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/*=============================================================================*\
* File: gfsmIndexed.hi
* Author: Bryan Jurish <moocow@ling.uni-potsdam.de>
* Description: finite state machine library: indexed automaton: inline definitions
*
* Copyright (c) 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
*=============================================================================*/
/*======================================================================
* Constructors etc.
*/
//----------------------------------------
gfsmIndexedAutomaton *gfsm_indexed_automaton_new_full(gfsmAutomatonFlags flags,
gfsmSRType srtype,
gfsmStateId n_states,
guint n_arcs)
{
gfsmIndexedAutomaton *xfsm = g_new0(gfsmIndexedAutomaton,1);
#if 0
gfsmStateId qid;
gfsmWeight srzero;
#endif
xfsm->flags = flags;
xfsm->sr = gfsm_semiring_new(srtype);
xfsm->root_id = gfsmNoState;
//xfsm->state_is_valid = gfsm_bitvector_sized_new(n_states);
xfsm->state_final_weight = gfsm_weight_vector_sized_new(n_states);
xfsm->arcs = gfsm_arc_table_index_sized_new(n_states, n_arcs);
#if 0
//-- initialize: states
for (qid=0; qid < n_states; qid++) {
g_array_index(xfsm->state_final_weight,gfsmWeight,qid) = xfsm->sr->zero;
}
#endif
return xfsm;
}
//----------------------------------------
GFSM_INLINE
gfsmIndexedAutomaton *gfsm_indexed_automaton_new(void)
{
return gfsm_indexed_automaton_new_full(gfsmAutomatonDefaultFlags,
gfsmAutomatonDefaultSRType,
gfsmAutomatonDefaultSize,
gfsmAutomatonDefaultSize
);
}
//----------------------------------------
GFSM_INLINE
gfsmIndexedAutomaton *gfsm_indexed_automaton_clone(gfsmIndexedAutomaton *src)
{
return gfsm_indexed_automaton_copy(gfsm_indexed_automaton_new_full(src->flags,
src->sr->type,
gfsm_indexed_automaton_n_states(src),
gfsm_indexed_automaton_n_arcs(src)),
src);
}
//----------------------------------------
GFSM_INLINE
void gfsm_indexed_automaton_clear(gfsmIndexedAutomaton *xfsm)
{
//gfsm_bitvector_clear(xfsm->state_is_valid);
gfsm_weight_vector_resize(xfsm->state_final_weight,0);
gfsm_arc_table_index_resize(xfsm->arcs,0,0);
xfsm->root_id = gfsmNoState;
return;
}
//----------------------------------------
GFSM_INLINE
void gfsm_indexed_automaton_free(gfsmIndexedAutomaton *xfsm)
{
if (!xfsm) return;
if (xfsm->sr) gfsm_semiring_free(xfsm->sr);
//if (xfsm->state_is_valid) gfsm_bitvector_free(xfsm->state_is_valid);
if (xfsm->state_final_weight) gfsm_weight_vector_free(xfsm->state_final_weight);
if (xfsm->arcs) gfsm_arc_table_index_free(xfsm->arcs);
g_free(xfsm);
}
/*======================================================================
* Methods: Import & Export
*/
//-- EXTERN
/*======================================================================
* Methods: Accessors: gfsmIndexedAutomaton
*/
//----------------------------------------
GFSM_INLINE
void gfsm_indexed_automaton_reserve_states(gfsmIndexedAutomaton *xfsm, gfsmStateId n_states)
{
#if 0
gfsmStateId n_states_old = gfsm_indexed_automaton_n_states(xfsm);
gfsmStateId qid;
gfsmWeight srzero;
#endif
//-- resize state-indexed arrays
//gfsm_bitvector_resize(xfsm->state_is_valid, n_states);
gfsm_weight_vector_resize(xfsm->state_final_weight, n_states);
gfsm_arc_table_index_resize(xfsm->arcs, n_states, xfsm->arcs->tab->len);
#if 0
//-- ... adjust final weights
srzero = xfsm->sr->zero;
for (qid=n_states_old; qid < n_states; qid++) {
g_array_index(xfsm->state_final_weight,gfsmWeight,qid) = srzero;
}
#endif
}
//----------------------------------------
GFSM_INLINE
void gfsm_indexed_automaton_reserve_arcs(gfsmIndexedAutomaton *xfsm, guint n_arcs)
{
gfsm_arc_table_index_resize(xfsm->arcs, xfsm->arcs->first->len-1, n_arcs);
}
//----------------------------------------
GFSM_INLINE
void gfsm_indexed_automaton_sort(gfsmIndexedAutomaton *xfsm, gfsmArcCompMask sort_mask)
{
if (xfsm->flags.sort_mode != sort_mask && sort_mask != gfsmASMNone) {
gfsm_arc_table_index_sort_bymask(xfsm->arcs, sort_mask, xfsm->sr);
}
xfsm->flags.sort_mode = sort_mask;
}
/*======================================================================
