Migrate platform independent code from tmk_core -> quantum (#13673)

* Migrate action|keyboard|keycode|eeconfig from tmk_core -> quantum

1 files changed, 1126 insertions, 0 deletions

diff --git a/quantum/action.c b/quantum/action.c
new file mode 100644
index 000000000..d19fd2a04
--- /dev/null
+++ b/quantum/action.c
@@ -0,0 +1,1126 @@
+/*
+Copyright 2012,2013 Jun Wako <wakojun@gmail.com>
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+#include "host.h"
+#include "keycode.h"
+#include "keyboard.h"
+#include "mousekey.h"
+#include "command.h"
+#include "led.h"
+#include "action_layer.h"
+#include "action_tapping.h"
+#include "action_macro.h"
+#include "action_util.h"
+#include "action.h"
+#include "wait.h"
+
+#ifdef BACKLIGHT_ENABLE
+#    include "backlight.h"
+#endif
+
+#ifdef DEBUG_ACTION
+#    include "debug.h"
+#else
+#    include "nodebug.h"
+#endif
+
+#ifdef POINTING_DEVICE_ENABLE
+#    include "pointing_device.h"
+#endif
+
+int tp_buttons;
+
+#if defined(RETRO_TAPPING) || defined(RETRO_TAPPING_PER_KEY)
+int retro_tapping_counter = 0;
+#endif
+
+#ifdef IGNORE_MOD_TAP_INTERRUPT_PER_KEY
+__attribute__((weak)) bool get_ignore_mod_tap_interrupt(uint16_t keycode, keyrecord_t *record) { return false; }
+#endif
+
+#ifdef RETRO_TAPPING_PER_KEY
+__attribute__((weak)) bool get_retro_tapping(uint16_t keycode, keyrecord_t *record) { return false; }
+#endif
+
+__attribute__((weak)) bool pre_process_record_quantum(keyrecord_t *record) { return true; }
+
+#ifndef TAP_CODE_DELAY
+#    define TAP_CODE_DELAY 0
+#endif
+#ifndef TAP_HOLD_CAPS_DELAY
+#    define TAP_HOLD_CAPS_DELAY 80
+#endif
+/** \brief Called to execute an action.
+ *
+ * FIXME: Needs documentation.
+ */
+void action_exec(keyevent_t event) {
+    if (!IS_NOEVENT(event)) {
+        dprint("\n---- action_exec: start -----\n");
+        dprint("EVENT: ");
+        debug_event(event);
+        dprintln();
+#if defined(RETRO_TAPPING) || defined(RETRO_TAPPING_PER_KEY)
+        retro_tapping_counter++;
+#endif
+    }
+
+    if (event.pressed) {
+        // clear the potential weak mods left by previously pressed keys
+        clear_weak_mods();
+    }
+
+#ifdef SWAP_HANDS_ENABLE
+    if (!IS_NOEVENT(event)) {
+        process_hand_swap(&event);
+    }
+#endif
+
+    keyrecord_t record = {.event = event};
+
+#ifndef NO_ACTION_ONESHOT
+#    if (defined(ONESHOT_TIMEOUT) && (ONESHOT_TIMEOUT > 0))
+    if (has_oneshot_layer_timed_out()) {
+        clear_oneshot_layer_state(ONESHOT_OTHER_KEY_PRESSED);
+    }
+    if (has_oneshot_mods_timed_out()) {
+        clear_oneshot_mods();
+    }
+#        ifdef SWAP_HANDS_ENABLE
+    if (has_oneshot_swaphands_timed_out()) {
+        clear_oneshot_swaphands();
+    }
+#        endif
+#    endif
+#endif
+
+#ifndef NO_ACTION_TAPPING
+    if (IS_NOEVENT(record.event) || pre_process_record_quantum(&record)) {
+        action_tapping_process(record);
+    }
+#else
+    if (IS_NOEVENT(record.event) || pre_process_record_quantum(&record)) {
+        process_record(&record);
+    }
+    if (!IS_NOEVENT(record.event)) {
+        dprint("processed: ");
+        debug_record(record);
+        dprintln();
+    }
+#endif
+}
+
+#ifdef SWAP_HANDS_ENABLE
+bool swap_hands = false;
+bool swap_held  = false;
+
+/** \brief Process Hand Swap
+ *
+ * FIXME: Needs documentation.
