1 files changed, 0 insertions, 92 deletions
diff --git a/proto/extension.go b/proto/extension.go
deleted file mode 100644
index 5f293cda..00000000
--- a/proto/extension.go
+++ /dev/null
@@ -1,92 +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 proto
-
-import (
-	"google.golang.org/protobuf/reflect/protoreflect"
-)
-
-// HasExtension reports whether an extension field is populated.
-// It returns false if m is invalid or if xt does not extend m.
-func HasExtension(m Message, xt protoreflect.ExtensionType) bool {
-	// Treat nil message interface as an empty message; no populated fields.
-	if m == nil {
-		return false
-	}
-
-	// As a special-case, we reports invalid or mismatching descriptors
-	// as always not being populated (since they aren't).
-	if xt == nil || m.ProtoReflect().Descriptor() != xt.TypeDescriptor().ContainingMessage() {
-		return false
-	}
-
-	return m.ProtoReflect().Has(xt.TypeDescriptor())
-}
-
-// ClearExtension clears an extension field such that subsequent
-// HasExtension calls return false.
-// It panics if m is invalid or if xt does not extend m.
-func ClearExtension(m Message, xt protoreflect.ExtensionType) {
-	m.ProtoReflect().Clear(xt.TypeDescriptor())
-}
-
-// GetExtension retrieves the value for an extension field.
-// If the field is unpopulated, it returns the default value for
-// scalars and an immutable, empty value for lists or messages.
-// It panics if xt does not extend m.
-func GetExtension(m Message, xt protoreflect.ExtensionType) interface{} {
-	// Treat nil message interface as an empty message; return the default.
-	if m == nil {
-		return xt.InterfaceOf(xt.Zero())
-	}
-
-	return xt.InterfaceOf(m.ProtoReflect().Get(xt.TypeDescriptor()))
-}
-
-// SetExtension stores the value of an extension field.
-// It panics if m is invalid, xt does not extend m, or if type of v
-// is invalid for the specified extension field.
-func SetExtension(m Message, xt protoreflect.ExtensionType, v interface{}) {
-	xd := xt.TypeDescriptor()
-	pv := xt.ValueOf(v)
-
-	// Specially treat an invalid list, map, or message as clear.
-	isValid := true
-	switch {
-	case xd.IsList():
-		isValid = pv.List().IsValid()
-	case xd.IsMap():
-		isValid = pv.Map().IsValid()
-	case xd.Message() != nil:
-		isValid = pv.Message().IsValid()
-	}
-	if !isValid {
-		m.ProtoReflect().Clear(xd)
-		return
-	}
-
-	m.ProtoReflect().Set(xd, pv)
-}
-
-// RangeExtensions iterates over every populated extension field in m in an
-// undefined order, calling f for each extension type and value encountered.
-// It returns immediately if f returns false.
-// While iterating, mutating operations may only be performed
-// on the current extension field.
-func RangeExtensions(m Message, f func(protoreflect.ExtensionType, interface{}) bool) {
-	// Treat nil message interface as an empty message; nothing to range over.
-	if m == nil {
-		return
-	}
-
-	m.ProtoReflect().Range(func(fd protoreflect.FieldDescriptor, v protoreflect.Value) bool {
-		if fd.IsExtension() {
-			xt := fd.(protoreflect.ExtensionTypeDescriptor).Type()
-			vi := xt.InterfaceOf(v)
-			return f(xt, vi)
-		}
-		return true
-	})
-}