add sdl3 shim generator

Scripts/generate-sdl3-shim.sh

@@ -0,0 +1,15 @@
+#!/bin/sh
+
+cd "$(dirname "${0}")/.."
+
+echo "#pragma once"
+echo ""
+echo "#include <SDL3/SDL.h>"
+echo ""
+grep -r 'UINT64_C' Frameworks/SDL3.xcframework/macos-arm64_x86_64/SDL3.framework/Versions/A/Headers | awk -F ':' '{print $2}' | grep -F '#define' | grep "UINT64_C(0x" | while read -r LINE
+do
+  MACRO_NAME="$(echo "${LINE}" | awk '{print $2}')"
+  ACTUAL_STUFF="$(echo "${LINE}" | awk -F 'SDL_UINT64_C\\(' '{print $2}' | sed 's/)/UL/')"
+  echo "#undef ${MACRO_NAME}"
+  echo "#define ${MACRO_NAME} ${ACTUAL_STUFF}"
+done

Sources/SDLSwift/shim.h

@@ -1,3 +1,56 @@
 #pragma once
 
 #include <SDL3/SDL.h>
+
+#undef SDL_MAX_UINT64
+#define SDL_MAX_UINT64 0xFFFFFFFFFFFFFFFFUL   /* 18446744073709551615 */
+#undef SDL_MIN_UINT64
+#define SDL_MIN_UINT64 0x0000000000000000UL   /* 0 */
+#undef SDL_WINDOW_FULLSCREEN
+#define SDL_WINDOW_FULLSCREEN 0x0000000000000001UL    /**< window is in fullscreen mode */
+#undef SDL_WINDOW_OPENGL
+#define SDL_WINDOW_OPENGL 0x0000000000000002UL    /**< window usable with OpenGL context */
+#undef SDL_WINDOW_OCCLUDED
+#define SDL_WINDOW_OCCLUDED 0x0000000000000004UL    /**< window is occluded */
+#undef SDL_WINDOW_HIDDEN
+#define SDL_WINDOW_HIDDEN 0x0000000000000008UL    /**< window is neither mapped onto the desktop nor shown in the taskbar/dock/window list; SDL_ShowWindow() is required for it to become visible */
+#undef SDL_WINDOW_BORDERLESS
+#define SDL_WINDOW_BORDERLESS 0x0000000000000010UL    /**< no window decoration */
+#undef SDL_WINDOW_RESIZABLE
+#define SDL_WINDOW_RESIZABLE 0x0000000000000020UL    /**< window can be resized */
+#undef SDL_WINDOW_MINIMIZED
+#define SDL_WINDOW_MINIMIZED 0x0000000000000040UL    /**< window is minimized */
+#undef SDL_WINDOW_MAXIMIZED
+#define SDL_WINDOW_MAXIMIZED 0x0000000000000080UL    /**< window is maximized */
+#undef SDL_WINDOW_MOUSE_GRABBED
+#define SDL_WINDOW_MOUSE_GRABBED 0x0000000000000100UL    /**< window has grabbed mouse input */
+#undef SDL_WINDOW_INPUT_FOCUS
+#define SDL_WINDOW_INPUT_FOCUS 0x0000000000000200UL    /**< window has input focus */
+#undef SDL_WINDOW_MOUSE_FOCUS
+#define SDL_WINDOW_MOUSE_FOCUS 0x0000000000000400UL    /**< window has mouse focus */
+#undef SDL_WINDOW_EXTERNAL
+#define SDL_WINDOW_EXTERNAL 0x0000000000000800UL    /**< window not created by SDL */
+#undef SDL_WINDOW_MODAL
+#define SDL_WINDOW_MODAL 0x0000000000001000UL    /**< window is modal */
+#undef SDL_WINDOW_HIGH_PIXEL_DENSITY
+#define SDL_WINDOW_HIGH_PIXEL_DENSITY 0x0000000000002000UL    /**< window uses high pixel density back buffer if possible */
+#undef SDL_WINDOW_MOUSE_CAPTURE
+#define SDL_WINDOW_MOUSE_CAPTURE 0x0000000000004000UL    /**< window has mouse captured (unrelated to MOUSE_GRABBED) */
+#undef SDL_WINDOW_ALWAYS_ON_TOP
+#define SDL_WINDOW_ALWAYS_ON_TOP 0x0000000000008000UL    /**< window should always be above others */
+#undef SDL_WINDOW_UTILITY
+#define SDL_WINDOW_UTILITY 0x0000000000020000UL    /**< window should be treated as a utility window, not showing in the task bar and window list */
+#undef SDL_WINDOW_TOOLTIP
+#define SDL_WINDOW_TOOLTIP 0x0000000000040000UL    /**< window should be treated as a tooltip and does not get mouse or keyboard focus, requires a parent window */
+#undef SDL_WINDOW_POPUP_MENU
+#define SDL_WINDOW_POPUP_MENU 0x0000000000080000UL    /**< window should be treated as a popup menu, requires a parent window */
+#undef SDL_WINDOW_KEYBOARD_GRABBED
+#define SDL_WINDOW_KEYBOARD_GRABBED 0x0000000000100000UL    /**< window has grabbed keyboard input */
+#undef SDL_WINDOW_VULKAN
+#define SDL_WINDOW_VULKAN 0x0000000010000000UL    /**< window usable for Vulkan surface */
+#undef SDL_WINDOW_METAL
+#define SDL_WINDOW_METAL 0x0000000020000000UL    /**< window usable for Metal view */
+#undef SDL_WINDOW_TRANSPARENT
+#define SDL_WINDOW_TRANSPARENT 0x0000000040000000UL    /**< window with transparent buffer */
+#undef SDL_WINDOW_NOT_FOCUSABLE
+#define SDL_WINDOW_NOT_FOCUSABLE 0x0000000080000000UL    /**< window should not be focusable */