internal/filedesc, internal/filetype: rename {Desc,Type}Builder as Builder

Reduce the stutter in the name since the type of Builder
is obvious from the package it is from.

Change-Id: I0046a5122717536cc6bb5ebdb32b67a1560cfc23
Reviewed-on: https://go-review.googlesource.com/c/protobuf/+/189020
Reviewed-by: Damien Neil <dneil@google.com>

internal/filedesc/build.go

@@ -13,8 +13,8 @@ import (
 	preg "google.golang.org/protobuf/reflect/protoregistry"
 )
 
-// DescBuilder construct a protoreflect.FileDescriptor from the raw descriptor.
-type DescBuilder struct {
+// 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
 
@@ -48,15 +48,15 @@ type DescBuilder struct {
 	}
 }
 
-// resolverByIndex is an interface DescBuilder.FileRegistry may implement.
+// 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.TypeBuilder.DependencyIndexes.
+// 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.TypeBuilder.DependencyIndexes.
+// Indexes of each sub-list in filetype.Builder.DependencyIndexes.
 const (
 	listFieldDeps int32 = iota
 	listExtTargets
@@ -65,13 +65,13 @@ const (
 	listMethOutDeps
 )
 
-// Build constructs a FileDescriptor given the parameters set in DescBuilder.
+// 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 DescBuilder) Build() (out struct {
+func (db Builder) Build() (out struct {
 	File pref.FileDescriptor
 
 	// Enums is all enum descriptors in "flattened ordering".
@@ -113,7 +113,7 @@ func (db DescBuilder) Build() (out struct {
 // 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 *DescBuilder) unmarshalCounts(b []byte, isFile bool) {
+func (db *Builder) unmarshalCounts(b []byte, isFile bool) {
 	for len(b) > 0 {
 		num, typ, n := wire.ConsumeTag(b)
 		b = b[n:]

internal/filedesc/desc_init.go

@@ -16,14 +16,14 @@ import (
 // fileRaw is a data struct used when initializing a file descriptor from
 // a raw FileDescriptorProto.
 type fileRaw struct {
-	builder       DescBuilder
+	builder       Builder
 	allEnums      []Enum
 	allMessages   []Message
 	allExtensions []Extension
 	allServices   []Service
 }
 
-func newRawFile(db DescBuilder) *File {
+func newRawFile(db Builder) *File {
 	fd := &File{fileRaw: fileRaw{builder: db}}
 	fd.initDecls(db.NumEnums, db.NumMessages, db.NumExtensions, db.NumServices)
 	fd.unmarshalSeed(db.RawDescriptor)

internal/filedesc/desc_lazy.go

@@ -678,7 +678,7 @@ func appendOptions(dst, src []byte) []byte {
 //
 // The type of message to unmarshal to is passed as a pointer since the
 // vars in descopts may not yet be populated at the time this function is called.
-func (db *DescBuilder) optionsUnmarshaler(p *pref.ProtoMessage, b []byte) func() pref.ProtoMessage {
+func (db *Builder) optionsUnmarshaler(p *pref.ProtoMessage, b []byte) func() pref.ProtoMessage {
 	if b == nil {
 		return nil
 	}

internal/filedesc/desc_test.go

@@ -198,14 +198,14 @@ func TestFile(t *testing.T) {
 	if err != nil {
 		t.Fatalf("proto.Marshal() error: %v", err)
 	}
-	fd2 := filedesc.DescBuilder{RawDescriptor: b}.Build().File
+	fd2 := filedesc.Builder{RawDescriptor: b}.Build().File
 
 	tests := []struct {
 		name string
 		desc pref.FileDescriptor
 	}{
 		{"protodesc.NewFile", fd1},
-		{"filedesc.DescBuilder.Build", fd2},
+		{"filedesc.Builder.Build", fd2},
 	}
 	for _, tt := range tests {
 		tt := tt

internal/filetype/build.go

@@ -21,7 +21,7 @@ import (
 	piface "google.golang.org/protobuf/runtime/protoiface"
 )
 
-// TypeBuilder constructs type descriptors from a raw file descriptor
+// Builder constructs type descriptors from a raw file descriptor
 // and associated Go types for each enum and message declaration.
 //
 //
@@ -55,9 +55,9 @@ import (
 // The traversal starts at the root file descriptor and yields each direct
 // declaration within each node before traversing into sub-declarations
 // that children themselves may have.
-type TypeBuilder struct {
+type Builder struct {
 	// File is the underlying file descriptor builder.
-	File fdesc.DescBuilder
+	File fdesc.Builder
 
 	// GoTypes is a unique set of the Go types for all declarations and
 	// dependencies. Each type is represented as a zero value of the Go type.
@@ -116,7 +116,7 @@ type TypeBuilder struct {
 	}
 }
 
-func (tb TypeBuilder) Build() (out struct {
+func (tb Builder) Build() (out struct {
 	File pref.FileDescriptor
 
 	// Enums is all enum types in "flattened ordering".

internal/impl/legacy_file.go

@@ -56,7 +56,7 @@ func legacyLoadFileDesc(b []byte) protoreflect.FileDescriptor {
 		panic(err)
 	}
 
-	fd := filedesc.DescBuilder{
+	fd := filedesc.Builder{
 		RawDescriptor: b2,
 		FileRegistry:  resolverOnly{protoregistry.GlobalFiles}, // do not register back to global registry
 	}.Build().File

runtime/protoimpl/impl.go

@@ -62,8 +62,8 @@ type (
 	// being a compilation failure (guaranteed by the Go specification).
 	EnforceVersion uint
 
-	DescBuilder      = filedesc.DescBuilder
-	TypeBuilder      = filetype.TypeBuilder
+	DescBuilder      = filedesc.Builder
+	TypeBuilder      = filetype.Builder
 	Pointer          = impl.Pointer
 	MessageInfo      = impl.MessageInfo
 	MessageState     = impl.MessageState