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+#pragma once
+/*
+ Copyright 2018-2022 Eric Gebhart <e.a.gebhart@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 QMK_KEYBOARD_H
+
+// Represents the four states an n-shot key can be in (from users/callum)
+typedef enum {
+ os_up_unqueued,
+ os_up_queued,
+ os_down_unused,
+ os_down_used,
+} oneshot_state;
+
+typedef struct {
+ uint16_t trigger;
+ uint16_t mod;
+ uint8_t max_count;
+ oneshot_state state;
+ uint8_t count;
+} nshot_state_t;
+
+extern nshot_state_t nshot_states[];
+extern uint8_t NUM_NSHOT_STATES;
+
+
+// Keys that should cancel the n-shot mod if tapped
+bool is_nshot_cancel_key(uint16_t keycode);
+
+// Keys that should not count towards n-shot usage (e.g., layer toggles)
+bool is_nshot_ignored_key(uint16_t keycode);