--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/lwlib/lw_stack.h	Wed Jan 19 22:27:17 2011 -0700
@@ -0,0 +1,53 @@
+/*
+lw_stack.h
+
+Copyright © 2010 William Astle
+
+This file is part of LWTOOLS.
+
+LWTOOLS 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/>.
+*/
+
+#ifndef ___lw_stack_h_seen___
+#define ___lw_stack_h_seen___
+
+
+#ifdef ___lw_stack_c_seen___
+
+struct lw_stack_node_priv
+{
+	void *data;
+	struct lw_stack_node_priv *next;
+};
+
+struct lw_stack_priv
+{
+	struct lw_stack_node_priv *head;
+	void (*freefn)(void *d);
+};
+
+typedef struct lw_stack_priv * lw_stack_t;
+
+#else /* def ___lw_stack_c_seen___ */
+
+typedef void * lw_stack_t;
+extern lw_stack_t lw_stack_create(void (*freefn)(void *d));
+extern void lw_stack_destroy(lw_stack_t S);
+extern void *lw_stack_top(lw_stack_t S);
+extern void *lw_stack_pop(lw_stack_t S);
+extern void lw_stack_push(lw_stack_t S, void *item);
+
+#endif /* def ___lw_stack_c_seen___ */
+
+#endif /* ___lw_stack_h_seen___ */