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- /* SPDX-License-Identifier: GPL-2.0 */
- /*
- * Copyright (C) 2019-2022 Red Hat, Inc. Daniel Bristot de Oliveira <[email protected]>
- *
- * Deterministic automata helper functions, to be used with the automata
- * models in C generated by the dot2k tool.
- */
- /*
- * DECLARE_AUTOMATA_HELPERS - define a set of helper functions for automata
- *
- * Define a set of helper functions for automata. The 'name' argument is used
- * as suffix for the functions and data. These functions will handle automaton
- * with data type 'type'.
- */
- #define DECLARE_AUTOMATA_HELPERS(name, type) \
- \
- /* \
- * model_get_state_name_##name - return the (string) name of the given state \
- */ \
- static char *model_get_state_name_##name(enum states_##name state) \
- { \
- if ((state < 0) || (state >= state_max_##name)) \
- return "INVALID"; \
- \
- return automaton_##name.state_names[state]; \
- } \
- \
- /* \
- * model_get_event_name_##name - return the (string) name of the given event \
- */ \
- static char *model_get_event_name_##name(enum events_##name event) \
- { \
- if ((event < 0) || (event >= event_max_##name)) \
- return "INVALID"; \
- \
- return automaton_##name.event_names[event]; \
- } \
- \
- /* \
- * model_get_initial_state_##name - return the automaton's initial state \
- */ \
- static inline type model_get_initial_state_##name(void) \
- { \
- return automaton_##name.initial_state; \
- } \
- \
- /* \
- * model_get_next_state_##name - process an automaton event occurrence \
- * \
- * Given the current state (curr_state) and the event (event), returns \
- * the next state, or INVALID_STATE in case of error. \
- */ \
- static inline type model_get_next_state_##name(enum states_##name curr_state, \
- enum events_##name event) \
- { \
- if ((curr_state < 0) || (curr_state >= state_max_##name)) \
- return INVALID_STATE; \
- \
- if ((event < 0) || (event >= event_max_##name)) \
- return INVALID_STATE; \
- \
- return automaton_##name.function[curr_state][event]; \
- } \
- \
- /* \
- * model_is_final_state_##name - check if the given state is a final state \
- */ \
- static inline bool model_is_final_state_##name(enum states_##name state) \
- { \
- if ((state < 0) || (state >= state_max_##name)) \
- return 0; \
- \
- return automaton_##name.final_states[state]; \
- }
|