+ */
+void process_hand_swap(keyevent_t *event) {
+    static swap_state_row_t swap_state[MATRIX_ROWS];
+
+    keypos_t         pos     = event->key;
+    swap_state_row_t col_bit = (swap_state_row_t)1 << pos.col;
+    bool             do_swap = event->pressed ? swap_hands : swap_state[pos.row] & (col_bit);
+
+    if (do_swap) {
+        event->key.row = pgm_read_byte(&hand_swap_config[pos.row][pos.col].row);
+        event->key.col = pgm_read_byte(&hand_swap_config[pos.row][pos.col].col);
+        swap_state[pos.row] |= col_bit;
+    } else {
+        swap_state[pos.row] &= ~(col_bit);
+    }
+}
+#endif
+
+#if !defined(NO_ACTION_LAYER) && !defined(STRICT_LAYER_RELEASE)
+bool disable_action_cache = false;
+
+void process_record_nocache(keyrecord_t *record) {
+    disable_action_cache = true;
+    process_record(record);
+    disable_action_cache = false;
+}
+#else
+void process_record_nocache(keyrecord_t *record) { process_record(record); }
+#endif
+
+__attribute__((weak)) bool process_record_quantum(keyrecord_t *record) { return true; }
+
+__attribute__((weak)) void post_process_record_quantum(keyrecord_t *record) {}
+
+#ifndef NO_ACTION_TAPPING
+/** \brief Allows for handling tap-hold actions immediately instead of waiting for TAPPING_TERM or another keypress.
+ *
+ * FIXME: Needs documentation.
+ */
+void process_record_tap_hint(keyrecord_t *record) {
+    action_t action = layer_switch_get_action(record->event.key);
+
+    switch (action.kind.id) {
+#    ifdef SWAP_HANDS_ENABLE
+        case ACT_SWAP_HANDS:
+            switch (action.swap.code) {
+                case OP_SH_ONESHOT:
+                    break;
+                case OP_SH_TAP_TOGGLE:
+                default:
+                    swap_hands = !swap_hands;
+                    swap_held  = true;
+            }
+            break;
+#    endif
+    }
+}
+#endif
+
+/** \brief Take a key event (key press or key release) and processes it.
+ *
+ * FIXME: Needs documentation.
+ */
+void process_record(keyrecord_t *record) {
+    if (IS_NOEVENT(record->event)) {
+        return;
+    }
+
+    if (!process_record_quantum(record)) {
+#ifndef NO_ACTION_ONESHOT
+        if (is_oneshot_layer_active() && record->event.pressed) {
+            clear_oneshot_layer_state(ONESHOT_OTHER_KEY_PRESSED);
+        }
+#endif
+        return;
+    }
+
+    process_record_handler(record);
+    post_process_record_quantum(record);
+}
+
+void process_record_handler(keyrecord_t *record) {
+#ifdef COMBO_ENABLE
+    action_t action;
+    if (record->keycode) {
+        action = action_for_keycode(record->keycode);
+    } else {
+        action = store_or_get_action(record->event.pressed, record->event.key);
+    }
+#else
+    action_t action = store_or_get_action(record->event.pressed, record->event.key);
+#endif
+    dprint("ACTION: ");
+    debug_action(action);
+#ifndef NO_ACTION_LAYER
+    dprint(" layer_state: ");
+    layer_debug();
+    dprint(" default_layer_state: ");
+    default_layer_debug();
+#endif
+    dprintln();
+
+    process_action(record, action);
+}
+
+#if defined(PS2_MOUSE_ENABLE) || defined(POINTING_DEVICE_ENABLE)
+void register_button(bool pressed, enum mouse_buttons button) {
+#    ifdef PS2_MOUSE_ENABLE
+    tp_buttons = pressed ? tp_buttons | button : tp_buttons & ~button;
+#    endif
+#    ifdef POINTING_DEVICE_ENABLE
+    report_mouse_t currentReport = pointing_device_get_report();
+    currentReport.buttons        = pressed ? currentReport.buttons | button : currentReport.buttons & ~button;
+    pointing_device_set_report(currentReport);
+#    endif
+}
+#endif
+
+/** \brief Take an action and processes it.
+ *
+ * FIXME: Needs documentation.
+ */
+void process_action(keyrecord_t *record, action_t action) {
+    keyevent_t event = record->event;
+#ifndef NO_ACTION_TAPPING
+    uint8_t tap_count = record->tap.count;
+#endif
+
+#ifndef NO_ACTION_ONESHOT
+    bool do_release_oneshot = false;
+    // notice we only clear the one shot layer if the pressed key is not a modifier.
+    if (is_oneshot_layer_active() && event.pressed && (action.kind.id == ACT_USAGE || !IS_MOD(action.key.code))
+#    ifdef SWAP_HANDS_ENABLE
+        && !(action.kind.id == ACT_SWAP_HANDS && action.swap.code == OP_SH_ONESHOT)
+#    endif
+    ) {
+        clear_oneshot_layer_state(ONESHOT_OTHER_KEY_PRESSED);
+        do_release_oneshot = !is_oneshot_layer_active();
+    }
+#endif
+
+    switch (action.kind.id) {
+        /* Key and Mods */
+        case ACT_LMODS:
+        case ACT_RMODS: {
+            uint8_t mods = (action.kind.id == ACT_LMODS) ? action.key.mods : action.key.mods << 4;
+            if (event.pressed) {
+                if (mods) {
+                    if (IS_MOD(action.key.code) || action.key.code == KC_NO) {
+                        // e.g. LSFT(KC_LGUI): we don't want the LSFT to be weak as it would make it useless.
+                        // This also makes LSFT(KC_LGUI) behave exactly the same as LGUI(KC_LSFT).
+                        // Same applies for some keys like KC_MEH which are declared as MEH(KC_NO).
+                        add_mods(mods);
+                    } else {
+                        add_weak_mods(mods);
+                    }
+                    send_keyboard_report();
+                }
+                register_code(action.key.code);
+            } else {
+                unregister_code(action.key.code);
+                if (mods) {
+                    if (IS_MOD(action.key.code) || action.key.code == KC_NO) {
+                        del_mods(mods);
+                    } else {
+                        del_weak_mods(mods);
+                    }
+                    send_keyboard_report();
+                }
+            }
+        } break;
+#ifndef NO_ACTION_TAPPING
+        case ACT_LMODS_TAP:
+        case ACT_RMODS_TAP: {
+            uint8_t mods = (action.kind.id == ACT_LMODS_TAP) ? action.key.mods : action.key.mods << 4;
+            switch (action.layer_tap.code) {
+#    ifndef NO_ACTION_ONESHOT
+                case MODS_ONESHOT:
+                    // Oneshot modifier
+                    if (event.pressed) {
+                        if (tap_count == 0) {
+                            dprint("MODS_TAP: Oneshot: 0\n");
+                            register_mods(mods | get_oneshot_mods());
+                        } else if (tap_count == 1) {
+                            dprint("MODS_TAP: Oneshot: start\n");
+                            set_oneshot_mods(mods | get_oneshot_mods());
+#        if defined(ONESHOT_TAP_TOGGLE) && ONESHOT_TAP_TOGGLE > 1
+                        } else if (tap_count == ONESHOT_TAP_TOGGLE) {
+                            dprint("MODS_TAP: Toggling oneshot");
+                            clear_oneshot_mods();
+                            set_oneshot_locked_mods(mods);
+                            register_mods(mods);
+#        endif
+                        } else {
+                            register_mods(mods | get_oneshot_mods());
+                        }
+                    } else {
+                        if (tap_count == 0) {
+                            clear_oneshot_mods();
+                            unregister_mods(mods);
+                        } else if (tap_count == 1) {
+                            // Retain Oneshot mods
+#        if defined(ONESHOT_TAP_TOGGLE) && ONESHOT_TAP_TOGGLE > 1
+                            if (mods & get_mods()) {
+                                clear_oneshot_locked_mods();
+                                clear_oneshot_mods();
+                                unregister_mods(mods);
+                            }
+                        } else if (tap_count == ONESHOT_TAP_TOGGLE) {
+                            // Toggle Oneshot Layer
+#        endif
+                        } else {
+                            clear_oneshot_mods();
+                            unregister_mods(mods);
+                        }
+                    }
+                    break;
+#    endif
+                case MODS_TAP_TOGGLE:
+                    if (event.pressed) {
+                        if (tap_count <= TAPPING_TOGGLE) {
+                            register_mods(mods);
+                        }
+                    } else {
+                        if (tap_count < TAPPING_TOGGLE) {
+                            unregister_mods(mods);
+                        }
+                    }
+                    break;
+                default:
+                    if (event.pressed) {
+                        if (tap_count > 0) {
+#    if !defined(IGNORE_MOD_TAP_INTERRUPT) || defined(IGNORE_MOD_TAP_INTERRUPT_PER_KEY)
+                            if (
+#        ifdef IGNORE_MOD_TAP_INTERRUPT_PER_KEY
+                                !get_ignore_mod_tap_interrupt(get_event_keycode(record->event, false), record) &&
+#        endif
+                                record->tap.interrupted) {
+                                dprint("mods_tap: tap: cancel: add_mods\n");
+                                // ad hoc: set 0 to cancel tap
+                                record->tap.count = 0;
+                                register_mods(mods);
+                            } else
+#    endif
+                            {
+                                dprint("MODS_TAP: Tap: register_code\n");
+                                register_code(action.key.code);
+                            }
+                        } else {
+                            dprint("MODS_TAP: No tap: add_mods\n");
+                            register_mods(mods);
+                        }
+                    } else {
+                        if (tap_count > 0) {
+                            dprint("MODS_TAP: Tap: unregister_code\n");
+                            if (action.layer_tap.code == KC_CAPS) {
+                                wait_ms(TAP_HOLD_CAPS_DELAY);
+                            } else {
+                                wait_ms(TAP_CODE_DELAY);
+                            }
+                            unregister_code(action.key.code);
+                        } else {
+                            dprint("MODS_TAP: No tap: add_mods\n");
+                            unregister_mods(mods);
+                        }
+                    }
+                    break;
+            }
+        } break;
+#endif
+#ifdef EXTRAKEY_ENABLE
+        /* other HID usage */
+        case ACT_USAGE:
+            switch (action.usage.page) {
+                case PAGE_SYSTEM:
+                    if (event.pressed) {
+                        host_system_send(action.usage.code);
+                    } else {
+                        host_system_send(0);
+                    }
+                    break;
+                case PAGE_CONSUMER:
+                    if (event.pressed) {
+                        host_consumer_send(action.usage.code);
+                    } else {
+                        host_consumer_send(0);
+                    }
+                    break;
+            }
+            break;
+#endif
+#ifdef MOUSEKEY_ENABLE
+        /* Mouse key */
+        case ACT_MOUSEKEY:
+            if (event.pressed) {
+                mousekey_on(action.key.code);
+            } else {
+                mousekey_off(action.key.code);
+            }
+            switch (action.key.code) {
+#    if defined(PS2_MOUSE_ENABLE) || defined(POINTING_DEVICE_ENABLE)
+#        ifdef POINTING_DEVICE_ENABLE
+                case KC_MS_BTN1 ... KC_MS_BTN8:
+#        else
+                case KC_MS_BTN1 ... KC_MS_BTN3:
+#        endif
+                    register_button(event.pressed, MOUSE_BTN_MASK(action.key.code - KC_MS_BTN1));
+                    break;
+#    endif
+                default:
+                    mousekey_send();
+                    break;
+            }
+            break;
+#endif
+#ifndef NO_ACTION_LAYER
+        case ACT_LAYER:
+            if (action.layer_bitop.on == 0) {
+                /* Default Layer Bitwise Operation */
+                if (!event.pressed) {
+                    uint8_t       shift = action.layer_bitop.part * 4;
+                    layer_state_t bits  = ((layer_state_t)action.layer_bitop.bits) << shift;
+                    layer_state_t mask  = (action.layer_bitop.xbit) ? ~(((layer_state_t)0xf) << shift) : 0;
+                    switch (action.layer_bitop.op) {
+                        case OP_BIT_AND:
+                            default_layer_and(bits | mask);
+                            break;
+                        case OP_BIT_OR:
+                            default_layer_or(bits | mask);
+                            break;
+                        case OP_BIT_XOR:
+                            default_layer_xor(bits | mask);
+                            break;
+                        case OP_BIT_SET:
+                            default_layer_set(bits | mask);
+                            break;
+                    }
+                }
+            } else {
+                /* Layer Bitwise Operation */
+                if (event.pressed ? (action.layer_bitop.on & ON_PRESS) : (action.layer_bitop.on & ON_RELEASE)) {
+                    uint8_t       shift = action.layer_bitop.part * 4;
+                    layer_state_t bits  = ((layer_state_t)action.layer_bitop.bits) << shift;
+                    layer_state_t mask  = (action.layer_bitop.xbit) ? ~(((layer_state_t)0xf) << shift) : 0;
+                    switch (action.layer_bitop.op) {
+                        case OP_BIT_AND:
+                            layer_and(bits | mask);
+                            break;
+                        case OP_BIT_OR:
+                            layer_or(bits | mask);
+                            break;
+                        case OP_BIT_XOR:
+                            layer_xor(bits | mask);
+                            break;
+                        case OP_BIT_SET:
+                            layer_state_set(bits | mask);
+                            break;
+                    }
+                }
+            }
+            break;
+        case ACT_LAYER_MODS:
+            if (event.pressed) {
+                layer_on(action.layer_mods.layer);
+                register_mods(action.layer_mods.mods);
+            } else {
+                unregister_mods(action.layer_mods.mods);
+                layer_off(action.layer_mods.layer);
+            }
+            break;
+#    ifndef NO_ACTION_TAPPING
+        case ACT_LAYER_TAP:
+        case ACT_LAYER_TAP_EXT:
+            switch (action.layer_tap.code) {
+                case OP_TAP_TOGGLE:
+                    /* tap toggle */
+                    if (event.pressed) {
+                        if (tap_count < TAPPING_TOGGLE) {
+                            layer_invert(action.layer_tap.val);
+                        }
+                    } else {
+                        if (tap_count <= TAPPING_TOGGLE) {
+                            layer_invert(action.layer_tap.val);
+                        }
+                    }
+                    break;
+                case OP_ON_OFF:
+                    event.pressed ? layer_on(action.layer_tap.val) : layer_off(action.layer_tap.val);
+                    break;
+                case OP_OFF_ON:
+                    event.pressed ? layer_off(action.layer_tap.val) : layer_on(action.layer_tap.val);
+                    break;
+                case OP_SET_CLEAR:
+                    event.pressed ? layer_move(action.layer_tap.val) : layer_clear();
+                    break;
+#        ifndef NO_ACTION_ONESHOT
+                case OP_ONESHOT:
+                    // Oneshot modifier
