From b31426252ed379937132ed7d2baf84a677123b5b Mon Sep 17 00:00:00 2001
From: Joel Challis <git@zvecr.com>
Date: Wed, 1 Nov 2023 02:11:42 +0000
Subject: [PATCH] Generate switch statement helpers for keycode ranges (#20059)

---
 lib/python/qmk/cli/generate/keycodes.py |  8 ++++++++
 quantum/keycodes.h                      | 22 ++++++++++++++++++++++
 quantum/keymap_common.c                 | 10 +++++-----
 3 files changed, 35 insertions(+), 5 deletions(-)

diff --git a/lib/python/qmk/cli/generate/keycodes.py b/lib/python/qmk/cli/generate/keycodes.py
index ed8b6827bd..719fced5d5 100644
--- a/lib/python/qmk/cli/generate/keycodes.py
+++ b/lib/python/qmk/cli/generate/keycodes.py
@@ -94,6 +94,14 @@ def _generate_helpers(lines, keycodes):
         hi = keycodes["keycodes"][f'0x{codes[1]:04X}']['key']
         lines.append(f'#define IS_{ _translate_group(group).upper() }_KEYCODE(code) ((code) >= {lo} && (code) <= {hi})')
 
+    lines.append('')
+    lines.append('// Switch statement Helpers')
+    for group, codes in temp.items():
+        lo = keycodes["keycodes"][f'0x{codes[0]:04X}']['key']
+        hi = keycodes["keycodes"][f'0x{codes[1]:04X}']['key']
+        name = f'{ _translate_group(group).upper() }_KEYCODE_RANGE'
+        lines.append(f'#define { name.ljust(35) } {lo} ... {hi}')
+
 
 def _generate_aliases(lines, keycodes):
     # Work around ChibiOS ch.h include guard
diff --git a/quantum/keycodes.h b/quantum/keycodes.h
index bbf10da36d..39fd2e2726 100644
--- a/quantum/keycodes.h
+++ b/quantum/keycodes.h
@@ -1420,3 +1420,25 @@ enum qk_keycode_defines {
 #define IS_QUANTUM_KEYCODE(code) ((code) >= QK_BOOTLOADER && (code) <= QK_ALT_REPEAT_KEY)
 #define IS_KB_KEYCODE(code) ((code) >= QK_KB_0 && (code) <= QK_KB_31)
 #define IS_USER_KEYCODE(code) ((code) >= QK_USER_0 && (code) <= QK_USER_31)
+
+// Switch statement Helpers
+#define INTERNAL_KEYCODE_RANGE              KC_NO ... KC_TRANSPARENT
+#define BASIC_KEYCODE_RANGE                 KC_A ... KC_EXSEL
+#define SYSTEM_KEYCODE_RANGE                KC_SYSTEM_POWER ... KC_SYSTEM_WAKE
+#define CONSUMER_KEYCODE_RANGE              KC_AUDIO_MUTE ... KC_LAUNCHPAD
+#define MOUSE_KEYCODE_RANGE                 KC_MS_UP ... KC_MS_ACCEL2
+#define MODIFIER_KEYCODE_RANGE              KC_LEFT_CTRL ... KC_RIGHT_GUI
+#define SWAP_HANDS_KEYCODE_RANGE            QK_SWAP_HANDS_TOGGLE ... QK_SWAP_HANDS_ONE_SHOT
+#define MAGIC_KEYCODE_RANGE                 QK_MAGIC_SWAP_CONTROL_CAPS_LOCK ... QK_MAGIC_TOGGLE_ESCAPE_CAPS_LOCK
+#define MIDI_KEYCODE_RANGE                  QK_MIDI_ON ... QK_MIDI_PITCH_BEND_UP
+#define SEQUENCER_KEYCODE_RANGE             QK_SEQUENCER_ON ... QK_SEQUENCER_STEPS_CLEAR
+#define JOYSTICK_KEYCODE_RANGE              QK_JOYSTICK_BUTTON_0 ... QK_JOYSTICK_BUTTON_31
+#define PROGRAMMABLE_BUTTON_KEYCODE_RANGE   QK_PROGRAMMABLE_BUTTON_1 ... QK_PROGRAMMABLE_BUTTON_32
+#define AUDIO_KEYCODE_RANGE                 QK_AUDIO_ON ... QK_AUDIO_VOICE_PREVIOUS
+#define STENO_KEYCODE_RANGE                 QK_STENO_BOLT ... QK_STENO_COMB_MAX
+#define MACRO_KEYCODE_RANGE                 QK_MACRO_0 ... QK_MACRO_31
+#define BACKLIGHT_KEYCODE_RANGE             QK_BACKLIGHT_ON ... QK_BACKLIGHT_TOGGLE_BREATHING
+#define RGB_KEYCODE_RANGE                   RGB_TOG ... RGB_MODE_TWINKLE
+#define QUANTUM_KEYCODE_RANGE               QK_BOOTLOADER ... QK_ALT_REPEAT_KEY
+#define KB_KEYCODE_RANGE                    QK_KB_0 ... QK_KB_31
+#define USER_KEYCODE_RANGE                  QK_USER_0 ... QK_USER_31
diff --git a/quantum/keymap_common.c b/quantum/keymap_common.c
index 9a67fad278..91e47a72ee 100644
--- a/quantum/keymap_common.c
+++ b/quantum/keymap_common.c
@@ -59,19 +59,19 @@ action_t action_for_keycode(uint16_t keycode) {
     (void)mod;
 
     switch (keycode) {
-        case KC_A ... KC_EXSEL:
-        case KC_LEFT_CTRL ... KC_RIGHT_GUI:
+        case BASIC_KEYCODE_RANGE:
+        case MODIFIER_KEYCODE_RANGE:
             action.code = ACTION_KEY(keycode);
             break;
 #ifdef EXTRAKEY_ENABLE
-        case KC_SYSTEM_POWER ... KC_SYSTEM_WAKE:
+        case SYSTEM_KEYCODE_RANGE:
             action.code = ACTION_USAGE_SYSTEM(KEYCODE2SYSTEM(keycode));
             break;
-        case KC_AUDIO_MUTE ... KC_LAUNCHPAD:
+        case CONSUMER_KEYCODE_RANGE:
             action.code = ACTION_USAGE_CONSUMER(KEYCODE2CONSUMER(keycode));
             break;
 #endif
-        case KC_MS_UP ... KC_MS_ACCEL2:
+        case MOUSE_KEYCODE_RANGE:
             action.code = ACTION_MOUSEKEY(keycode);
             break;
         case KC_TRANSPARENT: