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/*=============================================================================*\
* File: gfsmState.h
* Author: Bryan Jurish <moocow@ling.uni-potsdam.de>
* Description: finite state machine library: states
*
* Copyright (c) 2004-2007 Bryan Jurish.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*=============================================================================*/
/** \file gfsmState.h
* \brief Automaton state definitions & utilities
*/
#ifndef _GFSM_STATE_H
#define _GFSM_STATE_H
#include <gfsmArcList.h>
/*======================================================================
* Types
*/
/// Automaton state structure
typedef struct {
guint32 is_valid : 1; /**< whether this is a valid state */
guint32 is_final : 1; /**< whether this is a final state */
guint32 is_temp : 1; /**< whether this state should be freed on gfsm_state_close() */
guint32 arc_list_temp : 1; /**< whether arc list should be freed on gfsm_state_close() */
guint32 arc_data_temp : 1; /**< whether arc data should be freed on gfsm_state_close(): implies arc_list_temp=1 */
guint32 unused : 27; /**< reserved */
gfsmArcList *arcs; /**< list of outgoing arcs */
} gfsmState;
/*======================================================================
* Methods: gfsmState: Constructors etc.
*/
/// \name gfsmState: Constructors etc.
//@{
/** Create a new state (generic) */
GFSM_INLINE
gfsmState *gfsm_state_new_full(gboolean is_final, gfsmArcList *arcs);
/** Create a new state (empty) */
GFSM_INLINE
gfsmState *gfsm_state_new(void);
/** Copy an existing state */
GFSM_INLINE
gfsmState *gfsm_state_copy(gfsmState *dst, const gfsmState *src);
/** Clear an existing state */
GFSM_INLINE
void gfsm_state_clear(gfsmState *s);
/** Destroy a state */
GFSM_INLINE
void gfsm_state_free(gfsmState *s, gboolean free_arcs);
/** Close a state (generic) */
GFSM_INLINE
void gfsm_state_close(gfsmState *s);
//@}
/*======================================================================
* Methods: gfsmState: Accessors
*/
///\name gfsmState: Accessors
//@{
/** Check if state is valid */
GFSM_INLINE
gboolean gfsm_state_is_ok(const gfsmState *s);
/** Check for final state */
GFSM_INLINE
gboolean gfsm_state_is_final(const gfsmState *s);
/** Set final state flag */
GFSM_INLINE
void gfsm_state_set_final(gfsmState *s, gboolean is_final);
/** Get number of outgoing arcs */
GFSM_INLINE
guint gfsm_state_out_degree(const gfsmState *s);
//@}
//-- inline definitions
#ifdef GFSM_INLINE_ENABLED
# include <gfsmState.hi>
#endif
#endif /* _GFSM_STATE_H */
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