Add final attribute to many classes

In some cases this can offer better optimization, via devirtualization.
And it lets the user know the class is not intended for derivation.

Some discussion in GH #402

1 files changed, 13 insertions, 13 deletions

diff --git a/src/lib/tls/tls_messages.h b/src/lib/tls/tls_messages.h
index e771bac0c..c09e4fe77 100644
--- a/src/lib/tls/tls_messages.h
+++ b/src/lib/tls/tls_messages.h
@@ -35,7 +35,7 @@ std::vector<byte> make_hello_random(RandomNumberGenerator& rng,
 /**
 * DTLS Hello Verify Request
 */
-class Hello_Verify_Request : public Handshake_Message
+class Hello_Verify_Request final : public Handshake_Message
    {
    public:
       std::vector<byte> serialize() const override;
@@ -55,7 +55,7 @@ class Hello_Verify_Request : public Handshake_Message
 /**
 * Client Hello Message
 */
-class Client_Hello : public Handshake_Message
+class Client_Hello final : public Handshake_Message
    {
    public:
       Handshake_Type type() const override { return CLIENT_HELLO; }
@@ -210,7 +210,7 @@ class Client_Hello : public Handshake_Message
 /**
 * Server Hello Message
 */
-class Server_Hello : public Handshake_Message
+class Server_Hello final : public Handshake_Message
    {
    public:
       Handshake_Type type() const override { return SERVER_HELLO; }
@@ -327,7 +327,7 @@ class Server_Hello : public Handshake_Message
 /**
 * Client Key Exchange Message
 */
-class Client_Key_Exchange : public Handshake_Message
+class Client_Key_Exchange final : public Handshake_Message
    {
    public:
       Handshake_Type type() const override { return CLIENT_KEX; }
@@ -361,7 +361,7 @@ class Client_Key_Exchange : public Handshake_Message
 /**
 * Certificate Message
 */
-class Certificate : public Handshake_Message
+class Certificate final : public Handshake_Message
    {
    public:
       Handshake_Type type() const override { return CERTIFICATE; }
@@ -384,7 +384,7 @@ class Certificate : public Handshake_Message
 /**
 * Certificate Request Message
 */
-class Certificate_Req : public Handshake_Message
+class Certificate_Req final : public Handshake_Message
    {
    public:
       Handshake_Type type() const override { return CERTIFICATE_REQUEST; }
@@ -417,7 +417,7 @@ class Certificate_Req : public Handshake_Message
 /**
 * Certificate Verify Message
 */
-class Certificate_Verify : public Handshake_Message
+class Certificate_Verify final : public Handshake_Message
    {
    public:
       Handshake_Type type() const override { return CERTIFICATE_VERIFY; }
@@ -449,7 +449,7 @@ class Certificate_Verify : public Handshake_Message
 /**
 * Finished Message
 */
-class Finished : public Handshake_Message
+class Finished final : public Handshake_Message
    {
    public:
       Handshake_Type type() const override { return FINISHED; }
@@ -474,7 +474,7 @@ class Finished : public Handshake_Message
 /**
 * Hello Request Message
 */
-class Hello_Request : public Handshake_Message
+class Hello_Request final : public Handshake_Message
    {
    public:
       Handshake_Type type() const override { return HELLO_REQUEST; }
@@ -488,7 +488,7 @@ class Hello_Request : public Handshake_Message
 /**
 * Server Key Exchange Message
 */
-class Server_Key_Exchange : public Handshake_Message
+class Server_Key_Exchange final : public Handshake_Message
    {
    public:
       Handshake_Type type() const override { return SERVER_KEX; }
@@ -533,7 +533,7 @@ class Server_Key_Exchange : public Handshake_Message
 /**
 * Server Hello Done Message
 */
-class Server_Hello_Done : public Handshake_Message
+class Server_Hello_Done final : public Handshake_Message
    {
    public:
       Handshake_Type type() const override { return SERVER_HELLO_DONE; }
@@ -547,7 +547,7 @@ class Server_Hello_Done : public Handshake_Message
 /**
 * New Session Ticket Message
 */
-class New_Session_Ticket : public Handshake_Message
+class New_Session_Ticket final : public Handshake_Message
    {
    public:
       Handshake_Type type() const override { return NEW_SESSION_TICKET; }
@@ -574,7 +574,7 @@ class New_Session_Ticket : public Handshake_Message
 /**
 * Change Cipher Spec
 */
-class Change_Cipher_Spec : public Handshake_Message
+class Change_Cipher_Spec final : public Handshake_Message
    {
    public:
       Handshake_Type type() const override { return HANDSHAKE_CCS; }