extensions)
  27  	emptyServices   = new(Services)
  28  )
  29  
  30  // PlaceholderFile is a placeholder, representing only the file path.
  31  type PlaceholderFile string
  32  
  33  func (f PlaceholderFile) ParentFile() protoreflect.FileDescriptor       { return f }
  34  func (f PlaceholderFile) Parent() protoreflect.Descriptor               { return nil }
  35  func (f PlaceholderFile) Index() int                                    { return 0 }
  36  func (f PlaceholderFile) Syntax() protoreflect.Syntax                   { return 0 }
  37  func (f PlaceholderFile) Name() protoreflect.Name                       { return "" }
  38  func (f PlaceholderFile) FullName() protoreflect.FullName               { return "" }
  39  func (f PlaceholderFile) IsPlaceholder() bool                           { return true }
  40  func (f PlaceholderFile) Options() protoreflect.ProtoMessage            { return descopts.File }
  41  func (f PlaceholderFile) Path() string                                  { return string(f) }
  42  func (f PlaceholderFile) Package() protoreflect.FullName                { return "" }
  43  func (f PlaceholderFile) Imports() protoreflect.FileImports             { return emptyFiles }
  44  func (f PlaceholderFile) Messages() protoreflect.MessageDescriptors     { return emptyMessages }
  45  func (f PlaceholderFile) Enums() protoreflect.EnumDescriptors           { return emptyEnums }
  46  func (f PlaceholderFile) Extensions() protoreflect.ExtensionDescriptors { return emptyExtensions }
  47  func (f PlaceholderFile) Services() protoreflect.ServiceDescriptors     { return emptyServices }
  48  func (f PlaceholderFile) SourceLocations() protoreflect.SourceLocations { return emptySourceLocations }
  49  func (f PlaceholderFile) ProtoType(protoreflect.FileDescriptor)         { return }
  50  func (f PlaceholderFile) ProtoInternal(pragma.DoNotImplement)           { return }
  51  
  52  // PlaceholderEnum is a placeholder, representing only the full name.
  53  type PlaceholderEnum protoreflect.FullName
  54  
  55  func (e PlaceholderEnum) ParentFile() protoreflect.FileDescriptor   { return nil }
  56  func (e PlaceholderEnum) Parent() protoreflect.Descriptor           { return nil }
  57  func (e PlaceholderEnum) Index() int                                { return 0 }
  58  func (e PlaceholderEnum) Syntax() protoreflect.Syntax               { return 0 }
  59  func (e PlaceholderEnum) Name() protoreflect.Name                   { return protoreflect.FullName(e).Name() }
  60  func (e PlaceholderEnum) FullName() protoreflect.FullName           { return protoreflect.FullName(e) }
  61  func (e PlaceholderEnum) IsPlaceholder() bool                       { return true }
  62  func (e PlaceholderEnum) Options() protoreflect.ProtoMessage        { return descopts.Enum }
  63  func (e PlaceholderEnum) Values() protoreflect.EnumValueDescriptors { return emptyEnumValues }
  64  func (e PlaceholderEnum) ReservedNames() protoreflect.Names         { return emptyNames }
  65  func (e PlaceholderEnum) ReservedRanges() protoreflect.EnumRanges   { return emptyEnumRanges }
  66  func (e PlaceholderEnum) IsClosed() bool                            { return false }
  67  func (e PlaceholderEnum) ProtoType(protoreflect.EnumDescriptor)     { return }
  68  func (e PlaceholderEnum) ProtoInternal(pragma.DoNotImplement)       { return }
  69  
  70  // PlaceholderEnumValue is a placeholder, representing only the full name.
  71  type PlaceholderEnumValue protoreflect.FullName
  72  
  73  func (e PlaceholderEnumValue) ParentFile() protoreflect.FileDescriptor    { return nil }
  74  func (e PlaceholderEnumValue) Parent() protoreflect.Descriptor            { return nil }
  75  func (e PlaceholderEnumValue) Index() int                                 { return 0 }
  76  func (e PlaceholderEnumValue) Syntax() protoreflect.Syntax                { return 0 }
  77  func (e PlaceholderEnumValue) Name() protoreflect.Name                    { return protoreflect.FullName(e).Name() }
  78  func (e PlaceholderEnumValue) FullName() protoreflect.FullName            { return protoreflect.FullName(e) }
  79  func (e PlaceholderEnumValue) IsPlaceholder() bool                        { return true }
  80  func (e PlaceholderEnumValue) Options() protoreflect.ProtoMessage         { return descopts.EnumValue }
  81  func (e PlaceholderEnumValue) Number() protoreflect.EnumNumber            { return 0 }
  82  func (e PlaceholderEnumValue) ProtoType(protoreflect.EnumValueDescriptor) { return }
  83  func (e PlaceholderEnumValue) ProtoInternal(pragma.DoNotImplement)        { return }
  84  
  85  // PlaceholderMessage is a placeholder, representing only the full name.
  86  type PlaceholderMessage protoreflect.FullName
  87  
  88  func (m PlaceholderMessage) ParentFile() protoreflect.FileDescriptor    { return nil }
  89  func (m PlaceholderMessage) Parent() protoreflect.Descriptor            { return nil }
  90  func (m PlaceholderMessage) Index() int                                 { return 0 }
  91  func (m PlaceholderMessage) Syntax() protoreflect.Syntax                { return 0 }
  92  func (m PlaceholderMessage) Name() protoreflect.Name                    { return protoreflect.FullName(m).Name() }
  93  func (m PlaceholderMessage) FullName() protoreflect.FullName            { return protoreflect.FullName(m) }
  94  func (m PlaceholderMessage) IsPlaceholder() bool                        { return true }
  95  func (m PlaceholderMessage) Options() protoreflect.ProtoMessage         { return descopts.Message }
  96  func (m PlaceholderMessage) IsMapEntry() bool                           { return false }
  97  func (m PlaceholderMessage) Fields() protoreflect.FieldDescriptors      { return emptyFields }
  98  func (m PlaceholderMessage) Oneofs() protoreflect.OneofDescriptors      { return emptyOneofs }
  99  func (m PlaceholderMessage) ReservedNames() protoreflect.Names          { return emptyNames }
 100  func (m PlaceholderMessage) ReservedRanges() protoreflect.FieldRanges   { return emptyFieldRanges }
 101  func (m PlaceholderMessage) RequiredNumbers() protoreflect.FieldNumbers { return emptyFieldNumbers }
 102  func (m PlaceholderMessage) ExtensionRanges() protoreflect.FieldRanges  { return emptyFieldRanges }
 103  func (m PlaceholderMessage) ExtensionRangeOptions(int) protoreflect.ProtoMessage {
 104  	panic("index out of range")
 105  }
 106  func (m PlaceholderMessage) Messages() protoreflect.MessageDescriptors     { return emptyMessages }
 107  func (m PlaceholderMessage) Enums() protoreflect.EnumDescriptors           { return emptyEnums }
 108  func (m PlaceholderMessage) Extensions() protoreflect.ExtensionDescriptors { return emptyExtensions }
 109  func (m PlaceholderMessage) ProtoType(protoreflect.MessageDescriptor)      { return }
 110  func (m PlaceholderMessage) ProtoInternal(pragma.DoNotImplement)           { return }
 111