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+/*
+Copyright 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/>.
+*/
+
+#pragma once
+
+#include <stdint.h>
+#include "keyboard.h"
+#include "action.h"
+
+#ifdef DYNAMIC_KEYMAP_ENABLE
+# ifndef DYNAMIC_KEYMAP_LAYER_COUNT
+# define DYNAMIC_KEYMAP_LAYER_COUNT 4
+# endif
+# if DYNAMIC_KEYMAP_LAYER_COUNT <= 8
+# ifndef LAYER_STATE_8BIT
+# define LAYER_STATE_8BIT
+# endif
+# elif DYNAMIC_KEYMAP_LAYER_COUNT <= 16
+# ifndef LAYER_STATE_16BIT
+# define LAYER_STATE_16BIT
+# endif
+# else
+# ifndef LAYER_STATE_32BIT
+# define LAYER_STATE_32BIT
+# endif
+# endif
+#endif
+
+#if !defined(LAYER_STATE_8BIT) && !defined(LAYER_STATE_16BIT) && !defined(LAYER_STATE_32BIT)
+# define LAYER_STATE_32BIT
+#endif
+
+#if defined(LAYER_STATE_8BIT)
+typedef uint8_t layer_state_t;
+# define MAX_LAYER_BITS 3
+# ifndef MAX_LAYER
+# define MAX_LAYER 8
+# endif
+# define get_highest_layer(state) biton(state)
+#elif defined(LAYER_STATE_16BIT)
+typedef uint16_t layer_state_t;
+# define MAX_LAYER_BITS 4
+# ifndef MAX_LAYER
+# define MAX_LAYER 16
+# endif
+# define get_highest_layer(state) biton16(state)
+#elif defined(LAYER_STATE_32BIT)
+typedef uint32_t layer_state_t;
+# define MAX_LAYER_BITS 5
+# ifndef MAX_LAYER
+# define MAX_LAYER 32
+# endif
+# define get_highest_layer(state) biton32(state)
+#else
+# error Layer Mask size not specified. HOW?!
+#endif
+
+/*
+ * Default Layer
+ */
+extern layer_state_t default_layer_state;
+void default_layer_debug(void);
+void default_layer_set(layer_state_t state);
+
+__attribute__((weak)) layer_state_t default_layer_state_set_kb(layer_state_t state);
+__attribute__((weak)) layer_state_t default_layer_state_set_user(layer_state_t state);
+
+#ifndef NO_ACTION_LAYER
+/* bitwise operation */
+void default_layer_or(layer_state_t state);
+void default_layer_and(layer_state_t state);
+void default_layer_xor(layer_state_t state);
+#else
+# define default_layer_or(state)
+# define default_layer_and(state)
+# define default_layer_xor(state)
+#endif
+
+/*
+ * Keymap Layer
+ */
+#ifndef NO_ACTION_LAYER
+extern layer_state_t layer_state;
+
+void layer_state_set(layer_state_t state);
+bool layer_state_is(uint8_t layer);
+bool layer_state_cmp(layer_state_t layer1, uint8_t layer2);
+
+void layer_debug(void);
+void layer_clear(void);
+void layer_move(uint8_t layer);
+void layer_on(uint8_t layer);
+void layer_off(uint8_t layer);
+void layer_invert(uint8_t layer);
+/* bitwise operation */
+void layer_or(layer_state_t state);
+void layer_and(layer_state_t state);
+void layer_xor(layer_state_t state);
+layer_state_t layer_state_set_user(layer_state_t state);
+layer_state_t layer_state_set_kb(layer_state_t state);
+#else
+# define layer_state 0
+
+# define layer_state_set(layer)
+# define layer_state_is(layer) (layer == 0)
+# define layer_state_cmp(state, layer) (state == 0 ? layer == 0 : (state & (layer_state_t)1 << layer) != 0)
+
+# define layer_debug()
+# define layer_clear()
+# define layer_move(layer) (void)layer
+# define layer_on(layer) (void)layer
+# define layer_off(layer) (void)layer
+# define layer_invert(layer) (void)layer
+# define layer_or(state) (void)state
+# define layer_and(state) (void)state
+# define layer_xor(state) (void)state
+# define layer_state_set_kb(state) (void)state
+# define layer_state_set_user(state) (void)state
+#endif
+
+/* pressed actions cache */
+#if !defined(NO_ACTION_LAYER) && !defined(STRICT_LAYER_RELEASE)
+
+void update_source_layers_cache(keypos_t key, uint8_t layer);
+uint8_t read_source_layers_cache(keypos_t key);
+#endif
+action_t store_or_get_action(bool pressed, keypos_t key);
+
+/* return the topmost non-transparent layer currently associated with key */
+uint8_t layer_switch_get_layer(keypos_t key);
+
+/* return action depending on current layer status */
+action_t layer_switch_get_action(keypos_t key);