+#            if defined(ONESHOT_TAP_TOGGLE) && ONESHOT_TAP_TOGGLE > 1
+                    do_release_oneshot = false;
+                    if (event.pressed) {
+                        del_mods(get_oneshot_locked_mods());
+                        if (get_oneshot_layer_state() == ONESHOT_TOGGLED) {
+                            reset_oneshot_layer();
+                            layer_off(action.layer_tap.val);
+                            break;
+                        } else if (tap_count < ONESHOT_TAP_TOGGLE) {
+                            layer_on(action.layer_tap.val);
+                            set_oneshot_layer(action.layer_tap.val, ONESHOT_START);
+                        }
+                    } else {
+                        add_mods(get_oneshot_locked_mods());
+                        if (tap_count >= ONESHOT_TAP_TOGGLE) {
+                            reset_oneshot_layer();
+                            clear_oneshot_locked_mods();
+                            set_oneshot_layer(action.layer_tap.val, ONESHOT_TOGGLED);
+                        } else {
+                            clear_oneshot_layer_state(ONESHOT_PRESSED);
+                        }
+                    }
+#            else
+                    if (event.pressed) {
+                        layer_on(action.layer_tap.val);
+                        set_oneshot_layer(action.layer_tap.val, ONESHOT_START);
+                    } else {
+                        clear_oneshot_layer_state(ONESHOT_PRESSED);
+                        if (tap_count > 1) {
+                            clear_oneshot_layer_state(ONESHOT_OTHER_KEY_PRESSED);
+                        }
+                    }
+#            endif
+                    break;
+#        endif
+                default:
+                    /* tap key */
+                    if (event.pressed) {
+                        if (tap_count > 0) {
+                            dprint("KEYMAP_TAP_KEY: Tap: register_code\n");
+                            register_code(action.layer_tap.code);
+                        } else {
+                            dprint("KEYMAP_TAP_KEY: No tap: On on press\n");
+                            layer_on(action.layer_tap.val);
+                        }
+                    } else {
+                        if (tap_count > 0) {
+                            dprint("KEYMAP_TAP_KEY: Tap: unregister_code\n");
+                            if (action.layer_tap.code == KC_CAPS) {
+                                wait_ms(TAP_HOLD_CAPS_DELAY);
+                            } else {
+                                wait_ms(TAP_CODE_DELAY);
+                            }
+                            unregister_code(action.layer_tap.code);
+                        } else {
+                            dprint("KEYMAP_TAP_KEY: No tap: Off on release\n");
+                            layer_off(action.layer_tap.val);
+                        }
+                    }
+                    break;
+            }
+            break;
+#    endif
+#endif
+            /* Extentions */
+#ifndef NO_ACTION_MACRO
+        case ACT_MACRO:
+            action_macro_play(action_get_macro(record, action.func.id, action.func.opt));
+            break;
+#endif
+#ifdef SWAP_HANDS_ENABLE
+        case ACT_SWAP_HANDS:
+            switch (action.swap.code) {
+                case OP_SH_TOGGLE:
+                    if (event.pressed) {
+                        swap_hands = !swap_hands;
+                    }
+                    break;
+                case OP_SH_ON_OFF:
+                    swap_hands = event.pressed;
+                    break;
+                case OP_SH_OFF_ON:
+                    swap_hands = !event.pressed;
+                    break;
+                case OP_SH_ON:
+                    if (!event.pressed) {
+                        swap_hands = true;
+                    }
+                    break;
+                case OP_SH_OFF:
+                    if (!event.pressed) {
+                        swap_hands = false;
+                    }
+                    break;
+#    ifndef NO_ACTION_ONESHOT
+                case OP_SH_ONESHOT:
+                    if (event.pressed) {
+                        set_oneshot_swaphands();
+                    } else {
+                        release_oneshot_swaphands();
+                    }
+                    break;
+#    endif
+
+#    ifndef NO_ACTION_TAPPING
+                case OP_SH_TAP_TOGGLE:
+                    /* tap toggle */
+
+                    if (event.pressed) {
+                        if (swap_held) {
+                            swap_held = false;
+                        } else {
+                            swap_hands = !swap_hands;
+                        }
+                    } else {
+                        if (tap_count < TAPPING_TOGGLE) {
+                            swap_hands = !swap_hands;
+                        }
+                    }
+                    break;
+                default:
+                    /* tap key */
+                    if (tap_count > 0) {
+                        if (swap_held) {
+                            swap_hands = !swap_hands;  // undo hold set up in _tap_hint
+                            swap_held  = false;
+                        }
+                        if (event.pressed) {
+                            register_code(action.swap.code);
+                        } else {
