Add new files for IELR and canonical LR implementation.

* src/AnnotationList.c: New.
* src/AnnotationList.h: New.
* src/InadequacyList.c: New.
* src/InadequacyList.h: New.
* src/Sbitset.c: New.
* src/Sbitset.h: New.
* src/ielr.c: New.
* src/ielr.h: New.

src/InadequacyList.c

@@ -0,0 +1,76 @@
+/* IELR's inadequacy list.
+
+   Copyright (C) 2009 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)
+{
+  InadequacyList *result = xmalloc (sizeof *result);
+  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;
+}