From 364e2d25c08f2a323071c00ab0d5d502276852e6 Mon Sep 17 00:00:00 2001
From: Oliver Hamlet <git@ortham.net>
Date: Thu, 13 Nov 2025 21:54:21 +0000
Subject: [PATCH] Prevent copy & move of abstract classes

To prevent slicing, following C++ Core Guidelines C.21 and C.67.
---
 cpp/include/loot/database_interface.h | 7 +++++++
 cpp/include/loot/game_interface.h     | 7 +++++++
 cpp/include/loot/plugin_interface.h   | 7 +++++++
 3 files changed, 21 insertions(+)

diff --git a/cpp/include/loot/database_interface.h b/cpp/include/loot/database_interface.h
index f5f43366..69242714 100644
--- a/cpp/include/loot/database_interface.h
+++ b/cpp/include/loot/database_interface.h
@@ -39,8 +39,15 @@ namespace loot {
 /** @brief The interface provided by API's database handle. */
 class DatabaseInterface {
 public:
+  DatabaseInterface() = default;
+  DatabaseInterface(const DatabaseInterface&) = delete;
+  DatabaseInterface(DatabaseInterface&&) = delete;
+
   virtual ~DatabaseInterface() = default;
 
+  DatabaseInterface& operator=(const DatabaseInterface&) = delete;
+  DatabaseInterface& operator=(DatabaseInterface&&) = delete;
+
   /**
    * @name Data Reading & Writing
    * @{
diff --git a/cpp/include/loot/game_interface.h b/cpp/include/loot/game_interface.h
index 71238b84..49d7708e 100644
--- a/cpp/include/loot/game_interface.h
+++ b/cpp/include/loot/game_interface.h
@@ -32,8 +32,15 @@ namespace loot {
 /** @brief The interface provided for accessing game-specific functionality. */
 class GameInterface {
 public:
+  GameInterface() = default;
+  GameInterface(const GameInterface&) = delete;
+  GameInterface(GameInterface&&) = delete;
+
   virtual ~GameInterface() = default;
 
+  GameInterface& operator=(const GameInterface&) = delete;
+  GameInterface& operator=(GameInterface&&) = delete;
+
   /**
    * @brief Get the game's type.
    * @returns The game's type.
diff --git a/cpp/include/loot/plugin_interface.h b/cpp/include/loot/plugin_interface.h
index dc152a01..d3bfec0b 100644
--- a/cpp/include/loot/plugin_interface.h
+++ b/cpp/include/loot/plugin_interface.h
@@ -40,8 +40,15 @@ namespace loot {
  */
 class PluginInterface {
 public:
+  PluginInterface() = default;
+  PluginInterface(const PluginInterface&) = delete;
+  PluginInterface(PluginInterface&&) = delete;
+
   virtual ~PluginInterface() = default;
 
+  PluginInterface& operator=(const PluginInterface&) = delete;
+  PluginInterface& operator=(PluginInterface&&) = delete;
+
   /**
    * Get the plugin's filename.
    * @return The plugin filename. If the plugin was ghosted when it was loaded,