+                            wait_ms(TAP_CODE_DELAY);
+                            unregister_code(action.swap.code);
+                            *record = (keyrecord_t){};  // hack: reset tap mode
+                        }
+                    } else {
+                        if (swap_held && !event.pressed) {
+                            swap_hands = !swap_hands;  // undo hold set up in _tap_hint
+                            swap_held  = false;
+                        }
+                    }
+#    endif
+            }
+#endif
+#ifndef NO_ACTION_FUNCTION
+        case ACT_FUNCTION:
+            action_function(record, action.func.id, action.func.opt);
+            break;
+#endif
+        default:
+            break;
+    }
+
+#ifndef NO_ACTION_LAYER
+    // if this event is a layer action, update the leds
+    switch (action.kind.id) {
+        case ACT_LAYER:
+        case ACT_LAYER_MODS:
+#    ifndef NO_ACTION_TAPPING
+        case ACT_LAYER_TAP:
+        case ACT_LAYER_TAP_EXT:
+#    endif
+            led_set(host_keyboard_leds());
+            break;
+        default:
+            break;
+    }
+#endif
+
+#ifndef NO_ACTION_TAPPING
+#    if defined(RETRO_TAPPING) || defined(RETRO_TAPPING_PER_KEY)
+    if (!is_tap_action(action)) {
+        retro_tapping_counter = 0;
+    } else {
+        if (event.pressed) {
+            if (tap_count > 0) {
+                retro_tapping_counter = 0;
+            }
+        } else {
+            if (tap_count > 0) {
+                retro_tapping_counter = 0;
+            } else {
+                if (
+#        ifdef RETRO_TAPPING_PER_KEY
+                    get_retro_tapping(get_event_keycode(record->event, false), record) &&
+#        endif
+                    retro_tapping_counter == 2) {
+                    tap_code(action.layer_tap.code);
+                }
+                retro_tapping_counter = 0;
+            }
+        }
+    }
+#    endif
+#endif
+
+#ifdef SWAP_HANDS_ENABLE
+#    ifndef NO_ACTION_ONESHOT
+    if (event.pressed && !(action.kind.id == ACT_SWAP_HANDS && action.swap.code == OP_SH_ONESHOT)) {
+        use_oneshot_swaphands();
+    }
+#    endif
+#endif
+
+#ifndef NO_ACTION_ONESHOT
+    /* Because we switch layers after a oneshot event, we need to release the
+     * key before we leave the layer or no key up event will be generated.
+     */
+    if (do_release_oneshot && !(get_oneshot_layer_state() & ONESHOT_PRESSED)) {
+        record->event.pressed = false;
+        layer_on(get_oneshot_layer());
+        process_record(record);
+        layer_off(get_oneshot_layer());
+    }
+#endif
+}
+
+/** \brief Utilities for actions. (FIXME: Needs better description)
+ *
+ * FIXME: Needs documentation.
+ */
+void register_code(uint8_t code) {
+    if (code == KC_NO) {
+        return;
+    }
+#ifdef LOCKING_SUPPORT_ENABLE
+    else if (KC_LOCKING_CAPS == code) {
+#    ifdef LOCKING_RESYNC_ENABLE
+        // Resync: ignore if caps lock already is on
+        if (host_keyboard_leds() & (1 << USB_LED_CAPS_LOCK)) return;
+#    endif
+        add_key(KC_CAPSLOCK);
+        send_keyboard_report();
+        wait_ms(100);
+        del_key(KC_CAPSLOCK);
+        send_keyboard_report();
+    }
+
+    else if (KC_LOCKING_NUM == code) {
+#    ifdef LOCKING_RESYNC_ENABLE
+        if (host_keyboard_leds() & (1 << USB_LED_NUM_LOCK)) return;
+#    endif
+        add_key(KC_NUMLOCK);
+        send_keyboard_report();
+        wait_ms(100);
+        del_key(KC_NUMLOCK);
+        send_keyboard_report();
+    }
+
+    else if (KC_LOCKING_SCROLL == code) {
+#    ifdef LOCKING_RESYNC_ENABLE
+        if (host_keyboard_leds() & (1 << USB_LED_SCROLL_LOCK)) return;
+#    endif
+        add_key(KC_SCROLLLOCK);
+        send_keyboard_report();
+        wait_ms(100);
+        del_key(KC_SCROLLLOCK);
+        send_keyboard_report();
+    }
+#endif
+
+    else if IS_KEY (code) {
+        // TODO: should push command_proc out of this block?
+        if (command_proc(code)) return;
+
+#ifndef NO_ACTION_ONESHOT
+/* TODO: remove
+        if (oneshot_state.mods && !oneshot_state.disabled) {
+            uint8_t tmp_mods = get_mods();
+            add_mods(oneshot_state.mods);
+
+            add_key(code);
+            send_keyboard_report();
+
+            set_mods(tmp_mods);
+            send_keyboard_report();
+            oneshot_cancel();
+        } else
+*/
+#endif
+        {
+            // Force a new key press if the key is already pressed
+            // without this, keys with the same keycode, but different
+            // modifiers will be reported incorrectly, see issue #1708
+            if (is_key_pressed(keyboard_report, code)) {
+                del_key(code);
+                send_keyboard_report();
+            }
+            add_key(code);
+            send_keyboard_report();
+        }
+    } else if IS_MOD (code) {
+        add_mods(MOD_BIT(code));
+        send_keyboard_report();
+    }
+#ifdef EXTRAKEY_ENABLE
+    else if IS_SYSTEM (code) {
+        host_system_send(KEYCODE2SYSTEM(code));
+    } else if IS_CONSUMER (code) {
+        host_consumer_send(KEYCODE2CONSUMER(code));
+    }
+#endif
+#ifdef MOUSEKEY_ENABLE
+    else if IS_MOUSEKEY (code) {
+        mousekey_on(code);
+        mousekey_send();
+    }
+#endif
+}
+
+/** \brief Utilities for actions. (FIXME: Needs better description)
+ *
+ * FIXME: Needs documentation.
