Merge branch 'extgawk'

1 files changed, 31 insertions, 0 deletions

diff --git a/extension/stack.h b/extension/stack.h
new file mode 100644
index 00000000..8fc06e78
--- /dev/null
+++ b/extension/stack.h
@@ -0,0 +1,31 @@
+/*
+ * stack.h -- Definitions for stack functions for use by extensions.
+ */
+
+/* 
+ * Copyright (C) 2012 the Free Software Foundation, Inc.
+ * 
+ * This file is part of GAWK, the GNU implementation of the
+ * AWK Programming Language.
+ * 
+ * GAWK 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.
+ * 
+ * GAWK 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, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA
+ */
+
+extern int stack_empty();	/* return true if stack is empty */
+extern void *stack_top();	/* return top object on the stack */
+extern void *stack_pop();	/* pop top object and return it */
+extern int stack_push(void *);	/* push an object onto the stack,
+				 * return 0 if failed, 1 if success 
+				 */