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- /*
- * Copyright (C) 1997-2004, Michael Jennings
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to
- * deal in the Software without restriction, including without limitation the
- * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
- * sell copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies of the Software, its documentation and marketing & publicity
- * materials, and acknowledgment shall be given in the documentation, materials
- * and software packages that this Software was used.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
- * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
- */
-
- #ifndef _LIBAST_ITERATOR_IF_H_
- #define _LIBAST_ITERATOR_IF_H_
-
- /*
- * interface goop
- */
-
- /* Standard typecast macros.... */
- #define SPIF_ITERATOR(o) (SPIF_CAST(iterator) (o))
- #define SPIF_ITERATOR_CLASS(o) (SPIF_CAST(iteratorclass) SPIF_OBJ_CLASS(o))
-
- /* Name of class variable associated with iterator interface */
- #define SPIF_ITERATORCLASS_VAR(type) spif_ ## type ## _iteratorclass
-
- /* Check if an iterator is NULL */
- #define SPIF_ITERATOR_ISNULL(o) (SPIF_ITERATOR(o) == SPIF_NULL_TYPE(iterator))
-
- /* Check if an object is an iterator */
- #define SPIF_OBJ_IS_ITERATOR(o) SPIF_OBJ_IS_TYPE(o, iterator)
-
- /* Call a method on an instance of an implementation class */
- #define SPIF_ITERATOR_CALL_METHOD(o, meth) SPIF_ITERATOR_CLASS(o)->meth
-
- /* Calls to the basic functions. */
- #define SPIF_ITERATOR_NEW(type) SPIF_ITERATOR((SPIF_CLASS(SPIF_ITERATORCLASS_VAR(type)))->noo())
- #define SPIF_ITERATOR_INIT(o) SPIF_OBJ_INIT(o)
- #define SPIF_ITERATOR_DONE(o) SPIF_OBJ_DONE(o)
- #define SPIF_ITERATOR_DEL(o) SPIF_OBJ_DEL(o)
- #define SPIF_ITERATOR_SHOW(o, b, i) SPIF_OBJ_SHOW(o, b, i)
- #define SPIF_ITERATOR_COMP(o1, o2) SPIF_OBJ_COMP(o1, o2)
- #define SPIF_ITERATOR_DUP(o) SPIF_OBJ_DUP(o)
- #define SPIF_ITERATOR_TYPE(o) SPIF_OBJ_TYPE(o)
-
- #define SPIF_ITERATOR_HAS_NEXT(o) SPIF_CAST(bool) ((SPIF_ITERATOR_CALL_METHOD((o), has_next))(o))
- #define SPIF_ITERATOR_NEXT(o) SPIF_CAST(obj) ((SPIF_ITERATOR_CALL_METHOD((o), next))(o))
-
- typedef spif_obj_t spif_iterator_t;
-
- SPIF_DECL_OBJ(iteratorclass) {
- SPIF_DECL_PARENT_TYPE(class);
-
- spif_func_t has_next;
- spif_func_t next;
- };
-
- #endif /* _LIBAST_ITERATOR_IF_H_ */
-