removed unused header

[libfirm] / ir / adt / iterator.h

diff --git a/ir/adt/iterator.h b/ir/adt/iterator.h
index 6884710..ac834a4 100644 (file)
--- a/ir/adt/iterator.h
+++ b/ir/adt/iterator.h
@@ -1,30 +1,62 @@
+/*
+ * Copyright (C) 1995-2007 University of Karlsruhe.  All right reserved.
+ *
+ * This file is part of libFirm.
+ *
+ * This file may be distributed and/or modified under the terms of the
+ * GNU General Public License version 2 as published by the Free Software
+ * Foundation and appearing in the file LICENSE.GPL included in the
+ * packaging of this file.
+ *
+ * Licensees holding valid libFirm Professional Edition licenses may use
+ * this file in accordance with the libFirm Commercial License.
+ * Agreement provided with the Software.
+ *
+ * This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
+ * WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE.
+ */
+
+/**
+ * @file
+ * @brief   Iterators for the several collection types used in firm.
+ *          Useful for formatted and unified dumping of collections of objects.
+ * @author  Sebastian Hack
+ * @date    29.11.2004
+ * @version $Id$
+ */
+#ifndef FIRM_ADT_ITERATOR_H
+#define FIRM_ADT_ITERATOR_H
+
+#include "fourcc.h"
+
 /**
- * Iterators for the several collection types used in firm.
- * Useful for formatted and unified dumping of collections of objects.
- * @author Sebastian Hack
- * @date 29.11.2004
+ * The iterator magic word.
  */
+#define ITERATOR_MAGIC FOURCC('I', 'T', 'E', 'R')
 
 /**
  * Check, if some memory object appears to be an iterator.
  * @param ptr Some memory.
  * @return 1, if that memory area appears to be an iterator, 0 if not.
  */
-int is_iterator(const void *ptr);
+#define is_iterator(ptr) (((const iterator_t *) (ptr))->magic == ITERATOR_MAGIC)
 
 typedef struct _iterator_t {
-       char magic[4];
+       unsigned magic;
        void *(*start)(void *collection);
        void *(*next)(void *collection, void *curr);
        void (*finish)(void *collection, void *curr);
 } iterator_t;
 
 /**
- * An iterator implementation for psets.
+ * An iterator implementation for linked lists.
  */
-extern const iterator_t *it_pset;
+extern const iterator_t *list_iterator;
 
 /**
- * An iterator implementation for linked lists.
+ * An iterator implementation for psets.
  */
-extern const iterator_t *it_list;
+extern const iterator_t *pset_iterator;
+
+#endif