Change Guile license to LGPLv3+

[bpt/guile.git] / libguile / struct.h

diff --git a/libguile/struct.h b/libguile/struct.h
index a7c7782..d53e59d 100644 (file)
--- a/libguile/struct.h
+++ b/libguile/struct.h
@@ -3,21 +3,22 @@
 #ifndef SCM_STRUCT_H
 #define SCM_STRUCT_H
 
-/* Copyright (C) 1995,1997,1999,2000,2001, 2006 Free Software Foundation, Inc.
+/* Copyright (C) 1995,1997,1999,2000,2001, 2006, 2007, 2008 Free Software Foundation, Inc.
  *
  * 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.
+ * modify it under the terms of the GNU Lesser General Public License
+ * as published by the Free Software Foundation; either version 3 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
+ * 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301 USA
  */
 
 \f
@@ -79,7 +80,16 @@ SCM_API SCM scm_struct_table;
 
 #define SCM_STRUCT_GC_CHAIN(X) SCM_CELL_OBJECT_3 (X)
 #define SCM_SET_STRUCT_GC_CHAIN(X, Y) SCM_SET_CELL_OBJECT_3 (X, Y)
-SCM_API SCM scm_i_structs_to_free;
+
+/* For clearing structs. We can't use the regular GC mark bits, as
+   meddling with them at random times would mess up the invariants of
+   the garbage collector.
+ */
+#define SCM_STRUCT_MARK_P(X) SCM_CELL_WORD_2 (X)
+#define SCM_SET_STRUCT_MARK(X) SCM_SET_CELL_WORD_2 (X, 0x1)
+#define SCM_CLEAR_STRUCT_MARK(X) SCM_SET_CELL_WORD_2 (X, 0x0)
+
+SCM_INTERNAL SCM scm_i_structs_to_free;
 
 \f
 
@@ -93,7 +103,9 @@ SCM_API SCM scm_make_struct_layout (SCM fields);
 SCM_API SCM scm_struct_p (SCM x);
 SCM_API SCM scm_struct_vtable_p (SCM x);
 SCM_API SCM scm_make_struct (SCM vtable, SCM tail_array_size, SCM init);
+SCM_API SCM scm_make_vtable (SCM fields, SCM printer);
 SCM_API SCM scm_make_vtable_vtable (SCM extra_fields, SCM tail_array_size, SCM init);
+SCM_INTERNAL SCM scm_i_struct_equalp (SCM s1, SCM s2);
 SCM_API SCM scm_struct_ref (SCM handle, SCM pos);
 SCM_API SCM scm_struct_set_x (SCM handle, SCM pos, SCM val);
 SCM_API SCM scm_struct_vtable (SCM handle);
@@ -104,7 +116,7 @@ SCM_API SCM scm_struct_vtable_name (SCM vtable);
 SCM_API SCM scm_set_struct_vtable_name_x (SCM vtable, SCM name);
 SCM_API void scm_print_struct (SCM exp, SCM port, scm_print_state *);
 SCM_API void scm_struct_prehistory (void);
-SCM_API void scm_init_struct (void);
+SCM_INTERNAL void scm_init_struct (void);
 
 #endif  /* SCM_STRUCT_H */