* Methods: Accessors: gfsmAutomaton API: Automaton
*/
//----------------------------------------
GFSM_INLINE
gfsmSemiring *gfsm_indexed_automaton_set_semiring(gfsmIndexedAutomaton *xfsm, gfsmSemiring *sr)
{
if (xfsm->sr) gfsm_semiring_free(xfsm->sr);
xfsm->sr = gfsm_semiring_copy(sr);
return sr;
}
//----------------------------------------
GFSM_INLINE
void gfsm_indexed_automaton_set_semiring_type(gfsmIndexedAutomaton *xfsm, gfsmSRType srtype)
{
if (!xfsm->sr) xfsm->sr = gfsm_semiring_new(srtype);
else if (xfsm->sr->type != srtype) {
gfsm_semiring_free(xfsm->sr);
xfsm->sr = gfsm_semiring_new(srtype);
}
}
//----------------------------------------
GFSM_INLINE
gfsmStateId gfsm_indexed_automaton_n_states(gfsmIndexedAutomaton *xfsm)
{ return xfsm->state_final_weight->len; }
//----------------------------------------
GFSM_INLINE
guint gfsm_indexed_automaton_n_arcs(gfsmIndexedAutomaton *xfsm)
{ return xfsm->arcs->tab->len; }
//----------------------------------------
GFSM_INLINE
guint gfsm_indexed_automaton_get_root(gfsmIndexedAutomaton *xfsm)
{ return xfsm->root_id; }
//----------------------------------------
GFSM_INLINE
void gfsm_indexed_automaton_set_root(gfsmIndexedAutomaton *xfsm, gfsmStateId qid)
{
if (qid >= gfsm_indexed_automaton_n_states(xfsm) && qid != gfsmNoState) {
gfsm_indexed_automaton_reserve_states(xfsm,qid+1);
}
xfsm->root_id = qid;
}
/*======================================================================
* Methods: Accessors: gfsmAutomaton API: States
*/
//----------------------------------------
GFSM_INLINE
gboolean gfsm_indexed_automaton_has_state(gfsmIndexedAutomaton *xfsm, gfsmStateId qid)
{ return qid < gfsm_indexed_automaton_n_states(xfsm); }
//----------------------------------------
GFSM_INLINE
gfsmStateId gfsm_indexed_automaton_ensure_state(gfsmIndexedAutomaton *xfsm, gfsmStateId qid)
{
if (qid >= gfsm_indexed_automaton_n_states(xfsm) && qid != gfsmNoState) {
gfsm_indexed_automaton_reserve_states(xfsm,qid+1);
}
return qid;
}
//----------------------------------------
GFSM_INLINE
void gfsm_indexed_automaton_remove_state(gfsmIndexedAutomaton *fsm, gfsmStateId qid)
{ return; }
//----------------------------------------
GFSM_INLINE
void gfsm_indexed_automaton_set_final_state_full(gfsmIndexedAutomaton *xfsm,
gfsmStateId qid,
gboolean is_final,
gfsmWeight final_weight)
{
gfsm_indexed_automaton_ensure_state(xfsm,qid);
if (!is_final) final_weight = xfsm->sr->zero;
g_array_index(xfsm->state_final_weight,gfsmWeight,qid) = final_weight;
}
//----------------------------------------
GFSM_INLINE
gboolean gfsm_indexed_automaton_lookup_final(gfsmIndexedAutomaton *xfsm, gfsmStateId qid, gfsmWeight *wp)
{
if (!gfsm_indexed_automaton_has_state(xfsm,qid)) {
*wp = xfsm->sr->zero;
return FALSE;
}
*wp = g_array_index(xfsm->state_final_weight,gfsmWeight,qid);
return ((*wp)!=xfsm->sr->zero);
}
//----------------------------------------
GFSM_INLINE
gboolean gfsm_indexed_automaton_state_is_final(gfsmIndexedAutomaton *xfsm, gfsmStateId qid)
{
gfsmWeight fw;
return gfsm_indexed_automaton_lookup_final(xfsm,qid,&fw);
}
//----------------------------------------
GFSM_INLINE
gfsmWeight gfsm_indexed_automaton_get_final_weight(gfsmIndexedAutomaton *xfsm, gfsmStateId qid)
{
if (!gfsm_indexed_automaton_has_state(xfsm,qid)) return xfsm->sr->zero;
return g_array_index(xfsm->state_final_weight,gfsmWeight,qid);
}
//----------------------------------------
GFSM_INLINE
guint gfsm_indexed_automaton_out_degree(gfsmIndexedAutomaton *fsm, gfsmStateId qid)
{
if (!gfsm_indexed_automaton_has_state(fsm,qid)) return 0;
return gfsm_arc_table_index_out_degree(fsm->arcs,qid);
}
/*======================================================================
* gfsmArcRange
*/
//----------------------------------------
GFSM_INLINE
void gfsm_arcrange_open_indexed(gfsmArcRange *range, gfsmIndexedAutomaton *xfsm, gfsmStateId qid)
{
if (gfsm_indexed_automaton_has_state(xfsm,qid)) {
gfsm_arcrange_open_table_index(range,xfsm->arcs,qid);
} else {
gfsm_arcrange_close(range);
}
}
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