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/* IELR's inadequacy list.
Copyright (C) 2009-2013 Free Software Foundation, Inc.
This file is part of Bison, the GNU Compiler Compiler.
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 3 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 <config.h>
#include "system.h"
#include "InadequacyList.h"
ContributionIndex const ContributionIndex__none = -1;
ContributionIndex const ContributionIndex__error_action = -2;
InadequacyList *
InadequacyList__new_conflict (state *manifesting_state, symbol *token,
bitset actions,
InadequacyListNodeCount *node_count)
{
InadequacyList *result = xmalloc (sizeof *result);
result->id = (*node_count)++;
aver (*node_count != 0);
result->next = NULL;
result->manifestingState = manifesting_state;
result->contributionCount = bitset_count (actions);
result->inadequacy.conflict.token = token;
result->inadequacy.conflict.actions = actions;
return result;
}
void
InadequacyList__delete (InadequacyList *self)
{
while (self)
{
InadequacyList *node = self;
self = self->next;
bitset_free (node->inadequacy.conflict.actions);
free (node);
}
}
ContributionIndex
InadequacyList__getShiftContributionIndex (InadequacyList const *self)
{
if (!bitset_test (self->inadequacy.conflict.actions,
self->manifestingState->reductions->num))
return ContributionIndex__none;
return self->contributionCount - 1;
}
symbol *
InadequacyList__getContributionToken (InadequacyList const *self,
ContributionIndex i)
{
aver (0 <= i && i < self->contributionCount);
return self->inadequacy.conflict.token;
}
void
InadequacyList__prependTo (InadequacyList *self, InadequacyList **list)
{
InadequacyList *head_old = *list;
*list = self;
self->next = head_old;
}
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