Update vendor

vendor/google.golang.org/protobuf/reflect/protoreflect/proto.go

@@ -8,8 +8,7 @@
 // defined in proto source files and value interfaces which provide the
 // ability to examine and manipulate the contents of messages.
 //
-//
-// Protocol Buffer Descriptors
+// # Protocol Buffer Descriptors
 //
 // Protobuf descriptors (e.g., EnumDescriptor or MessageDescriptor)
 // are immutable objects that represent protobuf type information.
@@ -26,8 +25,7 @@
 // The "google.golang.org/protobuf/reflect/protodesc" package converts between
 // google.protobuf.DescriptorProto messages and protobuf descriptors.
 //
-//
-// Go Type Descriptors
+// # Go Type Descriptors
 //
 // A type descriptor (e.g., EnumType or MessageType) is a constructor for
 // a concrete Go type that represents the associated protobuf descriptor.
@@ -41,8 +39,7 @@
 // The "google.golang.org/protobuf/types/dynamicpb" package can be used to
 // create Go type descriptors from protobuf descriptors.
 //
-//
-// Value Interfaces
+// # Value Interfaces
 //
 // The Enum and Message interfaces provide a reflective view over an
 // enum or message instance. For enums, it provides the ability to retrieve
@@ -55,13 +52,11 @@
 // The "github.com/golang/protobuf/proto".MessageReflect function can be used
 // to obtain a reflective view on older messages.
 //
-//
-// Relationships
+// # Relationships
 //
 // The following diagrams demonstrate the relationships between
 // various types declared in this package.
 //
-//
 //	                       ┌───────────────────────────────────┐
 //	                       V                                   │
 //	   ┌────────────── New(n) ─────────────┐                   │
@@ -83,7 +78,6 @@
 //
 // • An Enum is a concrete enum instance. Generated enums implement Enum.
 //
-//
 //	  ┌──────────────── New() ─────────────────┐
 //	  │                                        │
 //	  │         ┌─── Descriptor() ─────┐       │   ┌── Interface() ───┐
@@ -98,12 +92,22 @@
 //
 // • A MessageType describes a concrete Go message type.
 // It has a MessageDescriptor and can construct a Message instance.
+// Just as how Go's reflect.Type is a reflective description of a Go type,
+// a MessageType is a reflective description of a Go type for a protobuf message.
 //
 // • A MessageDescriptor describes an abstract protobuf message type.
+// It has no understanding of Go types. In order to construct a MessageType
+// from just a MessageDescriptor, you can consider looking up the message type
+// in the global registry using protoregistry.GlobalTypes.FindMessageByName
+// or constructing a dynamic MessageType using dynamicpb.NewMessageType.
 //
-// • A Message is a concrete message instance. Generated messages implement
-// ProtoMessage, which can convert to/from a Message.
-//
+// • A Message is a reflective view over a concrete message instance.
+// Generated messages implement ProtoMessage, which can convert to a Message.
+// Just as how Go's reflect.Value is a reflective view over a Go value,
+// a Message is a reflective view over a concrete protobuf message instance.
+// Using Go reflection as an analogy, the ProtoReflect method is similar to
+// calling reflect.ValueOf, and the Message.Interface method is similar to
+// calling reflect.Value.Interface.
 //
 //	      ┌── TypeDescriptor() ──┐    ┌───── Descriptor() ─────┐
 //	      │                      V    │                        V
@@ -128,7 +132,6 @@ package protoreflect
 
 import (
 	"fmt"
-	"regexp"
 	"strings"
 
 	"google.golang.org/protobuf/encoding/protowire"
@@ -408,19 +411,14 @@ type EnumRanges interface {
 	doNotImplement
 }
 
-var (
-	regexName     = regexp.MustCompile(`^[_a-zA-Z][_a-zA-Z0-9]*$`)
-	regexFullName = regexp.MustCompile(`^[_a-zA-Z][_a-zA-Z0-9]*(\.[_a-zA-Z][_a-zA-Z0-9]*)*$`)
-)
-
 // Name is the short name for a proto declaration. This is not the name
 // as used in Go source code, which might not be identical to the proto name.
 type Name string // e.g., "Kind"
 
-// IsValid reports whether n is a syntactically valid name.
+// IsValid reports whether s is a syntactically valid name.
 // An empty name is invalid.
-func (n Name) IsValid() bool {
-	return regexName.MatchString(string(n))
+func (s Name) IsValid() bool {
+	return consumeIdent(string(s)) == len(s)
 }
 
 // Names represent a list of names.
@@ -443,10 +441,42 @@ type Names interface {
 // This should not have any leading or trailing dots.
 type FullName string // e.g., "google.protobuf.Field.Kind"
 
-// IsValid reports whether n is a syntactically valid full name.
+// IsValid reports whether s is a syntactically valid full name.
 // An empty full name is invalid.
-func (n FullName) IsValid() bool {
-	return regexFullName.MatchString(string(n))
+func (s FullName) IsValid() bool {
+	i := consumeIdent(string(s))
+	if i < 0 {
+		return false
+	}
+	for len(s) > i {
+		if s[i] != '.' {
+			return false
+		}
+		i++
+		n := consumeIdent(string(s[i:]))
+		if n < 0 {
+			return false
+		}
+		i += n
+	}
+	return true
+}
+
+func consumeIdent(s string) (i int) {
+	if len(s) == 0 || !isLetter(s[i]) {
+		return -1
+	}
+	i++
+	for len(s) > i && isLetterDigit(s[i]) {
+		i++
+	}
+	return i
+}
+func isLetter(c byte) bool {
+	return c == '_' || ('a' <= c && c <= 'z') || ('A' <= c && c <= 'Z')
+}
+func isLetterDigit(c byte) bool {
+	return isLetter(c) || ('0' <= c && c <= '9')
 }
 
 // Name returns the short name, which is the last identifier segment.