+ */
+void unregister_code(uint8_t code) {
+    if (code == KC_NO) {
+        return;
+    }
+#ifdef LOCKING_SUPPORT_ENABLE
+    else if (KC_LOCKING_CAPS == code) {
+#    ifdef LOCKING_RESYNC_ENABLE
+        // Resync: ignore if caps lock already is off
+        if (!(host_keyboard_leds() & (1 << USB_LED_CAPS_LOCK))) return;
+#    endif
+        add_key(KC_CAPSLOCK);
+        send_keyboard_report();
+        del_key(KC_CAPSLOCK);
+        send_keyboard_report();
+    }
+
+    else if (KC_LOCKING_NUM == code) {
+#    ifdef LOCKING_RESYNC_ENABLE
+        if (!(host_keyboard_leds() & (1 << USB_LED_NUM_LOCK))) return;
+#    endif
+        add_key(KC_NUMLOCK);
+        send_keyboard_report();
+        del_key(KC_NUMLOCK);
+        send_keyboard_report();
+    }
+
+    else if (KC_LOCKING_SCROLL == code) {
+#    ifdef LOCKING_RESYNC_ENABLE
+        if (!(host_keyboard_leds() & (1 << USB_LED_SCROLL_LOCK))) return;
+#    endif
+        add_key(KC_SCROLLLOCK);
+        send_keyboard_report();
+        del_key(KC_SCROLLLOCK);
+        send_keyboard_report();
+    }
+#endif
+
+    else if IS_KEY (code) {
+        del_key(code);
+        send_keyboard_report();
+    } else if IS_MOD (code) {
+        del_mods(MOD_BIT(code));
+        send_keyboard_report();
+    } else if IS_SYSTEM (code) {
+        host_system_send(0);
+    } else if IS_CONSUMER (code) {
+        host_consumer_send(0);
+    }
+#ifdef MOUSEKEY_ENABLE
+    else if IS_MOUSEKEY (code) {
+        mousekey_off(code);
+        mousekey_send();
+    }
+#endif
+}
+
+/** \brief Tap a keycode with a delay.
+ *
+ * \param code The basic keycode to tap.
+ * \param delay The amount of time in milliseconds to leave the keycode registered, before unregistering it.
+ */
+void tap_code_delay(uint8_t code, uint16_t delay) {
+    register_code(code);
+    for (uint16_t i = delay; i > 0; i--) {
+        wait_ms(1);
+    }
+    unregister_code(code);
+}
+
+/** \brief Tap a keycode with the default delay.
+ *
+ * \param code The basic keycode to tap. If `code` is `KC_CAPS`, the delay will be `TAP_HOLD_CAPS_DELAY`, otherwise `TAP_CODE_DELAY`, if defined.
+ */
+void tap_code(uint8_t code) { tap_code_delay(code, code == KC_CAPS ? TAP_HOLD_CAPS_DELAY : TAP_CODE_DELAY); }
+
+/** \brief Adds the given physically pressed modifiers and sends a keyboard report immediately.
+ *
+ * \param mods A bitfield of modifiers to register.
+ */
+void register_mods(uint8_t mods) {
+    if (mods) {
+        add_mods(mods);
+        send_keyboard_report();
+    }
+}
+
+/** \brief Removes the given physically pressed modifiers and sends a keyboard report immediately.
+ *
+ * \param mods A bitfield of modifiers to unregister.
+ */
+void unregister_mods(uint8_t mods) {
+    if (mods) {
+        del_mods(mods);
+        send_keyboard_report();
+    }
+}
+
+/** \brief Adds the given weak modifiers and sends a keyboard report immediately.
+ *
+ * \param mods A bitfield of modifiers to register.
+ */
+void register_weak_mods(uint8_t mods) {
+    if (mods) {
+        add_weak_mods(mods);
+        send_keyboard_report();
+    }
+}
+
+/** \brief Removes the given weak modifiers and sends a keyboard report immediately.
+ *
+ * \param mods A bitfield of modifiers to unregister.
+ */
+void unregister_weak_mods(uint8_t mods) {
+    if (mods) {
+        del_weak_mods(mods);
+        send_keyboard_report();
+    }
+}
+
+/** \brief Utilities for actions. (FIXME: Needs better description)
+ *
+ * FIXME: Needs documentation.
+ */
+void clear_keyboard(void) {
+    clear_mods();
+    clear_keyboard_but_mods();
+}
+
+/** \brief Utilities for actions. (FIXME: Needs better description)
+ *
+ * FIXME: Needs documentation.
+ */
+void clear_keyboard_but_mods(void) {
+    clear_keys();
+    clear_keyboard_but_mods_and_keys();
+}
+
+/** \brief Utilities for actions. (FIXME: Needs better description)
+ *
+ * FIXME: Needs documentation.
+ */
+void clear_keyboard_but_mods_and_keys() {
+#ifdef EXTRAKEY_ENABLE
+    host_system_send(0);
+    host_consumer_send(0);
+#endif
+    clear_weak_mods();
+    clear_macro_mods();
+    send_keyboard_report();
+#ifdef MOUSEKEY_ENABLE
+    mousekey_clear();
+    mousekey_send();
+#endif
+}
+
+/** \brief Utilities for actions. (FIXME: Needs better description)
+ *
+ * FIXME: Needs documentation.
+ */
+bool is_tap_key(keypos_t key) {
+    action_t action = layer_switch_get_action(key);
+    return is_tap_action(action);
+}
+
+/** \brief Utilities for actions. (FIXME: Needs better description)
+ *
+ * FIXME: Needs documentation.
+ */
+bool is_tap_record(keyrecord_t *record) {
+#ifdef COMBO_ENABLE
+    action_t action;
+    if (record->keycode) {
+        action = action_for_keycode(record->keycode);
+    } else {
+        action = layer_switch_get_action(record->event.key);
+    }
+#else
+    action_t action = layer_switch_get_action(record->event.key);
+#endif
+    return is_tap_action(action);
+}
+
+/** \brief Utilities for actions. (FIXME: Needs better description)
+ *
+ * FIXME: Needs documentation.
+ */
+bool is_tap_action(action_t action) {
+    switch (action.kind.id) {
+        case ACT_LMODS_TAP:
+        case ACT_RMODS_TAP:
+        case ACT_LAYER_TAP:
+        case ACT_LAYER_TAP_EXT:
+            switch (action.layer_tap.code) {
+                case KC_NO ... KC_RGUI:
+                case OP_TAP_TOGGLE:
+                case OP_ONESHOT:
+                    return true;
+            }
+            return false;
+        case ACT_SWAP_HANDS:
+            switch (action.swap.code) {
+                case KC_NO ... KC_RGUI:
+                case OP_SH_TAP_TOGGLE:
+                    return true;
+            }
+            return false;
+        case ACT_MACRO:
+        case ACT_FUNCTION:
+            if (action.func.opt & FUNC_TAP) {
+                return true;
+            }
+            return false;
+    }
+    return false;
+}
+
+/** \brief Debug print (FIXME: Needs better description)
+ *
+ * FIXME: Needs documentation.
+ */
+void debug_event(keyevent_t event) { dprintf("%04X%c(%u)", (event.key.row << 8 | event.key.col), (event.pressed ? 'd' : 'u'), event.time); }
+/** \brief Debug print (FIXME: Needs better description)
+ *
+ * FIXME: Needs documentation.
+ */
+void debug_record(keyrecord_t record) {
+    debug_event(record.event);
+#ifndef NO_ACTION_TAPPING
+    dprintf(":%u%c", record.tap.count, (record.tap.interrupted ? '-' : ' '));
+#endif
+}
+
+/** \brief Debug print (FIXME: Needs better description)
+ *
+ * FIXME: Needs documentation.
+ */
+void debug_action(action_t action) {
+    switch (action.kind.id) {
+        case ACT_LMODS:
+            dprint("ACT_LMODS");
+            break;
+        case ACT_RMODS:
+            dprint("ACT_RMODS");
+            break;
+        case ACT_LMODS_TAP:
+            dprint("ACT_LMODS_TAP");
+            break;
+        case ACT_RMODS_TAP:
+            dprint("ACT_RMODS_TAP");
+            break;
+        case ACT_USAGE:
+            dprint("ACT_USAGE");
+            break;
+        case ACT_MOUSEKEY:
+            dprint("ACT_MOUSEKEY");
+            break;
+        case ACT_LAYER:
+            dprint("ACT_LAYER");
+            break;
+        case ACT_LAYER_MODS:
+            dprint("ACT_LAYER_MODS");
+            break;
+        case ACT_LAYER_TAP:
+            dprint("ACT_LAYER_TAP");
+            break;
+        case ACT_LAYER_TAP_EXT:
+            dprint("ACT_LAYER_TAP_EXT");
+            break;
+        case ACT_MACRO:
+            dprint("ACT_MACRO");
+            break;
+        case ACT_FUNCTION:
+            dprint("ACT_FUNCTION");
+            break;
+        case ACT_SWAP_HANDS:
+            dprint("ACT_SWAP_HANDS");
+            break;
+        default:
+            dprint("UNKNOWN");
+            break;
+    }
+    dprintf("[%X:%02X]", action.kind.param >> 8, action.kind.param & 0xff);
+}